JPS5633926A - Method of eliminating gate mark on bottom wall of biaxially stretched transparent bottle made of saturated polyester - Google Patents

Method of eliminating gate mark on bottom wall of biaxially stretched transparent bottle made of saturated polyester

Info

Publication number
JPS5633926A
JPS5633926A JP10879079A JP10879079A JPS5633926A JP S5633926 A JPS5633926 A JP S5633926A JP 10879079 A JP10879079 A JP 10879079A JP 10879079 A JP10879079 A JP 10879079A JP S5633926 A JPS5633926 A JP S5633926A
Authority
JP
Japan
Prior art keywords
gate mark
bottom wall
pattern
bottle
biaxially stretched
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
JP10879079A
Other languages
Japanese (ja)
Inventor
Yoshiaki Hayashi
Masahito Kondo
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 JP10879079A priority Critical patent/JPS5633926A/en
Publication of JPS5633926A publication Critical patent/JPS5633926A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
    • B29C33/424—Moulding surfaces provided with means for marking or patterning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/52—Moulds having decorating or printing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • B29C2045/0027—Gate or gate mark locations

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE:To enhance the merchandizing value of a bottle with a devised pattern by forming a relief pattern on the outer surface of the bottom wall of a bottle including a gate mark with a projection or indentation on the inner surface of a cavity so that the edge line surrounding the gate mark becomes less visible. CONSTITUTION:A cold parison having a gate mark on the outer surface of the bottom is stretched and expanded in a blow molding metallic die in which a multiple relief pattern 5 is formed on a surface for forming the bottom wall of a bottle in a cavity of the metallic die. A pattern identical to the pattern 5 but reverse in the arrangement of the projection and indentation is formed on the outer surface of the bottle bottom wall 9 in such a manner that the edge line 4 surrounding the gate mark is made as a part of the pattern 5 or included in the pattern whereby the edge is less visible.
JP10879079A 1979-08-27 1979-08-27 Method of eliminating gate mark on bottom wall of biaxially stretched transparent bottle made of saturated polyester Pending JPS5633926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10879079A JPS5633926A (en) 1979-08-27 1979-08-27 Method of eliminating gate mark on bottom wall of biaxially stretched transparent bottle made of saturated polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10879079A JPS5633926A (en) 1979-08-27 1979-08-27 Method of eliminating gate mark on bottom wall of biaxially stretched transparent bottle made of saturated polyester

Publications (1)

Publication Number Publication Date
JPS5633926A true JPS5633926A (en) 1981-04-04

Family

ID=14493540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10879079A Pending JPS5633926A (en) 1979-08-27 1979-08-27 Method of eliminating gate mark on bottom wall of biaxially stretched transparent bottle made of saturated polyester

Country Status (1)

Country Link
JP (1) JPS5633926A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009050613A (en) * 2007-08-29 2009-03-12 Shinichi Higano Walking aid

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52859A (en) * 1975-06-16 1977-01-06 Owens Illinois Inc Container and method and device for producing same
JPS53149264A (en) * 1977-06-01 1978-12-26 Yoshino Kogyosho Co Ltd Apparatus for making polyester bottle
JPS54101561A (en) * 1978-01-26 1979-08-10 Souichi Nagahara Thickener

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52859A (en) * 1975-06-16 1977-01-06 Owens Illinois Inc Container and method and device for producing same
JPS53149264A (en) * 1977-06-01 1978-12-26 Yoshino Kogyosho Co Ltd Apparatus for making polyester bottle
JPS54101561A (en) * 1978-01-26 1979-08-10 Souichi Nagahara Thickener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009050613A (en) * 2007-08-29 2009-03-12 Shinichi Higano Walking aid

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