EP0241002A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for manufacturing easy-to-open containers
Assignee: Sumitomo Bakelite Co Ltd
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Filing: 1987-04-07
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Granted: —
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Expires: 2007-04-07
Abstract
Abstract A process for manufacturing easy-to-open containers having a plastic cup body with a flange and a lid is proposed. The outer peripheral edge of the flange can be peeled off the cup body together with the lid to open the container. For this purpose, cut-through portions (5) and partially cut portions (4) are formed alternately in the flange (3). A web (11) of plastic sheet is firstly formed into cup bodies by means of male and female molds. The die-cutting of the cup bodies from the web and the formation of the cut-through portions and the partially cut portions may be carried out either at the same time or one after the other.
Inventors
- 👤 Fumihiko Kaneko
- 👤 Kanji Yoshimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 07:57
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/44; B29C51/445; B26; B26F; B26F1/00; B26F1/38; B26F1/40; B65; B65D; B65D77/00; B65D77/10; B65D77/20; B65D77/2024; B65D77/2028; B65D77/2032; B65D77/2044; B65D77/2048; B65D77/2052; B29C2793/00; B29C2793/0054; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2075; B65D2577/2083
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
88 words
A process for manufacturing easy-to-open containers, comprising the steps of feeding a web of synthetic resin intermittently, pressing the web by means of a male mold and a female mold arranged on both sides of the web to form a plurality of cup bodies, die-cutting the cup bodies from the web so that an outwardly protruding flange will be formed, and forming cut-through portions and partially cut portions alternately in the flange of said each cup body, said last two steps being carried out at the same time.
Claim 2
Dependent Claim
88 words
A process for manufacturing easy-to-open containers, comprising the steps of feeding a web of synthetic resin intermittently, pressing the web by means of a male mold and a female mold arranged on both sides of the web to form a plurality of cup bodies, die-cutting the cup bodies from the web so that an outwardly protruding flange will be formed, and forming cut-through portions and partially cut portions alternately in the flange of said each cup body, said last two steps being carried out at the same time.
Claim 3
Dependent Claim
77 words
A process for manufacturing easy-to-open containers, comprising the steps of feeding a web of synthetic resin intermittently, pressing the web by means of a male mold and a female mold arranged on both sides of the web to form a plurality of cup bodies, forming cut-through portions and partially cut portions alternately in the flange of said each cup body, and die-cutting said cup bodies from the web so that an outwardly protruding flange will be formed.
Claim 4
Dependent Claim
77 words
A process for manufacturing easy-to-open containers, comprising the steps of feeding a web of synthetic resin intermittently, pressing the web by means of a male mold and a female mold arranged on both sides of the web to form a plurality of cup bodies, forming cut-through portions and partially cut portions alternately in the flange of said each cup body, and die-cutting said cup bodies from the web so that an outwardly protruding flange will be formed.
Claim 5
Dependent Claim
87 words
A process for manufacturing easy-to-open containers, comprising the steps of feeding a web of synthetic resin intermittently, pressing the web by means of a male mold and a female mold arranged on both sides of the web to form a plurality of cup bodies, die-cutting said cup bodies from the web so that an outwardly protruding flange will be formed, and forming cut-through portions and partially cut portions alternately in the flange of said each cup body, said last step being carried out off the web line.
Claim 6
Dependent Claim
87 words
A process for manufacturing easy-to-open containers, comprising the steps of feeding a web of synthetic resin intermittently, pressing the web by means of a male mold and a female mold arranged on both sides of the web to form a plurality of cup bodies, die-cutting said cup bodies from the web so that an outwardly protruding flange will be formed, and forming cut-through portions and partially cut portions alternately in the flange of said each cup body, said last step being carried out off the web line.
Claim 7
Dependent Claim
87 words
A process for manufacturing easy-to-open containers, comprising the steps of feeding a plurality of strips of synthetic resin intermittently, pressing each strip by means of a male mold and a female mold arranged on both sides of the strip to form a plurality of cup bodies, die-cutting said cup bodies from the strip so that an outwardly protruding flange will be formed, and forming cut-through portions and partially cut portions alternately in the flange of said each cup body, said last two steps being carried out simultaneously.
Claim 8
Dependent Claim
87 words
A process for manufacturing easy-to-open containers, comprising the steps of feeding a plurality of strips of synthetic resin intermittently, pressing each strip by means of a male mold and a female mold arranged on both sides of the strip to form a plurality of cup bodies, die-cutting said cup bodies from the strip so that an outwardly protruding flange will be formed, and forming cut-through portions and partially cut portions alternately in the flange of said each cup body, said last two steps being carried out simultaneously.
Claim 9
Dependent Claim
15 words
A container as manufactured by the process according to any of claims 1 to 4.
References Cited (Backward Citations)
No citation records indexed.
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