TW390807B - Disposable absorbent article and process for production of the same - Google Patents

Abstract

The present invention relates to an disposable absorbent article comprising a liquid pervious topsheet, an absorbent core and a backsheet. Said backsheet comprising a fluid permeable polymeric film having uni directional fluid transfer towards the core, and said core comprising a fluid storage layer, wherein said absorbent article exhibits a fluid contact angle gradient across said storage layer and said backsheet.

Description

A7 B7 Patent Application No. 86106433 Chinese Specification Correction Page Γ88 糸 Gas w 5. Description of Invention (4) Including the step of applying surface energy material to at least one layer of the lower part. Still another aspect of the present invention relates to the method for manufacturing the aforementioned absorbent article, including a step screw incorporating a low surface energy material into at least one layer of the lower portion. Brief Description of the Drawings Figure 1: Top plan view of the first specific example of the absorbent article of the present invention, partially cut away to show its structure. Fig. 2: An enlarged sectional view of the back sheet of the present invention taken along line 1_ 丨 of Fig. 1. Figure 3: An enlarged cross-sectional view of a drop of liquid on a surface, where angle a represents the contact angle of the liquid on the surface. -Figure 4: An enlarged sectional view of a drop of liquid on a surface that has two different surface energies and thus two different contact angles A (a) and A (b). Component code table —. ^ 1 i ^ i 1_1 · ϋ nm HI {Please read the precautions on the back of ib-M and reprint on this page. Printed by the Central Bureau of Standards of the Ministry of Economic Affairs and printed by the Shellfish Consumer Cooperative. 1 Sanitary pad 2 Top sheet 3 Back sheet 4 Absorbent core 5 Peripheral 6 Fluid storage layer 21 Top sheet 22 First layer 23 Second layer 24 Breathable back sheet-Travel paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) 5. Description of the invention (A7 B7 Printed by Zhengong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economics Field of the Invention The present invention relates to absorbent articles, particularly sanitary napkins, with a breathable back sheet, which are less wet to the user's clothing. BACKGROUND OF THE INVENTION The field of absorbent articles, particularly The main consumer demand for menstruation is to have a high degree of protection and comfort, and a highly satisfactory means of improving the comfort of absorbent articles is the use of so-called " breathable backsheets, which include, for example, US 4 591 523 The pore-forming film with directional fluid transport. The pore can be called _ suction back blood type can be permeable to steam and air, so it can do gas exchange with the environment two. Therefore can be evaporated The fluid stored in the core increases the air circulation ring inside the absorbent article. This is particularly advantageous because many users use it to reduce 'stickiness' when using it, especially for long periods of time. However, breathable backsheets are used for absorbent articles. The main disadvantage is that it increases the probability of leakage, commonly known as wet-to-use clothing. Although in principle the breathable backsheet can only transport gaseous substances and only one-way fluid transport, physical mechanisms such as squeezing can still occur As a result, the penetration and capillary effects lead to the reverse transfer of the fluid through the backsheet to the person using it. In particular, when the product is used during exercise, there is a large amount of emissions, or when used for a long time, these mechanisms are more obvious ° In fact, Although breathable backsheets provide excellent comfort improvements, their protective effect, especially under severe conditions,-still leads to unacceptable levels of failure. The industry has known the absorbent article and caused such breathable backsheets to cause moisture See through to the problem of using human clothing. The main common sense to solve this problem is the use of multi-layer backsheets, such as described in US 4 341 216. Similarly, no announcement This paper applies the European scale Chinese National Standard (CNS) Α4 size (210X297 mm) reading of the note

I Order No. 86106433 Patent Application A7 ^^ 年 ^ 月 日 Chinese Revised Sheet (May 88) _B7 V. Description of Invention ()

25 Gas permeable porous polymer film 26 Gas permeable weave layer 27 Core 28 Hole Chen 29 Nodules 30 Facing the garment surface 31 Facing the surface of the user 110 Droplets of fluid 112 Solid table 113 Zone 115 Zone (Read the note on the back side, and then this page)-Detailed description of the invention The invention relates to a disposable absorbent article, such as sanitary napkins (1), baby diapers, incontinence products and panty liners. These products typically include a liquid-permeable topsheet (2), a backsheet (3), and an absorbent core (4) interposed between the topsheet (2) and the backsheet (3). The top sheet (2), the back sheet (3) and the core (4) each have a side facing the wearer and a side facing the clothes. The garment facing side of the top sheet and the human facing side of the back sheet are joined to each other around the periphery (5) of the absorbent article. In a preferred embodiment of the invention, the absorbent article has wings, hemming elements or side flaps. Absorbent core According to the present invention, the absorbent core includes a first part and a second part, and the first part includes the following components: (a) The selective primary fluid distribution layer is preferably together with optional -7a- This paper size is applicable to China National Standard (CNS > A4 specification (210X297 mm) Ordered by the Central Bureau of Standards of the Ministry of Economic Affairs, printed by the shelling consumer cooperatives A7 Β7 Printed bags by the Central Standards Bureau of the Ministry of Economic Affairs, Zhengong Consumer Cooperatives The breathable absorbent article includes a breathable back sheet composed of at least two breathable layers on top of each other in the core. The area is not overlapped. Also, unpublished European patent application 942083228 discloses a disposable absorbent Breathable backsheets for articles, including a layer of breathable and hydrophobic polymer: an outer layer of biofiber fabric and an inner layer that includes a porous formed film with directional fluid transport. In addition, another solution is to increase the thickness of the absorbent article. Usually, the thickness of the core is increased to ensure that the required degree of protection reaches β θ. However, none of the previous solutions are positive. In particular, in the case of thin products, the thickness is equivalent. This is a key variable in product comfort. Therefore, there is a contradiction in the method of providing absorbent products with higher comfort. Thin breathable products cannot provide the required degree of protection. As a result, it is necessary to provide an absorbent article that can be breathable through use. The back sheet has a thinner thickness to provide improved comfort but still maintain the required degree of protection. ^ Today found that breathable back sheets can be used in thin sanitary napkins, thus forming a hydrophobic gradient between the back sheet and the core to provide a high degree of protection With comfort, hydrophobic gradients can be achieved using low surface energy materials such as polysiloxanes and aerofluorocarbons or low surface energy treatments. In this way, it is believed that physical mechanisms such as penetration and capillary effects can be prevented; even if they cannot be completely eliminated It can also greatly reduce wet penetration._ Another advantage of the present invention is that it can provide breathable tablets covered with hydrophobic materials. 'This layer no longer needs to be completely synthesized, at least it can be partially natural derived.>' Since The product is more natural to the touch, so it can provide significant consumer benefits ----------- installation ------. 1Τ ------ ^ »ί» Precautions reloading r * 5-

A7 B7 Printed by the Central Bureau of Standards, Ministry of Economic Affairs, Shelley Consumer Cooperatives-6- V. Description of the Invention (Perceived Benefits. The use of surface energy gradients is discussed in the unpublished U.S. Application 08/442 935. This case revealed the fluid transfer network, For example, the top sheet has a surface energy gradient. The mesh helps to transport the flow in one direction and resists reverse transportation. The mesh includes the first and second sides separated from each other by a middle portion. The first side of the net has a relatively middle Partial surface energy has a lower surface energy, thus forming a surface energy gradient. Appropriate low surface energy materials include polysiloxane fluoropolymers and paraffins. The mesh is particularly suitable for use as a topsheet for absorbing objects, transporting fluid away from the contact surface of the user. Entering the absorbent structure * ° Summary of the invention A first aspect of the present invention relates to a disposable absorbent article including a liquid-permeable top sheet, an absorbent core and a back sheet. The core is between the top sheet and the back sheet. The back The sheet includes a liquid-permeable polymer film having a unidirectional transport of fluid toward the core, and the core includes a fluid storage layer and the back sheet includes an outer layer. The core and back sheet each include at least one layer, wherein This layer has one side facing the mating surface and the garment facing side, each of these layers has a fluid contact angle. The absorbent article has a lower portion extending from the garment facing surface (including) of the fluid retaining layer to the outer garment facing surface (including ). The present invention is characterized in that at least one of the lower layers has a fluid contact angle that is greater than the fluid contact angle of the adjoining clothing-facing surface of the adjacent layer. The second aspect of the invention relates to a situation in which at least the lower layer is at least —The clothing-facing surface of the layer has a fluid contact angle greater than the contact angle of the layer facing the mating human surface. One aspect of the invention is a method for producing the aforementioned absorbent article. ) A4 threat (21QX297 public director ----_-- ^ ----- ^ ------ 1T ------ ^ • (Please read the precautions on the back before filling in the page), * A7 B7 Chinese Patent Application No. 86106433 Correction Sheet Γ88 糸 气 w 5. Description of the invention (4) Including the step of applying surface energy material to at least one layer of the lower part. Another aspect of the present invention relates to the foregoing Method for manufacturing absorbent articles, including Low surface energy material merged into at least one step of the lower part. Brief description of the drawing Figure 1: Top plan view of the first specific example of the absorbent article of the present invention, partially cut away to show its structure. Figure 2: An enlarged cross-sectional view of the back sheet of the present invention taken along line 1_ 丨 of Fig. 1. Fig. 3: An enlarged cross-sectional view of a drop of liquid on the surface, where angle a represents the contact angle of the liquid on the surface.-Section 4 Figure: An enlarged cross-sectional view of a drop of liquid on a surface that has two different surface energies and therefore two different contact angles A (a) and A (b). Element code table —. ^ 1 i ^ i 1_1 · Ϋ nm HI {Please read the precautions on the back of ib-M for further details on this page. Printed by the Central Bureau of Standards of the Ministry of Economic Affairs and printed by Shelley Consumer Cooperatives. 1 Sanitary napkin 2 Topsheet 3 Backsheet 4 Absorbent core 5 Peripheral 6 Fluid storage layer 21 Top Sheet 22 First layer 23 Second layer 24 Breathable back sheet-Travel paper size applies to Chinese National Standard (CNS) A4 specification (210X297 mm) Patent application No. 86106433 A7 ^^ year ^ month (May 88) _B7 V. Description of Invention ()

25 Gas permeable porous polymer film 26 Gas permeable weave layer 27 Core 28 Hole Chen 29 Nodules 30 Facing the garment surface 31 Facing the surface of the user 110 Droplets of fluid 112 Solid table 113 Zone 115 Zone (Read the note on the back side, and then this page)-Detailed description of the invention The invention relates to a disposable absorbent article, such as sanitary napkins (1), baby diapers, incontinence products and panty liners. These products typically include a liquid-permeable topsheet (2), a backsheet (3), and an absorbent core (4) interposed between the topsheet (2) and the backsheet (3). The top sheet (2), the back sheet (3) and the core (4) each have a side facing the wearer and a side facing the clothes. The garment facing side of the top sheet and the human facing side of the back sheet are joined to each other around the periphery (5) of the absorbent article. In a preferred embodiment of the invention, the absorbent article has wings, hemming elements or side flaps. Absorbent core According to the present invention, the absorbent core includes a first part and a second part, and the first part includes the following components: (a) The selective primary fluid distribution layer is preferably together with optional -7a- This paper size is applicable to China National standard (CNS > A4 specification (210X297 mm) Ordered by the Central Samples Bureau of the Ministry of Economic Affairs, printed by the shellfish consumer cooperative. V. Description of the invention (5 A7 B7 Printed by the Central Samples Bureau of the Ministry of Economic Affairs, Consumers Cooperative, printed secondary fluid distribution layer (B) a fluid storage layer; and the second part includes (c) a layer of " floating dust " below the storage layer; and (d) other optional components. According to the present invention, The thickness of the absorbent k core depends on the end use. In a preferred embodiment of the present invention, the absorbent article is sanitary napkin or panty liner, and the thickness of the core is 15 mm to 1 mm, preferably 10 mm to 1 mm. Optimum 7mm to 1mmm. Β / Secondary Fluid Distribution Drawer The optional components of the first part of the absorbent core according to the present invention are the primary fluid distribution layer and the secondary fluid distribution layer. The typical position of a multi-distribution layer is Below the top sheet and with the top It is used for fluid communication. The top sheet transfers the received fluid to the primary distribution layer, and finally to the storage layer. The fluid transfer through the primary distribution layer not only appears in the thickness, but also transports along the length and width of the absorbent product. It is also selective. 'But the preferred secondary fluid distribution layer is typically located below the primary distribution layer and is in fluid communication with the primary distribution layer. The purpose of the secondary distribution layer is to facilitate receiving fluid from the primary distribution layer and quickly transferring it to the lower layer. The storage layer "This helps to fully utilize the fluid capacity of the underlying storage layer. The fluid distribution layer can be made of typical storage materials of any distribution layer. B The fluid storage drawer is in fluid communication with the first or second distribution layer and has a typical status The lower layer is a fluid storage layer (6). The fluid storage layer includes any useful absorbent material or a combination thereof. Preferably, it includes the commonly known as "hydration gel", " Super absorbent material " A combination of a gelling material and a suitable carrier. Absorbent gelling materials can absorb large amounts of aqueous body fluids, and can be used at moderate pressures a

(Please also read the notes on the back before refilling. Page) Order the Central Samples Bureau of the Ministry of Economic Affairs, Shellfish Consumer Cooperative A7 B7 V. Invention Note (6) The gift of absorption is kept. The absorbent gelling material can be homogeneously or heterogeneously dispersed in a suitable carrier. As long as it is absorbent, an appropriate carrier may be used alone. Appropriate absorbent / recoverable gelling materials used here most often include generally water-insoluble, micro-crosslinked portions that neutralize polymer gelling materials. This material forms a hydrogel when exposed to water. Such polymeric materials can also be prepared from polymerizable unsaturated acid-containing monomers well known in the industry. 0 Suitable carriers contain materials that can be conveniently used to absorb the structure, such as natural, modified, or synthetic fibers, particularly modified or unmodified cellulose fibers, in the form of fluff or fabric. Appropriate carriers can be used in conjunction with the absorbent gelling material, but can also be used alone or in combination. 0 is best used for sanitary cotton and panty liners as fabrics or fabric laminates. Specific examples of the absorbent structure prepared according to the present invention include a double-layer fabric laminate formed by folding back a fabric. The layers are joined to each other, for example, by an adhesive or by mechanical interlocking or hydrogen bridge bonds. Absorbent gelling materials or other optional materials can be placed between layers. Modified cellulose fibers, such as rigid cellulose fibers, can also be used. Synthetic fibers can also be used including cellulose acetate, styrene-based vinyl, polyphenylene: acrylic, acrylic (such as Orlon), polyvinyl acetate, non-soluble polyvinyl alcohol 'Polyethylene terephthalate, polypropylene, polyamine (such as nylon), polyester' bicomponent fiber, tricomponent fiber and mixtures, etc. Preferably, the fiber surface is hydrophilic or can be treated to become hydrophobic, and the storage layer may also contain a filler material, such as perlite ' M soil, to improve liquid retention through stone contention. If the absorbent gelling material is heterogeneous, the storage layer may be partially homogenized, that is, there are I n gutters in one or more directions within the size of the storage layer. W (Read the note on the back first $ Item and fill in page f) * r Printed by the Central Bureau of quasi-Ministry of Economic Affairs, Shellfish Consumer Cooperatives -10- A7 B7 V. Description of the invention (7) Gradient ° heterogeneous distribution is also called partially or completely including absorbent gelling Carrier laminate of materials. c Fiber Young The optional component included in the absorbent element according to the present invention is the fiber layer adjacent to the storage layer, which is typically located below. The underlying fiber layer is typically referred to as the " flying dust " layer because the substrate is provided, and the absorbent core above the substrate deposits an absorbent gelling material in the storage layer during the manufacturing process. Indeed, when the absorptive gelling material has a large structure, such as a fiber sheet or strip, it does not contain a fiber " dust " layer. However, such a " dust " layer may provide additional fluid handling capabilities along the length of the pad, such as rapid wicking of fluids. • Other details of body 2d The absorbent core according to the present invention may contain other Optional component of the absorbent web. For example, the reinforcing absorbent portion may be placed inside or between layers of the absorbent core. Such reinforcements must have a configuration that can form an interface barrier for fluid transport. Since hot-melt adhesives often provide structural integrity, hot-melt adhesive absorbent structures often do not require reinforcements. Another component contained in the absorbent core according to the present invention and preferably next to or forming part of the secondary or secondary fluid distribution layer is an odor control agent. Coated with activated carbon or other odor control agents, particularly suitable zeolite or clay materials can be selectively blended into the absorbent structure. These ingredients can be mixed in any desired shape but often in discrete particles. -. Topsheet — The topsheet (21) consists of a single layer or multiple layers. In a preferred embodiment, the top sheet includes the first layer (22), which provides the top sheet facing the matching human face and is located between the first layer and the absorption. This paper size is applicable to China National Standard Car (CNS) A4 specifications (210X297 mm) ----------- Gutter • (Please also read the notes on the back and fill in the pages) * * A7 B7 Printed by the Central Standards Bureau of the Ministry of Economic Affairs, Consumer Work Cooperatives 5. Illustrative invention (8) Structure / The second layer (23) between the cores. The topsheet (21) as a whole or in layers must be conformable, soft and non-irritating to the skin of the person wearing it. It must also be > elastic so it can be stretched in one or two directions. The topsheet according to the present invention may be formed from any of the materials known in the industry for such uses, such as nonwovens, films, or a combination of both. In a preferred embodiment of the present invention, at least one layer (preferably the top layer) of the topsheet comprises a liquid-permeable porous polymer film (22). Preferably, the upper layer is provided by a perforated film material, and the pores help the liquid to be transported from the surface to the absorbent structure, as described in US 3 929 135, us 4 151 240, US 4 ^ 19 868, Uj 4 324 426 , US 4 343 3 14 and US 4 591 523. The topsheet typically extends across the entirety of the absorbent structure and into the preferred side flaps, hemming elements or wings, and forms part or all of these elements. Backsheet The absorbent article according to the present invention comprises a unidirectional fluid transportable breathable backsheet (24). The main role of the backsheet is to prevent the emissions from being absorbed and contained in the absorbent structure from wetting objects such as underwear, trousers, pajamas, and underwear that are in contact with the absorbent product. However, in addition, the back sheet of the absorbent article of the present invention can also transfer steamed milk and air, so that air is circulated into the back sheet and sent out of the back sheet. The term "one-way" as used herein is indicated in the direction of 笮At least a material that is generally (even incompletely) unidirectional fluid transported. The directionality of the body can be identified by Test Method 3 in the Test Method section of this article. According to the present invention, the back sheet preferably includes two layers: including gas permeability (please read the precautions on the back first and then fill in the ^^ pages * H. · .pack.

、 1T This paper size applies to Chinese National Standard (CNS) A4 specification (210X297 mm) A7 B7 Printed by the Central Bureau of Specimen Bureau of the Ministry of Economy Printed by Bayer Consumer Cooperatives V. Description of the invention () The first layer of polymer film and gas Permeable fabric layer ⑽ = first layer. The first and second layers preferably have similar relative void volumes. The first layer is typically adjacent to the core (2p and the subsequent layers of the backsheet are typically located away from the core. The backsheet includes additional layers. In each case, the outermost layer from the core is called the outer layer. The layers of the backsheet are generally close and direct to each other The perforated first layer of the walking piece (2 5) includes a layer with discrete pores (2 8) which extends toward the core beyond the level of the layer facing the fabric surface, thereby forming nodules (29). Each nodule has a mouth at the end The preferred nodule is funnel-shaped or cone-shaped, similar to that described in US 3,929,135. The pores at the plane of the layer and the mouth at the end of the nodule can be round or non-cymbal. In short, the cross-section of the mouth at the end of the nodule The size or cross-sectional area is smaller than the cross-sectional size or cross-sectional area of the pores located on the plane of the layer. The typical open area of a layer is greater than 5% of the total film layer area, preferably 100 /. To 35%. The open area can be determined using the test method described in detail later in the test method section. The first layer of the backsheet (25) according to the present invention can be made of any material known in the industry, but is preferably made of readily available polymer materials The second layer of the old movie includes The gas-permeable fiber fabric layer (26) is a polymer fiber known in the industry, such as a polymer non-woven fabric. The fiber layer preferably has a basis weight of 100 to 100 g / m2, more preferably 15 to 30 g / m2. Fibers can be made of any kind of polymer materials, especially polyethylene, polypropylene, polyester, polyacetate, or a combination of them (inter- and inner-fiber bonding); fibers also include synthetic fibers and non-absorbent natural fibers or Treatment of natural slopes such as cotton blends◊ The fibers are preferably spunbond, carded or meltblown. Preferably the second layer includes a matrix of spunbond fibers covered with a meltblown fiber or another meltblown fiber on one side and both sides 5¾¾ (CNS) A4 "(2 丨 〇; 219? 7 :, cent 3

; ^ Install 1T ------ ^ (please read the note on the back and then fill in page t) · _ Covered with blown fiber. The second layer of the backsheet further comprises a liquid absorbent which comprises at least 5% by weight of the fiber layer so that the fibers can swell and reduce the space between the fibers. The back sheet typically extends across the entirety of the I-absorbent structure and into the preferred side flaps, and the peripheral elements and the interior of the wings form part or all. Fluid contact angle According to the first aspect of the present invention, any one of the lower layers has a fluid-facing surface that faces the user and a garment-facing surface, and at least one layer of the corner has a fluid-contact angle that is greater than that of the adjacent layer. The fluid contact angle facing the garment surface. According to one aspect of the present invention, any layer of Shao Dong has a mating face and a garment-facing surface, each layer of the layer has a fluid contact angle, and the garment-facing surface of at least one of the lower layers has a fluid-contact angle greater than that of the same layer. Fluid contact angle. In principle, the contact angle gradient can exist between any side of any lower layer (facing the mating side or facing the fabric side). In this way, the gradient of the fluid contact angle may exist across the same layer facing the wearer and the clothing surface or at least one lower layer facing the clothing surface and overlooking the adjacent layer. Between this adjacent surface, that is, the first layer of the back sheet faces the wearer and the clothing surface. The first layer of the room is facing the clothing surface, the second layer of the t-piece is facing the wearer's face, the second layer of the back piece is facing between the wearer and the clothing face, or any two subsequent layers of the body piece. In addition, it is foreseen that a combination of layers each having a specific contact angle relationship can be used to generate a continuous contact angle gradient at the lower portion. However, in order to simplify the description of the present invention, the following paragraphs focus on the separation or increase of the contact angle gradient between the clothing-facing surface of the core and the user-facing surface of the first layer of the backsheet.

Printed by the Central Bureau of Standards of the Ministry of Economic Affairs® C Industrial Consumer Cooperative. Typically, a drop of liquid 110 is placed on a solid surface 112 to make a contact angle A with the solid surface, as seen in Figure 3. As the ability of a solid surface to be wetted by a liquid increases, the contact angle A decreases. As the ability of a solid surface to be wetted by a liquid decreases, the joint angle A increases *. The liquid-solid contact angle can be determined by techniques known in the industry, for example, physical chemistry shown on the surface, Arthur w Adamson (1967), FE Bartell and FE. H. Zuidema, J. Am. Chem · Sqc ·, 58 , 1449 (1936) and J. Bikerman, ind. F. nP Chem ^ Anal. G (L, 13, 443 (194 1) (also described herein for reference). More recent publications in this field include Colloids and Surfaces of Cheng et al. 43: 15 1-167 (1990) 'and Rotenberg $ Journal of Colloid and Interface Science 93⑴: 169-183 (1983) (also described here for reference. The term "hydrophilic" is used. Represents an aqueous fluid (such as an aqueous body fluid wetted surface) that can be deposited on it. Hydrophilicity and wettability are typically defined by contact angles and surface tensions of fluids and solid surfaces. Discussed in detail in the American Chemical Society publication contact angles, wetness And adhesiveness, edited by Robert F. Gould (Copyright 1964) (and described here for reference). When a fluid can automatically spread over a surface, the surface is said to be wettable (hydrophilic) by an aqueous fluid. Instead Ground, water-based fluid cannot automatically spread across the surface, the table Considered " hydrophobic ". Liquid / solid contact angles are based on surface heterogeneity (such as chemical and physical properties, such as coarseness), pollution, chemical / physical treatment or solid surface composition and liquid properties and their contamination. Solid surfaces The contact angle can also pulsate. As the solid surface energy decreases, the contact angle increases. As the solid surface energy increases, the contact angle decreases. (Please read the precautions on the back before filling in. '' --- page) Threading • I-- -14- This paper size applies to the Chinese National Standard (CNS) A4 (210X297 mm) A7 B7 12 V. Description of the invention (the energy required to separate liquid from solid surface (such as film or fiber) is as follows: (1) Representation: (1) W = G (l + cos A) Here: W is the adhesion work, the unit is erg / cm2 (χ1〇_3 Joules / square meter) ',', G is the surface tension of the liquid ceremony The unit is dyne / cm (χ103 newtons / meter) and A is the liquid-solid contact angle in degrees. For a particular liquid, the adhesion work increases with the cosine of the liquid-solid contact angle (the contact angle A is 0) Reach the highest adhesion function at any time. Understand the specific surface to the surface of special liquid A useful tool for characterization and responsibility "Figure 1 illustrates the relationship between the solid-liquid contact angle and the adhesion work of a special fluid (such as water). The surface tension is 75 dynes / cm (75χ10-3 Joules / square meter) Table ----------- sai-*.. (Please read the notes on the back before filling in)

Α (degrees) QlQS A 1 + cns A w (.Er. Per square meter) (χΗΓ3 Joules / square meter) Central Consumers Bureau of the Ministry of Economy Staff Consumer Cooperatives Seal 0 1 2 150 30 0.87 1.87 140 60 0.5 1.50 113 90 0 1.00-• 75 120 -0.5 0.5 —- 38 150 -0.87 0.13 10 180 -1 0 0 15- This paper size applies to China National Standards (CNS) A4 size (210x297 mm) A7 B7 Central Bureau of Standards, Ministry of Economic Affairs Printed by the Industrial and Consumer Cooperatives 5. Description of the invention (13) As shown in Figure 1, 'As the adhesion work of a specific surface decreases (the specific surface has a lower surface energy), the fluid contact angle on the surface increases, so "Beads" have a smaller surface area. For a specific fluid, as the surface energy of a specific surface decreases by 41, it is also opposite. Therefore, the work of adhesion affects the interface fluid phenomenon of solid surface work. More importantly, in the present invention, surface energy gradients exemplified by fluid contact angles or discontinuities can be used to prevent fluid transport. Figure 4 illustrates that a small drop of fluid 110 is located on a solid surface. The surface has two regions 丨 3 and i i 5 with different surface energies (illustrated with different intersection lines). In the case illustrated by the fourth circle, the area 113 has a lower surface energy than the humiliation 115, so the droplet fluid wet capacity is lower than that of the area 115. So, droplet! The contact angle A (b) generated in the droplet edge contact area 113 is larger than the contact angle A (a) generated in the droplet edge contact area 115. It should be noted that although for the sake of clarity, the points " a " and " b " are on the same plane, the distance between " a ", " b " does not need to be linear, but it can represent droplets. / Surface contact is related to the surface shape. In this way, the droplet 110 has a surface energy imbalance, so the external example caused by the relative surface energy difference between the regions 1 丨 3 and Π5 (that is, the surface energy gradient or discontinuity) is expressed by equation (2): (2) dF = G [cos A (a) -cos A (b)] dx Here: dF is the net force acting on the fluid droplet, dx is the distance between the reference position " a " and the upper b ", G is defined As before, and A (a) and A (b) are the contact angles at the positions " a " and " b " "_____ -16-(Please read the note in the back of the page before refilling. Packing · Page) , 11 The paper Λ degree applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) A7 B7 V. Description of the invention (14) Solve the cos A (a) and cos A (b) of equation (1) and substitute them Equation (2) gives equation (3): (3) dF = G [(W (a) / Gl)-(W (b) / Gl)] dx Equation (3) can simplify the equation ^ (4): (4 ) dF = (W (a)-W (b)) dx The importance of the difference in surface energy between the two surfaces is clearly shown in Equation (4). The effect of the difference in adhesion work on the change in force amplitude is directly proportional. A more detailed discussion of surface energy effects and capillary phenomena can be found in Textile Science and Technology, Volume 7 'At) §Qrl7ency, Edited by Portnoy K. Chatterjee (1985), Capillary Effects, Theory and Practice, ind. Eng, hem. 61 »10 (1969 ) by AM Schwartz (and described here for reference). As such, the forces encountered by the droplets cause movement in a surface direction with higher surface energy (toward the core in this example). For the sake of simplicity and clarity, the surface energy gradient or discontinuity is illustrated in Figure 4 as a single, distinct discontinuity, or the boundary of 彳 亘 # but different surface energy intervals is clearly defined. The surface energy gradient also has a continuous gradient or a stepped gradient. The force acting on a particular droplet or (droplet portion) is determined by the surface energy of the particular droplet's contact area. The term " gradient " is used here to describe the change in surface energy or adhesion work that occurs at a measurable distance when the difference in surface energy or adhesion work is used. The term " discontinuity " means a type " gradient " or transition in which a change in surface energy occurs at substantially zero distance. In this way, all the 1L discontinuities used here fall within the definition of "gradient". Again, the words "capillary" and "capillary action" are used here to indicate the channel pores, holes, or spaces within the structure, and the permissible fluid is transported according to the capillary action. Wool __j17_ This paper size applies to the country of China 梂Standard (CNS) A4 (2 丨 〇 &^; ^ Publications)-A7 B7 V. Distinguishable (15) The outline of the fine action is expressed by Laplace equation (5):

(5) p = 2G (cos A) / R where: P is the capillary pressure; R is the inner diameter of the capillary (capillary radius); and G and A are as defined above. For fabric permeability, as described by Emery I. Valko, Chem. Aftertreat, Chapter III (l97i), pages 83-113 (also described here for reference), for A = 90 degrees, the cosine of a is zero, And no capillary pressure. For a greater than 90 degrees, the cosine of today is the capillary pressure and the fluid enters the capillary in the opposite direction. Therefore, for hydrophilic aqueous liquids, the capillary wall must have hydrophilic properties in order to obtain detectable capillary phenomena. Also, r must be small enough for p to have meaningful 値, because the capillary pressure decreases as R increases (larger pores / capillary structures). Perhaps at least as important as the existence of surface energy is the special orientation or positioning of the gradient itself relative to the capillary tube or the fluid channel itself. Printed by the Consumers' Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs ----------- install! »* (Please read the note on the back and fill in the page again)-, 1T. Water is used as a reference in this article Liquid, but for illustrative purposes only and not restrictive. The physical properties of water have been clearly defined, and water is readily available and has uniform properties over time. The concept of the work of adhesion to water can be easily applied to other fluids, such as blood, menstrual fluid, and urine, as long as the special surface tension characteristics of the fluid are considered. _ y | The surface energy between the heart and the back sheet causes the relatively low surface of the peach adjacent part of the back sheet to be adjacent to the absorbent core and contact the absorbent core, and the relatively lower surface part is in contact with the skin of the wearer. The back sheet stops the droplets from having

A7

Higher surface energy cores flow to the backsheet with relatively lower surface energy. The movement of the droplet is caused by the difference in contact angle between the lower surface energy portion and the higher surface energy portion, resulting in an imbalance in the surface tension acting on the liquid-contact surface. It is believed that this results in a surface energy gradient and the resulting negative capillary pressure is particularly suitable for perforated backsheets of absorbent articles, such as the backsheet (2 24) of the absorbent article (1). Therefore, by making the perforated back sheet have a surface energy gradient according to the previous description, the possibility of wet penetration can be reduced. Since several in-use forces can easily force the collected fluid to be squeezed out of the pad (for example, from the compression of the absorbent core towards the lower surface of the backsheet), this undesired movement can be achieved by the relatively low surface energy of the backsheet surface To counteract that, the low surface energy can be used for the fluid. When the passage is found to flow out of the heat protection through the opening of the back sheet, the fluid can be repelled. In this way, due to the driving force of the surface energy gradient between the back sheet and the core, the fluid is more easily retained inside the absorbent core. As for the surface energy gradient of the present invention, it is important to keep in mind that the upper and lower limits of any gradient are opposite each other, that is, the back surface region and the core region and the interface define the surface energy gradient. The gradients must be on different sides of the hydrophobic / hydrophilic range. In other words, a gradient must be established from two surfaces with multiple degrees of hydrophobicity or multiple degrees of hydrophilicity, rather than necessarily hydrophobic and hydrophilic surfaces. Nonetheless, the upper surface of the currently preferred backsheet has a relatively low surface energy, i.e., it is generally hydrophobic, so that it has the greatest driving force for the flow of the core and reduces the overall back contact with the clothing surface. In this way, the surface energy gradient in the present invention can provide a synergistic effect with the unidirectional fluid transport property of the arm surface to prevent the streamer from passing through the back sheet. Backsheet—The fluid on the surface encounters two but not driving forces that can counteract its movement from the core to the backsheet and towards the garment. Similarly, the combination of two forces can

A4 size (210X297 mm) The paper ruler is in compliance with the Chinese standard (cnjj A7 B7) Printed by Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Description of the invention (17) Moving to the back sheet can greatly reduce the penetration of moisture A variety of physical parameters must be considered when designing the perforated backsheet and core of an absorbent article according to the present invention, and more particularly, the appropriate size and positioning of the surface energy gradient, so that the fluid can be properly handled. Factors such as the surface energy difference ( Depending on the material used) 'Material mobility, material biocompatibility, porosity or capillary size' overall caliper and geometry, fluid viscosity and surface tension, and whether there are other structures on both sides of the interface. The fluid contact angle difference that provides a surface energy gradient on two adjacent nights must be at least 10 degrees, preferably at least 20 degrees, and the surface with a lower surface energy must have a fluid contact angle of at least 90 degrees, preferably at least i 00 degrees, more preferably At least n 0 degrees, preferably at least 120 degrees. According to the present invention, the contact angle of a layer can be increased by making the surface hydrophilic. To manufacture a second part according to the present invention, The back sheet illustrated in the figure, a piece of polypropylene is extruded on a rotating drum here is formed into a hole-shaped film, and then if necessary, the electric 51 discharge treatment is generally performed according to the following indication: awarded on September 28, 1982 Thomas et al. U.S. Patent 4,351,784; issued June 26, 1984

Thomas et al. 4,456,570; and Thomas et al. 4,535,020 issued on August 13, 1985 »The disclosures of each patent case are hereby incorporated by reference. A surface treatment with a relatively low surface energy is then applied to the user-facing side of the apertured formed film, preferably cured. A suitable surface treatment is a polysiloxane release film (available as Syl-Off 7677 from Dow Corning, Michigan, Dow Corning) in which a crosslinking agent (Syl-Off 7048) is added in 10 parts to 10 parts. Another suitable surface treatment is a UV-curable polysiloxane coating, which includes two polysiloxanes available from Strange Corporation's Polysiloxane Products Division (Waterford, New York, UV9300 and UV9380C-D1). (Notes on the back page)

A7 B7 Printed by the Shellfish Consumer Cooperative of the Central Bureau of Quasi-Ministry of Economic Affairs. 5. Description of the invention (18 cases are 100 parts by 2.5 parts by weight. When this silicon-oxygen blend is used in the formed film shown in Figure 2 At the time of application, the application rate of the coating is at least 0.25 g, preferably 0.5 to 8.0 g of polysiloxane per square meter of surface area, which can be satisfactorily applied, but the other coating degrees are confirmed to be suitable for the back sheet properties and the stability of the fluid characteristics. Certain uses. Other suitable materials include, but are not limited to, fluorinated materials, such as fluoropolymers (such as polytetrafluoroethylene (PTFE), trade name Teflon) and gas fluoropolymers. Others have proven suitable for reducing surfaces The materials that can be used include hydrocarbons, such as petroleum pores, alkanes, etc., but because of the biocompatibility of polysiloxane materials, it is currently best used for absorbent materials. The "biophase" is used here The term "capacitive" indicates that the material has a low degree of specific adsorption, in other words, it has a low affinity for biological species or biological substances such as glucose-proteins, platelets, etc. In this way, these materials are more resistant to biological substances than other materials under the conditions of use To a higher degree of deposition. This property makes it more capable of retaining surface energy properties for subsequent fluid processing situations. Without biocompatibility, the deposition of such biological substances will increase the surface roughness or non-uniformity, as a result This results in an increase in drag force or fluid movement resistance. As a result, biocompatibility is equivalent to a reduction in drag force or fluid movement resistance, so the fluid approaches the surface energy gradient and capillary structure more quickly. Maintaining substantially equal surface energy also maintains the original surface energy difference for subsequent use. Fluid deposition. However, biocompatibility is not a synonym for low surface energy. Some materials, such as polyurethanes, are biocompatible to some degree, but still have a relatively high surface energy. Currently preferred materials , Such as polysiloxane and fluorinated materials, preferably with low surface energy and biocompatibility. ”Another preferred method for converting vinyl film tapes into porous formed films is -21 Standard (CNS) A4 size (210X297 mm) (Please also read the notes on the back and fill in o_. Packing. Page)

.1T line A7 A7 19 V. Description of the invention (High-pressure fluid spray gun made of water is applied to one side of the film, and at the same time, emptying is applied to the adjacent opposite side of the film. This method is detailed in commonly assigned US patent 4,609,518,19 "Issued on September 2nd. _ Etc .; Howling 4,629 643 awarded to Curri on December 16th; 4,637,819 to Ouellette et al. On January 20, 1987; 4,681,793; M95,422 awarded to coffee and others on September 22, 1987; 4 778 644 to cli and others on October 18, 1988; 4,839,216 and 1989 to Curro and others on June 13, 1989 4,846,821 awarded to Lyons et al. On July 11, 2014 (and described here for reference). If necessary, the formed porous film can be treated with electric dream discharge. Then the silicon oxygen release coating is applied or printed on the porous The first surface of the formed film is preferably cured. The surface energy of the silicone treated surface is lower than the surface energy of the backsheet. In addition, the layer with a lower surface energy, that is, the porous polymer backsheet A material with a low surface energy is mixed into the layer during the manufacturing of the layer, so the layer becomes hydrophobic during the manufacturing. This layer has a low surface energy material applied to its surface. Typically, m includes a low surface energy material that accounts for at least 5% of the total weight of the layer. According to the present invention, the absorbent article combines various elements by any means well known in the industry, such as Topsheet, backsheet, and absorbent core. For example, the backsheet—and / or the topsheet—can be adhered to the absorbent by an even continuous adhesive layer, a patterned adhesive layer, or an array of individual adhesive threads, spirals, or dots. The cores may be adhered to each other. In addition, the components may be thermally fused, pressure fused, ultrasonic fused, mechanical fused, or any other suitable joining means known in the industry and any combination thereof. The absorbent article according to the present invention may be used in sanitary napkins. , Panty liner, adult loss ---------- pain 1 ▲ *-(Please read the precautions on the back before filling in, 1T printed by the staff consumer cooperative of the Central Standards Bureau of the Ministry of Economic Affairs-·· 1_1 ms —1 1 ^ 1 Five A7 B7 Printed by the Consumers 'Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs' Invention Note (2 £)) Prohibited products and baby diapers. Therefore, in addition to the components described herein, the absorbent article may include an elastic fastening device , Yiwu Depending on the intended use of the article. In particular, the present invention can be used in sanitary napkins or panties. Examples " The absorbent article of the present invention is prepared as follows. The back sheet is composed of the following original fabric: a) Non-woven 28 g / m2 with 14 g / m2 spunbond layer and 14 g / m2 meltblown layer (except MD 2005 from Corovin GmbH, Bein, Germany). B) Polyethylene nozzle formed film according to US 3 929 135 from Trdgar, USA Film company. The film has circular pores with an open area of 19%, an embossed thickness of 0.48 mm (funnel height), and a pore diameter of 0.645 mm facing the garment surface. The back sheet is formed by joining the aforementioned film layer (b) so that the pores of the protrusions face the mating surface of the absorbent article and the non-woven (a) where the meltblown becomes the garment-facing surface of the absorbent article. Each test sample was prepared under the same conditions, but special treatment should be applied to materials forming part of the backsheet structure or making contact with the backsheet structure. As for the test samples, the sanitary napkins of the Brewer Company (Schwalbach, Germany) under the trade name "Always Ultra Normal" are manufactured according to normal manufacturing procedures, but the degree of back attachment to the overall structure is low. In this way, the back sheet composed of an impervious (impervious to liquid and gas) plastic film can be removed and replaced with a breathable back sheet. The β sanitary napkin structure is the same in each case, but with an additional surface treatment (by polysiloxane The coating reduces the surface energy of the liquid / solid surface) 〇23- The standard of the private paper applies the Chinese National Standard (CNS) 8.4 (210 × 297 mm) — €-*-(Please read the note on the back before filling in the page )

.1T line A7 B7

V. Description of the invention Example L (Chun Lao, ^ The hostile breathable back sheet is a unidirectional tapered perforated film (cpT) made of low-density PE (production code χ [1522) produced by Tredegar American Corporation. ) And is in contact with an absorbent core consisting of a fabric and an absorbent coagulation material. The contact surface facing the user is a non-woven laminate (trade name MD 2005) layer made by the German company Covin Co., Ltd. The woven laminate contains 14 g / m 2 spunbond and 14 g / m 2 meltblown material. No additional surface treatment is applied. Example 2

The structure is the same as that in Example 1 but the garment facing side (30) of the absorbent core is facing the wearer facing the perforated unidirectional membrane. The surface (B) is connected, and is supplied by Walkis Denmark (material code Metmar Kotka). G / m2 heat-cured polysiloxy retreated. Polysilicone is manufactured by Downing Corporation of the United States and supplied under the trade name SYL_〇FF 7048 cross-linking agent / SYL-OFF 7677 release coating agent (mixing ratio 10%: 90 Q /.). Example 3 Same structure as Example 1 but with a porous unidirectional film (CPT). Made of low-density PE produced by Tredegar, USA (manufacturing code χ_ 1522). The user-facing surface (31) contacts the absorbent core (200). 3 g / m² heat-curable polysiloxane treatment. Polysiloxane is manufactured by Dow Corning Corporation of the United States and supplied under the trade name SYL-OFF 7048 cross-linking agent / SYL-OFF 7677 release coating agent (mixing ratio 10%: 90%). --Example 4 — Porous unidirectional membrane system with the same structure as in Example 1 but manufactured from low density PE (84%) and polyoxygen (16%) thermal blend. Manufactured by Tredegar Film Products (---- ------ # I · * (Please read the precautions on the back before filling in the page. Printed by the Central Consumers' Bureau of the Ministry of Economic Affairs.

m I-I A7 B7 22 V. Description of the invention (Netherlands) Available at the request of Baoyu Pescara Technical Center. The materials are manufactured under conditions comparable to those of code X-1 522. Example 5 The structure is the same as that of Example 3 but the porous unidirectional film (cpT) is made of high-density polyethylene (Supplied by Tredegar Film Company, USA, development code 15112). As shown in Example 3, the surface of the perforated unidirectional film (cpt_hdpe) facing the user 3 1 (in contact with the absorbent core) was additionally treated with a heat-curing polysiloxane having a basis weight of about 3 g / m 2. Polyoxygen was manufactured by Dow Corning Corporation (s YL_〇FF 7048 cross-linking agent / SYL-OFF 7677, trade name, 100 / :: 90 // ratio). Test method — Methods la and lb-wet-induced wet age penetration test to assess the resistance of breathable backsheets or backsheet structures to the transmission of body emissions. “The test solution composition can be simply changed to directly measure the liquid-impermeable porous back. The film's overall range of body emissions is detailed in the Methods section below. Basic Principles of the Method The basic principle of the test is to simulate the use of body discharge loads on disposable absorbent articles. To do this, make a product, such as a sanitary napkin, and place it flat on a transparent test stand made by perspex. The orientation of the product is exposed to the wearer's surface (upper layer) and the garment-facing surface of the back sheet is in contact with the test stand (bottom side). Suspended above the sample to be analyzed is a liquid hybrid pumping system that can deliver any required amount of test liquid (either in a burst or in a series of steps required). An absorbent filter paper is provided between the outermost surface of the test sample and the transparent test chamber. The filter paper is in contact with the back sheet of the test sample to simulate, for example, the attachment of sanitary napkins to underpants or urine. The paper size is applicable to the National Solid Standard (CNS) Α43 «^ Γ (7) 〇χ297 ^ iTj ---.--- ί- ---- t .-------. 玎 ------. ^-(Please read the note on the back and fill in the f page)--Beigong Consumer Capital Cooperative, Central Bureau of Standards, Ministry of Economic Affairs Imprint «. 25 V. Description of the invention () '— The cloth incontinence device is in close contact with the clothing. Below the transparent test station is a mirror = you can directly observe any changes in the absorption filter paper (wet by the colored falling liquid simulating the discharge of body impurities). For example, · if the perforated back sheet is not enough to prevent the liquid from being transported, the f paper is moistened with the colored solution, which can be observed in a mirror. The degree of transmission liquid impurities can be the weight of the absorption filter paper (simulated underwear) or better. The measurement can also record the time dependence of the delivery. The test solution is introduced into the test sample via a quasi-conveyor system such as a simple dropper according to the following test method. Once the pad is loaded with the test solution, the solution is absorbed to the test sample for 1 minute. The top sheet (facing the wearer's surface) does not contain a test solution cell. After waiting 1 minute, the sample The pressure of 70 g / m2 is believed to reflect the more severe pressure in general use. The test sample is maintained at a pressure of 70 g / m2 for 30 minutes and measured at intervals of 5 minutes, such as measuring colored station dye on the absorption filter paper. Area. It is important to measure for a long time because some body discharges such as blood movement or infiltration are time consuming. It is also important to understand the mechanism of failure to wet through and to ensure that the correct test design is used to correctly evaluate. For example, the relatively large pores ( More than 200 microns) Respirable backsheets are more likely to fail due to the squeezing process (for example, the pressure applied when sitting down forces the liquid to flow out through a relatively large pore). This happens quite quickly when the test sample is pressurized. In addition, When the pores are smaller (200 microns per hour), a simple diffusion or capillary side diffusion process is more likely to occur. These processes are slower than the extrusion process. — Simulated high gully gushing Measurement of the simulated height load in the first test design (the test solution is suddenly turbid in large quantities) --- -26 -___ This paper is in accordance with the Chinese National Standard (CNS > A4 size (210X297mm)) Note of Φ

Page I Printed by the Shellfish Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs

A7 V. Description of invention () 24 J Imperviousness of the back sheet with holes under the Central Standards Bureau of the Ministry of Economic Affairs (printed by Shellfish Consumer Cooperative). This kind of use situation is the most difficult to control (often occurs when lying down for a long time or suddenly standing up after sitting). Because the absorbent core (or structure) typically requires a fixed time, it fully functions to absorb and combine body emissions. For example, fiber Plain fiber * dimensional (air-laid fiber fabric) and absorbent and coagulating material make up the absorbent core for several minutes to fully absorb and tightly bind the fluid. Unbound emissions occupy spaces or inter-fiber spaces and are highly mobile, moving quickly to a porous backsheet under pressure or being transported through the backsheet by capillary force. The interval / yielding simulation test is described in detail above, and is performed on a typical sanitary napkin in the following cases: 'Test solution gushing volume (ml) Gushing rate (ml / min) Applying pressure (after waiting for 1 minute) The result is based on 5, 10 'Dye area / wet through at 20 and 30 minutes are reported in cm2. Method lb: Reverse self-rolling hibiscus. Measure the impermeability of breathable backsheets under more typical load conditions in the first experimental design. Here, body emissions occur periodically and repeatedly, rather than a single gush. A repeated simulation test of a typical sanitary napkin is detailed in the previous description but with the following special conditions: a 5 ml test solution load is placed in the center of the special test sample (see below). Allow the test solution to absorb for 1 minute and pressurize the sample for 5 minutes. Measure the size (area) of wet through during this period and note the green. Immediately remove -27- This paper is again suitable for China National Standard (CNS) A4 size (210X297mm)-f-- «· * (Please read the precautions on the back before filling the OT page) into urine + 1% surfactant or artificial menstrual blood + 1% surfactant tampon 10 ml 10 (ie 10 ml / 60 seconds): 70 g / cm2, ιτ line A7 B7 V. Description of the invention. ) --- The pressure again caused the sample to be subjected to the second 5 $ liter test solution load. After waiting for i minutes for liquid absorption again, the sample (now containing 10 ml of test solution) was pressurized for 5 minutes. At this time, measure the size (area) and record the green. Immediately remove the pressure again to subject the sample to the third 5 liter test solution load. After waiting for 1 minute for the liquid to absorb again, the sample (now containing 15 ml of the test solution) was pressurized for 5 minutes and the station dyeing size was measured again (wet permeated and the cycle was repeated until the pad was loaded with 20 ml. The test solution was poured out of the volume (ml ) Maximum load gushing rate (ml / min) Applying pressure (after waiting for 1 minute): Synthetic urine + 1% surfactant or artificial menstrual blood + 1 /. Surfactant | Overlay 5ml load 20ml 2.5 ( That is, 5 ml / 2 minutes) 70 g / cm² is reported in units of cm² at 5, 10, 15 and 20 minutes. Dye type and volume economy are used in the test method. The Ministry of Standards and Industry Bureau of China ’s Beige Consumer Cooperatives Co., Ltd. wants to reliably evaluate the design of possible breathable backsheets, and the test solution conditions must match the end use of the product. The sanitary napkins are designed to accommodate menstrual emissions. These emissions are quite variable for different women Large and contains varying levels of fatty acids and detergent contaminants from sanitary cleaning work (washing, -laundry, etc.). This temple ingredient is extremely active, showing The facial formula is extremely low. The performance of normal menstrual discharge can be simulated using artificial menstrual blood and mucoprotein derived from sheep blood and adding surfactants (described later in detail). The amount of test solution that is poured out at one time is as high as 15 ---- --- 28 -_____ This paper is suitable for proper financial management (〇 called eight 4 «^ (2 丨 〇 > < 297 mm) '' — 26 A7 V. Description of the invention (ml is high enough so it is still used for gushing 99% of the cases fall into this range. Similarly, sanitary napkins can repeatedly load up to 20 ml (95. /. Sanitary napkins fall into this range) but rarely higher. Typically sanitary pads load 10 ml ( (90% of diarrhea) or below. K Although incontinence 婴儿 baby diapers or inner bell peppers (pads used by women during the menstrual period or at the beginning / end of menstrual periods) have different needs than sanitary pads, but The test solution closest to the urine discharge can even be used in sanitary napkins. Nonetheless, 'Body pollutants (fat · acid, surfactant and detergent residues) still exist' Known that adding surfactant to synthetic urine can Match the situation in use. Due to the common use of women Hygiene supplies (sanitary pads, panty liners) are lightweight incontinence devices, so they are also suitable for evaluating the breathable backsheet material or structure using synthetic urine containing surfactants. The volume can be selected to reflect this use Typical situation where the product may be exposed. For diapers or more severe incontinence applications, it is easy to modify the method to simulate a higher test solution load volume and delivery rate. Preparation of solution: synthetic urine +1 % Interfacial agent (UreaPt / i 〇 / 〇 Printed by Shellfish Consumer Cooperative of Central Standards Bureau of the Ministry of Economic Affairs-Turtle. (Please read the precautions on the back and fill in ^^ page) Synthetic urine test solution first _ Kilogram of master batch prepared, take out smaller amounts as needed and add surfactant. The composition of each batch of 10 kg UreaB is as follows: Chemical composition of the formula / 10 kg batch of urea 200 g of vaporized sodium NaCl 9 g of magnesium sulfate MgS04.7H20 11 g. Calcium gasified CaCl 2 6 g This paper is in accordance with Chinese standards (CNS) ) Α4 size (210X297 mm) r I 9693 grams of distilled H2O water All reagents are " reagent grade ", available from standard chemical suppliers. In addition, the surfactant was supplied by the American company Pegesis (Peosperse 2000). For individual measurements / mixed 90 ml of UreaB solution with 10 ml of surfactant to prepare 100 ml of test solution UreaB / 1% surfactant. UreaB / The 1% solution must be mixed frequently to ensure that the components are not separated before use. Preparation of poor test solution: artificial menstrual fluid + 1% interfacial activity 丨 Artificial menstrual fluid (AMF) is based on modified sheep blood to ensure viscosity and conductivity The properties, surface tension and appearance are quite similar to human menstrual fluids. In addition, the 2-in-1 surfactant (1%) in the test fluid (supplied by Pegesis Company in the United States) more clearly reflects the sanitary hygiene products (under limited circumstances affected by diet) ) The introduction of additional surfactants or unpredictable levels such as fatty acids reduces the severe conditions of blood surface tension. Low surface tension menstrual blood is most likely to cause breathable | absorbent articles such as sanitary products to fail to wet through. : 1) Defibrotic transgenic sheep blood was obtained from Unipath SpA {Garbagnate Milanese / Italy}. 2) Lactic acid was tested from JT Baker Netherlands (85-95% w / w). It is printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. 3) Hydroxide (KOH) was obtained from Sigma Chemical Company (USA, Test Grade) 4) Phosphate-buffered saline tablets from Sigma Chemical Company (USA, reagent grade) 5) Sodium gasification from Sigma Chemical Company (USA, reagent grade) 6) Gastric mucus protein from Sigma Chemical Company (USA, Type III, CAS 84082-64-4) 7) Distilled water. ___- 30 -____ This paper size is in accordance with Chinese national standard (CNS> A4 size (2 丨 0 X 297 mm). 5. Description of the invention (28) Step Dissolve lactic acid powder in distilled water to prepare 9 soil i% lactic acid solution. Step 2: Prepare 10% potassium hydroxide (KOH) solution of each solution of KOH powder in distilled water. Step 3: Dissolve in 1 liter of distilled water as instructed to prepare a phosphate buffer pH = 7.2. Step 4: Prepare the following composition solution and heat slowly To 45 soil 5. (:: 460 soil 5 ml of phosphate buffer solution 7 · 5 ± 0.5 ml of hydroxide. Potassium solution: Step 5: Slowly dissolve (normally stir) about 30 grams of gastric mucus protein prepared in step 4 Preheat (45 ± 5 ° C) the solution to prepare a mucus solution. Once the temperature of the dissolved solution is increased to 50-80 ° C, the mixture is covered for about 15 minutes. Reduce the heat while maintaining a fairly constant temperature of 40-50 ° C and continue to stir for 2.5 Hours. Step 6: Remove the solution from the hot plate and allow the solution (from step 5) to cool below 40. 0. Add 2.0 ml of 10% lactic acid solution and mix thoroughly for 2 minutes. Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Step 7: Place the solution under pressure In the pot and heat to 121 ° C for 15 minutes. Step 8: 'Allow the solution to cool to room temperature and dilute 1: 1 with defibrillated sheep blood. Prepare AMF, measure viscosity pH and conductivity to determine that the blood characteristics are close to The range of normal menstrual blood {(see reference H. J. Bussing " zur 31 Chinese paper standard (CNS) A4 specifications (210X 297 mm) for each paper size) A7 V. Description of the invention (29

Biochemie de Menstrualblutes " Zbl Gynaec, 179, 456 (1957)}. Viscosity range from 7 to 8 (unit cstK). The range of pH is from 6.9 to 7.5 and the conductivity is from 10.5 to 13 (unit: mmho). If the viscosity is not within the range specified above, it cannot be used and a new AMF batch must be prepared. Need to adjust to the amount of gastric mucus protein. Because it is a natural product, the composition varies from batch to batch. For each measurement ', 90 ml of AMF solution (maintained at 25 ° C) and 10 ml of surfactant were used to prepare a typical 100 ml of surfactant-containing AMF test solution. AMF 1% surfactant solution must be mixed constantly to ensure that the ingredients do not separate before use. Use the solution only within 4 hours of preparation. Method 2: Fluid contact angle stabbing The contact angle test is a standard test to evaluate the interaction properties between a solid surface and a liquid droplet. The contact angle formed by the droplet on the surface can reflect several interactions. Liquid properties, surface tension, solid properties and surface errors. Besides liquid-solid interaction properties. Droplets on rough surfaces usually have higher contact angles than droplets on smooth surfaces with the same chemical composition. If the contact angle of the small water droplet is greater than 90 degrees, the surface is considered to be " hydrophobic " to the liquid. If the contact angle is less than 90 degrees, the surface is considered to be hydrophilic. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs I I > (Please read the notes on the back before filling in the page

The basic principle of the 1T method The contact of a liquid on a surface can be measured by a variety of techniques, from the optical analysis of droplets on the surface to a more reliable technique1 The technique used to measure the contact angle is " Wilhelmy plate technique ". The principle of this technique is to suspend a solid sample from a water container, slowly lower the sample to a predetermined depth in liquid water, and then remove it. The hysteresis force (zero immersion depth) exerted by water on the contact material sample is measured by a microbalance A7 B7 V. Description of the invention (3 () Quantities' Then the contact angle cosine is obtained by the following formula: Here F = the balance measures zero depth Sample force (mg) p = sample perimeter of the interface (cm) ST = surface tension \ dyne cm) C0 (|) = cosine of contact angle g = acceleration of gravity (at the measurement position) used to measure the contact angle The equipment is an automated dynamic contact angle analyzer (model DCA-322) manufactured by Cahn Instruments (Cedtos CA 90701-2275, U.S.A.) »Prepare samples (24 mm x 30 mm) from various materials (see attached table) and Attach to the glass sheet as specified in the equipment manual. Care must be taken to ensure that the material sample is not in contact, otherwise the surface of the material will be contaminated. Each material is measured 5 times to ensure the accuracy of the measurement and reduce the influence of manufacturing variables or surface irregularities. Table 1: Measure the contact angle of the surface of readily available materials (after burying where the surface tension decreases). I--* > (Please read the notes on the back first and save) Printed by the Central Standards Bureau of the Ministry of Economic Affairs, printed by the Shellfish Consumer Cooperative, 33 Sheets are applicable to Chinese National Standards (CNS) A4 specifications (2 丨 〇 > < 297 posthumous A7 B7 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (31) Example Surface untreated contact angle A contact angle A core fabric supplier: Waliksoft Denmark, Metmai ^ Kotkar about zero 131 B LDPE Film code X-1522 Supplier: Tredegar USA 102 121 C LDPE film code X-1522-both sides processed Supplier: TrqdegarUSA 102 144 D LDPE film code X-1522-but unperforated Tredegar film products company Netherlands processed 80 on both sides 103 E LDPE + polysilicon (8%) 92 film (unperforated) Tredegar Film Products Co., Netherlands processed on both sides 92 na F LDPE + polysilicon (16 〇 / 〇) film processed on both sides Tredegar Film Product Co., Netherlands 102 na G iron Furlong film (with unperforated) 3M American company 130 na ----------- #-t― (Please read the precautions on the back before filling in page 0), ιτ 线 -34- This paper Applicable scale National Standard (CNS) A4 specification (210X297 mm) A7, Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs, Consumer Cooperative Seal A7 ____B7 _ V. Description of the invention (32) Contact angle of liquid on the surface and porous material to transport liquid through capillary process or squeeze The pressing process is related to the surface difference or surface structure, the nature of the liquid, the interaction between the liquid and the surface, and the rotation of the conveyor. This test uses a test solution that is steamed with high hydrophilicity and high surface tension. Liquid or urine type discharge is higher. Therefore, the absolute contact angle described in the table must be carefully examined. A contact angle with water greater than 90 degrees does not mean that the material pores have negative capillary forces on the liquid type discharge. With contact angle The increase will affect the degree / efficiency of the liquid transport (capillary or squeeze based) passing through the material. Na = Not applicable, the material already has a high contact angle. Table 2: Results of the wet-out test Example test solution test wet-through (sqcm) (sqcm) Unprocessed Processed * 1 UreaB / 1% la 41 ~ AMF / 1% la 70 AMF / 1% lb 90 2 UreaB / 1% la 41 Λ AMF / 1% la 7 0 U π AMF / 1% lb 90 U 20 3 UreaB / 1% la 41 1 〇AMF / 1% la 70 I. i 1 il AMF / 1% lb 90 1 0 7 1 4 UreaB / 1% la na J 1 AMF / 1% 1 a_ na 1 1 AMF / 1% lb na 5 UreaB / 1% la 18 mj 〇AMF / 1% la 30 Λ AMF / 1% lb 40 u 7 -35- This paper size applies to Chinese national standards ( CNS) A4 size (210X 297mm) „^^ ΐτ ----.-- (Please read the remarks on the back and fill in the pages)-· A7 printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ___ — __B7_ 5 Explanation of the invention (33) _ Method 3: The unidirectional flow test of the military command Zhizhi is used to quantify the directional flow properties of the surface of the porous film to the body's emissions. The composition of the test solution can be simply changed to directly measure the effect of the porous surface on the entire range of body discharge, which will be described in detail later. One of the Taiyuan methods of the method The basic principle of the method is to evaluate the performance of the one-way porous film on simulated body discharge fluids. A good perforated film is a film that prefers fluids to be transported from one side to the other rather than reversed, unless the film will reverse and repeat the test. Of course, in addition to the unique directional properties of fluids for good porous membranes, it has also been shown that carcass transport in this direction is extremely low for the suction backsheet construction. *, * Read To evaluate the directional liquid transmission rate of a porous membrane, perform a single test in which the liquid-saturated absorbent structure is placed on top of a porous membrane, and the porous membrane is placed on top of a stack of absorbent absorbent paper. Apply pressure to the entire assembly (saturated absorbent material, film, and absorbent paper) and measure the extent to which the test liquid is transmitted through the perforated film to be absorbed by the absorbent paper. In the second experiment, the film direction was reversed and the test was repeated. The magnitude of the liquid transport through Surface 1 and Surface 2 was recorded and evaluated. In particular, a stack of 10 sheets of 12 cm X 12 cm commercially available filter paper / absorbent paper {Cartiera Favini SpA, Italy; Abssorbente Bianca " N30 " (local supplier Ditta Bragiola SpA Perugia, Italy)} Weigh and place it flat on the test stand, just below the missing code of the crane. A sample of 8.5 cm x 8.5 cm porous film to be evaluated is placed on the top of the suction paper (any surface marked ^ is labeled as surfaces 1 and 2). A layer of fully saturated absorbent material is placed on the perforated film. The absorbent material is composed of two commercially available air-laying absorbent fabrics with a basis weight of 63 gsm (each piece) obtained from Walkis 0ft, Dan ----- ^ ----- Packing I (please read the precautions on the back again) Fill in C.4

• HI II 1 -I m n ^ ··

A7 Β7 Printed by Zhengong Consumer Cooperative, Central Bureau of Standards, Ministry of Economic Affairs 5. Description of the invention (34) Wheat supplier code Metmar Kotka, used to simulate a liquid-saturated absorbent core. Each piece of fabric measures 5 cm x 5 cm systematically stacked on top of each other. The fabric structure is then completely immersed in synthetic urine (see solution detailed in Method 1) for 1 minute to ensure complete saturation. The fabric was taken out of the liquid and left standing for 60 seconds to allow the excess fluid to drain, and then placed on top of a perforated membrane. The saturated fabric is located in the center of the perforated film, and the perforated film is also placed in the center of the suction paper stack. At the end of the test, a perspex block (size 8.5 cm X 8.5 cm) was placed on the top center of the saturated fabric structure, the weight was automatically lowered onto the sample, and a pressure of 130 g / cm 2 was applied for 60 seconds :. The weight drop and time are controlled by a simple electronic device to ensure the reproducibility of each experiment. The pressure exerted on the entire assembly (saturated absorbent material, film, and suction paper) causes the liquid in the saturated fabric to be squeezed onto the film and the direction of liquid transmission through the perforated film is conducive to the liquid moving through the film and suctioned paper absorb. When the code is removed, the layers will be separated, and the blotter paper will be wet and weighed by the liquid. The weight difference (front / rear) was recorded and compared with the second experiment, in which the direction of the 'porous membrane was reversed and the extent to which the test solution was transmitted through the reverse porous membrane was measured. Table 3 Examples of porous membranes and alternative materials obtained from some companies. The test results are detailed in Table 3 »-. Please read the precautions on the back again-Pack-Page) • 1Τ Line -37-

V. Description of the invention (35 A7 B7

CPT (LDPE) Vendor Code: X-1522 Tredegar U.S. Company UreaB / 0% AMF / 0% 1.80.8 Please-Read Back Note Example 2: CPT (HDPE) 0.6 Vendor Code: 1 5 112 Tredegar U.S. Company UreaB / 0% AMF / 0%-

Example ___ Air-laid fabric (two layers each with a basis weight of 63 g / cm2) Vendor code: Metmar Kotka, Walkisoft Denmark

UreaB / 0% 3g / m² Poly dream oxygen 0.5 0.3 5g / m² Polysiloxy Oxygen only fill in the lower level and then fill in% r. _ Page order 2.7 2.7 Staff Consumer Cooperative of the Central Bureau of the Ministry of Economic Affairs Consumer Cooperatives AMF / 0 % Test solution: Test solution UreaB / 0% Preparation of test solution Synthetic urine Urea B / 0% was prepared in the same way as test solution 讥 B / 0%, but no surfactant was added to the test solution. Method 4: Macro Measurements for Open Faces — Disposable objects designed to contain body waste and with breathable backs. Designed to allow air and water vapor to communicate with the external environment. This process (for consumption -38 printed by the Ministry of Economic Affairs of the Central Bureau of Standards, Bureau of Work and Consumer Cooperatives -3Q-, invention description (31) the degree or efficiency of benefits is related to the breathable = area of disposable objects, especially The open area next to the body's imaginary area may be blocked: body: Shao open air is related. This test only evaluates the open area of the permeable back sheet based on the local degree and average degree of the overall product. The basic flexion of the method can be Measure the open area of the absorbent article that contains the breathable backsheet structure assembled or combined to form the breathable backsheet structure. One toe: The measurement of the open area of the material is quite straightforward. The material sample is inspected with a microscope and recorded with a green microscope magnified image or static Photo. Then the image is placed on millimeter squared paper, which is convenient to calculate the number of holes per square centimeter and the area per hole. In addition, the image can be counted to describe the number of holes per square centimeter and the area of the hole. The open area is simple It is defined as the area of each hole and divided by the total area of the analysis.: The open area of the absorbent article with breathable back sheet is mainly determined by " Main open area •, measured. Breathable areas of low importance are only evaluated as part of the average open area of the total product M. For example, the absorption capacity of an absorbent article is provided in areas that are not in close contact with the skin or the absorbent article. It is not necessary to evaluate the skin area as part of the calculation of the "main open area". Step 1: The product is inspected by microscopic microscopy. If there are regions with different porosities, they are quantified and classified. If there are different Transparency zones, typically penalties are expected to identify only a few areas of permeability or non-permeability. However, if this is not the case, each zone can be marked for later evaluation. ) Α4 specifications (2 丨 〇χ 297 公 楚

Printed by the Shellfish Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs Step 2: ， = Take a micro-magnified image or a still photo of each district. The image is placed on millimeters and ten squares of paper, which is convenient for calculating the number of holes per square centimeter and the area of each hole. = Out 'image can be counted to determine the number of holes per square centiforest and the open area of the hole surface is simply defined as the area of each hole and divided by the total area under analysis. Continue to analyze the areas with different porosity or respiration . Then calculate the "average open area" value of the whole product. Step 3: "The main open area" is simply the area open area calculated in step 2: Child Area for the care #Respirable absorbent articles when used Areas that contribute the most. The evaluation of the Wangyao District and the Second District was achieved in the following two ways. Manifestation 1: Objects are used by a representative group of users (such as sanitary napkins or lightweight wet-women) and the objects are located close to the body and where obstructions may occur. This is the main evaluation area and there are holes on the back side. These areas are classified as " main open area " area β Method 2: The object is purely technically evaluated by the database analysis. The characteristics of the database analysis and objects may affect the protection. The cushion is applied to the body (for example, to measure the flexibility of the 'object size' thickness, etc.) compared to known fitting characteristics. The analysis of pure technology can draw the main area and the secondary area. Examples include porous membranes and current alternative materials from various companies. The results are detailed in Table 4. f Please read the precautions on the back before installing.

.IX Line Paper Size_CNS National Standard (CNS) Α4 ^ 72ΐ〇ί ^ ϊ ^ A7 B7 V. Description of Invention (38) Table 4: Material CPT (LDPE) Supplier Code: X-1522 Tredegar USA EVA-HEX Supplier Daimar: 4017050 Tredegar US company CPT (HDPE) Supplier code: X-15112 Tredegar US company hole number N / sqcm 110 surface surface 2 99 surface 1 surface rain 2 average hole area 0.43 0.13 open area% ' 47 14

Please read first 2 of the back

Icm page. Printed by the Central Standards Bureau of the Ministry of Economic Affairs and Consumer Cooperatives. The aforementioned film is a three-dimensional space film with tapered pores, so the pore sizes on each surface are significantly different. Surface 1 is defined as the surface facing the wearer as the material of the breathable backsheet when in use. 41-This paper;? Jt applies Chinese National Standard (CNS) A4 threat (210X297 mm)

Claims (1)

Patent No. 86 丨 06433, Chinese Patent Application, Amendment of Patent Scope (February, 89) Patent Application 囷 1.-Disposable absorbent article, including-a liquid permeable top sheet, a layer of absorbent and A back sheet 'The core is between the top sheet and the back sheet, the back sheet includes a liquid permeable polymer film with unidirectional fluid transmission towards the core' The core includes a fluid storage layer and the back sheet The film package-looking outside the layer, the core and the back sheet each include at least one layer where the layer has a west-facing wearer's face and a garment-facing side, and each surface of the second layer has a flow contact angle; and JT the absorption The lower part of the object is from the clothing-facing surface of the fluid-retaining layer (the magically extends to the clothing-facing surface of the outer layer (inclusive), where at least one of the lower two layers faces the mating human surface and has a fluid contact angle greater than that of the adjacent layer-facing clothing. Surface fluid contact angle 2. A disposable absorbent article, including a liquid-permeable topsheet absorbent core and a backsheet, the core being between the topsheet and the backsheet, the backsheet comprising a fluid polymer The film has a unidirectional orientation towards the core The core includes a fluid storage layer and the back sheet includes an outer layer, and the core and the back sheet each include at least one layer, wherein the layer has a surface facing the wearer and a garment facing side, each of the two layers The surface has a contact angle; and the lower part of the stomach absorbent article extends from the fluid storage layer facing the clothes to the outer layer facing the clothes surface (inclusive), wherein at least one of the lower two layers faces the clothing surface, and the table has a fluid angle greater than that of the adjacent layer It is adjacent to the contact angle of the fluid facing the human face. It is called 3_—a method for producing an absorbent article such as the scope of patent application No. 丨 or 2 including the step of applying a low surface energy layer material to the surface of the layer. GM China National Standard (CNS) A4 (210X297 mm) Patent No. 86 丨 06433, Chinese Patent Application, Amendment of Patent Scope (February, 89) Patent Application 囷 1.-Disposable absorbent article, including-a liquid permeable top sheet, a layer of absorbent and A back sheet 'The core is between the top sheet and the back sheet, the back sheet includes a liquid permeable polymer film with unidirectional fluid transmission towards the core' The core includes a fluid storage layer and the back sheet The film package-looking outside the layer, the core and the back sheet each include at least one layer where the layer has a west-facing wearer's face and a garment-facing side, and each surface of the second layer has a flow contact angle; and JT the absorption The lower part of the object is from the clothing-facing surface of the fluid-retaining layer (the magically extends to the clothing-facing surface of the outer layer (inclusive), where at least one of the lower two layers faces the mating human surface and has a fluid contact angle greater than that of the adjacent layer-facing clothing. Surface fluid contact angle 2. A disposable absorbent article, including a liquid-permeable topsheet absorbent core and a backsheet, the core being between the topsheet and the backsheet, the backsheet comprising a fluid polymer The film has a unidirectional orientation towards the core The core includes a fluid storage layer and the back sheet includes an outer layer, and the core and the back sheet each include at least one layer, wherein the layer has a surface facing the wearer and a garment facing side, each of the two layers The surface has a contact angle; and the lower part of the stomach absorbent article extends from the fluid storage layer facing the clothes to the outer layer facing the clothes surface (inclusive), wherein at least one of the lower two layers faces the clothing surface, and the table has a fluid angle greater than that of the adjacent layer It is adjacent to the contact angle of the fluid facing the human face. It is called 3_—a method for producing an absorbent article such as the scope of patent application No. 丨 or 2 including the step of applying a low surface energy layer material to the surface of the layer. General China National Standard (CNS) A4 specification (210X297 mm) 390807, patent application scope A8 B8 C8 D8 4 · Methods of producing absorbent articles such as the scope of patent application No. 丨 or 2 including mixing low surface energy Steps of materials in this layer. 5 'Disposable absorbent article according to item 1 or 2 of the patent application park, which is located at each side of the storage layer T; at least-layer pure table * energy material. . Disposable absorbent article according to item 5 of the scope of patent application, wherein the cough-low surface energy material is selected from the group consisting of curable poly dream oxygens, fluoropolymers: or their mixtures. The disposable absorbent article according to item 1, wherein the layer includes a low surface energy material that accounts for at least 5% of the total weight of the layer. 8. The disposable absorbent article according to item i or 2 of the scope of patent application, wherein The garment facing or mating face of the layer includes at least 0,25 grams of low surface energy material per square meter of surface. 9. Disposable absorbent article according to patent claim No.! Or 2, where the backsheet includes two layers The first layer adjacent to the core includes the polymer film and the outer layer. Please read the back note I. The side order includes a gas-permeable fiber-containing fabric layer. The Ministry of Economic Affairs Central Central Bureau Bureau Shellfisher Consumer Cooperative Printing Bag 10. According to the application. The disposable absorbent article of item, wherein the core includes at least two parts, the first part includes a storage layer and the second part includes a woven fabric-containing layer; the fiber-containing layer is adjacent to the back sheet. 11. The disposable absorbent article according to item 1 or 2 of the scope of the patent application, wherein the fluid contact angle of the layer facing the mating person is at least 10 degrees greater than the fluid contact angle of the adjacent surface. 12. The disposable absorbent article according to item n of the patent application scope, wherein the fluid contact angle is at least 20 degrees larger than the fluid contact angle of the adjacent surface. 13. Disposable absorbent article according to item 2 of the patent application park, in which the size of the neck is -2- this paper size uses the Chinese national standard (CNS} Α4 specification (210X297 mm) 390807 patent scope The fluid contact angle of the storage layer facing the garment surface is at least 90 degrees. The disposable absorbent article according to item 13 of the patent application, wherein the surface chain contact angle of the surface is at least 100 degrees. 15. Disposable absorbent article according to item 2 of the scope of the patent application. The absorbent article preferably has a continuous fluid angle gradient in the lower part. 6. Disposable absorbent article according to the scope of patent application. The article is hygienic. Eat in cotton or panties. Among them (please read the note on the back before filling out this page). · Printed by the Central Standards Bureau of the Ministry of Economic Affairs, printed only by the Consumer Cooperatives. -3- This paper size is used by China National Standards (CNS) 8 4 «Ice (210X297 Mm)