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Film stretching system and application thereof

A stretching system and film technology, applied in the field of B29C55/00, can solve the problems such as PET and other high-temperature film stretching requirements cannot be effectively met, and achieve the effect of good sheet uniformity, improved uniformity, and uniform heating

Pending Publication Date: 2022-06-21
江苏集萃功能材料研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although it can stretch various types of films, it cannot effectively meet the stretching requirements for high-temperature films such as PET. When dealing with more other types of films, it is still necessary to adjust the structure of the production line

Method used

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  • Film stretching system and application thereof
  • Film stretching system and application thereof
  • Film stretching system and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] like figure 1 and figure 2 As shown, the first aspect of the present invention provides a film stretching system, the structure of the system includes the following parts in sequence connected in sequence: unwinding part 1, preheating part 2, stretching part 3, setting part 4, Cooling part 5 , corona treatment part 6 and winding part 7 .

[0047] The unwinding part includes the structure of the unwinder 10, the guide roller 11 and the tension roller 12;

[0048] The preheating part includes the structure of preheating metal roller 13 and preheating rubber pressing roller 14;

[0049] The stretching section includes a longitudinal stretching unit; the longitudinal stretching unit includes 6 longitudinal stretching rolls, of which the first longitudinal stretching roll 8-1 and the second longitudinal stretching roll 8-2 connected to the preheating section constitute the first stretching roll Group 8; the third longitudinal stretching roll 9-1, the fourth longitudinal ...

Embodiment 2

[0066] The specific implementation of this embodiment is the same as that of Embodiment 1, except that the angle α is 200°, and the angle β is 60°.

Embodiment 3

[0068] The specific implementation of this embodiment is the same as that of Embodiment 1, except that the angle α is 180°, the angle β is 90°, the length of D is 720 mm, and the length of M is 250 mm.

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Abstract

The invention relates to the field of B29C55 / 00 of IPC patent classification, in particular to a film stretching system and application thereof. The system structurally comprises an unwinding part, a preheating part, a stretching part, a shaping part, a cooling part, a corona treatment part and a winding part in a sequential connection sequence. The film stretching system provided by the invention has good stretching stability and universality, can be used for preparing sheets with relatively high size uniformity, effectively reduces the slipping phenomenon, is suitable for being popularized in the field of sheet machining, and has a wide development prospect.

Description

technical field [0001] The invention relates to the B29C55 / 00 field of IPC patent classification, in particular to a film stretching system and its application. Background technique [0002] Stretching equipment is often used in the preparation of films such as PE, PP, PET, etc. When using double-stretching equipment, the film is generally formed by mixing, casting and tape casting followed by longitudinal stretching and / or transverse stretching. . [0003] The prior art CN214820840U discloses a biaxially stretched BOPE film production equipment; the prior art CN212920420U discloses a longitudinal stretching equipment for BOPP film production; the prior art CN204076777U discloses a full twin-screw extruder BOPET film production line. Most of the equipment disclosed in the prior art is only suitable for stretching one type of film. Due to the different preheating and stretching temperatures required for different types of films, one production line cannot meet the stretching...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C55/06B29C71/04B29C35/10B29C35/06B29C35/16
CPCB29C55/065B29C71/04B29C35/10B29C35/06B29C35/16B29C2035/0822
Inventor 丁海军陈小平鄢勋胡毅王勇任天斌
Owner 江苏集萃功能材料研究所有限公司