JPS59112019A - Fiber with cracks and spun yarn therefrom - Google Patents

Abstract

PURPOSE:The titled fiber that has crevasses cutting toward the inside of the fiber and a specific ratio of crevasses separating the fiber cross section, thus showing good antipilling properties and water absorption characteristics. CONSTITUTION:The objective acrylic fibers have crevasses cutting inward the cross section, preferably of 1-100mu length, 0.1-3mu maximum width and/or 1- 10, per 20mm. fiber length, of crevasses which divide the fiber cross section into 2 or more pieces, thus keeping good spinnability and post-processability. The angle between the crack direction of the crevasses and the fiber axis preferably is in the range of 0<=theta<=70 deg..

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fiber having flavour-like fissures and a spun yarn containing the fiber, which has excellent functions in terms of anti-pilling properties, water absorption properties, etc. For more details,
Length 1-100β on the surface of single fiber, maximum 0.1-6μ
The fissure, which is a V-shaped inward cut with a size of be.

Synthetic fibers have excellent mechanical properties, color development, and good texture, and are widely used in various textile products including clothing. On the other hand, the demands on textile materials have recently become extremely wide-ranging and diverse, with demands for not only beautiful appearance but also functionality.

However, when it is widely used for clothing, interior decoration, etc., repeated washing and use tends to cause pilling due to its mechanical performance, which significantly impairs its beauty and texture.

Various methods and products for improving the anti-pilling properties of synthetic ultrafine materials have been proposed. Most of the fibers are manufactured using special polymers, polymerization, spinning, and post-processing during the manufacturing process.
This method uniformly lowers the mechanical properties of the fibers, but the manufacturing process becomes complicated and the productivity is low, so the benefits are extremely small. On the other hand, Japanese Patent Publication No. 5B-5863 and Japanese Unexamined Patent Application Publication No. 1285-1985 attempt to impart anti-pilling properties by physically damaging textile products.
No. 24 is required. All of these are related to acrylonitrile polymers, and the fibers are heated in the form of a tow to soften them, and then pressure is applied using a stuffer box-type crimp/bar, etc. to virtually maintain their tensile strength. However, it also reduces the hooking strength. However, in order to reduce the strength with this method, the double pressure and box pressure of the crimper must be extremely strong, and small scratches may occur such as fusion of fibers and cut threads, which may deteriorate the shape of the tow. is localized in buckled areas, and mass breakage, slabs, and neps occur especially in spinning starting from the tow, such as in parlock and turbo methods. Also,
Even if it is cut with a knife to make staples and then subjected to the normal spinning process, problems such as poor FM fiber properties and frequent occurrence of neps occur. Additionally, there is a problem that the feel of the product deteriorates. Anti-Virkaloe has been considered for chemical fibers for a long time, but
Product needs: The number of blended products of synthetic fibers and natural fibers such as wool is increasing, and yarns and products made of ultra-fine 100-thick chemical fibers that have been subjected to anti-build treatment have satisfactory anti-pilling properties. However, products blended with natural fibers have not been able to fully demonstrate their performance. On the contrary,
Japanese Patent Laid-Open No. 57-56539 attempts to impart anti-pilling properties by physically damaging wool as a natural fiber. In this process, the wool sliver is fully compressed and heat treated to create an indentation on the heel of the fiber. but,
In order to maintain anti-pilling properties in such an indentation, II'i
There is a problem in that it is necessary to make a large number of impressions on the fiber surface, which roughens the multi-fiber surface and destroys the unique texture of natural fibers.

The present invention has been made to solve the above-mentioned conventional drawbacks. The purpose is to create fibers with cracks that maintain good spinnability and post-processability without impairing the original percent properties and texture of the raw material fibers, and anti-pilling properties using fibers with.
We are proposing a spun yarn that exhibits excellent functions not previously available in terms of water absorption and other properties.

The gist of this invention is that a flavus-like bag with a V-shaped incision into the inside of the fiber has an eye and/or a fiber cross section that is divided into two or more parts, and a frebus-like bag that has an eye of 91 or more pieces per 20 eyes;
These are fibers with cracks t4r characterized by the presence of 0 or less cracks, and spun yarns containing 60 or more of these fibers.

The flavour-shaped fissures of the present invention will be explained with respect to fibers having a mesh portion and spun yarns containing the fibers.

Here, the shape and number of flavus-like cracks are important from the viewpoint of post-processability and spinnability, and they greatly affect process performance and quality, such as fiber breakage and the occurrence of fries. Also, thread.

It also has a significant impact on the product's texture, anti-pilling properties, water absorption, and other functions. In this way, the flavus-like fissures have great significance in limiting the shape and number of eyes.

In pilling, short fibers are entangled around several single fibers with a length of 10 to 201 Im to form small tufts, lumps, or balls. In order to remove the pilling that occurs there, it is necessary to have at least a frebas-like crack with a single grain length of 20 m.
111 must be one or more. Preferably 1
More than 1 in 00. However, if the number of twists is too large, it may cause fiber breakage during the spinning process, roughen the surface of the fibers, and impair the unique texture of the fibers.

In general, the stress concentration effect on defects is greater in cases where there is a sharp crack in platinum, and the shape is V-shaped.

The frebus-like fissures have a great effect on the mouth.

In addition, frebus-like bags have a long mouth, long throat hooking strength and low elongation, and are excellent in anti-pilling properties. will increase. This is what I like about short laces.
The length is preferably 1 to 100μ, with a maximum of 001 to 6μ. The openings of the indigo fibers are not localized on the surface of the single fibers, but are scattered along the length of the fibers.

The fibers of the present invention include polyamide yarn, polyester yarn,
Synthetic fibers such as polyacrylic yarn, polymodified acrylic, and biosynthetic fibers such as acetate yarn.

Chemical fibers such as recycled artificial fibers such as rayon, and wool;
Natural fibers such as animal hair, silk, and cotton are used, but polyacrylic yarn, synthetic fibers, and wool are particularly preferably used.

Next, the method for manufacturing the fiber of the present invention will be explained. When manufacturing the fiber of the present invention using chemical fibers, patent application No. 1987-
No. 97299, Japanese Patent Application No. 158066, No. 1983, Japanese Patent Application No. 1983
No. 7-158065 In addition, when producing the fiber of the present invention from natural fibers such as wool, the method described in Japanese Patent Application No. 57-158065 can be carried out while contacting with a cooling medium at -5° C. or lower, or immediately after contact. V is applied to the single fibers that make up the fiber bundle by applying shearing force to the extent that the single fiber force does not break.
The bag is shaped like a letter and has an internal cut.1/ The lotus-shaped bag has a mouth. In addition, creno-shaped cracks can be generated by buckling the material while contacting it with a cooling medium at -5° C. or lower, or immediately after contact with a stuffer box-type crimp hole.

The shape of the mouth of this flevas-like bag is explained in detail by casting a model diagram. The cracks are caused by cooling the fibers at the mouth and applying shearing force when the elongation is extremely low, causing them to deform. Therefore, cracks tend to form almost parallel to the fiber axis, like when bamboo is crushed. . FIG. 1 (α) shows a state in which a crack #1 is parallel to the fiber axis 3 and a crack 2 is generated on the surface of the single fiber 10. tb) is a state in which the crack has a slight inclination θ with respect to the fiber axis 3, and the opening 2 is generated and becomes smaller. (C) is almost parallel to the fiber axis 3, but there is a step-like crack in which the mouth part 2 is erupted. (d) is θ≦70° with respect to the fiber axis 3 (l: the opening is open as if it is being cut, and the white part 2 is under pressure in the tear. Ce1) (ez) is the state in which both types of Irregular M side gold also comes out in the case of fiber 4, fiber axis 3 in the central part of Kuhonta.
The fissure is almost parallel to , indicating that the mouth 2 has formed. Here, θ is assumed to be a smaller angle antithesis that is complementary to each other.

FIG. 2 is a side view of 4 fibers 1, showing that the opening is cut into the inside. V) is a fissure in which the mouth part 2 cuts into the inside of the single wood fiber l in a V-shape. (g) The cleft is the mouth part 2
shows the state in which the cross-section of a single filament is divided into several parts. Here, the fissure is V-shaped, with the opening cut into the inside of the fiber, and the tip of the fissure is shaped like a 7J"1iii square.

For example, acrylic fiber (Kanmilon ■ manufactured by Asahi Kasei Industries)
? When the mouth of the frebus-like fissure is generated in >d, the shape of the frebus is (α) > (bJ > tc)O)
Most of the cross-sectional shapes were (g). 15d
Most of the cross-sectional shapes were VJ. But wool 6
In 08, the frequency of frebus-like fissures at the mouth was (
b)〉(α) > (d) Some of the specimens had progressed to the state of (d) and were cut diagonally and had a pointed tip. Also, I was satisfied with Tontoka (1) for the cross-sectional shape.

1, Akul fiber (Asahi Kasei Industries Co., Ltd. Cashmiro/■) 6d
Flebast-like cracks occur in the fibers that have a large and irregularly shaped cross section, and in the case of fC, frebus-like cracks occur almost parallel to the fiber axis in the solder part, such as tonto (e < 62). A mouth part has occurred, and the cross section is (1)>(g), but there are also more shapes in which <6d is divided into 6d as shown in (g) than in the circular cross section.

Next, the water absorbency of the fiber of the present invention will be explained. Various types of water-absorbing fibers have been proposed in the past, using special polymers and spinning in the fiber manufacturing process.

After post-treatment, the fibers have a unique irregular shape to T-side, a highly uneven surface shape, or a structure with holes inside the fibers, and are more expensive than natural fibers. Are these fibers homogeneous and the same spinning oil as the fibers? When spinning several layers, the surface area of the fiber is large or the oil gets into the inside of the fiber, so there is less chance of surface adhesion9. This causes problems such as poor spinnability and poor yarn quality. On the other hand, if the glossiness of the oil agent is increased, there are problems such as the roller winding angle due to the glaze layer of the oil agent and the oil agent permeating into the interior, resulting in a decrease in water absorption.

After the fibers of the present invention have been subjected to a normal surface adhesion rate, frebus-like cracks are generated from the inside at low temperatures, so the frebus-like cracks of the oil agent do not penetrate into the inside, and the oil agent is uniformly spread on the surface. is attached, so there are no problems caused by static electricity during spinning.

In addition, the Hl fiber of the present invention has a V-shaped opening that is narrow and deep, and the frebus-like crack opening extends in the range of 0°≦θ≦70° with respect to the fiber axis. , most of which are in the /Y half-line, and have good water absorbency, absorbing moisture like capillary tubes.

Example 1 A 500,000 d tow composed of 6 denier (d) polyacrylonitrile fibers was heated to 150'C as a cooling medium (house gas).
Immediately after touching the fibers for 60 seconds, apply shearing force to the extent that the single fiber does not break with a rubbing roller, and spin at a spinning speed of 50.
A tow consisting of fibers with a frebus-like crack inside was installed at m/min. Next, after cutting the fibers to a predetermined length, a normal spinning process is performed to create 1/40 (Nm) twist number of 5.
A jersey was entirely knitted by combining two 00 ('M glue/g spun yarns, Samurai and N), and its properties were measured.Furthermore, as a comparative example, the above raw material tow was cut and spun under the same conditions. A blended product with the above-mentioned anti-build varnish sliver was evaluated.

Results As is clear from this table, the difference of 5.6 in the non-inventive sample was small, but the hooking strength and elongation were significantly lower, and the r and -t pilling properties were very good. Reed water absorption rate is also 1
It was possible to improve the conventional acrylic fiber by reducing the amount by 2.6%. There were no problems with cutting the coffin fibers or flying during the spinning process.

Eita, a blend of 60% of the present invention is also anti-pilling Note 4M
1. Example 2 Acrylic fiber (single fiber denier 5d, 15d.

6d (both types of irregular cross-section)) and wool 608 are cooled for 20 seconds at an ambient temperature of -80°C, and then applied with a pair of upper and lower rubbing rollers to shear the fibers to the extent that the single fibers are not cut. The amount and shape of the inside of the flavus-like pouches were examined.

(a), (b), (c) shown in the model diagram
-) shape with a length of 1 to 100μ and a maximum width of 0.1
~3μ occupies the majority.

In addition, in irregular cross-sections such as both types, the number of cracks is more likely to occur in the narrow part of the cross-section, and the shape of <(3) is more common than the circular shape.

(b), (91, (d,) shown in the model diagram
The cross section is mostly shown in (f).

Example 3 A sliver made of wool product No. 58 was brought into contact with nitrogen gas at -40°C for 45 seconds, and then shearing force was applied immediately to an extent that the single fibers would not break. The frebus-like cracks were made by using 30% wool fiber sliver with grain, 60 rolls of the anti-pilling varnished sliver obtained in Example 1, and 40% acrylic regular fiber having a shrinkage capacity of 2° to make the sliver. 32 meter number (Nm) (number of first twists: 2 QOT/m, number of second twists: 340 T/m) (D-ring spun yarn, Pal 1000, knitted into sweater fabric after dyeing) did.

In addition, as a comparative example, 30% untreated wool sliver, 60 strands of anti-pilling coated sliver obtained in Example 1, and 40% acrylic regular fiber with shrinkage capacity (20%) were used.
The physical properties and product characteristics of wool were evaluated for the blended yarn.

Result 1 Result 2 As shown in the table above, the wool blend yarn with anti-pilling treatment has excellent anti-pilling properties even in loose seime knitting made of bulky yarn with 20% shrinkage. can be obtained.

Moreover, the texture was also good.

Example 4 One 12 slivers composed of 6d polyester fibers
After contacting with nitrogen gas at 0°C for 60 seconds, shearing force is applied by immediately pushing it into a staff ink box type talin bar, and the flavour-like fissures are made into fibers with eyes.
This was evaluated for anti-pilling properties and water absorption as in Example 1.

Even if you use Scrutifk ink or a box-shaped crimper,
Since it was spun at a low temperature of -120'C without heat fusion, its anti-pilling properties and water absorption properties were greatly improved. In addition, the spinnability of the sliver was excellent.

This invention is as described above, and brings about the following effects.

■ The chemical fibers and natural fibers of Kumpus-like bags have a mesh fc of 20 MM and 1 to 1°, which maintain good spinnability and post-processability without impairing the original properties of the fibers, and improve water absorption.

■ Spun yarn containing 30% or more of this fiber has significantly improved anti-pilling properties and water absorption.

■ The wool/anti-pilling acrylic blend yarn made of 60% anti-pilling treated wool has good anti-pilling properties even in bulky sweaters with loose textures.

[Brief explanation of the drawing]

Figure 1 (α), (S, IC), (d), ←S)
1 (e2) is a cross-sectional view of (el), and 21.
JZ V) and (g) are cross-sectional views schematically showing the shape of the eye of the flavus-like bag of fibers.

Claims (3)

[Claims] (1) A flavus-like bag with a V-shaped incision into the inside of the M fiber has an eye and/or a fiber cross section fc, which is divided into 2 or more pieces.A flavus-like bag has an eye of 91 or more and 10 or less per 20 eyes. Fibers with cracks characterized by: (2) The cracked fiber according to claim 1, wherein the flavour-like bag has an eye having a length of 1 to 100 μm and a maximum size of 01 to 6 μm. (3) The flavour-like bag has a crack according to claim 1, wherein the angle θ formed by the direction of the crack in the eye and the fiber axis satisfies 0°≦θ≦70°. fiber. (Here, θ is the smaller angle that is complementary to each other.) (4) A flevous bag with a V-shaped cut into the inside of the fiber divides the eye and/or the fiber cross section into two or more. The flavour-shaped bag is a spun yarn containing 60% or more of fibers having cracks of 1 or more and 10 or less per 20 fibers.