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JPS578131A - Injection-molded article of rubber-reinforced polystyrene resin excellent in appearance - Google Patents

Injection-molded article of rubber-reinforced polystyrene resin excellent in appearance

Info

Publication number
JPS578131A
JPS578131A JP8210780A JP8210780A JPS578131A JP S578131 A JPS578131 A JP S578131A JP 8210780 A JP8210780 A JP 8210780A JP 8210780 A JP8210780 A JP 8210780A JP S578131 A JPS578131 A JP S578131A
Authority
JP
Japan
Prior art keywords
rubber
molded article
reinforced
mold
appearance
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.)
Granted
Application number
JP8210780A
Other languages
Japanese (ja)
Other versions
JPS6258287B2 (en
Inventor
Akihiro Wada
Kichiya Tazaki
Tamotsu Tawara
Keiji Suzuki
Yukihisa Mizutani
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.)
Asahi Dow Ltd
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Dow Ltd
Asahi Chemical Industry 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 Asahi Dow Ltd, Asahi Chemical Industry Co Ltd filed Critical Asahi Dow Ltd
Priority to JP8210780A priority Critical patent/JPS578131A/en
Publication of JPS578131A publication Critical patent/JPS578131A/en
Publication of JPS6258287B2 publication Critical patent/JPS6258287B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To obtain the titled article which retains the inherent gloss of a thermoplastic resin at its surface and is devoid of defects of appearance such as flow marks and sliver streaks, by a method wherein a layer with little deformation of rubber is formed in the proximity of the surface of a reinforced polystyrene (PS) molded article.
CONSTITUTION: In the condition where an inductor 3 for high-grequency induction heating is placed between a fixed-side metallic mold 1 and a movable-side metallic mold 2, a high-frequency wave is generated to rapidly raise the temperature of mold surfaces (points A and B) only. Then, the inductor 3 is removed, the molds are reclosed and rubber-reinforced PS is injection molded. The adhesion between the resin and the molds is sufficient at the time of molding, while at the time of mold releasing, the mold surfaces are easily cooled to below the thermal deformation temperature of the resin, and a layer (a skin layer) having a thickness of 1W100μ and involving little deformation of rubber is formed in the proximity of the surface of the molded article. When a rubber-reinforced PS containing not less than 4wt% of rubber component is injection molded, a molded article having a surface gloss Gs (60 degrees) % (ASTM D 523) of not less than 80% can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP8210780A 1980-06-19 1980-06-19 Injection-molded article of rubber-reinforced polystyrene resin excellent in appearance Granted JPS578131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8210780A JPS578131A (en) 1980-06-19 1980-06-19 Injection-molded article of rubber-reinforced polystyrene resin excellent in appearance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8210780A JPS578131A (en) 1980-06-19 1980-06-19 Injection-molded article of rubber-reinforced polystyrene resin excellent in appearance

Publications (2)

Publication Number Publication Date
JPS578131A true JPS578131A (en) 1982-01-16
JPS6258287B2 JPS6258287B2 (en) 1987-12-04

Family

ID=13765177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8210780A Granted JPS578131A (en) 1980-06-19 1980-06-19 Injection-molded article of rubber-reinforced polystyrene resin excellent in appearance

Country Status (1)

Country Link
JP (1) JPS578131A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6297806A (en) * 1985-10-24 1987-05-07 Nippon Steel Corp Method for manufacturing styrenic resin molded product containing metal fibers
US7105354B1 (en) 1998-06-12 2006-09-12 Asahi Kasei Kabushiki Kaisha Analyzer
US7625760B2 (en) 1999-08-11 2009-12-01 Asahi Kasei Kabushiki Kaisha Analyzing cartridge and liquid feed control device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045039A (en) * 1973-08-29 1975-04-22
JPS5286444A (en) * 1976-01-14 1977-07-18 Mitsui Toatsu Chem Inc Rubber-modified styrene resin compositions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045039A (en) * 1973-08-29 1975-04-22
JPS5286444A (en) * 1976-01-14 1977-07-18 Mitsui Toatsu Chem Inc Rubber-modified styrene resin compositions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6297806A (en) * 1985-10-24 1987-05-07 Nippon Steel Corp Method for manufacturing styrenic resin molded product containing metal fibers
US7105354B1 (en) 1998-06-12 2006-09-12 Asahi Kasei Kabushiki Kaisha Analyzer
US7625760B2 (en) 1999-08-11 2009-12-01 Asahi Kasei Kabushiki Kaisha Analyzing cartridge and liquid feed control device

Also Published As

Publication number Publication date
JPS6258287B2 (en) 1987-12-04

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