Abstract: A method for preparing block polyether amide foamed particles with sandbag structure includes: premixing modifier, filler and coupling agent, melting and blending the premixed raw materials, and preparing blended particles I with core-shell structure after underwater granulation or water tank granulation; premixing the blended particles I with block polyether amide raw material, melting and blending the premixed raw material, and preparing block polyether amide blended particles II with sandbag structure after underwater granulation or water tank cutting; putting the quantitative blended particle II into an autoclave, introducing quantitative environment-friendly physical foaming agent until the foaming agent and G2 blende particles reach a homogeneous system, evacuating autoclave pressure through a valve, and taking out block polyether amide blended particles III containing the foaming agent; and transferring the blended particles III into a thermostatic equipment at softening temperature of particles, and o

Abstract: A method for preparing block polyether amide foamed particles with sandbag structure includes: premixing modifier, filler and coupling agent, melting and blending the premixed raw materials, and preparing blended particles I with core-shell structure after underwater granulation or water tank granulation; premixing the blended particles I with block polyether amide raw material, melting and blending the premixed raw material, and preparing block polyether amide blended particles II with sandbag structure after underwater granulation or water tank cutting; putting the quantitative blended particle II into an autoclave, introducing quantitative environment-friendly physical foaming agent until the foaming agent and G2 blende particles reach a homogeneous system, evacuating autoclave pressure through a valve, and taking out block polyether amide blended particles III containing the foaming agent; and transferring the blended particles III into a thermostatic equipment at softening temperature of particles, and o

Abstract: The present invention discloses an optimized plug for a sink drainage to solve the inferior plug shaft and plug knob structure. The plug shaft and plug knob has two engaging structures, namely, rotating engagement and vertically sliding structure; the plug includes a plug body, a plug shaft, a plug knob, and a plug cap, wherein the plug shaft has side slot defined a top end, the plug knob has a trans-slot, a longitudinal annual channel, and knob shoulder and a biasing bridge slidable inserted into the side slot; by rotating the plug cap from 10° to 170° angular degree, the biasing bridge is supported by the top edge of the plug shaft for ensuring the plug in a water-flowing position, while from 171° to 11° degree, the plug knob is slide into the plug shaft for sealing the water; by inserting an elastic member into the trans-slot, the elastic member is adapted to extend out for biasing the plug shaft edge.