"método de moldagem por compressão de um fechamento plástico de material polimérico espumado"

A method of compression molding a plastic article, such as a closure, includes providing a molten polymeric material, comprising a mixture of at least one molten polymer and a gas blended therein. The polymeric material is molded between cooperating male and female molds, with relative movement of t...

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Bibliographic Details
Main Authors JEFFREY M. PRISTERA, EDWARD KRESGE, JOHN ERSPAMER, LAWRENCE M. SMEYAK, HUGH MORTON, LINDSEY ABNEY, NAVANEETH BASHYAM, BRANDON HUGHES
Format Patent
LanguagePortuguese
Published 05.04.2016
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:A method of compression molding a plastic article, such as a closure, includes providing a molten polymeric material, comprising a mixture of at least one molten polymer and a gas blended therein. The polymeric material is molded between cooperating male and female molds, with relative movement of the molds controlled to form a mold cavity with a predetermined volume. Formation in this manner acts to produce a molded closure with substantially reduced density, thus achieving desired material savings, while still providing a closure or like article exhibiting desired performance characteristics.
Bibliography:Application Number: BR20121104461