Melt mixing mechanism for PVC thermal shrinkage film

A technology of melt mixing and heat-shrinkable film, which is applied to flat products, household appliances, and other household appliances, etc. It can solve the problems of film product thickness difference, multiple equipment, uneven coloring, etc.

Inactive Publication Date: 2017-08-04
YANGZHOU FANYA THIN FILM MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calendering (casting) stretching molding method, fine processing, large width of film products, good thickness uniformity, but many equipment, long process, large investment and high operating costs
[0004] As we all know, even if there is a sli...

Method used

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  • Melt mixing mechanism for PVC thermal shrinkage film

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Embodiment Construction

[0013] A PVC heat shrinkable film melt mixing mechanism, the melt mixing mechanism includes an extruder 1, a film blowing head 4 and a static mixer, and a static mixing is set between the extruder 1 and the film blowing head 4 One end of the static mixer is combined with the screw head of the extruder 1, and the other end of the static mixer is connected with the connecting section of the film blowing head 4 through a flange. The static mixer is composed of several series connected with each other The twisted elements 2 are composed of the twisted elements 2 fixedly arranged in the barrel of the extruder 1, and the twisted elements 2 are interlaced with each other to form an angle of 90°, and the diameter of the static mixer is the same as that of the extruder 1 The inner diameters of the barrels are the same, and a strip heater 3 is arranged outside the barrel of the extruder 1 .

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Abstract

The invention relates to a melt mixing mechanism for a PVC thermal shrinkage film. The melt mixing mechanism comprises an extruder, a film blowing machine head, and a static mixer which is arranged between the extruder and the film blowing machine head, wherein one end of the static mixer is in combination connection with a screw head part of the extruder, and the other end of the static mixer is connected with a connecting section of the film blowing machine head through a flange; the static mixer is composed of a plurality of twisting elements which are connected in series and are in contact with each other; the plurality of twisting elements are fixedly arranged in a barrel of the extruder. According to the melt mixing mechanism for the PVC thermal shrinkage film, material flows in a gyring manner relative to spiral curves of the twisting elements; melts are overturned to realize radial mixing, so that the mixing and homogenizing effects of the melts are improved; the melts in the static mixer are mixed through own flowing energy, so that the shearing effect is low, and metal pigment powder is prevented from being further shorn and damaged.

Description

technical field [0001] The invention relates to a PVC heat shrinkable film processing equipment, in particular to a PVC heat shrinkable film melt mixing mechanism. Background technique [0002] PVC heat shrinkable film has moderate shrinkage rate and shrinkage force, good transparency, excellent mechanical properties, and high cost performance. It is widely used in the packaging of daily chemical products, electronic appliances, plastic hardware, glass ceramics and other commodities. It not only has a good protective effect on the packaging, but also makes the appearance of the product more vivid and beautiful, and improves the grade of product packaging. It is currently an ideal film packaging material. [0003] PVC heat shrinkable film molding methods can be classified into two categories, namely blow molding (secondary inflation) molding and calendering (casting) stretch molding. Blow molding, simple processing equipment, low investment, flexible replacement of film vari...

Claims

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Application Information

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IPC IPC(8): B29C55/28B29C47/36B29L7/00B29K105/02
CPCB29C55/285B29C48/362B29K2105/02B29L2007/00
Inventor 李海李杰沈雪梅
Owner YANGZHOU FANYA THIN FILM MATERIAL CO LTD
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