JPS6224533B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flat yarn made of a spun yarn having a novel texture.

There are many types of flat yarns made by aligning filaments or spun yarns in parallel and treating them with heat or impregnating them with a solvent, melting or dissolving the fibers and bonding them together to form a single filament. It has been known. For example, Japanese Patent Publication No. 34-8196 discloses that various multifilaments made of polyamide, polyester, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, and polyacrylonitrile are impregnated with water, and then the individual filaments are crimped to adhere. However, a technique for manufacturing flat yarn by heating at 100°C or higher has been disclosed. According to this manufacturing method, each single yarn of the multifilament is flattened, and at the same time, a single flat yarn in which the single yarns are completely adhered to each other can be obtained. Also, Special Publication No. 18384, Special Publication No. 18384, Publication No. 18384, Special Publication No. 18384
Publication No. 12616, Japanese Utility Model Application No. 53-45443, and Japanese Patent Application Publication No. 1987-45443
Japanese Patent No. 57-101032 discloses a flat yarn in which a multifilament is impregnated with a solvent and bonded by heating. In all of these flat yarns, the individual filaments are in close contact with each other, and the surface portions of the fibers are melted or melted using heat or a solvent while maintaining this state to bond the filaments together. be. These flat yarns have a smooth and hard feel because the filaments are closely bonded to each other, and although they are excellent in this respect, they are too rough and hard to use for clothing, and are not necessarily suitable for use in clothing. It's hard to say it's suitable. Further, in Japanese Patent Publication No. 49-42880 and Japanese Patent Application Laid-open No. 53-45443, spun yarns made of acrylic fibers are impregnated with the solvent, and then bonded to a heated roller to adhere the spun yarns to each other. Flat yarns are disclosed. The invention described in Japanese Patent Publication No. 49-42880 impregnates a spun yarn of acrylic fiber with a solvent for the fiber, presses only one side of the spun yarn against a heated roller, and dries it while pressing. It is something. The yarn obtained by this method is one in which the single fibers on one side of the spun yarn pressed against the roller are lined up in the horizontal direction and welded, and at the same time, the part that is in contact with the roller becomes a flat surface, creating a glossy surface. It is. Each single yarn of the spun yarn on the side that is not pressed against the roller is not welded and has a soft feel. This yarn has a special texture because it has a hard part and a soft part in the same thread, but the hard part has a strong adhesion between each single thread, and at the same time Because it has a wide flat surface, it has the disadvantage of being too hard, and the yarn itself is far from a flat yarn. Also, JP-A-53
- The invention described in Publication No. 45443 impregnates a bulky yarn, for example, a filament called roving in a spinning process with a solvent, and heats and presses it with a roller, so that each single yarn sticks together and adheres. This invention relates to flattened yarn and its manufacturing method. The flat yarn of this invention also has a rod-like or film-like flat yarn with a hard texture because each of the single yarns constituting the yarn is in close contact with each other and bonded together. It does not have specific characteristics.

The present inventor completed the present invention as a result of intensive research in order to obtain a flat yarn that has a new form not seen in conventional flat yarns and is flexible but has excellent shape retention. It is something.

That is, in the present invention, a plurality of spun yarns having fluff on the surface are lined up in the length direction at intervals,
The fluff on the surface of the spun yarn is in contact with other spun yarns or with the fluff of other spun yarns, and the fluffs adhere or fuse in the contact area to integrally connect adjacent spun yarns. It is a flat yarn made of spun yarn.

The flat yarn of the present invention is an integrated flat yarn in which the spun yarns are lined up at intervals, and the spun yarns are bonded to each other by the contact of the fluff on the surface. It is a flat thread with a new shape, with a certain spacing between the threads. Furthermore, since the fluff on the surface of the spun yarn acts as a binding medium for binding between the spun yarns, the flat yarn has a much more flexible feel compared to conventional flat yarns of this type. ,
In addition, since the adhesion can be firmly performed, each spun yarn will not come apart. Therefore, the flat yarn of the present invention, which has features not found in conventional flat yarns, is extremely valuable.

FIG. 1 is a model diagram showing the flat yarn of the present invention. In FIG. 1, 1 is a spun yarn, 2 is a fluff on the surface of the spun yarn 1, and the fluff 2 is adhered to the spun yarn 1. The spun yarns 1 are bonded to each other by fluffs 2 and are integrated, forming a flat yarn as a whole.

The spun yarn 1 is a single yarn, double yarn, or more spun yarn, and its form and count are not limited in any way and can be appropriately selected in consideration of the flexibility and texture of the flat yarn to be obtained. The flat yarn of the present invention is characterized in that the spun yarns are integrally bonded to each other by the fluff present on the surface of the spun yarn 1, so it is necessary that the surface of the spun yarn 1 has the fluff 2. be. The fluff 2 on the surface of the spun yarn 1 may be made of fibers constituting the spun yarn 1, and its length is preferably 0.1 mm or more because if it is too short, adhesion due to contact with the spun yarn itself tends to occur. .

The adhesion of fluff 2 is the adhesion of the fluff between adjacent spun yarns, the fluff of one spun yarn is adhered to the other adjacent spun yarn itself, or some of the fluff is attached to each other, and the other part is attached to the spun yarn. There are various modes for adhering to the substrate itself, and any mode may be used.

The number of spun yarns constituting the flat yarn of the present invention is two or more, and the upper limit is not particularly limited, but approximately
100 or less is preferable. Also, the spacing between spun yarns is 0.1
~10 mm is preferred. If the interval is smaller than 0.1 mm, the spun yarns tend to adhere to each other, making it difficult to obtain the flat yarn that is the object of the present invention, and if the interval is too large, the processability and handling of the flat yarn become difficult. becomes worse.

The fluff present on the surface of the spun yarn of the present invention refers to whisker-like single fibers extending outward from the spun yarn and loop-shaped single fibers floating outward from the spun yarn. Further, in the present invention, a plurality of spun yarns are integrally bonded by adhering the fluffs to each other or the fluffs and the spun yarns themselves, and there is a constant interval between the spun yarns. This is different from conventional adhesive-based flat yarns.

As mentioned above, in the flat yarn of the present invention, the spun yarn and the spun yarn are bonded by adhesion or fusion of the fluff on the outer surface, and the adhesion by the fluff is different from the bonding of conventional filaments. Unlike flat yarn, in which each filament is bonded all over its length, the soft texture of the spun yarn is less likely to be impaired. Furthermore, the flat yarn of the present invention has a space between the spun yarns,
By providing this interval, the flexibility of the spun yarn can be maintained. In addition, by creating a space between each spun yarn, it visually gives the impression that the spun yarns are lined up in parallel at first glance, and it has a unique visual effect as a form of flat yarn. It is something.

The fibers constituting the flat yarn of the present invention are conventionally known fibers such as natural fibers, synthetic fibers, and regenerated fibers, but synthetic fibers are preferred because the flat yarn can be easily produced. Examples of synthetic fibers include polyamide fibers, polyester fibers, and acrylic fibers. The spun yarn made of these fibers may be made of only one of these fibers, or may be made of at least two of these fibers. Further, these spun yarns may be single yarns, double yarns, or more spun yarns, and furthermore, rovings etc. in the spinning process can also be used. These spun yarns must have large fibers called fluff that extend outward from their surface, or loop-like fibers that float on the surface of the spun yarn.

The flat yarn made of the spun yarn of the present invention is produced by arranging a large number of the above-mentioned spun yarns with their fluffs in contact with each other, and then adhering or fusing the fluffs while maintaining this state. When arranging a large number of spun yarns, the spacing between them should be such that the fluffs touch each other, but depending on the length of the fluffs,
Alternatively, the flat yarns can be brought closer to each other in order to change the flexibility, texture, etc. of the flat yarns. However, when the spun yarns come into close contact, adhesion or fusing occurs over the entire length of the spun yarns, resulting in a rough, hard texture and a rod-like or film-like shape, which is undesirable. . Next, the fluff is bonded by impregnating the fibers that make up the spun yarn with a solvent.
The fibers can be bonded by melting the surface of the fibers, by impregnating them with an adhesive, or if the fibers are heat-fusible, by passing them through a heated atmosphere to bond the fluff. in this case,
As a solvent for fibers, polyamide fibers use formic acid,
Phenol and dimethylformamide are used for polyester fibers, mono- or dichlorobenzene, benzyl alcohol, and halogenated acetic acid are used for polyester fibers, and rhodan salt aqueous solution, zinc chloride aqueous solution, nitric acid aqueous solution, ethylene carbonate, dimethyl sulfoxide, dimethylformamide, and dimethylacetamide are used for acrylic fibers. etc. are preferable. These solvents can also be used in combination with other non-solvents. When bonding is performed using these solvents, a large number of spun yarns lined up are impregnated with these solvents or a solution containing the solvent.
Then, it is treated at room temperature to 180°C for several seconds to several minutes. In this case, the degree of adhesion can be adjusted by varying the amount of solvent impregnated, treatment temperature and time. After this treatment, depending on the solvent, it may be sufficient to simply dry it, but drying alone may make the texture too hard, so after washing and removing the excess solvent, Drying is preferred. Welding agents include vinyl acetate, acrylic,
It is preferable to use NR-based latex, NBR-based latex, or the like.

In addition, in the case of spun yarn made of heat-meltable fibers, a large number of spun yarns are lined up and passed through a heated atmosphere,
It is also possible to melt and fuse the fluff. In this case, the temperature of the heating atmosphere is 150° C. to 400° C., and the treatment is performed for several seconds to several minutes. When this method is applied to spun yarn using heat-meltable fibers, it is easy to preferentially melt and bond the fuzz on the surface of the spun yarn, and the fibers in the center of the spun yarn and the surrounding areas are bonded. Since there is almost nothing to do, it is possible to obtain flat yarn with a softer texture.

EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples.

Example 1 Ten spun yarns (No. 48, single yarn) made of acrylic fibers with a single yarn of 2 d and a cut length of 51 mm were lined up at 0.5 mm intervals, and were lined up in a direction perpendicular to the direction in which the spun yarns were lined up. Apply 10% mixed solution of 30% ethylene carbonate and 70% water to both sides of the spun yarn using a sprayer.
(owf) was applied, and then heat treatment was performed in air at 130°C for 10 seconds. The fluff on the surface of the spun yarn was well adhered to the obtained flat yarn, and it had a silky feel and at the same time had the feel of a spun yarn and appropriate flexibility. Furthermore, since there is a gap between the spun yarns, there is no film feel like that of flat yarns due to adhesion of filaments, and the product has excellent aesthetics.

Example 2 The short fibers used in Example 1 were made into 52 count spun yarn (double yarn), then five yarns were arranged at 1 mm intervals and treated for 5 seconds in an aqueous solution consisting of 10% dimethylformamide and 90% water. , squeeze the aqueous solution with a roller to 10%
After applying owf, it was treated at 110°C for 10 seconds. The obtained flat yarn had a smooth feel similar to the flat yarn obtained in Example 1, but had a softer feel. This is thought to be due to the longer spacing between the spun yarns.

Example 3 15 48 count spun yarns (single yarns) made of nylon 6 (single yarn 1.5 d, cut length 51 mm) were arranged at 0.5 mm intervals and treated in an aqueous solution containing 10% phenol for 10 seconds. After squeezing with a roller, squeezing with a roller,
After applying 10% owf to the aqueous solution, it was treated at 100°C for 2 minutes, washed with water, and then dried. The obtained flat yarn had a smooth feel and moderate flexibility.

Example 4 A 48 count spun yarn (single yarn) made of polyethylene terephthalate with a single yarn of 2 d and a cut length of 51 mm was
Fifteen pieces were lined up at an interval of mm, and they were continuously run in a nitrogen gas atmosphere heated to 300°C for continuous treatment so that the average residence time was 30 seconds. In the obtained flat yarn, the fuzz on the outer surface of the spun yarn is sufficiently fused, but the center and outer periphery of the spun yarn are hardly bonded.
Although it had a shiny feel, it was a flat yarn that was highly flexible and aesthetically pleasing.

Example 5 Ten spun yarns used in Example 1 were arranged at intervals of 0.5 mm, and 5% (o.
wf) and then dried in hot air at 100°C.
The fluff of the spun yarn was well adhered to the obtained flat yarn, and it had a silky feel.

[Brief explanation of the drawing]

FIG. 1 is a model diagram showing the flat yarn of the present invention. 1...Spun yarn, 2...Fuzz of the spun yarn.

Claims (1)

[Claims] 1. A plurality of spun yarns having fluff on the surface are lined up at intervals in the length direction, and the fluff on the surface of the spun yarn is in contact with other spun yarns or with the fluff of other spun yarns, A flat yarn made of a spun yarn in which adjacent spun yarns are integrally bonded to each other by adhesion or fusing of fluff at the contact portion.