Characteristics and production process of TPU coated webbing

TPU coated webbing has been widely used since the beginning to the world, from the beginning used to do pet straps and then quickly applied to harness straps, safety belts, waist belts, subway handles, bus handles, suspenders, helmets, chin straps, bags, decorative belts and other industries.

First, TPU coated webbing has the following advantages:

1, TPU and webbing tightly bonded together, so that water and even air can not penetrate into the product, so that the product will not be oxidized, fading, extending the service life of the product.

2,The surface of TPU coated webbing is smooth and flawless.

3, TPU coated webbing waterproof, oil, mildew, cold, dirt, abrasion, durability, weather resistance, UV resistance, good toughness, and so on!

Second, TPU coated webbing production process:

(1) ready to spare the webbing, the webbing must be high-temperature ironing, the purpose is to ensure that the webbing in the process of processing to maintain the stability of the webbing size. At the same time, it should be noted that the front and back of the webbing must always be in one direction, according to the order of the sequential placement. Because the webbing is easily twisted and knotted, the sequential transfer of the webbing from front to back prevents the material from being fed out of order.

(2) will be ready to dry TPU raw materials, out of raw materials in the moisture, TPU raw materials are very easy to absorb moisture, if not the moisture drying process, TPU in the production process will produce bubbles, in the process of pulling the rope will produce a fine line, this fine line is the line caused by the air bubbles before stretching. This fine line will affect the surface effect of TPU overlay webbing. In order to better deal with the moisture in the raw material, generally the production workers have to heat treat the raw material for at least 2 hours at a high temperature of 110℃.

(3) Modulate the cooling machine with cooling water inside. Set the water temperature to a temperature of 10 ℃, so that the cooling water circulation to the cooling water tank, cooling water tank can be a better product molding. The better the water cooling effect, the better the molding effect of the product surface; cooling is not good, the surface of the product will appear watermarks and water spots, watermarks and water spots in the product is not out of the molding is easy to produce scratches and melting lines.

(4) adjust the host temperature, the general staff is based on the temperature of the TPU raw materials to set the host temperature, set the temperature is lower than the raw materials to provide the temperature 5 ℃ -10 ℃. After the temperature rises, the host's rotational speed is also from low to high slowly add up; in the rotational speed before adding up, the staff should be towed to the webbing oven, from the mold mouth into the band mouth pull in, has been through the sink, pulling into the hauling machine, so that the webbing at an even rate of speed, open the host, so that the TPU raw materials and webbing synchronization of the extrusion. So you can get a complete coated webbing!

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