# US 8,541,075 B2 · Glass-containing resin molded product > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,541,075 B2 - Document ID: US8541075B2 - Status: Granted - Kind: B2 - Application number: 12/993,212 - Filed: 2009-07-30 - Published: 2012-04-12 - Granted: 2013-09-24 - Earliest claimed: 2009-07-30 - Applicants: Kenji Nakamura - Inventors: Kenji Nakamura - Web page: https://patentgrep.com/patent/US8541075B2 ## CPC - B29C 70/64: the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporating in the surface by force - B29C 45/0013: {using fillers dispersed in the moulding material, e.g. metal particles} - C08K 7/20: Glass - B29C 48/022: {characterised by the choice of material} - B29C 48/09: Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels - B29C 48/12: Articles with an irregular circumference when viewed in cross-section, e.g. window profiles - B29K 2023/06: {PE, i.e. polyethylene} - B29K 2023/12: {PP, i.e. polypropylene} - B29K 2067/00: Use of polyesters {or derivatives thereof}, as moulding material - B29K 2067/003: {PET, i.e. poylethylene terephthalate} - B29K 2077/00: Use of {PA, i.e.} polyamides, e.g. polyesteramides {or derivatives thereof}, as moulding material - B29K 2105/16: Fillers - B29K 2509/08: Glass - Y10T 428/131: Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.] - Y10T 428/1314: Contains fabric, fiber particle, or filament made of glass, ceramic, or sintered, fused, fired, or calcined metal oxide, or metal carbide or other inorganic compound [e.g., fiber glass, mineral fiber, sand, etc.] - Y10T 428/24479: including variation in thickness - Y10T 428/268: Monolayer with structurally defined element - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Provide a glass-containing resin molded product having no skin layer formed on its surface and free from sink marks, warping and other forms of deformation, where such glass-containing resin molded product is characterized in that it is made of one type of resin selected from the group that includes polyethylene resin, polypropylene resin, polyethylene terephthalate resin and polyamide resin, that it contains solid, spherical glass beads with an average particle size of 10 to 40 μm and the glass blending ratio of these solid, spherical glass beads is 40 to 70 percent by weight, and that in these ranges no skin layer is formed on the surface of such glass-containing resin molded product when measured by the laser Raman method. ## Claims ### Claim 1 A glass-containing resin molded product formed by molding in contact with dies a glass-containing resin produced by melting and kneading glass-containing molding pellets each constituted by a thermoplastic resin containing solid, spherical glass beads; said glass-containing resin molded product being characterized in that the solid, spherical glass beads having an average particle size of 10 to 40 μm are contained at a glass blending ratio of 40 to 70 percent by weight type of resin constituting the thermoplastic resin selected from the group consisting of polyethylene resin, polypropylene resin, polyethylene terephthalate resin and polyamide resin, and no skin layer is formed on the surface of said glass-containing resin molded product at a glass blending ratio of 40 percent by weight or more as measured by the laser Raman spectroscopy. ### Claim 2 (depends on 1) A glass-containing resin molded product according to claim 1, characterized in that sink marks, warping and flow marks are not generated on the front side of said glass-containing resin molded product. ### Claim 3 (depends on 2) A glass-containing resin molded product according to claim 2, characterized in that the spherical beads are made of E glass or silica glass. ### Claim 4 (depends on 3) A glass-containing resin molded product according to claim 3, characterized in that the dies are injection molding dies, profile extrusion molding dies or blow molding dies. ### Claim 5 (depends on 1) A glass-containing resin molded product according to claim 1, characterized in that said glass-containing resin molded product is used for cosmetic containers, cosmetic implements, chemical containers, food containers, tableware, trays, tiles, bathtubs, kitchen/bath products, toiletry, automobile parts, electronic parts or construction materials. ### Claim 6 A glass-containing resin molded product formed by molding in contact with dies a glass-containing resin produced by melting and kneading glass-containing molding pellets each constituted by a thermoplastic resin containing solid, spherical glass beads; said glass-containing resin molded product being characterized in that the solid, spherical glass beads having an average particle size of 10 to 40 μm are contained at a glass blending ratio of 40 to 70 percent by weight in one type of resin constituting the thermoplastic resin selected from the group consisting of polyethylene resin, polypropylene resin, polyethylene terephthalate resin and polyamide resin, and the heat conductivity improvement index of said glass-containing resin molded product is 1.52 or more and the spherical glass beads are present on the surface of said glass-containing resin molded product. ### Claim 7 (depends on 6) A glass-containing resin molded product according to claim 6, characterized in that sink marks, warping and flow marks are not generated on the front side of said glass-containing resin molded product. ### Claim 8 (depends on 7) A glass-containing resin molded product according to claim 7, characterized in that the front side of said glass-containing resin molded product comprises a number of distributed convex shapes. ### Claim 9 (depends on 8) A glass-containing resin molded product according to claim 8, characterized in that the spherical glass beads are made of E glass or silica glass. ### Claim 10 (depends on 9) A glass-containing resin molded product according to claim 9, characterized in that the dies are injection molding dies, profile extrusion molding dies or blow molding dies. ### Claim 11 (depends on 10) A glass-containing resin molded product according to claim 10, characterized in that as the glass blending ratio increases, the heat conductivity improvement index of said glass-containing resin molded product improves gradually according to Formula (1) below: y=0.0132x+0.9951 (1) (x: glass blending ratio; y: heat conductivity improvement index). ### Claim 12 (depends on 6) A glass-containing resin molded product according to claim 6, characterized in that said glass-containing resin molded product is used for cosmetic containers, cosmetic implements, chemical containers, food containers, tableware, trays, tiles, bathtubs, kitchen/bath products, toiletry, automobile parts, electronic parts or construction materials. ### Claim 13 A glass-containing resin molded product formed by molding in contact with dies a glass-containing resin produced by melting and kneading glass-containing molding pellets each constituted by a thermoplastic resin containing solid, spherical glass beads; said glass-containing resin molded product being characterized in that E glass or silica glass constituting the solid, spherical glass beads having an average particle size of 10 to 40 μm is contained at a glass blending ratio of 40 to 70 percent by weight in one type of resin constituting the thermoplastic resin selected from the group consisting of polyethylene resin, polypropylene resin, polyethylene terephthalate resin and polyamide resin, and the spherical glass beads are present on the surface of said glass-containing resin molded product and the front side of said glass-containing resin molded product comprises a number of distributed convex shapes. ### Claim 14 (depends on 13) A glass-containing resin molded product according to claim 13, characterized in that sink marks, warping and flow marks are not generated on the front side of said glass-containing resin molded product. ### Claim 15 (depends on 14) A glass-containing resin molded product according to claim 14, characterized in that the dies are injection molding dies, profile extrusion molding dies or blow molding dies. ### Claim 16 (depends on 13) A glass-containing resin molded product according to claim 13, characterized in that said glass-containing resin molded product is used for cosmetic containers, cosmetic implements, chemical containers, food containers, tableware, trays, tiles, bathtubs, kitchen/bath products, toiletry, automobile parts, electronic parts or construction materials. ### Claim 17 (depends on 2) A glass-containing resin molded product according to claim 2, characterized in that said glass-containing resin molded product is used for cosmetic containers, cosmetic implements, chemical containers, food containers, tableware, trays, tiles, bathtubs, kitchen/bath products, toiletry, automobile parts, electronic parts or construction materials. ### Claim 18 (depends on 3) A glass-containing resin molded product according to claim 3, characterized in that said glass-containing resin molded product is used for cosmetic containers, cosmetic implements, chemical containers, food containers, tableware, trays, tiles, bathtubs, kitchen/bath products, toiletry, automobile parts, electronic parts or construction materials. ### Claim 19 (depends on 4) A glass-containing resin molded product according to claim 4, characterized in that said glass-containing resin molded product is used for cosmetic containers, cosmetic implements, chemical containers, food containers, tableware, trays, tiles, bathtubs, kitchen/bath products, toiletry, automobile parts, electronic parts or construction materials.