# US 2021/0277540 A1 · Method for Cutting Composite Membrane Material with Elastic Membrane Material and Composite Filament with Elastic Filament > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0277540 A1 - Document ID: US20210277540A1 - Status: Published application - Kind: A1 - Application number: 17/191,142 - Filed: 2021-03-03 - Published: 2021-09-09 - Earliest claimed: 2020-03-06 - Assignees: Chance Line Industrial Co., Ltd. - Applicants: Chance Line Industrial Co., Ltd. - Inventors: Ming-Hsien YAO - Web page: https://patentgrep.com/patent/US20210277540A1 ## CPC - D02G 3/32: Elastic yarns or threads {; Production of plied or cored yarns, one of which is elastic} - D01D 5/426: {by cutting films} - D01F 8/10: with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent - D02G 3/404: {Yarns or threads coated with polymeric solutions} - D02G 3/406: {where the polymeric solution is removable at a later stage, e.g. by washing} - D03D 15/292: Conjugate, i.e. bi- or multicomponent, fibres or filaments - D03D 15/56: elastic - D06M 11/05: with water, e.g. steam; with heavy water - D06M 2101/24: Polymers or copolymers of alkenylalcohols or esters thereof; Polymers or copolymers of alkenylethers, acetals or ketones - D10B 2321/06: polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals - D10B 2401/061: elastic - D10B 2401/062: stiff, shape retention - D02G: CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS - D01D: MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS - D01F: CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS - D03D: WOVEN FABRICS; METHODS OF WEAVING; LOOMS - D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS - D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES ## Abstract The invention provides a method for cutting a composite membrane material, firstly, manufacturing a composite membrane material, the composite membrane material is formed by combining an elastic membrane material with at least one shaping membrane, the elastic membrane material has stretchability and elasticity; the shaping membrane is capable of dissolving in water, and a rigidity thereof is greater than that of the elastic membrane material, and a ductility thereof is lower than that of the elastic membrane material; and cutting the composite membrane material into a plurality of composite filaments with a cutting device, and each of the composite filaments comprises an elastic filament and at least one shaping filament. The composite filament can be used by textile machinery to make textiles. Dissolving the shaping filament in the composite filament is capable of obtaining the elastic filament. ## Claims ### Claim 1 A method for cutting a composite membrane material with an elastic membrane material comprising: manufacturing a composite membrane material, the composite membrane material being formed by combining an elastic membrane material with at least one shaping membrane, the elastic membrane material being made of high-molecular material with stretchability and elasticity; the shaping membrane being made of high-molecular polymer, having solubility and being capable of dissolving in water; a rigidity of the shaping membrane being greater than that of the elastic membrane material, and a ductility of the shaping membrane being lower than that of the elastic membrane material; and cutting the elastic membrane material and the shaping membrane of the composite membrane material with a cutting device, and cutting the composite membrane material into a plurality of composite filaments, each of the composite filaments being a composite with at least two layer structures, comprising an elastic filament and at least one shaping filament, the elastic filament being formed by being cut out from the elastic membrane material; and the shaping filament being formed by being cut out from the shaping membrane. ### Claim 2 (depends on 1) The cutting method as claimed in claim 1, wherein a material of the shaping membrane is polyvinyl alcohol. ### Claim 3 (depends on 1) The cutting method as claimed in claim 1, wherein the composite membrane material is conveyed to the cutting device in a continuous conveying manner for cutting; each of the composite filaments after cutting is wound into a roll, and the elastic filament and the shaping filament of each of the composite filaments are kept combined with each other. ### Claim 4 (depends on 1) The cutting method as claimed in claim 1, wherein the composite filament is placed in water to dissolve the shaping filament in the water and to retain the elastic filament. ### Claim 5 (depends on 2) The cutting method as claimed in claim 2, wherein the composite filament is placed in water to dissolve the shaping filament in the water and to retain the elastic filament. ### Claim 6 (depends on 3) The cutting method as claimed in claim 3, wherein the composite filament is placed in water to dissolve the shaping filament in the water and to retain the elastic filament. ### Claim 7 A composite filament with an elastic filament, the cross-section of the composite filament is rectangular, wherein: the composite filament is a filament with a continuous length, the cross-section thereof is a layered structure with at least two layers of an upper layer and a lower layer, the composite filament comprises an elastic filament and at least one shaping filament, the elastic filament is made of high-molecular material, has stretchability and elasticity; the shaping filament is made of high-molecular material, has solubility and is capable of dissolving in water; a rigidity of the shaping filament is greater than that of the elastic filament, and a ductility of the shaping filament is lower than that of the elastic filament. ### Claim 8 (depends on 7) The composite filament as claimed in claim 7, wherein a dissolution temperature of the shaping filament is lower than a melting point of the elastic filament. ### Claim 9 (depends on 7) The composite filament as claimed in claim 7, wherein a material of the shaping filament is polyvinyl alcohol. ### Claim 10 (depends on 7) The composite filament as claimed in claim 7, wherein two sides of the composite filament are cut planes. ### Claim 11 (depends on 7) The composite filament as claimed in claim 7, wherein the composite filament can be used in textile machines, sewing machines, or embroidery machines. ### Claim 12 (depends on 7) The composite filament as claimed in claim 7, wherein the composite filament is placed in water to dissolve the shaping filament in the water and to retain the elastic filament. ### Claim 13 (depends on 8) The composite filament as claimed in claim 8, wherein the composite filament is placed in water to dissolve the shaping filament in the water and to retain the elastic filament. ### Claim 14 (depends on 9) The composite filament as claimed in claim 9, wherein the composite filament is placed in water to dissolve the shaping filament in the water and to retain the elastic filament. ### Claim 15 (depends on 10) The composite filament as claimed in claim 10, wherein the composite filament is placed in water to dissolve the shaping filament in the water and to retain the elastic filament.