Blow molding apparatus
AssigneeEtimex Technical Components GmbH
InventorsUdo Gaumann, Guenther Wenger
Life of this patent
Estimating the term…
Abstract
An apparatus for blow-molding a parison, the apparatus comprising a mold defining a cavity into which a parison may be introduced for blow-molding, a die for extruding the parison into said cavity, and means for blowing a gas around the outside of the parison in said cavity, the means for blowing a gas around the parison comprising (a) a distributor located at the entrance of the mold cavity for emitting gas around the circumference of the parison and (b) means for injecting gas directly into said distributor, wherein during use the die is separated from the distributor by unenclosed space.
Claims24
An apparatus for blow-molding a parison, said parison having a circumference, said apparatus comprising
- a mold defining a cavity for receiving said parison,
- a die for extruding the parison into said cavity, and
- a blower for blowing a gas around the outside of the parison in said cavity, said mold cavity having an entrance, the blower comprising a distributor located at the entrance of the mold cavity for emitting gas around the circumference of the parison, and an injector for injecting gas directly into said distributor, the distributor comprising means for distributing the gas injected into said distributor around the circumference of the parison before the gas exits the distributor and comes into contact with the parison, wherein the die is separated from the distributor by an unenclosed space during use.
An apparatus for blow-molding a parison, said parison having a circumference, said apparatus comprising
- a mold defining a cavity for receiving said parison,
- a die for extruding the parison into said cavity, and
- a blower for blowing a gas around the outside of the parison in said cavity, said mold cavity having an entrance, the blower comprising a distributor located at the entrance of the mold cavity for emitting gas around the circumference of the parison, and an injector for injecting gas directly into said distributor, wherein the distributor comprises a central aperture for passage of the parison, an opening for attachment to a supply of gas, and at least one opening facing into the mold cavity for egress of the gas around the outside of the parison, and wherein the die is separated from the distributor by an unenclosed space during use.
An apparatus for blow-molding a parison, said parison having a circumference, said apparatus comprising
- a mold defining a cavity for receiving said parison, the mold comprising two halves,
- a die for extruding the parison into said cavity, and
- a blower for blowing a gas around the outside of the parison in said cavity, said mold cavity having an entrance, the blower comprising a distributor located at the entrance of the mold cavity for emitting gas around the circumference of the parison, and an injector for injecting gas directly into said distributor, the distributor is formed of two parts each associated with a respective half of the mold, said two parts being connected together when the two halves of the mold join, wherein the die is separated from the distributor by an unenclosed space during use.
An apparatus for blow-molding a parison, said parison having a circumference, said apparatus comprising
- a mold defining a cavity for receiving said parison,
- a die for extruding the parison into said cavity,
- a blower for blowing a gas around the outside of the parison in said cavity, said mold cavity having an entrance, the blower comprising a distributor located at the entrance of the mold cavity for emitting gas around the circumference of the parison, and an injector for injecting gas directly into said distributor, wherein the die is separated from the distributor by an unenclosed space during use, and
- a venturi nozzle, said gas blown around the outside of the parison being introduced into the distributor through said venturi nozzle.
A process for blow-molding an article, comprising the steps of
- extruding a parison having a circumference,
- introducing said parison into a mold cavity,
- injecting gas into a distributor located at, but separate from, an entrance of the mold cavity,
- emitting gas from the distributor around the parison within the mold cavity, and
- distributing said gas injected into said distributor around the circumference of the parison before the gas exits the distributor and comes into contact with the parison.
A process for blow-molding an article, comprising the steps of
- extruding a parison having a circumference,
- introducing the parison into a mold cavity through a central aperture in a the distributor located at, but separate from, an entrance of the mold cavity
- injecting gas from a supply of gas through an opening in the distributor, and
- emitting gas from at least one distributor opening facing into the mold cavity around the parison within the mold cavity.
A process for blow-molding an article, comprising the steps of
- extruding a parison having a circumference,
- providing a distributor with two parts and a mold with two halves, associating said parts with a respective half, and joining said mold halves together to connect said parts together to form a mold cavity,
- introducing said parison into said mold cavity,
- injecting gas into a distributor located at, but separate from, an entrance of the mold cavity, and
- emitting gas from the distributor around the parison within the mold cavity.
A process for blow-molding an article, comprising the steps of
- extruding a parison having a circumference,
- introducing said parison into a mold cavity,
- injecting gas from a venturi nozzle into a distributor located at, but separate from, an entrance of the mold cavity, and
- emitting gas from the distributor around the parison within the mold cavity.
Dependencies are inferred from the claim text.