Good materials cost management compels us to use scrap or distressed material in the feed because of its lowers costs. A few ideas: if color is not critical,add it to balance-out the yellowing that reprocessed material can cause. Always dilute distressed or scrap material with virgin material. Keep in mind that you may need to mix-in additives to meet performance specs when you use scrap. Always keep your distressed or scrap material in a clean condition, Never treat your scrap like scrap