Polypropylene (PP), is a semi-crystalline, thermoplastic polymer used in many different products we use every days. This includes packaging and reusable containers to textiles and automotive components, to banknotes. Polypropylene is strong and resistant to lots of the main organic solvents, degreasing agents, and acids type.
Also PP has great physical and chemical properties, polypropylene is used all over because of its ease of fabrication and ability to sustain high ongoing operating temperatures. Compared to polyethylene it has a lower impact resilience, but offers higher working temperature and tensile strength.
Polypropylene has a lower surface energy type which means that many common glues will not bond to the surface. Joining polypropylene requires specialist glues or can be done using a welding processes.
Polypropylene is available in two primary types Polypropylene Homopolymer (PP-H) and Polypropylene Copolymer (PP-C)
Polypropylene H (PP-H)
Polypropylene or PP-H is used in engineering and tooling uses as if offers higher dimensional rigidity than the copolymer grade, PP-H has a slight higher maximum working temperature as well as better chemical stability. It is resistant to staining and has a low moisture absorption rate. Polypropylene homopolymer (PP-H) is used in vacuum systems and process involving hot liquids and gases that are transported. If can be found in valves, flanges and gears.
In natural form Polypropylene H is physiologically inert and is approved for use in contact with food.
Forms: Rod and sheet, natural and beige.
PP-C (Polypropylene Copolymer)
Polypropylene copolymer is main found in more cosmetic applications, such as cladding. In particular is used for hygienic cladding and a range of other applications in the food industry.
Forms: Rod and sheet, black and beige.
Further information on our range of polypropylene products is available on request, please call if you have specific needs or would like advice on material choices.
MSDS and product data sheets available on request