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| Number | Title | Issue Date |
| 4167935 | Phenolic laminate solar absorber panel and method of making A solar flat plate absorber panel is molded from a laminate consisting of a suitable web material impregnated with a thermosetting phenolic resin. The absorber plate is pressure formed from superimposed layers of material and mold-cured to produce a unita... | 09/18/1979 |
| 4164298 | Frosted bottle of saturated polyester One of the main objectives of the present invention is to provide a frosted bottle made of a saturated polyester. The bottle according to the present invention is made from a cylindrical material prepared by injection molding and has a bottom wall and a t... | 08/14/1979 |
| 4151249 | Method of making a blown bottle with internal ribs A method of making blown plastic containers having internal ribs is disclosed. The first step of the disclosed method is to prepare a substantially amorphous blowable plastic parison such that a major portion thereof is at a temperature within the orienta... | 04/24/1979 |
| 4131666 | Forming molecularly oriented containers from reheated preforms In forming containers from injection molded preforms of thermoplastic material such as nitrile-based polymers by a process which includes heating the preforms to orientation temperature followed by distension to container form in a mold, the improvement p... | 12/26/1978 |
| 4097570 | Method for making plastic articles A method for molding an end portion of a tubular thermoplastic parison prior to a blow molding operation to form a parison finish and an annular support flange. The method includes closing a laterally movable, sectional mold onto a circumferential section... | 06/27/1978 |
| 4076071 | Method for heating plastics materials Workpieces of a synthetic plastics material are heated to enable further lding thereof to be effected. Heating is effected by infra-red radiators and, in order to ensure that localized overheating is avoided, the surface of the workpiece which is exposed... | 02/28/1978 |
| 4050887 | Method and apparatus for temperature conditioning parts Apparatus for temperature-conditioning workpieces comprises a series of bar assemblies for supporting a number of elongated molded parts in side-by-side relationship, heat transfer assemblies including horizontally spaced panels extending along a chamber,... | 09/27/1977 |
| 4036927 | Preparation of molecularly oriented containers using reheat process Molecularly oriented containers are formed from molded preforms made of an amorphous thermoplastic resin and having a finished neck tubular portion and a body portion which method includes subjecting the preform body to a thermoforming orienting step whil... | 07/19/1977 |
| 4035455 | Method for blow molding a hollow plastic article having a concave base In a blow-moulding process, the base of a hollow plastics body is formed initially of convex configuration and then a portion of the base is deformed inwardly to provide a concave area surrounded by an annular support surface. Deformation of the base is c... | 07/12/1977 |
| 4035463 | Method of making hollow articles, especially bottles, of thermoplastics Hollow articles of thermoplastics, especially bottles, are made from tubular blanks by heating the ends thereof and press molding first their bottom and neck portion. Then the preformed blanks are heated around their center portion and are transferred int... | 07/12/1977 |
| 4025594 | Method for production of hollow articles from injection molded preforms Hollow articles such as bottles and containers are formed from tubular, elongated injection molded preforms made of thermoplastic material and having a finished neck portion adjacent an open end and a closed end body portion which method comprises anneali... | 05/24/1977 |
| 3950459 | Continuous process for producing, reheating, and blow molding parisons The process comprises heating a hollow thermoplastic parison to orientation temperature ranges by selectively applying radiant heat to at least three portions of the parison. The thus irradiated parison is passed to a molding zone, and therein subjected t... | 04/13/1976 |
| 3947205 | Apparatus for forming non-nestable containers Reshaping of a nestable plastic container of substantially uniform wall thickness into a non-nestable container of substantially uniform wall thickness by substantially uniform radial and axial enlargement thereof. The nestable plastic container is heated... | 03/30/1976 |
| 3934743 | Blow molded, oriented plastic bottle and method for making same A molecularly oriented article having a tubular sidewall is blow-molded from a thermoplastic parison which is heat-treated prior to blowing to provide the parison sidewall with a temperature gradient wherein the temperature of the inside of the sidewall i... | 01/27/1976 |
