JPH06171032A - Laminate for paraglider - Google Patents

Abstract

PURPOSE:To provide laminate for paraglider having high weatherability by a method wherein defects in weatherability of paraglider, hangglider or the like are intended to be eliminated. CONSTITUTION:In the laminate prepared by bonding biaxially oriented film and cloth to each other with adhesive, the adhesive is polyurethane composition, 50-100wt.% of the diol component constituting which is polycarbonate glycol.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paraglider laminate for use in paragliders, ultralight gliders, hang gliders and the like.

[0002]

2. Description of the Related Art Generally, paragliders, hang gliders, and the like have recently gained explosive popularity as sky sports in that they can fly relatively easily and satisfy human desires to fly in the sky. The first characteristic required for paragliders and hang gliders is safety. There are various factors that influence safety, but it is important that the base fabric has sew-on strength, tear strength, and non-uniform breathability. Currently used paragliders, hang gliders, etc. have problems with this weather resistance, and improvements are required. The inventors of the present invention have studied the above problems, and have arrived at the present invention by finding out that the problem of weather resistance is a great problem in the adhesive composition.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the drawback of weather resistance of paragliders, hang gliders and the like, and to provide a laminated body for paraglider having high weather resistance.

[0004]

That is, according to the present invention, "(Claim 1) A laminate obtained by adhering a biaxially stretched film and a cloth with an adhesive, wherein the adhesive is a polyurethane composition, and the diol constituting the polyurethane composition. A laminate for a paraglider, characterized in that 50 to 100% by weight of the component is polycarbonate glycol. "

Here, the cloth includes a woven fabric, a knitted fabric, a scrim, a net-like product, a non-woven fabric and the like. Materials that make up the fabric include thermoplastic synthetic fibers, aromatic polyamide fibers, natural fibers,
Metal fibers, metal compound fibers, inorganic fibers and the like can be used. Considering various physical properties such as lightness, low elongation, low hygroscopicity and durability required for the laminate, thermoplastic synthetic fiber is preferable. For example, when the cloth is a woven fabric, fibers having a total fineness of 10 to 100 denier and a single yarn fineness of 0.5 to 20 denier can be used. The basis weight of the woven fabric is preferably 10 to 80 g / m ² .

The biaxially stretched film is obtained by biaxially stretching a thermoplastic film made of polyester, polyamide, polypropylene, polyethylene, acrylic ester, vinyl chloride, vinylidene chloride or the like. Considering various physical properties such as lightness, low elongation and durability required for the laminate, it is preferable to use a film having a thickness of 5 to 15 μm. The thickness of the conventional film is often in the range of 10 to 50 μ, but in the present invention, since the adhesive performance is excellent, high durability can be maintained even if the thickness of the film is reduced. . The laminated body may be one in which a film is laminated on one side of a cloth.

The adhesive is a polyurethane composition and contains 50 to 100 of the diol components constituting the polyurethane composition.
Weight percent is polycarbonate glycol. If the amount of polycarbonate glycol is less than 50% by weight, the weather resistance of the film and resin will be poor. If the polycarbonate glycol exceeds 100% by weight, the adhesion durability will be poor.
The average molecular weight of polycarbonate glycol is 1000-
A range of 3000 is preferred. When the average molecular weight is less than 1000, there is a problem in weather resistance. If the average molecular weight exceeds 3,000, the adhesive strength required for practical use cannot be obtained. As diol components other than polycarbonate glycol, ethylene glycol, 1,4 butanediol, 1,6 hexanediol, neopentyl glycol and the like can be used.

As the diisocyanate constituting the polyurethane composition, non-yellowing type diisocyanate is preferable. For example, isophorone diisocyanate, 1,6 hexamethylene diisocyanate, diphenyl hydroxide diisocyanate and the like can be used.

[0009]

The laminate for paraglider of the present invention is lightweight and has high weather resistance.

The method for manufacturing the paraglider laminate of the present invention will be described below with reference to examples. The evaluation methods in the examples were according to the following methods. <Adhesive force after high temperature and high humidity> Adhesive force after 30 minutes under conditions of 70 ° C. and 90% RH (relative humidity). <S. W. M. Breathability after exposure> S. W. M. Is Sun
Abbreviation for thin Weather Meter Exposure conditions: Black Panel 63 ± 2 ° C Sh
Yes Yes Follows the method of JIS-D-0205. <Test method in Table 3> The air permeability was measured after hand fir was applied 20 times while the film surfaces of the laminate were matched.

[0011]

Example 1 Various polyurethane compositions were produced as follows. First, the component composition of the polyurethane composition is as follows. Polydiol having an average molecular weight of 2000 200.0 g 1,4 butanediol 9.0 g Isophorone diisocyanate 39.96 g 1,6 hexamethylene diisocyanate 3.36 g Toluene 189.24 g Methyl ethyl ketone (MEK) 189.24 g First, under a nitrogen atmosphere, toluene, 1, 4 butanediol,
After mixing the polydiol having an average molecular weight of 2000, 80
The temperature was raised to ℃, added isophorone diisocyanate to 110 ℃, heated to 110 ℃ for 4 to 6 hours, then added 1,6 hexamethylene diisocyanate and further heated to 110 ℃ for 4 to 6 hours. Then, the temperature is lowered, and 7
When the temperature was lowered to 0 ° C, MEK was added to obtain a polyurethane composition. Table 1 shows the properties of the various polyurethane compositions obtained.

Next, hexamethylene diisocyanate-based trifunctional isocyanate (Coronate HL,
Nippon Polyurethane Co., Ltd. was used, and this was blended in an amount of 3% by weight with respect to the above various polyurethane compositions to prepare an adhesive. Next, each adhesive was applied to a 6μ thick biaxially oriented polyethylene phthalate film with a comma doctor to a thickness of 10μ, dried by heating at 130 ° C for 1 minute, and then bonded to a polyester woven fabric at a temperature of 130 ° C and a linear pressure of 3 .0
A speed of 15 m / min. with a nip roller of kg / cm. Crimped with. The adhesive performance of the obtained laminate is as shown in Table 2.

[0013]

Comparative Example 1 The procedure of Example 1 was repeated except that the polyurethane composition PA-4 was used in Example 1 and the thickness of the biaxially stretched polyethylene phthalate film was changed within the range of 5 to 50 μm as shown in Table 3. .

[0014]

[Table 1]

[0015]

[Table 2]

[0016]

[Table 3]

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Claims (1)

[Claims] 1. A laminate obtained by adhering a biaxially stretched film and a cloth with an adhesive, wherein the adhesive is a polyurethane composition, and 50 to 100% by weight of a diol component constituting the polyurethane composition is a polycarbonate glycol. A laminated body for a paraglider characterized by the following.