Ads
related to: polyester plastic film rolls
Search results
Results From The WOW.Com Content Network
A tube of extruded film being blown to expand. Plastic films are usually thermoplastics and are formed by melting for forming the film. [2] Cast – Plastics extrusion can cast film which is cooled or quenched then wound up on a roll. Extruded film can be stretched, thinned, or oriented in one or two directions.
Metallized boPET film, 32 layers of ~14 μm thickness each. BoPET (biaxially oriented polyethylene terephthalate) is a polyester film made from stretched polyethylene terephthalate (PET) and is used for its high tensile strength, [1] chemical stability, [1] dimensional stability, [2] transparency [1] reflectivity, and electrical insulation. [1]
Because polyester is an inert and stable plastic, it does not possess the same deterioration concerns as celluloid films. Polyester can be stored at room temperature and does not need cold storage for preservation. Polyester is also used as an archival enclosure option for materials, such as Mylar and Melinex brand products.
E. I. DuPont de Nemours in Delaware, United States, first produced Dacron (PET fiber) in 1950 and used the trademark Mylar (boPET film) in June 1951 and received registration of it in 1952. [27] [28] It is still the best-known name used for polyester film. The current owner of the trademark is DuPont Teijin Films. [29]
From 1895, Eastman supplied their motion picture roll film in rolls of 65 feet, while Blair's rolls were 75 feet. If longer lengths were needed, the unexposed negative rolls could be cemented in a darkroom, but this was largely undesirable by most narrative filmmakers.
Acetate can also be spliced with film cement, while polyester can only be spliced with tape or an ultrasonic splicer, so polyester is hard to edit. Acetate film does not burn under intense heat, but rather melts, causing a bubbling burn-out effect — this can be seen simulated in films such as Persona (1966), Two-Lane Blacktop (1971) , The ...
Ads
related to: polyester plastic film rolls