MANUFACTURE OF SOUNDPROOF MATERIAL

• Main Authors: SAKAGUCHI TAKAYA, NISHIHARA YOSHIO, OKADA YOSHITAKA
• Format: Patent
• Language: English
• Published: 02.12.1998
• Edition: 6
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SOUND-PRODUCING DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a novel method for efficiently manufacturing a soundproof material with excellent operability by simplifying the steps as compared with a conventional manufacturing method. SOLUTION: The method for manufacturing a soundproof material comprises the steps of coating a feeding releasable endless belt with sound insulation composition containing 10 to 50 wt.% of amorphous poly-α-olefin heated to be melted so that a melt viscosity at 190 deg.C of amorphous poly-α-olefin becomes 200 to 20,000 centipoise and 50 to 90 wt.% of inorganic filler, laminating a sound absorber on the coated surface, then cooling the obtained laminate preferably to 40 deg.C or lower to solidify the composition, and releasing it from the belt.