What are the mechanical properties of polypropylene?

The properties of Polypropylene include…

  • Semi-rigid.
  • Translucent.
  • Good chemical resistance.
  • Tough.
  • Good fatigue resistance.
  • Integral hinge property.
  • Good heat resistance.

What is polypropylene film used for?

PP film is used for many common packaging applications such as cigarette, candy, snack and food wraps. It also can be used for shrink wrap, tape liners, diapers and sterile wrap used in medical applications.

What are the properties and uses of polypropylene?

Uses for polypropylene It offers excellent fatigue resistance and elasticity, securing it a well-deserved reputation for toughness and durability. Polypropylene has high insulation properties too, making it safe to use for plastic casing in electrical goods and cables.

What is CPP film used for?

The health care and pharmaceutical industries use CPP films for packaging of drugs for extended periods of time since CPP films can protect against contamination. Application in other industries includes stand-up re-closable pouches, multi layered laminations, side-weld seal bags, flower and twist wraps.

Why is polypropylene used for food packaging?

Polypropylene. Polypropylene is an ideal food-safe plastic for production processes that require high heat. It can be found in products ranging from prescription bottles to garden tools and automotive products. While fairly stiff, polypropylene is not as brittle as other common food packaging plastics.

What are the properties of polyethylene?

PROPERTIES. Flexible, translucent/waxy, weatherproof, good low temperature toughness (to -60’C), easy to process by most methods, low cost, good chemical resistance.

How is polypropylene film made?

Polypropylene Films BOPP film is produced by a tubular process, in which a tubular bubble is inflated, or a tenter frame process, in which a thick extruded sheet is heated to its softening point (not to the melting point) and is mechanically stretched by 300–400%.

What is OPP polypropylene?

Flexible packaging plastic known as OPP and BOPP (oriented and biaxially oriented polypropylene) is a very shiny plastic, often perfectly clear or brightly coloured, and not stretchy at all.

What is CPP polymer?

CPP (Cast Unoriented Polypropylene) is a cost-effective, low density, high-performance transparent cast polypropylene film. CPP films are often seen as having optical clarity, high gloss, good seal strength, and machinability, and are resistant to tears and punctures.

What are cast polypropylene films?

Cast Polypropylene (CPP) is an un-oriented film which means it is more resistant to impact and low temperatures. CPP has increased in popularity in many traditional flexible packaging applications replacing polyethylene because it has higher clarity and gloss, better heat resistance and lay flat.

What are the advantages and disadvantages of polypropylene?

POLYPROPYLENE PROS AND CONS

  • It is a relatively inexpensive material.
  • It possesses high flexural strength because of its semi-crystalline nature.
  • It has a low coefficient of friction • It is very resistant to moisture.
  • It has good chemical resistance over a wide range of bases and acids.

Why plastic film is commonly used in food packaging?

Plastics are widely used for packaging because they are lightweight and require a small amount of energy to manufacture. In making beverages bottles, plastics can conveniently replace steel, glass, aluminium as a cost-effective alternative with little or no side effects.