Title:
【発明の名称】塗装ポリプロピレン系樹脂製バンパーの再生方法
Document Type and Number:
Japanese Patent JP3128300
Kind Code:
B2
Abstract:
PURPOSE:To regenerate a coated bumper with high removing ratio of coating film by pulverizing the coated polypropylene resin bumper to specific size, allowing the pulverized material to stand after stirring in a surfactant solution and recovering the floating pulverized material to which small quantity of the coating film sticks. CONSTITUTION:The coated polypropylene resin bumper is pulverized to the size of 0.1-10mm and the pulverized material stirred in the surfactant solution is allowed to stand and the floating part of the pulverized material is recovered and dried. In this way, the pulverized bumper recovered amounts to >=60% in removing ratio of the coating material (coating film) and average diameter of the residual coating film is so fine as about <=3000mum. And the polypropylene resin regenerated in this way is made again into a bumper by melt extrusion. And deterioration in surface property of the regenerated bumper is drastically small and deterioration in mechanical property such as impact resistance and mechanical strength is also small.
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Inventors:
Katsuyuki Yokomizo
Yuji Fujita
Yuji Fujita
Application Number:
JP31180091A
Publication Date:
January 29, 2001
Filing Date:
October 30, 1991
Export Citation:
Assignee:
Tonen Chemical Co., Ltd.
International Classes:
B03D1/00; B03D1/02; B29B17/02; B29B17/04; B29K23/00; (IPC1-7): B03D1/02; B29B17/02
Domestic Patent References:
| JP50123566A |
Attorney, Agent or Firm:
Takaishi Tachibana