TWM578302U - Double-combination elastic fiber and elastic multifilament fiber containing the same - Google Patents

Abstract

A double-combined elastic fiber with a linear density of 20-50 denier, an extensibility of 300-600%, and a stretch rate of 400%, the deformation rate is 0-25%. The dual-combination elastic fiber includes an inner core fiber and a sheath outer layer, and the inner core fiber includes a styrene-butadiene block copolymer, a hydrogenated styrene-butadiene block copolymer, or a polystyrene-based polystyrene elastomer. Copolymer material, or containing polystyrene elastomer. The outer sheath of the sheath contains polypropylene or polyethylene. In this way, this work is zero pollution when it is recycled. In addition, this creation has excellent elasticity, dyeability, acid and alkali resistance, quick-drying and no water absorption, antibacterial and deodorant, and soft texture. In addition, the elastic multifilament fiber including the double-combined elastic fiber has all the effects of the double-combined elastic fiber.

Description

Double combined elastic fiber and elastic multifilament fiber containing the double combined elastic fiber

This creation is about a fiber, especially a thermoplastic elastic material to form the inner core fiber, and a thermoplastic material to form the outer layer of the sheath, and the outer layer of the sheath to cover the surface of the inner core fiber to form an elastic double-combined elastic fiber and An elastic multifilament fiber comprising the double-combined elastic fiber.

In recent years, with the popularity of leisure sports, the sales of functional sports fabrics have also increased. At the same time, general consumer users have gradually increased the functional requirements of fabrics. For example, in addition to being lighter, wicking perspiration, antibacterial and deodorant, it is further desirable that elastic fiber fabrics with a close-fitting comfort can reduce the sense of restraint. Therefore, in terms of material technology, there is a need for more movement possibilities between extension and response force, and the best balance can be achieved between functionality and comfort.

As the elastic spinning fiber technology has been improved year by year, it has the advantages of easier manufacturing, processing, durability, fast production efficiency and low cost, and is widely used in many functional sports fabrics.

However, in the conventional technology, the general elastic fiber fabric has the following disadvantages to be overcome.

First of all, an elastic fiber fabric made of diene elastic fibers (elastic yarns) is not suitable for users who have severe allergic symptoms to latex. Synthetic rubber such as neoprene and butyl rubber Instead, avoid allergic reactions. However, the cost of synthetic rubber is usually relatively high, so the competitiveness of the resulting elastic fiber fabric is relatively weak.

In addition, the materials that are more widely used to make elastic fiber fabrics also include polyurethane fibers (Spandex, OP, spandex, elastic yarn). However, there are several problems with polyurethane fibers: one is the difficulty of recycling; the other is that dioxin is generated during combustion, which seriously pollutes the environment; and the third is that the weather resistance and light resistance are poor, which affects the service life.

Moreover, polyetherester elastic fibers (TPEE) are also common materials for elastic fiber fabrics. However, the hardness of the polyetherester elastic fiber is relatively hard, which affects the softness of the elastic fiber fabric. At the same time, the processing conditions are also narrow. Therefore, a more sophisticated processing machine must be used, resulting in a relatively expensive price.

In addition, each elastic fiber is directly drawn with a single-component elastomer, which causes a problem of adhesion between the multiple elastic fibers of the elastic fiber fabric.

In particular, the temperature requirements of fabrics during dyeing and sizing (thermal dimensional stability, wrinkle removal) are very high. For further example, polyurethane fibers (Spandex, OP, spandex), polyester (Polyester), and nylon (Nylon) elastic fibers must withstand high temperatures of 180 to 240 ° C when they are heat-set. In addition, the heat setting temperature of these polyurethane elastic fibers is above 180 ° C, which is higher than the melting point of polypropylene (Polypropylene, PP) fibers at 160 ° C. As a result, polypropylene fibers are coated with such polyurethane elastic fibers to form yarns. The effect of heat setting will be affected due to the different glass transition points (Tg) between different materials. It is well known that if the temperature is too low, the elastic fiber fabric cannot be wrinkled and stabilized in size; however, if the temperature is too high, the polypropylene fiber will become fluid and lose its fiber shape and become unusable.

The existing polypropylene fibers are colored fibers by adding colored masterbatches when manufacturing the fibers. However, this will cause the color diversity to be worse than the traditional method of dyeing and finishing after weaving.

For example, the dyeing temperature of polyester fiber is about 130 ~ 135 ° C, the dyeing temperature of nylon fiber (Nylon66) is about 110 ° C, and the dyeing temperature of OP elastic yarn is about 125 ° C, which are quite high. In particular, although OP elastic yarn (polymer yarn) is dyeable, it is not colored, that is, the dye adheres only to the surface, so the overall dyeing reliability is extremely poor.

The main purpose of this creation is to provide a dual-combination elastic fiber. The inner core fiber is made of a thermoplastic elastic material and the outer sheath is made of a thermoplastic material. Therefore, this creation has excellent elasticity.

Another purpose of this creation is to provide a double-combined elastic fiber with excellent dyeability.

Another purpose of this creation is to provide a dual-combination elastic fiber, which has the advantages of acid and alkali resistance, quick-drying and no water absorption, antibacterial and deodorant, recyclable, and reusable. Make wearing more comfortable.

Another object of this creation is to provide an elastic multifilament fiber containing the dual-combined elastic fiber, which has all the functions of the dual-combined elastic fiber.

In order to achieve the foregoing object, the present invention will provide a dual-combination elastic fiber, which is a dual-combination fiber structure with a core sheath or a core, including: an inner core fiber and an outer sheath. The core fiber is composed of a styrene-butadiene block copolymer (SBS), a hydrogenated styrene-butadiene block copolymer (StBS), or a styrene-butadiene block copolymer (SEBS) or Polystyrene copolymer material of Thermoplastic polyolefin elastomer (TPO), or contains polystyrene elastomer (Thermoplastic polyolefin elastomer, TPS). The outer layer of the sheath is covered on the surface of the core fiber and contains polypropylene (Polypropylene, PP) or polyethylene (PE), and the ratio of a thickness of the outer layer of the sheath to a radius of the inner fiber is 1: 9 to 9: 1.

Among them, the double-combined elastic fiber has a linear density of 20 to 150 denier and an elongation of 300 to 600%.

Among them, after the double-combined elastic fiber is stretched to 400%, the deformation rate is 0-25%.

Preferably, the core fiber has an elongation of 100 to 600%.

Preferably, the outer sheath is dyeable.

Preferably, the polypropylene has a graft dyeing base for dyeing.

Preferably, the ratio of the thickness of the outer layer of the sheath to the radius of the inner core fiber is 9: 1, the double-combined elastic fiber has a linear density of 30 denier and 500% elongation, and the double-combined elastic fiber is stretched to 400% The deformation rate is 1%.

In order to achieve the aforementioned purpose, this creation will provide an elastic multifilament fiber, including a dual combination elastic fiber and a plurality of peripheral fibers. The peripheral fibers collectively surround the dual combination elastic fiber and contact the dual fibers through a plurality of spray nodes. For combined elastic fibers, the elasticity of each peripheral fiber is lower than that of the double combined elastic fibers.

Among them, the spray nodes divide the elastic multifilament fibers into multiple sections. In each section of the elastic multifilament fibers, the length of the double-combined elastic fibers is equal to the distance between the adjacent two spray nodes. The length is greater than the distance between two adjacent spray nodes.

Preferably, the material of each peripheral fiber is polyester.

The effect of this creation is that the inner core fiber is composed of a thermoplastic elastic material, and the outer sheath is made of a thermoplastic material, so that the dual combination elastic fiber and the elastic multifilament fiber containing the dual combination elastic fiber are excellent. elasticity.

Furthermore, the double-combined elastic fiber and the elastic multifilament fiber containing the double-combined elastic fiber can provide excellent dyeability through a dyeable sheath outer layer.

In addition, the double-combined elastic fiber and the elastic multifilament fiber containing the double-combined elastic fiber can provide the advantages of acid and alkali resistance, quick-drying and no water absorption, antibacterial and deodorant, recyclable, and reusable, and the texture is light and suitable for application For light jackets, intimates or diapers for added comfort.

In addition, the polypropylene (PP) constituting the outer layer of the sheath has low-temperature dyeing properties (melting point below 160 ° C, about 70 ~ 110 ° C), which is far lower than that of polyester (PET) at 130 ~ 135 ° C, Nylon66) 's 110 ℃, OP elastic yarn's 125 ℃, so it can reduce the heat energy, shorten the dyeing time, and achieve energy saving effect.

Further, the dual-combined elastic fiber created by this invention can use the outer sheath of the sheath and the core fiber for a one-time fiber drawing production. Not only is the production process simpler, but the raw material price is lower than the commercially available elastic yarn (Spandex), and it can In the production process, almost no pollutants are generated, and it is very easy to recycle and reuse, achieving a recycling economy of recycling and reuse.

1‧‧‧ double combination elastic fiber

10‧‧‧ core fiber

20‧‧‧ outer sheath

2‧‧‧ peripheral fiber

3‧‧‧ Elastic Multifilament Fiber

Section 31‧‧‧

100‧‧‧ Elastane Fabric

P‧‧‧Spray node

S10‧‧‧Stretching steps

S20‧‧‧Surrounding steps

S30‧‧‧Spraying step

S40‧‧‧Release steps

FIG. 1 is a schematic structural diagram of the dual-combination elastic fiber of the present invention.

Fig. 2 is a cross-sectional view of an elastic fiber fabric made by feeding a plurality of double-combined elastic fibers of the present invention into a loom in a multifilament manner.

FIG. 3 is a flowchart of a method for producing the elastic multifilament fiber of the present invention.

FIG. 4 is a schematic diagram of the drawing, wrapping, and sintering steps of the production method of the elastic multifilament fiber of the present invention.

FIG. 5 is a schematic diagram of a loosening step of the method for producing the elastic multifilament fiber of the present invention.

The following is a more detailed description of the implementation of this creation with drawings and component symbols, so that those skilled in the art can implement it after studying this manual.

Please refer to FIG. 1, which is a schematic structural diagram of the dual-combination elastic fiber 1 of the present invention. The present invention provides a dual-combination elastic fiber 1 including an inner core fiber 10 and a sheath outer layer 20. The sheath outer layer 20 is coated on the surface of the inner core fiber 10, and the inner core fiber 10 is composed of a thermoplastic elastic material, and the sheath outer layer 20 is composed of a thermoplastic material. elasticity. Preferably, the outer sheath 20 is made of a dyeable thermoplastic material, so the dual-combined elastic fiber 1 of the present invention may also have dyeability.

Specifically, the double-combined elastic fiber 1 of the present invention is essentially a double-combined fiber structure having a core sheath or a core. In particular, the dual-combination elastic fiber 1 of this creation has a linear density of 20 to 150 deniers and an elongation of 300 to 600%. After the double-combined elastic fiber 1 of this creation is stretched to 400%, the deformation rate is 0-25%.

Further, the inner core fiber 10 contains a styrene-butadiene block copolymer (SBS), a hydrogenated styrene-butadiene block copolymer (Styrene-Ethylene-Butylene-Styrene Block Copolymer, SEBS) ) Or polystyrene copolymer material of Thermoplastic polyolefin elastomer (TPO), or contains polystyrene Thermoplastic polyolefin elastomer (TPS). In addition, the core fiber 10 has a stretchability of 100 to 600%.

It is well known that the above-mentioned thermoplastic polystyrene elastomer (TPS), also known as Styreneic Block Copolymers, or SBCs for short, is currently the world's largest output and most similar to rubber properties. A thermoplastic elastomer. Currently, there are four types of SBCs series, namely: styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), Styrene-ethylene-butene-styrene block copolymer (SEBS) and styrene-ethylene-propylene-styrene block copolymer (SEPS), while SEBS and SEPS are hydrogenated copolymers of SBS and SIS, respectively .

Further, the hard segment of the polyolefin-based elastomer (TPO) is a polyolefin-based material such as polypropylene (PP) or polyethylene (PE), and the softness thereof is a rubber such as ethylene propylene diene rubber (EPDM), which is generally It is formed by using metallocene as a catalyst for polymerization, in which a hard segment part and a soft segment part are directly combined by a covalent chain, and is also called M-POE.

In addition, the outer sheath 20 may include polypropylene (PP) or polyethylene (PE) and have dyeability, and a ratio of a thickness of the outer sheath 20 to a radius of the core fiber 10 may be 1: 9 to 9: 1, used to adjust the best softness, elongation, response rate, tensile strength and other characteristics according to actual needs. The aforementioned polypropylene may preferably have a graft dyeing base to enhance dyeability.

In a preferred embodiment, the ratio of the thickness of the outer sheath layer 20 to the radius of the core fiber 10 is 9: 1. The double-combined elastic fiber 1 has a linear density of 30 denier and 500% elongation. 1 After stretching to 400%, the deformation rate is 1%.

Because the polypropylene (PP) constituting the outer sheath 20 has low temperature dyeing properties (below 160 ° C, about 70 ~ 110 ° C), it is much lower than 180 ° C, which is much lower than polyurethane fibers (Spandex, OP, spandex). Ester (PET) is 130 ~ 135 ℃, Nylon66 is 110 ℃, OP elastic yarn is 125 ℃, so the heat energy is reduced, and the dyeing time can be shortened to achieve energy saving effects.

In addition, in this creation, the outer sheath 20 and the inner core fiber 10 can be used for one-time fiber drawing production. Not only the production process is relatively simple, but the raw material price is also lower than that of commercially available spandex. In the process, almost no pollutants are generated, and it is very easy to recycle and reuse, achieving a recycling economy of recycling and reuse.

In summary, the dual-composite elastic fiber 1 of this creation is characterized by its advantages of acid and alkali resistance, quick-drying and no water absorption, antibacterial and deodorant, recyclable, and reusable, and its soft texture is suitable for light jackets, intimate clothes or Diapers can be more comfortable to wear, especially highly elastic and easy to dye, and the dyeing is also more reliable, and can be mixed with other fibers to knit into functional fabrics with different high functions, such as sports clothing or personal clothing .

In addition, the dual-combined elastic fiber 1 of this creation has the characteristics of lower glass transition point, which can meet the dyeing and setting conditions of polypropylene fibers, and at the same time improve the problems of fabrics in ironing and setting (such as thermal dimensional stability), and then improve When it is interwoven with polyester and other fibers, it is easy to cause the elastic fibers to appear white or to deteriorate the color fastness because the fibers cannot be colored.

In addition, the use of polypropylene with a graft dyeing base as the sheath outer layer 20 can provide deeper dyeing properties than ordinary polypropylene fibers (SDY 110 ° C dyeing), and has the same grade as polyester (PET) Fastness to washing (SDY 110 ° C staining). In particular, the ratio of the thickness of the sheath outer layer 20 to the radius of the core fiber 10 can be adjusted to meet the actual needs of optimal softness, elongation, response rate, tensile strength and other characteristics.

The following is a related description of further manufacturing two kinds of elastic fiber fabrics using the dual-combined elastic fiber 1 created by the present invention.

First, please refer to FIG. 2. FIG. 2 is a cross-sectional view of an elastic fiber fabric 100 made by feeding a plurality of double-combined elastic fibers 1 of the present invention into a loom in a multifilament manner. The double-combined elastic fiber 1 of the preferred embodiment of the present invention is directly fed into a loom (not shown) in a multifilament manner, thereby weaving an elastic fiber fabric 100. Therefore, the manufactured elastic fiber fabric 100 also has all the functions of the dual-combination elastic fiber 1.

Secondly, please refer to FIG. 3 to FIG. 5. FIG. 3 is a flowchart of a method for manufacturing the elastic multifilament fiber 3 of the present invention, and FIG. 4 is a drawing, wrapping, and sintering process of the method for manufacturing the elastic multifilament fiber 3 of the present invention. FIG. 5 is a schematic view of the step S40 of loosening the method for manufacturing the elastic multifilament fiber 3 of the present invention. The present invention provides a method for manufacturing the elastic multifilament fiber 3, including a stretching step S10, a wrapping step S20, a sintering step S30, and a releasing step S40.

Stretching step S10: Stretch a pair of double-combined elastic fibers 1 several times. Among them, it is preferable to stretch three times.

Surrounding step S20: The plurality of peripheral fibers 2 are collectively surrounded on the outer side of the dual-combined elastic fiber 1, and the elasticity of each peripheral fiber 2 is lower than the elasticity of the dual-combined elastic fiber 1. Preferably, the material of each peripheral fiber 2 is polyester, which is almost inelastic.

Sintering step S30: A plurality of ejection nodes P are formed on the plurality of peripheral fibers 2 and the double-combined elastic fibers 1 to form a single elastic multifilament fiber 3. The spray nodes P divide the elastic multifilament fiber 3 into a plurality of sections 31.

Step S40 of loosening: loosen the double-combined elastic fiber 1 so that the elastic multifilament fiber 3 shrinks back to the natural state by the deformation rate of the double-combined elastic fiber 1. Therefore, in each section 31 of the elastic multifilament fiber 3, the length of the double-combined elastic fiber 1 is equal to the distance between the adjacent two spray nodes P, and the length of each peripheral fiber 2 It is larger than the distance between two adjacent spraying nodes P. The prepared elastic multifilament fiber 3 has all the functions of the double-combined elastic fiber 1.

A plurality of the original elastic multifilament fibers 3 can be further fed into a loom (not shown in the figure), so as to be woven into an elastic fiber fabric (not shown in the figure). Therefore, the manufactured elastic fiber fabric also has all the functions of the dual-combination elastic fiber 1.

The above are only for explaining the preferred embodiment of the creation, and are not intended to restrict the creation in any form. Therefore, any modification or change related to the creation in the same spirit of creation , Should still be included in the scope of protection of this creative intention.

Claims (7)

A double-combined elastic fiber is a double-combined fiber structure with a core sheath or a core, and includes: an inner-core fiber, which includes a styrene-butadiene block copolymer (SBS), Hydrogenated styrene-butadiene block copolymer (Styrene-Ethylene-Butylene-Styrene Block Copolymer (SEBS)) or polystyrene elastomer (Thermoplastic polyolefin elastomer (TPO)), or a polystyrene copolymer material A styrenic elastomer (TPS); and a sheath outer layer that covers the surface of the core fiber and contains polypropylene (Polypropylene, PP) or polyethylene (Polyethylene, PE), and the The ratio of a thickness of the outer layer of the sheath to a radius of the core fiber is between 1: 9 and 9: 1; wherein, the double-combined elastic fiber has a linear density of 20 to 150 denier and an elongation of 300 to 600%. Among them, after the double-combined elastic fiber is stretched to 400%, the deformation rate is 0-25%. The dual-combined elastic fiber according to item 1 of the scope of the patent application, wherein the core fiber has an elongation of 100 to 600%. The dual-combination elastic fiber according to item 1 of the scope of the patent application, wherein the outer layer of the sheath has dyeability. The dual-combined elastic fiber according to item 3 of the patent application scope, wherein the polypropylene has a graft dyeing base for dyeing. The dual-combined elastic fiber according to item 1 of the application, wherein the ratio of the thickness of the outer layer of the sheath to the radius of the core fiber is 9: 1, and the dual-combined elastic fiber has a linear density of 30 deniers and 500% elongation. After the double-combined elastic fiber is stretched to 400%, the deformation rate is 1%. An elastic multifilament fiber, comprising a double-combined elastic fiber according to any one of claims 1 to 5 and a plurality of peripheral fibers, and the plurality of peripheral fibers collectively surround the dual-combination elastic fiber and borrow together. A plurality of spray knots contact the double-combined elastic fiber, and the elasticity of each peripheral fiber is lower than the elasticity of the double-combined elastic fiber; wherein the spray-junctions distinguish the elastic multifilament fiber into a plurality of sections. In each section of the elastic multifilament fiber, the length of the double-combined elastic fiber is equal to the distance between two adjacent spray nodes, and the length of each peripheral fiber is greater than the distance between the adjacent two spray nodes. The elastic multifilament fiber according to item 6 of the scope of patent application, wherein the material of each peripheral fiber is polyester.