Methods for making polyethylene terephthalate (PET) preforms and containers such as food bottles, containers and intermediate preforms obtained
AssigneeNestle Waters Management & Technology
InventorsGérard Denis, Murielle Vigny, Gérard Perez, Jean-Luc Lepage
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Abstract
The invention concerns the field of manufacture of PET containers designed in particular for packaging food products, particularly bottles for aerated beverages such as in particular natural and mineral water. The method for manufacturing PET resin preforms and the resulting preforms, a method for making PET resin containers from the preforms and the manufactured containers, in particular food bottles made of PET resin. The method for making PET resin preforms is characterised in that it consists in using a PET resin having an intrinsic viscosity (IV) less than 0.65 dl/g.
Claims20
A PET resin obtained from dihydroxy monomers and aromatic diacid monomers with the exception of naphthalene dicarboxylic acid, and having an intrinsic viscosity (IV) less than 0.65 dl/g, but between 0.45 dl/g and 0.65 dl/g.
A PET resin container, comprising a PET resin having an intrinsic viscosity lower than 0.65 dl/g.
A polyethylene terephthalate (PET) resin, obtained from monomers of terephthalic acid or terephthalic acid esters and ethylene glycol monomers as well as copolymers having at least 92.5% in number of recurring ethylene terephthalate, having an intrinsic viscosity (IV) lower than 0.65 dl/g.
Dependencies are inferred from the claim text.