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Method for producing masking material

A manufacturing method and sheet technology, applied to household components, applications, household appliances, etc., can solve problems such as difficulty in reusing

Inactive Publication Date: 2005-12-21
NAGOYA OIL CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the above-mentioned masking material, the problem is that the residual stress exists in the molded product due to the tensile stress caused by the decompression molding and / or press molding. For example, the masking material shrinks due to the heat treatment in the painting, so make it difficult to use again

Method used

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  • Method for producing masking material
  • Method for producing masking material
  • Method for producing masking material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] exist figure 1 Among them, 3 is the vehicle body of the automobile. When painting, the shielding material 1 of this embodiment is attached to the air inlet 6 of the lower side skirt (skirt) portion 5 of the front bumper 4 . Inside the air inlet 6 of the skirt 5, vertical and horizontal reinforcing brackets 6A, 6B and a pair of left and right pillars 6C are provided. The fitting grooves 2A, 2B and the fitting groove 2C have a flange 2D formed on the front peripheral edge. Furthermore, the vertical and horizontal fitting grooves 2A, 2B, and 2C for fitting the reinforcing brackets 6A, 6B and the pillars 6C can also function as ribs for reinforcing the shielding material 1 . At the intersection of the horizontal (long direction) fitting groove 2B and the vertical (short direction) fitting groove 2A of the masking material 1, the horizontal fitting groove 2B is formed higher than the longitudinal fitting groove 2A in order to The lateral rigidity of the masking material 1 ...

Embodiment 2

[0057] As the shielding material 11 for shielding the air intake port 6 of the automobile front bumper 4 of the above-mentioned embodiment 1, a figure 2 The masking material 11 shown.

[0058]In this masking material 11, fitting grooves 2A, 2B, and 2C for fitting the reinforcement brackets 6A, 6B and the pillars 6C are formed, convex curved surface portions 7, 7 are formed on the front side, and a front peripheral edge is formed on the front surface. With flange 2D. Rigidity in the longitudinal direction of the masking member 11 is enhanced by the convexly curved shape of the convexly curved surface portions 7 , 7 . By increasing the rigidity in the longitudinal direction, it is possible to prevent swelling at both ends of the masking material 11 due to warping of the masking material 11 caused by the curing of the paint adhering to the masking material 11 during painting.

[0059] The convex surfaces 7, 7 are not fitted into the reinforcing brackets 6A, 6B, but the shieldi...

Embodiment 3

[0064] Furthermore, as the shielding material 21 for shielding the air intake port 6 of the automobile front bumper 4 of the above-mentioned embodiment 1, a image 3 The masking material 21 shown.

[0065] In this masking material 21, fitting grooves 2A, 2B, 2C for fitting reinforcing brackets 6A, 6B and pillars 6C are formed, longitudinal ribs 8A and transverse ribs 8B are formed, and flanges 2D are formed on the front peripheral edge. The fitting grooves 2A, 2B, and 2C also function as ribs, and the rigidity of the shielding material 21 in the vertical and horizontal directions is enhanced by the vertical and horizontal ribs 8A and 8B.

[0066] The rib has rigidity in the direction along the rib, but in the direction perpendicular to the rib, the rib is easily bent and the rigidity is lowered. However, if one rib is formed higher than the other at the crossing point between ribs, the rigidity along the direction in which the higher rib is formed can be increased.

[0067] ...

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Abstract

An object of the present invention is to provide a masking material that does not shrink or deform even when heated during use. It stretches a thermoplastic resin sheet to produce a masking material base material, and then heats the masking material base material at a temperature above the softening point of the thermoplastic resin sheet to produce a size suitable for the masked part. Shaped masking material. The provided masking material has reduced residual stress remaining in the molded product during the above-mentioned heat treatment, and is free from shrinkage and deformation even by subsequent heating.

Description

technical field [0001] The present invention relates to a masking material used in order to protect parts not to be painted (shielded parts) from the viewpoint of painting, for example, when painting an automobile body or a bumper. Background technique [0002] In the past, as such a masking material, a molded product was provided by combining engineering plastics such as polysulfone, polyphenylene ether, polyphenylene sulfide, and methylpentene copolymer mixed with fillers such as calcium carbonate and the like. Thermoplastic resin sheets such as polymer alloys of thermoplastic resins such as polyamides are produced by vacuum molding and / or pressure molding (see Japanese Patent No. 3154547). [0003] In the above-mentioned masking material, the problem is that the residual stress exists in the molded product due to the tensile stress caused by the decompression molding and / or press molding. For example, the masking material shrinks due to the heat treatment in the painting,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C51/10B05B15/04B29C51/08B29C51/42B29C61/02B29C71/02B29K23/00B29K25/00B29K105/04B29K105/16
CPCB29C51/082B29C51/10B29C61/02B29C71/02B29C2071/022B29C2791/001B29C2791/006B29K2025/00B29K2055/02B29K2069/00B29K2077/00B29K2079/08B29K2105/16B29K2995/0039B29K2995/004B29K2995/0096B29L2031/3044B05B12/20
Inventor 小川正则伊藤邦矩
Owner NAGOYA OIL CHEM CO LTD