New ideas will make the future colored.
Plastic film is plastics products with thin film made in synthetic resins as main raw materials. It shows excellent function in food packaging application, hygiene application, electricity application, industrial application, etc., all of them are essential ones in our daily life. We hope to contribute to sustainable society, by pursuing functionality and convenience through our plastic film product. Our plastic film with clean, high function, and originality can form shape from new idea and design our earth and our future.
Plastic Films made by Ohishi Sangyo
Polystyrene film

Polystyrene resin is commodity in plastic industry and is used in applications such as food packaging, home appliances, styrene foam, and thermal insulation application.
Our polystyrene film, Styrofan® and Clearfan®, are thin films made in polystyrene resin.
The Styrofan® and Clearfan® have high transparency and excellent secondary process ability like printing and cutting. We have largest market share in the field of lamination process in food packaging application in Japanese market.
Applications
Packaging for food, wrapping bales in butadiene rubber, window in envelopes, labels and seals, etc.
Properties
Typical properties in representative grade (Not guaranteed values)
We can propose other suitable grades to your application.
Cast film


This is a cast film produced by the T-die method.
The embossing technique, which creates unevenness on film surface, is used to form films of viscous thermoplastic resins with soft and tacky feeling. We can create film with glossy mirror-like finishing using mirror- surface roll. The film has smooth surface and superior transparency.
Effect on embossing
- ● Design
Embossing patterns can be selected according to the application. For example, soft, silky texture can be expressed by embossing with crepe-weaving. - ● Easy-separation (Releasability)
Embossing reduces friction by reducing the contact area with the object, which contributes to improve easy-separation and anti- blocking performance.
Applications
Food packaging, sanitary materials, electronic materials, industrial materials, etc.
Manufacturing Process
Example of facilities
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We have clean room with multi-layer extruder. We can manufacture and supply our products keen to management in contamination under high-quality management system applied to medical and electricity applications which definitely require high-quality.
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The machine can extrude our plastic film with feeding or unwinding PET film or polyolefin films as a separator film. It is more effective for making thin films and viscous resins into films with separator. This function is installed in limited application in mass-production machine, whereas machine for making prototype is installed it as standard specification.