Plastic packaging of hollow board production line
DATE：2021/5/5 8:47:50 / READ： / SOURCE：This station
Plastic packaging of hollow board production line
Hollow board production line www.handern.comThere are two kinds of extrusion compound method: blowing expanding coextrusion compound method and T-type die coextrusion. Multilayer composite film method, north of the flat film. According to the classification of multi-level in connector and polar channel ice tape casting composite method, the former is tube, and the latter is multi-level method. The correct design of composite die head and the meeting of raw materials include pre mold composite method, in mold composite method and maple outer composite film. Hollow board production line www.handern.com
The selection of raw materials and the control of operating conditions are the key to normal production and high quality coextrusion
Coextrusion T-die tape casting composite film, coextrusion die tape casting composite process is to coextrusion composite process with the same
The extrusion and tape casting of T-die are combined to complete the production process of more layers of film at one time. In coextrusion process, the raw materials should be coextruded with mutually compatible resin, and the resin brand with smaller viscosity difference in molten state should be selected, so as to reduce the phenomenon that the resin with lower viscosity encapsulates the resin with higher viscosity in the composite die. Hollow board production line www.handern.com
Coextrusion T-mouth incompatible resin, coextrusion should use the same two kinds of resin have compatibility. In order to have good composite strength, phase solvent is used as the intermediate layer for coextrusion. Film / adhesive / film, film / extrusion film, film / coating agent / adhesive / extruder 9 - third extruder 10- Winding film, film / printing ink / glue / film, film / coating agent / printing ink / glue / film, coating agent / film / coating agent / printing ink / glue / film, film / printing ink / glue / extrusion film / extrusion film, film / coating agent / glue / extrusion film / film, extrusion film / extrusion film / extrusion film, Extruded film / extruded film. The coating agent is composed of PVDC, nitrocellulose resin and PVC, and the film is composed of: OPP, pet, nylon, cellophane, CPP, etc PE, polypropylene, EVA, PVDC, nylon, etc. Hollow board production line www.handern.com
Kouchiko Co., Ltd. of Japan uses three extruders to produce multilayer composite films by CO extrusion and inflation. This is a five layer coextrusion blown film of three kinds of resins The second coextrusion process can get multilayer film, which is cheap; Second, compared with other compounding, it can produce extremely thin multi-layer structure film; third, the fluidity and adhesiveness of resin are far apart, and it is difficult to compound processing, it can also be processed and molded; fourth, the combination of resins with different properties can achieve performance control; fifth, CO extrusion method does not need AC agent and sizing agent, and there is no solvent odor. The 8-stage coextrusion membrane is composed of three kinds of five layers of abcba, and can also produce two kinds of two layers, three kinds of three layers, three kinds of five layers and other composite membranes. The minimum thickness of the composite film is 50pm, the maximum is 200um, the minimum folding diameter is 400mm, the maximum is 1000mm. Hollow board production line www.handern.com
The basic resin composition of Bachuan gongjiupu is as follows:
A inner and outer layers: LDPE，LLDPE，HDPE, EVA
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