Process for manufacture of women's elastic free size winter shirts

Abstract

A process for manufacturing women's elastic winter shirts having an omasum inner-wall-like textile structure to render desired elasticity to a shirt. The process of this invention to make the raw material to have the omasum-like textile structure consists of including but not limited to weaving, hand tying-fabrics, heating, drying, cutting and sewing. The material suitable for the process of this invention is composed of wool and polyester.

Description

[0001] The present invention relates to a process for manufacturing women's elastic winter shirts having excellent resilient elasticity, original shape retainability and shape stability maintaining the omasum inner wall-like textile structure.

BACKGROUND OF THE INVENTION

[0002] 1. Field of Invention

[0003] The present invention relates to a process for the manufacture of lighter, smaller and more sensual elastic women's free size winter shirts. The omasum-like structure made by the procedure of this invention facilitates excellent resilient elasticity, origina shape retainability and shape stability to the textile and make it possible to produce women's shirts which have intended characteristics.

[0004] 2. Description of the Prior Art

[0005] Since they have high performance, synthetic fibers such as nylon and polyester fibers have been widely used for clothing and in industrial areas. Fibrous sheets composed of nylons and polyesters are frequently used as three-dimensional products such as interlining cloths for clothes, brassieres, and pads for breasts and shoulders. Recently, they have been applied to a shape stabilizer of the shirts made of blended yarns containing polyester and cotton.

[0006] Conventional polyester fiber itself is poor in resiliency. To enhance reinsiliency, the fiber should be conjugated with highly resilient animal hair such as horse hair or even human hair for an application to interlining cloths. Sophisticated sewing technique is required to make clothing from the conjugated fibers.

[0007] U.S. Pat. No. 6,248,418 to Taguchi, et al. teaches the methods to manufacture materials having good resiliency, dimensional stability and three dimensional shape retainability from polyester itself by high speed molten polymer taking-up method followed by heat treatments. Taguchi, et al. teach to add materials such as wool to the polyester fiber by variant processing methods.

[0008] Taguchi, et al. teach to make shirts by weaving or knitting yarns made by spinning only staple fiber or yarns made by mix-spinning of the staple fiber and other fibers, sewing it to form a shirt, and heat treating it at a temperature not lower than 120° C. Taguchi, et al. teach an example that a shirt made by the procedure has three dimensional shape retainability and suited to the shape of the body. None is suggested or illustrated about the process of manufacturing flexible shirts of free size, retaining the omasum-like structure.

SUMMARY OF THE INVENTION

[0009] It is the object of this invention to provide a new method for manufacture of women's shirts which have an omasum inner wall-like structure to give desired resilient elasticity and original shape retainability enough to make a free size, one size fitting all, shirts.

[0010] FIG. 1 is a block flow diagram representing the process of this invention. The tying-fabrics step in FIG. 1 is to form the omasum inner-wall-like textile structure. Then the textile is exposed to including but not limited to heat and steam followed by cooling step, cutting step, and sewing step to make a shirt. The omasum structure returns to its original shape and original size of baby suit even after woman of normal size wears 100 times. The shirt was made as a free size, one size fitting all.

[0011] The shirts of this invention are much lighter than average women's winter shirts. Thermal insulation is adequate. Packing size is much smaller than a comparable women's winter wear.

[0012] The materials for these shirts are composed of wool and polyester which are fabricated by hand followed by heating and moisture treatments to make an omasum-like structure.

[0013] The shirts of this invention emphasize the line of women's breast and decorate the bodyline with embossing, which is possible due to the excellent resilient elasticity and shape retainability rendered to the material by fabricating the material to have the omasum-like structure as illustrated in FIG. 2 and FIG. 3.

[0014] The weight of a shirt of this invention is less than 200 g/shirt in dry state, which is much lighter than a typical women's knit sweater and winter shirt. They usually weigh over 250 g/shirt.

[0015] The structural characteristics of the shirt of this invention enabled to manufacture a women's winter shirt of free size which is as warm as typical women's winter shirt but the packing volume and weight are smaller than those of a normal women's winter shirt.

BRIEF DESCRTIPTION OF THE DRAWINGS

[0016] FIG. 1 is the block flow diagram of the process of this invention.

[0017] FIG. 2 is the enlarged front view of the omasum-like structure at the outer-surface of the shirt at a normal state.

[0018] FIG. 3 is the side view of the omasum-like structure at a normal state.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Shown in FIG. 1 of block flow diagram, the procedure of this invention consists of including but not limited to 6 steps of weaving, tying-fabrics, heating, cooling, cutting and sewing. Un-tying is excuted at the cutting step. The omasum inner-wall-like textile structure is made and fixed at the tie-fabrics step and heat treatment step, respectively.

[0020] FIG. 2 is the enlarged top view of the omasum-like structure when the shirt is shrunk to a normal state. At this state the size of the shirt is almost that of baby's shirts for ages less than 3. Therefore the packing size is much smaller than conventional women's winter shirts.

[0021] FIG. 3 is the side view of the omasum-like structure of FIG. 2. Average peak density of the omasum-like structure in FIG. 3 is 260 peaks/100 cm2, horizontal 20 peaks/10 cm by vertical 13 peaks/10 cm. The peak's height of one omasum unit being 12 mm.

[0022] The degree of stretching of this shirt depends on the part of women's upper body where the shirt contacts. When a woman of breast size 34 inches wears the shirt the peak density of the omasum-like structure in FIG. 3 reduces to {fraction (1/4)} of the original density aroud the breast. Then the textile surrounding breast becomes semi-transparent while the slender waist part remains opaque. Combination of this opacity and semi-transparency along the women's bodyline renders a more sensual look.

[0023] When a women wears the shirt of this invention, the air is captured in the extended unit of the omasum-like structure surrounded by the shirts material and wearer's skin and acts as insulating layer rendering adequate thermal insulation.

Claims

1. A process for manufacture of a women's elastic free size winter shirts retaining an omasum inner-wall-like structure consisting weaving, followed by tie-fabrics, followed by heat treatment at a heating rate of 25° C./second, at 1.5 atmosphere, using steam, followed by cooling, followed by cutting, and followed by sewing.

2. The heating step in claim 1 includes but not limited to use of air.

3. The heating rate in claim 1 is from 1 to 50° C./second.

4. The heating rate in claim 1 is from 0.1 to 100° C./second.

5. The heating in claim 1 is accomplished at a pressure range of 1 atmosphere to 30 atmospheres.

6. The heating in claim 1 is accomplished at a pressure in the range of 1 atmosphere to 100 atmospheres.