JPH10187045A - Base cloth for display label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base cloth that has surface smoothness, flexible feeling and excellent printability required as the base cloth for display label and does not cause a selvage fraying when it is cut in a tape shape. SOLUTION: Specified multi-filament yarn with <=150 deniers in total denier is constituted by using single yarn of core sheath type composite yarn whose a softening point of the sheath component is reduced by 20 deg.C lower than that of the core component to be used for all of the weft and/or the warp, the sum of textile cover factors in the weft direction and the warp direction is made to >=1200, thermal setting is performed under pressure at a temperature of more than the softening point of the said sheath component and of less than the melting point of the core components to form textile in a flat state and at least a peripheral part is formed by a cut edge using machine force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quality display label attached to clothing, bedding, miscellaneous goods, etc., a display label used for management of POS, and the like, and is used in various applications after required printing. The present invention relates to a base fabric used for various display labels and the like (hereinafter, these are collectively simply referred to as labels).

[0002]

2. Description of the Related Art Conventionally, as a label, a coating material in which a nylon resin is dissolved in a methanol solution of calcium chloride is applied to a base cloth of 100% nylon, and the label is immersed in water to remove the solvent and solidify. After forming a porous layer of a nylon resin, the substrate is cut into a predetermined width and size, and printed on the base fabric. The purpose of applying the above-mentioned nylon wet paint is to improve the application of the ink and to eliminate fraying at the time of cutting.

As the type of the base fabric, plain weave, twill weave, satin weave, and the like are used. The fabric is further improved in Japanese Patent Publication No. 62-362.
No. 32 discloses a fabric using cotton for the warp and nylon for the weft, respectively.

[0004]

However, when a nylon-based fabric is coated with a paint using a polar solvent such as water or methanol, the swelling causes poor dimensional stability. In this case, defective products are likely to appear, and the fabric is too soft to print at high speed.
Furthermore, when cutting with a rotary heat cutter, the ear shrinks due to heat shrinkage, and there is a problem that productivity and quality are reduced.

[0005] On the other hand, in the case of a polyester base cloth, there is no such problem as described above, but since the adhesiveness with the nylon paint is essentially not good, it is necessary to add a separate step of applying a polyester paint. It leaves the task of taking time.

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems, and it is required that the surface of the base cloth required for such a base cloth has high smoothness, and that an ear formed when the base cloth is cut into a tape body. No fraying (cut edge), relatively soft feel, good printability. It is an object of the present invention to provide a new fabric that can substantially satisfy the above requirements.

[0007]

In order to achieve the above object, the present invention has the following arrangement. That is, JISK7
A specific multifilament yarn having a total denier of 150 denier or less is constituted by a single yarn of the core-sheath composite yarn in which the softening point of the sheath component measured by the thermomechanical analysis method of 196 is lower than the softening point of the core component by 20 ° C. or more. This is used for all of the warp and / or weft, the sum of the woven fabric cover factors in the warp and weft directions is set to 1200 or more, and the heat setting under pressure is performed at a temperature not lower than the softening point of the sheath component and not more than the melting point of the core component. By doing so, the fabric is formed in a flat state, and at least a part of the periphery is formed by a cut edge utilizing mechanical force.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. In the label fabric of the present invention, the total denier is 1
The specific multifilament yarn of 50 denier or less,
Although it is preferably used for the entire base fabric, it may be partially used, such as being used for either the warp or the weft of the woven fabric. In any case, in the present invention, the sheath component of the core-sheath type composite yarn (single yarn) is melt-deformed by heat setting under pressure using calendering or the like, and the gap of the woven structure, that is, the intersection of the warp and the weft, is obtained. The gaps formed in the corners are filled to smooth the surface.

The core component of the core-sheath type composite yarn used in the present invention may be a conventional fiber-forming polymer such as an ester polymer or an amide polymer, and a low softening point used for the sheath component. The polymer is preferably of the same type as the core component, but any material may be used as long as it has a softening point difference of 20 ° C. or more from the core component. Even if the core component and the sheath component are made of different materials, any material can be used as long as it satisfies the above-described requirements for the display label base fabric.

A preferred specific example of the core and sheath components is a differential thermal analysis in which the core component is made of polyester and the sheath component is heated at a rate of 10 ° C./min in a nitrogen atmosphere such as isophthalic acid copolymerized polyester. And those made of a substantially amorphous polyester which does not produce a melting point peak by the method.

A typical example of such a copolyester contains terephthalic acid and ethylene glycol as main components,
As the copolymerization component, one or two or more known dicarboxylic acid components such as oxalic acid, malonic acid, succinic acid, adipic acid, azelaic acid, sebacic acid, phthalic acid, isophthalic acid, naphthalenedicarboxylic acid, and diphenyl ether dicarboxylic acid are used as the acid component. Known species such as 1.4-butanediol, neopentyl glycol, propylene glycol, trimethylene glycol, tetramethylene glycol, hexamethylene glycol, diethylene glycol, polyalkylene glycol, 1.4-cyclohexanedimethanol, etc. One or more diol components are used, but diethylene glycol, polyethylene glycol, etc. may be added as other copolymer components.

The copolymerized polyester used in the present invention is:
The copolymer component as described above, so as to have a desired softening point,
It may be appropriately selected and used within a physical property range that does not impair the spinning and processing operability.However, those using terephthalic acid and ethylene glycol as main components and using isophthalic acid as a copolymer component are industrially inexpensive. It is preferable because it can be obtained stably and has good polymer properties. In such an isophthalic acid copolymerized polyester, the isophthalic acid component is preferably 20 to 40 mol%, and the core / sheath ratio of the core-sheath type composite yarn is 5/1 to 1/5, particularly, in volume ratio. It is preferably about 3/1 to 1/2. The cross-sectional shape of the composite yarn may be any of a circle, an ellipse, a polygon, and a star, and the core and the sheath may be arranged concentrically or eccentrically. It is good to use what has a circular cross section and a core and a sheath arranged concentrically.

However, in the present invention, since the surface is smoothed by heat setting under high pressure, monofilament yarn is not suitable. Even if it is a multifilament yarn, the total denier is 150 denier or less, preferably 50 denier.
It must be less than denier. Total denier is 150
If the denier is exceeded, it becomes difficult to weave a base fabric having a smooth surface as the object of the present invention. Examples of the multifilament yarn interwoven with the core-sheath composite yarn include a polyamide filament, a polyester filament multifilament yarn, and a processed yarn thereof, which are usually used as a fabric.

The interlining of the present invention is woven using the above-described yarn. To increase the surface smoothness, the sum of the woven fabric cover factors in the warp direction and the weft direction is further increased to 1200. It is necessary that the density be higher than the above. When the sum of the woven fabric cover factor is less than 1200, in a heat set under pressure using calendering or the like,
The spacing between the woven tissues cannot be sufficiently reduced. On the other hand, in normal weaving, the sum of the fabric cover factors is 3
It is considerably difficult to increase the number to 500 or more in terms of weaving.

In the present invention, the fabric cover factor in the warp direction is represented by the warp density (book / inch) × the square root of the warp denier, and the fabric cover factor in the weft direction is the weft density (book / inch). ) × square root of weft denier. The sum of the textile cover factors according to the present invention is the sum of the two.

The base fabric of the present invention is obtained by weaving a wide or parallel-width woven fabric using the above-described yarn and woven fabric, scouring the woven fabric, setting the woven fabric, and then subjecting the woven fabric to heat treatment under pressure. To make a flat base cloth.

The heat treatment in the present invention may be performed at a temperature not higher than the melting point of the core component and not lower than the softening point of the sheath component of the core-sheath type composite yarn. It is preferable to perform the treatment in a two-stage method in which heat treatment under pressure is performed at a predetermined higher temperature.

The base fabric is further cut into a predetermined size. Usually, after the base fabric after pressurizing and heating is wound in an expanded shape, the roll is unwound and cut to a predetermined width by a cutting mechanism. Cut to form a tape body. The cutting means provided in the cutting mechanism needs to be a cutting mechanism utilizing mechanical force, for example, a rotary blade made of ceramic. The cutting method using the fusing blade cannot achieve the object of the present invention for completely preventing ear fray. In the present invention, it is preferable that the entire periphery of the base cloth is formed by a cut edge utilizing mechanical force, but at least a side edge that contacts a guide member attached to a printing mechanism or the like must be formed by the cut edge. There is.
Hereinafter, the present invention will be described more specifically with reference to examples.

[0019]

EXAMPLES The following four types of raw yarns were prepared. Filament A-isophthalic acid (IPA) is 25 mol% of the acid component
And a copolymer of polyethylene terephthalate having a substantially amorphous softening point of 150 ° C. which does not generate a melting point peak by differential thermal analysis (DSC method) in which heating is performed at a rate of 10 ° C./min in a nitrogen atmosphere. Terephthalic acid 10
0% polyethylene terephthalate (melting point 255)
(Softening point 240 ° C.) as a core component was spun at a core-to-sheath ratio (volume ratio) of 1: 1 to obtain a 50d / 24f multifilament yarn. This was designated as raw yarn A. 50 d / 2 in which the core component and the sheath component of the original yarn B-the original yarn A are reversed.
A 4f multifilament yarn was manufactured and used as a raw yarn B. Yarn C—A 50d / 24f multifilament yarn made of regular polyester having an acid component of 100% terephthalic acid was used as Yarn C. Yarn D-Similarly, a 50d / 12f multifilament yarn made of a regular polyester having an acid component of 100% terephthalic acid was used as Yarn D.

A raw cloth A using the raw yarn A as a warp and a raw yarn D as a weft; a raw cloth B using the raw yarn B as a warp and the raw yarn D as a weft;
Raw cloth C having the original yarn C as the warp and the original yarn D as the weft, and weaving the above three types of plain weaves (woven density warp 150 yarns / inch, weft 100 yarns / inch). I went through the process. The post-processing step is a normal scouring step, at a temperature of 150
℃ setting process, using a calendar, working surface temperature 16
This is a pressurization heating process at 0 ° C. and a pressure of 50 kg / cm ² .

The three types of flat fabrics obtained by the above process were cut into a tape having a width of 2 cm, supplied to a display label printer, and tested for performance. Table 1 shows the results.

[0022]

[Table 1]

As can be seen from Table 1, the fabric A, which is an example of the present invention, was superior in all aspects to the fabrics B, C, which were comparative examples.

[0024]

The display label fabric according to the present invention has the following effects. That is, since the core-sheath type composite yarn is used for the fibrous yarn and the intersection of the warp yarns is fixed by melting the sheath component, ear fraying during use can be completely prevented. Since the softening point component is used as the sheath component and the weaving density is increased as a whole, the smoothness of the surface of the base fabric can be easily increased by simple pressurization and heat treatment such as calendering. . Further, since the low softening point component is arranged on the surface side of the yarn, the feeling is good, and both the hardness and printability which can sufficiently follow high-speed printing are provided. As described above, the requirements described at the beginning necessary for the base cloth are sufficiently satisfied.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroshi Shibaoka 1849-94 Matsubara-cho, Hikone City, Shiga Prefecture

Claims (1)

[Claims] A single denier of a core-sheath composite yarn in which the softening point of a sheath component measured by a thermomechanical analysis method of JIS K7196 is lower than the softening point of a core component by 20 ° C. or more, the total denier is 1
A specific multifilament yarn having a denier of 50 denier or less is used, and this is used for all of the warp and / or weft yarns. The sum of the fabric cover factors in the warp direction and the weft direction is 1200 or more, and the core component is not less than the softening point of the sheath component. The label is characterized by forming a woven fabric into a flat state by heat setting under pressure at a temperature not higher than the melting point of the label, and further forming at least a part of the periphery with a cut edge utilizing mechanical force. cloth.