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Vacuum bag reusing structure

A vacuum bag and putty technology, which is applied in the field of composite material manufacturing, can solve the problems of deformation, insufficient strength of putty strips and vacuum films, and high production cost, and achieve the effects of reducing pollution, saving production cost and protecting the environment.

Inactive Publication Date: 2015-03-25
JIANGSU A STAR AVIATION IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the technical problem in the prior art that when the vacuum bag is torn off, due to the insufficient strength of the putty strip and the vacuum film, severe deformation occurs, it cannot be used continuously, and the production cost is high, the present invention provides a vacuum bag repeater use structure

Method used

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Embodiment Construction

[0012] The present invention is described below in conjunction with accompanying drawing:

[0013] A structure capable of reusing a vacuum bag, comprising a putty strip 2, a mold, and a vacuum bag 1, the putty strip 2 is bonded to the mold, and then the vacuum bag 1 is crimped on the putty strip 2, the mold, the putty strip 2 1. A sealed space is formed between the vacuum bags 1, which is characterized in that: it also includes a self-adhesive reinforcement strip 3, and the self-adhesive reinforcement strip 3 is pasted outside the vacuum bag 1, and the bottom of the self-adhesive reinforcement strip 3 is in the direction of the putty strip 2 match.

[0014] When in use, even if the vacuum bag 1 is in a complex environment, that is, when processing parts with excessive curvature or complex shapes, the corresponding curvature of the mold is also large, and the adhesion between the vacuum bag 1 and the putty is not good when the shape is complex. , and even affect the degree of ...

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Abstract

The invention relates to a vacuum bag reusing structure, and belongs to the field of composite material preparation. The structure comprises a putty strip, a die and a vacuum bag, and further comprises a self-adhesive reinforcing strip. The self-adhesive reinforcing strip is bonded outside the vacuum bag, and the arrangement direction of the self-adhesive reinforcing strip is consistent with the arrangement direction of the putty strip in a matched mode. By means of the structure, the vacuum bag can be reused without affecting sealing, and the self-adhesive reinforcing strip can enhance the strength of the vacuum bag and cannot be twisted and deformed through the vacuum bag, so that the bonding relation between the putty strip and the vacuum bag is affected indirectly; after the vacuum bag is used, the putty strip can be torn off along with the vacuum bag even if the environment is complex, and the technical effect that the self-adhesive reinforcing strip affects the putty strip and the vacuum bag is unexpected; the vacuum bag can be reused, the production cost in the composite material forming process can be saved, the pollution to the environment in the waste and old vacuum bag reusing process can be reduced, and the environment is protected.

Description

technical field [0001] The invention belongs to the field of composite material manufacturing, and in particular relates to a structure capable of reusing vacuum bags in the composite material production process. Background technique [0002] At present, in the field of composite material manufacturing and molding technology, whether it is prepreg molding technology or wet molding technology (also known as liquid molding technology (LCM for short), resin transfer molding and vacuum-assisted resin transfer molding in (VARTM), resin infiltration molding process (SCRIMP) and other processes, the use of vacuum bags is essential. Especially in the prepreg molding process, the utilization rate of vacuum bags is very high, so it is necessary to improve the recycling rate of vacuum bags very important. [0003] In actual work, the vacuum bag is fixed in the mold by a putty strip, and the vacuum bag is bonded to the putty strip, then a closed space is formed between the mold, the pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/44B29C70/54
CPCB29C70/44B29C70/54
Inventor 王洪亮孙海波于天池
Owner JIANGSU A STAR AVIATION IND
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