KR102212470B1 - Sheath-core typed conjugate spinning fiber for contact cold sensation and Fabric and clothes containing the same - Google Patents

Abstract

Provided is a core-sheath type conjugated spinning fiber for a cool contact sensation, which enables a feeling of a cool sensation during contact, and fabric and clothes including the same. According to the present invention, the core-sheath type conjugated spinning fiber for a cool contact sensation comprises: a core part made of a polyamide resin; and a sheath part formed to surround the core part and made of a linear polyolefin resin having a weight average molecular weight of 40,000 to 70,000, wherein a weight ratio of the core part and the sheath part is 55 : 45 to 65 : 35. The core-sheath type conjugated spinning fiber for a cool contact sensation according to the present invention has good reeling properties and excellent cool sensation effects, and exhibits suitable strength and elongation to be used as clothing.

Description

Sheath-core typed conjugate spinning fiber for contact cold sensation and Fabric and clothes containing the same}

The present invention relates to a core-sheath-type composite spinning fiber for a feeling of cooling in contact, and a fabric and clothing having the same.

As the well-being culture, which began in the early 2000s, expands to all ranges such as society and culture, products with functions that maintain comfort while maintaining good wearability and activity are also being developed in the textile fashion industry.

In particular, clothing made of cool functional fibers that can impart cool feeling to the human body when worn due to global warming is attracting attention. In Korea, the CoolBiz campaign has been actively taking place since 2007. According to CoolBiz, the indoor cooling temperature can be increased by 2℃ when office workers wear light clothing such as no-tie and no-jacket, reducing CO2 by 1.6-2.9 million tons per year. It is said that the effect can be obtained, and energy savings equivalent to 300 billion won in amount and two nuclear power plants can be obtained. In this era of global warming and high oil prices, it can be said that cold clothing is not just a functional material, but a trend of the times.

Among the cold-feeling fibers developed to manufacture cold-feeling clothing, so-called cold-feeling fibers that make you feel cold when in contact with the human skin are attracting attention.

Republic of Korea Patent Laid-Open Publication No. 10-2018-0055813 (Patent Document 1) discloses a fiber for contact cooling using a resin having an absorbent functional group as a resin constituting the fiber. In addition, Korean Patent Publication No. 10-1292882 (Patent Document 2) discloses a fiber for contact cooling in which an absorbent inorganic filler is added to the sheath of a fiber having a core/sheath structure. These fibers for sensation of contact cooling are fibers using a quick-drying technology using absorbency, and it is difficult to continuously obtain a sufficient sensation of sensation effect, and when a large amount of an inorganic filler is added, there is a disadvantage in that spinning and yarn spinning are poor.

In addition, Korean Patent Publication No. 10-1524705 (Patent Document 3) discloses a high-strength polyethylene fiber as an examination, and a cover yarn for contact cooling that is covered with polyester or nylon filament yarn. This cover yarn was intended to compensate for the disadvantages by covering the polyethylene fiber with polyester or nylon yarn in order to solve problems such as reduction of inconvenience due to the high cost and high strength of the high strength polyethylene fiber. However, since the cover yarn has a high thermal conductivity and polyethylene, which is a major component of the contact cooling, is used for examination, there is a problem that the contact cooling effect using the thermal conductivity is lowered, and the manufacturing cost is still high.

On the other hand, Korean Patent Publication Nos. 10-2012-0033771 (Patent Document 4) and 10-2016-0022983 (Patent Document 5) include a sheath made of a high-density polyethylene resin, polytrimethylene terephthalate, and polyethylene terephthalate. Or a composite spun fiber having a core portion made of a mixture thereof is disclosed. These composite spun fibers are used for nonwoven fabrics, and the resin used as the core portion has a low thermal conductivity, so there is a limit to its application as a contact cooling fiber.

Patent Document 1: Korean Patent Application Publication No. 10-2018-0055813 Patent Document 2: Korean Patent Publication No. 10-1292882 Patent Document 3: Korean Patent Publication No. 10-1524705 Patent Document 4: Korean Patent Application Publication No. 10-2012-0033771 Patent Document 5: Korean Patent Application Publication No. 10-2016-0022983

An object of the present invention is to improve the problems of the prior art, to provide a core-sheath type contact cooling composite spun fiber capable of exhibiting strength and elongation suitable for clothing, as well as excellent spinning properties and excellent cooling effect.

Another object of the present invention is to provide a sensation of sensation of contact fabric made of a fabric or knitted fabric including the composite spun fiber for sensation of sensation of contact sensation of the core, and a clothing for sensation of sensation of contact made using the same.

In order to achieve the above object, the core sheath-type composite spinning fiber for contact cooling of the present invention,

A core part made of polyamide resin;

It is formed to surround the core portion, and includes a sheath portion made of a linear polyolefin resin having a weight average molecular weight of 40,000 to 70,000, and the weight ratio of the core portion to the sheath portion is 55:45 to 65:35.

In the core-sheath type composite spun fiber for contact cooling of the present invention, nylon such as nylon 6 and nylon 66 may be used as the polyamide resin.

In the composite spun fiber for the core sheath type contact cooling of the present invention, it is preferable to use polyethylene as the linear polyolefin.

In the core sheath type contact cooling composite spinning fiber of the present invention, the fineness of the core sheath type contact cooling composite spinning fiber may be 50 to 70 Denier based on single yarn, and the strength of the core sheath type contact cooling composite spinning fiber is single yarn. Based on 4.0 to 5.0 g/d, elongation may be 30 to 60% based on single yarn.

The above-described core sheath-type composite spun fiber for contact cooling may be partially or entirely used as a fabric or knitted yarn to be manufactured as a contact cooling fabric, and various types of clothing for contact cooling may be manufactured using such a fabric.

The core-sheath-type composite spinning fiber of the present invention of the present invention is composed of a core part made of a polyamide resin and a sheath part made of a straight-chain polyolefin resin having a predetermined molecular weight range, and thus has good spinning properties and excellent cooling effect. In addition, it can exhibit suitable strength and elongation for clothing.

The following drawings attached to the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, which will be described later. It is limited to and should not be interpreted.
1 is a schematic cross-sectional view of the core sheath type cold feeling composite spinning fiber of the present invention.
2 is a photograph of a cross section of the core sheath-type cold feeling composite spun fibers obtained according to Example 1 of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to explain their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention. Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical spirit of the present invention, and thus various alternatives that can be used at the time of application It should be understood that there may be equivalents and variations.

1 is a schematic cross-sectional view of the core sheath type cold feeling composite spinning fiber of the present invention.

Referring to Figure 1, the core-sheath type cold feeling composite spinning fiber 10 of the present invention is composed of a core portion (1) and a sheath portion (2) formed to surround the core portion (1).

The core portion 1 is made of polyamide resin. Nylon 6 and nylon 66 are well known as polyamide resins, and the cost and strength of the composite spun fibers are suitably adjusted for clothing. In addition, since the threading of the composite spun fiber does not occur, it makes the yarn-making property good, and the thermal conductivity is relatively large, and when applied to clothing, it shows a good contact cooling effect.

The sheath portion 2 is made of a linear polyolefin resin having a weight average molecular weight of 40,000 to 70,000, preferably 50,000 to 60,000. In particular, polyethylene is preferred as a polyolefin resin, and a polyolefin resin such as polyethylene exhibits excellent contact cooling effect due to high thermal conductivity. The polyolefin resin is a straight-chain type, and the straight-chain polyolefin resin has an advantage in that the resin has excellent fluidity compared to the branched polyolefin resin in that it has good spinnability and yarn spinning properties during composite spinning. The weight average molecular weight of such a linear polyolefin resin is 40,000 to 70,000. If the weight average molecular weight is less than 40,000, there is a problem in that the spinning property is poor, the appearance of the composite spinning fiber is poor, and the elongation is lowered. In addition, when the weight average molecular weight exceeds 70,000, there is a problem in that the spinning property is poor and the appearance of the composite spinning fiber is poor.

The weight ratio of the core portion 1 and the sheath portion 2 of the core sheath type cold feeling composite spinning fiber 10 is 55:45 to 65:35. If the weight ratio is 55:45 or less, the appearance of the composite spun fibers may be poor and the yarn spinning property may be deteriorated. If the weight ratio exceeds 65:35, the content of the sheath portion is relatively low, thereby reducing the contact cooling effect.

The fineness of the core sheath type contact cooling composite spinning fiber may be 50 to 70 Denier based on the single yarn, the strength of the core sheath type contact cooling composite spinning fiber may be 4.0 to 5.0 g/d based on the single yarn, and the elongation is It may be 30 to 60% on a single yarn basis. It may be appropriate to ply 2 to 6 of these composite spun fibers and apply them to clothes.

The above-described core sheath type composite fiber for contact cooling may be prepared using a core sheath type composite spinning pack as described in Examples below.

The above-described core sheath-type composite spun fiber for contact cooling may be partially or entirely used as a fabric or knitted yarn to be manufactured as a contact cooling fabric, and various types of clothing for contact cooling may be manufactured using such a fabric. In the present invention, clothing should be construed as including not only ordinary clothing such as shirts and pants, but also socks, toshes, hats, etc., which are applied to human body parts requiring a cool feeling of contact.

Hereinafter, examples will be described in detail to illustrate the present invention in detail. However, the embodiments according to the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. Embodiments of the present invention are provided to more completely describe the present invention to those of ordinary skill in the art.

Example One

Nylon resin (Hyosung TNC's POLYAMIDE NYLON-6) is used as the core, and a linear polyethylene resin (Hyosung TNC's LDPE) with a weight average molecular weight of 55,000 is used as the sheath, and the weight ratio of the core part/sheath part is 65/ In 35 configurations, yarn was manufactured by spinning with 36 filaments in 70D for single yarn in a core sheath type composite spinning pack.

Figure 2 is a photograph of a cross-section of the core sheath type cold feeling composite spinning fibers obtained according to Example 1 of the present invention.

The manufactured yarn was knitted using a 32", 32gauge, open circular knitting machine, and the results of fairness and appearance inspection results at the time of yarn production, and the contact cooling sensibility after manufacturing the circular knitted fabric are shown in Table 1.

Example 2

A composite spun fiber was prepared in the same manner as in Example 1, except that the weight ratio of the core part/sheath part was changed to 60/40.

Example 3

A composite spun fiber was prepared in the same manner as in Example 1, except that the weight ratio of the core part/sheath part was changed to 55/45.

Comparative example One

A composite spun fiber was prepared in the same manner as in Example 1, except that the weight ratio of the core part/sheath part was changed to 50/50.

Comparative example 2

A composite spun fiber was prepared in the same manner as in Example 2, except that a linear polyethylene resin having a molecular weight of 80,000 (LDPE of Hyosung TNC) was used as a material for the core part.

Comparative example 3

A composite spun fiber was prepared in the same manner as in Example 2, except that polyethylene having a molecular weight of 30,000 linear polyethylene resin (LDPE of Hyosung TNC) was used as a material for the core part.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Configuration Core resin nylon nylon nylon nylon nylon nylon Weight average molecular weight of sheathbu straight-chain polyethylene resin 55,000 55,000 55,000 55,000 80,000 30,000 Ratio (sec/deep) 35/65 40/60 45/55 50/50 40/60 40/60 Qmax (J/cm2/s) 0.201 0.200 0.201 0.200 0.194 0.192 Sacrifice ◎ ◎ ◎ ○ △ △ Strength (g/d) 4.2 4.3 4.1 4.7 4.8 3.8 Elongation (%) 55 52 50 48 40 65 Appearance (Number of loops/1 yarn) 0 0 0 3 4 6

In Table 1,

Qmax value: If the Qmax value of the core-sheath type cooling composite spun fiber is 0.20 J/sec/cm2 or more, it is determined that the cooling effect is good, and if it is 0.17J/sec/cm2 or less, it is generally evaluated at the level of general synthetic fibers. Measurement conditions are as follows.

ROOM CONDITION: 20℃, 65% R.H. △T=10℃, TESTER: KES-F7 THERMO LABO Ⅱ (KATO TECH, JAPAN)

Yarn property: The number of yarn trimmings when the resins used in Examples and Comparative Examples were melted and compounded for 24 hours was measured, and evaluated according to the following criteria.

◎: The number of filament breaks is 0

○: The number of filament breaks is 1 to 5 times

△: The number of filament breaks is 5 or more

Appearance inspection was evaluated with the number of loops / 1 yarn.

As shown in Table 1, when the weight ratio of the core portion and the sheath portion is smaller than that of the embodiments according to the present invention, or the weight average molecular weight of the straight-chain polyethylene resin constituting the sheath portion is out of the predetermined range determined in the present invention , It can be confirmed that a problem occurs in elongation, appearance, etc.

1: core section 2: sheath section
10: core sheath type contact cooling composite spinning fiber

Claims (7)

A core portion made of only polyamide resin;
It is formed to surround the core portion, and includes a sheath portion made of a linear polyolefin resin having a weight average molecular weight of 40,000 to 70,000,
The core portion and the weight ratio of the sheath portion is 55:45 to 65:35 as a core sheath type contact cooling composite spinning fiber,
The fineness of the core sheath-type contact cooling composite spun fiber is 50 to 70 Denier based on single yarn,
The core sheath-type contact cooling composite spun fiber has a strength of 4.0 to 5.0 g/d on a single yarn basis, and an elongation of 30 to 60% on a single yarn basis. The method of claim 1,
The polyamide resin is a core-sheath type contact cooling composite spinning fiber, characterized in that nylon. The method of claim 1,
The straight-chain polyolefin is a core-sheath type contact cooling composite spinning fiber, characterized in that polyethylene. delete delete A fabric for contact cooling sensation made of a fabric or knitted fabric comprising the composite spun fiber for the core sheath type contact cooling sensation of any one of claims 1 to 3. Clothing for cold contact made of the fabric of claim 6.

Images