| 摘要 |
PURPOSE:To obtain the title granule having surface coated with a surfactant, definite releasing ratio of foaming agent contained in a resin and water content, capable of complete and mutual melt-sticking of foamed granules and advantageously applicable also in a mold for article (e.g., fish box) having thin and complicate shape. CONSTITUTION:The aimed foamable styrene based resin granule for fish box, etc., wherein the surface of the foamable styrene based resin granule containing 1-20 pts.wt. foaming agent in 100 pts.wt. styrene based resin particle is coated with 0.01-0.3 pts.wt. non-ionic surfactant having 7-15 HLB(hydroiphilic-lipophilic balance) based on 100 pts. resin particle and surface-attached water content is <=0.5wt.%, preferably <=0.1wt.% and releasing ratio of foaming agent contained in the above-mentioned resin particle is 3-40wt.%, preferably 6-25wt.%. As the non-ionic surfactant, polyoxyethylenealkyl ether or polyoxyethlenealkylphenol ether is used. |
