MY114865A - Improved injection molding method for producing shaped, hollow resin articles, and mold for use therein - Google Patents

Improved injection molding method for producing shaped, hollow resin articles, and mold for use therein

Info

Publication number
MY114865A
MY114865A MYPI9500326A MY114865A MY 114865 A MY114865 A MY 114865A MY PI9500326 A MYPI9500326 A MY PI9500326A MY 114865 A MY114865 A MY 114865A
Authority
MY
Malaysia
Prior art keywords
hollow
shaped
molten resin
mold
resin mass
Prior art date
Application number
Inventor
Shoji Imai
Maki Horikoshi
Original Assignee
Asahi Chemical Ind
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 Chemical Ind filed Critical Asahi Chemical Ind
Priority to MYPI9500326 priority Critical patent/MY114865A/en
Publication of MY114865A publication Critical patent/MY114865A/en

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  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

DISCLOSED IS AN INJECTION MOLDING METHOD FOR PRODUCING A SHAPED, HOLLOW RESIN ARTICLE BY INTRODUCING A PRESSURIZED FLUID INTO A MOLTEN RESIN MASS INJECTED INTO A MOLD CAVITY, WHEREIN, DURING THE INTRODUCTION OF THE PRESSURIZED FLUID, THE TEMPERATURE OF AT LEAST ONE PRESELECTED PORTION OF A BACK SURFACE OF THE MOLTEN RESIN MASS IS MAINTAINED AT A LEVEL WHICH IS AT LEAST 5 °C HIGHER THAN THE TEMPERATURE OF A FRONT SURFACE OF THE MOLTEN RESIN MASS, CAUSING THE FLUID TO FLOW INTO THE MOLTEN RESIN MASS ALONG A LINE SUBSTANTIALLY CORRESPONDING TO A LINE ALONG WHICH THE AT LEAST ONE PRESELECTED PORTION OF THE BACK SURFACE EXTENDS, SO THAT A SHAPED, HOLLOW RESIN ARTICLE PRODUCED HAS A HOLLOW IN A POSITION CORRESPONDING TO THE AT LEAST ONE PRESELECTED PORTION OF THE BACK SURFACE. BY THE METHOD OF THE PRESENT INVENTION, THE FLOW OF THE PRESSURIZED FLUID INTRODUCED CAN BE SURELY LED TO AN INTENDED PORTION IN THE MOLTEN RESIN MASS, SO THAT THE LOCATION OF A HOLLOW IN THE MOLTEN RESIN MASS CAN BE SURELY CONTROLLED. ACCORDING TO ONE PREFERRED EMBODIMENT OF THE PRESENT INVENTION, A SHAPED, HOLLOW RESIN ARTICLE PRODUCED HAS A THICKNESS OF AT LEAST 1.0 MM AS MEASURED AT A PORTION HAVING A HOLLOW THEREIN. ACCORDING TO ANOTHER PREFERRED EMBODIMENT OF THE PRESENT INVENTION, A SHAPED, HOLLOW RESIN ARTICLE PRODUCED HAS A THICKNESS OF 3.5 MM OR LESS AS MEASURED AT A PORTION HAVING A HOLLOW THEREIN. IN EACH OF THE PREFERRED EMBODIMENTS, A SHAPED, HOLLOW RESIN ARTICLE HAVING A FRONT SURFACE THEREOF WHICH IS IN A UNIFORM, SMOOTH SURFACE CONDITION CAN BE OBTAINED. ALSO DISCLOSED IS A MOLD FOR USE IN THE METHOD.
MYPI9500326 1995-02-11 1995-02-11 Improved injection molding method for producing shaped, hollow resin articles, and mold for use therein MY114865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MYPI9500326 MY114865A (en) 1995-02-11 1995-02-11 Improved injection molding method for producing shaped, hollow resin articles, and mold for use therein

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MYPI9500326 MY114865A (en) 1995-02-11 1995-02-11 Improved injection molding method for producing shaped, hollow resin articles, and mold for use therein

Publications (1)

Publication Number Publication Date
MY114865A true MY114865A (en) 2003-02-28

Family

ID=47221671

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI9500326 MY114865A (en) 1995-02-11 1995-02-11 Improved injection molding method for producing shaped, hollow resin articles, and mold for use therein

Country Status (1)

Country Link
MY (1) MY114865A (en)

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