JPS6423943A - Easily openable lid - Google Patents

Easily openable lid

Info

Publication number
JPS6423943A
JPS6423943A JP62173346A JP17334687A JPS6423943A JP S6423943 A JPS6423943 A JP S6423943A JP 62173346 A JP62173346 A JP 62173346A JP 17334687 A JP17334687 A JP 17334687A JP S6423943 A JPS6423943 A JP S6423943A
Authority
JP
Japan
Prior art keywords
line
outer edge
heat seal
seal part
cut
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
JP62173346A
Other languages
Japanese (ja)
Other versions
JPH0637210B2 (en
Inventor
Hideo Kurashima
Michio Watanabe
Kazuma Kuze
Tamio Fujiwara
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP62173346A priority Critical patent/JPH0637210B2/en
Publication of JPS6423943A publication Critical patent/JPS6423943A/en
Publication of JPH0637210B2 publication Critical patent/JPH0637210B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Packages (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)

Abstract

PURPOSE:To easily open a lid, by forming a cut-in or thinned line from the tearing start point of the outer edge of the heat seal part of a container main body to the side edge of a tab so as to form an angle of 50-75 deg. with respect to the tangential line of the outer edge. CONSTITUTION:A lid 4 has a pickup tab 6 protruding to the outside and a cut-in line or weakened line 8 is formed to the area from the side edge present on the upstream side to the outer edge 5a of a heat seal part 5 in the clockwise direction of the tab 6. The angle theta formed by the cut-in line 8 and the tangential line 10 of the outer edge 5a at the tearing start point 9 being the intersecting point 9 with the outer edge 5a of the heat seal part 5 is set to 50-75 deg.. Further, a score part 11 is formed to the upper surface of the lid 4 along the inner edge 5b of the heat seal part 5 from the vicinity part 15 of the radius 13 passing the base part 12a of a side edge 12 to a position 16 slightly exceeding the extension line 8a of the cut-in line 8. When the angle theta is smaller than 50 deg., an initial tearing line is easy to advance along the outer edge 5a of the heat seal part 5 and opening becomes difficult. When the angle theta is larger than 75 deg., the force required in initial tearing becomes large.
JP62173346A 1987-07-10 1987-07-10 Easy opening lid Expired - Fee Related JPH0637210B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62173346A JPH0637210B2 (en) 1987-07-10 1987-07-10 Easy opening lid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62173346A JPH0637210B2 (en) 1987-07-10 1987-07-10 Easy opening lid

Publications (2)

Publication Number Publication Date
JPS6423943A true JPS6423943A (en) 1989-01-26
JPH0637210B2 JPH0637210B2 (en) 1994-05-18

Family

ID=15958713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62173346A Expired - Fee Related JPH0637210B2 (en) 1987-07-10 1987-07-10 Easy opening lid

Country Status (1)

Country Link
JP (1) JPH0637210B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016033062A (en) * 2015-11-30 2016-03-10 大日本印刷株式会社 Lid and container using the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4425029Y1 (en) * 1966-02-01 1969-10-21
JPS54139675U (en) * 1978-03-22 1979-09-28

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4425029Y1 (en) * 1966-02-01 1969-10-21
JPS54139675U (en) * 1978-03-22 1979-09-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016033062A (en) * 2015-11-30 2016-03-10 大日本印刷株式会社 Lid and container using the same

Also Published As

Publication number Publication date
JPH0637210B2 (en) 1994-05-18

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees