EP0140282A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Can-like container and method for manufacturing same
Assignee: Resonac Holdings Corp
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Filing: 1984-10-17
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Granted: —
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Expires: 2004-10-17
Abstract
Abstract A can-like container and a method for manufacturing such a container which provides a strong structure, tight gas barrier, and no effect upon the taste of food stored in the container. The body of the container is fabricated with a multi-layer sheet composed of a metal foil layer having a thickness of no more than 40 µm and a hot-melt resin layer formed on one or both sides of the metal foil layer. The margin portions of the multi-layer material of the container body in corners thereof are either folded into two tucks at each corner or formed into vertical wrinkles upon molding the container body. A cover is joined to the container body, which cover is also composed of a metal foil layer and at least hot-melt resin layer.
Inventors
- 👤 Otohiko Miyauchi
- 👤 Michihiro Ohkawachi
- 👤 Junji Yotsuyanagi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 11:25
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B31; B31B; B31B50/00; B31B50/26; B31B50/44; B29; B29C; B29C45/00; B29C45/14; B29C45/14778; B29C45/14811; B29D; B29D22/00; B29D22/003; B31F; B31F1/00; B31F1/0077; B32B1/00; B32B15/085; B32B15/20; B32B27/00; B32B27/32; B32B7/00; B32B7/04; B32B7/12; B65; B65D; B65D1/00; B65D1/22; B65D1/26; B65D1/28; B65D17/00; B65D17/28; B65D17/401; B65D17/4011; B29K; B29K2705/00; B31B2100/00; B31B2100/002; B31B2100/0024; B31B2110/00; B31B2110/10; B31B2110/30; B31B2110/35; B31B2120/00; B31B2120/70; B32B2307/00; B32B2307/30; B32B2307/31; B32B2439/00; B32B2439/40; B65D2517/00; B65D2517/0001; B65D2517/001; B65D2517/0016; B65D2517/0058; B65D2517/0059; B65D2517/0061; B65D2517/008; B65D2517/0085; B65D2517/0088; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2025
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
119 words
A can-like container comprising: a. container body, said container body being formed of a multi-layer sheet composed of at least a metal foil layer and a hot-malt resin layer formed on aL least one side of said metal foil layer; said metal foil layer having a thickness of no more than 40 µm, margin portions of said container body containing folds in side wall portions thereof; and a cover made of a multi-layer sheet composed of at least a metal foil layer and a hot-melt resin layer formed on one side of said metal foil layer, at least peripheral portions of said hot-melt resin layer of said cover being heat-sealed to said hot-melt resin layer of said container body.
Claim 2
Dependent Claim
119 words
A can-like container comprising: a. container body, said container body being formed of a multi-layer sheet composed of at least a metal foil layer and a hot-malt resin layer formed on aL least one side of said metal foil layer; said metal foil layer having a thickness of no more than 40 µm, margin portions of said container body containing folds in side wall portions thereof; and a cover made of a multi-layer sheet composed of at least a metal foil layer and a hot-melt resin layer formed on one side of said metal foil layer, at least peripheral portions of said hot-melt resin layer of said cover being heat-sealed to said hot-melt resin layer of said container body.
Claim 3
Dependent Claim
37 words
The can-like container of claim 1, wherein said container body is substantially rectangular in configuration, and said margin portions in each of four corners of said container body arc formed as two tucks folded towards one another.
Claim 4
Dependent Claim
39 words
The can-like container of claim 1, wherein said container body is substantially rectangular in configuration, and wherein said margin portions in each of said side wall portions including four corners of said container body are gathered into vertical wrinkles.
Claim 5
Dependent Claim
32 words
The can-like container of claim 1, wherein said container body is substantially rectangular in configuration, and wherein said margin portions in four corners of said container body are gathered into vertical wrinkles.
Claim 6
Dependent Claim
36 words
The can-like container of claim 1, wherein said container body is substantially cylindrical in configuration, and wherein said margin portions in each of said side wall portions of said container body are gathered into vertical wrinkles.
Claim 7
Dependent Claim
12 words
The can-like container of claim 1, wherein said-hot-melt resin is a polyolefin.
Claim 8
Dependent Claim
32 words
The can-like container of claim 1, wherein said cover comprises an aluminum foil layer having on one side a hot-melt resin layer of polyolefin and on the other side a plastic film.
Claim 9
Dependent Claim
29 words
The can-like container of any one of claims 1 through 7, further comprising a tray enclosing at least a lower portion of an outer surface of said container body.
Claim 10
Dependent Claim
27 words
The can-like container of claim 8, in which an inner surface of said tray is fixed to the outer surface of said container body by an adhesive.
Claim 11
Dependent Claim
25 words
The can-like container of claim 8, wherein an inner surface of said tray is fused to the outer surface of said container body by hot-melting.
Claim 12
Dependent Claim
21 words
The can-like container of claim 8, wherein said' tray are injection molded directly to the outer surface of said container body.
Claim 13
Dependent Claim
26 words
The can-like container of claim 8, wherein a clearance is formed between an inner surface of said tray and the outer surface of said container body.
Claim 14
Dependent Claim
25 words
The can-like container of claim 8, wherein said tray is formed of a material selected from the group consisting of plastics, paper and formed plastics.
Claim 15
Dependent Claim
24 words
The can-like container of claim 8, wherein said container body has flange-like shoulder portions, and wherein said cover is joined to said shouldered portions.
Claim 16
Dependent Claim
23 words
The can-like container of claim 8, wherein said tray comprises flange-like shouldered portions, and wherein said cover is joined to said shouldered portions.
Claim 17
Dependent Claim
27 words
The can-like container of claim 8, wherein said tray and said container each comprises flange-like shouldered portions, and wherein said cover is joined to said shouldered portions.
Claim 18
Dependent Claim
14 words
The can-like container of Claim 1, wherein said container body is substantially cylindrically shaped.
Claim 19
Dependent Claim
15 words
The can-like container of claim 1, wherein said container body has a substantially cylindrical shape.
Claim 20
Dependent Claim
35 words
The can-like container of claim 1, wherein said cover comprises a second resin layer formed on one side of said metal foil layer opposite said container body, said second resin layer comprising a handle portion.
Claim 21
Independent Claim
168 words
A method for forming a can-like container comprising the steps of: providing a blank sheet, said blank sheet comprising a metal foil layer having a thickness of no more than 40 µm, and a hot-melt resin layer formed on at least one side of said metal foil layer, cutting said sheet to provide a blank having dimensions established in accordance with desired dimensions of said container, placing said blank over one side of a female mold, said female mold having a hollow central portion having dimensions established in accordance with said desired dimensions of said container, said female mold having grooves in its side wall portions pressing a male mold against said blank and into said hollow portion of said female meld thereby to provide a container having wrinkles in side wall portions corresponding to side wall portions of said female mold; and attaching a cover to said container body, said cover comprising a metal foil layer having a hot-melt rcsin layer on at least one side thereof.
Claim 22
Independent Claim
168 words
A method for forming a can-like container comprising the steps of: providing a blank sheet, said blank sheet comprising a metal foil layer having a thickness of no more than 40 µm, and a hot-melt resin layer formed on at least one side of said metal foil layer, cutting said sheet to provide a blank having dimensions established in accordance with desired dimensions of said container, placing said blank over one side of a female mold, said female mold having a hollow central portion having dimensions established in accordance with said desired dimensions of said container, said female mold having grooves in its side wall portions pressing a male mold against said blank and into said hollow portion of said female meld thereby to provide a container having wrinkles in side wall portions corresponding to side wall portions of said female mold; and attaching a cover to said container body, said cover comprising a metal foil layer having a hot-melt rcsin layer on at least one side thereof.
Claim 23
Dependent Claim
27 words
The method of claim 20, wherein said female mold has four substantially straight sides and four corner portions for gathering said wrinkles at said four corner portions.
Claim 24
Dependent Claim
27 words
The method of claim 20, wherein said female mold has a substantially cylindrical hollow space for providing said side wall portions of said container with vertical wrinkles.
Claim 25
Dependent Claim
29 words
The method of claim 21, wherein said corner portions of said containing body each contain two tucks folded inwardly towards one another on an outside of said container body.
Claim 26
Dependent Claim
18 words
The method of claim 21, wherein said corner portions of said container body are formed with vertical wrinkles.
Claim 27
Dependent Claim
39 words
The method of claim 21, wherein gaps between corner portions of said male mold and said corner portions of said female molds are wider than gaps between adjacent straight edge portions of said male mold and said female mold.
Claim 28
Dependent Claim
30 words
The process of claim 21 or 22, wherein said step of attaching said cover comprises hot-melting said resin layer of said cover with said resin layer of said container body.
Claim 29
Dependent Claim
19 words
The method of claim 21 or 22, further comprising the steps of providing a tray around said containing body.
Claim 30
Dependent Claim
28 words
The process of claim 27, wherein said step of providing said tray comprises injection molding a resin material around a portion of said container body opposite said cover.
Claim 31
Dependent Claim
40 words
The method of claim 28, wherein said providing said tray further comprises: injection molding a resin material directly to an outer surface of said container body to contact with said tray, for smoothing the inner surface of said container body.
Claim 32
Dependent Claim
27 words
The method of claim 20, wherein said female mold has four substantially straight sides and four corner portions for gathering said wrinkles over aaid side wall portions.
References Cited (Backward Citations)
No citation records indexed.
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