Transparent plastic processing and resolution of defects
(a) Silver grain: the filling and cooling process, the internal stress anisotropy effects of the stress generated by the vertical direction, so that resin flow occurred on the direction and the orientation of production and non-mobile students to different refractive index flash wire lines, when it expanded, it may make the product cracks. In addition to injection molding process and mold on the outside attention (see Table, the best products for annealing. such as the pc material can be heated to 160 ℃ and kept for 3 to 5 minutes, then natural cooling can be.
(b) of the bubble: the Lord in the resin of water vapor and other gas emissions do not go out (in mold cooling process), or lack of filling, excessive condensation condensation surface, which formed a "vacuum bubble." ways of their overcoming Table.
(c) Surface gloss difference: the main in the mold roughness large, on the other hand condensation prematurely, so that resin can not copy the state of the mold surface, all of which are small rugged cattle production to the surface, these products will lose their luster. the way to overcome the table.
(d) of the shock pattern: is the straight gate from the center of intensive formation of ripples, the reason for the melt viscosity is too large, front-end material has been condensed in the cavity, was expected to further break through the condensation surface, the surface seismic profiling Er Shi. them overcome the method table.
(e) washed out. fog halo: mainly due to dust in the air fall material into or material caused too much moisture.
(f) white fumes. black spots: mainly due to plastic in the machine barrel due to overheating Ershi produce resin barrel formed by decomposition or deterioration.
Table: transparent product defects and methods to overcome
This Information from Wishsino Plastic Injection Molding Company.
