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A protective film for the surface of a large curved surface mold

A surface protection film and mold technology, which is applied in the sealing of the mold surface protection film to the seam, and in the field of complex curved surface mold surface protection film, can solve the problems of difficult recycling, frequent tape replacement, high temperature, etc., to increase the number of reuse, Achieve seamless docking and reduce the cost of use

Active Publication Date: 2018-08-07
TECHSTORM MATERIAL TECH SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applying polytetrafluoroethylene (PTFE) non-stick lining on the mold can avoid the use of release agent and have uniform thickness, but it also has its disadvantages: the price of PTFE material itself is high, and the material cost is high; PTFE non-stick layer It is not wear-resistant, and it is easy to wear and damage during use; due to the processing method, the film is easy to penetrate the resin, which affects the service life of the film and the demoulding effect; the processing of PTFE requires high temperature and is difficult to process; the fluorine content causes its processing Both the process and the disposal are harmful to the environment; it is difficult to seal the seam, and tape is often used to seal it when used on the mold. The tape is replaced frequently, time-consuming, and the cost increases; PTFE is a thermosetting material, which is difficult to recycle.

Method used

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  • A protective film for the surface of a large curved surface mold

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Embodiment approach

[0059] As an embodiment of the present invention, the thickness of the grid cloth air-guiding layer is 5-20 μm.

[0060] As an embodiment of the present invention, the thickness of the pressure-sensitive adhesive self-adhesive layer is 40-150 μm.

[0061] As an embodiment of the present invention, the thickness of the polymer functional layer is 40-200 μm.

[0062] As an embodiment of the present invention, the total thickness of the mold surface protection film is less than 300 μm, more preferably 100-250 μm.

[0063] construction technology

[0064] The various layers of the mold surface protection film are compounded together by thermal compounding.

[0065] The pressure-sensitive adhesive self-adhesive layer does not require heat activation when applied to the mold surface and can be applied between -35°C.

[0066] According to needs, the mold surface protective film can cover part or all of the mold surface, and the protective film is pasted on the mold surface in the ...

Embodiment approach 1

[0071] Embodiment 1: Embodiment 1 of the present invention provides a large-scale curved surface mold surface protection film, which sequentially includes a grid cloth air-conducting layer, a pressure-sensitive adhesive self-adhesive layer and a polymer functional layer from the surface of the mold to the outside;

[0072] Wherein, the polymer functional layer does not adhere to the cured epoxy resin.

Embodiment approach 2

[0073] Embodiment 2: The surface protection film of a large curved surface mold described in Embodiment 1, the raw material for the preparation of the grid cloth air-conducting layer is one of glass fiber, polyester fiber or nylon fiber.

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Abstract

The invention provides a large hook face die surface protection film. The large hook face die surface protection film sequentially comprises a gridding cloth air guiding layer, a pressure-sensitive adhesive self-adhesion layer and a macromolecule functional layer from the position closely attached to the surface of a die to the exterior. The macromolecule functional layer does not adhere to cured epoxy resin.

Description

technical field [0001] The invention relates to a large-scale curved surface mold surface protection film, in particular to a complex curved surface mold surface protection film suitable for large-scale epoxy resin composite material products such as wind power blades. The invention also relates to the seam sealing technology of the mold surface protection film. technical background [0002] Molds, including single-sided hard molds and closed double-sided hard molds, are often used to manufacture lightweight and high-rigid composite parts, such as wind turbine blades. The usual production process is to lay multi-layer fiber fabrics in the mold, introduce resin and other matrix materials into the mold through vacuum or other means to combine with fiber reinforcement materials, and cure in the mold to obtain fiber reinforced composite products. Large-scale fiber-reinforced composite products such as wind turbine blades are often used to form molds with complex surfaces up to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B25/10B32B25/08B32B25/04B32B27/06B32B7/12B32B27/12B32B27/08B32B37/15B32B17/02B32B27/02B32B27/34B32B27/36
CPCB32B5/02B32B5/028B32B7/12B32B25/04B32B25/08B32B25/10B32B27/06B32B27/08B32B27/12B32B27/32B32B37/15B32B2262/0261B32B2262/0276B32B2262/101B32B2307/554B32B2307/724
Inventor 蒋伯仙
Owner TECHSTORM MATERIAL TECH SHANGHAI CO LTD
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