GB1299443A - Improvements relating to the sealing of thin walled containers - Google Patents

Improvements relating to the sealing of thin walled containers

Info

Publication number
GB1299443A
GB1299443A GB2287669A GB2287669A GB1299443A GB 1299443 A GB1299443 A GB 1299443A GB 2287669 A GB2287669 A GB 2287669A GB 2287669 A GB2287669 A GB 2287669A GB 1299443 A GB1299443 A GB 1299443A
Authority
GB
United Kingdom
Prior art keywords
flange
tray
sheet
containers
die
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.)
Expired
Application number
GB2287669A
Inventor
Thomas Norman Gaunt
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.)
Plastona John Waddington Ltd
Original Assignee
Plastona John Waddington 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 Plastona John Waddington Ltd filed Critical Plastona John Waddington Ltd
Priority to GB2287669A priority Critical patent/GB1299443A/en
Publication of GB1299443A publication Critical patent/GB1299443A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container

Abstract

1299443 Closing containers; containers; trays PLASTONA (JOHN WADDINGTON) Ltd 23 March 1970 [5 May 1969] 22876/69 Headings B8C B8D and B8P A lid of sheet material (not shown) is sealed to an outwardly-directed flange 22 of a polystyrene tray 10, which is provided with an inwardly-directed shoulder 18 spaced beneath the flange, whilst supporting the underside of the flange. The shoulder may extend around the whole periphery of the tray or along two opposite sides of the tray. The lidding sheet may be of polystyrene-coated aluminium foil, cellulose film, or paper sealed to the flange by a heated die whilst at least part of the flange is supported on its underside by means for moving the tray past the die, such as a conveyer tracks or chains. The support may be a split support die, which is opened and closed for reception of the tray automatically by the cams or followers actuated by the motion of means moving the tray past the heated die. Alternatively, the lidding sheet carries a heat-activatable styrene adhesive, said adhesive preferably being activated prior to the sheet being applied to the flange, and the sheet is pressed on to the flange by a soft rubber roller. The tray is reinforced by wall ribs 16. The arrangement of locating the flange above the shoulder permits the overall dimensions of the container to be lessened and hence save space necessary for storing stacks of the containers.
GB2287669A 1969-05-05 1969-05-05 Improvements relating to the sealing of thin walled containers Expired GB1299443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2287669A GB1299443A (en) 1969-05-05 1969-05-05 Improvements relating to the sealing of thin walled containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2287669A GB1299443A (en) 1969-05-05 1969-05-05 Improvements relating to the sealing of thin walled containers

Publications (1)

Publication Number Publication Date
GB1299443A true GB1299443A (en) 1972-12-13

Family

ID=10186465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2287669A Expired GB1299443A (en) 1969-05-05 1969-05-05 Improvements relating to the sealing of thin walled containers

Country Status (1)

Country Link
GB (1) GB1299443A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5076436A (en) * 1982-11-15 1991-12-31 W. R. Grace & Co.-Conn. Vacuum packaging

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5076436A (en) * 1982-11-15 1991-12-31 W. R. Grace & Co.-Conn. Vacuum packaging

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee