JPS5855259B2 - Tokushi Unite Caranal Amioli Mono Oyobi Sono Seizouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing knitted fabrics or fabrics made of special fibers that have a soft touch, excellent texture, moisture absorption, and heat retention properties. be.

Traditionally, when trying to change the performance of knitted fabrics, blending or blending machines were used to do so, but with this method, the denier of the fibers used was limited due to processing constraints, and it was thought that this could be achieved by modifying the fibers. The various effects that can be expected cannot be expected.

The purpose of the present invention is to provide a soft texture that cannot be easily obtained using conventional methods, and an excellent texture.
A knitted fabric or woven fabric that has moisture absorption and heat retention properties, and has the necessary performance as a knitted fabric or woven fabric, such as strength, strength,
The goal is to produce knitted fabrics with excellent elongation, tear strength, washing resistance, shape retention, etc.

Another object of the present invention is to be able to omit the conventional gluing process during knitting or weaving and the various complicated processes involved therein.

That is, as will be described later, by attaching a solvent of one component of the two-component filament around the multifilament yarn and making them adhere to each other, or by fusing them with heat, an effect equivalent to or better than that of gluing can be obtained. It is in.

Alternatively, the object is to provide a method in which a slight amount of gluing is sufficient.

That is, the present invention includes a nozzle hole for discharging at least two single-component filaments, and two holes on the outer periphery of the nozzle hole.
A special multifilament yarn spun in a multi-hole nozzle equipped with nozzle holes for discharging component filaments, the bicomponent filament being one component of the other component and the internal single component filament being dissolved in a solvent. It is a filament that has components with different properties and in which one component is dispersed in large numbers as ultra-fine denier fibers in the other component, and after drawing and heat-treating the special multifilament yarn, it becomes a multifilament yarn. A knitted fabric is made from the spun yarn that is cut and spun after fixing the multifilament yarn in this state or without breaking this state, and then the special multifilament yarn constituting the knitted fabric or the spun yarn obtained therefrom. It has a soft feel and texture, and is made of a special thread that is characterized by dissolving and removing one component of the two-component filament inside with a liquid that is a solvent for the filament and a non-solvent for the other component. hygroscopic,
This is a method for producing knitted fabrics with excellent heat retention.

The special yarn constituting the knitted fabric used in the method of the present invention is a multifilament yarn in which at least two single-component filaments with a single fineness of 0.5 denier or more Spinning two types of polymers with different properties, one type of polymer uses the other type of polymer as a dispersion medium component, and one component is removed from the two-component filament of the dispersed components, which becomes a large number of ultra-fine denier fibers, using a solvent. 0,5 obtained by
It is a special type of thread that is surrounded by a bundle of ultrafine denier filaments of less than denier or a porous array in which numerous holes are formed.

The manufacturing method for such fibers includes, for example, a spinning nozzle hole that discharges at least two single component (unmodified) filaments, and at least two spinneret holes around the spinning nozzle hole.
The fiber is spun by a multi-hole nozzle as shown in the attached FIG. 1, in which spinning nozzle holes for discharging (modified) filaments made of polymers are disposed, to produce a single multi-hole as shown in FIG. 2. One method is to use filament yarn.

This multifilament yarn has an inner filament (second
The component (indicated by 11 in the figure) consists of a single component,
Filaments around it (21 in Figure 2)
As shown in FIG. 3, in the filament cross-sectional structure, at least one type of polymer is a dispersion component and another type of polymer is a dispersion medium component.

FIG. 3A shows an example in which the number of dispersion components is small, FIG. 3B shows an example in which the dispersion component consists of a relatively large number of dispersion components, and FIG. 3C shows an example in which the dispersion component consists of an extremely large number of dispersion components.

The dispersion component and the dispersion medium component are composed of polymers having different solubility in the solvent.

The component to be removed in the final product must have a different solubility in the solvent from the polymer of the internal filaments constituting the multifilament and one component of the two-component filament.

The multifilament yarn spun from this multi-hole nozzle is drawn in its original shape using a drawing bath such as dry heat, wet heat, or hot water, or by a drawing method using pins or plates, and then heat-set. It becomes a normal filament.

Alternatively, one can make use of the thermal adhesiveness and solvent adhesiveness of the two-component filament around the multifilament yarn.
The book is bonded into a filament shape and then cut into a desired length to make a stable.

This staple may then be spun into yarn.

The multifilament yarn or spun yarn obtained here is heated in a conventional manner, twisted together, or knitted or woven as a textured yarn, and then the multifilament yarn is wrapped around the multifilament before or after finishing. The bicomponent filament is treated with 1 #j of solvent and the other components and the internal monocomponent filament with a non-solvent to dissolve and remove one component of the bicomponent filament.

After most of the dissolved components are removed, the solvent is washed away, dried, and raised by brushing, puffing, etc., if necessary.

The surface of the extracted knitted fabric or woven fabric is composed of bundles of ultra-fine denier fibers or fibers in a porous array, so it is extremely soft to the touch and has excellent texture as well as texture.

Furthermore, despite the excellent properties of modified fibers, such as high hygroscopicity, excellent heat retention, and a unique glossy appearance, they lack the strength and washing resistance required for knitted or woven fabrics. It has characteristics such as hardness, resistance to rubbing, and shape retention.

As for the polymer constituting the multifilament yarn of the present invention, the single-component polymer constituting the internal filament includes, for example, polyethylene terephthalate,
Selected from polyesters such as copolymerized polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon-6, nylon-66, nylon-6101 and nylon-11, polyolefins such as polyethylene, polypropylene, and polybutylene, polyvinyl chloride, polyurethane, polycarbonate, etc. Examples of polymers include

Further, as the polymer constituting the surrounding two-component filament, a combination is used in which the polymer serving as the dispersion component and the polymer serving as the dispersion medium component have different solubility in the solvent.

Specific soluble polymers include polymers that can be dissolved in liquids in which the above-mentioned specific polymers are insoluble, such as polyolefins such as polyethylene, polypropylene, and polybutylene, copolymerized polyolefins, and polystyrene that are soluble in solvents. Alternatively, copolymerized polystyrene, ethylene vinyl acetate copolymer, polyester, or copolymerized polyester may be used.

Further, as the insoluble polymer constituting the two-component filament, the polymers specifically mentioned as the single polymer constituting the internal filament mentioned above are used.

During spinning, an insoluble polymer is selected from among these specific polymers as one component of the single component filament constituting the inner filament and one component of the two component filament on the outer periphery, and one of the other components of the two component filament is selected. A soluble polymer is selected and spun by melt spinning, dry spinning, or wet spinning.

Melt spinning is preferred. In addition, in two-component filaments, which polymer is the dispersion component and which polymer is the dispersion medium component depends on the composition ratio of these polymers, the difference in cohesive force, the difference in viscosity, or the structure of the spinneret or spinneret. Determined by

Next, aspects of the present invention will be explained with examples.

In the examples, parts and percentages refer to weight.

Example 1 A special multifilament spinning nozzle with a nozzle arrangement as shown in FIG. 1 was used as a spinning nozzle constituting one multifilament yarn, and a polyethylene terephthalate component was fed from internal nozzle hole 1 to the surrounding nozzle. From hole 2, a bicomponent fiber consisting of 50 parts of polyethylene and 50 parts of polyethylene terephthalate is spun so that the polyethylene terephthalate is dispersed as an ultrafine denier fiber component using polyethylene as a dispersion medium.

That is, the polyethylene terephthalate component is melted separately by two extruders: an extruder that melts and extrudes the polyethylene component, and an extruder that melts and extrudes the polyethylene terephthalate component. The multifilament yarn obtained by forming a two-component melt mixed flow with the polyethylene component and supplying it to the nozzle hole 2 and melt-spinning has the form shown in FIG. is surrounded by a bicomponent filament 21 of polyethylene terephthalate and polyethylene.

If we observe this two-component filament, we can see that the third
As shown in Figure B, a cross-sectional structure was formed in which polyethylene terephthalate was the dispersion component and polyethylene was the dispersion medium component.

The multifilament yarn obtained by drawing this multifilament yarn to 300% in two stages of drawing in a hot water bath and a hot water bath at 98°C is further heated, twisted, fixed through a heating furnace at 130°C, and then woven. The woven fabric obtained by dissolving and removing the polyethylene component in hot toluene, treating it with hot water to remove the solvent, and dyeing the fabric consists of a bundle of ultrafine filaments of about 0.01 denier made of polyethylene terephthalate on the surface. The inside is made of approximately 2 denier polyethylene terephthalate filament, and this woven fabric has a soft feel and excellent moisture absorption, so it can be used as underwear compared to conventional polyester filament woven fabric. I was able to get something that didn't have that stuffy feeling.

Example 2 In one extruder, 24 filaments of nylon-6 were melt-spun from the internal nozzle hole, and in the other extruder, 50 parts of high viscosity polymethyl ref and 50 parts of low viscosity nylon-6 were mixed in a Cheno. The filament is melted and spun as a two-component filament from the nozzle holes around the multi-hole nozzle, and has a cross-sectional structure of polystyrene as the dispersion component and nylon-6 as the dispersion medium component as shown in FIG. 3C.

This multifilament yarn was subjected to dry heat stretching at 170°C for 26
The multifilament yarn obtained by drawing to 0% is pretreated and woven by a conventional method, and then the polystyrene component is dissolved and removed in hot toluene.The surface filament consists of porous array filament, It had a unique luster never seen before, was light, and had a silk-like feel that could not be obtained with ordinary filaments.

[Brief explanation of drawings]

Figure 1 shows an example of nozzle arrangement for spinning the special multifilament of the present invention, Figure 2 shows the multifilament yarn spun from the multi-hole nozzle in Figure 1, and Figure 3 shows the inside of the multifilament yarn in Figure 2. 21 is an enlarged view of FIG.

Claims (1)

[Claims] 1 A special multifilament yarn spun in a multi-hole nozzle having a nozzle hole for discharging at least two single-component filaments and a nozzle hole for discharging a two-component filament arranged around the nozzle hole,
A component-based filament is a component in which one component has a different solubility in a solvent from other components and the internal single-component filament, and one component is in the form of a large number of ultra-fine denier fibers dispersed in the other components. It is a filament that has a special multifilament yarn, which is knitted from a multifilament yarn state after drawing and heat treatment, or from a spun yarn that is cut and spun after fixing the multifilament yarn so that it does not collapse. A woven fabric is produced, and then one of the two-component filaments in the special multifilament yarn constituting the knitted fabric or the spun yarn obtained therefrom.
It is made of a special thread that dissolves and removes ingredients using a liquid that is both a solvent for the ingredient and a non-solvent for other ingredients.It has a soft feel and texture, and has excellent moisture absorption and heat retention properties. Manufacturing method for knitted fabrics.