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1. 发明授权

US3694116A Apparatus for the production of foamed resins 失效
标题翻译：用于生产泡沫树脂的装置
公开(公告)号：US3694116A
公开(公告)日：1972-09-26
申请号：US3694116D
申请日：1970-08-17
申请人： MONSANTO CHEMICALS
发明人： MCCOY JOHN GERALD , FOSTER WILLIAM REES
IPC分类号： B29C44/46 , B29C44/50 , B29F3/04
CPC分类号： B29C44/468 , B29C44/505 , B29L2007/00
摘要： Die assemblies and processes for extruding a foamable thermoplastic polyvinylaromatic resin through a rectangular die orifice into a zone of lower pressure such that foaming of the resin occurs as it moves through the zone, said zone being defined by a pair of opposing concave surfaces maintained at a temperature lower than the extrusion temperature and curved so that they substantially conform to the corresponding surfaces of the freely expanding resin without exerting a substantial compressive force thereon. The die assemblies and processes are particularly useful for the production of low density foamed boards having smooth surfaces.

2. 发明专利

GB1248627A CORRUGATED BUILDING SHEET MATERIALS 未知
公开(公告)号：GB1248627A
公开(公告)日：1971-10-06
申请号：GB1942969
申请日：1969-04-16
申请人： MONSANTO CHEMICALS
发明人： FOSTER WILLIAM REES , MCCOY JOHN GERALD
IPC分类号： B29C53/24 , E04C2/32
摘要： 1,248,627. Corrugated laminates. MONSANTO CHEMICALS Ltd. 18 March, 1970 [16 April, 1969], No. 19429/69. Heading B5N. A corrugated material comprises a corrugated layer of extruded foamed resin laminated to a relatively rigid corrugated layer with the peaks of the formed layer extending into corresponding valleys of the rigid layer so that the two layers are in contact over at least 50% of their area. Many formed resins are specified, polystyrene being preferred. The rigid corrugated layer may be of polyvinylchloride, asbestos cement, aluminium, iron or steel. The laminate may comprise three layers, e.g. of corrugated galvanized iron, corrugated foamed polystyrene and corrugated asbestos sheet, or of corrugated foamed extruded resin between two layers of corrugated galvanized iron.

3. 发明专利

GB1195279A Production of Foamed Resins 未知
公开(公告)号：GB1195279A
公开(公告)日：1970-06-17
申请号：GB5003767
申请日：1967-11-03
申请人： MONSANTO CHEMICALS
发明人： MCCOY JOHN GERALD , FOSTER WILLIAM REES
IPC分类号： B29C44/50
摘要： 1,195,279. Extruding foamed resin boards. MONSANTO CHEMICALS Ltd. 1 Oct., 1968 [3 Nov., 1967], No. 50037/67. Addition to 1,089,562. Heading B5A. [Also in Division C3] An extruded foamed resin board is prepared by extruding a foamable thermoplastic polyvinylaromatic resin through a slit die orifice 3, narrowed by a steel strip 4, into a zone of lower pressure defined by a pair of opposed concave curved surfaces 6, 7 maintained at a temperature below the extrusion temperature (that is to say, the temperature of the unfoamed resin at the die orifice), such that the foaming of the resin occurs as it moves through the zone and the curvature of the concave surfaces being such that they contact corresponding convex surfaces of the expanding and foaming resin. The slit die orifice preferably has a gap of 0À005 to 0À03 inch and a land of 0À07 to 0À2 inch. The cross-section of the concave surfaces is preferably an arc of a circle e.g. of radius # to 2 ¢ inches. The greatest distance apart of the concave surfaces is preferably 10 to 100 times the gap of the die orifice. The concave surfaces may be succeeded by a pair of flat surfaces 13, 14 diverging from each other along the direction of extrusion. The extruding resin may be supported by a series of rollers 16, 17 from the point of maximum expansion. Side pieces may limit the expansion along the length of the die slit. Passages 12 and 15 allow the circulation of cooling water.

4. 发明专利

GB1284766A SHAPING FOAMED THERMOPLASTIC RESIN SHEETS 未知
公开(公告)号：GB1284766A
公开(公告)日：1972-08-09
申请号：GB3656069
申请日：1969-07-21
申请人： MONSANTO CHEMICALS
发明人： MCCOY JOHN GERALD , FOSTER WILLIAM REES
IPC分类号： C08J9/34
摘要： 1284766 Moulding extruded foamed sheet MONSANTO CHEMICALS Ltd 25 June 1970 [21 July 1969] 36560/69 Heading B5A [Also in Division C3] A shaped foamed sheet is made by extruding a sheet of foamed thermoplastic resin, cooling the sheet until a solidified surface skin covers the still-plastic interior of the sheet and the surface skin is then heated, before the interior has solidified, to render the skin plastic and the sheet is shaped. The resin may be polystyrene. The sheet may be made by extruding a mixture of resin and a blowing agent e.g. methyl chloride. The surface skin may be heated with a radiant heater. The sheet may be shaped by passage between corrugated water-cooled rollers or by being vacuum formed into seed trays.

5. 发明专利

GB1166937A Improvements in or relating to The Production Of Foamed Resins 未知
公开(公告)号：GB1166937A
公开(公告)日：1969-10-15
申请号：GB2330367
申请日：1967-05-19
申请人： MONSANTO CHEMICALS
发明人： MCCOY JOHN GERALD , FOSTER WILLIAM REES
IPC分类号： B29C44/46 , B29C44/50
摘要： 1,166,937. Extruding foamed resins. MONSANTO CHEMICALS Ltd. 3 April, 1968 [19 May, 1967], No. 23303/67. Heading B5A. [Also in Division C3] A foamed resin board is made by extruding a foamable, thermoplastic polyvinylaromatic resin through a rectangular die orifice into a zone of lower pressure defined by a pair of opposing concave surfaces maintained at a temperature below the extrusion temperature (i.e. temperature of the unfoamed resin at the die orifice) so that the resin foams in the zone, and wherein the surfaces are shaped so that they do not exert any substantial pressure on the foaming resin. The zone defining surfaces (which may initially comprise arcs of circles) reach their greatest separation where the foamed resin has fully expanded and thereafter extend parallel to each other. The parallel section may comprise movable belts, driven by contact with the foamed polymer. The die used may be as specified in British Patents 1,034,120, 1,084,000, 1,098,408 or 1,159,920, and the lower pressure zone is preferably cooled to a temperature 60-105‹ C. below that of the extrusion temperature by water cooling of concave surfaces. The maximum separation of the zone defining surfaces is preferably 1À2 to 4 times the height of the die nozzles producing a board between 1À5 and 4 inches thick of density 0À9 to 1À5 1bs. per cubic ft. Many suitable resins and blowing agents are described; the preferred resin being polystyrene.

6. 发明专利

GB1294606A LAMINATES 未知
公开(公告)号：GB1294606A
公开(公告)日：1972-11-01
申请号：GB2445570
申请日：1970-05-20
申请人： MONSANTO CHEMICALS
发明人： SKINNER STANLEY JOHN , MCCOY JOHN GERALD
IPC分类号： B32B5/32
摘要： 1294606 Foam laminates MONSANTO CHEMICALS Ltd 3 May 1971 [20 May 1970] 24455/70 Heading B5N A laminate suitable as an insulating lining for walls and partitions or as a ceiling board comprises a sheet of foamed resin of low density, i.e. 4 lbs. per cubic foot or less laminated to a sheet of substantially uncompressed foamed resin of high density, i.e. 5 lbs. per cubic foot or more. A second sheet of high density foamed resin may be laminated to the other side of the low density sheet. Suitable resins are polyurethane, polystyrene, high impact styrene polymers which have been modified by the incorporation (either during or after polymerization) of a natural or synthetic rubber, styrene/ acrylonitrile or acrylonitrile/butadiene/styrene copolymers, phenolic or urea/formaldehyde resins, unplasticized polyvinyl chloride, polypropylene and linear polyethylene. The resin sheets preferably contain fire retardants and may be made by extrusion, by moulding foamable resin beads or by casting from a mixture of chemical reactants. The sheets may be bonded together by an adhesive, e.g. epoxy resin, synthetic latex, waterglass or bitumen or by the application of heat and pressure. The foamed resin sheets, particularly the high density sheet preferably of a substantially closed cell structure and the high density sheet may also have a skin of substantially non-foamed resin on one of the sides thereof. One or both of the sheets may be coloured and the high density sheet may be embossed or impressed with a decorative design.

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