Process flow of needle punched non-woven fabric

Needle-punched non-woven fabrics are widely used in automotive interiors, environmental protection materials, civil materials, clothing and bedding and other fields; it can also be used for back glue, dusting, singeing, calendering, film coating, flame retardant according to customer needs , waterproof, oil-proof, cutting, composite and other special finishing.

Low gram weight needle-punched non-woven fabrics are mainly used in automotive interiors such as engine compartments, trunks, coat racks, sunroof sunshades, bottom guards, seat linings, etc. Apparel lining, bedding mattress, sanitary materials, greening and other fields.

Process diagram of needle-punched non-woven fabric

I. Weighing and feeding

This process is the first step of needle-punched non-woven fabric. In the first process, according to the prescribed proportions of various fibers, such as black A 3D-40%, black B 6D-40%, white A 3D 20%, weigh the materials according to the proportions and record them to ensure the stability of product quality .

If the feeding ratio is wrong, the style of the produced product will be different from the standard sample, or there will be periodic product color differences, resulting in poor batch size.

For products that are mixed with various raw materials and require high color difference, try to disperse the materials as evenly as possible during manual feeding. If possible, use two cotton blending equipment to ensure that the blending is as uniform as possible.

Second, opening, blending, carding, spinning, laying

These actions are the decomposition process of several equipment work when the fiber becomes non-woven. All rely on the device to complete automatically.

The stability of product quality depends to a large extent on the stability of the equipment. At the same time, the production and management personnel's familiarity with equipment and products, their sense of responsibility and experience, can be timely to a large extent. Abnormalities are found and dealt with in a timely manner.

III. Needling

Use: Use needle punching equipment, generally the minimum gram weight is 80g, mainly used for automobile trunks, sunroof sunshade plates, non-woven fabrics for engine rooms, automobiles Bottom guard, coat rack, seat, main carpet, etc.

Key points: According to the product style and requirements, adjust the needling conditions and determine the number of acupuncture machines to be used; regularly confirm the degree of needle wear; set the frequency of needle replacement; use special needle plates when necessary.

Four. Inspection + Rolling

After the needle punching of the non-woven fabric is completed, the non-woven fabric is considered as the preliminary processing.

Before the non-woven fabric is rolled into a roll, it will go through automatic metal detection (as shown on the left, the imported needle detector) - in this process of needle detection, if it is detected that the non-woven fabric contains more than 1mm of metal Or when the needle is broken, the equipment will alarm and stop automatically; effectively preventing the metal or broken needle from flowing into the next process.

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