Purushottam D Agrawal, John F Mandell: Method for producing a collapse resistant polyester container for hot fill applications. Monsanto Company, Michael J Murphy, March 9, 1982: US04318882 (135 worldwide citation)

A collapse resistant polyester container is provided for hot fill applications employing product fill temperatures up to about 190.degree. F. (87.8.degree. C.) or more. The container has at least one region which is thermoelastically deformable inwardly after the container is hot filled and sealed t ...

Thomas E Brady, Santos W Go: Apparatus for forming heat treated blown thermoplastic articles. Owens Illinois, Charles S Lynch, M E Click, D H Wilson, November 11, 1980: US04233022 (106 worldwide citation)

A method and apparatus are disclosed for developing a strain crystallized morphology in blowbottles of thermoplastic material by a heat treatment process subsequent to a blow molding operation. In a first embodiment, the blow mold itself includes means for differentially heating the blown article al ...

Claude Bonnebat, Gilbert Roullet: Process for preparing biaxially oriented hollow shaped articles from thermoplastic materials. Rhone Poulenc, Burns Doane Swecker & Mathis, May 24, 1983: US04385089 (98 worldwide citation)

A process for preparing biaxially oriented hollow shaped articles, in particular bottles of thermoplastic material, by biaxial draw- and blow-molding comprises blow-molding a preform and subsequently maintaining the thermoplastic material in close contact with the hot walls of the mold at a temperat ...

Albert R Uhlig: Method of making a blown hollow article having a ribbed interior surface. Owens Illinois, Charles S Lynch, M E Click, D H Wilson, October 9, 1979: US04170622 (95 worldwide citation)

A method is disclosed for reinforcing hollow articles, such as bottles, blow molded from a heated thermoplastic material. A hollow parison is preformed with concave grooves in its exterior surface and corresponding ribs on its interior surface at locations in which the finished article is to be rein ...

Cogswell Frederic Neil, Mitchell David Thomas: A method for producing a shaped article comprising two closely-spaced substantially parallel walls enclosing a volume therebetween which is filled with foam.. Ici, June 24, 1981: EP0030936-A2 (90 worldwide citation)

Articles are blow moulded from thermoplastic polymeric materials containing high proportions of fillers such as glass fibres. The method comprises extruding the filled polymeric material through a die having a mandrel for constraining the material into a tubular shape; coextruding between the die an ...

Dietmar Przytulla, Harald Feuerherm: Method for making chime structure for blow molded hollow member. Mauser Werke, Pennie & Edmonds, March 29, 1983: US04378328 (83 worldwide citation)

The invention sets out a method and apparatus of forming a chime projecting radially outwardly of a blow molded hollow member. The chime is formed immediately after the blow molding of the hollow member by forming a radially outwardly projecting channel-shaped part in the side wall of the hollow mem ...

Franz Gittner, Arnaldo Glaser, Klaus D Kotke: Blow molding method. Bekum Maschinenfabriken, Peter K Kontler, December 4, 1979: US04177239 (77 worldwide citation)

Thermoplastic pre-forms which are obtained as a result of expansion of parisons in a pre-form blow mold are transformed into bottles or analogous hollow shaped articles in a final blow mold. The first stage of transformation involves mechanical stretching of the pre-form in the cavity of the final m ...

Pallatheri M Subramanian: Process for making laminar articles of polyolefin and a condensation polymer. E I Du Pont de Nemours & Co, October 18, 1983: US04410482 (75 worldwide citation)

A process for manufacturing laminar articles by forming heterogeneous melts of a combination of a polyolefin and a condensation polymer incompatible with the polyolefin along with an alkylcarboxyl-substituted polyolefin as a compatibilizing material.

Long Fei Chang: Method for blow molding a container having a concave bottom. Owens Illinois, Richard D Heberling, E J Holler, July 19, 1977: US04036926 (72 worldwide citation)

A method of making a concave bottom on a blown thermoplastic container. A blowable pre-form is initially expanded against a composite mold surface defined by the end faces of a plurality of concentric tubes surrounding a central actuating rod. The rod and the tubes are initially telescopically posit ...

Thomas Robert Stephen Collins: Plastics container manufacture. Imperial Chemical, Cushman Darby & Cushman, August 2, 1977: US04039641 (69 worldwide citation)

An oriented plastics container, e.g. bottle, is heat set by holding an unheat set container against the heated walls of a split mould by means of gas under pressure, and thereafter cooling the container, e.g. by cooling the mould or by displacing said gas with a cooling liquid under pressure, and th ...