JPS62127017A - Production of cut pile 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 Field of Application) The present invention relates to a method for manufacturing a cut pile carpet/curve which has excellent durability and can maintain its initial appearance.

(Prior art) Conventionally, twisted pile yarns for cut pile carpets have been untwisted with saturated steam using an autoclave method or a continuous heat cent method, but with only such a set, it is difficult to use the yarn after it has been made into a carpet. During use, the pile gradually unraveled and fuzzed, making it difficult to maintain the initial pencil point property (the bundled state of the pile threads), resulting in a significant deterioration of the appearance of the car vent.

(Problems to be Solved by the Invention) The present invention solves these conventional drawbacks, prevents pile unraveling and fluffing of canted pile carpets, and provides excellent durability that can maintain the initial appearance. The purpose of this method is to obtain a cut pile carpet.

(Means for Solving the Problems) The present invention has the following configuration to achieve the above object. In other words, two aspects of the present invention are as follows: (1) When manufacturing canted pile carpets by tufting or weaving, the heat melting temperature is 8
Tufting or weaving using a plied heat-treated system obtained by combining heat-adhesive synthetic fiber filaments of 0 to 150°C, ply-twisting them, and then heat-treating them at a temperature higher than the melting temperature of the filaments, as a pile yarn. A method for manufacturing a cut pile carpet characterized by carrying out the following steps and [(2) When manufacturing a cut pile carpet by tufting or weaving, at least one of the plurality of synthetic fiber threads is combusted when each of the plurality of synthetic fiber threads is burnt. One part is combined with a heat-adhesive synthetic fiber filament having a heat melting temperature of 80 to 150°C and subjected to pre-twisting, and the third part is combined and ply-twisted.

A method for producing a cut-pile carpet, which comprises then performing tufting or weaving using a plied heat-treated system obtained by heat-treating the heat-adhesive synthetic fiber filament at a temperature higher than the melting temperature as a pile yarn. The main points are as follows.

The present invention will be explained in detail below.

The synthetic fiber yarn used in the present invention is nylon.

It means a crimped bulky yarn obtained by crimping a multifilament made of fibers such as polyester 9 polyacrylonitrile or polypropylene, or a spun yarn produced from these fibers through staple fibers. As the former crimped bulky yarn, it is also possible to use crimped bulky yarn processed by a false twisting method, a gear processing method, a rubbing method, or the like.

Generally, yarns using a heated compressed fluid processing method called BCF processing are used as good carpet yarns.

The latter type of spun yarn is generally made by spinning staple fibers, which are crimped using a stuffing box or the like and then cut into a certain length, using a conventional method to obtain carpet yarn. Used for carpets.

In the present invention, the thermal adhesive fiber has a melting temperature of 80 to 1
A heat-adhesive synthetic fiber filament (hereinafter simply referred to as heat-adhesive thread) at 50° C. is used. This is 1 nylon 6.6
It is a fiber obtained from a copolymer of 6.12 or a low melting point polyester.

Specific products currently available include nylon-based "Flor M" (Unitika registered trademark) and polyester-based "Melty" (Unitika registered trademark). The thickness used is about 50-100d.

In the present invention, a pile yarn for cut pile carpet is manufactured by the following method using the above-mentioned synthetic fiber yarn and heat-adhesive yarn.

First, a plurality of synthetic fiber threads are individually pre-twisted, and then they are twisted together in the opposite direction. Put them together and give them a final twist. According to another method, when a plurality of synthetic fiber yarns are individually pre-combusted, at least one of the yarns is combined with the above-mentioned heat-adhesive yarn and pre-combustion is applied to the plurality of yarns. The strips may be combined and twisted in the opposite direction.

The number of synthetic fiber threads used is usually 2 to 3 pieces, each of which is underburned, but if the threads are thin, 4 pieces are used.
There is no problem in using more than the book. Further, from the viewpoint of the feel of the carpet, it is preferable to use a heat-adhesive yarn having a thickness equivalent to 1 to 10% of the pile yarn. If the material of the heat-adhesive thread is matched to the material of the pile thread used, it will be dyed in the same color, which is advantageous in terms of dyeability. The appropriate number of twists is about 100 to 200 twists/m for both top twist and bottom twist.

Next, in the present invention, the obtained twisted yarn is heat-treated at a temperature higher than the thermal melting temperature of the thermal adhesive yarn to melt the thermal adhesive yarn and attach it to the synthetic fiber yarn.

A plied heat treatment system is obtained. The heat treatment may be dry heat or warm heat, but in the case of warm heat treatment, the melting point is slightly lower than that during dry heat treatment, so the temperature and time for thermal bonding should be appropriately selected at a slightly lower temperature than in the case of dry heat treatment.

Using the plied heat-treated system obtained as described above as a pile yarn, 1 form a cut pile using a commonly used tufting machine or loom to obtain the cut pile carpet of the present invention having excellent durability. can.

(Function) The pile yarn of the cut pile carpet used in the present invention is
The plied yarn obtained by using the heat-adhesive yarn in combination with the plied yarn during plying or ply-twisting is heat-treated to melt the heat-adhesive yarn. In the cut pile carpet of the present invention using such a plied heat treatment system as the pie yarn, the twist of the pile yarn is fixed by thermal fusion of the thermal adhesive yarn.
The pile threads are difficult to separate, and the ends will not come apart.

Therefore, the appearance of the carpet immediately after manufacture can be maintained indefinitely.

By the way, regarding the conventional cant pile carpet,
The form immediately after production is almost the same as the form of the cut pile carpet of the present invention, but as it is put into practical use, the twists of the twin threads, triple threads, etc. of the pile threads become untwisted, and then the tip of each thread becomes untwisted. It also begins to fall apart, and as it continues to be used, it becomes felt.

(Example) Next, the present invention will be explained in more detail with reference to Examples. The surface condition, durability, etc. of the carpet in the Examples were measured and evaluated by the following methods.

(11) As a surface condition test, 27 cycles were carried out, with one cycle consisting of 200 steps on the surface of the carpet with golf spikes and 30 times in each of four directions with a vacuum cleaner. (Assuming that the car vent is vacuumed four times, this corresponds to about two years.) The surface condition of the car vent before and after this durability test was visually judged and compared.

(2) Wear reduction rate JIS-L-1021 tapered abrasion tester
The weight I:$i fraction of the worn part after 10,000 rubbings was measured.

(31H Thickness Reduction Rate The rate of decrease in thickness after 10,000 beatings was measured using a rotary dynamic loading tester using the JIS-L-1021A method.

(4) Compressibility and compressive modulus Measured using a self-recording constant speed extension tester according to JIS-L-1021B method.

Example 1 A nylon BCF of 1000 denier 48 filament is twisted with 140 T/M in the Z direction, and then the two threads are put together and twisted with 140 T/M in the S direction to make it 2000 denier. When making a plied yarn, the melting point is 10
One 100 denier 12 filament of 0° C. nylon heat-adhesive yarn (Flor M) was added and twisted to obtain a plied yarn. This plied yarn was heated at 130° C. for 1 minute to fuse the heat-adhesive yarn to obtain a plied heat-treated system to be used as a pile yarn for the cut pile carpet of the present invention.

Next, the above plied heat treatment system was used for pile yarn.

Using a tufting machine, a Saxony 8-turn carpet (cut pile carpet of the present invention) having a cut pile carpet standard of 1/8G, a pile length of 13 inches, a stitch of 16/l, and a mesh size of 1000 g/m was manufactured.

For comparison with the present invention, a cut pile carpet for comparison was produced in exactly the same manner as in this example except that the heat-adhesive yarn was cut off.

The performance of both cut pile carpets was measured and evaluated, and the results are shown in Table 1.

Table 1 p＼゛.

In contrast, the cut pile carpet of the present invention did not have any pile unraveling or fuzz even after more than two years of durability tests, and its initial appearance was was maintained. In addition, the cut pile carpet according to the present invention had better abrasion reduction rate and thickness reduction rate due to dynamic loading, and the compressive modulus of elasticity was also better than that of conventional carpets. .

(Effect of the invention) Cant pile carpet produced by the method of the present invention.

The plied yarn, which is obtained by using heat-adhesive yarn in combination with the plied yarn during underburning or final twisting as a pile yarn, is heat-treated to melt the heat-adhesive yarn! It is characterized by the fact that it uses a twisting and ripening heat treatment system.

According to the present invention, it is possible to obtain a cant pile carpet in which the pencil point remains clear even after long-term use without causing pile unraveling or fluffing.

Claims (2)

[Claims] (1) When producing cut pile carpet by tufting or weaving, the heat melting temperature is 80 to 1
Tufting or weaving is performed using a plied heat-treated system obtained by combining heat-adhesive synthetic fiber filaments at 50°C, ply-twisting them, and then heat-treating them at a temperature higher than the melting temperature of the filaments as a pile yarn. A method for manufacturing a cut pile carpet characterized by the following. (2) When manufacturing a cut pile carpet by tufting or weaving, at least one of the plurality of synthetic fiber yarns is made of heat-adhesive synthetic fibers with a heat melting temperature of 80 to 150°C. The filaments are combined and pre-twisted, then they are combined and twisted, and then heat treated at a temperature higher than the melting temperature of the heat-adhesive synthetic fiber filament, resulting in a pile yarn. A method for producing a cut pile carpet, characterized in that tufting or weaving is performed using a cut pile carpet.