Patent US2811589A successfully refreshed from Google Patents.
Patent EP0326408A2 successfully refreshed from Google Patents.
EP0326408A2
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EP
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Multilayered molding and method of manufacturing the same
Assignee: Mitsui Chemicals Inc
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Filing: 1989-01-27
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Granted: —
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Expires: 2009-01-27
Abstract
Abstract A multilayered molding comprises a base molding which is made of a synthetic resin and on which is provided a surface layer comprising: (1) an outer layer formed by a thermoplastic elastomer comprising a polyolefin resin and an ethylene-α-olefin copolymer rubber; (2) an intermediate foamed layer made of flexible foamed synthetic resin material; and (3) a protection film layer sandwiched between the said base molding body and the said layer (2). This molding may be manufactured by (i) preheating a sheet or film comprising layers (1) to (3), (ii) attracting and bringing the sheet or film into contact with the inner surface of the cavity of a mold with the said outer layer (3) positioned to confront the inner surface of the cavity of the mold, (iii) injection molding fluidized and plasticized synthetic resin into the cavity, and (iv) clamping the mold either before or after the injection molding. A multilayer molding from which layers (2) and (3) are absent may be similarly obtained.
Inventors
- 👤 Akira C/O Mitsui Petrochemical Ind. Ltd. Uchiyama
- 👤 Naoaki C/O Mitsui Petrochemical Ind. Ltd. Jimbo
- 👤 Shizuo C/O Mitsui Petrochemical Ind. Ltd. Simizu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 14:58
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B29; B29C; B29C45/00; B29C45/14; B29C45/14778; B29C45/14811; B29C45/16; B32B25/00; B32B25/04; B32B25/08; B32B27/00; B32B27/06; B32B27/065; B32B27/08; B32B27/32; B29C45/14836; B29C2045/14844; B29C45/1418
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
71 words
A multilayered molding comprising a molding body which is made of a synthetic resin and on which is provided a surface layer comprising: (1) an outer layer formed by a thermoplastic elastomer comprising a polyolefin resin and an ethylene-α-olefin copolymer rubber; (2) an intermediate foamed layer made of flexible foamed synthetic resin material; and (3) a protection film layer sandwiched between the said base molding body and the said layer (2).
Claim 2
Dependent Claim
71 words
A multilayered molding comprising a molding body which is made of a synthetic resin and on which is provided a surface layer comprising: (1) an outer layer formed by a thermoplastic elastomer comprising a polyolefin resin and an ethylene-α-olefin copolymer rubber; (2) an intermediate foamed layer made of flexible foamed synthetic resin material; and (3) a protection film layer sandwiched between the said base molding body and the said layer (2).
Claim 3
Dependent Claim
35 words
A molding according to Claim 1, wherein the thermoplastic elastomer of the outer layer comprises the polyolefin resin and the ethylene-α-olefin copolymer rubber, which is crosslinked partially, in a weight ratio of 90:10 to 10:90.
Claim 4
Dependent Claim
26 words
A molding according to Claim 1 or 2, wherein the polyolefin resin comprises low density polyethylene and polypropylene in a weight ratio of 10:90 t0 70:30.
Claim 5
Dependent Claim
41 words
A molding according to any one of the preceding claims, wherein the ethylene-α-olefin copolymer to be cross-linked comprises ethylene and an α-olefin in a molar ratio of 50:50 to 90:10, and has a Moonie viscosity ML1+4 (121°C) of at least 20.
Claim 6
Dependent Claim
19 words
A molding according to any one of the preceding claims, wherein the surface of the outer layer is embossed.
Claim 7
Dependent Claim
20 words
A molding according to any one of the preceding claims, wherein the base molding body comprises a synthetic foamed material.
Claim 8
Dependent Claim
86 words
A method of manufacturing a multilayered molding, which comprises: (i) preheating a sheet or film comprising layers (1) to (3) as defined in Claim 1, (ii) attracting and bringing the sheet or film into contact with the inner surface of the cavity of a mold with the said outer layer (3) positioned to confront the inner surface of the cavity of the mold, (iii) injection molding fluidized and plasticized synthetic resin into the cavity, and (iv) clamping the mold either before or after the injection molding.
Claim 9
Dependent Claim
64 words
A method according to Claim 7, which comprises vacuum molding the said sheet or film in a mold for vacuum molding, fitting the thus-molded sheet or film into the cavity of a separate mold for molding, injecting the synthetic resin in a fluidized and plasticized state into the cavity of the mold, and clamping the mold either before or after injecting the synthetic resin.
Claim 10
Dependent Claim
98 words
A method according to Claim 7 or 8, wherein the said sheet or film comprising layers (1) to (3) has been prepared by extruding the said thermoplastic elastomer film or sheet for layer (1); layering the molten film or sheet thus extruded on a flexible foamed sheet for layer (2) which has been individually extruded to form thereby a double layered sheet, extruding a protection film for layer (3) and layering the said protection film on the foamed sheet side of the said double layered sheet, and taking up the thus-layered combined film on a pair of rollers.
Claim 11
Dependent Claim
44 words
A method according to Claim 9, wherein either one of the pair of rollers is an embossing roller and the surface of the said outer layer (1) of the sheet or film is arranged to be brought into contact with the said embossing roller.
Claim 12
Independent Claim
94 words
A method of manufacturing a multilayered molding comprising a thermoplastic elastomer comprising a polyolefin resin and an ethylene-α-olein copolymer rubber layered on the surface of a base molding body made of a synthetic resin, which method comprises: (a) preheating a sheet or film of the said thermoplastic elastomer; (b) attracting and bringing the sheet or film into contact with the inner surface of the cavity of a mold; (c) introducing fluidized and plasticized synthetic resin into the said cavity; and (d) clamping the mold either before or after introducing the resin into the cavity.
Claim 13
Independent Claim
94 words
A method of manufacturing a multilayered molding comprising a thermoplastic elastomer comprising a polyolefin resin and an ethylene-α-olein copolymer rubber layered on the surface of a base molding body made of a synthetic resin, which method comprises: (a) preheating a sheet or film of the said thermoplastic elastomer; (b) attracting and bringing the sheet or film into contact with the inner surface of the cavity of a mold; (c) introducing fluidized and plasticized synthetic resin into the said cavity; and (d) clamping the mold either before or after introducing the resin into the cavity.
References Cited (Backward Citations)
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