Plastic Blow Mold Plastic Cap Mold Films made of oriented PP (OPP), particularly biaxially oriented PP (BOPP), are receiving much attention from food packagers because of their exceptional moisture and oxygen barrier properties and improved economics over metal foil packaging. They are useful for enclosing such products as corn chips, cookies, crackers and pet foods. Unlike foils, the OPP films are transparent and can be designed for useful configurations such as stand-up pouches. OPP films can be metallized for further improvement in barrier properties. Such films are already in use for packaging such foods as powdered beverages, nutritional drinks, soup, rice and dried cheeses. Some grades of metallized OPP films are heat sealable. Others are intended as the inner layers of coextruded packaging laminates containing other polymers such as plain OPP or PET.
High-performance fluoropolymer films include such materials as PTFE, polyvinyl fluoride (PVF), polyvinylidene fluoride (PVdF), ETFE and PCTFE. As a class, fluoropolymer films combine excellent chemical resistance and dielectric properties with heat resistance and moisture impermeability.
Fluoropolymer films are used in the chemical industry to line tanks and in the electronics industry in circuit board laminates and wire insulation. In plastics processing, fluoropolymer films perform well as release agents in the fabrication of industrial composites. Fluoropolymers are used in the packaging of medical and pharmaceutical products and as a barrier for protecting sensitive electronics, such as those found in sonar buoys.
Polycarbonate film is noted for its high clarity, heat resistance and dimensional stability. Its many applications include reverse screen printing, pressure sensitive nameplates and membrane switch panels.
Various electronic devices, including timers and filters, employ wound Polycarbonate film capacitors, which have a very wide temperature range. In signs and other outdoor graphics applications, Polycarbonate films offer exceptional resistance to moisture and sunlight. Another use of Polycarbonate film is for in-mould labels for cell phones and automobile components. Such labels are easy to customize to provide product differentiation.
Polyimide films, best known for their ability to withstand heat, retain their dielectric properties at temperatures as high as 240 degrees C. The films can be used to insulate the windings of large coils for motors. They allow wave soldering of flexible circuits without distortion. The films are also used in combination with inorganic insulating tapes to impart flame resistance to high-performance cables.
Films made of PPEK display resistance to high temperatures, chemicals, solvents, wear, hydrolysis, fire and smoke. Usage temperatures for the films can be as high as 260 degrees C. They have similar applications to Polyimide films.For more information,please visit http://www.bossgoo.com
