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US 6,012,597 AGranted
Polyester bottle with a handle and method of manufacturing the same
AssigneeMitsubishi Plastics, Inc.
InventorsShunichi Nishihara, Masatoshi Ogishita
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AssigneeMitsubishi Plastics, Inc.
InventorsShunichi Nishihara, Masatoshi Ogishita
Estimating the term…
The present invention relates to polyester bottle with a handle comprising a polyester bottle body and a synthetic resin handle body mounted to said bottle body, and the method of manufacturing the same. Said bottle body comprises a neck portion, a shoulder portion continuous from said neck portion, a body portion continuous from said shoulder portion, a bottom portion continuous from said body portion and a handle mounting portion on the wall surface of said body portion formed by blowing air into a preform which is set to a cavity of a mold for biaxial stretch blow molding. Said handle body comprises a grip portion and a fixing portion continuous from said grip portion. Said fixing portion is connected to said handle mounting portion for mounting said handle body to said bottle body. Heat treatment is performed to at least said handle connecting portion of said handle mounting portion by heated air being blown into said bottle body. Said handle body could either be molded separately in advance, or molded after the blow molding of said bottle body by injection molding. Said heat treatment will be performed either after or simultaneously with the blow molding of said bottle body.
A polyester bottle with a handle including a polyester bottle body and a synthetic resin handle body mounted to said bottle body, said bottle body comprising a neck portion, a shoulder portion continuous from said neck portion, a body portion continuous from said shoulder portion, a bottom portion continuous from said body portion and a handle mounting portion on the wall surface of said body portion, formed by blowing air into a preform which is set to a cavity of a mold for biaxial stretch blow molding, said handle body comprising a grip portion and a fixing portion continuous from said grip portion, said handle body being mounted to said bottle body by connecting said fixing portion to said handle mounting portion, wherein a heat treatment is performed to at least a handle connecting portion of said handle mounting portion by heated air being blown into said bottle body so that said at least a handle connecting portion has a degree of crystallinity of 27% or more and 55% or less.
Dependencies are inferred from the claim text.