JP5171194B2 - Mattress intermediate material and mattress using the same - Google Patents

Description

  The present invention relates to a mattress intermediate material suitably used as a bed for nursing care, hospital use, and the like and a mattress using the same.

  As a bed for nursing care, hospital use, etc., a gage bed having a posture control function such as raising the back of a user or raising a foot is used. By using a gadget bed, for example, it is possible to prevent bedridden prevention and nursing care of elderly users. In addition, the user can easily sit in the hospital when eating.

  “Gudge property” is required for the intermediate material for mattress of the gudge bed. “Gudgetability” is a property in which the mattress follows the deformation of the bed when changing the posture of the user. When the posture is low, the mattress is wrinkled and sagging. Further, the mattress for the mattress bed mattress is required to have “cleanability” that can be easily cleaned from the viewpoint of hygiene.

  In order for the conventional mattress to obtain an appropriate body pressure dispersion performance, an appropriate amount of deflection is required, and thus the thickness direction in which the body weight is applied requires a dimension of 40 mm to 200 mm. However, when this thickness is used for a flat bed, there is no problem. (FIG. 1). Also, in terms of cleaning equipment, conventional mattresses are difficult to disinfect regularly and can only be used once purchased.

  As a mattress for a gadget bed, a urethane foam having a notch is known. However, since a cut is provided in the urethane foam, it becomes weak in strength and sag occurs.

In Patent Document 1, as a rug that can follow a delicate line of a gudge bed, a flexible base fabric, a plurality of elastic bodies arranged on both sides of the base fabric, and a skin cover that covers these are provided. A gap is provided between each elastic body arranged on each surface of the base fabric, and a plurality of elastic bodies on one side of the base fabric and a plurality of elastic bodies on the other surface side of the base fabric are elastic. There is disclosed a rug characterized in that an elastic body on the other side of the base fabric is positioned at a position of a gap between the elastic bodies on one side of the base fabric, shifted in the arrangement direction of the bodies.
JP 2000-316676 A

  An object of the present invention is to provide a mattress intermediate material excellent in gudgeability and cleanability and a mattress using the same.

  The intermediate material for a mattress of the present invention that has solved the above problems is a laminate in which a plurality of layers made of a three-dimensional network structure are laminated, and each layer made of the three-dimensional network structure is made of the laminate It is characterized by being fixed continuously or intermittently at both ends in the longitudinal direction of the body. That is, the intermediate material for a mattress of the present invention is formed by laminating a plurality of layers made of a three-dimensional network structure, and each layer is fixed at both ends in the longitudinal direction of the laminate. By adopting such a configuration, it is possible to prevent the occurrence of lateral displacement when controlling the posture, and the network structure is easily stretched or compressed. As a result, the occurrence of wrinkles and sagging in the mattress is suppressed, and the deformation easily follows when raising the back. Moreover, since each layer of the laminate is composed of a three-dimensional network structure, it has excellent durability and does not sag even when used over a long period of time. In addition, it has excellent cleanability, enabling "home hand washing".

  The present invention includes a mattress using the mattress intermediate material of the present invention.

  The mattress intermediate material of the present invention and the mattress using the same are excellent in gag and detergency.

  The mattress intermediate material of the present invention is a laminated body in which a plurality of layers made of a three-dimensional network structure (hereinafter may be simply referred to as “network structure layer”) are laminated. The laminated body is fixed continuously or intermittently at both ends in the longitudinal direction.

  First, the mattress intermediate material of the present invention will be described with reference to the drawings, but the mattress intermediate material of the present invention is not limited to the embodiment shown in the drawings.

  FIG. 2 is an explanatory view (perspective view) showing an example of the mattress intermediate member of the present invention. The mattress intermediate material is composed of a laminated body 5 in which a substantially rectangular parallelepiped upper layer 1 and a lower layer 3 made of a three-dimensional network structure are laminated, and each network structure layer has both end portions 7 in the longitudinal direction A of the laminated body. , 7 ', and the central portion 9, 9' in the longitudinal direction A is not fixed. Here, the edge part of a laminated body means the range within 30 cm from the edge of a laminated body. The embodiment of FIG. 2 is an embodiment made of a laminate having a two-layer structure composed of an upper layer and a lower layer, but the mattress intermediate material of the present invention may be a laminate in which a plurality of network structure layers are laminated. It is also a preferred embodiment that the laminate has a three-layer structure comprising an upper layer, a middle layer, and a lower layer.

  As the network structure layer, a three-dimensional network structure layer in which continuous filaments made of a thermoplastic resin are entangled in a three-dimensional random manner and at least a part of the entangled portion is fused is used. It is preferable. Since such a network structure layer has a sparse structure, it has high air permeability. As a result, the resulting mattress intermediate can be easily washed and dried and is hygienic. The three-dimensional random shape means that a plurality of arbitrary shapes such as loops having irregular sizes and directions are formed by twisting a plurality of continuous filaments (continuous filaments made of thermoplastic resin). It refers to a three-dimensional structure in which at least a part of the entangled portions between the filaments is fused.

  The “continuous striated body” is a continuous striated body (strand) made of a thermoplastic resin. Examples of the thermoplastic resin include various thermoplastic resins such as polyester resin, polyolefin resin, vinyl chloride resin, polyamide resin, fluororesin, and biodegradable resin. Among these, a continuous filament using a polyester resin or a polyolefin resin as a raw material is preferable, and a continuous filament using a polyester resin as a raw material is more preferable from the viewpoint of durability under heat of about 40 ° C to 70 ° C. In particular, among polyester resins, a polymer such as a copolymer polyester, a block copolymer polyether ester, or a block copolymer polyester ester is preferable because it exhibits excellent durability.

  The fineness of the continuous filament made of the thermoplastic resin is preferably 275 dtex or more, more preferably 550 dtex or more, preferably 220,000 dtex or less, and more preferably 110,000 dtex or less. This is because when the fineness of the continuous filaments is 275 dtex or more, the anti-compression strength is high, and when the fineness is 220,000 dtex or less, it is easy to deform and the elasticity is improved.

  The network structure layer is preferably a substantially rectangular parallelepiped because it is used for a mattress. For example, the longitudinal direction A is 50 cm to 300 cm, the lateral direction B is 50 cm to 200 cm, and the thickness is 10 mm to 200 mm. It is more preferable that it is a substantially rectangular parallelepiped. Further, the thickness of the network structure layer is preferably 10 mm or more, more preferably 15 mm or more, preferably 200 mm or less, and more preferably 100 mm or less. When the thickness is 10 mm or more, the physical properties of the network structure layer are improved. When the thickness is 200 mm or less, it is easy to bend and handle, and the mattress follows the folding of the bed when raising the back, especially in a bed with a back-up function. Because it can be done.

Density of the network structure layer is preferably 80 kg / ^{m 3} or less, 60 kg / ^{m 3} or less is more preferable. By setting the density of the network structure layer to 80 kg / m ³ or less, the laminate can have a sparse structure, and the air permeability of the resulting mattress intermediate material is increased. As a result, the mattress intermediate material of the present invention is hygienic because it can be easily washed and dried.

On the other hand, the lower limit of the density of the network structure layer is preferably 20 kg / ^{m 3,} and more preferably 25 kg / ^{m 3.} This is because if the density is too low, the adhesion points between the fibers forming the network structure layer are reduced, and the shape cannot be maintained or becomes brittle.

  The compressive hardness of the network structure layer is preferably 3 kg / 200 mmφ or more, more preferably 4 kg / 200 mmφ or more, preferably 40 kg / 200 mmφ or less, more preferably 35 kg / 200 mmφ or less. When the compression hardness of the network structure layer is within the above range, a laminate having a hardness suitable as an intermediate material for a mattress can be obtained.

  Specific examples of the network structure layer used in the present invention include, for example, Breath Air A4555, A3025, L4550, L2525 manufactured by Toyobo Co., Ltd.

  The mattress intermediate material of the present invention is a laminated body in which a plurality of network structure layers are laminated. As an aspect of laminating a network structure layer, for example, a network structure layer of low compression hardness is laminated on the uppermost layer. An embodiment in which a network structure layer having a high compression hardness is laminated on the lowermost layer; an embodiment in which a network structure layer having a high compression hardness is laminated on the uppermost layer and a network structure layer having a low compression hardness is laminated on the lowermost layer; Any of the embodiments in which a network structure layer having substantially the same compression hardness is laminated on the uppermost layer and the lowermost layer may be used. This is because either a hard surface or a soft surface can be selected according to the user's preference and the degree of floor slip. Moreover, the mattress which disperse | distributes body pressure substantially uniformly is obtained by balancing the hardness (compression hardness) of an upper layer and a lower layer appropriately.

As the uppermost network structure layer, for example, it is preferable to use a layer having a thickness of 10 mm to 40 mm, a density of 25 kg / m ^{3 to} 60 kg / m ³ , and a compression hardness of 4 kg / 200 mmφ to 18 kg / 200 mmφ. It is. This is because if the compression hardness is 4 kg / 200 mmφ or more, there is an anti-compression strength necessary for the mattress, and if it is 18 kg / 200φ or less, the mattress is not too hard. Further, as the lowermost network structure layer, for example, a layer having a thickness of 20 mm to 100 mm, a density of 35 kg / m ^{3 to} 60 kg / m ³ , and a compression hardness of 11 kg / 200 mmφ to 25 kg / 200 mmφ may be used. This is a preferred embodiment. This is because when the compression hardness is 11 kg / 200 mmφ or more, a sufficient holding force is obtained and the feeling of bottoming is not felt, and when it is 25 kg / 200 mmφ or less, the feeling of bottoming does not increase.

  In particular, it is preferable to provide a difference in compressive hardness between the network structure layer used for the uppermost layer and the network structure layer used for the lowermost layer. The compressive hardness indicates the hardness of the network structure layer, and either the uppermost layer or the lowermost layer may be high. This is because, as described above, either a hard surface or a soft surface can be selected according to the user's preference and the degree of floor slip. In addition, a mattress can be obtained that balances the upper and lower hardness with each other and distributes the body pressure almost uniformly.

  The difference in compression hardness is preferably 1 kg / 200 mmφ or more, more preferably 3 kg / 200 mmφ or more, further preferably 5 kg / 200 mmφ or more, preferably 20 kg / 200 mmφ or less, more preferably 18 kg / 200 mmφ or less, and 15 kg / 200 mmφ or less. Further preferred.

  Here, the “compression hardness” is a value obtained by cutting a sample into 30 cm square, using a pressure plate having a diameter of 200 mm, and compressing the sample by 25% in accordance with JIS K6400-2 (2004) 6.7 D method. Stress value.

  In the present invention, each network structure layer is fixed continuously or intermittently at both ends in the longitudinal direction of the laminate.

  The method of fixing each network structure layer is not particularly limited, but each network structure layer is fixed using physical fixing means such as sewing, a band, a nail, a bolt, a string, a clamp, a hook, and a ring. Examples thereof include a fixing method, a method of fusing each network structure layer by high-frequency welding or hot pressing, and a method of bonding each network structure layer using an adhesive. Among these, as a method of fixing each network structure layer, it is preferable to use a physical fixing means, and it is more preferable to fix each network structure layer using sewing or a band. When the physical fixing means is used, the fixed state of each network structure layer can be easily released. That is, there is an advantage that each network structure layer can be easily removed, and for example, each network structure layer can be separately washed.

  As a method of sewing and fixing each network structure layer, for example, a method of sewing using an electric sewing machine while compressing each network structure layer can be mentioned. The sewing thread is not particularly limited, and for example, a polyester-based high-strength sewing thread can be used. Further, the band for fixing each network structure layer is not particularly limited, and a rubber band, a polypropylene band (PP band), or the like can be used.

  As a welder processing method, the method disclosed in Japanese Patent Publication No. 7-41105 can be used. In addition, as a hot press processing method, by attaching a network structure between hot press plates arranged in parallel vertically, pressure welding at a temperature lower by 10 ° C. or more than the melting point of a thermoplastic resin as a raw material of the network structure The network structure of each layer can be fixed integrally.

  As an adhesive for adhering each network structure layer, for example, an adhesive such as polyester resin, polyolefin resin, epoxy resin, urethane resin, ester, polybutadiene, butadiene / acrylonitrile, isoprene, chloroprene is preferably used. It is. In addition, examples of the form of the adhesive include solvent-based, aqueous-based, and hot-melt-based adhesives.

  When each network structure layer is fixed with an adhesive, each network structure layer is formed by tangling continuous filaments in a three-dimensional random manner, as described above, so that each network structure layer at the end is The contact area becomes smaller. Therefore, by adhering each network structure layer through the fabric as described above, the contact area between each network structure layer at the end is increased, and the peel strength between the layers is increased. Examples of the mode in which each network structure layer is bonded through the fabric include, for example, a mode in which an adhesive is applied to both sides of the fabric to bond each network structure layer; or the fabric is impregnated with the adhesive and bonded. An embodiment in which a sheet is formed and each network structure layer is bonded can be exemplified.

  The material of the fabric is not particularly limited as long as it can adhere the network structure layer. For example, the fabric is an organic resin such as a polyester resin or a polyolefin resin, or a natural or organic resin. A blended fabric of natural and natural materials can be used. Moreover, it is also possible to use the same kind of material constituting the fabric and the network structure layer. For example, the material constituting the network structure layer and the fabric may be a polyester resin or a polyolefin resin. It can be.

  Moreover, it is also possible to use the same kind as the material which comprises the said fabric, the material which comprises a network structure layer, and the material of an adhesive agent, For example, it is set as a polyester resin or a polyolefin resin. it can.

  FIGS. 3 to 9 are plan explanatory views showing a mode of fixing each network structure layer according to the present invention (the network structure layer above the fixing portion is not shown), but fixing each network structure layer. The embodiment is not limited to the embodiment shown in the drawings.

  As an aspect of continuously fixing each network structure layer, there is an aspect in which fixing portions for fixing each network structure layer at both ends in the longitudinal direction of the laminate are provided over the entire length of both ends. For example, as shown in FIG. 3, a mode in which linear fixing portions 11 and 11 ′ are provided at both end portions 7 and 7 ′ in the longitudinal direction A of the laminate to fix each network structure layer; or As shown in FIG. 4, there may be mentioned an embodiment in which strip-like fixing portions 13 and 13 ′ are provided at both end portions 7 and 7 ′ in the longitudinal direction A of the laminated body to fix each network structure layer. In addition, as shown in FIG. 5, as shown in FIG. 5, a mode in which high-density dotted line fixing portions 15 and 15 ′ are provided at both end portions 7 and 7 ′ in the longitudinal direction A of the laminate (dotted line) Shaped fixing part).

  On the other hand, as an aspect of intermittently fixing each network structure layer, for example, a fixing portion for fixing each network structure layer at both ends in the longitudinal direction of the laminate is provided only in a part of the entire length of both ends. For example, as shown in FIG. 6, both ends 7 and 7 ′ in the longitudinal direction A of the laminate and the fixing portion 17 at the center in the lateral direction B, as shown in FIG. 6. 17 'is provided to fix each network structure layer; as shown in FIG. 7, both ends 7 and 7' in the longitudinal direction A of the laminate and fixing portions at both ends in the lateral direction B 19 and 19 ′ to fix each network layer; or as shown in FIG. 8, both ends 7 and 7 ′ of the laminate in the longitudinal direction A and both ends of the short direction B The aspect which provides the fixing | fixed part 21 and 21 'in each location from a center part to a center part, and fixes each network structure layer is mentioned. It can be.

When each network structure layer is fixed intermittently, the number and size (length) of the fixed parts, the distance between the fixed parts, whether the length of the fixed parts is uniform, etc. It can change suitably according to etc. When the fixing portion is provided at both ends in the longitudinal direction A of the laminate and at the center in the short direction B (for example, FIG. 6), the length (Z ₁ ) of the fixing portion is the end length in the longitudinal direction A. 10% or more, more preferably 20% or more, preferably 100% or less, more preferably 90% or less; fixed to both ends in the longitudinal direction A and both ends in the short direction B of the laminate. When providing a part (for example, FIG. 7), the length (Z ₂ ) of the fixed part is preferably 5% or more of the end part length in the longitudinal direction A, more preferably 10% or more, and preferably 50% or less, 45 % Is more preferable; in the case where fixing portions are provided at both ends in the longitudinal direction A of the laminate and from both ends in the lateral direction B to the central portion (for example, FIG. 8), length _{(Z 3)} 4% or more are preferred edge length in the longitudinal direction a, 10% or more Is more preferable, 15% or more is more preferable, 33% or less is preferable, 25% or less is more preferable, 20% or less is more preferable, and the number of fixing portions at one end is preferably 3 or more, and more preferably 5 or more. More preferably, 20 or less is preferable, and 15 or less is more preferable.

  Moreover, the fixing direction of the fixing part for fixing each network structure layer can be appropriately changed according to the fixing means. For example, as shown in FIG. 9, a mode in which each network structure layer is fixed by fixing the fixing portions 23 and 23 ′ at both end portions 7 and 7 ′ in the longitudinal direction A of the laminate in parallel with the long side is also possible. This is a preferred embodiment.

When providing the fixing portion, the distance (X) between the fixing portion and the end portion in the longitudinal direction of the laminate is not particularly limited, but is preferably 5 cm or more, more preferably 10 cm or more, preferably 30 cm or less, and 20 cm or less. Is more preferable. When the distance is 5 cm or more, the thickness of the end of the mattress can be maintained and the appearance is improved, and when the distance is 30 cm or less, the human head and the back do not get on the dent of the processed portion, and the sleeping comfort is improved. This is because there is no sense of incongruity. The width (Y ₁ ) of the linear fixing portion is not particularly limited, but is preferably 2 mm or more, more preferably 3 mm or more, preferably 30 mm or less, and more preferably 10 mm or less. The width (Y ₂ ) of the band-shaped fixing part is not particularly limited, but is preferably more than 3 cm, more preferably 5 cm or more, preferably 50 cm or less, and more preferably 25 cm or less. This is because if the width of the fixing portion is too small, the peel strength becomes weak, and if it is too large, the gudge property becomes worse.

  In the present invention, as a preferable aspect of fixing each network structure layer continuously or intermittently, for example, at each end in the longitudinal direction of the laminate, each network structure layer is fixed by sewing or a band. A mode in which each network structure layer is fused and fixed at a fixed portion by high-frequency welding or hot pressing at both ends in the longitudinal direction of the laminate; at both ends in the longitudinal direction of the laminate. A mode in which an adhesive is applied between each network structure layer over the region of the fixing portion, and each network structure layer is fixed by bonding with an adhesive; or a fabric is provided between each network structure layer, An embodiment in which each network structure layer is fixed by bonding with an adhesive via a fabric can be exemplified.

  When each network structure layer is fixed using sewing, the number of fixing portions is not particularly limited, but is preferably at least one or more, more preferably two or more, and more preferably three or more at one end portion. When each network structure layer is fixed using a band, the length to be fixed is not particularly limited, but is preferably 20 mm or more, more preferably 30 mm or more, preferably 300 mm or less, and more preferably 60 mm or less. This is because if the fixing length is too short, it cannot be fixed sufficiently, and if it is too long, the work is troublesome and fixing becomes difficult.

  In the present invention, the peel strength between the uppermost network structure layer and the subsequent network structure layer fixed thereto is preferably 5 kg or more, more preferably 10 kg or more, and preferably 15 kg or more. This is because when the peel strength is 5 kg or more, the peel strength is high, peeling does not occur or each layer does not shift, and a sense of incongruity does not occur during use. In addition, when the intermediate material for mattresses of the present invention is composed of three or more network structure layers, in addition to the interface between the uppermost layer and the next layer fixed thereto, an additional interface can be formed. It is also a desirable aspect that the peel strength in is 5 kg or more, more preferably 10 kg or more, and still more preferably 15 kg or more. Here, “peel strength” refers to a tensile force measured by cutting a sample into a size of 250 mm × 300 mm, adhering at an end of 300 mm, and pulling the adhered sample at a speed of 10 mm / min with an Amsler tester. Is the highest value.

  The intermediate material for mattress of the present invention has a repetitive compressive residual strain of 80,000 times at 25 ° C., preferably 7% or less, more preferably 5% or less, and further preferably 3% or less. Further, the 50% compression residual strain under the heat of 70 ° C. is preferably 25% or less, more preferably 20% or less, and further preferably 17% or less.

  In the present invention, the thickness of the laminate is preferably 5 cm or more, more preferably 6 cm or more, preferably 20 cm or less, and more preferably 15 cm or less. This is because when the thickness of the laminate is 5 cm or more, it becomes difficult to have a bottom, poor sleeping comfort, and poor body pressure dispersion, and when the thickness is 20 cm or less, the gag property at the time of raising the back is improved.

  The present invention includes a mattress using the mattress intermediate material of the present invention.

  The mattress of the present invention is not particularly limited as long as the inner material for mattress of the present invention is covered with a side land. For example, it is also a preferable aspect to wrap the inner material for mattress of the present invention with an inner. . This is because the inner material for the mattress is wrapped with the inner material so that the inner material and the side fabric are easily slipped, and the gage property is improved.

  When wrapping the mattress intermediate material of the present invention with an inner, it is also a preferred aspect that the inner and the mattress intermediate material are fixed at both longitudinal ends of the mattress intermediate material. As a method for fixing the inner and the mattress intermediate material, for example, each network structure is fixed in advance to obtain a laminate, and the laminate and the inner material for the mattress are wrapped with the inner laminate. A method of fixing, or a method of wrapping each network structure layer that is not fixed with an inner and then fixing the inner and each network structure integrally is exemplified.

  FIG. 10 is a mattress in which the mattress intermediate material of the present invention is wrapped with a side land, and one cross section of both end portions (fixed portions) of the mattress obtained by fixing each network structure layer by, for example, sewing It is an expansion explanatory view which illustrates typically a structure, and the crevice has arisen by sewing on the surface of the inside material for mattresses. FIG. 11 shows an embodiment in which the inner material for the mattress is wrapped with the inner, and the inner and each network structure layer are integrally fixed by sewing, and the surface of the inner material for the mattress and the inner has a concave portion by sewing. Has occurred.

  Examples of the side fabric include leather (synthetic leather, natural leather), woven and knitted fabric, non-woven fabric, and three-dimensional knitted fabric using double raschel. The inner for wrapping the mattress inner material of the present invention is not particularly limited as long as it is made of a fiber having a low coefficient of friction for improving the sliding property, and examples thereof include polyester taffeta, polyester net, and the like. Can do.

  Hereinafter, the present invention will be described in detail by way of examples. However, the present invention is not limited to the following examples, and all modifications and embodiments without departing from the gist of the present invention are not limited thereto. Included in range.

[Evaluation method]
(1) Gagging mattress sample when mattress sample of 91cm x 193cm (including side land) is laid on National Electric Care Bed Soi-ne with gag measuring function and head part of electric bed is raised to 70 ° Judgment of the sample is made visually to make the mattress gag.
Evaluation criteria 1
○: The mattress follows the deformation of the bent part of the bed, and there is no sense of incongruity.
Δ: A gap is formed between the mattress and the bed at the bent part of the bed.
X: A large gap is generated between the mattress and the bed at the bent portion of the bed. Alternatively, creases occur on the mattress.
Evaluation criteria 2
In addition, when the sample after the gag test is returned to the original state, if there is no displacement of each layer, it is evaluated as “◯”, and if there is a displacement and a feeling of uncomfortable sleep, it is evaluated as “X”.

(2) Repetitive compressive residual strain at 80,000 times at 25 ° C. A sample was cut into a size of 30 cm × 30 cm, and a servo pulser manufactured by Shimadzu Corporation in accordance with JIS K6400-4 (2004) 6.2 B method. , At 25 ° C. and 65% RH, compression recovery was repeated at a cycle of 1 Hz up to a thickness of 50% of the initial thickness. After 80,000 samples were left for 1 day, the thickness (b) was obtained and the thickness before treatment From (a), the compression residual strain is calculated by the following equation by repeating 80,000 times at 25 ° C.
80,000 times repeated compression residual strain at 25 ° C. = {(Ab) / a} × 100: unit%

(3) Compression residual strain at 70 ° C. The sample was cut into a size of 15 cm × 15 cm, and the sample was 50% of the initial thickness in accordance with JIS K6400-4 (2004) 4.5.2 A method. After being allowed to stand in a dry heat at 70 ° C. for 22 hours in the compressed state, the thickness (d) after leaving for 1 day is obtained by cooling and removing the compression strain. From the thickness (c) before treatment, the compression residual at 70 ° C. The strain is calculated by the following formula.
Compression residual strain at 70 ° C. = {(Cd) / c} × 100: unit%

(4) Compressive hardness A sample is cut into a 30 cm square, and a stress value is measured when the sample is compressed by 25% in accordance with JIS K6400-2 (2004) 6.7 D method using a pressure plate with a diameter of 200 mm. And the compression hardness.

(5) Peel strength The sample was cut into a size of 250 mm × 300 mm, fixed at the end of 300 mm, and the fixed sample (shown in FIGS. 12 and 13) was pulled at a rate of 10 mm / min with an Amsler tester, The tensile force is measured and the maximum value is taken as the peel strength.

[Three-dimensional network structure layer]
The following three-dimensional network structure was used as the network structure layer.

Polyester network structure layer 1
Breath Air A3025 manufactured by Toyobo Co., Ltd.
Thermoplastic resin: polyester resin, filament shape: round cross section, fineness = 11000 dtex, size = 91 cm × 193 cm, thickness = 25 mm, density = 30 kg / m ³ , compression hardness = 4.2 kg / 200 mmφ, at 25 ° C. 80,000 repeated compression residual strain = 2.8%, compression residual strain at 70 ° C = 15.2%

Polyester network layer 2
Breath Air A4555 manufactured by Toyobo Co., Ltd.
Thermoplastic resin: polyester resin, filament shape: hollow, fineness = 6500 dtex, size = 91 cm × 193 cm, thickness = 55 mm, density = 45 kg / m ³ , compression hardness = 23.5 kg / 200 mmφ, at 25 ° C. 80,000 times repeated compression residual strain = 3.7%, compression residual strain at 70 ° C. = 14.8%

Polyolefin network layer 1
Breath Air L 2525 manufactured by Toyobo Co., Ltd.
Thermoplastic resin: polyolefin resin, filament shape: round cross section, fineness = 1500 dtex, size = 91 cm × 193 cm, thickness = 25 mm, density = 25 kg / m ³ , compression hardness = 3.2 kg / 200 mmφ, at 25 ° C. 80,000 repetitions of compression residual strain = 3.5%, compression residual strain at 70 ° C. = 38.0%

Polyolefin network layer 2
Breath Air L 4550 manufactured by Toyobo Co., Ltd.
Thermoplastic resin: polyolefin resin, filament shape: hollow, fineness = 6000 dtex, size = 91 cm × 193 cm, thickness = 50 mm, density = 45 kg / m ³ , compression hardness = 22.0 kg / 200 mmφ, at 25 ° C. Repetitive compressive residual strain of 80,000 times = 6.5%, compressive residual strain at 70 ° C. = 35.5%

[Manufacture of mattresses and mattresses]
Mattress intermediate 1 and mattress 1
As the network structure layer, the polyester network structure layer 1 was laminated as an upper layer, and the polyester network structure layer 2 was laminated as a lower layer. At that time, an air pressure of 5 kg was applied using an ultrasonic welder machine manufactured by Seidensha Electronics Co., Ltd. over the entire length (shown in FIG. 3) of each 10 cm from both ends in the longitudinal direction A of the laminate. Applied for 6 seconds (voltage 200V, current 4kVA, frequency 15kHz), cooled for 5 seconds at room temperature, and continuously fixed by fusing upper and lower layers with 5mm fusion width, both ends in short direction B The intermediate material 1 for mattress was produced without fixing. Moreover, the mattress 1 was produced using the inner material 1 for mattresses, and the fusion | fusion (AKE69440) by Asahi Kasei company as a side place. Table 1 shows the results of measuring the peel strength of the mattress intermediate material 1 and the gadness of the mattress 1.

Mattress intermediate 2 and mattress 2
As the network structure layer, the polyester network structure layer 1 was laminated as an upper layer, and the polyester network structure layer 2 was laminated as a lower layer. At that time, in the center part (the length to be fused: 30 cm, shown in FIG. 6) at 10 cm from both ends in the longitudinal direction A of the laminate and in the short direction B (see FIG. 6) Applying 5kg air pressure for 6 seconds (voltage 200V, current 4kVA, frequency 15kHz) using an ultrasonic welding machine manufactured by Co., Ltd., cooling at room temperature for 5 seconds, and fusing the upper and lower layers with a 5mm fusion width In this way, the mattress intermediate member 2 was produced without fixing both ends in the short direction B. Moreover, the mattress 2 was produced using the intermediate material 2 for mattresses, and the honeycomb knit (MD-NR-9155) by KB Seiren as a side fabric. Table 1 shows the results of measuring the peel strength of the mattress intermediate member 2, the gagability of the mattress 2, and the like.

Mattress intermediate 3 and mattress 3
As the network structure layer, the polyester network structure layer 1 was laminated as an upper layer, and the polyester network structure layer 2 was laminated as a lower layer. At that time, the upper layer and the lower layer are hand-sewn at 10 cm from both ends in the longitudinal direction A of the laminate and at both ends in the short direction B (sewing length: 5 cm, shown in FIG. 7). The mattress intermediate material 3 was produced without fixing both ends in the short direction B by fixing by sewing. Moreover, the mattress 3 was produced using the intermediate material 3 for mattresses, and the fusion | fusion (AKE69440) by Asahi Kasei company as a side place. Table 1 shows the results of measuring the peel strength of the mattress intermediate 3 and the gadness of the mattress 3.

Mattress intermediate 4 and mattress 4
As the network structure layer, the polyester network structure layer 1 was laminated as an upper layer, and the polyester network structure layer 2 was laminated as a lower layer. At that time, the upper layer and the lower layer are placed at 6 locations (fixed length: 5 cm) from both ends in the short direction B to the center portion at 10 cm from both ends in the longitudinal direction A of the laminate. The mattress intermediate material 4 was produced by fixing using PP bands and not fixing both ends in the short direction B. Moreover, the mattress 4 was produced using the inner material 4 for mattresses, and the fusion | fusion (AKE69440) by Asahi Kasei company as a side place. Table 1 shows the results of measuring the peel strength of the mattress intermediate material 4 and the gadness of the mattress 4.

Mattress inner material 5 and mattress 5
As the network structure layer, the polyester network structure layer 1 was laminated as an upper layer, and the polyester network structure layer 2 was laminated as a lower layer. At that time, a commercially available chloroprene-based adhesive is applied with a bonding width of 5 cm over the entire length (shown in FIG. 4) of each 10 cm portion from both ends in the longitudinal direction A of the laminate, and the upper layer and the lower layer are bonded. The mattress intermediate material 5 was produced without fixing both ends in the short direction B. Moreover, the mattress 5 was produced using the inner material 5 for mattresses, and the fusion | fusion (AKE69440) by Asahi Kasei company as a side place. Table 1 shows the results of measurement of the peel strength of the mattress intermediate material 5 and the gadness of the mattress 5.

Mattress inner material 6 and mattress 6
As the network structure layer, the polyester network structure layer 1 is laminated on the upper and lower sides of the polyester network structure layer 2, and at that time, the positions are 10 cm from the both ends in the longitudinal direction A of the laminate. In 12 places (fixed length: 5 cm) from both ends in the direction B to the center, the three layers are fixed by using the PP band, and the both ends in the short direction B are not fixed, A mattress intermediate 6 was produced. Moreover, the mattress 6 was produced using Asahi Kasei Co., Ltd. fusion (AKE69440) as the mattress intermediate 6 and the side material. Table 1 shows the results of measurement of the peel strength of the mattress intermediate member 6, the gagability of the mattress 6, and the like.

Mattress inner material 7 and mattress 7
The mattress intermediate material 3 was placed in an inner made of a thin knitted fabric (made of 100% polyester filament) to produce a mattress intermediate material 7. Moreover, the mattress 7 was produced using the mattress intermediate 7 and Asahi Kasei Fusion (AKE69440) as the side land. Table 1 shows the results of measurement of the peel strength of the mattress intermediate member 7 and the gagability of the mattress 7.

Mattress inner material 8 and mattress 8
As the network structure layer, the polyester network structure layer 1 is laminated as the upper layer and the polyester network structure layer 2 is laminated as the lower layer, and the laminated network structure layer is formed into a thin mesh fabric (polyester filament) without fixing treatment. 100% made) inner. At this time, the ultrasonic wave manufactured by Seidensha Electronics Industry Co., Ltd. at a location 10 cm from each end of the laminate in the longitudinal direction A and at the center in the short direction B (length to be fused: 30 cm). Using a welder processing machine, 5 kg of air pressure was applied for 6 seconds (voltage 200 V, current 4 kVA, frequency 15 kHz), cooled at room temperature for 5 seconds, and the inner layer and the upper and lower layers of the net-like structure were melted with a fusion width of 5 mm. The mattress intermediate material 8 was produced without fixing both ends in the short direction B. Moreover, the mattress 8 was produced by using the mattress intermediate material 8 and Asahi Kasei Fusion (AKE69440) as the side land. Table 1 shows the results of measuring the peel strength of the mattress intermediate member 8, the gagability of the mattress 8, and the like.

Mattress inner material 9 and mattress 9
A polypropylene Hessian cloth having a width of 5 cm and a length of 91 cm was impregnated with an epoxy adhesive to obtain an adhesive sheet. As the network structure layer, a polyolefin network structure layer 1 was laminated as an upper layer, and a polyolefin network structure layer 2 was laminated as a lower layer. In that case, the said adhesive sheet is mounted over the full length (as shown in FIG. 4) of the location of 15 cm from the both ends of the longitudinal direction A of a laminated body, and an upper layer and a lower layer are adhere | attached via a fabric (adhesive sheet). The mattress intermediate material 9 was prepared without fixing both ends in the short direction B. Moreover, the mattress 9 was produced by using the mattress intermediate 9 and Asahi Kasei's fusion (AKE69440) as the side land. Table 1 shows the results of measuring the peel strength of the mattress intermediate 9, the gagability of the mattress 9, and the like.

Mattress 10 for mattress and mattress 10
As the network structure layer, the polyester network structure layer 1 was laminated as an upper layer, and the polyester network structure layer 2 was laminated as a lower layer. The laminated material 10 was used as a mattress intermediate material 10 without fixing. Moreover, the mattress 10 was produced using the intermediate material 10 for mattresses, and the fusion | fusion (AKE69440) by Asahi Kasei company as a side place. Table 1 shows the results of measuring the peel strength of the mattress intermediate material 10, the gagability of the mattress 10, and the like.

Mattress intermediate material 11 and mattress 11
A mattress intermediate member 11 and a mattress 11 were obtained in the same manner as the mattress intermediate member 5 except that the entire surfaces of the laminated layers were adhered. Table 1 shows the measurement results of the peel strength of the mattress intermediate member 11 and the gadness of the mattress 11.

  The present invention can be suitably applied to a mattress for a gudge bed that is excellent in gag and cleanability.

It is explanatory drawing of the aspect used for the gage bed of the conventional mattress. It is explanatory drawing of an example of the intermediate material for mattresses of this invention. It is plane explanatory drawing which illustrates the aspect which fixes a network-structure body layer continuously. It is plane explanatory drawing which illustrates the aspect which fixes a network-structure body layer continuously. It is plane explanatory drawing which illustrates the aspect which fixes a network-structure body layer continuously. It is plane explanatory drawing which illustrates the aspect which fixes a network-structure body layer intermittently. It is plane explanatory drawing which illustrates the aspect which fixes a network-structure body layer intermittently. It is plane explanatory drawing which illustrates the aspect which fixes a network-structure body layer intermittently. It is a plane explanatory view of the modification of the mode which fixes a network structure layer. It is an expansion explanatory view which illustrates typically the section structure of the mattress of the present invention. It is an expansion explanatory view which illustrates typically the section structure of the mattress of the present invention. It is explanatory drawing of the evaluation sample for measuring the peeling strength between each network structure body layer. It is explanatory drawing of the evaluation sample for measuring the peeling strength between each network structure body layer.

Explanation of symbols

1: upper layer (network structure layer), 3: lower layer (network structure layer), 5: laminate, 7, 7 ′: end of longitudinal direction A of laminate, 9, 9 ′: longitudinal direction of laminate A, 11, 11 ′: fixed part (linear fixed part), 13, 13 ′: fixed part (band-shaped fixed part), 15, 15 ′: fixed part (dotted line fixed part), 17, 17 ′ : Fixing part (fixing part in the central part in the short direction B), 19, 19 ': Fixing part (fixing part in both ends in the short direction B), 21, 21': Fixing part (fixing in each part in the short direction B) Part), 23, 23 ': fixing part, 25: intermediate material for mattress, 27: side ground, 29: inner, 31: fixing part (linear fixing part, for peel strength evaluation), 33: fixing part (band-like fixing) Part, for peel strength evaluation)

Claims (10)

It is a laminate in which a plurality of layers made of a three-dimensional network structure are laminated, and the layer made of the three-dimensional network structure is formed by confounding continuous filaments made of a thermoplastic resin in a three-dimensional random manner, At least a part of the entangled portion is fused, and each layer made of the three-dimensional network structure is fixed continuously or intermittently only at both ends in the longitudinal direction of the laminate. And
The fixing portion is more than 5cm from the end of the laminate longitudinal, it provided the range 30 cm, and the length direction of the stationary part, characterized in vertical der Rukoto the laminate longitudinally mattress Middle wood for use.   The mattress intermediate material according to claim 1, wherein each layer made of the three-dimensional network structure is fixed by sewing or a band.   The mattress for mattress according to claim 1 or 2, wherein the peel strength between the uppermost layer composed of the three-dimensional network structure and the next layer composed of the three-dimensional network structure fixed thereto is 5 kg or more. Wood.   The difference in compressive hardness between the layer composed of the uppermost three-dimensional network structure and the layer composed of the lowermost three-dimensional network structure is 1 kg / 200 mmφ to 20 kg / 200 mmφ. Middle material for mattress as described.   The layer composed of the three-dimensional network structure is obtained by entangled a continuous linear body composed of a thermoplastic resin having a fineness of 275 dtex to 220,000 dtex in a three-dimensional random manner, and at least a part of the entangled portion is fused. The intermediate material for mattresses according to any one of claims 1 to 4, wherein the intermediate material is for mattresses.   The thickness of the said laminated body is 5 cm-20 cm, The intermediate material for mattresses as described in any one of Claims 1-5.   A mattress using the mattress intermediate material according to any one of claims 1 to 6.   The mattress according to claim 7, wherein the mattress intermediate material is wrapped with an inner.   The mattress according to claim 8, wherein the mattress intermediate member and the inner are fixed continuously or intermittently at both ends in the longitudinal direction of the mattress intermediate member.   The mattress according to claim 8 or 9, wherein the inner is a polyester net.

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