WaryBuyerI've been doing some research on this, and here's the best article I've found on the subject:
http://www.azom.com/article.aspx?ArticleID=7959
However, this indicates a transparent plastic, so it's either a different resin or has been tinted. Sorry that I can provide more definitive references here, it's a great question and I was hoping to find more.
http://www.azom.com/article.aspx?ArticleID=7959
However, this indicates a transparent plastic, so it's either a different resin or has been tinted. Sorry that I can provide more definitive references here, it's a great question and I was hoping to find more.
And here's one that directly addresses the use of resins in pens: http://www.richardspens.com/?page=ref/design/plastics.htm