JPS578120A - Molding method of plastic lens - Google Patents

Molding method of plastic lens

Info

Publication number
JPS578120A
JPS578120A JP8212980A JP8212980A JPS578120A JP S578120 A JPS578120 A JP S578120A JP 8212980 A JP8212980 A JP 8212980A JP 8212980 A JP8212980 A JP 8212980A JP S578120 A JPS578120 A JP S578120A
Authority
JP
Japan
Prior art keywords
molds
recess
cavity
film
forming member
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
JP8212980A
Other languages
Japanese (ja)
Other versions
JPH0126860B2 (en
Inventor
Tadao Nakamura
Kenji Muranaka
Naonori Hayashi
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.)
AGC Inc
Original Assignee
Asahi Glass 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 Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP8212980A priority Critical patent/JPS578120A/en
Publication of JPS578120A publication Critical patent/JPS578120A/en
Publication of JPH0126860B2 publication Critical patent/JPH0126860B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/0048—Moulds for lenses
    • B29D11/00528—Consisting of two mould halves joined by an annular gasket
    • 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
    • B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00413—Production of simple or compound lenses made by moulding between two mould parts which are not in direct contact with one another, e.g. comprising a seal between or on the edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/76—Office equipment or accessories
    • B29L2031/7602—Maps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE:To readily remove a hardened molded object without any damage, by a method wherein a recess-forming member is placed in a peripheral part in the cavity formed by sealing the peripheral sides of two molds with a sealing film, in order to form a tool engaging part for the removal of the molds. CONSTITUTION:Two molds 11 and 12 are positioned at correct positions so as to face to each other. A sealing film 13 is wound around the sides of the two molds 11 and 12 in order to seal the gap between the molds. Then, the overlapped part of the ends of the film 13 is peeled off to form a port for injection into the cavity. After injection, through said injection port, a recess-forming member 15 is entered into the cavity, the sealing film is applied again to close the cavity, and hardening is carried out in a heating oven. To remove the hardened molded object, the film 13 is removed, the recess-forming member 15 is drawn out, a wedge is driven by using the recess formed thereby as a tool engaging part, and the molds 11 and 12 are removed.
JP8212980A 1980-06-19 1980-06-19 Molding method of plastic lens Granted JPS578120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8212980A JPS578120A (en) 1980-06-19 1980-06-19 Molding method of plastic lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8212980A JPS578120A (en) 1980-06-19 1980-06-19 Molding method of plastic lens

Publications (2)

Publication Number Publication Date
JPS578120A true JPS578120A (en) 1982-01-16
JPH0126860B2 JPH0126860B2 (en) 1989-05-25

Family

ID=13765799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8212980A Granted JPS578120A (en) 1980-06-19 1980-06-19 Molding method of plastic lens

Country Status (1)

Country Link
JP (1) JPS578120A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007512974A (en) * 2003-10-29 2007-05-24 エシロール　アテルナジオナール　カンパニー　ジェネラーレ　デ　オプティック Methods for molding optical lenses
GB2456565A (en) * 2008-01-18 2009-07-22 Gkn Aerospace Services Ltd Moulded article ejecting tool

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007512974A (en) * 2003-10-29 2007-05-24 エシロール　アテルナジオナール　カンパニー　ジェネラーレ　デ　オプティック Methods for molding optical lenses
JP4801590B2 (en) * 2003-10-29 2011-10-26 エシロール アテルナジオナール カンパニー ジェネラーレ デ オプティック Method for evaluating the self-sealing properties of a piece of sealing material
JP2011218812A (en) * 2003-10-29 2011-11-04 Essilor Internatl Co Generale & D'optique Method for introducing polymerizable composition into mold cavity
GB2456565A (en) * 2008-01-18 2009-07-22 Gkn Aerospace Services Ltd Moulded article ejecting tool
GB2456565B (en) * 2008-01-18 2010-07-14 Gkn Aerospace Services Ltd Ejector tool

Also Published As

Publication number Publication date
JPH0126860B2 (en) 1989-05-25

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