JPS5831429B2 - Manufacturing method for highly elastic lace - Google Patents

Description

[Detailed description of the invention] This invention is a method for manufacturing a lace that is stretchable in all directions.

In recent years, women's underwear, foundations, swimwear, etc. have become more luxurious, and lace is often used, but these laces have poor elasticity or are limited to one direction and are highly elastic. It was not suitable for women's clothing and underwear, especially those with high elasticity such as foundations and swimming wear.

All of the stretchable laces disclosed in JP-B No. 41-17028 and JP-B No. 41-17029 are related to embroidered laces, and are limited to those in which the embroidered periphery lacks elasticity at all, such as knitted laces and plaited laces. In addition, a stretchable lace-like knitted fabric using tricot is known, but this is only stretchable in one direction; It showed almost no elasticity in any direction.

The object of the present invention is to make laces such as bar lace, tulle, raschel, and torsion lace that can expand and contract in both warp and warp directions.

In this invention, a filament yarn made of yarn having rubber-like elasticity, such as polyurethane, natural rubber, synthetic rubber, etc., is used as a core yarn, a water-soluble yarn is used as an inside cover yarn, and a water-insoluble yarn is used as an outside cover yarn. The core yarn is drafted 2 to 3 times per minute, the rotation speed of the spindle is approximately 5 ooo times per minute, and the number of twists is approximately 2000/m. A method for producing highly elastic lace, which is characterized by knitting or composing the lace using a conventional method, and then dissolving and removing the inside cover yarn by immersing it in a solvent mainly composed of water or by bleaching or the like. It is.

Example 1 Spandex filament 40 denier was used as the elastic yarn as the core yarn, water-soluble polyvinyl alcohol yarn 45 denier was used as the inside cover yarn, Cooley nylon 50 denier was used as the outer cover yarn, draft was 2.3 times, After composing a torsion lace with a floral pattern using a plaiting machine using a thread that had lost its elasticity and had a m twist number of about 2000 and was obtained by covering at a rotation speed of about 5 ooo times per minute. When the water-soluble threads were completely dissolved and removed in a warm water bath, a lace was obtained which had shrinkage of about 45% in both the weft and weft directions compared to the as-composed composition and was highly stretchable in all directions.

Example 2 Spandex filament 40D was used as the core yarn as the elastic yarn, water-soluble polyvinyl alcohol yarn 45D was used as the inside cover yarn, and 60 count single cotton yarn was used as the outer cover system. Covering takes 80,007 minutes, and the number of twists per meter is approximately 200.
After forming torsion lace using a braiding machine using covered yarn that had lost its elasticity of 0, it was immersed in warm water to dissolve and remove the water-soluble yarn. A lace that contracted by about 45 degrees in the latitudinal direction and expanded and contracted in all directions was obtained.

Since the structure of the present invention is as described above, lace is knitted using a knitting lace machine or a braiding machine that expresses a designed pattern according to the latent shrinkage rate of the thread that has lost its elasticity, and A desired lace can be manufactured by dissolving and removing the inner cover yarn made of fibers by treatment with a bath containing mainly water.

Since the lace obtained by this method can freely expand and contract in the warp and line directions, it is an extremely effective invention that can be widely used in fields that require elasticity, such as underwear, foundations, and swimwear, and increases the value of products.

Claims (1)

[Claims] 1 Draft 2 to 3, using a thread having rubber-like elasticity as a core thread, a thread made of water-soluble fiber as an inner cover thread, and a thread made of horizontal soluble fiber as an outer cover thread.
Using a yarn with a twist count of about 2000 per m covered at a rotational speed of 8000 times/min, it was braided using a knitting lace machine or a braiding machine. A method for producing highly stretchable lace characterized by dissolving and removing soluble fibers.