JPH0616745Y2 - Cottony complex - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of Industrial Application The present invention relates to a cotton-like composite material used for filling the inside of clothes, gloves, hats, beddings, bags and the like.

(2) Prior art and problems When a cotton-like sheet such as a short fiber web is used as a filling material for a fiber product, a shift is often generated from the initial filling position during use, so that it is flexible. Film or
It has been attempted in the past to bond the sheet to a cotton-like sheet for use as a film / cotton composite. However, satisfying both the heat retention property and the moisture permeability was not satisfactory in the film / cotton composite material.

(3) Means and Actions for Solving Problems The above cotton-like sheet has an apparent density of 3 × 10 ^{−3 to} 50 ×.
It is lightweight and bulky with a weight of 10 ^-3 g / cm ³ , a basis weight of 15 to 200 g / m ² , and a tensile strength of 0.1 to ² kg / 3 cm. Therefore, there is an attempt to adopt a polyethylene film as a film from the viewpoint of flexibility,
The problem that polyethylene is low in elongation at low tension does not match the cotton-like material and imparts moisture permeability has not been solved.

The present inventor found that a result of various studies, in hand the film, lightly if you enlarger, there is elongation of at least 400%, and in order to retain 500g / m ² / 24hr or more moisture permeability, A method of evaporating a solvent from a solution to form a film from a polymer substance that is pre-existing in the solution (hereinafter,
Based on the idea that it may be appropriate to make this film forming method by the dry film forming method), the soft urethane film, which will be explored and described in detail below, is suitable as the film to be composite-bonded to the above cotton-like material. I found that.

Suitable urethane resins for this invention include polyamino acids, which are polymers of amino acids such as glutamic acid, alanine, and aspartic acid, and amino acids obtained by reacting diisocyanate with a low-polymerization ester formed from dicarboxylic acid and glycol. -Urethane copolymer: Polyether urethane containing polyethylene oxide, which is a reaction product of diisocyanate and diol; and siloxane-modified polyether urethane containing polydialkylsiloxane component.

(4) Summary of the Invention Therefore, the urethane film used in this invention is prepared by using the above-mentioned urethane resin solution (hereinafter referred to as paint), for example,
In order to form a film by casting on a release paper and evaporating and removing the solvent, that is, to form a film by a dry film forming method, to form a composite, a transfer method of transferring the film to a cotton-like sheet can be adopted.

The thickness of the urethane film may be usually 3 to 40 μ, preferably 5 to 20 μ. Further, other components such as a colorant and a filler can be mixed if necessary.

Further, in order to improve the adhesion between the film and the cotton-like sheet, an adhesive layer is provided in the middle by using a urethane resin of the same system as the film.

That is, to make a cotton-like sheet / adhesive / film construction, the adhesive / film is made on the release paper.

In this case, the film coating amount should be 3
0 to 200 g / m ² , viscosity is 1000 to 10000 c
Ps / 20 ° C is preferred. Adhesive coating amount is 10 to 200 g / m ² , viscosity is 1000 to 10000 cps
/ 20 ° C is desirable.

The outline of the conditions for making the double film of adhesive / film is as follows. First, the film coating is applied on the release paper, dried, and then the adhesive coating is applied on the film.
Press the cotton-like sheet in the dry or undried state. Usually, the drying temperature is preferably 60 to 130 ° C.

(5) Examples and Comparative Examples Example-1 As a film paint, polyether urethane (US,
Solar Tech Laboratories, each product BION-I
100 parts of I UN1139, viscosity 40000 cps / 20 ° C., concentration 25%) was diluted with 35 parts of dimethylformamide to a viscosity of 4000 cps / 20 ° C.
A coating amount of 60 g / m ^{2 was} coated on a release paper and dried at 100 ° C. to obtain a film having a thickness of 15 μm. Next, as an adhesive coating, a polyether-based crosslinkable urethane (Seiko Kasei Co., Ltd., Luck Skin UD102, viscosity 40,000 cp)
s / 20 ° C., concentration 50%) 100 parts, crosslinking agent 10 parts, accelerator 2 parts, toluene 40 parts, the viscosity of which is 500
What was made 0 cps / 20 ° C was applied onto the film with a coating amount of 70
g / m ^{2 was} applied and dried at 80 ° C. to obtain an adhesive layer having a thickness of 20 μm. On top of that, a cotton-like sheet of polyester fiber (apparent density 6 × 10 ⁻³ g / cm ³ , basis weight 35 g /
m ² and a tensile strength of 0.5 kg / 3 cm) were crimped. Then, after aging at 60 ° C. for 24 hours, the product after release was peeled off to obtain a composite of a cotton-like sheet / urethane film.

Example-2 The film coating composition used in Example-1 was further diluted with dimethylformamide to a viscosity of 2000 cps / 20 ° C. and applied on a release paper at a coating amount of 50 g / m ² and dried to a thickness. A film having a size of 10 μm was obtained. Then same Example-1
The adhesive paint used in step 20 was applied in dots on the film.
m ² applied, and a cotton-like sheet made of polyester fiber (apparent density 15 × 10 ⁻³ g / cm ³ , basis weight 40 g)
/ M ² and tensile strength 0.7kg / 3cm)
It peeled and the composite was obtained.

Example-3 By the same operation as in Example-1, a double layer of a film / adhesive was formed on a release paper, and a cotton-like sheet (apparent density) made of polyester fiber and aluminum vapor-deposited on one side thereof was formed thereon. 5
x10 ^-3 g / cm ³ , basis weight 60 g / m ² , tensile strength 1.
5 kg / 3 cm) was laminated with the aluminum vapor deposition surface facing outward. After aging at room temperature for 48 hours, the release paper was peeled off to obtain a composite.

Comparative Example Using polyethylene having a thickness of 15 μ as a film, a methyl ethyl ketone solution of an ester resin (concentration: 30%) was applied as an adhesive at 50 g / m ² , dried at 80 ° C., and then processed in the same manner as in Example-3. Then, a cotton-like sheet vapor-deposited with aluminum was attached to obtain a composite.

Next, the results and the like obtained in the above Examples and Comparative Examples are shown in a table. The test method and units are as follows.

Breathable: JIS-Z-0208, g / m 2 / 24hr water resistance: conforms to JIS-L-1092 (A) .

mm. Thickness: micron (μ) Unit weight: g / m ² (JIS-L-1006) Apparent density: x10 ^-3 g / cm ³ (JIS-L-1001) Tensile strength: kg / 30 cm (JIS-K-6722) ) (6) Effect of the invention In the composite of the invention, since the special urethane resin film and the cotton-like sheet are joined together, the water resistance and heat insulation of the cotton-like sheet are enhanced, and moisture permeability is imparted to the composite to make the clothes. Eliminates the discomfort of "stuffiness" due to sweating when used as a filling agent.

Since the composite body of the present invention is extremely flexible, it maintains a proper texture without impairing the softness of the cotton-like sheet, and the handling in the sewing work is improved.

[Brief description of drawings]

FIG. 1 shows a cross section of a composite body according to the present invention. still,
Reference numeral 1 is a urethane film, 2 is a urethane adhesive layer, and 3 is a cotton-like sheet.

Claims (3)

[Scope of utility model registration request] 1. A made of cotton sheet and the soft urethane resin bonded encompassing flocculent complex film,該綿sheet has an apparent density of 3x10 ^-3 ~50x10 ^-3
g / cm ³ , weight per unit weight of 15 to 200 g / m ² , tensile strength of 0.1 to ² kg / 3 cm width, the soft urethane resin film is a double layer including an adhesive layer, and is made from the solution in a dry process. made by film method, there is breathable elongation over 400% of the film, as flocculent complex, filling material in the textile moisture permeability and having a higher 500g / m ² / 24hr. 2. The filling material for a fiber product including the cotton-like composite according to claim 1, wherein the cotton-like sheet is a polyester short fiber web. 3. The registration sheet according to claim 1, wherein the cotton-like sheet is vapor-deposited with metal on one surface thereof, and the soft urethane resin film is attached to the other surface thereof. Filling materials for textile products including cotton-like composites.