TH28858B - High-capacity mixing plates and preparation methods. - Google Patents

Abstract

DC60 (27/02/46) A multilayer composite sheet consisting of a shrinkable layer discontinuously bonded to an aggregate layer by welding separated by a specified distance, where the shrinkable layer can shrink and simultaneously integrate the aggregate layer during bonding. The process for preparing multilayer composite sheets involves discontinuously bonding a shrinkable layer to an aggregate layer by welding separated by a specified distance, resulting in a shrinkable layer that can shrink while simultaneously integrating the aggregate layer during bonding. Typically, the aggregate layer consists of rows of non-woven fibers or a mesh composed of embedded strands. A multilayer composite sheet consisting of a shrinkable layer discontinuously bonded to an aggregate layer by welding separated by a specified distance, where the shrinkable layer can shrink and simultaneously integrate the aggregate layer during bonding. The process for preparing multilayer composite sheets involves discontinuously bonding a shrinkable layer to an aggregate layer by welding separated by a specified distance, resulting in a shrinkable layer that can shrink while simultaneously integrating the aggregate layer during bonding. Typically, the aggregate layer consists of rows of non-woven fibers or a mesh composed of embedded strands.

Claims (30)

1. A method for forming multi-layer composite sheets consisting of a process of discontinuous welding of at least one reassemblable layer to a shrinkable layer with rows of welds separated by a distance of at least 5 mm in at least one direction, and shrinkage of the welded multi-layer sheet by at least 10% in at least one direction so that the reassemblable layer forms a tight-fitting section during the weld. The tightly-fitted multi-layer composite sheet has a thickness of at least 3 mm and a capacity of at least 50 cc/g, in which the shrinkable layer consists of rows of inner lines, and the shrinkage process consists of heating the welded multi-layer composite sheet. 2. A method consistent with claim 1 where the distance between close welds is at least 10 mm and the thickness of the tightly bonded multi-layer composite sheet is between approximately 6 mm and 30 mm. 3. A method consistent with claim 1 where the distance between close welds is between approximately 5 mm and approximately 25 mm. 4. A method consistent with either claim 1 or 2 where a row of fibers consists of a row of yarns. 5. A method consistent with the claim where a row of fibers consists of warp threads of the same size as the fibers. 6. A method consistent with claim 1 where the fibers in a row are selected from a group consisting of partially arranged yarns and yarns composed of multiple composite fibers with hidden twists. 7. A method consistent with claim 6 where the fibers in a row consist of yarns of an elastic combination. 8. A method consistent with claim 6 where the row fibers consist of partially arranged poly(ethylene terephthalate) yarns. 9. A method consistent with claim 6 where the fibers in a row consist of multi-component fibers with interlocking strands; multi-component fibers consisting of bonded polymer components and unbonded polymer components. 10. A method consistent with claim 9 is used whereby the stretched polymer component is selected from a group consisting of poly(ethylenetetraphthalate), poly(cyclohexyl 1,4-dimethyltetraphthalate), its copolymers, and copolymers of ethylenetetraphthalate and sodium salts of ethylene sulfoisopthaate, and the unstretched polymer component is selected from a group consisting of poly(trimethyltetraphthalate), poly(tetramethyltetraphthalate), poly(propylene dynaphthalate), poly(propylene bibenzoate), its copolymers with ethylene sodium sulfoisopthaate and polyester ether. 11. A method consistent with claim 10 where the stretched polymer component is poly(ethylene phthalate) and the unstretched polymer component is poly(trimethyl phthalate). 12. The method consistent with claim 1, a shrinkable layer, is a non-tube-like mesh composed of multi-component fibers with hidden spiral ripples. 13. A method consistent with claim 12 that a multi-component fiber consists of a stretched polymer component and a non-stretched polymer component. 14. A method consistent with claim 13 is used in which the stretched polymer component is selected from a group consisting of poly(ethylenetetraphthalate), poly(cyclohexyl 1,4-dimethyltetraphthalate), its copolymers, and copolymers of ethylenetetraphthalate and sodium salts of ethylenesulfoisophthaate, and the non-stretched polymer component is selected from a group consisting of poly(trimethyltetraphthalate), poly(tetramethyltetraphthalate), poly(propylene dynaphthalate), poly(propylene bibenzoate), its copolymers with ethylene sodiumsulfoisophthaate, and polyester ethers. 15. A method consistent with claim 14 where the stretched polymer component is poly(ethylenetetraphthalate), and the unstretched polymer component is poly(trimethyltetraphthalate). 16. A method consistent with claim 1 in which the collectible layer is selected from a group consisting of non-woven mesh made into a sheet, non-woven mesh laid horizontally in the air, non-woven mesh welded together, and film. 17. The method consistent with claim 16 in which the assembled layer can be formed is a non-woven welded mesh selected from a group consisting of hydraulically stitched mesh, mechanically stitched mesh, heat-welded mesh, and adhesive-welded mesh. 18. A method consistent with Claim 1 in which the layer can be assembled involves a thermoplastic binder that is activated during the shrinkage phase. 19. A method consistent with claim 18 in which the thermoplastic binder consists of powder. 20. A method consistent with claim 18 where the thermoplastic interlayer consists of a polymeric sheath-core polymer in which the sheath is composed of a polymer with a lower melting point than the core polymer. 21. The method consistent with claim 20 is that the row of welds is selected from a group consisting of rows of spot welds and rows of weld seams. 22. A method consistent with claim 21 where the weld row is formed by a welding method selected from a group consisting of thermal welding and ultrasonic welding. 23. A method consistent with claim 1 where the heating procedure includes a wet finishing step with hot water. 24. A method consistent with claim 1 in which the heating step is performed under conditions of free contraction. 25. A method consistent with claim 23 in which the wet finishing procedure includes a dyeing step. 26. A method consistent with claim 1 where the distance between the joints is varied across the surface of the composite sheet. 27. A method consistent with claim 1 where welded multilayer sheets shrink at least in one direction by at least 20% during the shrinkage process. 28. A method consistent with Claim 1 where the shrinkable layer is spliced and welded between at least two collapsible layers prior to the shrinkage procedure. 29. The method consistent with claim 28 in which the layer can be integrated is a non-woven mesh. 30. A method consistent with claim 1 where the collectible layer has a base weight of less than approximately 33.9 g/m2.