JP2008540879A5 - - Google Patents

Claims (19)

(I) a thermoplastic polymer, and (ii) multi-wall sheet structure of extruded thermoplastic comprising at least two flat rows walls, each wall having first and second surfaces , those walls are spaced apart from each other, and at least one of the walls, the shape of the waveform, one or surfaces of more waveforms or have a combination of them, their these walls extrusion direction, A sheet structure separated from each other by a ridge covering the length of the sheet. The sheet structure of claim 1, comprising a first wall and a second wall , each wall having an inner surface and an outer surface, wherein the first wall has a corrugated shape. The sheet structure according to claim 2, wherein the second wall has a corrugated shape. The sheet structure of claim 1 including a first wall and a second wall , each wall having an inner surface and an outer surface, wherein the first wall has a corrugated outer surface. The sheet structure of claim 4, wherein the first wall has a corrugated inner surface. The sheet structure of claim 4, wherein the second wall has a corrugated outer surface. The sheet structure of claim 5, wherein the second wall has a corrugated outer surface. The sheet structure of claim 7, wherein the second wall has a corrugated inner surface. The sheet structure of claim 2, wherein one or more of the surfaces are corrugated. The sheet structure of claim 3, wherein one or more of the surfaces are corrugated. The waveform is 0 . The sheet structure according to claim 2 or 3, defined by a sine wave having a pitch of 1 mm to 50 mm. The waveform is 0 . The sheet structure according to claim 5, 6, 7, or 8, defined by a sine wave having a pitch of 1 mm to 50 mm. The wall and surface waveforms are defined by a sine wave, and the pitch of the waveform wall sine wave is 0 . 1 mm to 50 mm, and the pitch of the sine wave on the corrugated surface is 0 . The sheet structure according to claim 9 or 10, which is 01 mm to 10 mm. The sheet structure according to claim 1, having a thickness of 2 mm to 100 mm. The sheet structure of claim 1 comprising three or more walls. The sheet structure according to claim 1, wherein the thermoplastic polymer is polycarbonate , polyethylene terephthalate , glycol-modified polyethylene terephthalate or polymethyl methacrylate . The sheet structure according to claim 1, wherein the thermoplastic polymer is polycarbonate . The sheet structure of claim 1, wherein the thermoplastic polymer comprises one or more of an ultraviolet absorber, a heat stabilizer, a colorant, a dye, a processing aid, a lubricant, a filler, or a reinforcing aid. Abrasion / scratch resistance, chemical resistance, ultraviolet (UV) resistance, reduced light scattering, reduced light reflection, reduced dust accumulation, reduced condensation, antibacterials, protection from discoloration, protection from cloud formation or from cracks The sheet structure of claim 1, further comprising a laminated or coextruded layer of one or more thermoplastic or thermoset resins to provide protection.