JPH01229839A - Production of polyamide woven fabric - Google Patents

Abstract

PURPOSE:To obtain a high-quality woven fabric free from shiners using warp and weft each having a specific fineness in weaving high speed spinning polyamide multifilament interlacing yarn used as warp and weft in state free from twisting and sizing. CONSTITUTION:When polyamide multifilament yarn obtained by spinning at high speed of >=3500m/min take-up speed and having >=3500m/min take-up speed, 45-65%, preferably 45-55% breakage elongation and 10-60/m, preferably 10-40/m interlace pin count is woven in an air jet room and state free from twisting and sizing using the yarn as warp and weft, single yarn denier of warp and weft is in the range expressed by formula I and formula II to readily provide the woven fabric having excellent feeling and weaving properties.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for weaving polyamide multifilament fabric without twisting or sizing using an air jet loom, in particular using high speed spun multifilament yarn. The present invention relates to a method for high-speed weaving of high-quality textiles without any irritability.

BACKGROUND OF THE INVENTION Although air jet looms are primarily suited for weaving spun and hydrophilic filament yarns, they are also being used to weave hydrophobic multifilament yarns such as boria, midfibers and polyester fibers. In polyamide fabrics, when untwisted and unsized yarns are used as warp yarns, especially when yarns spun at a high speed of 3500 m/min or more are used, a disadvantage of irritability, which is characteristic of entangled yarns, occurs. This phenomenon is similar to when weaving in a water jet loom, and also when using shuttle or shuttleless looms that do not use water, there is a considerable difference in the level of irritation depending on the combination of warp and weft yarns that make up the fabric. The present inventors have clarified this. Furthermore, even fabrics that use yarns that cause irritation in the warp and spun yarns in the weft, for example, are of poor quality.Furthermore, fabrics that use filaments in the weft are so irritated that they cannot cover up the defects of the warp. This is noticeable and results in a fabric that is extremely impractical. That is, even in air jet loom weaving ζ, it is extremely important to set certain weaving conditions in order to eliminate the irritation of the fabric, which led to the present invention.

C Problems to be Solved by the Present Invention a) The present invention aims to solve the above-mentioned conventional drawbacks, that is, the irritation of the fabric, in the method of weaving polyamide multifilament interlaced yarn spun at high speed as at least the warp in an air jet loom. The present invention provides a method for weaving a high-quality polyamide fabric without twisting or gluing.

(Means for Solving the Problems) The present invention has the following measures to solve the problems.

That is, polyamide multifilament yarn with a cutting elongation of 45 to 65% and a degree of entanglement of 10 to 60 pieces/m obtained at a take-up speed of 3500 m/min or more was used as the warp and 1'7 yarn using an Airgie nodroom (1 in A). ? This is a method for producing a polyamide fabric, characterized in that the following formulas (1) and (2) are titrated during weaving without WA glue.

1.5 ≦A≦4.2 ・・・・・・・・・・・・・・・
・(1) 0.25≦B/A≦1.2 ・・・・・・・・
・The following is a detailed explanation of the present invention. The polyamide multifilament yarn used in the present invention has a take-up speed of 3
It is necessary that the yarn be wound at a high speed of 500 m/min or higher and have a breaking elongation of 45% to 65%. The purpose of using multifilaments spun at high speed is to improve weavability. This is because conventional FDY is disadvantageous for industrial production because it frequently causes opening defects due to fluffing due to non-uniform yarn quality. Breaking elongation is 6
If it exceeds 5%, it will be susceptible to physical effects after it is made into a textile, and defects such as warp lines and irritation will easily occur.
If it is less than 45%, the processability tends to decrease, and preferably 45 to 55%. Birefringence c: 0.35 to 0.045 for nylon 6 multifilament yarn, 0.040 to 0 for -J-Iron 66 multifilament yarn
．． 052 is sufficient. Both are undesirable because at the lower limit of the above range, defects such as warp lines and irritation tend to occur, and when the upper limit is exceeded, the appearance and feel of the fabric tend to deteriorate.

Next, it is necessary that the degree of entanglement of the polyamide multifilament yarn L is within the range of 10 to 60 threads/m.

If the degree of entanglement exceeds 60 strands/m, entanglements remain in the fabric, causing irritation defects and the like, and loops may occur in the yarns, resulting in poor weavability. Moreover, if the warp thread is 10 threads/m or more, the warp yarns lack cohesiveness and fuzz is likely to occur during the warping and weaving processes.

Preferably, it is 10 to 40 pieces/m. Note that the degree of entanglement here refers to the CF value measured by the method described in US Pat. No. 2,985,995.

Next, weaving conditions, which are the key points of the present invention, will be explained. That is, when weaving with no twist and no glue using an air jet loom, the single yarn denier A of the warp is 1.5 to 4.2.
At the same time as the denier, the single yarn denier B of the weft is 0.2
It is necessary that the denier be within the range of 5≦B/A 1.2 denier. This is because the inventors have discovered that the balance between the single yarn denier of the warp and the single yarn denier of the warp and weft has a close relationship with the quality and texture of the fabric, such as irritability defects.
As a result of careful consideration, we have arrived at the conditions described above. In other words, the degree of irritation increases as the warp single yarn denier increases, and the weft C1i increases with respect to the warp single yarn denier.
It was revealed that the yarn denier or the thinner the combination, the larger the yarn tends to be.

If the warp single yarn denier exceeds 4.2 denier, the quality of the fabric, such as irritability defects, tends to deteriorate significantly.
．． If the denier is less than 5, fuzz will occur, making it difficult to weave and increasing the cost, which is outside the scope of the present invention.

In addition, preferably 2 to 3.5 deniers are good.

Furthermore, if the ratio (B/A) of the single yarn denier of the warp yarns A and the weft yarns B exceeds 1.2, the texture of the fabric will become stiff, and the texture of the warp yarns during high-speed spinning cannot be utilized. Further, if it is less than 0.25, it tends to cause irritation defects and is excluded from the present invention. In addition, the total denier of the warp yarns is preferably 40 to 140 tenier from the viewpoint of productivity and cost, and more preferably 50 to 140 tenier.
~110 denier is preferred, and the number of filaments is 10~
48 pieces is preferable. The toque denier of the weft is 40-2
10 denier and the number of filaments is preferably 12 to 96. In addition, the warp density of the woven fabric is 75 to 150 threads/inch.
If it exceeds 150 threads/inch, the weavability will deteriorate, and if it is less than 75 threads/inch, it will be easy to cause misalignment. The weave structure may be plain weave, twill weave, satin, etc. There is no need to consider any different conditions for the above-mentioned weaving conditions from those of the normal FDY method.

Furthermore, the polyamide multifilament yarn used in the present invention refers to a multifilament yarn made of nylona 6, nylon 66, etc., but it may also be made of a material containing polyamide copolymerized with a third component or other polymers as necessary. may be done. The polyamide multifilament yarn may also contain matting agents, modifiers, and the like. The cross-sectional shape is
It may be round, triangular, hexagonal, flat, hollow, etc.

(Example) Examples 1 to 6. Comparative Examples 1 to 4 Nylon 6 (semi-dull yarn, round cross section) with a take-up speed of 4,700 m/min and a cutting elongation of 50% was interlaced under the conditions shown in Table 1, and then the interlaced yarn was used as warp and weft in an air jet loom. (lJ! ZA200 manufactured by Takomasha
．． At 520r/m), the density of the cloth is 12i length and 7inch.
It was woven with a plain weave of 85 wefts/inch, subjected to ordinary No and Gar dyeing, and quality evaluated (Tables 1 and 2).

As described above, the fabrics within the scope of the present invention (Examples 1 to 6) do not show any irritation, have a soft texture and are rich in bulkiness, and have excellent weavability, but the single yarn denier of the warp is beyond the scope of the present invention (Comparative Example 1.2)
Irritation and meridian muscles were clearly observed. In addition, in a fabric in which the single yarn denier ratio of warp to weft exceeds the range of the present invention (Comparative Example 3), no irritation was observed, but the texture of the fabric was significantly deteriorated. In addition, in the case where the single yarn denier of the warp yarns was lower than the range of the present invention (Comparative Example 4), although the irritability and texture were excellent, there was a lot of fuzz and the weavability was significantly lowered.

(Effects of the Invention) According to the present invention, it is possible to easily produce high-quality untwisted and glueless fabrics with excellent texture and weavability that are free from irritation and defects, which was previously considered to be extremely difficult with high-speed spinning, using an air jet loom. I was able to get it. Moreover, the present invention enables weaving under the same conditions as the normal FDY method, and has the advantage of being extremely superior in terms of cost and productivity.

Claims (1)

[Claims] Polyamide multifilament yarn with a cutting elongation of 45 to 65% and an entanglement degree of 10 to 60 co/m obtained at a transaction speed of 3,500 m/min or more is untwisted using an air jet loom as the warp and weft. A method for producing a polyamide fabric, characterized in that the following formulas (1) and (2) are satisfied when weaving without glue. 1.5≦A≦4.2……(1) 0.25≦B/A≦1.2……(2) [A: Single thread denier of warp] [B: Single thread denier of weft]