APPARATUS FOR CONTINUOUSLY MANUFACTURING POLYVINYL ACETAL POROUS MATERIAL

Polyvinyl acetal porous material is continuously manufactured from a reaction liquid material containing polyvinyl alcohol, starch, aldehyde and acid catalyst by an apparatus comprising a conveyer chain circulating along a closed path; a plurality of U-shaped unit members secured to the conveyer cha...

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Bibliographic Details
Main Authors HATTORI T,JA, MARUYA M,JA, KOIDE T,JA, TASHIRO S,JA, YAMAMURA T,JA, ISHIZAWA K,JA
Format Patent
LanguageEnglish
Published 01.10.1974
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
MAKING GRANULES OR PREFORMS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE
RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
WORKING-UP
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Summary:Polyvinyl acetal porous material is continuously manufactured from a reaction liquid material containing polyvinyl alcohol, starch, aldehyde and acid catalyst by an apparatus comprising a conveyer chain circulating along a closed path; a plurality of U-shaped unit members secured to the conveyer chain, and joinable with each other to form a horizontal reaction trough for receiving the reaction liquid material, and each of said members being provided with an inner bottom and a pair of inner side walls made of an insulating material, on which walls at least one pair of electrodes facing each other are disposed; a feed conduit for feeding the reaction liquid material onto an entrance portion of the reaction trough; a plurality of pairs of brushes brought into slidable contact with the electrodes of the U-shaped unit members coming to the entrance portion of the reaction trough, and; means for applying a voltage to the brushes, including at least one voltage source, whereby the reaction liquid material is heated by Joule heat generated therewithin.
Bibliography:Application Number: US19730355527