Method and device for the after-cooling of a preform in the injection molding process
AssigneeFasti, Farrag & Stipsits GesmbH
InventorRainer Farrag
Life of this patent
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Abstract
The present invention relates to improving the after-cooling process of preforms from the injection molding process in respect to its efficiency and its economy.
Claims46
A method for the after-cooling of preforms that are produced in an injection molding to thereafter blow a hollow body therefrom in a subsequent hollow blasting process, the method comprising:
- providing a preform having a closed bottom;
- arranging the preform in an inset of an after-cooling plate;
- cooling an exterior surface of the preform with a cooling medium;
- and
- cooling an interior surface of the preform with a cooling medium.
A method according to claim, 2, wherein an outflow of the cooling medium used to cool the interior surface of the preform is directed upon an inner base zone of the preform.
A device for the after-cooling of preforms that are produced in an injection molding to thereafter blow a hollow body therefrom in a subsequent hollow blasting process, the device comprising:
- an after-cooling plate having an inset into which closed bottoms of preforms are arranged;
- and
- a plunger tube arranged to direct a cooling medium into the closed-bottomed preforms.
A method for the after-cooling of preforms that are produced in an injection molding to thereafter blow a hollow body therefrom in a subsequent hollow blasting process, the method comprising:
- providing a preform having a closed bottom;
- arranging the preform in an inset of an after-cooling plate;
- cooling an exterior surface of the preform with a cooling medium;
- and
- cooling an interior surface of the preform with a cooling medium, by applying the cooling medium through a feed element that comprises a plunger tube so that the cooling medium is introduced under excess pressure into the preform, the plunger tube including transverse bores which define nozzles that are used to aim the cooling medium in order to cool interior zones of the preform.
A method for the after-cooling of preforms that are produced in an injection molding to thereafter blow a hollow body therefrom in a subsequent hollow blasting process, the method comprising:
- providing a preform having a closed bottom;
- arranging the preform in an inset of an after-cooling plate;
- cooling an exterior surface of the preform with a cooling medium;
- and
- cooling an interior surface of the preform with a cooling medium, by applying the cooling medium through a feed element that comprises a plunger tube so that the cooling medium is introduced under excess pressure into the preform, the plunger tube including transverse bores which generate turbulence in the cooling medium.
A method for the after-cooling of preforms that are produced in an injection molding to thereafter blow a hollow body therefrom in a subsequent hollow blasting process, the method comprising:
- providing a preform having a closed bottom;
- arranging the preform in an inset of an after-cooling plate;
- cooling an exterior surface of the preform with a cooling medium;
- and
- cooling an interior surface of the preform with a cooling medium that is blown or injected into an interior space of the preform, the cooling medium comprising air that is cooled to a temperature as low as −35° C.
A method for the after-cooling of preforms that are produced in an injection molding to thereafter blow a hollow body therefrom in a subsequent hollow blasting process, the method comprising:
- providing a preform having a closed bottom;
- arranging the preform in an inset of an after-cooling plate;
- cooling an exterior surface of the preform with a cooling medium;
- cooling an interior surface of the preform with a cooling medium that is blown or injected into an interior space of the preform;
- exhausting cooling medium from the preform;
- collecting the exhausted cooling medium in a collecting chamber;
- and thereafter removing the collected cooling medium through an outlet.
A device for the after-cooling of preforms that are produced in an injection molding to thereafter blow a hollow body therefrom in a subsequent hollow blasting process, the device comprising:
- an after-cooling plate having an inset into which closed bottoms of preforms are arranged;
- and
- a plunger tube having a lower, face-side opening and arranged to direct a cooling medium into the closed-bottomed preforms.
A device for the after-cooling of preforms that are produced in an injection molding to thereafter blow a hollow body therefrom in a subsequent hollow blasting process, the device comprising:
- an after-cooling plate having an inset into which closed bottoms of preforms are arranged;
- and
- a plunger tube having transverse bores and arranged to direct a cooling medium into the closed-bottomed preforms.
A device for the after-cooling of preforms that are produced in an injection molding to thereafter blow a hollow body therefrom in a subsequent hollow blasting process, the device comprising:
- an after-cooling plate having an inset into which closed bottoms of preforms are arranged;
- and
- a plunger tube having a lower, face-side opening and transverse bores and arranged to direct a cooling medium into the closed-bottomed preforms.
Dependencies are inferred from the claim text.