Device for forming thin film member and method of forming thin film member
AssigneeToshiba Kikai Kabushiki Kaisha
InventorsKoji Mizunuma, Tadamasa Furuya, Tomonori Yamaguchi
Life of this patent
Estimating the term…
Abstract
A thin film member forming device includes a reference roll fixedly disposed while being rotatably supported by a first bearing member, a movable roll disposed movably with respect to the reference roll while being rotatably supported by a second bearing member, a roll gap adjusting mechanism which adjusts a gap between the reference roll and the movable roll and a roll opening mechanism which expands the gap. The roll gap adjusting mechanism adds a load in a direction to narrow the gap to the second bearing member, and the roll opening mechanism adds a load in a direction to expand the gap to the second bearing member.
Claims15
A thin film member forming device for forming a thin film member by sandwiching a molten resin supplied from a T die between two rolls, the device comprising:
- a base;
- a first bearing member fixed to the base;
- a reference roll fixedly disposed while being rotatably supported by the first bearing member;
- a guide member provided in the base;
- a second bearing member guided by the guide member;
- a movable roll disposed movably with respect to the reference roll while being rotatably supported by the second bearing member;
- a roll gap adjusting mechanism which is supported by the base, is connected to the second bearing member, adds a load to the second bearing member, and adjusts a gap between the reference roll and the movable roll;
- a roll opening mechanism which is supported by the base, is connected to the second bearing member, adds a load to the second bearing member, and expands the gap,
- the reference roll and the movable roll being arranged in such a manner that rotation center axes thereof are parallel to each other and an angle θ made between a plane passing both the rotation center axes and a horizontal plane falls within a range of:
- 0°≤θ≤90°, and
- the roll gap adjusting mechanism pressing the molten resin via the movable roll by adding a load to the second bearing member in a direction to narrow the gap while the roll opening mechanism adds a load to the second bearing member in a direction to expand the gap.
A thin film member forming method of forming a thin film member by sandwiching a molten resin supplied from a T die between two rolls, the method comprising:
- fixedly arranging a reference roll while being rotatably supported by a first bearing member fixed to a base;
- arranging a movable roll to be movable with respect to the reference roll while being rotatably supported by a second bearing member guided by a guide member provided in the base, in such a manner that a rotation central axis of the movable roll is parallel to a rotation central axis of the reference roll, and an angle θ made between a plane passing both of the rotation center axes and a horizontal plane falls within a range of:
- 0°≤θ≤90°;
- and
- adding a load in a direction to narrow a gap between the reference roll and the movable roll to the second bearing member by a roll gap adjusting mechanism supported by the base and connected to the second bearing member while a load in a direction to expand the gap is added to the second bearing member by a roll opening mechanism supported by the base and connected to the second bearing member, according to a pressing force towards the reference roll produced by self weights of the movable roll and the second bearing member.
Dependencies are inferred from the claim text.