FR2363385A1 - Tear line prodn. for metal cans - has tapered edge steel wheel rotated and pressed against sheet under constant pressure - Google Patents

Tear line prodn. for metal cans - has tapered edge steel wheel rotated and pressed against sheet under constant pressure

Info

Publication number
FR2363385A1
FR2363385A1 FR7627617A FR7627617A FR2363385A1 FR 2363385 A1 FR2363385 A1 FR 2363385A1 FR 7627617 A FR7627617 A FR 7627617A FR 7627617 A FR7627617 A FR 7627617A FR 2363385 A1 FR2363385 A1 FR 2363385A1
Authority
FR
France
Prior art keywords
prodn
machine
pressed against
constant pressure
tear line
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.)
Withdrawn
Application number
FR7627617A
Other languages
French (fr)
Inventor
Raymond Lecomte
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.)
Rio Tinto France SAS
Original Assignee
Aluminium Pechiney SA
Societe de Vente de lAluminium Pechiney SA
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 Aluminium Pechiney SA, Societe de Vente de lAluminium Pechiney SA filed Critical Aluminium Pechiney SA
Priority to FR7627617A priority Critical patent/FR2363385A1/en
Publication of FR2363385A1 publication Critical patent/FR2363385A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling tabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/404—Details of the lines of weakness

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Opening Bottles Or Cans (AREA)

Abstract

The machine for producing lines of weakness in the form of furrows impressed into metal sheets, particularly those intended for lids for conserve cams. A bedplate (2) is fixed to a machine table, a lid (1) being held onto the bedplate by a clamping plate (3) under spring action. A ravel wheel (6) turns freely about an axis (7) fixed to the tool holder (5) fixed to the spindle of the machine. The wheel, made from heat treated steel has a dia. of about 20mm and a tip thickness of about 0.15 mm and is rotated at about 5000 rpm. The advance of the machine spindle is controlled by a micrometer stop (10) the rate being about 0.05 mm per turn and the pressure exerted on the wheel is about 500 newtons.
FR7627617A 1976-09-07 1976-09-07 Tear line prodn. for metal cans - has tapered edge steel wheel rotated and pressed against sheet under constant pressure Withdrawn FR2363385A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7627617A FR2363385A1 (en) 1976-09-07 1976-09-07 Tear line prodn. for metal cans - has tapered edge steel wheel rotated and pressed against sheet under constant pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7627617A FR2363385A1 (en) 1976-09-07 1976-09-07 Tear line prodn. for metal cans - has tapered edge steel wheel rotated and pressed against sheet under constant pressure

Publications (1)

Publication Number Publication Date
FR2363385A1 true FR2363385A1 (en) 1978-03-31

Family

ID=9177667

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7627617A Withdrawn FR2363385A1 (en) 1976-09-07 1976-09-07 Tear line prodn. for metal cans - has tapered edge steel wheel rotated and pressed against sheet under constant pressure

Country Status (1)

Country Link
FR (1) FR2363385A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377788A1 (en) * 1989-01-12 1990-07-18 QUAKER.CHIARI & FORTI S.P.A. An easy-opening closure for the sheet metal lids of cans and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377788A1 (en) * 1989-01-12 1990-07-18 QUAKER.CHIARI & FORTI S.P.A. An easy-opening closure for the sheet metal lids of cans and the like

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Legal Events

Date Code Title Description
ST Notification of lapse