WO1991001555A1 - Process for the production of a magnetic-tape cassette casing - Google Patents

Process for the production of a magnetic-tape cassette casing Download PDF

Info

Publication number
WO1991001555A1
WO1991001555A1 PCT/EP1990/001147 EP9001147W WO9101555A1 WO 1991001555 A1 WO1991001555 A1 WO 1991001555A1 EP 9001147 W EP9001147 W EP 9001147W WO 9101555 A1 WO9101555 A1 WO 9101555A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
magnetic
production
tape cassette
cassette casing
Prior art date
Application number
PCT/EP1990/001147
Other languages
German (de)
French (fr)
Inventor
Kurt Schmidts
Original Assignee
Basf Aktiengesellschaft
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 Basf Aktiengesellschaft filed Critical Basf Aktiengesellschaft
Publication of WO1991001555A1 publication Critical patent/WO1991001555A1/en

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
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/04—Magazines; Cassettes for webs or filaments
    • G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
    • G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores
    • G11B23/08707—Details
    • G11B23/08785—Envelopes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/113—Apparatus or processes specially adapted for the manufacture of magazines or cassettes, e.g. initial loading into container
    • 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)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The casings or casing halves of tape cassettes are manufactured by the injection moulding of a thermoplastic material. The tape guide elements formed on the casing can be deformed by stresses produced by the injection-moulding procedure. The moulding of the casing or casing halves is therefore carried out in a zone of the casing mould remote from the tape guide elements.
PCT/EP1990/001147 1989-07-19 1990-07-12 Process for the production of a magnetic-tape cassette casing WO1991001555A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893923898 DE3923898A1 (en) 1989-07-19 1989-07-19 METHOD FOR PRODUCING A HOUSING A MAGNETIC TAPE CASSETTE
DEP3923898.9 1989-07-19

Publications (1)

Publication Number Publication Date
WO1991001555A1 true WO1991001555A1 (en) 1991-02-07

Family

ID=6385391

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1990/001147 WO1991001555A1 (en) 1989-07-19 1990-07-12 Process for the production of a magnetic-tape cassette casing

Country Status (3)

Country Link
DE (1) DE3923898A1 (en)
PT (1) PT94682A (en)
WO (1) WO1991001555A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175347A2 (en) * 1984-09-17 1986-03-26 Sony Corporation A tape cassette

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175347A2 (en) * 1984-09-17 1986-03-26 Sony Corporation A tape cassette

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan, Band 12, Nr 23, P658, Zusammenfassung von JP 62-177777, publ 1987-08-04 *

Also Published As

Publication number Publication date
PT94682A (en) 1992-01-31
DE3923898A1 (en) 1991-01-24

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