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1. EP1627820 - LAMINATED STEEL SHEET

Office
European Patent Office
Application Number 04734402
Application Date 21.05.2004
Publication Number 1627820
Publication Date 22.02.2006
Publication Kind B1
IPC
B65D 17/28
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
DCONTAINERS 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
17Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
28at lines or points of weakness
B32B 15/08
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products essentially comprising metal
04comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
08of synthetic resin
CPC
B32B 1/02
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
1Layered products having a general shape other than plane
02Receptacles ; , i.e. rigid containers; , e.g. tanks
B32B 7/06
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
7Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
04Interconnection of layers
06permitting easy separation
B32B 15/08
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
04comprising metal as the main or only constituent of a layer, ; which is; next to another layer of ; the same or of; a ; different material
08of synthetic resin
B32B 15/09
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
04comprising metal as the main or only constituent of a layer, ; which is; next to another layer of ; the same or of; a ; different material
08of synthetic resin
09comprising polyesters
B32B 15/18
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
18comprising iron or steel
B32B 27/36
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products comprising ; a layer of; synthetic resin
36comprising polyesters
Applicants JFE STEEL CORP
Inventors KUBO HIROSHI
KOJIMA KATSUMI
IWASA HIROKI
Designated States
Title
(DE) SCHICHTSTAHLBLECH
(EN) LAMINATED STEEL SHEET
(FR) FEUILLE DE TOLE STRATIFIEE
Abstract
(EN) The invention provides an easy open end having a structure of a polyester resin film having about 5 minutes or shorter half crystallization time and about 0.04 or smaller plane orientation coefficient at thicknesses from about 10 to about 30 µm on at least one side of a steel sheet, wherein the easy open end is provided with a tear-off groove in a cross sectional shape with curvatures from about 0.1 to about 1 mm; and a laminated steel sheet for use in the easy open end. With the structure, the easy open end satisfies both the openeability and the elimination of repair-lacquering even with a thin score residual thickness.
(FR) Cette invention se rapporte à une partie d'extrémité facile à ouvrir, qui comprend une feuille de tôle, sur au moins l'un des côtés de laquelle est formé un film de revêtement d'environ 10 à 30 $g(m)m d'épaisseur en résine de polyester ayant une durée de cristallisation à 50 % d'environ 5 minutes au maximum et un coefficient d'orientation planaire d'environ 0,04 au maximum et qui comporte une rainure de découpage présentant un rayon de courbure d'environ 0,1 à 1 mm ; ainsi qu'à une feuille de tôle stratifiée destinée à être utilisée dans cette partie d'extrémité facile à ouvrir. Cette partie d'extrémité facile à ouvrir est pratique à ouvrir et en même temps ne nécessite pas de réparation, même lorsque l'épaisseur d'incision résiduelle est faible.
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US2006228524This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.