Trouble name |
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Small holes appear on the part surface. |
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Streak in a wave-like shape produced on the sheet surface. |
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Wrinkle is formed during sheet take-up which deteriorates evenness, and welding due to the difference in the thickness. |
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When overlapping films are difficult to separate, the problem is called 'blocking'. Blocking occurs when the inside or outside of tubular films are attached together, or when films taken-off the core(cylinder) are overlapping each other. |
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Bubbles are formed on the sheet surface. |
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Silamilar to a white powder or oil oozes out to the sheet surface. |
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The roll looks uneven after taking up the soft sheet stuffs. |
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Similar to a fisheye, it is projected outside of the product when extruding the film or the electrical hose wire. |
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When attaching the plasticized PVC with other plastics, the plasticizing agent and pigment of the plasticized PVC intrudes other plastics or is pushed apart. |
Calendering