Moulded foam article with thick and thin wall portions

Details Moulded foam article with thick and thin wall portions Moulded foam article with thick and thin wall portions

B - Operations, Transporting

29

C

B29C 44/04 (2006.01) B29C 33/30 (2006.01) B29C 44/08 (2006.01) B65D 1/40 (2006.01)

Patent

CA 2227240

A cup of plastics material incorporating foaming agent has thin wall portions, namely a base (101), a lower side wall (102) and an upper side wall (103). These portions have their wall thickness determined by mould part gap. The cup also has thick wall portions, namely the corner (104), the band (105) and the rim (106), in which foaming occurs after mould opening so that the wall thickness is increased beyond that provided by the mould.

L'invention porte sur un gobelet en matière plastique dans laquelle est incorporé un agent moussant. Ce gobelet comporte des sections de paroi minces, à savoir, la base (101), une paroi latérale inférieure (102) et une paroi latérale supérieure (103), l'épaisseur des parois de ces parties étant fixée par l'écartement du passage ménagé dans une fraction du moule. Ce gobelet comporte également des sections de paroi épaisses, à savoir le coin (104), l'anneau (105) et le rebord (106), parties dans lesquelles l'épaisseur de la paroi est renforcée au-delà des possibilités offertes par le moule.

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