JPH0244939B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a novel and durable bulky knitted fabric that is excellent in bulk and dimensional stability and has a good feel and aesthetic appearance, and a method for producing the same.

(Prior art and its problems) Conventionally, bulky knitted fabrics cannot be manufactured using any fibers such as natural fibers, regenerated fibers, semi-synthetic fibers, synthetic fibers, etc.; Only very limited fibers such as wool fibers, acrylic fibers, polyester fibers, and nylon fibers can impart bulkiness, and bulkiness can be imparted to bulky yarns such as woolen yarns, false twisted yarns, and conjugated yarns. The knitted fabric has been constructed with the following.

The bulkiness of these fibers is limited to the ability to impart bulkiness by selecting thick or thin yarns based on the increase or decrease in the number of yarns due to piling or twisting of woolen or bulky processed yarns. Therefore, it has been impossible to produce a knitted fabric that is lightweight and has a stable bulkiness by arbitrarily selecting the bulkiness size.

In addition, conventional bulky knitted fabrics suffer from pilling due to friction, damage to the knitted fabric structure due to yarn breakage due to hooking, changes in form and dimensions due to use and washing, and a decrease in bulk and texture. These drawbacks have been considered to be essential to bulky knitted fabrics, resulting in textile products with low durability.

As a result of intensive research to develop a bulky knitted fabric that solves the above-mentioned problems, the inventor has discovered that it is possible to knit and weave using wool or bulky processed yarn, which is the constituent yarn of conventional bulky knitted fabrics. First, the present invention was achieved by discovering that the above-mentioned problems could be solved by knitting with yarn having a texture.

(Structure of the invention) That is, the present invention has a bias structure with a width of 3 mm or more.
This bulky knitted fabric is characterized in that it is knitted with bulky band-like yarn, in which at least one sewing thread is sewn in the longitudinal direction of a 50 mm band-like thread, and both ends of the band-like thread are raised.

In addition, in the method for producing a bulky knitted fabric of the present invention, the width of the fabric is 3 mm to 50 mm at an angle where the fabric structure becomes a bias structure.
A series of belt-shaped threads are cut into strips, at least one sewing thread is continuously sewn in the longitudinal direction of the threads, and both ends of the strip-shaped threads are brought into contact with an abrasive material and abraded to raise the raised bulky threads. It is characterized by:

Width: 3 mm made of bias structure used in the present invention
~50mm band yarn refers to natural fibers such as cotton, silk, hemp, and wool, recycled fibers such as rayon and Kyupra, semi-synthetic fibers such as acetate and Promics, nylon,
Fabrics woven from yarns made of one type of fiber such as synthetic fibers such as polyester, acrylic, polypropylene, polyclar, etc., or yarns made by blending, doubling, or twisting at least two types of fibers are used for warp and Width 3 at the angle at which the weft forms a bias weave
It is a belt-shaped yarn cut into strips of mm to 50mm.

When cutting the fabric into a bias weave, the bias weave may be formed and cut at any appropriate angle to the warp or weft, but a 45 degree angle, ie, a positive bias, is most preferred.

If the belt-shaped yarn cut from the fabric does not have a bias texture, the fibers that make up the belt-shaped yarn, that is, the warp or weft, will easily fall off, resulting in spots in the fiber density and uneven strength of the belt-shaped yarn. Therefore, it cannot be put to practical use in knitting or weaving.

When the band-shaped yarn has a bias structure, it can maintain a homogeneous shape and strength without causing movement or shedding of the constituent fibers.

In addition, the width of the band-shaped yarn having a bias structure is determined based on the bulkiness of the intended knitted fabric.
It may be appropriately selected within the range of mm to 50 mm.

In particular, for clothing, the width of the band-shaped yarn is preferably in the range of 5 mm to 10 mm from the viewpoint of functionality, aesthetics, and heat retention.

If the width of the band-shaped thread is less than 3 mm, the tensile strength in the longitudinal direction of the band-shaped thread is small, and it becomes difficult to manufacture the band-shaped thread because it is easily cut during cutting or sewing the sewing thread in the next process. Moreover, if the width exceeds 50 mm, it becomes difficult to produce a knitted fabric and the product lacks flexibility, which is not preferable.

When cutting to the above-mentioned width, it is cut into individual discontinuous strips of thread, or it is not cut at the ends of the fabric, but is folded back and connected to form a series of threads. Alternatively, after sewing a wide woven fabric with a constant width to a long woven fabric of positive bias and winding it up in the longitudinal direction, the rolled fabric is cut at a constant width in the longitudinal direction to obtain a long belt-like yarn. Any method can be used to obtain the yarn, but in terms of work efficiency, the method of forming a long belt-like yarn is most suitable.

When individual discontinuous strip-shaped strips of thread are made by the above-mentioned method, the strips of strip-shaped thread are connected to form a series of strips before or at the time of sewing the sewing thread to the strip of thread in the next step. There is a need. In either case, at least one sewing thread is sewn along the longitudinal direction of the band-like thread.

This sewn thread has the function of a reinforcing thread that imparts strength to the band-like thread.

If there is no sewn thread or reinforcing thread, it is necessary to sew the thread into the strip by an appropriate means, preferably a sewing machine, since the strip has a low tensile strength in the longitudinal direction and is easily cut.

The stitch spacing of the sewing thread may be appropriately selected and determined depending on the thickness of the band-shaped thread. Regardless of the type of fiber that makes up the strip, any sewing thread can be used, including natural fibers such as cotton, silk, and hemp, recycled fibers such as rayon, semi-synthetic fibers such as acetate, and synthetic fibers such as nylon and polyester. It is.

Particularly from the viewpoint of strength, sewing threads made of natural fibers or synthetic fibers are suitable. The sewing thread may be sewn in any shape such as a linear shape, a loop shape, or a zigzag shape along the center line of the belt-like thread or its periphery, and it is necessary to sew the thread continuously in the longitudinal direction of the belt-like thread. or,
Two or more sewing threads may be sewn at appropriate intervals to serve as reinforcing threads.

If the sewing thread, which is the reinforcing thread of the band thread, is discontinuous,
This is undesirable because it causes changes in the shape and dimensions due to the cutting of the belt-like yarn due to its strength and loosening of the structure of the knitted or woven product.

Width 3 consisting of the bias structure obtained in this way
A series of band-shaped threads having sewing threads serving as reinforcing threads in the longitudinal direction of mm to 50 mm are then fixed with an abrasive material so that both ends of the band-like threads are in contact with the abrasive material.
By continuously running the strip yarn and rubbing it, both ends of the strip yarn are raised.

As the abrasive material that can be used in the present invention, any material with a roughened surface such as paper, cloth, nonwoven fabric, net, sponge, plastic, etc. can be used.
For example, knitted fabrics made of nylon or polyester fibers, nonwoven fabrics, synthetic resin foams, paper, cloth made of cotton or hemp are used as a base material, and abrasive grains such as alundum, carborundum, diamond sand, alumina, garnet, etc. are applied to the surface. An abrasive material prepared by adhering is suitable.

The fiber length of the raised fibers obtained by the raising treatment on both ends of the band yarn is at least 1 mm, preferably 2 mm or more, and when it is made into a knitted or woven product, it gives a good texture and aesthetic appearance. The commercial value of the knitted and woven products thus produced is significantly inferior and lacks practicality.

Width 3mm to 50mm made of bias structure according to the present invention
The bulky band-like yarn, which has sewing threads in the longitudinal direction of the band-like yarn and has raised ends on both sides, can be used for hand-knitting, weaving, or knitting by hand or by plying or twisting.
It can be knitted by any method such as machine knitting or weaving.

Further, by combining conventional woolen yarns, bulky processed yarns, or ordinary general fiber yarns with the bulky belt-like yarns of the present invention, or by changing their color tones, interesting knitted fabrics can be produced. be able to.

In addition, the dyeing of the knitted fabric according to the present invention is carried out by dyeing the fabric before cutting it into a bias weave, and by dyeing and raising the fabric either before or after sewing the reinforcing yarn into the belt-like yarn, according to the conventional dyeing process. Dyeing can be carried out by appropriately selecting any process, such as dyeing after treatment or dyeing after making knitted fabrics.

(Effects of the Invention) According to the present invention, it is possible to manufacture bulky knitted fabrics using any type of fibers that have conventionally been impossible to manufacture bulky knitted fabrics, and the width of the band-shaped yarn shown in the present invention can be adjusted. By selecting the length, desired bulkiness can be imparted to the knitted fabric, and furthermore, the generation of pilling due to friction, which has been considered a drawback of conventional bulky knitted fabrics, can be achieved.
Damage to the textile structure due to yarn cutting due to hooking,
This is a new bulky knitted fabric that eliminates all problems such as changes in form and dimensions due to use and washing, as well as deterioration in bulk and texture.

In particular, it is a breakthrough that the present invention has made it possible to produce bulky knitted fabrics for silk fibers, which have traditionally been used only in kimono and clothing products as high-grade fibers, making it impossible to produce bulky knitted fabrics. That's what it is.

Furthermore, it goes without saying that all silk fabrics, kimonos, clothing fabrics, and clothes can be reused as the bulky belt-like yarn that constitutes the present invention. The present invention has excellent value in terms of effective utilization of resources, as it enables the production of bulky knitted fabrics.

The knitted fabric according to the present invention is suitable for various products such as clothing, personal items, bedding, decorations, and interior products.

Examples will be shown next, but the present invention is not limited thereto.

Example 1 Silk fabric (twill habutae) was made with widths of 2 mm, 3 mm, 5 mm, 10 mm, 13 mm, and 25 mm at an angle to form a positive bias structure.
Cut 8 types of mm, 50mm, 53mm,
Each series of strips was prepared.

The 2 mm wide yarn had a low tensile strength during cutting, so it frequently broke and a series of strips could not be obtained.

Next, a single piece of cotton thread was sewn in a straight line along the longitudinal center line of each band-like thread with a sewing machine at a stitch interval of 2 mm to obtain a reinforcing thread. Furthermore, an abrasive material with abrasive grains attached to a nylon non-woven fabric is fixed in a length of 10 cm so that at least both ends of the belt-like thread are in contact with each other, and the belt-like thread is run to raise a series of belt-like threads to form a bulky belt. After making it into yarn, a sweater was knitted using an automatic knitting machine or hand knitting.

Thread strips with a width of up to 13 mm were knitted using an automatic knitting machine, and those with wider widths were knitted by hand.

When the width of the band yarn exceeds 50 mm, knitting becomes difficult and the product lacks flexibility. During the napping process, the napping on both sides of the strip yarn is particularly 2mm.
In the above cases, the knitted product had a good texture and a beautiful appearance.

In addition, band yarns with a width of 5 mm to 10 mm have excellent workability in processes such as sewing with a sewing machine and raising treatment, and are also suitable for use as sweaters due to the texture, flexibility, and bulkiness of the knitted product. It was perfect.

Furthermore, when these sweaters were washed with water, they did not lose their shape, had excellent dimensional stability, and maintained good texture and bulk.

In addition, using the silk fabric as a subject, a width of 5 mm was measured parallel to the weft without forming a bias structure.
As a result of adjusting the band-like yarn by cutting it in mm, the fibers in the horizontal direction of the band-like yarn easily fell off, making it impossible to obtain a homogeneous band-like yarn.

Example 2 A rayon fabric (dioset) was cut to a width of 7 mm at an angle to form a positive bias weave, and then sewn in a straight line with a stitch spacing of 3 mm using polyester sewing thread according to the method shown in Example 1, and then raised. A bulky band-like yarn having a nap fiber length of 2 mm was obtained by the treatment. Next, a shear was woven using an automatic knitting machine. As a result, it had excellent bulkiness and texture, good heat retention, and did not change in size or lose its shape even with use.

Example 3 A polyester fabric (taffeta) was cut to a width of 10 mm at an angle to form a positive bias structure, and then reinforcing thread was sewn continuously in a zigzag pattern along the longitudinal center line using polyester sewing thread. The napping process was carried out in the same manner as in step 1, and the napping fiber length was 3 mm.
A bulky band-like yarn having the following properties was obtained. Next, matte was woven using a manual loom using bulky band yarns for the warp and weft, resulting in a product with excellent bulk and dimensional stability.

Claims (1)

[Scope of Claims] 1. Knitted with a bulky band-like yarn made of a bias weave, with at least one sewing thread sewn in the longitudinal direction of the band-like thread with a width of 3 mm to 50 mm, and both ends of the band-like thread are raised. A bulky knitted fabric characterized by 2. The bulky knitted fabric according to claim 1, wherein the bias structure is a silk fabric. 3 Width 3mm at the angle where the textile structure becomes a bias structure
After cutting it to ~50mm to form a series of belt-like threads and sewing at least one thread continuously in the longitudinal direction,
A method for producing a bulky knitted fabric, which comprises knitting and weaving with a bulky band-like yarn obtained by bringing both ends of the band-like yarn into contact with an abrasive material and abrading it to raise it.