RF polymer welding machine.Working principle of embossing machine

　　Working principle of embossing machine

　　The embossing machine is composed of a number of hard rolls and soft rolls which are smooth in general. The hard roller is a metal roller, which is highly polished or engraved with dense parallel oblique lines at the end of the profile, often accompanied by heating installation; The soft roll is a fiber roll or a polyamide plastic roll. Fiber roller is made of fiber as raw material under high pressure, according to fiber raw materials are cotton paper roller, wool paper roller and linen paper roller. The rolling point composed of a hard roll and a soft roll is called a hard rolling point, and the rolling temperature is 60 ~ 70℃, and the water content of the fabric is 5 ~ 10%. After the fabric is rolled and pressed, the yarn is flattened, the situation is smooth, the luster is strengthened, and the feel is stiff, which is called flat calendering.

　　The rolling temperature is generally 40 ~ 60℃, and the yarn is slightly flat after the rolling of the fabric, with mild luster and soft feel, which is called soft rolling. When the embossing machine is equipped with multiple rolls, it can control the different combination of soft and hard rolling points and the change of pressure, temperature and insertion system to obtain the different general luster. If the fabric is first dipped in the resin condensation and then pre-baked and stretched at the end, it can obtain a more durable luster after rolling.

　　Calender is also called calender. The first step of heavy leather repair. Manipulating the plasticity of the fiber under the premise of mixed heat flattens the fabric profile or rolls out parallel precise oblique lines to promote the picking process of the fabric luster.

　　Operation process: with pendulum calender or sole leather rolling machine operation. In general, the operation is two times: the first time is to compact the leather body, after homogenizing the wet, and then pile the balanced water; The second time is calender, calender after the general situation of the heavy leather is smooth and bright, the leather body is tight, that is, the leather is finished.

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