JPS5928015Y2 - Adhesive interlining - Google Patents

Description

[Detailed description of the invention] Copolymer polyamide adhesives are used in the field of fully adhesive interlinings that require high adhesive strength and dry cleaning resistance, such as front cores for men's and women's clothing.

However, copolyamides have drawbacks such as low adhesion to polyester synthetic fibers and easy peeling when washed with hot water.

Recently, a copolymerized polyester adhesive has been developed and has attracted attention as an adhesive that completely improves the drawbacks of the above-mentioned copolyamide adhesive.

However, on the contrary, copolymerized polyester has extremely poor dry cleaning resistance.

Thus, the inventors of the present invention attempted to improve the drawbacks of both copolyamides and copolyester adhesives by mixing them together.

That is, by conventional methods, (1) tri-blending a copolymerized polyester powder and a copolymerized polyamide powder to form powder dots, and (2) forming a melt blend of a copolymerized polyester and a copolymerized polyamide into a powder as a powder dot or a network as a filament. Dry cleaning properties and resistance to hot water washing were investigated, but satisfactory performance could not be obtained with these methods.

The present invention was made with the purpose of eliminating these drawbacks, and its gist is that two components, continuous filaments of copolyester and continuous filaments of copolyamide, are applied to at least one side of a fabric, nonwoven fabric, paper, etc. It is characterized by being arranged independently and randomly.

An embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, a continuous copolyester filament 1 and a continuous copolyamide filament 2 are formed on one side of a base fabric 3 made of woven fabric, nonwoven fabric, paper, etc. and are arranged independently and randomly in a filament blend state.

FIG. 2 is a cut side view of the interlining in FIG. 1, and to be more precise, the adhesive layers 1 and 2 are partially impregnated into the base fabric 3.

The adhesive interlining of the present invention is produced by a method in which a copolymerized polyester and a copolymerized polyamide are each discharged from a spinneret having a large number of spinning holes, the filaments are captured by an air stream, and then each is accumulated in a net shape on a base fabric. The copolyamide in the present invention is nylon 6/12.
6/66/12.6/66/610/12 are binary or ternary or more copolyamides, and copolyesters include dicarboxylic acids such as terephthalic acid and isophthalic acid, ethylene glycol, and 1.4- It is an aromatic saturated polyester copolymer composed of a diol such as butanediol, more preferably a polyether diol such as poly(tetramethylene oxide) glycol.

The ratio of copolymerized polyester and copolymerized polyamide to be used can be arbitrarily changed depending on the intended use and performance by changing the diameter of the filament or by changing the arrangement density of the system per unit area.

The present invention is constructed as described above, and can be used for men's clothing,
When used as a permanent adhesive for women's clothing, children's clothing, etc.
If the interlining fabric of the present invention is cut into the desired shape on the part to be pasted and then heated and pressed using a hot press machine or iron, the copolymerized polyester and copolymerized polyamide placed on the interlining base fabric will become almost independent. As an adhesive (not a molten mixture), it melts and strongly bonds the two.

As is clear from the structure of the present invention, the copolymerized polyester and copolymerized polyamide do not become a melt compound, but form independent bonding parts, resulting in excellent resistance to hot water washing and dry cleaning. Demonstrate performance.

In other words, even if the copolyamide adhesive part peels off during hot water washing or the copolymer polyester adhesive part partially peels off during dry cleaning, it will remain strong because the other adjoining adhesive has water and solvent resistance. It exhibits excellent adhesive strength and does not peel off at all as an adhesive core.

In addition, this adhesive interlining has a good texture because the adhesive part is rich in voids, and high performance can be obtained at an economical cost.

As mentioned above, the present invention provides an ideal interlining that has excellent practical effects that cannot be expected with the current adhesive interlining.

Examples Block polyether ester (polybutylene terephthalate/polybutylene isophthalate/polytetramethylene oxide glycol (m
, p, 121℃ east polyester elastomer F-2
200) Nylon 6/66/610/12 (m, p, 117°C East GOL832) pellets were selected as the copolymerized polyamide, each of which was introduced into an extruder heated to 260°C, and co-produced using jet spinning technology. A cobweb-shaped mat was prepared so that the weight ratio of polymerized polyester and copolymerized polyamide was 50:50.

This spiderweb-like web was sandwiched between two sheets of polyester/cotton blend-broadcloth with a basis weight of 20cm/TrL2 and heated at 150°C and 300r/cIft for 10 minutes.
Press bonded for seconds.

The adhered base fabric was then washed with hot water and then subjected to a wash resistance test under dry cleaning conditions. Table 1 shows the results of changes in adhesive strength.

Resistance to hot water washing: The bonded base fabric was washed 5 times for 10 minutes in a bath at 70° C. with a detergent concentration of 0.3 or more and a bath ratio of 1:50, and changes in adhesive strength were observed.

Dry cleaning resistance: Using a wash cylinder, the adhered base fabric was washed twice at room temperature for 30 minutes under agitation in perchloromethane and dried, and changes in adhesive strength were observed.

Comparative Examples 1 to 5 Similar tests were conducted using each of the copolymerized polyester and copolymerized polyamide used in the Examples as a spider web (Comparative Examples 1.2).

In addition, copolymerized polyester pellets and copolymerized polyamide pellets were triblended at a weight ratio of 50:50, and this was jet-spun from an extruder and subjected to a test as a web of similar blended polymers (Comparative Example 3
).

Further, the copolymerized polyester, copolyamide and their melt blend (50:50) pellets were cooled with liquid nitrogen to obtain a powder of 60 to 125 meshes.

Powders from a powder blend and a molten blend were each coated with a dotting machine to a basis weight of 20 cm/m2, and similar tests were conducted (Comparative Example 4).
．． 5).

These results are shown in the table.

[Brief explanation of the drawing]

FIG. 1 is a plan view illustrating the structure of the adhesive interlining according to the present invention. FIG. 2 is a cutaway side view of FIG. 1. 1...Copolymerized polyester filament, 2.
...Copolymerized polyamide filament, 3...
・Interlining base fabric

Claims (1)

[Scope of utility model registration request] An adhesive layer composed of two independent components, continuous filaments of copolymerized polyester and continuous filaments of copolymerized polyamide, is randomly arranged on at least one side of a base fabric selected from woven fabric, nonwoven fabric, paper, etc. Made of adhesive interlining.