JPS5936709B2 - Manufacturing method of hairy knitted fabric - Google Patents

Description

Detailed Description of the Invention The present invention provides a yarn in which filament yarns having different submergence shrinkage rates are simultaneously subjected to fluid entanglement treatment and entangled with each other to form intertwined portions and non-entangled portions intermittently in the length direction. The present invention relates to a method for producing a haired knitted fabric using the strips as the pile of a pile knitted fabric.

Conventionally, pile knitted fabrics using filament yarns have been created using tricot French pile knitting, in which the length of the pile yarn is 1.5 to 3 times longer than the ground yarn, or circular knitting sinker pile knitting. It has been known.

Also known is a machine that uses a mechanical patterning mechanism to create a pattern using long and short piles.

However, these methods do not pose any problems when using knitted fabrics using spun yarn, but when using filament yarn, the length of the pile may be uneven or the pile may be too long, causing snagging during wear.゛It has the disadvantage that it causes fluffing, scratches, snags, and tangles during the dyeing process, making it difficult to obtain a high-quality product.

This invention eliminates the drawbacks of pile knitting using filament yarn, such as snagging, and uses filament yarn to
The object of the present invention is to provide a method for manufacturing a high-quality haired knitted fabric that is less likely to cause snags.

In the present invention, a high shrinkage filament yarn and a low shrinkage filament yarn, both of which have a difference in submergence shrinkage rate of 10% or more and are non-drawn filament yarns, are subjected to fluid entangling treatment to be entangled with each other and intertwined in the length direction. A method for producing a knitted fabric with hair, characterized in that a knitted fabric is knitted using a yarn in which intermittent sections and non-entangled sections are formed as a pile yarn, and then the pile yarn is raised and then heat treated. It is.

The fibers with high submergence shrinkage used in this invention are preferably multifilament yarns made of thermoplastic synthetic fibers such as polyamide, polyester, and polyacrylonitrile, and the low shrinkage fibers are preferably multifilament yarns made of regenerated cellulose fibers. Filament yarns are preferred.

The length of the unentangled portion of the pile yarn is preferably in the range of 15 to 60 mm. If the length of the unentangled portion is 15 mm or less, the height of the pile will not be two layers, long and short.

Furthermore, if the length of the unentangled portion exceeds 60 m11 L, filament cracking and thread breakage may occur during knitting, which is not preferable.

In the fluid jetting process, the length of the multifilament yarn with a low heat shrinkage rate is equal to the length of the thermoplastic synthetic fiber filament yarn with a high heat shrinkage rate, or both yarns are fed and merged with an overfeed of 10% or less. Then, a high-speed fluid stream is injected almost perpendicularly to the merged yarns to entangle the single fibers or groups of single fibers while maintaining the aligned state without swirling, as shown in Figure 1. Like, unconfused part! , and the intertwined portions t2 can be formed intermittently.

Before heat treatment, this yarn has a focused form as a whole system and has almost no torque.

In this case, if one side of the supplied yarn is temporarily twisted and the filament yarn is intermittent entangled by a vertical fluid flow, even if the overfeed rate is 10% or less, the right side of the interlaced part and the non-twisted part are The interlacing pitch of the interlacing part t2 is 14 on average
7n11L or less, the temporarily twisted yarn is at the periphery of the yarn bundle,
That is, the sheath portion is made up of, and the non-crimped filament yarn is made up of the center portion, making it easy to generate torque.

Therefore, in the present invention, both of the yarns to be entangled are non-torque, non-warp processed filament yarns.

FIG. 2 shows a stitch configuration diagram in which the interlaced yarn of the present invention is applied to the pile yarn of sinker pile knitting for fabric insertion.

In the figure, a thermoplastic synthetic fiber filament yarn 2 with a high submergence shrinkage rate and a filament yarn with a submergence shrinkage rate 10% or more smaller than this, such as cellulose-based regenerated fiber filament yarn 1, do not penetrate into the fabric within the knitted fabric. Not only in the needle loops of the other temporary twisted yarns 3 that make up the section, but also in the sinker loops, the single fibers or groups of single fibers in the intertwined section are intertwined with each other, forming a pile stitch in a continuous state. do.

The best ground yarn is a temporarily twisted yarn, and it is preferable to use a yarn with as high a residual shrinkage rate as possible.

Furthermore, it is desirable that the denier composition ratio to the pile yarn be as close as possible.

After knitting such non-uniformly intertwined yarns into pile yarns, if appropriate napping is performed, the high-shrinkage filament yarn 2 and low-shrinkage filament yarn 1 will be raised simultaneously and uniformly to a uniform length. It becomes a stepped cut pile consisting of cuts.

A pile formation state in which the high shrinkage component shrinks significantly and is clearly divided into two layers within one stitch, with the low shrinkage filament component on the inside and the low shrinkage filament component on the surface layer, appears.

This is a structure that cannot be formed with other mixed yarns or composite yarns.

Furthermore, in the interlaced yarn of the present invention, the length of the unentangled portion is 1 on average.
Considering the runner 150-340cTV'Rack, etc., which has a length of 5 mm or more and has a pile length of 1.0 to 3.5 mm in a normal sinker pile knitted fabric, or a weave length of a pile tricot knitted fabric or a tricot raised knitted fabric. Even if it is inserted into the pile, the unentangled portion is maintained over several times or even times the pile length.

For this reason, it is possible to knit and feed multifilament yarns using the same technique as single yarn feeding or aligned yarn feeding, but rather, the interlaced yarn of this invention can be knitted in a more stable state. I can do it.

Furthermore, the pile effect within the knitted fabric does not change at all.

The raising in the present invention may be repeated raising using a cloth raising machine alone, shearing with a spile cutter, or a buffing device, or may be used in combination by changing the order as appropriate. good.

To easily and stably raise a pile made of non-uniformly entangled yarn without using any special equipment.

In other words, the entire pile can be cut and brushed, and no uncut portions can be seen.

On the other hand, in other methods that deviate from the method of the present invention, such as a method in which heat treatment is performed first and then napping is performed, heat shrinkage results in loop piles with long and short steps, and even when napping is done, some short piles remain uncut. Not only will the quality be impaired, but the number of finishing steps will be increased due to the need to increase the number of times the hair is raised, and in particular, a shearing and organizing process will be required, making it difficult to obtain a uniformly raised product.

In particular, the entangled yarn of this invention is made of thermoplastic synthetic fiber multifilament yarn with high shrinkage, and when subjected to heat treatment, the entire entangled yarn shrinks by several degrees, but the yarn length difference between the individual components is two layers. Since the opening is larger than the width of the pile, the thermoplastic synthetic fiber multifilament yarn 2 never shows its face on the surface of the pile knitted fabric.

Since the surface is covered with only one of the regenerated fiber multifilament yarns 1, the knitted fabric has the same appearance as knitted by single knitting.

As a result, for example, if the yarn length difference is about 35%, knitting is carried out using a sinker pile knitting machine with a pile sinker height of 2.7 mm, and heat treatment is applied after raising, the intertwined yarns The resulting pile height is approximately 2.5 basket height due to slight shrinkage of the recycled fiber multifilament yarn, while that of the thermoplastic synthetic fiber multifilament yarn and a short pile of 1.9 mm can be obtained. .

Furthermore, if the combination of intertwined yarns has a yarn length difference of more than 60%, the height of the short pile will be extremely low, around 1.5 mm, which is almost the same as that produced by a special two-stage pile knitting machine. You can obtain pile fabric that does not change.

FIG. 3 shows a stitch configuration diagram of an embodiment applied to a satin (IJ) texture.

In the figure, the non-uniformly intertwined yarns that make up the front yarn are drawn as if the cellulose-based regenerated fiber filament yarn 1 was separated from the thermoplastic synthetic fiber filament yarn 2 and loosened; 2 of the interlaced threads
The two components are simply drawn to avoid overlapping the dotted line and the solid line in the expression, and are shown to best understand the concept, and depending on the brushing, the length is the same, By the subsequent heat treatment, the entangled yarn components are clearly separated into 1 and 2, and the cut pile lengths also show a large difference.

In addition, in the same figure, since the ground yarn 4 forms the inner layer of the hollow knitted fabric due to the fabric structure, it rarely or rarely comes into direct contact with the clothing or cutter during raising.
As mentioned above, it has the same effect as the ground yarn 3 of the sinker pile knitted fabric shown in FIG.

Due to stiffness, for example, when an interlaced yarn with a yarn length difference of more than 40 threads was used as the front yarn of a 4-satin tricot weave using two reeds, the yarn length was in the range of 24 to 28 gauge and the weave course was 50 yarns. ~80 courses/2.54cm
The ground yarn is a regular polyamide or polyester filament yarn of 40 to 75 denier and has a flood shrinkage rate of 6 to 7%.
After brushing and hot water treatment, the pile height of regenerated fiber multifilament yarn of tricot fabric is approximately 2 to 3 times, while that of thermoplastic synthetic fiber multifilament yarn is approximately 3 times It has shrunk to the length that spans the wale, and the pile height is slightly shorter.

Furthermore, when the front swing width was expanded to 5 to 8 stitches by using three reeds, it was possible to obtain a long raised product with a raised cut length of 8 to 10 mm of the regenerated fiber multifilament yarn.

The thermoplastic synthetic fiber multifilament yarn for imparting the high potential shrinkage and yarn length difference possessed by the interlaced yarn of this invention is a polyamide-based, polyester-based, polyacrylonitrile-based, etc. total number of constituent filaments of 3.
If it is more than 100 mm, it is fine. Polyamide type is, for example, polyε-
Caproamide or polyhexamethylene adipamide, which is a copolymer of various amide-forming compounds, is used.

In addition to this, a copolymer of hexamethylene diammonium isophthalate may also be used.

Polyesters are those that use terephthalic acid as the main dibasic acid, and ethylene glycol or cyclohexane dimetatool as the main glycol, or ethylene oxybenzoate, and various esters. It may also be one obtained by copolymerizing a forming compound.

In addition to this, a copolymer of isophthalic acid or methoxypolyethylene glycol may also be used as a third component.

Here, if the amount of the third component added is 2.0 to 5.5 moles, a highly shrinkable yarn with a flood shrinkage rate of 20% or more can be obtained.

On the other hand, cellulose-based regenerated fibers are those spun using the viscose method or the copper ammonia method.

These flood shrinkage rates can be controlled not only by the stock solution but also by the manufacturing conditions, ranging from a low rate of around 3% to a relatively high rate of around 7-8%.

The knitted pile fabric is raised, and the subsequent heat treatment can be performed by scouring or dyeing.

Moreover, it is preferable to use a roller-shaped rotating spiral cutter for shearing long piles.

When both the long and short piles of the bicomponent fibers of the interlaced yarn of this invention are dyed by different color dyeing or the like and are completely cut and raised, a different color raised fabric having long and short step-cut piles is formed, giving an appearance similar to natural fur.

In general, pile knitted fabrics using non-scorched filament yarns as pile yarns suffer from "bleed-through" or
There is a phenomenon called "back leakage" in which the pile yarn protrudes from the loop of the ground yarn on the opposite side of the twisted pile surface, but the pile yarn of the present invention does not suffer from such defects because it has been subjected to an interlacing process. do not have.

Furthermore, as the pile yarn passes through each guide from the package, or by sinkers or knitting needles in the knitting machine, obstructions, such as those easily caused by other alignment yarn feeds, can lead to misalignment, filament cracking, snagging, and even yarn breakage. Such things are relatively rare.

In addition, in the above explanation, the yarn length difference after diving contraction is
For example, take a sample length of about 25 c/n (under a load of 0.1 f per denier) of intertwined yarn, and
After marking each of the 2.5crfL, carefully separate the two types of yarn, measure the length between the aforementioned marks for each yarn bundle under a load of 0.1 f per denier, and calculate This was performed five times and the average value was taken.

In addition, the average interlacing pitch of the unentangled portion is the average length of the portion indicated by the length tl in FIG. Furthermore, a load of 1' was applied, and the distance that the pin could move along the yarn axis was measured at 5 points for each intertwined yarn, and this was performed 10 times and the average was taken.

Example 1 Filament ■: Polyester 75D-36F0 with boiling water shrinkage rate of 45.8% Filament ■: Viscose rayon 75D-34F with boiling water shrinkage rate of 3.4%.

These filaments ■ and ■ are fed together under a condition where ■ is 4% longer than I, and then a high-speed fluid (air ) was injected to intermittent entanglement to obtain an interlaced yarn with a non-entangled portion having a length of 54u+.

This interlaced yarn was inter-knitted using a 20 gauge sinker pile knitting machine (manufactured by Fukuhara Seiki; XL-FL2) with a pile length of 2.7 mvt, using polyester temporary twisted yarn 100D-24F' as the ground yarn.

Next, it is passed through a needle cloth raising machine (OR-24; manufactured by Nankai Tekko) at a cloth speed of 14 m/p, drum rotation speed of 1 oorpm, and the number of times of raising is about 6 to 7 times to obtain a relatively uniform cut and raised product. Dyeing was done.

The obtained haired knitted fabric has a long-cut raised part with the coloring property of rayon and a short-cut raised part of polyester in a stepped cut pile shape, and depending on the direction of viewing, it may be a raised product consisting of only one color, or when viewed from the other direction, it may be a raised product consisting of two colors. The result is an elegant fabric with a mixture of colors that stands out.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the appearance of the intertwined yarn of the present invention, and FIG. 2 is a
FIG. 3 is a plan view of a stitch structure diagram in which the interlaced yarn of the present invention is applied to the pile yarn of a sinker pile knit with a ground texture, and FIG. It is a plan view in which three front yarns are drawn in the diagram for better understanding of the stitch configuration diagram shown, and cellulose-based regenerated fiber filament yarns are divided into dotted lines and thermoplastic synthetic fiber filament yarns are divided into solid lines. 1: Regenerated fiber filament yarn, 2: Thermoplastic synthetic fiber filament yarn, 3, 4: Ground yarn for pile knitting, tl: Length of unentangled portion (unentangled portion), t2: Interlaced portion (entangled portion) part) length.

Claims (1)

[Claims] 1 A high-shrinkage filament yarn and a low-shrinkage filament yarn, both of which have a difference in submergence shrinkage rate of 10% or more and are non-drawn filament yarns, are subjected to fluid entanglement treatment to be entangled with each other, and the intertwined portion and non-wired filament yarn are entangled with each other in the length direction. A knitted fabric is knitted using the yarn in which intertwined portions are intermittently formed as pile yarn, and then,
A method for producing a haired knitted fabric, characterized in that the pile yarn is raised and then heat treated.