Bidirectional drawing machine for polymide films

A technology of polyimide film and biaxial stretching, which is applied in the field of plastic machinery, can solve the problems of high production equipment requirements, inability to produce, and high product prices, and achieve consistent thickness, energy-saving utilization, and product quality improvement Effect

Inactive Publication Date: 2012-02-08
万达集团股份有限公司
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  • Abstract
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Problems solved by technology

Due to its good comprehensive performance, its use has gradually expanded, and it has been widely used in aviation and navigation. However, due to the high requirements for the production equipment of polyamide biaxially stretched films, continuous heating is required, and general biaxially stretched machines cannot Production, and high energy consumption, expensive products, can not meet the needs of the domestic market

Method used

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  • Bidirectional drawing machine for polymide films
  • Bidirectional drawing machine for polymide films
  • Bidirectional drawing machine for polymide films

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Experimental program
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Embodiment Construction

[0009] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0010] A bidirectional stretching machine for polyimide film, comprising a pin plate chain mechanism, a stretching machine box 16, a vertical chain and a transmission mechanism, an automatic expansion mechanism, an automatic closed-loop heating system, and an internal circulation bellows, and is characterized in that The extension machine box is made of double-layer stainless steel, and the middle is filled with high-temperature heat-insulating materials; the vertical chain and the transmission mechanism are composed of the main drive motor 1, the pulley 2, the main shaft 8, the guide key 5, and the sprocket 7. The main shaft 8 installed on the wallboard 3 is connected by transmission, and is connected with the sprocket 7 through the guide key 5. The rotation of the sprocket 7 drives the vertical chain 6 to move forward, and then drives the polyimide fi...

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Abstract

The invention provides a bidirectional drawing machine for polymide films; the bidirectional drawing machine comprises a needle plate type chain mechanism, a drawing machine box body, a vertical chain and transmission mechanism, an automatic expanding mechanism, an automatic closed loop heating system and an inner circulating air bellows, wherein the vertical chain and transmission mechanism comprises a main driving motor, a belt pulley, a main shaft, a guide key and a chain wheel; the automatic expanding mechanism comprises a speed reducing motor, a small chain wheel, a breadth adjusting screw rod, a nut and a sliding seat; the electric heating system comprises an embedded type electric heater, a temperature sensor, a temperature controller and an upper computer; by adopting the bidirectional drawing machine, the films are uniformly stressed during stretching and have consistent thickness and high quality, the space of a heating area is reduced, the heating power is minimized, the electric energy is saved, and the exhaust emission is reduced; and therefore, the bidirectional drawing machine is more environmental-friendly.

Description

Technical field [0001] The invention relates to a plastic machine, in particular to a film bidirectional stretching machine. technical background [0002] Polyimide film is a new type of high temperature resistant organic polymer film, which is formed by polycondensation of pyromellitic dianhydride and diaminodiphenyl ether in a very strong solvent dimethylacetamide and then salivated. imidized. It is currently the best film insulating material in the world, with excellent mechanical properties, electrical properties, chemical stability, high radiation resistance, high temperature resistance and low temperature resistance -269°C to +400°C. In 1959, DuPont Company of the United States first synthesized aromatic polyimide. In 1962, it tried to make a polyimide film (PI film). In 1965, it began production. The brand name is KAPTON. At the end of the 1960s, my country could produce polyimide films in small batches, mainly producing unidirectional films. In recent years, the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/16
Inventor 巴银华尚吉国张英江周志晓
Owner 万达集团股份有限公司
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