JP2021146589A - Laminated inner cotton - Google Patents

Abstract

To provide a laminated inner cotton which uses an environmentally friendly inner cotton obtained by cotton blending of vegetable fiber kapok, and which is easy to handle in a sewing step or the like without impairing texture.SOLUTION: A laminated inner cotton includes a laminate of non-woven fabrics on at least one surface of a sheet-shaped inner cotton obtained by cotton blending of vegetable fiber kapok.SELECTED DRAWING: Figure 1

Description

The present invention relates to a laminated inner pad with good handleability, which uses an environment-friendly sheet-shaped inner pad containing plant fiber kapok, which is used for clothing and bedding.

Conventionally, in order to obtain heat retention of the body in the cold winter season, heat insulation with an air layer between the outside air and the skin has been used by using heat insulating materials such as feathers and inner cloth between the outer fabric and the like. Uses structured winter clothing and bedding.
As for the inner cotton used for the purpose of providing heat retention, a synthetic fiber material such as polyester, which has mechanical performance and is easy to produce and process, is often used. However, in recent years, awareness of the global environment has been increasing worldwide, and companies have been faced with issues such as waste plasticization and reduction of carbon dioxide emissions. Attention is being paid to cotton cotton made from natural fibers.

Typical natural fibers include cotton, silk, kapok, flax, cannabis, potato hemp, wool, alpaca, cashmere, and mohair. Among them, the plant fiber kapok has recently attracted attention. In particular, sheet-shaped inner cotton using plant fiber kapok (hereinafter, also referred to as kapok) has various problems in its unraveling and sewing process. Because kapok has a short fiber length and is light, the fibers fall off and scatter during unraveling, cutting and sewing work, causing the kapok to be mixed or scattered in sewing equipment and other textile products. This is because there is a problem that the working environment is deteriorated, and the use of kapok has been avoided in providing high quality cotton.

The following Patent Documents 1, 2 and 3 describe a non-woven fabric and a laminate of a porous coating and cotton, but all of them claim to improve functionality, and workability in a sewing process and the like and the like. There is no mention of improving the handleability of the environment, etc., and no consideration is given to the state of stacking to take advantage of the characteristics of the kapok mixture.

JP-A-59-36757 Special Fair 6-79624 Gazette Japanese Unexamined Patent Publication No. 60-231855

In view of the problems of the prior art, the problem to be solved by the present invention is to use an environment-friendly inner cotton mixed with plant fiber kapok, without impairing the texture, and to handle the laminated inner cotton in a sewing process or the like. Is to provide.

As a result of diligent studies and experiments to solve this problem, the inventors of the present application have laminated a non-woven fabric on at least one side of a sheet-shaped inner wadding mixed with plant fiber kapok to obtain kapok in the sewing process. It was unexpectedly found that the effect of preventing falling off and scattering, and further preventing the blowout of cotton in the final product, was achieved, and the present invention was completed.

That is, the present invention is as follows.
[1] A laminated inner cotton formed by laminating a non-woven fabric on at least one side of a sheet-shaped inner cotton mixed with plant fiber kapok.
[2] The fibers constituting the non-woven fabric are cellulose fibers and / or synthetic fibers, and the non-woven fabric is adhered or entangled with the fibers by thermal, mechanical or chemical action. The laminated fabric according to the above [1], which is a non-woven fabric.
[3] basis weight of the nonwoven fabric is ^{10g / m 2 ~20g / m 2} , cotton during lamination according to [1] or [2].
[4] The sheet-shaped inner pad contains plant fiber kapok and synthetic fiber, and the mixing ratio of the plant fiber kapok is 0.1 wt% or more and 60 wt% or less, and the mixing ratio of the synthetic fiber is 40 wt% or more and 80 wt% or less. , and the and basis weight is ^{60g / m 2 ~180g / m 2} , cotton during lamination according to any one of [1] to [3].
[5] The laminated cotton according to any one of [1] to [4] above, wherein the sheet-shaped batting and the non-woven fabric are laminated by adhesion.

The laminated cotton according to the present invention is formed by laminating a non-woven fabric on a sheet-shaped cotton mixed with kapok by adhering or not adhering on both sides or one side thereof, so that the texture of the inner cotton is not impaired and the kapok during the sewing process is performed. It is possible to prevent the cotton from falling off and scatter, and improve the work environment and handleability.

It is a figure which shows typically one structure example of the laminated cotton of this embodiment. In addition, in FIG. 1, in order to make it easy to understand the components of the laminated cotton of the present embodiment, it is shown in a partially peeled state. It is an enlarged photograph of the cross section of the cotton during stacking.

Hereinafter, embodiments of the present invention will be described in detail.
The laminated cotton of the present embodiment is characterized in that a non-woven fabric is laminated on at least one side of a sheet-shaped cotton mixed with plant fiber kapok.
The inner cotton of this embodiment contains at least a part of kapok.
Kapok is a tree of the Panya family that grows widely mainly in Southeast Asia, and is widely cultivated for the purpose of utilizing the fiber (fluff) obtained from its seeds. Kapok, which is a natural plant fiber, is a plant fiber having a fiber length of about 2 mm to 7 mm and a small environmental load, and is characterized by being extremely light and dense, and having a high hollow structure with a hollow ratio of about 80%. It is a thing.

In the present specification, the term "middle cotton" is used by being inserted mainly between the outer material and the side material in clothing such as outerwear and ski wear, and bedding such as futons, cushions, pillows, and sleeping bags. Refers to the whole thing.
Further, the "sheet-shaped inner cotton" is a product in which fibers are laminated and spread in a sheet shape, and the fibers are appropriately bonded to form a cloth shape (nonwoven fabric shape). There are no restrictions on the means for bonding the fibers, such as chemical bonding with an adhesive resin, fusion by heating, and mechanical entanglement.

The inner cotton of the present embodiment preferably contains kapok fibers in a mixing ratio of 0.1 wt% or more and 60 wt% or less. If the mixing ratio of kapok fibers exceeds 60 wt%, the kapok fibers will fall off more often in the cotton products, which will worsen the working environment due to the scattering of the kapok fibers during sewing, and when wearing clothing products or washing. Due to the shedding of the Kapok fibers, the function of the wadding deteriorates and the appearance of the garment surface on which the wadding is sewn deteriorates. On the other hand, if the mixing ratio of the kapok fibers is less than 0.1 wt%, it becomes difficult to realize the effect of the present invention. The mixing ratio of the kapok fibers is more preferably 1.0 wt% or more and 55 wt% or less, and further preferably 10 wt% or more and 45 wt% or less.

In addition to the kapok fiber, synthetic fiber is mixed in the inner cotton of the present embodiment, and the mixing ratio is preferably 40 wt% or more and 80 wt% or less. If the mixing ratio is within this range, characteristics such as strength as wadding can be imparted without reducing the effect of kapok fiber, and it is excellent in bulkiness and washing durability, especially after dry cleaning. It can be suppressed and retain the required morphology. Examples of synthetic fibers include polyester (PE) fibers and polyamide fibers (nylon), but plant-derived polylactic acid fibers can be sung as eco-friendly products and are preferable.
In addition to synthetic fibers, as hygroscopic fibers, animal fibers such as wool, angora, and cashmere, natural fibers such as cotton and linen, and recycled cellulose fibers such as cupra ammonium rayon, biscous rayon, and solvent-spun cellulose fibers are cellulose. Fibers and the like may be mixed. In the present specification, the term "hygroscopic fiber" refers to a fiber having an official moisture content of 6% or more, such as natural plant fiber kapok, animal fiber, and cellulose fiber. The mixing ratio of the hygroscopic fibers including the kapok fiber is preferably 20 wt% or more and 60 wt% or less.

Cotton in the present embodiment is a sheet, its basis weight is preferably ^{60g / m 2 ~180g / m 2} . When the basis weight is within this range, the requirements such as the uniform fiber property of the kapok, the original form and thinness of the sheet-shaped cotton can be suitably satisfied. The basis weight is more preferably 60 g / m ² or more and 150 g / m ² or less.

The non-woven fabric of the present embodiment uses cellulose fibers such as rayon and cupra, and / or synthetic fibers such as polypropylene fibers, polyester fibers, polyamide fibers (nylon), and polylactic acid, and the fibers are thermally and mechanically used. Alternatively, it is a cloth-like material that is adhered or entwined by a chemical action.
The basis weight of the non-woven fabric ^{is preferably 10 g / m 2} or more and 20 g / m ² or less. If the basis weight is within this range, it is possible to achieve both a good texture and an effect of suppressing fiber dropout. In addition, the texture of the inner cotton is not impaired, and the occurrence of wrinkles due to lamination can be suppressed. The basis weight of the non-woven fabric is more preferably 10 g / m ² or more and 15 g / m ² or less.

Further, in the present specification, "lamination" means, for example, bonding by a method of spraying an acrylic emulsion resin on a cotton cloth or a non-woven fabric and then drying it, a method of bonding via a hot melt resin, or the like, or by needle punching each other. It includes a state in which the fibers are integrated by a method of entwining the fibers of the above, or a state in which the materials are overlapped and not integrated.

The laminated cotton of the present embodiment is obtained by laminating a non-woven fabric on both sides or one side of a sheet-shaped cotton mixed with Kapok, with or without adhesive.

Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples.
In the following examples, specific material names, numerical values, and the like are given for explanation, but the present invention is not limited to these examples.
As the official moisture content of each fiber, the value measured by the measuring method described in the general rules of the physical test method for JIS 0105 textile products was adopted.

(Example 1)
Kapok fiber (official moisture content of 6% or more) and polyester fiber (official moisture content of 0.4%) were laminated in a sheet shape at a weight mixing ratio of 40:60 to form a non-woven fabric with an average grain size of 90 g / m ² . Then, a non-woven fabric having a grain size of 10 g / m ^{2 made of 100% polyester was adhered with an acrylic emulsion resin to obtain wadding during lamination.}

(Example 2)
Kapok fibers and polyester fibers are laminated in the same manner sheetlike Example 1, mean and basis weight was I in formed 90 g / m ^2, similarly to the basis weight 15 g / m ² nonwoven fabric of 100% polyester of Example 1 Laminating was performed to obtain wadding during lamination.

(Example 3)
Kapok fibers and polyester fibers are laminated in a sheet shape in the same manner as in Example 1, and the inner ^{wadding formed with an average basis weight of 90 g / m 2} is sandwiched between 100% polyester and a non-woven fabric having a basis weight of 20 g / m ^{2 on both sides.} I got wadding during stacking.

(Example 4)
Kapok fibers and polyester fibers are laminated in a sheet shape in the same manner as in Example 1, and the inner ^{wadding formed with an average basis weight of 90 g / m 2} is sandwiched between 100% polyester and a non-woven fabric having a basis weight of 25 g / m ^{2 on both sides.} I got wadding during stacking.

(Example 5)
The laminated cotton was prepared in the same manner as in Example 3 except that the kapok fiber, the polyester fiber, and the cupra-ammonium rayon fiber (official moisture content: 11%) were used for the inner cotton at a weight mixing ratio of 40:40:20. Obtained.

(Example 6)
A laminated cotton was obtained in the same manner as in Example 3 except that the kapok fiber and the polyester fiber were used for the cotton in a weight mixture ratio of 50:50.

(Comparative Example 1)
The inner cotton obtained in the same manner as in Example 6 was used for evaluation without being laminated with the non-woven fabric.

The amount of fiber shed and the texture of the cotton in the laminated layers of Examples and Comparative Examples produced as described above were evaluated. The evaluation method was as follows.

(1) Amount of fibers dropped The amount of fibers dropped when the sheet-shaped inner cotton size of 20 cm × 20 cm was shaken up and down 100 times was sensory-evaluated according to the following evaluation criteria.
"◎": Almost no fiber loss is seen "○": Fiber loss is small "△": Fiber loss is not so noticeable "×": Fiber loss is noticeable.

(2) Texture The size of the sheet-shaped inner cotton was 20 cm × 20 cm, and the surface was touched and the texture was sensory-evaluated according to the following criteria.
"◎": Same as the texture when touching the inner cotton alone "○": No hardness is felt, and the texture difference with the inner cotton alone is extremely small "△": Although the inner cotton is slightly hard, the inner cotton alone There is little difference in texture with "x": The texture is hard.
In the above evaluation criteria, the evaluation of Δ or higher was judged to be good.
The evaluation results are shown in Table 1 below.

In the present invention, an environment-friendly inner cotton mixed with kapok is attached to a non-woven fabric on at least one side, or sandwiched between the non-woven fabrics, so that the fibers do not fall off or scatter and hinder workability in the cutting and sewing processes. Since it is a cotton cloth, it can be suitably used for, for example, winter clothing and bedding.

1 Laminated cotton 2 Non-woven fabric 3 Cotton member

Claims (5)

A laminated cotton made by laminating a non-woven fabric on at least one side of a sheet-shaped cotton mixed with plant fiber kapok. The fibers constituting the non-woven fabric are cellulose fibers and / or synthetic fibers, and the non-woven fabric is a non-woven fabric in which the fibers are adhered or entangled by thermal, mechanical or chemical action. A non-woven fabric according to claim 1. Basis weight of the nonwoven fabric is a ^{10g / m 2 ~20g / m 2} , cotton during lamination according to claim 1 or 2. The sheet-shaped inner pad contains plant fiber kapok and synthetic fiber, and the mixing ratio of the plant fiber kapok is 0.1 wt% or more and 60 wt% or less, and the mixing ratio of the synthetic fiber is 40 wt% or more and 80 wt% or less. and basis weight is ^{60g / m 2 ~180g / m 2} , cotton during lamination according to any one of claims 1-3. The laminated cotton according to any one of claims 1 to 4, wherein the sheet-shaped batting and the non-woven fabric are laminated by adhesion.

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