GRAINED PARTING LINES IN MOLD FOR FOAM ARTICLES

A multi-section mold and method for molding a foam article. Micro-groove vents are formed in the parting line to expel gases from the mold cavity. Flashing that solidifies in the micro-groove vents takes the form of fringe-like elements. The roof of the mold cavity can be provided with similar micro...

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Bibliographische Detailangaben
Hauptverfasser:	YAMASAKI RYOKO, MCEVOY JAMES T, LI WEIHAN, MCCLARREN PATRICIA J
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A multi-section mold and method for molding a foam article. Micro-groove vents are formed in the parting line to expel gases from the mold cavity. Flashing that solidifies in the micro-groove vents takes the form of fringe-like elements. The roof of the mold cavity can be provided with similar micro-groove graining patterns to disrupt the accumulation of gas bubbles and minimize defects in the final foam surface.