Molding device and molding method
AssigneeSumitomo Bakelite Co., Ltd.
InventorsKazuo Noda, Takafumi Sumiyoshi
Life of this patent
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Abstract
A molding device for molding a resin composition into a sheet shape by pressurizing the resin composition has a pair of rollers arranged parallel to one another. Each of the rollers has a columnar or cylindrical core portion and an outer layer provided on an outer periphery of the core portion. The outer layer is constituted of the ceramic material. A thickness of the outer layer is in the range of 0.2 to 100 nm. Further, an arithmetic mean deviation of a profile Ra of an outer peripheral surface of each of the rollers defined by JIS B 0601 is in the range of 0 to 2 μm.
Claims11
1-12. (canceled)
A molding device for molding a kneaded composition into a sheet shape by pressurizing the kneaded composition, the molding device comprising:
- a kneading apparatus for kneading a resin composition to obtain the kneaded composition, the kneading apparatus having:
- a discharge passage for discharging the kneaded composition;
- and
- a degassing apparatus for degassing the kneaded composition and discharging a degassed and kneaded composition, the degassing apparatus provided in the middle of the discharge passage;
- and
- a pair of rollers for molding the degassed and kneaded composition into the sheet shape by pressurizing the degassed and kneaded composition between the rollers, the pair of the rollers provided at a downstream side of the discharge passage and arranged parallel to one another,
- wherein at least an outer peripheral surface of each of the rollers is constituted of a ceramic material.
A method for molding a kneaded composition into a sheet shape using a molding device, the molding device having:
- a kneading apparatus for kneading a resin composition to obtain the kneaded composition, the kneading apparatus having a discharge passage for discharging the kneaded composition and a degassing apparatus for degassing the kneaded composition and discharging a degassed and kneaded composition, the degassing apparatus provided in the middle of the discharge passage;
- and
- a pair of rollers for molding the degassed and kneaded composition into the sheet shape by pressurizing the degassed and kneaded composition between the rollers, the pair of the rollers provided at a downstream side of the discharge passage and arranged parallel to one another, the method comprising:
- degassing the kneaded composition by using the kneading apparatus of the molding device;
- discharging the degassed and kneaded composition using the kneading apparatus;
- and
- molding the degassed and kneaded composition into the sheet shape using the pair of the rollers;
- wherein at least an outer peripheral surface of each of the rollers is constituted of a ceramic material.
Dependencies are inferred from the claim text.