(1) the pressure loss is small when the heat shrinkable label is produced. Press the pressure is passed directly to the plastic by mould, low pressure loss, is conducive to the fluidity of plastics less E.

(2) the mold is completely closed when the plastic is finally formed. With direct plastic cavity, and feeding cavity is a continuation of the cavity, open mold feeding, forming completely closed before the end.

(3) the mold is relatively simple groove. The mold does not need to set the gating system and the complex ejection device, easy to use, can form a large area of the product, or the use of multi cavity mold forming a number of products.

(4) less material consumption, beautiful appearance. The mold does not have the gating system, therefore consumes the material to be few; the product does not have the gate mark, causes the dressing to be easy, the product outward appearance is beautiful.

(5) products subject to more restrictions. Because the compressor pressure directly to the plastic, so it is beneficial to molding fibrous plastic, and in the process of forming.1 Zhang fiber not brittle broken, so the product with relatively high strength, shrinkage and deformation of small, relatively homogeneous performance. However, the formation of fiber like plastic, the product flying thick, to bring some difficulties to the dressing process. As the pressure is passed directly to the plastic, it is not possible to form a product with a fine and easy to break insert. The thickness of the product is thicker, and the thickness of each die is the same as the thickness of the product.

(6) long production cycle and low efficiency. Because the plastic is not fully plasticized in the feeding cavity, the production cycle is long and the efficiency is low, and the product is not easy to form the complex shape and the wall thickness is relatively large.

(7) die wear. The mold is directly affected by the high temperature and high pressure, so it has higher requirements on the mold material.

Http://www.ledecable-electronics.com shrink film label