JPS61179382A - Flocked nonwoven sheet material - Google Patents

Abstract

PURPOSE:The titled sheet material, obtained by flocking one side of a heat- formable nonwoven fabric consisting of heat-shrinkable fibers having a specific shrinkage alone or mixed fibers containing the same, and shrinking the area to a given amount or more, and formable without causing cracks or uneven flocking. CONSTITUTION:A flocked nonwoven sheet material obtained by electrostatically flocking one side of a heat-formable nonwoven fabric consisting of heat- shrinkable fibers having >=30% heat shrinkage, e.g. polyolefin based conjugate fibers or polyester fibers, alone or mixed fibers prepared by mixing >=30wt% above-mentioned fibers with other fibers, heating the flocked nonwoven fibers to shrink the area thereof >=1/2 simultaneously with the drying, and useful as a forming material for excellent inner bottoms such as precious stone or cosmetics, capable of deep draw forming, and having a feeling of high class. The shrinkage of area to >=1/2 with the fibers having the above-mentioned shrinkage provides the aimed formed article rich in a feeling of high class without cracking the corner parts thereof or roughening the flocking density in deep draw forming.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a nonwoven sheet having a uniform molding method and having a flocked surface. More specifically, when molded, the pace nonwoven fabric will not tear at the corners of the finished product, and the density of the flocking will not become coarse.For the inner bottom of decorative boxes and protective boxes for jewelry precision equipment, stationery, etc. The present invention also relates to a sheet material with particularly excellent fabrication properties for use in frequently worn items such as hats, and for automobile interior materials.

[Conventional technology]

Conventionally, the materials used for the inner base of cosmetic boxes such as lighters, yoke clocks, fountain pens, etc. have been made by pasting fabrics such as velpet or velveteen on the surface of paper, or made from thermoplastic synthetic materials. A resin sheet with flocked hair on the surface is used.

The former is used to create a decorative box by one hand-gluing process, while the latter is processed into a decorative box using a heating process.

Further, personal items such as hats are provided by molding felt or the like.

[The problem that the invention seeks to focus on]

It is widely used to create cosmetic boxes using fabrics such as velpet or velveteen pasted onto the surface of zeel paper.As this is done by hand, manufacturing efficiency is low and the quality is inconsistent, giving it a luxurious feel. The disadvantage is that there is no On the other hand, when using a round fiber-flocked sheet on the surface of a thermoplastic carbonable synthetic resin sheet, it is continuously formed using a heat molding method, so the manufacturing efficiency is higher than that of the above-mentioned I-paper-based sheet, and the quality is high. There are no scratches.

However, because it is three-dimensional molding, the corners of the product are stretched during molding, and the flocking density in those areas becomes coarse, resulting in a loss of luxury, and in some cases, cracks occur in those areas, resulting in defective products. There are problems such as. Furthermore, in recent years, the demand for decorative boxes has been expanding in the field of precision instruments, etc., and materials for the inner sole that can be deep-drawn with more complex shapes are required. It is difficult to meet this requirement with conventional materials.

In view of the paper problems, the present inventors have succeeded in developing a deep-drawn and luxurious inner sole material for decorative boxes.

[Means for solving problems]

The present invention is characterized in that short fibers are flocked on one side of an aged columnar nonwoven fabric made of heat-shrinkable fibers alone or mixed with heat-shrinkable fibers with a shrinkage rate of 30 inches or more, and then the area is shrunk to 5 inches or more. A flocked nonwoven sheet material characterized by the following is provided as a material for the inner sole of a cosmetic box.

Since the material for the insole of the present invention is made of non-woven fabric as a pace, not only the flocked surface but also the pace itself is made of fiber aggregates, compared to conventional flocked sheets made of gill paper or synthetic resin Shinito. Protection of products that are real and delivered! ! In addition, in the present invention, the nonwoven fabric has excellent functionality. t) Using such a pace, a sheet is formed after flocking and then subjected to shrinkage treatment, and this is used to provide molded products, especially deep-drawn products. If this is done, it is possible to obtain a deep-drawn product with an extremely uniform and tight flocked surface.In other words, a flocked sheet made of a nonwoven fabric with the above structure as a paste, which has no corners created by molding, especially deep drawing, can be obtained. By applying sufficient contraction before molding to alleviate the elongation of the molded product, even if it is a deep-drawn product, the degree of shrinkage will reduce the elongation in all the uneven parts of the molded product. The entire uneven surface of the molded product is finished with uniform and tightly flocked hair.

By the way, during molding, the degree of elongation of the corners forming the unevenness is said to be about three times at most. Therefore, when making a molded product using flocked sheet material, there is a difference in the uniformity and tightness of the flocking density between the flat part and corner part of the molded product that would normally be obtained, resulting in a finish with a poor surface appearance. The present invention prevents differences in the surface flocking density of the above-mentioned finished product by using a flocked sheet material whose area has been contracted in advance. Considering that the degree of elongation of the corners of the fiber can be increased by a maximum of three times the degree of root strength, the flocked sheet material used for molding must be shrunk to S or more before molding. However, the degree of expansion is 3 times the maximum value, and it is generally considered that the degree of expansion is 2 times or more. Therefore, the area shrinkage rate of the flocked sheet material required to alleviate the degree of elongation in this range is:
In the present invention, by limiting the thickness to S or higher, we have succeeded in imparting to the flocked sheet material the function of alleviating the degree of elongation during molding as described above.

In order to achieve the objectives of the present invention, the shrinkage rate of the heat-shrinkable fibers used to form the nonwoven paste fabric and the minimum amount thereof used are important factors. In other words, it is ultimately possible to undergo a shrinkage treatment more than S, and is an important condition for achieving sufficient moldability.

First, the necessary shrinkage rate of the heat-shrinkable fiber must be 30 inches or more. If a material with a shrinkage rate lower than this is used, the flocked nonwoven sheet material targeted by the present invention cannot be obtained. Further, the nonwoven fabric used as the pace of the present invention may be formed only of the above-mentioned heat-shrinkable fibers, but it is not necessarily necessary to use 100% of the heat-shrinkable fibers, and a mixture of other types of fibers such as non-flexible fibers may be used. do not have. In the case of keratin fibers, unless the heat-shrinkable fiber is 30% by weight or more, it will not be possible to shrink more than S during the shrinkage treatment after flocking, and sufficient moldability will not be exhibited.

The heat-shrinkable fibers used in the present invention may have a shrinkage rate of 30% or more and are moldable, but generally polyolefin conjugate fibers, polyester fibers, polyvinyl chloride fibers, agri-1 resin fibers, etc. based fibers, polyamide fibers, polyvinylidene chloride fibers, polyfural fibers,
etc. are used.

〔Example〕

Alkali-thickened ethylene-vinyl acetate was applied on one side of a nonwoven fabric consisting of 35 parts by weight of polyvinyl chloride fibers with a fiber length of 5 ivx and a thickness of 5 denier and 65 parts by weight of acrylic fibers with a fiber length of 5 iris and a thickness of 3 denier. Immediately after applying the copolymer paint, rayon fibers of /, j denier, 0.6 company were electrostatically flocked, and then this was fed into a heated drying zone at 130°C, and at the same time, the area was /
The fibers were shrunk to obtain a flocked nonwoven sheet material.

The flocked nonwoven sheet material obtained above was heated at a temperature of /6.
After heating for about 3 seconds in a heating furnace kept at 0℃,
When molded using a metal press kept at room temperature with OITX, there were no cracks or coarse flocking density at the corners, and the condition was the same as the flat part. The entire product had a good surface appearance and feel, and since the sheet material itself was soft, it cushioned the impact and had an excellent product protection function.

〔Effect of the invention〕

The flocked nonwoven sheet material of the present invention is a sheet material for molding that does not cause cracks in the corners of the molded product or coarse flocking density when subjected to deep drawing. Therefore, it is excellent as a molding material for the inner sole of cosmetic boxes for jewelry, stationery, cosmetics, etc.

Claims (1)

[Claims] After flocking short fibers on one side of a thermoformable nonwoven fabric made of heat-shrinkable fibers with a shrinkage rate of 30% or more or a mixture of heat-shrinkable fibers of 30% or more by weight, the area of the fibers is shrunk by 1/2 or more. A flocked nonwoven sheet material characterized by: