MANUFACTURE OF RESIN PASTE

• Main Authors: NAKAMURA SADAHIRO, YOTSUMOTO SHIYUU, OOMOTO MICHINOBU, UEDA SATORU
• Format: Patent
• Language: English
• Published: 13.07.1999
• Edition: 6
• Subjects: MAKING GRANULES OR PREFORMS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To obtain excellent characteristics of material quality while dispersibility of a filler is excellent, and a bubble and foreign matter do not exist by a method wherein after kneading with three pieces of rolls, kneading/ defoaming are executed by using a vacuum kneader, and further filtering operation is executed thereafter. SOLUTION: For manufacture of a resin paste, a resin raw material, a filter, a curing agent, etc., are blended (the first process). Then, clearances among three rolls are narrowed to such a degree that pulverizing of the filler does not occur, and the blended resin is kneaded (the second process). Then, in a process wherein resin after defoaming is kneaded/defoamed by using a vacuum kneader having an excellent defoaming effect, the defoaming is executed until the bubble hardly exists (the third process). Then, a filtration process is applied to the kneaded/defoamed resin paste to remove thoroughly solid waste or the like penetrated into the resin paste (the fourth process). Thereby, the resin paste wherein dispersibility of the filler is excellent, the bubble and foreign matter hardly exist, and material qualities are excellent, can be manufactured.