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Longitudinal stretcher for biaxially oriented film

A biaxially oriented film, longitudinal stretching technology, applied in the direction of flat products, household appliances, other household appliances, etc.

Inactive Publication Date: 2012-08-08
GUANGDONG SHICHENG PLASTIC MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the transmission ratio of the transmission pair is fixed, the stretching ratio of the film stretched by the stretching roller group is also constant. For films that need to be stretched with different stretching ratios, the traditional longitudinal stretching The machine is obviously unable to meet the needs

Method used

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  • Longitudinal stretcher for biaxially oriented film
  • Longitudinal stretcher for biaxially oriented film
  • Longitudinal stretcher for biaxially oriented film

Examples

Experimental program
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Embodiment Construction

[0011] Such as Figure 1-3 As shown, a longitudinal stretching machine for a biaxially stretched film includes a preheating roller group 1 that can accommodate a plastic film in an S-shape, a stretching roller group 2 and a thermal insulation and setting roller group 3, and a preheating roller group 1 It is placed on the input side and the output side of the stretching roller group 1 separately with the thermal insulation and setting roller group 3. Among them, the preheating roller 1.1 of the preheating roller group 1 and the heat preservation and shaping roller group 3 and the shaping roller 3.1 are all hollow rollers with a flow channel inside, and the heating fluid is passed through the flow channel to make the roller surface reach a certain temperature. It is heated by the preheating roller group 1 to the required stretching process temperature before being transported to the stretching roller group 2. After the stretching is completed, it is continuously heated by the th...

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PUM

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Abstract

The invention discloses a longitudinal stretcher for biaxially oriented film. The stretcher comprises a preheating roller group enabling plastic film to circumambulate in a S shape, a stretching roller group and an insulation fixing roller group, wherein each roller of the preheating roller group, the stretching roller group and the insulation fixing roller group is driven by a servo motor to rotate, with precise control of speed of each roller. Especially, a speed ratio of a front and a back stretching roller of the stretching roller group is adjusted to achieve that a stretch ratio of the film stretched by the stretching roller group is adjustable within the process requirement, so as to meet process requirements of different products.

Description

technical field [0001] The invention relates to the technical field of processing equipment for biaxially stretched films, in particular to a longitudinal stretching machine. Background technique [0002] The biaxially stretched film is made by casting the polymer plastic melt through a long and narrow die to form a film, and then stretching it longitudinally and transversely in a special stretching machine at a certain temperature and a set speed. And the film made by proper cooling or heat treatment or special processing (such as corona, coating, etc.). [0003] The longitudinal stretching machine of the biaxially stretched film is composed of a preheating roller group, a stretching roller group and a heat preservation and setting roller group. The preheating roller group and the heat preservation and setting roller component are placed on the input side and the output side of the stretching roller group. In the traditional longitudinal stretching machine, the stretching ...

Claims

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Application Information

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IPC IPC(8): B29C55/12B29L7/00
Inventor 张春华
Owner GUANGDONG SHICHENG PLASTIC MACHINERY