Abstract

The invention relates to a method and a preform for producing tube-type bodies (2). An injection-molded preform (1) produced from a thermoplastic material is biaxial orientation-molded in a blow mold to give a container. Molding is carried out by stretching and by adding a pressurized blowing gas. The container (2) is removed from the blow mold as an intermediate product and a bottom zone (42) of the container is cut off. The wall of the preform (1) used for producing tubes is rotationally asymmetrical relative to a preform longitudinal axis so that a varying wall thickness is produced in a circumferential direction.

IPC Classes  ?

• B29C 49/00 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor
• B29C 69/00 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniquesApparatus therefor
• B29D 23/20 - Flexible squeeze tubes, e.g. for cosmetics
• B65D 35/08 - Body construction made in one piece from plastics material
• B29C 49/06 - Injection blow-moulding
• B29C 49/12 - Stretching rods
• B29C 49/36 - Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
• B29C 49/22 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor using multilayered preforms or parisons

Abstract

The invention relates to a method and a device for producing cartridges (41). An injection-molded preform (1) produced from a thermoplastic material is biaxial orientation-molded in a blow mold (4) to give a container (2). Molding is carried out by stretching and by adding a pressurized blowing gas. The container is removed from the blow mold as an intermediate product and a bottom zone (53) of the container is cut off. The cartridge can be closed with a bottom part optionally prior to or after filling.

IPC Classes  ?

• A61B 3/10 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
• B08B 3/04 - Cleaning involving contact with liquid

Abstract

The invention relates to a method and a device for producing tube-type bodies (41). An injection-molded preform (1) produced from a thermoplastic material is biaxial orientation-molded in a blow mold (4) to give a container (41). Molding is carried out by stretching and by adding a pressurized blowing gas. The container is removed from the blow mold as an intermediate product and a bottom zone (42) of the container is cut off. In a final step, the edges (49) of the cut are pressed and welded together. The tubular container can optionally be closed prior to or after filling.

IPC Classes  ?

• B29C 49/00 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor
• B29C 69/00 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniquesApparatus therefor
• B65B 3/02 - Machines characterised by the incorporation of means for making the containers or receptacles
• B29D 23/20 - Flexible squeeze tubes, e.g. for cosmetics
• B65D 35/08 - Body construction made in one piece from plastics material
• B65D 35/24 - Pliable tubular containers adapted to be permanently deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid materialHolders therefor with auxiliary devices
• B65D 83/00 - Containers or packages with special means for dispensing contents
• B29C 49/06 - Injection blow-moulding
• B29C 49/12 - Stretching rods
• B29C 49/36 - Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
• B29C 49/22 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor using multilayered preforms or parisons

Abstract

The invention relates to a method and a device for producing tube-type bodies (41). An injection-molded preform (1) produced from a thermoplastic material is biaxial orientation-molded in a blow mold to give a container (41). Molding is carried out by stretching and by adding a pressurized blowing gas. Stretching is carried out using a stretching rod (11) that is introduced into the interior of the preform and pushes against an upper portion (56) of the mouth section (21). The container is removed from the blow mold as an intermediate product and an edge portion (42) of the container facing away from the mouth section is cut off. In a final step, the edges of the cut are pressed and welded together. The tubular container can optionally be closed prior to or after filling.

IPC Classes  ?

• B29C 49/00 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor
• B29C 69/00 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniquesApparatus therefor
• B65B 3/02 - Machines characterised by the incorporation of means for making the containers or receptacles
• B29C 49/06 - Injection blow-moulding
• B29C 49/14 - Clamps
• B29C 49/12 - Stretching rods
• B29C 49/36 - Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
• B29C 49/22 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor using multilayered preforms or parisons

Abstract

The invention relates to a method and a device for producing tube-type bodies (41). An injection-molded preform (1) produced from a thermoplastic material and having two opposite mouth sections (56, 65) is biaxial orientation-molded in a blow mold (4) to give a primary body (2). Molding is carried out by stretching and by adding a pressurized blowing gas. Stretching may be carried out using a stretching rod that is introduced into the interior of the preform and pushes against an upper portion of one of the mouth sections. The primary body is removed from the blow mold as an intermediate product and cut through to give two tubular containers. In a final step, the edges of the cut are pressed and welded together. The tubular container can optionally be closed prior to or after filling.

IPC Classes  ?

• B29C 49/00 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor
• B29C 69/00 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniquesApparatus therefor
• B65B 3/02 - Machines characterised by the incorporation of means for making the containers or receptacles
• B29C 49/06 - Injection blow-moulding
• B29C 49/14 - Clamps
• B29C 49/12 - Stretching rods
• B29C 49/36 - Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
• B29C 49/22 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor using multilayered preforms or parisons

Abstract

The invention relates to a method for producing tube-type bodies (41). An injection-molded preform (1) produced from a thermoplastic material is biaxial orientation-molded in a blow mold (4) to give a container (2). Molding is carried out by stretching and by adding a pressurized blowing gas. The container is removed from the blow mold as an intermediate product and a bottom zone (42) of the container (41, 2) is cut off. In a final step, the edges of the cut are pressed and welded together. The container as the intermediate product is molded in such a manner that its shape deviates in at least some sections of a sidewall zone between a mouth section and a bottom opposite said mouth section from a cylindrical basic contour.

IPC Classes  ?

• B29C 69/00 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniquesApparatus therefor
• B29C 49/64 - Heating or cooling preforms, parisons or blown articles
• B29D 23/20 - Flexible squeeze tubes, e.g. for cosmetics
• B65D 35/08 - Body construction made in one piece from plastics material
• B65D 35/02 - Body construction
• B65D 75/50 - Tetrahedral packages
• B29C 49/06 - Injection blow-moulding
• B29C 49/12 - Stretching rods
• B29C 49/36 - Blow-moulding apparatus having movable moulds or mould parts rotatable about one axis
• B29C 49/22 - Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mouldApparatus therefor using multilayered preforms or parisons