| Patent application number | Description | Published |
|---|
| 20100078849 | PROCESS FOR PRODUCING THERMOPLASTIC RESIN FILM - The present invention provides a process for producing a thermoplastic resin film, comprising: a feeding step of feeding a molten resin containing a thermoplastic resin from a feeding device; a heating step of heating the molten resin from a discharge opening of the feeding device to a nip portion between a first compression surface and a second compression surface that are included in a compression apparatus by using a heating apparatus; and a film formation step of continuously compressing the heated molten resin between the first compression surface and the second compression surface to form a film, wherein a pressure applied to the molten resin by the compression apparatus is between 20 MPa or more and 500 MPa or less. | 04-01-2010 |
| 20100078850 | PROCESS FOR PRODUCING THERMOPLASTIC RESIN FILM - A process for producing a thermoplastic resin film, the process comprises the feeding step of feeding a molten resin containing a thermoplastic resin from a feeding device; and the film formation step of continuously compressing the molten resin between a first compression surface and a second compression surface that are included in a compression apparatus to form a film; wherein a shielding member which shields the molten resin from a flow of external air prevents the molten resin from being affected by a flow of external air at least from a discharge opening of the feeding device to the nip portion between the first compression surface and the second compression surface, and the pressure applied to the molten resin by the compression apparatus is between 20 MPa or more and 500 MPa or less. | 04-01-2010 |
| 20100207292 | PROCESS FOR PRODUCING THERMOPLASTIC RESIN FILM - According to a process for producing a thermoplastic resin film according to one aspect of the present invention, a molten resin, while the molten resin is discharged from a die and thereafter lands onto a cooling roller, is uniformly heated in a direction of a flow by a heater. Thereby, a thermoplastic resin film having very slight thickness unevenness in a longitudinal direction can be formed. Moreover, according to the process for producing a thermoplastic resin film, heating by the heater can reduce a viscosity of the molten resin at the time of landing, and can suppress generation of retardation at the time of landing. | 08-19-2010 |
