JPH0197229A - Extensible schenile yarn - Google Patents

Abstract

PURPOSE: To obtain the subject stretchable chenille yarn that can improve crude and hard texture of chenille woven fabric with its increased wearablility by using a stretchable covered elastic yarn as a press yarn for holding the flower yarn and arranging hot-melting yarn for giving elasticity to the fabric. CONSTITUTION: The flower yarn (preferably comprising a spun yarn or filament yarn including >=25 wt.% of filaments having a filament fineness of 1.5 denier) is held with the press yarn of a stretchable and covered elastic yarn and a hot-melting filament is arranged to both or one of the press yarns so that the flower yarn may be fixed by fusing whereby the objective yarn is obtained. The elastic yarn has preferably at least 500% elongation at break, and >=90% of high elastic recovery.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to chenille yarn.

More specifically, elasticity is imparted to the presser thread by using an elastic thread to improve the roughness and wearability of chenille woven and knitted fabrics, and it is also preferably applied to all kinds of industrial material applications such as furniture and construction sheets. This relates to stretchable chenille yarn.

[Conventional technology] Conventionally, the following chenille yarns have been proposed:

■ Single fiber fineness is 0.5 to 1.0 denier and number of crimps is 5.
A filament whose filament is a spun yarn containing 30% or more of acrylic composite fibers having micro crimps of 0 to 200 strands/in (Utility Model Publication No. 59-2143).

■ The presser yarn is spun yarn mainly composed of ultrafine fibers with a single filament fineness of 0.9 denier or less (Special Publication No. 61-434
Publication No. 53).

[Problems to be Solved by the Invention] However, in the conventional chenille yarn, the filaments are 1.
Single fiber fineness of 0 denier or less and crimp count of 50 to 2
Since it is composed of yarn made of micro-crimps of 0.00 strands/in, it has a soft and flexible texture and is easy to pass through during the weaving or knitting process, even if it is a fairly round chenille with a high fluff density. There were disadvantages in that the threads were defective, causing the threads to get caught on the guide and breakage on the way, and the obtained secondary products did not necessarily have an aesthetic appearance.

Furthermore, since the presser yarn is made of ultrafine fibers with a single fineness of 0.9 denier or less, 80/2 to 30/2S spun yarn using sea-island composite fibers is used, so the presser yarn and filament stages are After ultra-fine processing, it is easy to handle, and there are many thread breaks during chenille processing. Furthermore, if the microfine treatment is performed after making a chenille woven or knitted fabric, there are drawbacks such as a large number of filament fibers falling off.

In other words, the biggest drawbacks of conventional chenille yarns are the difficulty in handling the filaments in terms of wash resistance, and the rod-like stiffness and non-stretchability due to the overall thickness of the filaments and the presser yarns intersecting each other.

An object of the present invention is to overcome the problems of the prior art described above, to have a soft texture and a soft surface touch with little surface change (does not sag) due to the shortcomings of chenille yarn, namely fiber shedding and abrasion, and To obtain a high-grade chenille woven or knitted fabric with excellent stickiness and to provide an elastic chenille yarn suitable for required multipurpose use.

[Means for Solving the Problems] In order to achieve this object, the stretchable chenille yarn of the present invention uses a covered elastic system having stretchability as a presser yarn that grips filaments, and the presser yarn It is characterized by arranging thermoadhesive threads for fusing and fixing the filaments on one or both sides.

In the present invention, the covered elastic yarn is a polyurethane elastic yarn of polyether, polyester, or polycarbonate type, which is stretched and used as the core yarn of the covering twisted yarn, and the filament yarn or the twisted yarn is used as the sheath yarn (commonly known as Filament twisted yarn (hereinafter abbreviated as F, T, Y) or alternatively, the above elastic yarn is used as a core yarn, and natural fibers such as cotton fibers or synthetic fibers are used as sheath yarn (commonly known as core 5pun Yar) in the spinning process.
n (hereinafter abbreviated as C, S, Y), those coated in concentric circles can be applied.

The elastic yarn has a breaking elongation of at least 500%,
It has a high elastic recovery rate of over 90% and an elongation draft of 1.
It is preferable to have 8 to 4.8 times. When the elongation draft is less than 1.8, the stretchability of the stretchable chenille yarn is insufficient, and when the elongation draft exceeds 4.8, the thread tends to break, which is not preferable.

The total denier of F, T, and Y used for the presser yarn is 20 to 210 deniers for the polyurethane elastic yarn that makes up the core yarn of the covering yarn, and the nylon, rayon, polyester, polyvinyl chloride, and polyurethane elastic yarn that make up the covered yarn. 30 pieces of false twisted yarn such as acrylic filament
-240 denier, particularly preferably 30-70 denier for the polyurethane elastic yarn and 50-110 denier for the covered yarn. F, T if the total denier of covered yarn is less than 30 denier
, Y has low tenacity, especially rayon yarn, polyvinyl chloride yarn, etc., so the covered yarn breaks at the initial stage of elongation, making processing difficult.

- Also, if the total denier of the covered yarn exceeds 240 denier, only thick chenille yarn will be obtained, and if the material is different from the filament, the filament effect will be reduced, and the soft and unique stretchability that is the objective of the present invention will be reduced. You won't be able to get what you want.

On the other hand, the production number for C, S, and Y is metric number 2/84.
~2/16 (fine count 50/2~8/23) is good, particularly preferably metric count 2/67~2/40 (
Fine count 40/2 to 24/23) is good. Here, the fiber material for the sheath yarn is preferably cotton fiber, acrylic or acrylic/nylon blend, and polyurethane elastic yarn in the range of 20 to 140 deniers, particularly preferably acrylic fiber and polyurethane elastic yarn. 30～
70 denier is good. Metric count 2/84 (fine count 5
If the count is smaller than 0/2, the strength of C, S, and Y will be low and processing will be difficult. Also, metric count 2/16 (fine count 8
/2), only thick chenille yarn can be obtained.

As mentioned above, C, S, and Y double yarns are preferably used as presser yarns, but single yarns may also be used.

The filament is preferably a spun yarn or a filament yarn containing 25% by weight or more of ultrafine fibers having a single fiber lff1 fineness of 1.5 denier or less based on the total weight. By using fibers with a single filament fineness of 1.5 denier or less, it has a soft touch texture with an extremely smooth surface touch, and by containing 25% by weight or more of these ultrafine fibers, the texture is soft and flexible. The result is a chenille yarn with a high-quality appearance, rich in elasticity, and high fluff density.

In addition to the above-mentioned ultrafine fibers, the filament contains single fibers with a MICA degree of 1.
．． A portion of fibers having a denier of 6 to 6.0 may be mixed. It is preferable that the content of these thick fibers is less than 75% by weight based on the total weight. Needless to say, the single fiber fineness is 1
．． 5 denier or less and contains 0.7 denier, 1.0 denier, 1.2 denier, 1.5 denier, etc. in an amount of 25% by weight or more based on the total, and 2.0 denier,
It may be a blend of different finenesses containing less than 75% by weight of 2.5 denier, 3.5 denier, etc.

The spun yarn used for the filament has a fine count of 140/13 to 5.
/1 is good, and those with a fine count of 60/1 to 16/IS are particularly preferable.

Here, the IIi fiber material used for the filament can be synthetic fibers such as rayon, acrylic, polyester, etc., or natural fibers such as cotton, silk, etc., depending on the purpose. Each has its own characteristics in terms of Sabaki effect. If the fine count is less than 140/13, the spinnability is poor and the strength of the spun yarn is low, resulting in poor processability and cannot be used. Further, if the yarn count is thicker than 5/1S, the filament density will be coarse, and only chenille yarn with poor uniformity will be obtained.

On the other hand, the total denier of filament yarn is 50 to 1
, 600 deniers are good, particularly preferably 150 to 84 deniers.
0 denier is good.

In the case of filament yarn, less than 50 denier or 1,
If it exceeds 600 denier, the filament density will be coarse and only chenille yarns with poor uniformity will be obtained.

In the case of spun yarn, single yarn is preferably used as the filament.

On the other hand, in order to obtain suede or velvet-like elastic chenille yarn with a high fluff density by using filament yarn, LLI fibers with a total denier of 150 denier or more and a single fiber fineness of 1.5 denier or less are used for the entire fiber. It is important to contain at least 1.
It is desirable to use an acrylic filament yarn of 2 deniers or less, or a single yarn consisting of 100 silk yarns (raw silk) by weight.

Next, when there are two presser threads, separately from the presser threads,
It is preferable to simultaneously feed and arrange low-melting fibers having thermal adhesive properties to both or one of the presser yarns.

In order to obtain the stretchable chenille yarn of the present invention, heat-adhesive yarn should be fed to one side of the presser yarn so as to sandwich the filament, and the type of covered elastic yarn of the presser yarn or the draft size must be adjusted. The temporary adhesion fixing effect differs depending on the size.

Here, the thermally adhesive yarn refers to a yarn that melts with heat and has adhesive properties.For example, there is polyamide fiber (a ternary copolymer of N6, N66, and N610) that has a low melting point. , this fiber thread is steamed or
It has the ability to melt and bond through heat treatment of iao'c.

In the present invention, adhesion is preferably carried out at the same time as dyeing, and this can be done by heating near the boiling point for at least 10 minutes or more. The total denier of the heat-adhesive thread is preferably 30 to 50 denier when used for both, and 10 when used for one.
It is preferable that at least 5% by weight or more of the presser yarn is mixed in around 0 denier.

FIG. 1 is a plan view of a stretchable chenille yarn according to an embodiment of the present invention, where (A> shows the stretched state and (B) shows the relaxed state.

In the same figure (A>), the filament bundle 1 is twisted while being sandwiched in the center of the two presser threads 2, and each single thread is tightened near the root, and the sabaki effect increases toward the tip. The length of the filament bundle 1 is constant, and as it is stretched, an untwisting action occurs and the filament bundle 1 turns.

The filament bundle 1 and the presser thread 2 in the stretched state are such that the temporary adhesive fixation of the thermoadhesive thread 3 used together along the presser thread 2 causes the presser thread 2 to
Despite the elongation of the filament, that is, the elongation of the polyurethane elastic thread, since it is tightly fused with the covering fibers occupying the outside, peeling does not occur easily and the filament bundle is difficult to fall off.

In the same figure (B), the filament bundle 1 is in a stable state due to the relaxation of the presser thread 2 while being temporarily bonded by the presser thread 2 and the heat-adhesive thread 3.

FIG. 2 is a sectional view taken along the line X--X in FIG. 1.

In the same figure, filament 1 is polyurethane elastic yarn (black circle)
It is sandwiched in the sand inch by a presser yarn (round cross section) 2 made of double threads of covered elastic yarn with 2' arranged in a part of the core.

At the same time, the heat-adhesive thread 3 occupying the central portion melts and adheres not only to the filament 1 but also to the outer peripheral covering fibers of the presser thread 2.

According to the experimental results in which the above chenille yarn was used as a presser yarn without using a covered elastic yarn, the polyurethane elastic yarn 2' was directly applied to the filament yarn 1 because there was no covering fiber of the presser yarn 2. Since it is adhesively welded to the heat-adhesive thread 3, it has the disadvantage that the rate of filament shedding increases when stretched, especially when stretched repeatedly. In contrast, in the present invention, the thermally bonded yarn is simply fused to the covering fibers occupying the outer periphery of the covered elastic yarn 2, without restricting the elongation or relaxation of the polyurethane elastic yarn 2' in a part of the core. , which has the characteristic that it can be performed completely freely.

The stretchable chenille yarn of the present invention is preferably obtained by the following method.

That is, the presser yarn is made of a stretched covered elastic yarn, and the presser yarn is fed by an active yarn feeding device (Rolli) that specifies the draft.
(ng take-off system), or in the case of a low draft, it can be easily fed out using a feeding device such as a feed roller that is normally installed in a yarn twisting machine. On the other hand, filament yarns and heat-adhesive yarns supplied from other attached creels are fed separately up to just before the guide trochanter, and are pulled together by a guide. Straight cheese is best for presser thread packaging, cone wrapping is best for flower threads, and pirn wrapping is best for heat-adhesive thread.

The chenille twisting machine can be easily manufactured using devices found in conventional methods (for example, Japanese Patent Application Laid-Open No. 49-101650, Japanese Utility Model Publication No. 57-27827, etc.), except for specifying the feeding of the presser yarn. can.

According to this, a gauge is attached to a frame, which forms left and right branching plates that branch out from the lower winding part of an inverted triangular thin plate and have thread holes at the top for guiding one presser thread. The continuous coiled filament bundle, which is continuously wound in a spiral manner and let out downwardly on the lower winding part of the filament winding and unreeling plate, is divided into left and right parts at the center at the lower end thereof, and the divided part is used to form a left and right branch plate. The left and right continuous divided filament bundles, which are successively unwound downward along the outer surface, are directed downward along the outer surfaces of the left and right branching plates through left and right guide trochanters close to the lower winding part of the filament winding and unwinding plate. The heat-adhesive thread runs alongside the led presser thread, and the presser thread is guided downward along the outer surface from the inside of the left and right branching plates through the left and right thread holes, respectively, and the center portion is sandwiched between the heat-adhesive thread and the presser thread. While guiding, the lower left and right twists are twisted together by a device and wound onto a bobbin.

As a cutting device for dividing the continuous coiled filament bundle, which is successively wound in a continuous spiral on the lower winding part of the filament winding and unreeling plate and is let out downward, into two parts horizontally at the center at the lower end thereof. It uses a cutter blade that moves back and forth continuously or rotates with an inner cutter.

The stretchable chenille yarn obtained in the present invention is used for woven or knitted fabrics, but most of the yarn is steam-treated in its entirety. Processing conditions are 90-120°C, 2-8 minutes, preferably 9
A temperature of 6 to 105°C for 3 to 5 minutes is preferable. Thereafter, the yarn is dyed and used in chenille woven or knitted fabrics in any pattern or design.

On the other hand, for piece dyeing, after making a chenille woven or knitted fabric, a temporary adhesive fixing process is performed at the same time as dyeing.

In addition, the stretchable chenille yarn obtained in the present invention can be stretched in the horizontal direction, vertical direction, or 2-May.
A stretch woven or knitted fabric can be obtained. The structure of the woven or knitted material is not particularly limited and can be freely selected. For example, in the case of a woven fabric, a horizontal double weave, a vertical double weave, or a back weave is preferred.

In the case of knitted fabrics, flat knitting, circular knitting, warp knitting (especially using a weft thread insertion machine), etc. may be used, and many of the pattern threads may be exposed on the surface, or hand knitted or tricot knitted by placing them on the ground thread to give stretch properties. Edited by Pyle, edited by Pyle, etc., and their applied organizations are preferred.

In general, the novel stretchable chenille woven or knitted fabric developed in the present invention can be processed by processing ordinary woven or knitted fabrics, that is, steam treatment,
Relaxation/scouring treatment, dyeing, brushing, and other finishing treatments, such as finishing agents such as anti-shock agents, smoothing agents, and softening agents, can be appropriately applied with resin finishing.

Further, the order of processing may be such that, for example, after being applied to knitted fabrics, steam treatment and dyeing may be performed. Further, the dyeing machine may be a rotary back type, a jet type, a patch type, or a cage type dyeing machine, and the method, conditions, etc. can be freely selected as appropriate.

In the method for measuring the filament shedding rate used in the present invention, a sample of 100 jersey knitted fabrics knitted under the same conditions is prepared, and a tension of 1 kg is applied to the sample. On the other hand, a load of 2 kg was applied to a metal plate wrapped with cotton cloth, and the plate was reciprocated 500 times on one surface of the sample. After treatment, the fluff that fell off was sucked up with a vacuum cleaner, and the weight (g>) before and after treatment was measured. , the dropout rate (%
) is calculated.

As for the number of measurements, the average of 5 samples is calculated. In the present invention, this method is tentatively referred to as the friction method.

Dropout rate (%) = 1 - 1 song.

Weight before treatment (g) Next, the stretch amount is defined and measured not by the breaking elongation of the stretchable chenille yarn, but by the initial high elongation to low stress as it is stretched from the origin O, as shown in Figure 3. A, then the elongation suddenly stops and tensile stress B occurs,
In the process of reaching breaking point Z, between point B and point 7, a point H intersects with the X axis, assuming a close race on a straight line near point B.
is determined, and the elongation rate from the origin O to the intersection H is defined as the amount of stretch. The measurement conditions were a test length of 20 cm, a tensile rate of 100%/min, an initial load of 2 ml/denier, and a stress-extension curve was drawn on a chart using a low-speed elongation method (JIS L 1090). The number of measurements is 20, and the average value is calculated.

Example 1 The following various fibers were combined to spin C3S and Y for presser yarns, and these C, S, and Y were processed into double threads.

Core part: Polyurethane elastic yarn (Trademark of Toshi DuPont Co., Ltd.; “Opelon”) 20.30D, 70D T-127 Covered portion Niacrylic staple fiber (Trademark of Toshi Co., Ltd.; “Trelon”) Fineness 2.5 denier cut Length: 75mm Number of crimps: 15 threads/irt Draft ratio: 3.5x Spinning count: 1152 As filament, 1.0% of the acrylic staple fiber used as presser yarn was used.
A spun yarn with a metric count of 1748 was used by mixing 7 denier, 1.5 denier, 3.5 denier, etc.

A 100D-10F low-melting polyamide yarn (Trademark of Toshi Co., Ltd.; ``Elder'') was simultaneously fed to one side of the two presser yarns, and the number of twists was 400 to 600 T/m, and the cut length of the filament was 1.
7mm and 2.5mm, metric size 1/2.8 to 1
/1.1 various chenille yarns were obtained.

Next, the chenille yarn was steam-set at 105° C. for 5 minutes to melt the low melting point polyamide yarn and temporarily bond and fix the filament and core yarn.

The results obtained are shown in Table 1.

Example 2 The filament used in Example 1 was subjected to chenille processing using various types of F, T, and Y as presser yarns, and low-melting point polyamide yarns 30D and 500 were combined and fed to the presser yarns to determine the cut length of the filament. 2,
5111111. Metric size 1/1°40~1/1.
Various chenille yarns of No. 05 were obtained.

Next, the chenille yarn was steam-set at 95° C. for 3 minutes to melt the low melting point polyamide yarn and temporarily adhere and fix the presser yarn and filament. The results obtained are shown in Table 2.

Example 3 The following various filament yarns were used as filament threads for the presser threads used in Examples 1 and 2.

Acrylic long fiber 150 -72F 100D-50' (Asahi Kasei Industries, Ltd. trademark; "Pieuron'") Polyester long fiber [) FD 150 -48 75 -48F (Toushi Co., Ltd. trademark; "Lumi Red'") Nylon thread 210°- 48F 140D-96' (Toshi Co., Ltd. trademark: "Yox") Silk (raw silk) 27 medium/2 (domestic silkworm) and 50D/2 (
Wild silkworm) 50-17F low melting point polyamide yarn is simultaneously combined with both of the two pressing threads, the number of twists is 400-500T/m, the cut length of the filament is 1.7mm, and the metric count is 1/14.0.
Various chenille yarns of ~1/2.0 were obtained.

Next, the above-mentioned chenille yarn was completely fried, and the dyeing conditions were as follows: B. Using a rotary back dyeing machine.

11 (96°C) and stained for 30 minutes.

The results obtained are shown in Table 3.

Comparative Example Polyurethane elastic yarn 400 and 7oD bare yarn were used as presser yarns, and filament yarns were Example 1 and acrylic long fibers as filament yarns (Asahi Kasei Kogyo Co., Ltd.; "e'neon">100D-50') (?/L/-)Bright)
The yarn was twisted and steam set in the same manner as in Example 2 using the same method as in Example 2 to obtain a stretchable chenille yarn.

The results obtained are shown in Table 4.

(The following is a blank space) [Effects of the Invention] As described above, according to the present invention, the following effects can be achieved.

b) By using a stretched covered elastic yarn made of polyurethane elastic yarn as the presser yarn, a stretchable chenille yarn with excellent recovery elasticity, good durability, and improved practical functionality is created. can get.

As a result, the result is a chenille yarn with a soft texture, and when made into chenille woven or knitted fabrics, it has a high weave density, and can be used for long-term use in furniture, multi-panels, wall coverings, sheets, etc.
It can also be preferably used for durable applications such as bags.

By simultaneously feeding heat-adhesive yarn to fuse and fix the filament to both or one of the presser yarns, it becomes an elastic chenille yarn that is difficult to handle.

c) Furthermore, since the presser yarn is a stretched covered elastic yarn, any space between the presser yarn and the filament is filled with the thermoadhesive yarn. In other words, the heat-adhesive thread and filament density will increase as the filament becomes more relaxed, and the binding force of the filament and temporary adhesive fixation will become stronger. you get something,
This is a stretchable chenille yarn that requires little processing and has excellent durability and is resistant to abrasion.

2) When using spun yarn or filament yarn containing 25% by weight or more of fibers with a single fiber fineness of 1.5 denier or less for the filament, the surface touch is extremely soft and the fluff density is high. , a stretchable chenille yarn with a design superior to that of conventional yarns can be obtained. In other words, in the case of high-quality products with a dense surface, especially when using filament yarn, the elastic chenille yarn has a surface luster similar to suede or velvet, giving it a unique and luxurious feel.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a stretchable chenille yarn according to an embodiment of the present invention, in which FIG. 1 (A> is a side view showing the stretched state, FIG. 1 (B) is a side view showing the relaxed state, Fig. 2 is a cross-sectional view taken along the line X-X in Fig. 1. Fig. 3 is a graph showing the strength and elongation curve of the stretchable chenille yarn according to the present invention. 1: Filament bundle 2: Presser foot Yarn 2': Part of the core of the covered elastic yarn constituting the presser yarn Elastic yarn 3: Heat-adhesive yarn Patent applicant DuPont Azuma Co., Ltd. Figure 1 Figure 2

Claims (2)

[Claims] (1) A stretchable covered elastic thread is used as a presser thread for gripping the filaments, and heat-adhesive threads for fusing and fixing the filaments are arranged on both or one of the presser threads. A stretchable chenille yarn characterized by: (2) Claim 1, characterized in that the filament is a spun yarn or filament yarn containing at least 25% by weight of fibers with a single fiber fineness of 1.5 denier or less. Stretch chenille yarn as described.