Process for the manufacture of one-piece plastic wads for...

Details Process for the manufacture of one-piece plastic wads for... Process for the manufacture of one-piece plastic wads for...

C - Chemistry, Metallurgy

06

B

86/2

C06B 21/00 (2006.01) B29C 49/04 (2006.01) B29C 49/38 (2006.01) B29C 49/50 (2006.01) F42B 7/08 (2006.01) B29C 49/60 (2006.01)

Patent

CA 1213764

Abstract The one-piece plastic wad (13) used for the manufacture of shot cartridges is first preformed by extrusion by means of a die (1) to give a parison (6) which is then finally shaped in a blow mould (7a/7b) by means of compressed air. The compressed air is intro- duced by means of a needle (8) through the blow mould into the parison (6). This makes the hitherto required expensive injection mould unnecessary and, moreover, the process can be carried out continously. (Figure 1)

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