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Manufacturing method of heat product

A technology for thermoforming and products, which is applied in the field of manufacturing thermoformed products, and can solve problems such as the reduction of commodity value

Inactive Publication Date: 2011-11-02
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Through thermoforming and machining, the thermoplastic resin sheet then becomes a finished product, but when the surface of the thermoplastic resin is scratched during thermoforming and machining, its commercial value is significantly reduced

Method used

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  • Manufacturing method of heat product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] As the protective film made of a resin material, #9070 (thickness: 60 μm) produced by NOVACEL Ltd. was used. For the protective film, according to Method A in JIS K7210:1999, using a melt indexer (L207 produced by Takara Kogyo Co., Ltd.) under a load of 2.16 kg, measured at a cylinder temperature of 190° C. The amount of molten resin material flowed out in 10 minutes, and its value is shown in Table 1 in the form of MFI (g / 10 minutes).

[0019] Both sides of an acrylic resin plate having a thickness of 5 mm were laminated using the above-mentioned protective film made of a resin material to obtain an acrylic resin plate provided with a protective film. The acrylic resin plate provided with the protective film was heated to 200°C, and then a sample with a width of 25 mm was cut out from the resin plate at room temperature, and passed the 180° peel test method according to JIS K6854-2:1999, using an automatic The plotter measured the average peeling force (N) of this sam...

Embodiment 2

[0022] The same procedure as in Example 1 was carried out except that #9006 (thickness 79 μm) produced by NOVACEL Ltd. was used as the protective film made of a resin material. The results are shown in Table 1.

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Abstract

The present invention provides a method for manufacturing thermal forming product. The method includes thermal forming the thermoplastic resin plate laminated with protection film. The protection film is made of resin material. The resin material has a fondant mass velocity less than 1g / 10 minute at 190 DEG C under the load of 2.16kg, and the peeling strength of the protection film relative to the thermoplastic resin plate is not less than 04.N / 25mm after heated to 200 DEG C.

Description

technical field [0001] The present invention relates to a method for manufacturing a thermoformed article provided with a protective film, the method comprising thermoforming a thermoplastic resin sheet laminated with a protective film made of resin. Background technique [0002] Through thermoforming and machining, the thermoplastic resin sheet then becomes a finished product, but when the surface of the thermoplastic resin is scratched during thermoforming and machining, its commercial value is significantly reduced. Therefore, it is known to subject the thermoplastic resin sheet to secondary processing without peeling off the protective film after lamination with the protective film, or when the manufactured or obtained thermoplastic resin sheet has been previously laminated with the protective film ( See, for example, JP-1-36776-B, JP-2-88218-A, JP-2-88219-A and JP-11-240069-A). As such a protective film, a film made of a resin such as polyolefin or polyester resin is u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B29C51/14
Inventor 小仓公司
Owner SUMITOMO CHEM CO LTD
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