US 12,691,629 B2 · Mold and stretch-blow molded polyester bottle

Abstract

A mold for producing a stretch-blow molded polyester bottle from a preform comprises mold parts that can be shifted between an open position and a closed position. The mold comprises: first and second mold shell, within which, in the closed position, a bottle body can be molded; a holding stopper, which can be inserted into a bottle neck; a blow pin having a compressed-air intake for biaxial stretching of the preform; and a bottom part, which closes the two mold shells at the bottom side and is configured to mold the bottle bottom. A base is formed on the bottom part, which base projects into an interior of the mold and has a side wall with an inclination angle (α) of at most 5 degrees with respect to a vertical axis (35) of the mold and is oriented in parallel with the vertical axis.

Claims9

Dependent claims

A mold for producing a stretch-blow-molded polyester bottle having a bottle neck, a bottle body, and a bottle bottom from a preform, comprising a first mold shell and a second mold shell configured to mold the bottle body when the first and second mold shells are in a closed position,

a holding stopper configured to be inserted into the bottle neck,
a blow pin having a compressed-air intake for biaxial stretching of the preform,
a bottom part that closes the two mold shells on the bottom side and is configured to mold the bottle bottom, and
a base formed on the bottom part that includes only a single projection that projects into an interior of the mold, the base having a side wall oriented in parallel with the vertical axis of the mold,
wherein the base projects beyond the remaining bottom part at a height between 5 and 7 mm.

2 more elements

Dependencies are inferred from the claim text.

Mold and stretch-blow molded polyester bottle

Life of this patent

Mold and stretch-blow molded polyester bottle

Life of this patent

Abstract

Claims9