JPS5929693B2 - Non-glued fabric - Google Patents

Description

[Detailed description of the invention] The present invention relates to a glue-free fabric made of staple fiber bundles.

In recent years, glue-free weaving has been able to reduce costs because it does not require a glue process or a scouring process, and has also solved pollution-related problems such as water pollution caused by glue waste liquid in the glue process and air pollution caused by the heat source boiler in the drying process. Since there is no such thing, it is attracting attention.

In addition, in terms of dyeing and finishing, direct dyeing and finishing that eliminates the scouring process has been studied, and glueless weaving is a technology that is attracting attention as it enables direct dyeing.

On the other hand, open-end yarn obtained by the open-end spinning method has been widely used as raw yarn for weaving because of its low manufacturing cost and excellent productivity. Open-end yarns have a high number of fluffs, a long fluff length, and low cohesiveness. Therefore, they are generally woven by gluing, and the gluing process imparts cohesiveness to the yarn. Usually, the material is subjected to processes such as imparting smoothness, fluffing, etc. before being used for weaving.

The present inventors have arrived at the present invention as a result of intensive research, in view of the industrial advantages of the above-mentioned glue-free weaving and open-end yarn, with the aim of obtaining a glue-free fabric that takes advantage of the characteristics of both. did.

This purpose is to produce a fiber bundle consisting of short fibers with a fiber length of 38N11L to 70mm, with a coefficient of 4.5 or more, and a number of fluffs with a length of 3mm or more of 30 pieces/m or less. The number of fluffs with a length of at least 10/
m or less open-end spun yarn is used at least for the warp yarn of the fabric, and the warp yarn cover factor is 10.4 to 20.
．． A non-glued fabric characterized by: 4.

(However, the cover factor is calculated using the following formula.

K=n/JS : Vertical force bar factor n: Warp thread density between 1 inch S: Warp thread count (wire number) The present invention will be explained in further detail below.

Generally, in order to carry out weaving without glue, it is necessary that the yarn has little fuzz, and that the yarn has cohesive properties and a certain degree of cohesion.

Here, the open-end yarn is produced by a method in which a sliver made of short fiber bundles used in ordinary link spinning is subjected to roller drafting, then opened with an aspirator, and the fibers are bundled in a rotating spinning chamber, or It can be obtained by drafting and opening the sliver using a combing roller, and then converging the fibers in a rotating spinning chamber. However, in order to apply open-end yarn to glueless weaving, the number of open-end yarns must be increased. In other words, it is effective to make the coefficient larger.

By increasing the coefficient, the outer layer fibers are wound more often on the inner layer fibers with good parallelism, which reduces the number of fluffs and shortens the fluff length. It has improved cohesiveness, making it the perfect yarn for glueless weaving.

In order to improve the parallelism of the inner layer fibers, it is best to use open-end spinning, especially roller drafting and aspirator opening, but even with combing roller draft opening, the manufacturing conditions should be set appropriately. It is fully possible to realize this by

Regarding the relationship between twist coefficient and binding force of yarn: Polyester staple, 2 denier, fiber length 51 mm.

The results of open-end spinning and measurement of 158 are shown in the fourth section.
Shown in the table.

The binding force is evaluated on a 5-grade scale from 5 to 1, and an evaluation value of about 3 or higher indicates binding force characteristics that allow effective glue-free weaving.

In addition, in this experiment, the number of fuzz in the yarn was also measured and studied.

As is clear from Table 1, the present inventors have found that by using an open-end yarn with a coefficient of 4.5 or more, it is possible to effectively perform weaving without glue in terms of binding force.

Further, as a result of various evaluations and studies of the fabric properties after processing the fabric into a fabric, it was found that a high-quality fabric could not be obtained unless the fluff length and fluff number were set to values in a specific range.

In particular, the fluff of the yarn should be 3 mm or more in terms of fluff length, 5
We discovered that it is effective to evaluate the number of fluffs generated in two stages of fuzz of 3mm or more and specifying the number of each type of fluff when fabric is made.As a result of considering these, we found that the number of fluffs of 3mm or more is 30/30. It has been found that preferable glue-free weaving can be achieved by setting the number of fluffs of 5 mm or more to 10 or less/m.

Also, regarding the length of short fibers used, the fiber length is 38m.
It is necessary to set the fiber length to a value of 38 mm or more, and even if the coefficient is set to 4.5 or more, the number of fluffs of 3 mm or more increases significantly, which is not preferable.

Furthermore, when the fiber length exceeds 70 mm, the cohesiveness tends to improve, but moderately long fuzz (fuzz of about 7 mm or more) becomes scattered, which is not preferable.

Appropriate length fuzz of about 7 mm or more can be greatly reduced by using fibers with a fiber length of 70 m7 It or less.

Table 2 shows polyester staples, 2 denier, 1
An example of the relationship between the number of fuzz and the binding force when using various fiber lengths by open-end spinning 58 and using fibers with various fiber lengths such that the coefficient becomes 4.8 is shown.

Glue-free weaving is achieved by using open-end yarns with the characteristics described above.

Here, the number of fuzz and convergence, which are important factors when weaving without glue, differ depending on the type of fabric, weaving method, fabric density, yarn usage, etc., but the vertical cover factor is 10.
．． A value of 4 to 20.4 is required from the viewpoint of mesh size, texture, and weavability.

That is, if the warp thread cover factor is less than 10.4, the weave of the fabric will become coarse, causing misalignment, which is undesirable.

Moreover, when the same value exceeds 20.4, not only the texture of the fabric becomes hard.

This is undesirable because opening defects occur due to fluff.

Furthermore, when weaving with approximately 2 reeds per reed/5 feathers/feathers, sufficiently effective glue-free weaving is possible by using open-end yarn that satisfies the above conditions. There are no problems at all with weaving without glue for both sexes.
In addition, there is no significant difference in fabric quality or texture from conventional thread-based fabrics.

Even if the coefficient is less than 4.5 and satisfies the fuzz number conditions of the present invention, the convergence is poor, and although it is not impossible to weave without glue, many wrinkles occur, and it is difficult to obtain a fabric with a quality that is satisfactory as a product. I can't do it.

In addition, even if the coefficient is 4.5 or more, if the number of fuzz does not meet the conditions of the present invention, convergence will be poor, opening defects due to fuzz will occur, floating weave, sagging, etc. will occur, and fabric defects will increase. .

Furthermore, when the fiber length is longer than 70 mm, the amount of fluff increases, which causes poor opening as described above and causes fabric defects.

The yarn count used in the yarn of the present invention may be of any thickness, but 58 to 30S is particularly preferred as it has a large effect.

When the yarn count becomes thinner, the strength of open-end single yarn is lower than that of ring-spun yarn, so excessive tension during weaving, or the straining caused by reeds or heddle joints can cause yarn breakage and fuzzing, resulting in poor weavability. There is a tendency.

Moreover, in the case of a large count, there are many problems in spinning, and it is not very preferable as a yarn for non-glued weaving.

The open-end yarn for weaving without glue of the present invention can be obtained by simple means such as reducing the feed rate of the raw yarn in a conventional general open-end prevention method.

The open-end yarn for weaving without glue of the present invention is obtained by an open-end spinning method with excellent productivity, and has the industrial advantage of being capable of weaving without glue.
It is.

Example 1 Polyester stable 2 d x 51 mm (65
158 on an open-end spinning machine with a coefficient of 4.8 using a 2d x 51 (35 bearings) rayon table.
spun out.

Next, use chain yarn to create a vertical cover factor of 14.1.
A comparison was made between weaving Tropical yarn with a weft cover factor of 13.8 without glue and using this yarn with conventional glue.

Furthermore, as an example of conventional open-end yarn using the same material as in this example, we compared and examined cases where the yarn was spun on an open-end spinning machine with a coefficient of 4.1 and woven without glue and with glue. The results are shown in Table 3.

As is clear from Table 3, if the open-end yarn of the present invention is used, the weaving performance is comparable to or better than that of conventional open-end yarn that is weaved through gluing.
It can be seen that textile properties can be obtained.

Furthermore, it can be seen that even when the open-end yarn of the present invention is woven without glue, it has almost the same weavability and fabric properties as when it is woven with glue.

And among the above open-end yarns, the coefficient of twist is 4.8,
Woven fabrics were made using glue-heated yarns (open-end yarns of standard water in the top column of Table 3) with different cover factors.

The results are shown in Table 5. As is clear from Table 5, Experiments Nos. 2 to 4 were within the scope of the present invention, and good non-glued fabrics were obtained.

On the other hand, in Experiment No. 1, the cover factor was lower than the range of the present invention, resulting in a fabric with large shedding and poor quality.

Furthermore, in Experiment No. 5, the cover factor was too large, so fuzzing occurred frequently, the weavability was poor, and the quality of the appearance of the product obtained was also poor.

Examples 2-12 Examples 2-3 are polyester stable 1.5dX4
4mm (75%), rayon table 1,5 (IX4
4mm (25%), and Examples 4 to 12 were open-end spun using polyester staple 2dX51mm (75%) and rayon staple 2dX51mm (25%), and weaved without glue using each yarn. .

Table 4 shows the results of evaluating each of the weavability and fabric properties.

In addition, in Examples 2 to 5, when the coefficient was kept constant at 4.8 and the yarn count was variously changed, in Examples 6 to 9, the yarn count was 158.
If the spinning coefficient is kept constant and the coefficient is varied,
Further, Examples 10 to 12 are cases in which the yarn count and twisting coefficient are kept constant and the fluff characteristics are varied in various ways.

As is clear from Table 4, as the yarn count becomes finer, warp yarn breakage increases and weavability tends to deteriorate.

Furthermore, from Examples 6 to 9, it is clear that by increasing the coefficient, the weavability is improved and the fabric properties are improved, and from Examples 10 to 12, if the fluff properties are within the range specified by the present invention, good results are obtained. It is clear that weavability and textile properties can be obtained.

In addition, in Table 1, Table 2, and Examples 1 to 12, all open-end spinning was performed using a roller draft + aspirator opening method.

The spinning conditions are as follows. Rotation speed of rotating spinning chamber
3ooooorpm Aspirator air pressure 0.5
kg/cn', the spinning speed is 27 m/m1xfl to 50 m1m1n, and the fluff properties, binding force, weavability, fabric nep, fabric texture, and cover factor are the values shown below.

(I) Fluff characteristics: East-shaped fluff counter DT-10
4, thread tension 5g/piece, take-up speed 70m/ml yt
The number of fluff was measured by fluff length and expressed as the number of fluff per 1 m.

(II) Cohesion force (convergence): Apply a load of 300g per 15 pieces using the TM type cohesion force tester mentioned above, and test at 120 g for 1 minute.
The sample was rubbed 100 to 400 times at a speed of 100 to 400 times, and the state of the friction was visually evaluated in 5 grades.

The conjugation power improves in the order of ■, 23.4.5.

(1) Weavability: 60m of each was woven, and yarn breakage per 60m is shown.

The rotation speed of the loom is 180 rpm! It is. Side fabric nep: The condition of the nep on the finished fabric surface was visually determined.

The best nep state, such as a fabric woven with glue using the yarn of the present invention, is indicated by ◎, and the nep state, such as when woven with a conventional thread without glue, is indicated by x.

Between ◎ and X, two evaluation levels, ○ and △, were further set.

■) Fabric texture: Judgment was made with ○, △, and × focusing on thickness and hardness.

(Capital) Cover factor was calculated using a quadratic formula.

K = n / v'T K: Vertical, (horizontal) cover factor n: Vertical (horizontal) density between 1 inch S: Vertical (horizontal) count

Claims (1)

[Scope of Claims] 1. A fiber bundle consisting of short fibers with a fiber length of 38 mm to 70 mm, which has a coefficient of 4.5 or more, and 3.
The number of fluffs having a length of im or more is 30 pieces/m or less, 5
An open-end spun yarn having a length of mm or more and a number of fluffs of 10 or less/m is used at least as the warp yarn of the fabric, and the warp yarn cover factor is 10.4 to 20.4. Nori woven fabric. (However, the cover factor is determined by the following formula. K = n / J S K: Warp cover factor n: Warp thread density for 1 inch S: Warp thread count (wire number)