1.0Plastform | Kina Mold Makerhttps://www.plasticmoldco.com/nbChapter 26-1,Shrinkage and warpage - Plastic Mold | China Mold Makerrich600338<blockquote class="wp-embedded-content" data-secret="3OXCakwy4V"><a href="https://www.plasticmoldco.com/nb/2018/10/17/kapittel-26-1krymping-og-skjevhet/">Kapittel 26-1, Krymping og skjevhet</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.plasticmoldco.com/nb/2018/10/17/kapittel-26-1krymping-og-skjevhet/embed/#?secret=3OXCakwy4V" width="600" height="338" title="«Chapter 26-1,Shrinkage and warpage» — Plastic Mold | China Mold Maker" data-secret="3OXCakwy4V" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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</script>Why do they occur? Shrinkage is inherent in the injection molding process. Shrinkage occurs because the density of polymer varies from the processing temperature to the ambient temperature (see Specific volume (pvT diagram)). During injection molding, the variation in shrinkage both globally and through the cross section of a part creates internal stresses. These so-called […]https://web.archive.org/web/20130131102912im_/http://www.moldchina.org/wp-content/uploads/2011/10/Shrinkage-and-warpage.gif