Plastic containers having improved physical properties fabricated from a composite billet
Номер патента: CA1045064A
Опубликовано: 26-12-1978
Автор(ы): Donald J. Roth
Принадлежит: Continental Can Co Inc
Опубликовано: 26-12-1978
Автор(ы): Donald J. Roth
Принадлежит: Continental Can Co Inc
Реферат: ABSTRACT OF THE DISCLOSURE Plastic containers having improved physical properties are prepared from a composite billet having an outer peripheral area composed of a thermoplastic resin and an inner central core portion composed of the thermoplastic resin modified with a material which imparts improved physical properties such as reduced gas permeability or increase stiffness or rigidity to the resin. The composite billet is molded into a container wherein the billet core is formed into the sidewalls and bottom of the container and the peripheral portion is formed into a flexible thermoplastic flange surrounding the open end of the container which can be doubled seamed to a metal end closure without fracture.
Coextruded multilayer foamed film for plastic container closures and process for manufacture
Номер патента: US5000992A. Автор: Robert H. Kelch. Владелец: Dow Chemical Co. Дата публикации: 1991-03-19.