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US 6,562,281 B1Granted
Method for making sterilized plastic containers, and installation therefor
AssigneeSidel
InventorsBernard Marchau, Patrick Mie, Christian Bonnel, Francois Quetel
Life of this patent
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Abstract
In a system for manufacturing containers by blow-molding or drawing/blow molding of previously heated preforms, sterile containers (110) are obtained by wetting (45) the preforms (3) using an appropriated heat-activated sterilizing product by activating the product by heating means (100) which also provide a suitable heating profile to the preforms to prepare them for blowing.
Claims31
Procedure for obtaining a sterile container (110) from a preform (3) of thermoplastic material, comprising:
- 1) applying (4, 41-44, 45) a heat-activated sterilizing product, to the said preform (3);
- 2) heating the preform to simultaneously activate the said product and increase the temperature of the preform in preparation to reach its softening temperature;
- and
- 3) molding (101) the said preform by blow molding, alternatively drawing and blow molding, to obtain the final container (110).
1 more element
Dependencies are inferred from the claim text.