EP0131862A2
Expired / Lapsed
EP
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Method for manufacturing an angled and cylindrical container
Assignee: Toppan Inc
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Filing: 1984-07-05
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Granted: —
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Expires: 2004-07-05
Abstract
Abstract @ The present invention relates to a method for manufacturing a container including a body portion having a sectional shape of a polygon (more than a triangle). Particularly, the present invention is characterized in that a preliminarily formed container, wherein a body member of fan-shape, square-shape or the like is pasted together to form a cylindrical configuration and a closing member is secured to one of upper and lower open ends, is subjected to vacuum attraction through an attractive hole provided in a mandrel which is polygonal in section and in which sides constituting a polygon are inwardly somewhat curved, whereby the body member is formed into a polygonal cylindrical configuration and sides thereof are depressed in conformity with a sectional shape of the mandrel to form a container, which is thereafter disengaged from the mandrel by feeding compressed air through the attractive hole of the mandrel. The invention is suitable for a method for manufacturing a paper container for filling with juice or the like at a high temperature.
Inventors
- 👤 Sukenori Ito
- 👤 Yoshiaki Take
- 👤 Takahisa Hirayama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 05:02
CPC Classifications
B; B31; B31B; B31B70/00; B31B50/00; B31B50/26; B31B50/28; B31B50/282; B31B2160/00; B31B2160/10; B31B50/59; B31B50/594
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
177 words
A method for manufacturing a container in which closing members are provided on upper and lower open ends of an angled and cylindrical body member, the method comprising forming a preliminarily formed container on a mandrel, said preliminarily formed container being constructed such that ends opposed each other are superposed and adhered each other to form a cylindrical body member and a closing member is secured to one open end of the body member, said mandrel being constructed such that a body-forming recess portion having a sectional shape wherein sides of a suitable polygon are inwardly depressed to form a curved surface is provided, said body-forming recess portion being formed with small holes in connection with an attractive hole in the center thereof; effecting vacuum attraction from the attractive hole through small holes of said mandrel to depress the body member while adjusting to a sectional shape of the mandrel; applying compressed air through said attractive hole to disengage said preliminarily formed container from the mandrel; and thereafter providing a closing member on the other open end.
Claim 2
Independent Claim
177 words
A method for manufacturing a container in which closing members are provided on upper and lower open ends of an angled and cylindrical body member, the method comprising forming a preliminarily formed container on a mandrel, said preliminarily formed container being constructed such that ends opposed each other are superposed and adhered each other to form a cylindrical body member and a closing member is secured to one open end of the body member, said mandrel being constructed such that a body-forming recess portion having a sectional shape wherein sides of a suitable polygon are inwardly depressed to form a curved surface is provided, said body-forming recess portion being formed with small holes in connection with an attractive hole in the center thereof; effecting vacuum attraction from the attractive hole through small holes of said mandrel to depress the body member while adjusting to a sectional shape of the mandrel; applying compressed air through said attractive hole to disengage said preliminarily formed container from the mandrel; and thereafter providing a closing member on the other open end.
Claim 3
Dependent Claim
51 words
A method for manufacturing an angled and cylindrical container according to claim 1 wherein a preliminarily formed container is subjected to vacuum attraction, said preliminarily formed container being formed by winding the body member on said mandrel, superposing and joining opposed ends and securing a closing member to one open end.
Claim 4
Dependent Claim
58 words
A method for manufacturing an angled and cylindrical container according to claim 1 wherein a preliminarily formed container is mounted on said mandrel and subjected to vacuum attraction, said preliminarily formed container being formed by superposing and adhering opposed ends of the body member to form a cylindrical configuration, and securing a closing member to one open end.
Claim 5
Dependent Claim
56 words
A method for manufacturing an angled and cylindrical container according to claim 1, 2 or 3 wherein an intermediate portion of the body portion is formed into an angled and cylindrical configuration having a sectional shape in which sides of a polygon are inwardly depressed, and upper and lower portions are fomred into a cylindrical configuration.
Claim 6
Dependent Claim
29 words
A method for manufacturing an angled and cylindrical container according to claim 1, 2, 3 or 4 hwerein linear creases are provided at regular intervals on the body member.
Claim 7
Independent Claim
49 words
A method for manufacturing an angled and cylindrical container according to claims 1, 2, 3 or 4 wherein linear creases are provided at regular intervals on the body member, and creases are provided by which adjacent upper and lower ends of said linear creases are continuously joined each other.
Claim 8
Independent Claim
28 words
A method for manufacturing an angled and cylindrical container according to claims 1, 2, 3, 4, 5 or 6 wherein the body member principally comprises a paper layer.
Claim 9
Independent Claim
56 words
A method for manufacruring an angled and cylindrical container according to claims 1, 2, 3, 4, 5, 6 or 7 wherein small holes for attraction and disengagement are provided in the curved surfaces of the body forming recess portion of the mandrel and the projected portions, and said preliminarily formed container is subjected to vacuum attraction.
References Cited (Backward Citations)
No citation records indexed.
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