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<p>[QUOTE=&quot;rlm&#039;s cents, post: 2649459, member: 7957&quot;]Most plastics can be virtually any softness/brittleness.&nbsp; I used to make a plastic from styrene and butadiene.&nbsp; It was relatively soft, but just loved plasticizers in the wrong way.&nbsp; It you ever had Xerox copies stick together, that was it.&nbsp; Another styrene/butadiene plastic you have seen much of would be tires.&nbsp; Obviously they have vastly different characteristics from Xerox ink.</p><p><br /></p><p>Most (all) food bags are polyethylene.&nbsp; It was made pliable enough not to require a plasticizer.&nbsp; Oh, and if you have ever had a colonoscopy, one of the more common preps consists of you drinking polyethylene.&nbsp; Believe me, it was a lot more &quot;pliable&quot; than food bags.</p><p><br /></p><p>FWIW, the prime drivers are chain length and cross linking.[/QUOTE]</p><p><br /></p>

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