Title:
IMPROVEMENTS IN AND RELATING TO THE SHAPING OF ARTICLES
Document Type and Number:
WIPO Patent Application WO1995008410
Kind Code:
A3
Abstract:
The present invention relates to a method of shaping hollow articles which method comprises locating said article in juxtaposition with a die or shaping surface means, introducing products of combustion under pressure interiorly of the article, to expand the same against said die means thereby causing said article to assume a shape and/or configuration corresponding thereto, characterised by the operative combination whereby: i) the products of combustion are produced in situ interiorly of the article by introducing a combustible mixture therein and igniting the mixture to cause an increase in pressure to expand the article against the die means, and ii) the die means (31, 32) comprises two or more components at least some of which are capable of movement between an open eject position and a closed forming position, such movement having a significant component along the axis of the article being formed.
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Inventors:
BROWNBILL THOMAS DUNCAN (GB)
Application Number:
PCT/GB1994/002029
Publication Date:
June 01, 1995
Filing Date:
September 19, 1994
Export Citation:
Assignee:
METAL BOX PLC (GB)
BROWNBILL THOMAS DUNCAN (GB)
BROWNBILL THOMAS DUNCAN (GB)
International Classes:
B21D26/08; B21D51/26; (IPC1-7): B21D26/08
Foreign References:
| FR1342377A | 1963-11-08 | |||
| GB1532813B | ||||
| DE3720901A1 | 1989-01-05 | |||
| FR1562492A | 1969-04-04 | |||
| GB2148162A | 1985-05-30 | |||
| EP0215294A2 | 1987-03-25 | |||
| FR2206988A1 | 1974-06-14 |
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