EXTRUSION DIE FOR MOLDING HONEYCOMB STRUCTURES

An extrusion die is used for producing a honeycomb structures. The extrusion die is composed of a guide ring and a die body part. Feeding holes and slit grooves are formed in the die body part. The guide ring has a pole part and a guide part. A slit groove formation area has a central slit groove fo...

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Bibliographic Details
Main Author ASAOKA TADANOBU
Format Patent
LanguageEnglish
Published 29.01.2009
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:An extrusion die is used for producing a honeycomb structures. The extrusion die is composed of a guide ring and a die body part. Feeding holes and slit grooves are formed in the die body part. The guide ring has a pole part and a guide part. A slit groove formation area has a central slit groove formation surface area having a step shaped part and an outer peripheral slit groove formation area. An angle of the step-shaped part to an outer slit groove formation surface is within a range of 90°<=alpha<=95°, and a relationship A<=B<1.5 A is satisfied, where A is a gap between the outer peripheral slit groove formation surface to the guide part, and B is a gap between the outer peripheral side surface of the step shaped part and the front end of the guide part.
Bibliography:Application Number: US20080174973