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3932095 |
Blow molding apparatus
A blow molding apparatus including a rotary frame located adjacent a parison heating oven and having a plurality of blow molds mounted thereon for rotation therewith about the frame axis. A...
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3930779 |
Injection molding apparatus with improved cooling
This invention cools the blowing mold and the plastic article blown therein to shorten the time that a core rod must remain at a blowing station of a blow molding machine for making plastic...
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3924998 |
Blow molding apparatus having side discharge of finished articles
In a blow molding apparatus in which preforms are heated in an oven, transferred to a blow mold and formed in the blow mold into a finished article, an arrangement for discharging finished articles...
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3910746 |
Apparatus for manufacturing hollow articles of thermoplastic resin by blowing
An apparatus for manufacturing hollow articles from thermoplastic resin with a blow mold wherein a blowing and filling mandrel is disposed within the blow mold upon being introduced from a bottom...
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3907475 |
Apparatus for blow molding containers
A method and apparatus for blow molding hollow plastic containers which include a split mold having two mold halves. A blow pin support assembly is attached to one of the mold halves and extends...
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3898029 |
Method and apparatus for forming and keeping molten the recessed area of a fabricated plastic product
In a blow-molding operation, a method of forming a recessed area in the exterior wall of the parison and maintaining the recessed area in a heated condition while the remainder of the parison is...
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RE28497 |
Method of and apparatus for making a plastic article
A method of and apparatus for blow molding and cooling plastic articles. A hot parison is expanded in the cavity of an enclosing mold by a gaseous blowing medium. While the expanded, still hot...
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3892513 |
Apparatus for making blow-molded containers having handles
Two mold sections are provided for making the body of a blow-molded synthetic plastic container. One of the mold sections has a rigid first surface whose outline corresponds to that of a generally...
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3880973 |
Blow molding process for forming a molding having a screw-thread portion
In a process for blow molding of a thermoplastic resin parison by using a mold, the resin is blown and molded in the mold while a local part of the mold is heated for a short period of time to...
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3880301 |
Apparatus for handling workpieces
A process for handling workpieces by sequentially loading them into holder portions of continuously moving carrier assemblies, simultaneously abruptly shifting a group of such holders to...
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3872203 |
METHOD FOR PRODUCING BIAXIALLY STRETCHED RECEPTACLES BY BLOW MOLDING
A blow molding method for forming receptacles. A tubular parison is heated in a furnace, transferred to a delivery rotary, rotated to a position adjacent a stretching rotary, transferred to the...
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3870452 |
Apparatus for the production of an article from thermoplastic synthetic plastic, using blowing, injection and blowing or foil blowing process
An improved apparatus for the production of flow molded shaped articles from a synthetic thermoplastic polymeric material is provided. The hollow shaped article following blowing is cooled through...
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3870446 |
CLAMPING JAWS WITH OFFSET TINES FOR ALIGNMENT AND TRANSFER OF PARISONS
A parison transfer device comprises a pair of opposed clamping jaws with offset tines disposed so as to extrude polymer laterally between said tines to form a flange at right angles to the axis of...
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3869239 |
APPARATUS FOR BLOW MOLDING AND TRANSFER MOLDING THERMOPLASTIC MATERIAL
A method of and apparatus for combining a transfer molding operation with a blow molding operation to form an article having wall sections of different thicknesses. The major portion of an extruded...
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3868206 |
Apparatus for manufacture of highly oriented polymeric containers
A method and apparatus for making highly oriented polymeric containers in which the method involves the deposition of a thermoplastic material onto an elastomeric form, fusing the material into a...
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3867086 |
APPARATUS FOR MOLDING A PLASTIC CONTAINER
Manufacture of a shaker type plastic container as a reform from a generally frusto-conical nestable preform which includes a portion of predetermined configuration at the reduced end apertured to...
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3865531 |
BLOW MOLDS FOR MAKING CONTAINERS HAVING RECESSED BOTTOMS
An apparatus for blow molding containers having a closed recessed end such as a "champagne" bottle bottom. A parison is first formed in a mold cavity into a blown article of a shape comprising a...
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3865912 |
Method for controlling wall thickness during a blow-moulding operation
A blow-moulding method employs a heating chamber for receiving a thermoplastic slug with a plurality of infra-red radiators in the chamber arranged to heat different portions of the slug to...
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3857660 |
INJECTION-BLOW MOLDING MACHINE
A machine is provided for molding parisons of organic resinous thermoplastic material in a one piece injection mold, about a core rod, and for then transferring the parison on the core rod to a...
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3850562 |
APPARATUS FOR PRODUCING HOLLOW MOLDED ARTICLES
Apparatus for producing hollow molded articles includes means for injecting thermoplastic material into a mold cavity formed by a core, neck mold, and cavity mold to form a parison. The core is...
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3850566 |
PARISON OVEN HAVING IMPROVED DISCHARGE STATION
A blow molding apparatus in which parisons are heated in an oven by moving continuously therethrough on a carrier, after which the parisons are removed by a transfer arm which carries them to a...
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3849052 |
PIPE BELLING MACHINE
A pipe belling machine of elongated frame construction which employs a plurality of chain conveyors which function transversely of the machine to carry previously cut plastic pipes across the...
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3844700 |
METHOD AND APPARATUS FOR FORMING CONTINUOUS THERMOPLASTIC PIPE HAVING CORRUGATED SEGMENTS
An apparatus is detailed for forming continuous thermoplastic pipe which has spaced corrugated flexible wall portions along the length of the pipe. The pipe is extruded through a conventional...
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3843286 |
BLOW MOLDING APPARATUS
An improved apparatus for rapidly and smoothly opening and closing partible sections of a blow mold which includes actuating means for substantially symmetrically reciprocating opposing blow mold...
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3838961 |
INJECTION-BLOW MOLDING APPARATUS
In injection-blow molding apparatus of the type comprising a stationary die plate, a movable die plate, an injection molding female mold secured to the stationary die plate, a blow molding female...
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3838997 |
METHOD AND APPARATUS FOR THE EVAPORATIVE COOLING TOOLS OF GLASS FORMING MACHINES
Method and apparatus for cooling tools, especially plungers and molds for glass forming machines, in which a cooling liquid is sprayed in atomized form through one or a plurality of nozzles against...
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3837776 |
PRODUCT COOLING FOR BLOW MOLDING
A blow molding machine for making plastic articles has the plastic blown to the desired shape without requiring a blow mold cavity. A plastic coating is applied to a core rod which is covered by an...
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3832101 |
MOLDULAR CONSTRUCTION MULTI-STATION MOLDING APPARATUS
This invention is a multi-station molding machine of modular construction. Sections of a machine, such as an injection station; a pre-blow station; a full flow station; and a stripper station are...
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3819314 |
LINEAR TRANSFER INJECTION BLOW MOLDING
An injection blow molding machine for molding plastic receptacles is provided with a clamping plate on which is mounted a parison mold, a pair of split blow molds, one on each side of the parison...
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3819317 |
APPARATUS FOR BLOW MOLDING AND INJECTING COOLING GAS
A blow head assembly for a blow molding machine having a rotating blow pin and a mechanism for simultaneously injecting cooling gas and air into the interior of the parison.
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3809521 |
APPARATUS FOR BLOW MOULDING
Apparatus for blow moulding of plastics materials has a duct rotatable about a fixed extrusion head to deposit an extruded tube in a series of fixed moulds arranged in a ring. The duct may be...
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3807928 |
BLOW MOLD IMPROVEMENTS
Improvements in blow molding apparatus of the type which includes separable mold sections individually mounted on carrier blocks, the sections, when in closed position, having cavities which define...
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3807927 |
APPARATUS FOR COOLING BY REPEATED APPLICATION OF COOLING FLUID
Molding apparatus and processes particularly suited for blow molding, wherein a hollow article of plasticized material is cooled by repeatedly causing the pressure of fluid internally of the...
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3790319 |
TEXTURED FINGERS FOR PRECISE TEMPERATURE ADJUSTMENT OF PREHEATED PARISON PREFORMS
Tubular parison preforms for blow molding generally oval-shaped oriented hollow articles such as bottles are reheated to orientation temperature and the sides of the parison which are to be...
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3787170 |
RAPID HEATING OF PARISON PREFORMS
Tubular parison preforms are heated to orientation temperature by means of external radiant heat combined with affirmative heating of the parison on the inside.
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3784344 |
MULTI-PART BLOW-MOLD FOR MAKING HOLLOW BODIES FROM THERMOPLASTIC MATERIAL
The parts of the blow-mold have cooling spaces for circulation of a coolant, and have a negative inner wall corresponding to the outer contours of the hollow body to be formed. Each blow-mold part...
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3783157 |
BLOW MOLDING PROCESS
An improved process and apparatus for the production of blow molded shaped articles from a synthetic thermoplastic polymeric material are provided. The hollow shaped article following blowing is...
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3778214 |
APPARATUS FOR PREPARING A BIAXIALLY ORIENTED THERMOPLASTIC ARTICLE
Apparatus for preparing a biaxially oriented thermoplastic article, particularly a bottle useful in bottling liquids under pressure such as carbonated beverages. The apparatus is comprised of a...
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3771931 |
APPARATUS FOR MOLDING PLASTIC ARTICLES
A method and apparatus for blow molding of hollow plastic articles such as bottles and containers from continuously extruded tubular parison by employing a cooling system acting upon the parison...
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3768948 |
BLOW MOLD
A blow mold having high heat transfer capacity which includes carrier supported shells with cavity portions defining the article shape, each shell having the fins on its back surface extending...
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3764246 |
TRANSFER ARM FOR BLOW MOLDING APPARATUS
A transfer arm for a blow molding apparatus of the type in which a cold parison is heated in an oven, and then picked up out of the oven by a transfer arm and carried to a blow molding station at...
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3740868 |
PARISON OVEN
An oven in which parisons to be heated are carried back and forth along a plurality of generally parallel paths while in an upright position. The endless chain carrying the parison holders is...
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3737273 |
NECK FORMING PLUG WITH EMBEDDED DIAMOND PARTICLES
In the forming of a hollow object from a temperature conditioned thermoplastic parison, the parison is clamped at one end by a neck forming means, and a plug with diamond particles embedded in the...
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3724987 |
APPARATUS FOR THE BLOWING OF A TWO-COMPARTMENT CAN
An apparatus for the blowing of a two-compartment can of the type comprising two compartments, interconnected back-to-back in the area of their walls and facing one another in which there is at...
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3721514 |
BLOW MOLDING APPARATUS INCLUDING BALL SPLINE SHAFT FOR RAPID AND PRECISE PARISON TRANSFER
Parisons are removed from a heating means and positioned precisely on a neck forming assembly preparatory to blow molding by a transfer arm carried by a ball bearing spline shaft which allows...
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3712784 |
APPARATUS FOR BLOW MOLDING A PREFORM IN A MOLD WITH A STERILE GAS
A needle is retracted into a sterilization chamber where it undergoes heating to a sterilization temperature while a sterile gas is passed through the needle. The sterilized needle is then passed...
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3699199 |
CONTINUOUS BLOW MOLDING PROCESS WITH REDUCTION OF LENGTH COMPENSATION
In a continuous blow molding operation, mold release of the newly formed container is facilitated by providing a conveyor adjacent to the point where the mold opens. The newly formed container is...
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3694424 |
METHOD OF INTERNALLY COOLING A BLOW MOLDED ARTICLE
A method of blow molding a hollow article of thermoplastic material in which the newly formed article is cooled internally by explosively injecting into the article a charge of a highly pressurized...
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3690802 |
APPARATUS FOR THE MANUFACTURE OF HOLLOW OBJECTS, IN PARTICULAR BOTTLES OF THERMOPLASTIC MATERIAL UTILIZING INJECTION BLOWING METHOD
An apparatus for the production of hollow articles, such as bottles, from thermoplastic synthetic plastic material by the injection and blowing process, having an extruder, an injection mould, a...
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3661483 |
APPARATUS FOR CONTROLLING THE FLOW OF LIQUID
The intermittent flow of carbon dioxide liquid from a high pressure reservoir to a low pressure use area is controlled by a flow restricting orifice disposed in the supply line and a simple control...
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