VACUUM RTM MOLDING METHOD

PROBLEM TO BE SOLVED: To prevent the generation of a resin unimpregnated part caused by the excessive local flow of an injected resin in a cavity. SOLUTION: In the vacuum RTM molding method wherein the cavity of a mold, in which a reinforcing fiber substrate is arranged, is evacuated and the resin i...

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Main Authors SEKIDO SHUNEI, OOSETO HIROKI
Format Patent
LanguageEnglish
Published 29.01.2003
Edition7
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS
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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Abstract PROBLEM TO BE SOLVED: To prevent the generation of a resin unimpregnated part caused by the excessive local flow of an injected resin in a cavity. SOLUTION: In the vacuum RTM molding method wherein the cavity of a mold, in which a reinforcing fiber substrate is arranged, is evacuated and the resin is injected in the evacuated cavity by utilizing the difference pressure between the inner pressure of the cavity and outside pressure to impregnate the reinforcing substrate, the injection speed of the resin is reduced to a flow velocity lower than the natural flow velocity due to the difference pressure to inject the resin in the cavity.
AbstractList PROBLEM TO BE SOLVED: To prevent the generation of a resin unimpregnated part caused by the excessive local flow of an injected resin in a cavity. SOLUTION: In the vacuum RTM molding method wherein the cavity of a mold, in which a reinforcing fiber substrate is arranged, is evacuated and the resin is injected in the evacuated cavity by utilizing the difference pressure between the inner pressure of the cavity and outside pressure to impregnate the reinforcing substrate, the injection speed of the resin is reduced to a flow velocity lower than the natural flow velocity due to the difference pressure to inject the resin in the cavity.
Author SEKIDO SHUNEI
OOSETO HIROKI
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Snippet PROBLEM TO BE SOLVED: To prevent the generation of a resin unimpregnated part caused by the excessive local flow of an injected resin in a cavity. SOLUTION: In...
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SubjectTerms AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS
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
Title VACUUM RTM MOLDING METHOD
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