Today's KNOWLEDGE Share
When trying to move to plant-based or biosourced plastic materials, a whole host of challenges will come-up.
Due to intrinsically lower Tg of bio-materials, chances are that you will have to transition to semi-crystalline materials and develop a very skillful mastering of precise shrinkage control in your molding process. Subtle physical phenomena including molecular orientation, flow induced crystallinity, slow dimensional recovery by relaxation will make your life a bit more complicated.
Lower thermal stability will also seriously tighten-up your limits in terms of thermal control and residence time in your process. Drying may suddenly become a critical step too.
Overall, a much better and deeper understanding of the molding process and specific plastic materials will be needed to address these challenges.
Source:Vito Leo
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#plastics #biobased #injectionmolding #shrinkage #semicrystalline #thermal #orientation
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