JPS5569433A - Molding of annual ring pattern on synthetic resin injection molded product - Google Patents

Molding of annual ring pattern on synthetic resin injection molded product

Info

Publication number
JPS5569433A
JPS5569433A JP14393378A JP14393378A JPS5569433A JP S5569433 A JPS5569433 A JP S5569433A JP 14393378 A JP14393378 A JP 14393378A JP 14393378 A JP14393378 A JP 14393378A JP S5569433 A JPS5569433 A JP S5569433A
Authority
JP
Japan
Prior art keywords
molding
molded product
pin gate
ring pattern
annual ring
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
JP14393378A
Other languages
Japanese (ja)
Inventor
Masao Akutsu
Kazuyoshi Sekine
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.)
Yoshino Kogyosho Co Ltd
Original Assignee
Yoshino Kogyosho 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 Yoshino Kogyosho Co Ltd filed Critical Yoshino Kogyosho Co Ltd
Priority to JP14393378A priority Critical patent/JPS5569433A/en
Publication of JPS5569433A publication Critical patent/JPS5569433A/en
Pending legal-status Critical Current

Links

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To accomplish the intended molding with only one injecting action by one injection machine through sequential injection of melted resin varying the molecular weight and the amount of dispersant and the like at random employing a pin gate type injection molding machine.
CONSTITUTION: A melted resin is injected into a mold cavity 10 via a pin gate from a nozzle 2 varying the molecular weight and the amount and the nature of the dispersant and the like at random. The melted resin material thus injected is initially solidified in contact with the molding surface close to the pin gate of the mold cavity 10 and then, successively done along the molding surface flowing away from the pin gate. As a result, a molded product having an annual ring pattern M can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP14393378A 1978-11-21 1978-11-21 Molding of annual ring pattern on synthetic resin injection molded product Pending JPS5569433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14393378A JPS5569433A (en) 1978-11-21 1978-11-21 Molding of annual ring pattern on synthetic resin injection molded product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14393378A JPS5569433A (en) 1978-11-21 1978-11-21 Molding of annual ring pattern on synthetic resin injection molded product

Publications (1)

Publication Number Publication Date
JPS5569433A true JPS5569433A (en) 1980-05-26

Family

ID=15350444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14393378A Pending JPS5569433A (en) 1978-11-21 1978-11-21 Molding of annual ring pattern on synthetic resin injection molded product

Country Status (1)

Country Link
JP (1) JPS5569433A (en)

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