Polypropylene applications blow molding

Products A wide range of polypropylene products (homopolymer, random copolymer and impact copolymer) can be produced to serve many applications, including injection molding, blow molding, thermoforming, film, extrusion, sheet and fiber. Impact copolymer produced using this process exhibits a superior balance of stiffness and impact resistance over a broad temperature range. 

Polyolefin - Polyolefins are a large class of carbon-chain elastomeric and thermoplastic polymers usually prepared by addition (co)polymerization of olefins or alkenes such as ethylene. The most important representatives of this class are polyethylene and polypropylene. There are branched and linear polyolefins and some contain polar pendant groups or are halogenated. Unmodified polyolefins are characterized by relatively low thermal stability and a nonporous, nonpolar surface with poor adhesive properties. Processed by extrusion, injection molding, blow molding, and rotational molding. Other thermoplastic processes are used less frequently. This class of plastics is used more and has more applications than any other. Also called olefinic resin, olefinic plastic. 

From the three basic categories of polypropylene, namely, homopolymers, heterophasic copolymers, and random copolymers (with ethylene), there are specialty resins with enhanced capabilities for specific applications. Producers of large blow-molded or thermoformed parts can thus utilize grades with high melt strength to fabricate heat-resistant under-the-hood automotive parts. 

In addition to bottles, a rapidly growing application for blow molding is the production of technical parts, such as automotive components—bumpers, ducts, and fluid containers. Common thermoplastic materials suited to blow molding include high-density polyethylene, polyvinyl chloride, polypropylene, and polyethylene terephthalate. 

Applicable materials for the injection blow molding process include high-density polyethylene (HOPE), low-density polyethylene (LDPE), polystyrene (PS), styrene acrylonitrile (SAN), ethylene vinyl acetate (EVA), polypropylene (PP), polycarbonate (PC), and polyurethane (PU). Polyethylene terephthalate (PET) and polyacrylonitrile (PAN) are less commonly used in the injection blow molding processes. 

Polypropylene, PP. Applications injection molding for domestic parts, car parts, electric appliances, packing materials, and pharmaceutical parts blow... 

Although the principal application of blow molding has been for bottle fabrication, it is being used increasingly for other parts such as automotive fuel tanks, seat backs, flexible bellows, and toys. High density polyethylene, polypropylene, poly(vinyl chloride) (PVC), and poly(ethylene terephthalate) (PET) are the principal resins molded in this way. For more special applications, however, other thermoplastics such as nylon, polyacetal, ABS, polycarbonate and ultra-high-molecular-weight polyethylene also are used. ... 

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