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Thermoplastic resin film manufacturing method and cyclic olefin resin film

A technology of thermoplastic resin and manufacturing method, which is applied in the field of cyclic olefin resin film, can solve the problems of uneven and large optical film quality, light transmittance reduction, influence, etc., and achieves suppression of heat-degraded foreign matter and high light transmittance Effect

Active Publication Date: 2018-08-31
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, in the case of an optical film, foreign matter contained in the film becomes a point defect, and the quality of the optical film is greatly affected by the decrease in light transmission or the increase in unevenness caused by the point defect.

Method used

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  • Thermoplastic resin film manufacturing method and cyclic olefin resin film
  • Thermoplastic resin film manufacturing method and cyclic olefin resin film
  • Thermoplastic resin film manufacturing method and cyclic olefin resin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～ Embodiment 7

[0189] Cyclic olefin resin (ARTON (registered trademark) manufactured by JSR CORPORATION, specific gravity ρ: 1.08 (g / cm 3 ), glass transition temperature Tg: 138°C), by changing (changing the temperature of the extruder supply section A) the compression ratio, the supply section groove depth Hf, the barrel inner diameter D or Q of the extruder as shown in Table 1 / N, melt extrusion was carried out by adjusting so as to maintain the predetermined resin transfer efficiency in the supply section. In addition, the screw of the extruder is a full-flight type, and the screw flight angle is 17.7°.

Embodiment 8

[0191] In Example 1, melt extrusion was implemented in the same manner as in Example 1 except that the raw material resin was changed to polycarbonate.

Embodiment 1-a～ Embodiment 1-i

[0193] In Example 1, melt extrusion was carried out in the same manner as in Example 1, except that the oxygen concentration at the supply port of the extruder, the input resin temperature, the use of a vacuum hopper, and the screw or screw temperature were changed. In addition, the screw flight angle in the supply section of the double-flight type in Example 1-a to Example 1-i was 17.7°.

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Abstract

A thermoplastic resin film manufacturing method comprising a step for supplying and melting raw resin using an extruding machine comprising a supply unit, a compression unit and a measurement unit under the condition satisfying 0.75 <= supply unit resin transport efficiency <= 1.0, and melt-extruding the molten resin extruded from an extrusion port in a film shape from a die, and the application thereof. W denotes a screw flight pitch, Hf denotes a groove depth in the supply unit, D denotes the inside diameter of a cylinder, psi denotes a screw flight angle, Q denotes the extrusion amount of molten resin, Rho denotes the specific gravity of raw resin, and N denotes the number of rotations of a screw per minute.

Description

technical field [0001] The invention relates to a manufacturing method of a thermoplastic resin film and a cyclic olefin resin film. Background technique [0002] Thermoplastic resin films are used in various applications such as optical films and films for protecting the back of solar cells. For example, as an optical film used in a liquid crystal display device or the like, a cellulose-based resin film such as a cellulose acylate film is used. [0003] A cellulose-based resin film such as a cellulose acylate film is formed by melting the cellulose-based resin with an extruder and extruding it to a die, discharging the molten resin in a sheet form from the die, cooling and solidifying the film. [0004] In addition, in recent years, cyclic olefin resin films have attracted attention as films that have little change in optical characteristics in response to changes in environmental temperature and humidity, and studies have been conducted on the use of cyclic olefin resins ...

Claims

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Application Information

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IPC IPC(8): B29C47/14B29C47/40B29C47/82B29C47/84B29C48/305B29C48/355B29C48/395B29C48/92
CPCB29C48/83B29C48/305B29C48/84B29C48/08B29C48/92B29C48/82B29C48/30B29C48/40B29C2948/92476B29C2948/92409
Inventor 中川洋亮山田晃
Owner FUJIFILM CORP
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