Calender rollers and method for producing laminated sheet
OwnerIsao Hirose, Tomoo Yamaguchi +3inventors
InventorsIsao Hirose, Tomoo Yamaguchi, Yasunobu Ina, Shuzo Fujiwara, Kunihiko Kaita
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Abstract
A set of calender rollers is described, which comprises at least three rollers, for rolling a plastic material into a plastic material sheet and for laminating the plastic material sheet onto a base material sheet at a nip portion to be formed into a laminated plastic material sheet, wherein the nip portion is formed with a pair of nip rollers including a holding roller for holding the rolled plastic material sheet, and behind the nip portion, a release member for releasing the laminated plastic material sheet from the holding roller is arranged in proximity to or in contact with the holding roller.
Claims10
A set of calender rollers comprising at least three rollers, for rolling a plastic material into a plastic material sheet and for laminating said plastic material sheet onto a base material sheet at a nip portion to be formed into a laminated plastic material sheet, wherein
- said nip portion is formed with a pair of nip rollers including a holding roller for holding said rolled plastic material sheet, and behind said nip portion, a release member for releasing said laminated plastic material sheet from said holding roller is arranged in proximity to or in contact with said holding roller.
A method for producing a laminated sheet by laminating a plastic material sheet on a base material sheet using a set of calender rollers, wherein
- said set of calender rollers comprises at least three rollers, a nip portion is formed with a pair of nip rollers including a holding roller for holding a rolled plastic material sheet, and behind said nip portion, a release member is arranged in proximity to or in contact with said holding roller, and
- a plastic material is rolled into said plastic material sheet, then said plastic material sheet is laminated onto a base material sheet at said nip portion, and thereafter a plastic material sheet layer of said laminated sheet is released from said holding roller with said release member.
Dependencies are inferred from the claim text.