JP5260891B2 - Mattress intermediate material and mattress using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner material for a mattress which has excellent following property, and to provide a mattress using the inner material. <P>SOLUTION: The inner material for the mattress is a lamination body where a plurality of layers constituted of a 3D net shape structural body are laminated. The respective net shape structural body layers are continuously or intermittently fixed at one end of the lamination body and are not fixed at the other end. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

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.

  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 gudge properties 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 One end of the body is fixed continuously or intermittently, and the other end is not fixed. That is, the mattress intermediate material of the present invention is a laminate of a plurality of layers made of a three-dimensional network structure, and each layer is fixed at one end of the laminate, and the other end is not fixed. When controlling the posture, a shift occurs between the layers. As a result, the occurrence of wrinkles and sagging in the mattress is suppressed. In addition, since each layer is composed of a three-dimensional network structure, it has excellent durability and does not sag even when used for a long time.
The present invention includes a mattress using the mattress intermediate material of the present invention.

  The intermediate material for mattresses of the present invention is excellent in gag characteristics.

  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 one end of the laminate is fixed continuously or intermittently, and the other end is not fixed.

  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. 1 is an explanatory view (perspective view) showing an example of a mattress intermediate material of the present invention. The mattress intermediate material is composed of a laminated body 5 in which an upper layer 1 and a lower layer 3 each having a substantially rectangular parallelepiped shape made of a three-dimensional network structure are laminated, and each network structure layer has one short side end portion 7 of the laminated body. The other short side end portion 7 ′ and the long side end portions 9 and 9 ′ are not fixed. The embodiment of FIG. 1 is an embodiment composed of a laminate having a two-layer structure consisting 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, polymers such as copolymer polyesters, block copolymer polyether esters, and polyester esters are preferable because they exhibit 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. When the fineness of the continuous filament is less than 275 dtex, the compressive strength is low, and when the fineness exceeds 220,000 dtex, it is difficult to deform and the elasticity is deteriorated.

  The network structure layer is preferably a substantially rectangular parallelepiped because it is used for a mattress. For example, the network structure layer is approximately 50 cm to 300 cm in the longitudinal direction, 50 cm to 200 cm in the lateral direction, and approximately 10 mm to 200 mm in thickness. A rectangular parallelepiped is more preferable. 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. If the thickness is less than 10 mm, the physical properties of the network structure layer are significantly reduced, and if it exceeds 200 mm, it becomes difficult to bend and handle, especially in a bed with a back-up function, the mattress is bent when the back is raised. It is because it may not follow.

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 Breath Air A3030, A4530, A4550, and A4580 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. If the compression hardness is less than 4 kg / 200 mmφ, the anti-compression strength necessary for the mattress is insufficient, and if it exceeds 18 kg / 200 mmφ, the mattress becomes 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. When the compression hardness is less than 11 kg / 200 mmφ, a sufficient holding force cannot be obtained, and a feeling of bottoming is felt, and when it exceeds 25 kg / 200 mmφ, the feeling of bottoming tends to 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 30 kg / 200 mmφ or less, more preferably 25 kg / 200 mmφ or less, more preferably 20 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 one end of the laminate. As a method for continuously fixing, for example, as shown in FIG. 2, each network structure layer is fixed to a fixed portion (fused portion) 11 at one end portion 7 of the laminate by high-frequency welding or heat pressing. In an aspect of fusing and fixing in FIG. 3, as shown in FIG. 3, an adhesive is applied between each network structure layer over the region of the fixing portion (adhesive portion) 13 at one end portion 7 of the laminate, A mode in which each network structure layer is fixed by bonding with an adhesive; or, at one end of the laminate, a fabric is provided between each network structure layer over the region of the fixing section (adhesion section) 13; 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 fused and fixed by high-frequency welding or hot pressing, as shown in FIG. 2, it is preferable to provide the fused portion in a linear shape (including a dotted line shape).

The distance (X) between the linear fused portion and one short side end 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 more preferably 20 cm or less. . If the distance is less than 5 cm, the thickness of the end of the mattress cannot be maintained, and the appearance is poor. Because it occurs. The width (Y ₁ ) of the linear fused 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. If the width of the fused part is less than 2 mm, the peel strength may be weakened, and if it exceeds 30 mm, the gudge property tends to be deteriorated, and processing becomes difficult due to the ability of the welder processing machine.

  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.

When each network structure layer is fixed with an adhesive, the width (Y ₂ ) of the bonded portion is not particularly limited, but is preferably 2 cm or more, more preferably 5 cm or more, preferably 50 cm or less, and more preferably 25 cm or less. If the width of the bonded portion is less than 2 cm, the peel strength may be weakened, and if it exceeds 50 cm, the gudge property tends to deteriorate. Moreover, it is preferable to provide an adhesion part from the edge part of a laminated body.

  As described above, each network structure layer is formed by tangling continuous filaments in a three-dimensional random manner, so that the contact area between each network structure layer at the end is small. 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. As a mode of bonding each network structure layer through the fabric, for example, an mode in which an adhesive is applied to both sides of the fabric to bond each network structure layer, or a fabric is impregnated with an 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.

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

  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.

  In the present invention, as a method for intermittently fixing each network structure layer, for example, as shown in FIGS. 4 and 5, each network structure layer is attached to a high-frequency welder at one end 7 of the laminate. A mode in which the fixing portion (fusion portion) 15 or 17 is fused and fixed by processing or heat pressing; as shown in FIG. 6, at one end portion 7 of the laminate, the fixing portion (bonding portion) 19 A mode in which an adhesive is applied between regions of each network structure over a region, 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 can be exemplified. In addition, for example, a mode in which each network structure layer is fixed using fixing means such as a nail, a bolt, a string, a clamp, a hook, and a ring can be cited. As shown in FIG. 7, one short side end of the laminate and the bed 23 may be integrally fixed using a fixing means 21 such as a nail or a bolt.

When each network structure layer is fused and fixed by high-frequency welding or hot pressing, it is preferable to provide a fused portion in a linear shape (including a dotted line shape) as shown in FIGS. . In the aspect shown in FIG. 4, the linear fusion part is provided only at the center part of one short side end part of the laminate, and in the aspect shown in FIG. 5, the linear fusion part is laminated. It is provided only at both ends of one short side end of the body. The distance (X) between the linear fused portion and one short side end of the laminate is not particularly limited, but is preferably 3 cm or more, more preferably 5 cm or more, preferably 30 cm or less, and more preferably 20 cm or less. . This is because when the distance is less than 3 cm, the appearance deteriorates, and when it exceeds 30 cm, the sleeping comfort is uncomfortable. The width (Y ₁ ) of the fused part 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 20 mm or less. If the width of the fused portion is less than 2 mm, the peel strength may be weakened, and if it exceeds 30 mm, the gudge property tends to be deteriorated, which makes it difficult to process due to the capability of the welder processing machine.

When each network structure layer is bonded and fixed with an adhesive, the width (Y ₂ ) of the bonded portion is not particularly limited, but is preferably 2 cm or more, more preferably 5 cm or more, preferably 50 cm or less, and 25 cm or less. More preferred. If the width of the bonded portion is less than 2 cm, the peel strength may be weakened, and if it exceeds 50 cm, the gudge property tends to deteriorate. Moreover, it is preferable to provide an adhesion part from the edge part of a laminated body.

  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. If the peel strength is less than 5 kg, the peel strength becomes insufficient, and peeling or each layer is displaced, resulting in a feeling of strangeness 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” is measured by cutting a sample into a size of 250 mm × 300 mm, adhering or fusing at the end of 300 mm, and pulling the fixed sample with an Amsler tester at a speed of 10 mm / min. The maximum pulling force.

  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 if the thickness of the laminate is less than 5 cm, bottoming is likely to occur, resulting in poor sleeping comfort and poor body pressure dispersion, and if it exceeds 20 cm, the gagability when raising the back may be deteriorated.

  Further, 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 mattress intermediate material of the present invention is covered with a side ground. 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.

  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 a 91cm x 195cm mattress sample (including side land) is laid on a national electric care bed Soi-ne with gag measuring function and the head of the 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. In a room at 25 ° C. and 65 RH, compression recovery was repeated at a cycle of 1 Hz to a thickness of 50% of the initial thickness, and the sample after 80,000 times was left for 1 day. From the following equation, the residual compressive strain at 80,000 times at 25 ° C. is calculated by
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, bonded or fused at the end of 300 mm, and the fixed sample (shown in FIG. 8 and FIG. 9) was fixed at a speed of 10 mm / min with an Amsler tester Pull and measure the tensile force, and take the maximum value 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 A4550 manufactured by Toyobo Co., Ltd.
Thermoplastic resin: polyester resin, filament shape: hollow cross section, fineness = 6500 dtex, size = 91 cm × 195 cm, thickness = 50 mm, density = 45 kg / m ³ , compression hardness = 23.5 kg / 200 mmφ, at 25 ° C. 80,000 repetitions of compression residual strain = 3.5%, compression residual strain at 70 ° C = 15.6%

Polyester network layer 2
Toyobo Co., Ltd. Breath Air A3030
Thermoplastic resin: polyester resin, filament shape: round solid, fineness = 1600 dtex, size = 91 cm × 195 cm, thickness = 30 mm, density = 45 kg / m ³ , compression hardness = 4.7 kg / 200 mmφ, 25 ° C. Repetitive residual strain at 80,000 times at 2.6 = 2.6%, compressive residual strain at 70 ° C. = 16.0%

Polyolefin network layer 1
Thermoplastic resin: density = 923 kg / m ³ (0.923 g / cm ³ ), melt index (MI) = 160 linear low density polyethylene resin (LLDPE) at 160 ° C., filament shape: hollow section, Fineness = 7000 dtex, size = 95 cm × 200 cm, thickness = 50 mm, density = 45 kg / m ³ , compression hardness = 25.0 kg / 200 mmφ, 80,000 repeated compression residual strain at 25 ° C. = 3.2%, 70 Compressive residual strain at 3 ° C = 35.0%

Polyolefin network layer 2
Thermoplastic resin: density = 923 kg / m ³ (0.923 g / cm ³ ), 160 ° C. melt index (MI) = 20 linear low density polyethylene resin (LLDPE), striatum shape: solid section Fineness = 1500 dtex, size = 95 cm × 200 cm, thickness = 30 mm, density = 35 kg / m ³ , compression hardness = 7.5 kg / 200 mmφ, 80,000 repeated compression residual strain at 25 ° C. = 6.2%, Compression residual strain at 70 ° C. = 39.4%

[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, 5 kg of air using an ultrasonic welder processing machine manufactured by Seidensha Electronics Co., Ltd. at a full width of 10 cm from one short side end of the laminate (width 91 cm, shown in FIG. 2). Pressure is applied for 6 seconds (voltage 200V, current 4KVA, frequency 15KHz), cooled for 5 seconds at room temperature, and the upper and lower layers are fused by high frequency welder processing with a width of 5mm. The middle material 1 for mattresses was produced without fixing the end portion and the other short side end portion. Moreover, the mattress 1 was produced using the inner material 1 for mattresses, and Asahi Kasei fusion (AKE69440) 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 central portion (width 30 cm, shown in FIG. 4) at a location 10 cm from one short side end of the laminate, an ultrasonic welder machine manufactured by Seidensha Electronics Co., Ltd. Apply air pressure for 6 seconds (voltage 200V, current 4KVA, frequency 15KHz), cool at room temperature for 5 seconds, and fix by bonding the upper and lower layers by high frequency welder processing with 5mm adhesive width, both ends of the long side And the other material for the mattress 2 was prepared without fixing the other short side end. Moreover, the mattress 2 was produced using the inner material 2 for mattresses, and Asahi Kasei fusion (AKE69440) as a side place. 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, at both ends (width: 15 cm, shown in FIG. 5) at a location 10 cm from one short side end of the laminate, an ultrasonic welder processing machine manufactured by Seidensha Electronics Co., Ltd. was used. Apply air pressure for 6 seconds (voltage 200V, current 4KVA, frequency 15KHz), cool at room temperature for 5 seconds, and fix by bonding the upper and lower layers by high frequency welder processing with 5mm adhesive width, both ends of the long side And the other material for the mattress 3 was prepared without fixing the other short side end. Moreover, the mattress 3 was produced using the inner material 3 for mattresses, and Asahi Kasei Fusion (AKE69440) 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, a commercially available chloroprene-based adhesive was applied over an area of 5 cm in width and 91 cm in length between the upper layer and the lower layer on one side of the short side of the laminate, and both were continuously fixed by adhesion. The middle material 4 for a mattress was produced without fixing both end portions of the long side and the other short side end portion. Moreover, the mattress 4 was produced using the intermediate material 4 for mattresses, and Asahi Kasei fusion (AKE69440) 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 2 is laminated on the upper and lower sides of the polyester network structure layer 1 and is commercially available over a region of 5 cm in width and 91 cm in length between each layer at one end of the short side of the laminate. The chloroprene-based adhesive was applied, and the three layers were continuously fixed by adhesion, and the mattress intermediate material 5 was produced without fixing the long side ends and the other short side end. Moreover, the mattress 5 was produced by using Asahi Kasei Fusion (AKE69440) as the mattress intermediate 5 and the side material. 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
5 cm wide x 91 cm long polyester fabric (warp, weft: polyester 56 dtex 36 filament (round cross section, false twisted yarn), plain weave structure, finishing density: warp 118 / 2.54 cm, weft: 100/2 .54 cm) was impregnated with a chloroprene adhesive to obtain an adhesive sheet. As the network structure layer, the polyester network structure layer 1 is laminated as an upper layer, the polyester network structure layer 2 is laminated as a lower layer, and the adhesive sheet is placed on one of the short side edges of the laminate, The lower layer and the lower layer were continuously fixed (adhered) via a fabric (adhesive sheet), and the other material of the long-side ends and the short-side ends was not fixed, and the mattress intermediate 6 was produced. Moreover, the mattress 6 was produced by using the fusion material (AKE69440) manufactured by Asahi Kasei as the inner material 6 for the mattress and the side material. Table 1 shows the results of measurement of the peel strength of the mattress intermediate 6 and the gadness of the mattress 3.

Mattress inner material 7 and mattress 7
A polypropylene Hessian cloth having a width of 5 cm and a length of 95 cm was impregnated with an epoxy adhesive to obtain an adhesive sheet. As the network structure layer, the polyolefin network structure layer 1 is laminated as the upper layer, the polyolefin network structure layer 2 is laminated as the lower layer, and the adhesive sheet is placed on one of the short side edges of the laminate, The lower layer was continuously fixed (adhered) via a fabric (adhesive sheet), and the mattress intermediate material 7 was produced without fixing the long side ends and the other short side end. Moreover, the mattress 7 was produced by using the mattress inner material 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
Using the polyester network structure layer 1 and the polyester network structure layer 2 without bonding, each layer was simply laminated by the same method as the mattress intermediate material 4 and the mattress intermediate material 8 and A mattress 8 was obtained. 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 mattress intermediate material 9 and a mattress 9 were obtained in the same manner as the mattress intermediate material 5 except that the entire surfaces of the laminated layers were adhered. Table 1 shows the results of measuring the peel strength of the mattress intermediate 9, the gagability of the mattress 9, and the like.

  The present invention can be suitably applied to a mattress for a gudge bed.

It is explanatory drawing of an example of the intermediate material for mattresses of this invention. It is explanatory drawing of the example of an aspect which fixes a network structure body layer continuously. It is explanatory drawing of the example of an aspect which fixes a network structure body layer continuously. It is explanatory drawing of the example of an aspect which fixes a network-structure body layer intermittently. It is explanatory drawing of the example of an aspect which fixes a network-structure body layer intermittently. It is explanatory drawing of the example of an aspect which fixes a network-structure body layer intermittently. It is explanatory drawing of the example of an aspect which fixes a network-structure body layer intermittently with a fixing means. 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 ′: laminate short side end, 9, 9 ′: laminate long side end, 11: Fixed part (full-width linear fused part), 13: fixed part (continuous adhesive part), 15: fixed part (linear fused part at the center), 17: fixed part (linear at both ends) (Fused part), 19: Fixed part (intermittent adhesive part), 21: Fixing means, 23: Bed, 25: Fixed part (adhesive part, for peel strength evaluation) 27: Fixed part (linear fused part, (For peel strength evaluation)

Claims (8)

A laminate in which a plurality of layers made of a three-dimensional network structure are laminated,
Each layer composed of the three-dimensional network structure is fixed at a width of 2 mm or more and 30 mm or less by intermittently welding at one end of the laminate by high-frequency welding or hot pressing. The end of is not fixed and
A mattress in which a plurality of fixing portions and non-fixing portions are alternately provided at the one end portion, or the fixing portion is provided at a center portion or both end portions of the one end portion. Middle wood for use. A laminate in which a plurality of layers made of a three-dimensional network structure are laminated,
Each layer composed of the three-dimensional network structure is fixed at a width of 2 cm or more and 50 cm or less by intermittently adhering at one end of the laminate with an adhesive, and the remaining ends are fixed. And not
A mattress in which a plurality of fixing portions and non-fixing portions are alternately provided at the one end portion, or the fixing portion is provided at a center portion or both end portions of the one end portion. Middle wood for use. The intermediate material for mattresses according to claim 2 , wherein each layer composed of a three-dimensional network structure is fixed by bonding with an adhesive via a fabric at one end of the laminate. A layer comprising the three-dimensional network structure of the top layer, the peeling strength between the next layer consisting of three-dimensional network structure which is fixed thereto, according to any one of claims 1 to 3 is more than 5kg Mattress for mattress. A layer comprising the three-dimensional network structure of the top layer, in any one of claims 1-4 difference compression hardness layers of three-dimensional network structure of the lowermost is 1kg / 200mmφ~30kg / 200mmφ 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 5 , wherein The intermediate material for a mattress according to any one of claims 1 to 6 , wherein the thickness of the laminate is 5 cm to 20 cm. A mattress using the mattress intermediate material according to any one of claims 1 to 7 .

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