JPS60110941A - Composite yarn - 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 The present invention relates to a composite yarn consisting of a multifilament yarn made of thermoplastic fiber and a multifilament yarn made of recycled fiber.
- A composite yarn in which yarn and multifilament yarn made of recycled fibers with a smaller heat shrinkage rate are intertwined, and has a spun-like texture with a rich volume and excellent anti-pilling properties.

The present invention relates to a composite yarn that is capable of producing woven or knitted fabrics that are hygroscopic, have appropriate drapability, and have a fine heathered appearance.

Conventionally, a yarn that integrates a thermoplastic fiber multifilament yarn and a recycled fiber multifilament yarn is made by twisting both multifilament yarns together.

It is known that the yarn is integrated by a method of subsequently subjecting it to a relaxing heat treatment, or by a method of pulling both multifilament yarns together and simultaneously processing them.

In these yarns, there is almost no entanglement between the single filaments of the thermoplastic fiber multifilament yarn and the recycled fiber multifilament yarn, and the two multifilament yarns are separated from each other and form a group. .

Therefore, woven or knitted fabrics using these conventional yarns simply exhibit the respective characteristics of both filament yarns, tend to have a simple texture and heathered texture, and also have the characteristics of both multifilament yarns. It has disadvantages such as poor blending properties and the tendency for heather spots to occur. Furthermore, if an excessive amount of real twist is applied to these conventional yarns in order to improve the heathering properties, it is difficult to give the yarn a volume feeling with air content.

Further, yarns in which multifilament yarns made of thermoplastic fibers and multifilament yarns made of recycled fibers are subjected to fluid treatment are also known. This type of yarn is roughly divided into one interlace type, which is mainly intended for interlacing, and so-called interlace type, which has many loops, but the former lacks a sense of volume, and the latter has poor drapability. There are drawbacks.

In addition, in these yarns, the characteristics of the multifilament yarn of the thermoplastic fiber and the multifilament yarn of the recycled fiber are offset by the characteristics caused by loops and entanglements, resulting in mediocre texture and performance. There are many cases in which these yarns have a tendency to cause problems, which often places restrictions on the uses of woven or knitted fabrics obtained from these yarns.

Furthermore, the yarn of Taslan Eve has many loops made of filament yarn of thermoplastic fibers in the surface layer of the yarn, so it has a strong feel.

There were drawbacks such as the tendency to cause pilling.

The present invention overcomes these conventional drawbacks, and includes:
Its purpose is to have hygroscopic properties.

To provide a composite yarn which has appropriate drapability, has a comfortable heathered texture, is almost free from pilling, and can give a spun-like texture with high air permeability when made into a woven or knitted fabric. be.

In other words, the present invention is a yarn in which a multifilament yarn of thermoplastic fibers and a multifilament yarn of recycled fibers are intertwined with each other, and the multifilament yarn of thermoplastic fibers is composed of filaments with a fineness of 2 denier or less, and is recycled. The filaments constituting the multifilament yarn of thermoplastic fiber, which have a heat shrinkage rate 5% or more higher than that of the multifilament yarn of the fiber, are arranged in the core, and the filaments constituting the multifilament yarn of the recycled fiber are arranged in the core. The gist of the composite yarn is that the loops are formed in the multifilament yarn of recycled fibers, and the loops are formed in the multifilament yarn of recycled fibers.

The present invention will be explained in detail below.

First, the composite yarn of the present invention is a multifilament yarn made of a thermoplastic fiber such as polyester or polyamide, and a multifilament yarn made of a recycled fiber such as viscose rayon, which are joined by the entanglement of the filaments constituting these yarns.

Moreover, the yarn as a whole is comprised of multifilament yarns mainly made of recycled fibers in the outer layer and multifilament yarns mainly made of thermoplastic fibers in the core.

Second, the composite yarn of the present invention has a large number of ring-shaped or arch-shaped loops formed in the outer layer of the yarn, and these loops are made of multifilament yarn made of recycled fibers that make up most of the outer layer of the yarn. It is formed. Of course! A loop may also be formed in the multifilament yarn of the thermoplastic fiber, but the multifilament yarn does not need to be formed with a loop. Furthermore, in the composite yarn of the present invention, the multifilament yarn of thermoplastic fiber has a thermal shrinkage rate that is 5% or more higher than that of the multifilament yarn of recycled fiber, and the multifilament yarn of thermoplastic fiber is comprised of the multifilament yarn of thermoplastic fiber. The fineness of the filament is 2 deniers or less.

Here, the above heat shrinkage rate was determined as follows.

First, apply an initial load of yarn denier xi (g) to the yarn, measure the length of 50olIII11, give it 2 points, and then immerse it in boiling water for 30 minutes without a load, then take it out and lightly wipe it with absorbent paper. After draining the water.

Air dry for 24 hours, apply the above initial load again, measure the length 1) between the two points, and calculate using the linear equation.

The composite yarn of the present invention has a multifilament yarn made of thermoplastic fibers and a multifilament yarn made of recycled fibers intertwined with each other, and the multifilament yarns made of recycled fibers are mainly arranged in the outer layer, and loops are formed in the filament yarns. Because of this, it has good hygroscopicity (has a dry feel and less pilling).

In addition, the thermoplastic fiber multifilament yarn, which has a heat shrinkage rate 5% or more greater than the recycled fiber multifilament yarn described above, is mainly arranged in the core.

After being made into a woven or knitted fabric, when it is exposed to heat during dyeing and finishing, it shrinks and becomes more entangled. Moreover, due to the difference in heat shrinkability between the thermoplastic fiber multifilament yarn that occupies the core and the recycled fiber multifilament yarn that occupies the outer layer, a kind of bimetallic phenomenon occurs, adding tightness to the core and increasing the tightness in the outer layer. The degree of space increases, and bulkiness and span-like properties are improved. Therefore, when made into a woven or knitted fabric,
It can give a spun-like voluminous feel with high tension, waist, drapability, and air permeability.

Furthermore, since the composite yarn of the present invention has a fineness of the filaments constituting the thermoplastic fiber multifilament yarn of 2 deniers or less, it has good entanglement and good blendability with recycled fiber filaments, giving it a fine texture for woven or knitted fabrics. It can give a nice heathered tone. Furthermore, it is possible to provide a good texture without any rough or hard feeling.

If the filament fineness of the multifilament yarn of the thermoplastic fiber exceeds 2 deniers, entanglement occurs.

This is undesirable because the fiber blending effect is reduced, heather spots are likely to occur, and the texture becomes rough and hard. Furthermore, if the difference in heat shrinkage rate between the multifilament yarns is less than 5%, drapeability and sufficient volume cannot be provided, which is not preferable.

FIG. 1 is a side view showing an example of the composite yarn of the present invention,
The multifilament yarn of thermoplastic fiber (A) occupies more of the center part. The multifilament yarn of 1 recycled fiber (B
) occupies more of the multilayer part, many loops (b) due to the filament l- of the multifilament yarn (B) exist on the surface of the yarn, and loops due to the filament of the multifilament yarn (A) are present on the surface of the yarn. (a) exists slightly between loops (b).

The composite yarn of the present invention can be manufactured, for example, as follows.

In Fig. 2, a multifilament yarn (A) of thermoplastic fibers is sent out at a constant overfeed rate from a supply roller (1), and a raw yarn m is fed from another supply roller (1'').
It is obtained by feeding a multifilament yarn (B) of recycled fibers fed out at a constant overfeed rate higher than that of (A) to a jet nozzle (2) and taking it off with a take-off roller (3).

In other words, the yarn (A) is fed at a low overfeed rate by the jet fluid disturbance action of the jet nozzle (2).
Form a small loop in the filament. At the same time, the yarn (B) fed at an overfeed rate is subjected to a relatively larger disturbance effect than the yarn (A), and a loop with a long loop length is formed in the filament of the yarn (B). . As a result, more filaments of yarn (A) with a low overfeed rate gather and intertwine in the core of the composite yarn, and more filaments of yarn (B) with a high overfeed rate are arranged in the outer layer. That will happen. Furthermore, since the two yarns (A) and (B) have different loop shapes, sizes, and numbers, they form a complicated and tightly entangled state.

FIG. 3 shows another manufacturing example of the present invention, in which two multifilament yarns (A) and (A') of thermoplastic fibers are respectively fed from the supply rollers (11, (1'')).

Two recycled fiber multifilament yarns (B).

(B).

The yarn of the present invention has the above structure.

It has hygroscopic properties, has a dry feel, has moderate drape properties, and has a nice heathered texture, with almost no pilling, and when made into a silky woven or knitted fabric, it gives a spun-like texture with high air permeability. It has the advantage of being able to

Next, the present invention will be specifically explained with reference to Examples.

Example 1 In the process shown in FIG. 2, polyester multifilament yarn 75d/6 with a heat shrinkage rate of 11% was used as yarn (A).
4f, viscose rayon multifilament yarn 75d/36f with a heat shrinkage rate of 1.2% was supplied as yarn (B), and fluid treatment was performed under the conditions shown in Table 1 to produce a composite yarn. The resulting yarn has many viscose rayon multifilament yarns arranged in the outer layer and polyester multifilament yarns arranged in the core. It was a screw. When this composite yarn is used as warp and weft yarns to create a woven fabric and dyed, it has a moderate drape, a rich dry feel, is bulky and spun-like, and has a fine grained heathered texture. A fabric was obtained.

When the anti-pilling performance of this fabric was investigated using the JIS I, -10761CI method, it was grade 5, and if
It showed excellent anti-pilling performance.

Table 1 Example 2 In the process shown in FIG. Nylon 6 multifilament yarn 75d/34f and two viscose rayon multifilament I yarns 75d/30F with a heat shrinkage rate of 1.2% were supplied as yarns (B) and (B'), and the results shown in Table 2 were obtained. Composite yarn was manufactured by performing fluid treatment under the following conditions. Mainly polyester multifilament 71-based and nylon 6 multifilament threads are tightly intertwined to form fine ring-shaped or arch-shaped loops in the 5-core part of the obtained yarn, and the outer layer is made of viscose. Rayon multifilament yarn is arranged, and many relatively large ring-shaped or arch-shaped loops of viscose rayon are formed on the surface layer of the yarn, and some of the loops formed in the core are intricately entangled with these. The appearance was similar to that of wool.

Table 2

[Brief explanation of drawings]

FIG. 1 is a side view showing an example of the yarn of the present invention, and FIG. 2 is a schematic diagram showing an example of the manufacturing process of the yarn of the present invention. FIG. 3 is a schematic view showing the other side of the manufacturing process for the yarn of the present invention. In the figure, (A) shows a multifilament yarn made of thermoplastic fiber, and (B) shows a multifilament yarn made of recycled fiber. Patent Applicant Uni: J+: 11 Co., Ltd. 3 Diagram Procedural Neiff Authorization (Spontaneous) February 8, 1980 1, Indication of Case Patent Application No. 1982-217004 2, Name of Invention Composite Thread 3, Amendment Relationship with the case of a person who does
Koki Co., Ltd. Patent Department Tel: 06-281-5258 (Dial-in) 4. Subject of amendment (1) Detailed description of the invention column in the specification (2) Contents of drawing amendment: 1) Specification page 8 Correct “multi-layered part” in line 15 to “ri” (open sound do). (2) Correct Figure 1 as shown in the attached sheet (“a” replaced with “b”).
and corrected "b" to raj ("J-ru").

Claims (1)

[Claims] (1) A yarn in which a multifilament yarn of thermoplastic fiber and a multifilament yarn of recycled fiber are intertwined with each other, and the multifilament yarn of thermoplastic fiber is composed of filaments with a fineness of 2 denier or less, and is made of recycled fiber. The filaments that have a heat shrinkage rate that is 5% or more higher than that of multifilament yarn and that constitute the multifilament yarn of thermoplastic fibers are arranged in a larger number in the core of the yarn, and constitute a multificimen 1 system of recycled fibers. A composite yarn characterized in that more filaments are arranged in the outer layer of the yarn, and loops are formed in the multifilament yarn of recycled fibers.