Lace fabric refers to the product formed by using elastic yarn abrasion tester on a multi-comb or Jacquard Raschel warp knitting machine, also known as Raschel fabric and Jacquard fabric. Generally, chemical fiber raw materials such as nylon, polyester, spandex, viscose, natural fiber raw materials and gold and silver are woven into a whole floor pattern, which is called a whole piece of lace fabric; or a lace strip fabric, which is called lace trim. If spandex is added to the fabric, it is also called stretch lace trim or stretch lace fabric, or simply stretch lace. If no spandex is added, it is called non-elastic lace or non-stretch lace fabric.
Ordinary lace fabric processing technology is relatively simple, that is, directly into the dyeing vat for dyeing, and then finishing and shaping. The color of the lace fabric product produced in this way is dim, and the flower pattern pitch and flower pattern width are also retracted greatly, which limits the wider usage of the finished lace fabric. The novel dyeing and finishing process of lace fabric mentioned in this article has added two pretreatment processes: degreasing and pre-shaping. The color vividness of the finished lace fabric testing equipment has been significantly improved, and the flower patter pitch and flower pattern width of the lace fabric are stable without shrinkage. The shape is fuller and more three-dimensional. As a result, the grade level of the products is improved, which is essential for the lace fabric factory or dealers to win new customers and orders.
Lace fabric degreasing process
There are two main methods of degreasing for lace fabrics: degreasing in the dyeing tank or degreasing in the flat degreasing washing machine. When degreasing in the dyeing tank, problems are extra procedures, meaning long time, complicated process and high cost. While, when degreasing in the flat degreasing water washing machine, the production efficiency is higher and at the same time, the amount of additives is reduced, and water and energy are saved.
The degreasing fluid is added evenly in each degreasing tank according to the processing lace fabric volume, and the acid washing fluid is replenished in the acid washing tank; in addition to a large mesh drum with a diameter of 1 200 mm, the degreasing vabration tank has two built-in oscillations with a diameter of 800 mm. The drum, powerfully hits the water, greatly improves the penetration of the degreasing liquid to the fabric, and the water temperature is more uniform due to the stirring of the degreasing liquid, which improves the washing efficiency.
There are many types of lace fabrics, and the patterns of lace fabric or lace trim are ever-changing. Every new lace pattern designed by the weaving factory needs an unique ID. In order to prevent the various lace patterns from being confused during the production process, It is best to cut a 10.0 cm square cloth sample from the lace cloth beginning part and nail it to the upper corner of the engineering work card to distinguish other lace patterns and find problems easily.
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