A manufacturer of laboratory equipment was experiencing inconsistencies with the weldability of the polypropylene sheet that they were buying. Some lots of material welded well and some exhibited poor weld strength. Polypropylene Sheet and Polypropylene Welding Rod The production manager contacted a Curbell salesperson to discuss the problem. Curbell provided the lab equipment manufacturer with a particular brand of polypropylene sheet and polypropylene welding rod that showed consistently good weld strength with the fabricator’s equipment and processes. This solved the quality issue that they were having. Need assistance with your plastic challenges? We're here to help. We provide technical support and high quality materials for thermoplastic welding applications. Call 1-800-553-0335 | Ask an expert | Explore our materials