| Patent Number |
Title Of Patent |
Date Issued |
| RE28721 |
Time saver plastic draw-back valve assembly |
February 24, 1976 |
| This invention decreases the time of an injection molding machine cycle by cutting off communication between the mold and the source of material as soon as injection is complete, and accumulating material for the next charge during the cooling part of the cycle. Pressure is maintained on |
| 4363619 |
Apparatus for making wide mouth container |
December 14, 1982 |
| A method and apparatus for blow molding a wide mouth container wherein substantially the entire container is multiaxially oriented in its formation. The method and apparatus produce this container in effectively a one station operation without the need for high pressure injection mol |
| 4098857 |
Method for making blow molded containers with high length to diameter ratio |
July 4, 1978 |
| This invention increases the length-to-diameter ratio of plastic articles made on injection molding machines without using long and relatively thin core rods. This added length is obtained by having the first part of the blowing operation stretch the parison lengthwise before there is an |
| 4070142 |
Injection of plastic in molding machine |
January 24, 1978 |
| This invention reduces the time that a core rod must remain at an injection station of a plastic blow molding machine. The injection operation is usually performed by a plasticizer, and while the injection operation itself requires very little time, the plasticizer performs other roles |
| 4056590 |
Blow molding method with double cycle for core rods |
November 1, 1977 |
| This blow molding method applies a coating to a core rod and then moves the core rod into an inactive position in which it travels through one cycle of the apparatus before being brought into interaction with a blowing and stripping station during a second cycle. This travel of the paris |
| 4043735 |
Balloon blow molding tooling |
August 23, 1977 |
| This invention relates to blow molding apparatus for making plastic articles. It circulates cooling fluid through core rods for cooling blown articles from the inside, preferably with the blown article on the outside of a balloon that is permanently connected with the core rod. The c |
| 4038006 |
Apparatus for making a blow molded container with hollow handle and method of making |
July 26, 1977 |
| A plastic container having a bail handle on one side, blown as one-piece with the container, is formed by injection molding a parison with a thickened portion then blow molding in a cavity having a portion into which the thickened portion of the parison is displaced to form a handle |
| 4018860 |
Injection blow molding with improved cooling |
April 19, 1977 |
| 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 articles. The cooling is performed by conditioned air that is dried to lower its dew point. An air |
| 4012187 |
Injection blow molding with preliminary injection blow mold |
March 15, 1977 |
| This improvement in injection blow molding apparatus applies means for blowing a parison while it is still in an injection mold cavity and after sucking back a small portion of the injected material. The possible blowing is very slight, but it causes the parison to remain in contact |
| 4005969 |
Apparatus for longitudinal stretch for blow molding |
February 1, 1977 |
| This injection blow molding machine has special provision for maintaining the plastic of a parison on a core rod at the orientation temperature of the plastic; and stretching the plastic of the parison lengthwise of the core rod for orientation in the direction of one axis without any |
| 3981668 |
Apparatus and method for longitudinal stretch for blow molding |
September 21, 1976 |
| This injection blow molding machine has special provision for maintaining the plastic of a parison on a core rod at the orientation temperature of the plastic; and stretching the plastic of the parison lengthwise of the core rod for orientation in the direction of one axis without any |
| 3972976 |
Method for longitudinal stretch of a parison to be blow molded |
August 3, 1976 |
| This injection blow molding method has special provision for maintaining the plastic of a parison on a core rod at the orientation temperature of the plastic; and stretching the plastic of the parison lengthwise of the core rod for orientation in the direction of one axis without any |
| 3955908 |
Balloon blow molding tooling |
May 11, 1976 |
| This invention relates to blow molding apparatus for making plastic articles. It circulates cooling fluid through core rods for cooling blown articles from the inside, preferably with the blown article on the outside of a balloon that is permanently connected with the core rod. The c |
| 3944645 |
Method for balloon blown plastic molding |
March 16, 1976 |
| This invention is a method of making blown plastic articles on an injection blow molding machine with an expandible balloon that covers the core rods and over which a parison is applied at an injection mold station. The parison can be blown at lower temperatures for better orientation; a |
| 3940223 |
Injection of plastic in molding machine |
February 24, 1976 |
| This invention reduces the time that a core rod must remain at an injection station of a plastic blow molding machine. The injection operation is usually performed by a plasticizer, and while the injection operation itself requires very little time, the plasticizer performs other roles |
| 3937610 |
Mist cooling of inside of blown plastic articles |
February 10, 1976 |
| This invention decreases the time required to cool a plastic article, in a blow molding cavity, by circulating a mist in the inside of the blown article. Globules of liquid in the mist contact with the inside surface of the blown article. Preferably this liquid evaporates and removes its |
| 3936260 |
Apparatus and method for making blow molded containers with high length to diameter ratio |
February 3, 1976 |
| This invention increases the length-to-diameter ratio of plastic articles made on injection molding machines without using long and relatively thin core rods. This added length is obtained by having the first part of the blowing operation stretch the parison lengthwise before there is an |
| 3930779 |
Injection molding apparatus with improved cooling |
January 6, 1976 |
| 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 articles. The cooling is performed by conditioned air that is dried to lower its dew point. An air |
