FLAT YARN CLOTH LAMINATED SHEET

• Main Author: FUJIMURA KAZUMASA
• Format: Patent
• Language: English
• Published: 21.07.2011
• Subjects: FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TEXTILES; TRANSPORTING; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS

PROBLEM TO BE SOLVED: To provide a flat yarn cloth laminated sheet excelling in strength with low heat shrinkage and flexible and transparent with excellent adhesive property. SOLUTION: The flat yarn cloth laminated sheet is formed by laminating a metallocene-based propylene-ethylene block copolymer fulfilling (i)-(iii), on both sides of flat yarn cloth woven from composite tape yarn formed by laminating a surface layer of low melting point polypropylene with a melting peak temperature of 115-153°C, on both sides of an intermediate layer of high melting point polypropylene with a melting peak temperature of 155-175°C: (i) successively polymerizing 30-95 wt.% of a propylene-ethylene random copolymer component with 0.3-7 wt.% of ethylene content in a first process, and 70-5 wt.% of the propylene-ethylene random copolymer component containing 3-20 wt.% of much ethylene in a second process, (ii) having a melt flow rate of 0.1-30 g/10 min, and (iii) having a single peak below 0°C in a temperature-loss tangent curve. COPYRIGHT: (C)2011,JPO&INPIT