JPH08176934A - Victoria lawn and its production - Google Patents

Abstract

PURPOSE: To obtain a victoria lawn, having a touch feeling with stiffness even without applying a resin thereto, having a low wet shrinkage, hardly causing the slippage and useful for agricultural materials by weaving a blended yarn of a polyester fiber with a binder fiber and carrying out the thermal fusing treatment of the resultant woven fabric. CONSTITUTION: This victoria lawn is obtained by carrying out the thermal fusing treatment of a woven fabric prepared by weaving a blended yarn of a polyester fiber with a binder fiber and fusing crossover points of the mutual polyester fibers and weft and warp yarns with the binder component. A conjugated fiber comprising a core component 1 composed of the same polymer as that of the polyester fiber and a sheath component 2 composed of the binder component is preferably used as the binder fiber from the viewpoint of spinnability and spinning quality.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ginseng which can be used as an agricultural material and a method for producing the same.

[0002]

BACKGROUND OF THE INVENTION Agricultural ginseng is used to cover crops and soil in order to prevent frost and cold damage during the cold season, to block high temperatures and strong sunlight in the summer, or to protect against strong winds and pests. It is used for the purpose of supporting the growth of rice, and requires moderate light-shielding properties, breathability and strength, and coarse mesh fabrics are used due to the requirements of appropriate light-shielding properties and breathability, but there is no blindness. Is required.

Conventionally, vinylon ginseng has been widely used as an agricultural ginseng. Vinylon ginseng has excellent light resistance, and because it prevents misalignment with Poval, it has an appropriate waist and is also favored in terms of texture. However, vinylon ginseng has a problem that the product price is high due to the large wet shrinkage due to the raw material. Polyester gauze has been proposed as a solution to this problem, and we obtained satisfactory results in terms of wet shrinkage and product price.
It is inferior in terms of the texture and misalignment of the waist, and improvements in this point have been demanded.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has a soft texture even when a resin such as Povar is not applied, has a small wet shrinkage, It is an object of the present invention to provide an agricultural gauze and a method for producing the same, in which misalignment is less likely to occur.

[0005]

The present invention achieves the above object and has the following configuration. That is, the present invention is a woven fabric composed of a mixed yarn of polyester fibers and binder fibers, and is characterized by a gauze cloth characterized in that the intersections of the polyester fibers and the warp and weft threads are fused by a binder component. Is.

The present invention will be described in detail below. The polyester fiber used in the present invention is a polyester short fiber obtained by melt-spinning a polyester comprising polyethylene terephthalate or a polyester obtained by copolymerizing an ethylene terephthalate unit with a third component to the extent that the characteristics are not impaired, and then crimping after stretching. .

The fineness of the polyester fiber is preferably 1.5 to 3 denier in order to obtain a ginseng having a suitable hardness, and the fiber length may be set so as to be compatible with the spinning method.

The binder fiber used in the present invention is a short fiber having a binder component having a melting point lower than that of the above polyester fiber. As the binder component, any polymer having a melting point lower than that of polyester fiber may be used, and various polymers such as polyester-based polymer, polyamide-based polymer and olefin-based polymer may be used. From this viewpoint, it is more preferable to use a low melting point polyester obtained by copolymerizing one or more kinds of dibasic acids or derivatives thereof and one or more kinds of glycols. In this case, examples of dibasic acids include aromatic dibasic acids such as terephthalic acid, isophthalic acid, phthalic acid, P-oxybenzoic acid, 5-sodium sulfoisophthalic acid and naphthalenedicarboxylic acid, oxalic acid, adipic acid, sebacic acid, Alicyclic dibasic acids such as azelaic acid and dodecanedicarboxylic acid are listed, and examples of glycols include ethylene glycol, diethylene glycol, triethylene glycol, propanediol, butanediol, pentanediol, hexanediol, neobenzyldiol P. -Kyrisylene glycol etc. are mentioned.

A low melting point polyester obtained by copolymerizing an ethylene terephthalate unit of terephthalic acid and ethylene glycol with a cyclic lactone compound such as ε-caprolactone can also be preferably used.

The binder fiber may be a fiber consisting of only the binder component, but as shown in FIG. 1, the same polymer as the polyester fiber is used as the core component 1 and the binder component is used as the sheath component 2 for composite spinning. A composite fiber is preferable in terms of spinnability and spinnability.

The fineness of the binder fiber is preferably the same as that of the above polyester fiber in view of spinnability and the like. When the binder fiber is a core-sheath composite fiber,
The thickness of the core component is preferably the same as that of the polyester fiber. Further, the fiber length of the binder fiber may be set so as to be compatible with the spinning method like the polyester fiber.

The melting point of the binder component of the binder fiber is preferably lower than the melting point of the polyester fiber by 30 ° C. or more, so that the workability of the heat treatment in the final step and the physical properties of the polyester fiber are less affected by 110 to 200.
C. is preferred. The garment gauze of the present invention comprises a blended yarn of the above polyester fiber and binder fiber. The blend ratio of polyester fiber and binder fiber is
It may be determined in consideration of the strength of the target ginseng, texture, misalignment, etc. However, since the amount of the binder component particularly affects the texture and misalignment, the amount of the binder component is 10% of that of the blended yarn. It is preferable to carry out blending so that the content becomes -30% by weight.
If the amount of the binder component is small, misalignment easily occurs, and it becomes difficult to obtain a firm and hard texture.

The method of blending polyester fibers and binder fibers is not particularly limited and may be a conventional method.
The yarn count of the blended yarn may be thicker than the 30th yarn used in vinylon ginseng since it contains a binder component that does not contribute to the tenacity, but the 30th yarn can also obtain the yarn tenacity and fabric tenacity that can be used. Even the same number is enough.

[0014] The ginseng is usually flat-woven and is woven with a density of 20 to 25 pieces / inch in both directions, but the ginseng of the present invention does not need to be changed. The loom to be used may be a commonly used loom.

The ginseng of the present invention is obtained by heat-treating a woven fabric woven from a mixed yarn of polyester fiber and binder fiber at a temperature between the melting point of the binder component and the polyester fiber. The heat treatment apparatus is not particularly limited, but it is preferable to use a circulating hot air tenter. By this heat treatment, each polyester fiber in the blended yarn is fused by the binder component in the blended yarn, and the intersections of the warp and weft yarns are fused, so that the desired hardness and slippage preventive property can be obtained. The present invention has the above configuration.

[0016]

The ginseng of the present invention is obtained by heat-treating a woven fabric made of a mixed yarn of polyester fiber and binder fiber at a temperature between the melting point of the binder component and the polyester fiber. Each polyester fiber in the blended yarn is fused by the binder component in the blended yarn, and the intersections of the warp and weft yarns are fused without adding a resin such as Is obtained.

[0017]

EXAMPLES The present invention will be described in detail below with reference to examples. In the examples, the evaluation of ginseng was performed by the following method.

(1) Unit weight Measured according to JIS L 1096.

(2) Tensile strength and elongation Measured according to JIS L 1096.

(3) Sliding resistance Measured according to JIS L 1096 pin hooking method.

(4) Bending resistance Measured according to JIS L 1096 cantilever method.

(5) Immersion shrinkage ratio Measured according to JIS L 1042B method.

(6) Light-shielding property Measured according to JIS L 1055.

Example 1 Polyethylene terephthalate was spun and stretched by a conventional method to obtain a polyester fiber of 1.5 denier × 51 mm,
On the other hand, a copolymer low melting point polyester (melting point 110 ° C.) of ethylene glycol having a molar ratio of terephthalic acid and isophthalic acid of 60:40 as a binder component is arranged in the sheath part, and polyethylene terephthalate is arranged in the core part. 2 denier x 51 mm binder fiber was obtained by composite spinning and stretching with a sheath ratio of 50:50, and the blending ratio of these was 5
Ordinary 2 as 0:50 (binder component ratio 15%)
Blending was carried out by the inch method to obtain a blend yarn of No. 30 count. Using the resulting blended yarn, a plain weave fabric having a warp density of 23 yarns / inch and a weft yarn density of 22 yarns / inch was woven by a rapier loom, and the resulting raw fabric was circulated at a temperature of 180 by a circulating hot air tenter.
Heat treatment was performed at 40 ° C. for 40 seconds to obtain a ginseng of the present invention.

Comparative Example 1 A plain weave fabric having a warp density of 23 yarns / inch and a weft yarn density of 22 yarns / inch woven from 30-count spun yarn of 1.5 denier × 51 mm vinylon fiber was used for Poval 8.3. % Was added to obtain vinylon ginseng as a comparative example.

Comparative Example 2 1.5 denier made of polyethylene terephthalate ×
A vinylon gauze cloth as a comparative example was prepared by adding 8.3% poval to a plain weave fabric having a warp density of 23 yarns / inch and a weft density of 22 yarns / inch woven using a 30-mm spun yarn made of 51 mm polyester fiber. Got

Table 1 shows the evaluation results of the obtained Example 1 and Comparative Examples 1 and 2.

[0028]

[Table 1]

As is clear from Table 1, in Example 1 according to the present invention, the binder component does not contribute to the strength, so that the tensile strength is slightly low, but it is at a level that does not hinder practical use. Even if it is not applied, the sliding resistance and bending resistance are at the same level, and the dipping shrinkage rate is much smaller than that of vinylon ginseng.

[0030]

EFFECTS OF THE INVENTION According to the present invention, even if a resin such as Povar is not applied, it has a soft texture, small wet shrinkage,
It is possible to provide an agricultural broth that does not cause misalignment.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an example of a binder fiber that can be used in the present invention.

[Explanation of symbols]

 1 core component 2 sheath component

Claims (2)

[Claims] 1. A gauze cloth, which is a woven fabric made of a mixed yarn of polyester fibers and binder fibers, wherein the intersections of the polyester fibers and the warp and weft yarns are fused by a binder component. 2. A method for producing a gauze, which comprises subjecting a woven fabric woven using a mixed yarn of polyester fiber and binder fiber to a heat treatment at a temperature between the melting point of the binder component and the polyester fiber.