Applications
PLEXAR tie-layers are chemically modified resins used to bond unlike materials, primarily in packaging and industrial applications. Product grades tailored for composite pipe applications exhibit superior adhesion before and after thermal cycling, rheological characteristics favorable for low pressure annular die designs, and long-term aging stability. Common adherents include polyethylene resins and copolymers, cross-linked polyethylene, polyamide (nylon), ethylene vinyl alcohol (EVOH), metal(s) and many others. Composite pipe applications often include hot and cold water plumbing, exposed radiant heating, subsurface/underfloor heating and other specialty uses.
Regulatory Status
Plexar tie-layers meet the requirements for the Food and Drug Administration regulation 21CFR 175.105 for adhesives. This regulation describes adhesives which may be safely used as components of articles intended for use in packaging, transporting or holding food in accordance with conditions outlined in that regulation. For an adhesive formulation to be used in compliance with Sections 175.105, it must be used under conditions that prevent the material from becoming a component of food in more than insignificant, de minimis, amounts.
Processing Techniques
A process melt temperature above 41°F (210°) is recommended to ensure adhesion between adherents. More specific suggestions can be made only when equipment, process parameters and conditions of use are known.This product is from the former Equistar product line. |
