Views: 152 Author: Site Editor Publish Time: 2022-07-25 Origin: Site
There are many types of needle punched non-woven fabrics that non-woven needle punching machine can produce, including ordinary carpet, geotextile filter cloth, and needle punched anti-sticking. The raw materials can be selected according to the variety, and the process can be adjusted.
What are the characteristics of the needle plate of the non-woven needle punching machine?
What is the production process of non-woven needle punching machine for different products?
Why should high shrinkage fibers be mixed in the production process of non-woven needle punching machine?
Due to the wide variety of non-woven needle punching machines, the functional structures are different. So there is a big difference between the needle plates of acupuncture machines.
(1) Materials include wooden needle plate, rubber-plastic needle plate, epoxy resin needle plate, copper needle plate, magnesium alloy needle plate, aluminum-magnesium alloy needle plate, lithium-magnesium alloy needle plate, etc.
(2) The arrangement of the eye of the needle is also very different, generally divided into herringbone, double glyph, messy shape, etc. It is necessary to formulate a reasonable needle arrangement sequence according to the purpose.
Production process of hot air bonded non-woven fabric (non-bonded cotton):
Opening → Carding → Laying → Oven Hot Air Reinforcement (melting low-melting fiber) → Trimming + Rolling → Packaging
Production process of chemically bonded nonwovens (sprayed cotton):
Opening→Carding→Laying→Sizing (Chemical Fiber Adhesive)→Hot Air Reinforcement in Oven (Curing Adhesive)→Edge Trimming + Rolling→Packaging
Production process of needle punched nonwovens:
Opening → Carding → Laying → Pre-needling → Main Needling (one or more needling machines) → Trimming + Rolling → Packaging
Spunlace nonwoven production process:
Opening → Carding → Laying → Hydroentanglement + Embossing → Drying → Trimming + Rolling → Packaging
In the production process of non-woven needle punching machine, high shrinkage fibers, such as polyvinyl chloride fibers, are mixed into the fiber web. After needle punching, it can be treated with hot air, steam or hot water to increase the density of needle punched non-woven materials.
Depending on product density requirements, the content of high shrinkage fibers in the web can vary widely. If the content of high shrinkage fibers in the fiber web is 80%, the shrinkage rate after heat treatment can reach 50%.
The method can increase the density of the needle-punched non-woven material, reduce the needle-punching marks on the surface, and has good resistance to repeated bending and layering, and is suitable for use as a synthetic leather base fabric. However, since the high shrinkage fibers lose most of their strength due to structural changes during heat treatment, the product strength and dimensional stability are insufficient.
To meet these growing demands, DongYang AoLong Non-woven Equipment Co., Ltd. has committed to providing the increasing of non-woven needle punching machines, and make them more effective, reliable, and consistent.