TPU high and low temperature multi-layer in mold composite sheet mold

Description :

　　In response to the increasing use and different requirements of TPU products, Jinwei Machinery has developedTPU high and low temperature multi-layer co extruded sheet moldThis type of mold adopts a special internal insulation structure and optimized cooling method,Make the temperature difference between different materials reach 60 ° C during multi-layer compositeAnd it can be turned on for a long time for production. Due to the use of material cavity composite extrusion, the TPU composite sheet produced by this mold has different composite layers that are uniform and uniform, with a thickness deviation of within 3% of the product.

　　Manually adjust the elastic lip or movable upper lip design to meet different thickness requirements for extrusion.

　　The mold body is made of mold steel or imported alloy steel, and undergoes a special heat treatment process to extend the life of the mold.

　　The surface of the flow channel is coated with hard chromium, with an average thickness of 25 μ m~50 μ m, and is mirror polished with special anti sticking treatment.

　　The mold head fasteners use 12.9 high-strength bolts.

　　The heating element adopts durable stainless steel heating rods and heating coils.

　　Mold lip process: Short wave pulse local hardening treatment, causing instantaneous gasification or even plasma formation on the surface of the mold, and generating shock waves on the surface to strengthen the material surface. And the surface hardness is high, the metallographic structure is refined, and the wear resistance is better than traditional quenching processes after local hardening treatment with short wave pulses. The processed mold lip has excellent straightness and wear resistance, which enables the molding of TPU sheets or films with good results.

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• TPU high and low temperature multi-layer in mold composite