JPS6262948A - Secondary base cloth for carpet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a secondary base fabric for carpets that has good dimensional stability and particularly less elasticity after being laid on the floor.

[Conventional technology]

Conventional tufted carpets are made by driving piles into a primary base fabric of jute or polyolefin-based synthetic fibers by tufting, etc., then applying latex, etc., and laminating them.
Furthermore, they are mainly manufactured by backing with a secondary base fabric if necessary.

Jute is the main material used for the secondary base fabric of such tufted carpets, but since it is a natural fiber, its production is currently relatively low, which makes the supply unstable and the price low. Since it cannot always be said that it is cheap, it is desirable to switch to other materials.

Therefore, synthetic resin fibers are used instead of natural fibers such as jute, and these fibers are made of polyolefin. For example,
In the Mei 8m book of No. 92, several examples of secondary base fabrics using such polyolefin ribbons are shown.

In particular, the application of Japanese Patent Publication No. 60-4292 is based on the fact that secondary base fabrics woven with conventional fibrillar olefin yarns have poor conjugation properties, and that polyolefin materials treated to improve this poor fabric strength have poor fabric strength. This eliminates the drawback that it is not acceptable from an aesthetic point of view.

In other words, the aim is to obtain a product that has the desired fibrous quality, has a fluffy, hair-like appearance, and maintains sufficiently high strength. The method involves weaving fibers using a woven fabric, and then raising the ends of the fibrils on the surface of the fabric.

[Problem that the invention seeks to solve]

However, as mentioned above, the secondary base fabric made of polyolefin synthetic fibers has an elongation particularly in the vertical direction of 30% or more (at break), which is too large, and therefore lacks stability when laminated as a carpet. In other words, when a tufted carpet lined with the base fabric is completely installed inside a building, it becomes loose and difficult to use.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the disadvantages of the conventional examples and to provide a secondary base fabric for carpets that has good dimensional stability and particularly has low elasticity after carpet construction.

[Means for solving problems]

In order to achieve the above object, the gist of the present invention is that filaments, split yarns, or flat yarns having an elongation at tensile breakage of 15% or less are used for at least one of the warp yarn elements and the weft yarn elements, and are woven. It is something.

Note that polyolefin filaments are used as filaments having a tensile elongation at break of 15% or less. This polyolefin includes homopolymers such as ethylene, propylene, 1-butene, 1-pentene, 1-hexene, and 4-methyl-1-pentene, or combinations of these and olefins.
Copolymers of more than one species can be mentioned. - Among these, polypropylene or a copolymer mainly composed of propylene is preferred.

To obtain a low elongation yarn with a tensile elongation at break of 15% or less,
It is necessary to increase the drawing ratio of filament, split yarn or flat yarn, preferably 1
It is 0 times or more, more preferably 11 to 12 times.

The specially processed low elongation yarn drawn at a high magnification is woven into a plain weave or kalami weave structure as a secondary base fabric according to the present invention. Plain weave is preferable.

[Effect]

According to the present invention, the strength and elongation characteristics of the synthetic fiber base fabric used as the secondary base fabric of tufted carpet can be made close to that of jute, a natural fiber, and dimensional stability is ensured when backing is applied to the carpet. can.

〔Example〕

Next, examples of the present invention will be specifically described.

In Examples 1 to 3 below, secondary base fabrics for carpets as shown in Table 1 were woven using polypropylene filaments [manufactured by Wako Kasei Co., Ltd., Palflex Yarn (trade name)] and polypropylene sprint yarns. The elongation of each woven fabric was determined using the synthetic fiber filament yarn test method (JIS
L-1073), and the results are shown in Table 1.

In addition, in order to compare the product of the present invention with the conventional product, the elongation was similarly measured for a secondary carpet fabric made of commercially available polypropylene yarn and for reference, a secondary carpet fabric made of jute (9 oz.). The results are also listed in Table 1.

As can be seen from Table 1 above, the product of the present invention, which uses yarn specially processed to obtain a low elongation yarn in the warp yarn, can also be used as a secondary base fabric when laminated to a carpet. It can be seen that it is possible to obtain a product with a vertical elongation and low elongation, which is between that of conventional synthetic fiber products and those of conventional synthetic fiber products.

〔Effect of the invention〕

As described above, the secondary carpet base fabric of the present invention is a base fabric made of synthetic fibers that has good dimensional stability, particularly has elasticity and less sagging after carpet construction.

Claims (1)

[Claims] A secondary base fabric for a carpet, characterized in that it is woven using filaments, split yarns, or flat yarns having an elongation at tensile breakage of 15% or less for at least one of the warp yarn elements and the weft yarn elements.