Thermoplastic sheet
申请公布号:GB1117527(A)
申请号:GB19650033736
申请日期:1965.08.06
申请公布日期:1968.06.19
发明人:KOMOLY THOMAS JOHN
分类号:B29C44/00;B29C47/06;B29C47/12;B29C53/22;B29C53/26;B29C69/02;B32B27/00
主分类号:B29C44/00
摘要:1,117,527. Corrugating thermoplastic sheet material; laminates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 29 July, 1966 [6 Aug., 1965], No. 33736/65. Headings B5A and B5N. A longitudinally corrugated sheet is given additional transverse corrugations or undulations by passing the sheet between two stations which are reciprocated relative to each other. In the embodiment shown in Fig. 1, a longitudinally corrugated sheet 1, from a fixed extruder 2, is passed between laterally reciprocating clamping members 9, located in a cooling bath 3, the resultant longitudinally corrugated and undulating sheet being drawn out of the bath over rollers 4. In the embodiment shown in Fig. 4, an extruded sheet is wound from roll 1, heated at 12, longitudinally corrugated between rolls 13, laterally corrugated by a vertically reciprocating bar 15 and finally cooled by air blasts at 17. In a third embodiment, see Figs. 6 and 7 (not shown), a longitudinally corrugated sheet is extruded from a transversely reciprocated die and flat cover sheets extruded on to it. The sheets can be made of polyethylene; polypropylene; poly-4-methylepentene-1; polyvinyl chloride; polymers and copolymers of styrene, e.g. styrene/maleic anhydride copolymers; polymethyl methacrylate; copolymers of methyl methacrylate with acrylic acid and alkyl acrylates; polyoxymethanes, polycarbonates; polyamides and polyesters.
METHOD AND DEVICE FOR DETECTING POSITION OF CUTTING EDGE OF MACHINE TOOL
FOCUSING OKAY OR NOT DISPLAY DEVICE OF AUTOMATIC FOCUSING CAMERA
APPARATUS FOR PREVENTING THE INCREASING AND DECREASING THE CORROSION OF SYSTEMS FOR COOLING WATER
METHOD OF OBTAINING OF PHENOLFORMALDEHYDE RESINE
COMPOSITION FOR TREATING OF TERIGENNE COLLECTORS
VALVE RELLAY OR CONTACTOR WITH PLASTIC BASE BODY
PROCEDIMIENTO PARA MEJORAR LAS PROPIEDADES DE TRANSFORMACION DE POLIETILENO EN POLVO
MEJORAS EN MAQUINAS PARA EL ENVASADO AUTOMATICO DE PRODUCTOS A GRANEL Y SIMILARES