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  Molded Part Cracking
   Chemical stress
   Fatigue failure
   Plated part cracking

  Molding Defects
   Silver streaks
   Short shot
   Jetting
   Flow marks
   Color streaks
   Weld lines
   Flash
   Delamination
   Stringiness
   Sink marks
   Warping or twisting

  Weathering

  Painting Defects
   Pinholes
   Cracks
   Sinking
   Crawling
   Sealing defects

 


  Plastic products are required to pass through a large number of different processes in their manufacture. However, since these components contain organic polymers, it is important to give consideration to usage environments.
  This site describes the problems for which customers sought assistance in the past and offers reference material for a variety of different situations.


 In order to countermeasure problems in molded parts, the following factors are used:

Fabrication, raw materials, design, and usage environment
Proper monitoring and analysis of problem parts

Although the correct approach for evaluation of problems calls for information pertaining to the actual product, its fabrication environment, and other similar factors, explanations are provided in general terms on this site, and therefore, they should be treated strictly as reference matter.

Please understand that we can only respond to inquiries which are relevant to our products.


  UMG ABS, Ltd accepts no responsibility for the quality or safety of any customer products which use our materials or which have made use of any type of data provided by this company. Customers are requested to independently determine the suitability of our materials for their products. We also request that sufficient attention also be paid to laws, regulations, and industrial rights.
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