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Blow molding processing method of CPP film

A processing method and film tube technology, which is applied in the field of CPP film blow molding, can solve the problems of easy breakage of the film tube and unstable traction of the film tube, so as to increase the utilization rate, alleviate the unstable traction, and reduce the force Effect

Active Publication Date: 2019-03-01
CHONGQING RUITING PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a blow molding processing method of a CPP film to solve the problems of unstable traction of the film tube and easy breakage of the film tube during the blow molding process of the CPP film in the prior art

Method used

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  • Blow molding processing method of CPP film
  • Blow molding processing method of CPP film

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Embodiment Construction

[0032] The following is further described in detail through specific implementation methods:

[0033] The reference signs in the drawings of the description include: frame 1, extruder 2, right-angle head 21, air-cooled water-cooled device 3, cooling air ring 31, cooling water ring 32, top belt line 4, traction roller 5, passive Rubber roller 51, active chrome-plated steel roller 52, spray barrel 6, slide plate 7, slide rod 8, rubber block 9, pressure column 10, pressure plate 11, spring 12, cleaning roller 13, guide roller 14, winding device 15, film tube 16.

[0034] The embodiment is basically as figure 1 and figure 2 Shown:

[0035] A blow molding processing method of a CPP film, the production and processing method needs to use a blow molding processing mechanism of the CPP film, the blow molding processing mechanism of the CPP film includes a frame 1 and an extruder 2, the extruder 2 is equipped with Right-angle machine head 21, air-cooled water-cooling device 3 is i...

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Abstract

The invention relates to the field of high polymer materials, in particular to a blow molding processing method of a CPP film. The blow molding processing method of the CPP film comprises the following steps that 1, a thin-wall tube is extruded, specifically, PP raw materials are added to a barrel of an extruder, the materials are rotated, extruded, stirred and pushed by a screw, and finally the materials are extruded into the thin-wall tube by a right-angle machine head, wherein the screw compression ratio is 2.8-4.0, extrusion temperature of the right angle machine head is 200-215 DEG C; 2,the thin-walled tube is blown into a thin-film tube, specifically, compressed air blows the thin-walled tube into the thin-film tube; 3, the thin-film tube is cooled and shaped, specifically, the thin-film tube is cooled by air cooling first and then water cooling; (4) the film-tube clamp is flattened, specifically, the thin-film tube is flattened through two rotating belt wires in an inverted V shape; and 5, the thin-film tube is pulled and winded, specifically, the flattened thin-film tube is compressed by a pulling roller and then enters a winding device by a guiding roller. The blow molding processing method of the CPP film is used for solving the problems in the prior art that the thin-film tube is unstable in traction and prone to being broken in the process of CPP film blow moldingprocessing.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a blow molding processing method of a CPP film. Background technique [0002] CPP is a polypropylene film produced by the casting extrusion process in the plastics industry. The film is widely used in various packaging of human life after printing and bag making. [0003] In the prior art, in the production and processing of CPP film, either tape casting method or blow molding method can be used. When blow molding is used, due to the particularity of PP materials, flat extrusion down blowing method is generally used. For processing, when using this method, first the PP raw material is melted and plasticized in the extruder, and then the molten raw material is extruded downward through the downward facing right-angle head of the blow molding machine to form a thin-walled tube, and then compressed Air blows the thin-walled tube to form a film tube. The film tube is cooled and shap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/28
CPCB29C55/28
Inventor 曹玉毛潞
Owner CHONGQING RUITING PLASTIC
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