JPS5676439A - Production of stock material for injection-molded article having surface smoothness by using waste tire rubber powder - Google Patents

Production of stock material for injection-molded article having surface smoothness by using waste tire rubber powder

Info

Publication number
JPS5676439A
JPS5676439A JP15204779A JP15204779A JPS5676439A JP S5676439 A JPS5676439 A JP S5676439A JP 15204779 A JP15204779 A JP 15204779A JP 15204779 A JP15204779 A JP 15204779A JP S5676439 A JPS5676439 A JP S5676439A
Authority
JP
Japan
Prior art keywords
rubber powder
kneaded
stock material
mixt
waste tire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15204779A
Other languages
Japanese (ja)
Inventor
Hiroshi Motokawa
Teruo Hayashi
Kenji Ichikawa
Koji Matsuno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIWA KASEI KOGYO KK
KANSAI KANKIYOU KAIHATSU KK
KANSAI KANKYO KAIHATSU KK
Eiwa Chemical Industries Co Ltd
Original Assignee
EIWA KASEI KOGYO KK
KANSAI KANKIYOU KAIHATSU KK
KANSAI KANKYO KAIHATSU KK
Eiwa Chemical Industries Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EIWA KASEI KOGYO KK, KANSAI KANKIYOU KAIHATSU KK, KANSAI KANKYO KAIHATSU KK, Eiwa Chemical Industries Co Ltd filed Critical EIWA KASEI KOGYO KK
Priority to JP15204779A priority Critical patent/JPS5676439A/en
Publication of JPS5676439A publication Critical patent/JPS5676439A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the titled stock material which can form molded articles having surface smoothness by injection molding, by a method wherein a rubber powder of a waste tire is made amorphous by treating it with a desulfurizing agent, a specified amount of sulfur is uniformly kneaded with the resulting amorphous rubber powder, a resin having rubberlike elasticity is added to the kneaded mixt., and the resulting mixt. is kneaded at a temp. of not lower than the vulcanizing temperature.
CONSTITUTION: A waste tire is ground to obtain a vulcanized rubber powder which is then treated with a desulfurizing agent to make the rubber powder amorphous. 0.2W2pts.wt. of sulfur is uniformly kneaded with 100pts.wt. of the comorphous rubber powder. Further, 30W100pts.wt. of a thermoplastic resin havig rubberlike elasticity (e.g. an ethylene-vinyl acetate copolymer resin or an ethylene-ethyl acrylate copolymer resin) is added to the kneaded mixt. The resulting mixt. is kneaded with heating at a temp. of not lower than the vulcanizing temperature to carry out simultaneously mixing and vulcanization of the rubber, whereby the titled stock material can be obtd. The stock material can be molded into a molded article by a conventional injection molding.
EFFECT: The produced molded articles are superior to conventional products in that they do not have surface tackiness.
COPYRIGHT: (C)1981,JPO&Japio
JP15204779A 1979-11-26 1979-11-26 Production of stock material for injection-molded article having surface smoothness by using waste tire rubber powder Pending JPS5676439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15204779A JPS5676439A (en) 1979-11-26 1979-11-26 Production of stock material for injection-molded article having surface smoothness by using waste tire rubber powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15204779A JPS5676439A (en) 1979-11-26 1979-11-26 Production of stock material for injection-molded article having surface smoothness by using waste tire rubber powder

Publications (1)

Publication Number Publication Date
JPS5676439A true JPS5676439A (en) 1981-06-24

Family

ID=15531884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15204779A Pending JPS5676439A (en) 1979-11-26 1979-11-26 Production of stock material for injection-molded article having surface smoothness by using waste tire rubber powder

Country Status (1)

Country Link
JP (1) JPS5676439A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0785228A3 (en) * 1996-01-18 1997-12-29 Joaquin Lupo Humidified rubber powder obtained by recycling of scrap materials
US6207723B1 (en) 1998-01-26 2001-03-27 Kabushiki Kaisha Toyota Chuo Kenkyusho Rubber composition and method for producing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0785228A3 (en) * 1996-01-18 1997-12-29 Joaquin Lupo Humidified rubber powder obtained by recycling of scrap materials
US6207723B1 (en) 1998-01-26 2001-03-27 Kabushiki Kaisha Toyota Chuo Kenkyusho Rubber composition and method for producing the same
US6316508B1 (en) 1998-01-26 2001-11-13 Kabushiki Kaisha Toyota Chuo Kenkyusho Rubber composition and method for producing the same

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