JPH0529742U - Nonwoven laminate - Google Patents

Abstract

(57) [Summary] [Purpose] Excellent elastic recovery, moldability and shape retention,
Provided is a lightweight non-woven fabric laminate which is less likely to cause sagging, has improved breathability and strength. [Structure] A non-woven fabric in which a woven fabric, a knitted fabric or a non-woven fabric is laminated on the upper surface of a sheet-shaped laminate 5 in which a large number of non-woven fabric sheets 1 are laminated so that the laminating direction is the length or width direction of the sheet-like laminate 5. Laminate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a nonwoven laminate. In particular, the present invention relates to a reinforced nonwoven fabric laminate having excellent elastic recovery and shape retention, which is preferably used for clothing members and the like.

[0002]

[Prior Art]

 Hitherto, a nonwoven fabric laminate obtained by laminating two or three specific nonwoven fabric sheets in the thickness direction has been proposed as a base material for brassiere cups and other pad materials. (Japanese Utility Model Laid-Open No. 59-113383, Japanese Patent Laid-Open No. 56-134251, Japanese Patent Laid-Open No. 1-174659).

However, most of these non-woven fabric laminates are those in which a plurality of non-woven fabric sheets are laminated in the thickness direction and laminated. Therefore, usually, the constituent fibers of each non-woven fabric sheet constituting the non-woven fabric laminate are mainly oriented in the plane direction of the non-woven fabric sheet, and most of them cannot be said to be oriented in the thickness direction as a whole. Therefore, even in the non-woven fabric laminate, the fibers constituting them are mostly oriented in the plane direction of the non-woven fabric laminate, and it cannot be said that they are oriented in the thickness direction as a whole. In addition, the fibers are arranged in a substantially uniform density along the plane direction, and accordingly, the structure is such that the existing density of fibers is different along the plane direction (for example, a structure similar to a honeycomb structure). Is not considered.

[0004]

[Problems to be solved by the device]

 In the conventional non-woven fabric laminate, as described above, the constituent fibers are mainly oriented in the plane direction of the non-woven fabric sheet, and therefore, although various proposals have been made, elastic recovery in the thickness direction is achieved. It is not possible to obtain a non-woven fabric that is excellent in terms of moldability and shape retention when it is molded like a cup base material for brassieres, and that is resistant to sagging and deformation. .. In addition, there is a problem that it is difficult to say that the fibers are arranged with a substantially uniform density along the surface direction, and therefore the air permeability is not necessarily sufficiently excellent.

The present invention solves the above problems of the conventional non-woven fabrics, has excellent elastic recovery, good moldability and shape retention, and thus is less likely to cause fatigue, and has improved breathability and strength. It is an object to provide a light-weight non-woven laminate having less deterioration.

[0006]

[Means for Solving the Problems]

 To achieve the above object, the nonwoven fabric laminate of the present invention has the following constitution. (1) A sheet-like laminate comprising a laminate of non-woven sheets, wherein the laminating direction of the non-woven sheets constituting the sheet-like laminate is the length or width direction of the sheet-like laminate. A non-woven fabric laminate in which a woven fabric, a knitted fabric or a non-woven fabric is laminated on at least one side of.

(2) A woven fabric, a knitted fabric, or a non-woven fabric is laminated on at least one surface of the sheet-shaped laminate described in the above (1), and a sheet-shaped laminate is further laminated via the woven fabric, the knitted fabric or the non-woven fabric. The nonwoven fabric laminate according to item (1) above.

(3) A nonwoven fabric laminate formed by alternately laminating two or more layers of the sheet-like laminate according to the item (1) and a woven fabric, a knitted fabric or a nonwoven fabric. (4) The nonwoven fabric laminate according to any one of (1) or (3), wherein both the uppermost layer and the lowermost layer are woven, knitted, or nonwoven.

(5) Arrangement of the non-woven fabric sheets constituting each sheet-like laminate with respect to the sheet-like laminate in which the respective sheet-like laminates are laminated on the upper layer or the lower layer through the woven, knitted or non-woven fabric. The nonwoven fabric laminate according to any one of the items (2) to (4), wherein the nonwoven fabric is laminated so that the directions intersect each other.

(6) Any one of the above items (1) to (5), wherein the sheet-like laminate is a sheet-like laminate in which a non-woven fabric sheet is folded into a bellows shape and the contacting surfaces are joined together. The nonwoven fabric laminate according to item 1.

(7) The sheet-like laminate is a sheet-like laminate in which a large number of nonwoven fabric sheets are laminated so that the laminating direction is the length or width direction of the sheet-like laminate. The nonwoven fabric laminate according to any one of items (1) to (5).

(8) The nonwoven fabric laminate according to item (5), wherein the intersecting angle is 90 to 20 degrees. (9) Item (1) to (1) above, wherein a part of the fibers constituting the non-woven fabric sheet is heat-bonded with a core-sheath type composite fiber having a heat-adhesive component as a sheath and a component having a higher melting point as a core. The nonwoven fabric laminate according to any one of (8).

(10) The nonwoven fabric laminate according to any one of the above items (1) to (9), wherein at least a part of the fibers constituting the nonwoven fabric sheet is a shrinkable fiber. (11) The nonwoven fabric laminate according to any one of items (1) to (10), wherein the sheet-shaped laminate is bonded to a woven fabric, a knitted fabric, or a nonwoven fabric with a hot melt adhesive.

(12) The nonwoven fabric laminate according to any one of the items (1) to (11), wherein the thickness of the nonwoven fabric laminate is 2 to 30 mm.

[0015]

[Action]

 The non-woven fabric laminate of (1) of the present invention is a sheet-like laminate composed of a laminate of non-woven fabric sheets, and the laminating direction of the non-woven fabric sheets constituting the sheet-like laminate is the length of the sheet-like laminate. Alternatively, since the woven, knitted or non-woven fabric is laminated on at least one side of the sheet-shaped laminate in the width direction, the sheet surface of the non-woven sheet is arranged so as to be almost upright in the thickness direction of the sheet-shaped laminate. It is considered that the constituent fibers are mainly oriented in the thickness direction, and the elastic recovery is excellent, and the moldability and shape retention are improved. Further, since the laminating direction of the non-woven fabric sheets forming the sheet-shaped laminate is the length or width direction of the sheet-shaped laminate, the laminating boundary surface portion of the non-woven fabric sheet is slightly along the plane direction of the sheet-shaped laminate. Since the fiber density becomes smaller and the fiber density of the non-woven sheet itself is higher than that of the laminated boundary surface, it has a structure similar to that of a honeycomb structure, and there is a part where the fiber density becomes small, so there is breathability. Will also be good.

Further, the sheet-shaped laminated body itself is formed by joining non-woven sheets at the laminating surface portion, but since the entanglement of fibers in the laminating surface portion is small, when the non-woven sheet is pulled in the laminating direction, the laminated sheet is laminated. Although it is easily peeled off from the boundary surface portion, in the present invention, since the woven fabric, knitted fabric or nonwoven fabric is laminated on at least one surface of the sheet-shaped laminate, such a decrease in strength can be prevented. Therefore, it is possible to easily withstand the stress in the working process, the stress in use, the stress in washing, etc.

Further, as described in the above item (2), in the nonwoven fabric laminate of the present invention, a woven fabric, a knitted fabric or a nonwoven fabric is laminated on at least one surface of the sheet-like laminate, and the woven fabric, the knitted fabric or the nonwoven fabric is laminated. By forming a laminate of sheet-like laminates via the above, a non-woven fabric laminate having the same feel on both the front and back surfaces and exhibiting the above-described action can be obtained.

Further, as described in the above item (3), in the nonwoven fabric laminate of the present invention, the sheet-like laminate and the woven fabric, knitted fabric or nonwoven fabric are alternately laminated by two or more layers. It is possible to obtain a nonwoven fabric laminate having higher strength.

Further, as described in the above item (4), in the nonwoven fabric laminate of the present invention, when the uppermost layer and the lowermost layer are both woven, knitted or nonwoven, the strength is higher and the front and back surfaces are The non-woven fabric laminate having improved abrasion resistance can be obtained.

Further, as described in the above item (5), in the nonwoven fabric laminate of the present invention, a sheet in which each sheet-like laminate is laminated on the upper layer or the lower layer via a woven fabric, a knitted fabric or a nonwoven fabric. A non-woven fabric laminate having further improved strength can be obtained by stacking the non-woven fabric sheets constituting each sheet-shaped laminate product in such a manner that the arrangement directions of the non-woven fabric sheets in the sheet-like laminate product intersect each other. ..

Further, as described in the above item (6), in the nonwoven fabric laminate of the present invention, the sheet-like laminate is a sheet obtained by folding the nonwoven fabric sheet into a bellows shape and joining the contacting surfaces. A non-woven fabric laminate having a further improved elastic recovery can be obtained by adopting a constitution of a linear laminate.

In addition, as described in the above item (7), in the nonwoven fabric laminate of the present invention, the sheet-like laminate is composed of a large number of nonwoven fabric sheets whose laminating direction is the length or width of the sheet-like laminate. By constructing a sheet-like laminated body that is formed by laminating multiple sheets in the same direction, a thick sheet-like laminated body is manufactured, and then sliced into a predetermined thickness The sheet-like laminated body can be easily manufactured, which is advantageous in terms of cost. It is also preferable in terms of breathability.

In addition, as described in the above item (8), in the nonwoven fabric laminate of the present invention, the sheet-like laminate is laminated on the upper layer or the lower layer through a woven fabric, a knitted fabric or a nonwoven fabric, and is a sheet-like laminate. On the other hand, a non-woven fabric laminate having high strength is preferable when the crossing angle at which the arrangement directions of the non-woven fabric sheets composing each sheet-like laminate intersect is 90 to 20 degrees.

Further, as described in the above item (9), in the non-woven fabric laminate of the present invention, a part of the fibers constituting the non-woven fabric sheet has a heat-adhesive component as a sheath, and a component having a higher melting point than that is formed. By using a core-sheath type composite fiber as the core that is heat-bonded, it is possible to obtain a non-woven fabric laminate that has high strength, less deterioration in breathability, less discomfort such as stickiness, and good texture. It is possible and preferable.

Further, as described in the above item (10), in the nonwoven fabric laminate of the present invention, at least a part of the fibers constituting the non-woven fabric sheet is a shrinkable fiber. A non-woven fabric laminate having more excellent elasticity and elastic recovery is preferable.

Further, as described in the above item (11), in the nonwoven fabric laminate of the present invention, the sheet-like laminate and the woven fabric, the knitted fabric or the nonwoven fabric are bonded by a hot melt type adhesive. By doing so, it is possible to obtain a non-woven fabric laminate which has a small reduction in feeling and has good strength.

Further, in the non-woven fabric laminate of the present invention as described in the above (12), by setting the thickness of the non-woven fabric laminate to 2 to 30 mm, for example, a brassiere cup base material, milk leakage Preventive cup base material, swimsuit bust cup base material, holding pad base material for local areas for men, shoulder pad base material for clothing, hip pad base material, side pad base material, abdomen such as maternity A non-woven fabric laminate that has good flexibility when used as a human body wearing substrate such as pad substrate, protector pad substrate, mask substrate, shoe sole substrate, etc. preferable.

[0028]

【Example】

 As the non-woven fabric sheet which is a material constituting the non-woven fabric laminate referred to in the present invention, a non-woven fabric sheet which is usually used can be used.

FIG. 1 shows a perspective view of an example of a nonwoven fabric sheet used as a starting material. In FIG. 1, 1 is a non-woven fabric sheet, and 2 is a schematic representation of the fibers that make up the non-woven fabric sheet.

Various fibers can be used as the fibers 2 constituting the non-woven sheet 1 and are not particularly limited, but typical examples include polyamide fibers such as nylon 6 and nylon 66, polyethylene terephthalate, and the like. Polyester fiber and polyolefin fiber such as polypropylene. Of course, other fibers can be used, and it is also preferable in some cases to use semi-synthetic fibers such as rayon and natural fibers such as cotton, wool and other animal hair.

These fibers may be filaments (long fibers) or staple fibers (short fibers). When short fibers are used, there is no particular limitation, but the length is 25 to 105 mm, preferably 35 to 75 mm. What is used.

Further, the thickness of the fiber may be appropriately selected according to the purpose and is not particularly limited, but from the viewpoint of appropriate flexibility and elastic recovery, it is about 0.5 to 50 d (denier). It is used, but it is particularly preferably about 1 to 15 d.

As the form of the fiber, a single fiber or a composite fiber may be used. Further, it is particularly preferable to use the crimpable fiber in at least a part thereof in terms of flexibility and elastic recovery.

Generally, at least a part of the entangled portions between the fibers constituting the nonwoven fabric sheet are bonded to each other, and this adhesive component has a low melting point lower than that of the fibers constituting the nonwoven fabric. It is also possible to use heat-adhesive conjugate fibers or heat-adhesive conjugate fibers such as core-sheath conjugate fibers or side-by-side conjugate fibers composed of a low-melting point component and ordinary fiber components. Further, it may be bonded with an adhesive binder that is usually used for non-woven fabric.

The heat-adhesive fiber is not particularly limited, and a fiber having an appropriate melting point may be selected according to the type of fiber constituting the nonwoven fabric sheet. Typically, fibers made of nylon 12, polybutylene terephthalate, polyethylene adipate, polyethylene or copolymers thereof are mentioned.

When these heat-adhesive fibers are used, they may be appropriately selected in consideration of the strength and texture of the target non-woven fabric, and are not particularly limited. For example, the fibers constituting the non-woven fabric sheet. On the other hand, the heat-adhesive fibers may be selected in the range of 30 to 70% by weight, preferably 50% by weight or more.

It is particularly preferable to use the thermoadhesive conjugate fiber, and in this case, as the low melting point component, the same material as the above-mentioned thermoadhesive fiber can be used. Particularly, a core-sheath type composite fiber is preferably used. For example, a core-sheath type composite fiber in which a core component is nylon 6 or nylon 66 and a sheath component is nylon 12 or a copolymer thereof, and a core component is polyethylene terephthalate and a sheath component is poly Typical examples are a core-sheath type composite fiber made of butylene terephthalate or a copolymer thereof, or a polyethylene adipate or a copolymer thereof, and a core-sheath type composite fiber made of polypropylene as a core component and polyethylene or a copolymer as a sheath component. Can be mentioned.

When these conjugate fibers are used, the conjugate fibers themselves are also constituent fibers of the non-woven fabric sheet, and thus are not particularly limited, but for example, ordinary fibers (non-heat-adhesive fibers) constituting the non-woven fabric sheet 0 The heat-adhesive conjugate fiber can be used in the range of 30 to 100% by weight with respect to 70% by weight. By using the heat-adhesive conjugate fiber, only the low-melting-point component that is a part of the heat-adhesive conjugate fiber (for example, the sheath portion of the core-sheath type conjugate fiber) is melted and only the adhesive effect is exhibited. Since non-heat-adhesive components that are normal fiber components (such as cores of core-sheath type composite fibers) do not melt, there is no loss of breathability or feel, and there is no unpleasant sticky feeling. It is preferable because it can achieve the strength of a non-woven sheet.

When the adhesive binder is used, it is not particularly limited as long as it is an adhesive binder used in the production of a nonwoven fabric, and examples thereof include polyacrylic emulsion, polyester binder, polyurethane binder, and polyacetic acid. Various materials such as vinyl or polyvinyl acetate copolymer binders and synthetic rubber binders (eg, acrylonitrile-butadiene rubber, styrene-butadiene rubber, butyl rubber) can be used.

When a binder is used, it is preferably heat-adhesive. The amount used may be appropriately adjusted according to the purpose. For example, it may be selected in the range of 10 to 60% by weight, preferably 30 to 50% by weight based on the fibers constituting the non-woven fabric so as not to impair the strength and texture. good.

Usually, in the nonwoven fabric sheet described above, the constituent fibers 2 thereof tend to be oriented mainly in the plane direction of the nonwoven fabric sheet, and are difficult to be oriented mainly in the thickness direction.

Next, the sheet-shaped laminate referred to in the present invention will be described. Although the method for producing the sheet-like laminate is not particularly limited, for example, the sheet-like laminate used in the present invention can be produced by the following method.

That is, a continuous sheet of the nonwoven fabric sheet 1 as described with reference to FIG. 1 is folded into a bellows shape as shown in the side view of FIG. 4 and press in the folding direction to bring the surfaces 3 and 4 into contact with each other and heat to bond them. When the non-woven fabric sheet 1 already contains the heat-adhesive fiber, the heat-adhesive conjugate fiber, or the heat-adhesive binder, the adhesive may not be applied to the surfaces 3 and 4, in particular.

FIG. 3 shows a perspective view of an example of the sheet-shaped laminate 5 thus obtained. As is clear from FIG. 3, the sheet in which the laminating direction (T-T ′ direction) of the nonwoven fabric sheet 1 constituting the sheet-shaped laminate 5 is the length direction (or width direction) of the sheet-shaped laminate 5 The laminated body 5 is obtained. In this case, the constituent fibers of the non-woven fabric sheet 1 are also oriented in the thickness direction (XX 'direction) of the sheet-shaped laminate 5. That is, since the nonwoven fabric sheet 1 stands in the thickness direction, it is possible to increase the state in which the constituent fibers are oriented in the thickness direction.

When one sheet-like laminated body 5 is obtained from one continuous nonwoven sheet 1 as shown in FIG. 3, in addition to the fact that the fibers are oriented particularly in the thickness direction. In addition, a sheet-like laminate having more excellent elastic recovery in the thickness direction can be obtained. In addition, in FIG. 3, reference numeral 7 denotes a laminated boundary surface portion.

An example of another sheet-like laminated body and an example of a manufacturing method thereof will be described below with reference to FIGS. 4 to 6. FIG. 4 is a side view showing a state in which the sheet-shaped laminate is being manufactured. That is, the non-woven sheet 1 as described in FIG. 1 is folded into a bellows shape in the same manner as in FIG. 2 as shown in the side view of FIG. 4 in a state of being manufactured. The difference from the case of FIG. It was quite big. As in the case of FIG. 2, if necessary, an appropriate adhesive is applied to the surfaces 3 and 4, and the surfaces 3 and 4 are brought into contact with each other by pressing in the folding direction to heat and bond them. When the non-woven fabric sheet 1 already contains the heat-adhesive fiber, the heat-adhesive conjugate fiber, and the heat-adhesive binder, it is not necessary to apply the adhesive to the faces 3 and 4, as shown in FIG. This is similar to the case of FIG. Further, although not shown, a plurality of non-woven fabric sheets having a size comparable to the folding width may be superposed and heated and pressed similarly to be joined.

An example of the laminate 6 thus obtained is shown in FIG. 5 in a side view. The obtained laminated body 6 is then sliced along the dotted lines G, H, I, J, K, L and M to have a desired thickness. FIG. 6 shows a perspective view of an example of the sheet-like laminated body 5 used in the present invention obtained in this way.

As is apparent from FIG. 6, the laminating direction (TT ′ direction) of the non-woven fabric sheet 1 constituting the sheet-shaped laminate 5 is the length direction (or width direction) of the sheet-shaped laminate 5. A sheet-like laminate 5 is obtained. In this case, the constituent fibers of the non-woven fabric sheet 1 are also oriented in the thickness direction (XX 'direction) of the sheet-shaped laminate 5. That is, since the nonwoven fabric sheet 1 stands in the thickness direction, it is possible to increase the state in which the constituent fibers are oriented in the thickness direction. Therefore, a sheet-shaped laminate having excellent elastic recovery in the thickness direction can be obtained. In addition, in FIG. 6, reference numeral 7 denotes a laminated boundary surface portion.

Next, the nonwoven fabric laminate of the present invention will be described. The sheet-like laminated body 5 as shown in FIGS. 3 and 6 has excellent elastic recovery in the thickness direction, and also has a slightly higher fiber density in the laminated boundary surface portion 7 of the nonwoven fabric sheet 1 constituting the sheet-like laminated body 5. On the other hand, since the fiber density of the non-woven fabric sheet 1 itself is higher than that of the laminated boundary surface part 7, it has a structure similar to a honeycomb structure, and there is a part where the fiber density decreases. Although it has a property that the air permeability is also good, there is a problem in strength that the nonwoven fabric sheet 1 is easily peeled from the laminated boundary surface portion 7 when pulled in the laminating direction (T-T 'direction).

In order to improve this problem, the non-woven fabric laminate of the present invention is one in which a woven fabric, a knitted fabric or a non-woven fabric is laminated on at least one surface of the sheet-shaped laminate 5. 7 to 12 are perspective views or schematic cross-sectional views of nonwoven fabric laminates according to some embodiments of the present invention.

FIG. 7 is a perspective view showing an embodiment of the nonwoven fabric laminate of the present invention. In the figure, 5 is a sheet-like laminated body composed of the non-woven fabric sheet 1, and an appropriate adhesive such as a thin sheet of a non-woven fabric in which a woven fabric, a knitted fabric or a non-woven fabric indicated by 8 is formed on the upper surface of the sheet-like laminated body 5. Are heat-bonded. In addition, 7 indicates a laminated boundary surface portion.

As the fibers constituting the woven fabric, knitted fabric or nonwoven fabric 8, various fibers can be used and are not particularly limited. Typical examples are polyamide fibers such as nylon 6 and nylon 66, polyethylene terephthalate. Polyester fibers such as, acrylic fibers, polyvinylidene chloride fibers, polyvinyl chloride fibers, vinylon fibers, and polyolefin fibers such as polypropylene. Of course, other fibers can also be used, and it is also preferable to use semi-synthetic fibers such as rayon and natural fibers such as cotton, wool and other animal hair in particular, especially in the case of woven or knitted fabric, polyamide and cotton. It is also preferable to use a blended yarn or a blended yarn of polyester and cotton. Further, when the elasticity is particularly important, it is preferable to use polyurethane fibers in combination. The thickness of the fiber may be appropriately selected according to the purpose and is not particularly limited, but usually about 0.3 to 15 d (denier) is preferable, and about 1 to 4 d is particularly preferably used.

As the woven or knitted fabric, various woven fabrics or knitted fabrics can be used and are not particularly limited. For example, tricot knitting, Russell knitting, plain knitting, plain weave, twill weave, satin weave, and others depending on the purpose and use. And select an appropriate organization.

As the non-woven fabric, an ordinary non-woven fabric similar to the non-woven fabric sheet 1 shown in FIG. 1 described above can be used. In general, the fibers constituting this non-woven fabric are generally oriented mainly in the plane direction of the non-woven fabric as described above.

In particular, for applications requiring elasticity, it is preferable to stack knitted fabrics, and among them, tricot and single jersey are preferable. An appropriate adhesive is used for adhering the laminated surface of the sheet-shaped laminate 5 and the woven, knitted or non-woven fabric 8, but a hot-melt type adhesive, particularly a non-woven sheet-shaped non-woven fabric of heat-adhesive fibers. However, it is preferably used because it can bond firmly with little deterioration in texture.

FIG. 8 shows an example of the non-woven fabric laminate of the present invention in which a sheet-like laminate 5 A is laminated on one side with a woven, knitted or non-woven fabric 8 and another sheet-like laminate 5 B is further laminated thereon. FIG.

In FIG. 8, the arrangement direction of the nonwoven fabric sheet 1 of the sheet-shaped laminated body 5A is the AA ′ direction, and the arrangement direction of the nonwoven fabric sheet 1 of the sheet-shaped laminated body 5B is the BB ′ direction. .. It is preferable to laminate the sheet-shaped laminates 5A and 5B in the thickness direction so that the intersecting angle formed by the AA ′ direction and the BB ′ direction becomes the bias direction from the viewpoint of further improving the strength. The arrangement direction of the nonwoven fabric sheet 1 of the sheet-shaped laminate 5A (the A-A 'direction) and the arrangement direction of the nonwoven fabric sheet 1 of the sheet-like laminate 5B (the B-B' direction) are not necessarily limited thereto. Even if and are parallel, there is no problem because a woven fabric, a knitted fabric, or a non-woven fabric is laminated in the middle.

When intersecting with the bias direction, an angle formed by the AA ′ direction and the BB ′ direction is about 20 to 90 degrees, preferably 70 to 90 degrees, and depending on the purpose, The angle can be selected. Generally, the closer it is to 90 degrees, the more preferable it is in the sense that the strength in each direction is easily balanced. In the case of FIG. 8, the angle formed by the arrangement direction of the non-woven sheet 1 of the sheet-like laminated body 5A (the AA 'direction) and the arrangement direction of the non-woven sheet 1 of the sheet-like laminated body 5B (the BB' direction) is An example in the case of 90 degrees is shown.

FIG. 9 is a perspective view of an embodiment of a non-woven fabric laminate of the present invention having a structure in which three sheet-like laminates 5A, 5B and 5C are laminated via a woven, knitted or non-woven fabric 8A, 8B. It is shown.

Sheet-shaped laminate 5A is laminated on the upper layer and the lower layer of the sheet-shaped laminated body 5A with the woven, knitted or non-woven fabrics 8A and 8B interposed therebetween so that the arrangement directions of the non-woven fabric sheets 1 are 90 degrees to each other. The bodies 5B and 5C are stacked.

FIG. 10 is a schematic cross-sectional view showing an embodiment of the nonwoven fabric laminate of the present invention in which two or more layers of a sheet-like laminate and a woven fabric, a knitted fabric or a nonwoven fabric are alternately laminated. A woven fabric, a knitted fabric or a non-woven fabric 8A is laminated on the sheet-shaped laminate 5A, and a sheet-shaped laminate 5B, a woven fabric, a knitted fabric or a non-woven fabric 8B, a sheet-shaped laminate 5C, a woven fabric, a knitted fabric or a non-woven fabric 8C is further laminated thereon in this order. It was done.

FIG. 11 is a schematic cross-sectional view showing an embodiment of the nonwoven fabric laminate of the present invention in which both the uppermost layer and the lowermost layer are laminated with a woven fabric, a knitted fabric or a nonwoven fabric. The sheet-shaped laminate 5A was laminated on the woven, knitted or non-woven fabric 8A, and further the woven, knitted or non-woven fabric 8B, the sheet-like laminated body 5B, the woven, knitted or non-woven fabric 8C was laminated in this order. It is a thing.

FIG. 12 is a schematic cross-sectional view showing another embodiment of the nonwoven fabric laminate of the present invention in which both the uppermost layer and the lowermost layer are laminated with a woven fabric, a knitted fabric or a nonwoven fabric. A sheet-shaped laminate 5 is laminated on a woven, knitted or nonwoven fabric 8A, and a woven, knitted or nonwoven fabric 8B is further laminated thereon.

Also in the case as shown in FIGS. 10 to 11, the respective sheet-shaped laminates are compared with the sheet-like laminated body in which the respective sheet-like laminated bodies are laminated on the upper layer or the lower layer via the woven fabric, knitted fabric or nonwoven fabric. It is preferable to stack the non-woven fabric sheets so that the non-woven fabric sheets constituting them are arranged so that the non-woven fabric sheets are arranged in an intersecting direction, but the non-woven fabric sheets may be arranged in parallel directions as described above.

The non-woven fabric laminate of the present invention as described above has excellent elasticity recovery, good moldability and shape retention, and thus is less likely to cause sagging, has improved breathability and strength, and has excellent stackability. Since the fiber density inevitably becomes small in the layer boundary surface portion and the elastic recovery property is good, it can be made thin, and thus a light laminated non-woven fabric can be obtained. Leak-preventing cup base material, swimsuit bust cup base material, local holding pad base material for men, shoulder pad base material for clothing, hip pad base material, side pad base material, abdominal pad for maternity, etc. It can be used in a wide range of applications such as base materials, pad base materials for protectors, base materials for masks, base materials for body wear such as shoe sole base materials, etc., cut into the required shape and sewn, or processed by pressing or thermoforming do it Can be used. For example, when molded into a brassiere cup, the bulged part at the center of the cup is easily deformed by washing, etc., and when it is worn it has excellent elastic recovery even when it is dented by external force. As a result, the deformation can be easily recovered and the shape-retaining effect of the breast can be maintained. Also, the cushioning property in the thickness direction is excellent, and a good wearing feeling can be obtained. It also has good breathability and does not get stuffy. Since the strength is also improved as described above, it has sufficient strength to withstand the stress applied during processing and to withstand washing. In addition, since it has a sheet-shaped laminate in which the constituent fibers are oriented in the thickness direction as well, it has good moldability, and can form sharp edges, for example, which are more likely to cause problems than in the case of normal nonwoven fabric molding. A molded product having an extremely excellent appearance can be obtained.

Further, by utilizing the above characteristics, it can be suitably used for the above-mentioned pad material and other uses. Further, a base material other than these may be further laminated and used depending on the purpose.

[0067]

[Effect of the device]

 INDUSTRIAL APPLICABILITY The present invention can provide a nonwoven fabric laminate having excellent elasticity recovery, good moldability, shape retention, breathability, and strength.

As described above, in the non-woven fabric laminate of the present invention, a woven fabric, a knitted fabric or a non-woven fabric is laminated on at least one surface of the above-mentioned sheet-shaped laminate, and the sheet-shaped laminate is further provided via the woven fabric, the knitted fabric or the non-woven fabric. With the constitution in which the above are laminated, it is possible to provide a cloth having a feeling of a non-woven fabric on both front and back surfaces, and to provide a non-woven cloth laminate having the above effects.

Further, as described above, in the nonwoven fabric laminate of the present invention, the sheet-like laminate and the woven fabric, the knitted fabric or the nonwoven fabric are alternately laminated in two or more layers to obtain a stronger nonwoven fabric laminate. You can provide things.

Further, as described above, in the nonwoven fabric laminate of the present invention, the uppermost layer and the lowermost layer are both woven, knitted or nonwoven, so that the strength is higher and the abrasion resistance is improved on the front and back surfaces. A nonwoven fabric laminate can be provided.

In addition, as described above, in the nonwoven fabric laminate of the present invention, each sheet-like laminated body is laminated on the upper layer or the lower layer through a woven fabric, a knitted fabric, or a nonwoven fabric. A non-woven fabric laminate having further improved strength can be provided by arranging the non-woven fabric sheets constituting the linear laminate so that the arrangement directions of the nonwoven fabric sheets cross each other.

In addition, as described above, in the nonwoven fabric laminate of the present invention, the sheet-like laminate is a sheet-like laminate in which a nonwoven fabric sheet is folded into a bellows shape and the contacting surfaces are joined together. With the constitution, it is possible to provide a nonwoven fabric laminate having further improved elastic recovery.

Further, as described above, in the nonwoven fabric laminate of the present invention, the sheet-like laminate is composed of a plurality of nonwoven fabric sheets such that the laminating direction thereof is the length or width direction of the sheet-like laminate. By adopting a structure of a sheet-shaped laminated body formed by laminating a plurality of sheets, it is possible to easily manufacture a plurality of sheet-shaped laminated bodies at one time with a simple process, which is advantageous in terms of cost. It is also preferable in terms of breathability.

Further, as described above, in the nonwoven fabric laminate of the present invention, the sheet-like laminate is laminated on the upper layer or the lower layer of the sheet-like laminate through the woven fabric, the knitted fabric or the nonwoven fabric. A non-woven fabric laminate having higher strength can be provided by setting the crossing angle at which the arrangement directions of the non-woven fabric sheets constituting the above are 90 to 20 degrees.

Further, as described above, in the nonwoven fabric laminate of the present invention, a core-sheath type in which a part of the fibers constituting the nonwoven fabric sheet has a thermoadhesive component as a sheath and a component having a higher melting point as a core By heat-bonding the composite fibers, it is possible to provide a non-woven fabric laminate having a high strength, a small decrease in air permeability, a small amount of discomfort such as stickiness, and a good texture.

In addition, as described above, in the nonwoven fabric laminate of the present invention, when at least a part of the fibers constituting the nonwoven fabric sheet is a shrinkable fiber, the elasticity and elasticity are further improved. A nonwoven fabric laminate having excellent recoverability can be provided.

Further, as described above, in the nonwoven fabric laminate of the present invention, the sheet-like laminate and the woven fabric, the knitted fabric or the nonwoven fabric are bonded to each other with a hot melt type adhesive to obtain a good texture. It is possible to provide a non-woven fabric laminate having less deterioration and good strength.

Further, as described above, in the non-woven fabric laminate of the present invention, by providing the non-woven fabric laminate with a thickness of 2 to 30 mm, it is possible to provide a non-woven fabric laminate having good flexibility and easy to process. You can

[Brief description of drawings]

FIG. 1 is a perspective view of an example of a nonwoven fabric sheet used as a starting material of the present invention.

FIG. 2 is a side view showing an intermediate state in the course of manufacturing the sheet-shaped laminate used in the present invention.

FIG. 3 is a perspective view of an example of a sheet-shaped laminate used in the present invention.

FIG. 4 is a side view showing a state in which the sheet-shaped laminate used in the present invention is being manufactured.

FIG. 5 is a side view of a laminate obtained in a state in which the sheet-like laminate used in the present invention is being manufactured.

FIG. 6 is a perspective view of another example of the sheet-shaped laminate used in the present invention.

FIG. 7 is a perspective view of a nonwoven fabric laminate according to an embodiment of the present invention.

FIG. 8 is a perspective view of a nonwoven fabric laminate according to another embodiment of the present invention.

FIG. 9 is a perspective view of a nonwoven fabric laminate according to still another embodiment of the present invention.

FIG. 10 is a schematic cross-sectional view of a nonwoven fabric laminate according to still another embodiment of the present invention.

FIG. 11 is a schematic cross-sectional view of a nonwoven fabric laminate according to still another embodiment of the present invention.

FIG. 12 is a schematic cross-sectional view of a nonwoven fabric laminate according to still another embodiment of the present invention.

[Explanation of symbols]

 1 Nonwoven Sheet 2 Constituent Fiber 3 Surface of Nonwoven Sheet 4 Surface of Nonwoven Sheet 5 Sheet-like Laminate 5A Sheet-like Laminate 5B Sheet-like Laminate 5C Sheet-like Laminate 6 Laminate 7 Laminated Interface 8 Fabric, Knitted or Non-woven Fabric 8A Woven fabric, knitted fabric or nonwoven fabric 8B Woven fabric, knitted fabric or nonwoven fabric 8C Woven fabric, knitted fabric or nonwoven fabric

Claims (12)

[Scope of utility model registration request] 1. A sheet-like laminate comprising a laminate of non-woven sheets, wherein the non-woven sheets constituting the sheet-like laminate are laminated in the length or width direction of the sheet-like laminate. A non-woven fabric laminate in which a woven fabric, a knitted fabric or a non-woven fabric is laminated on at least one side of a body. 2. A non-woven fabric laminate in which a woven fabric, a knitted fabric or a non-woven fabric is laminated on at least one surface of the sheet-shaped laminate according to claim 1, and a sheet-shaped laminate is further laminated via the woven fabric, the knitted fabric or the non-woven fabric. 3. The sheet-shaped laminate and the woven fabric according to claim 1.
A non-woven laminate formed by alternately laminating two or more layers of a knitted fabric or a non-woven fabric. 4. The nonwoven fabric laminate according to claim 1, wherein both the uppermost layer and the lowermost layer are a woven fabric, a knitted fabric or a nonwoven fabric. 5. The arrangement direction of the non-woven fabric sheets forming each sheet-like laminate intersects with the sheet-like laminate in which the respective sheet-like laminates are laminated on the upper layer or the lower layer through a woven fabric, a knitted fabric or a nonwoven fabric. The non-woven fabric laminate according to any one of claims 2 to 4, wherein the non-woven fabric laminate is laminated so as to be oriented in the following direction. 6. The nonwoven fabric laminate according to any one of claims 1 to 5, wherein the sheet-like laminate is a sheet-like laminate in which a nonwoven fabric sheet is folded into a bellows shape, and the contacting surfaces are joined together. .. 7. The sheet-like laminate is a sheet-like laminate in which a large number of nonwoven fabric sheets are laminated so that the laminating direction is the length or width direction of the sheet-like laminate. The nonwoven fabric laminate according to any one of 1 to 5. 8. The nonwoven fabric laminate according to claim 5, wherein the intersecting angle of intersection is 90 to 20 degrees. 9. A core-sheath type composite fiber having a part of fibers constituting a non-woven fabric sheet as a sheath made of a heat-adhesive component and a core made of a component having a higher melting point than the heat-adhesive component. The nonwoven fabric laminate according to any one of 1. 10. The nonwoven fabric laminate according to claim 1, wherein at least a part of fibers constituting the nonwoven fabric sheet is a shrinkable fiber. 11. The non-woven fabric laminate according to claim 1, wherein the sheet-like laminate and the woven fabric, knitted fabric or non-woven fabric are adhered by a hot-melt adhesive. 12. The nonwoven fabric laminate according to claim 1, wherein the nonwoven fabric laminate has a thickness of 2 to 30 mm.