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Oblique gridding hot-molten felt

A hot-melt felt and grid technology, applied in the field of hot-melt felt, can solve the problems of hot-melt felt that is easy to break, increase packaging costs, and break into small pieces, so as to reduce production costs, reduce transportation costs, and resist bending The effect of empowerment

Pending Publication Date: 2019-06-14
江苏乐福德新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The glass fiber itself is easy to be brittle. The processed kits will inevitably be folded during the handling, transportation and blade construction in the factory. Or the weft yarn is broken, causing the large sheet to break into small pieces, which troubles the production of the blade. In order to avoid folding, the core material manufacturer often needs a large carton to pack the kit, which not only increases the packaging cost, but also greatly increases the difficulty of loading , there is a problem that the hot melt felt is easy to break

Method used

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  • Oblique gridding hot-molten felt
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  • Oblique gridding hot-molten felt

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1: a kind of sandwich structure core material, such as figure 1 As shown, including plate 3, plate 3 is evenly cut into a plurality of small squares along the length direction and width direction, the bottom of plate 3 is adhered with oblique grid hot-melt felt by hot-melt adhesive, and the oblique grid hot-melt felt is not cutting.

[0027] Such as figure 2 As shown, the diagonal grid hot-melt felt includes two layers of parallel warp yarns 1, and a layer of weft yarn 2 is laid between the two layers of warp yarns 1. The horizontal angle between the weft yarn 2 and the warp yarn 1 is 60°.

[0028] The length direction of the warp yarn 1 is the length direction of the mesh cloth, which ensures the normal production of the diagonal mesh cloth and will not be stretched and deformed during winding. If the diagonal mesh cloth is folded along the vertical direction of the warp yarn 1, the bending range of the two layers of weft yarn 2 inclined to the warp yarn ...

Embodiment 2

[0033] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the number of layers of weft yarns is different. Such as image 3 As shown, the oblique mesh hot-melt felt includes two layers of parallel warp yarns 1, and two layers of weft yarns 2 are laid in the middle of the two layers of warp yarns 1. The angle between one layer of weft yarns 2 and warp yarns 1 is 79°, and the other layer of weft yarns 2 and The included angle of warp yarn 1 is -79°, and the included angle in this implementation is set to 79°, but in actual production, it is not limited to 79°, as long as it is inclined weft yarn 2, it all belongs to the conventional variation of this technical solution.

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Abstract

The invention relates to hot-molten felt having an effect of being not prone to being broken, and discloses oblique gridding hot-molten felt. The oblique gridding hot-molten felt comprises two layersof parallel warps; and two layers of wefts are laid between the two layers of warps, the included angle between one of the two layers of wefts and the warps is 45-89 degrees, and the included angle between the other layer of wefts and the warps is minus 45-minus 89 degrees. The anti-bending capacity of a gridding cloth is enhanced by cooperating with oblique stacking of the warps and the two layers of wefts.

Description

technical field [0001] The present invention relates to a hot-melt felt for sandwich core material, more specifically, it relates to a diagonal mesh hot-melt felt. Background technique [0002] Hot-melt felt is a process material used in the molding process of sandwich structure composite materials. Because the blades of wind turbines are curved, the core board of the sandwich structure needs to be evenly cut into multiple small squares so that it can fit the curved surface of the mold. , the role of the hot-melt felt is to enable the entire board that has been cut into small squares to be laid into the mold, so as to improve the efficiency of blade construction. [0003] The currently used hot-melt felt is a flat-woven glass fiber mesh with a warp direction of 0° and a weft direction of 90°, which is then coated with hot-melt adhesive or thermoplastic resin. The glass fiber itself is easy to be brittle. The processed kits will inevitably be folded during the handling, tran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/02B32B17/06B32B7/12B32B33/00
Inventor 王云飞
Owner 江苏乐福德新材料技术有限公司
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