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Method of two-way stretch for producing polystyrene film pump pipe

A technology of polystyrene film and production method, which is applied in the production field of biaxially oriented polystyrene film, can solve problems such as difficult formulation, difficult adjustment of production process, tight supply of raw materials, etc., and achieves high shrinkage rate and elastic modulus Great effect of saving foreign exchange

Inactive Publication Date: 2006-02-01
GUANGDONG HUAYE PACKING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the difficulty in mastering the formula, the difficulty in adjusting the production process, and the tight supply of raw materials, there have been no reports of mass production of such products.

Method used

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  • Method of two-way stretch for producing polystyrene film pump pipe

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Embodiment Construction

[0008] Below, the present invention is further described with reference to examples.

[0009] 147 kilograms of transparent high-impact polystyrene resin and 3 kilograms of toughening agent were fully stirred and mixed on a mixer for 15 minutes; the above-mentioned mixture was fed into an extruder called twin-screw vacuum exhaust and melted. , extrusion, the melting temperature is controlled between 210 °C and 230 °C; through the precise metering and filtration of the gear pump, the melt is sent to the T-die for extrusion, cast into thick sheets, and the first thickness measurement is carried out at the same time. , the thickness of the thick sheet is controlled between 1.5 mm and 4.0 mm; the thick sheet is preheated on a longitudinal drawing machine, and the preheating temperature is controlled between 60 ° C and 80 ° C, and the stretching and shaping are performed at the same time; Preheating is carried out on the stretching machine, and the preheating temperature is controll...

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Abstract

A bidirectionally stretched polystyrene film with high contractibility is prepared from the transparent polystyreno resin with high impact strength (95-97 Wt%) and toughening agent (3-5 Wt%) through mixing, stirring, fusing-extruding out, sudden cooling to become thick sheet, preheating, longitudinal and transverse stretchings, fixating shape, corona treating, winding, ageing and cutting by needed sizes. Its advantages are high tensional strength, elastic modulus, lustre and contractibility.

Description

[0001] Technology [0002] The invention relates to a production method of a plastic film, in particular to a production method of a biaxially stretched polystyrene film. Background technique [0003] Biaxially oriented polystyrene film is a new type of green packaging material developed in recent years. Compared with traditional polyethylene and polyvinyl chloride films, it has high strength, high rigidity, non-toxicity, easy degradation, and easy coloring. , It has the advantages of good gloss and transparency, convenient processing, etc. It is widely used in the packaging of various items such as handicrafts, daily necessities, metal products, especially food. At present, the consumption of biaxially oriented polystyrene film in foreign developed countries, such as the United States, Canada, Japan, etc., has accounted for more than 60% of all films. As early as the "Eighth Five-Year Plan" period, my country began to try to introduce technology to produce such products. Ho...

Claims

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Application Information

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IPC IPC(8): C08L25/08C08J5/18B29C47/00B29C55/02B29C71/04
Inventor 陈友标
Owner GUANGDONG HUAYE PACKING MATERIAL
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