(1) There is a toad skin phenomenon on the surface of the plastic layer.
(2) The temperature control is low, the meter pointer reflects the low temperature, and the actual measured temperature is also low.
(3) The surface of the plastic is black with tiny cracks or small particles that are not well plasticized.
(4) The plastic glue is not well stitched, and there is an obvious mark.
2. Reasons for poor plasticization of pvc edge banding
(1) The temperature control is too low or the control is inappropriate.
(2) There are resin particles that are difficult to plasticize in plastics.
(3) The operation method is improper, the screw and traction speed are too fast, and the plastic is not completely plasticized.
(4) The plastics are not uniformly mixed during granulation or the plastics themselves have quality problems.
3. Eliminate poor plasticization of pvc edge banding
(1) Control the temperature according to the process regulations. If the temperature is low, increase the temperature appropriately.
(2) It is necessary to appropriately reduce the speed of the screw and traction to increase the time for plastic heating and plasticization to improve the plasticization effect of the plastic.
(3) Use screw cooling water to strengthen the plasticization and tightness of the plastic.
(4) When selecting the mold, the mold sleeve should be appropriately smaller to strengthen the pressure of the glue outlet.
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