| Patents for B29C 57 - Shaping of tube ends, e.g. flanging, belling, closing; Apparatus therefor (3,110) |
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| 11/10/1981 | US4299349 Two-piece containers made from filled thermoplastic sheet material |
| 11/04/1981 | EP0039292A1 Sheet material which can be converted into a finished product by moulding, embossing or thermoforming, comprising reinforcing fibres and a powdery thermoplastic resin, and process for preparing said material |
| 11/03/1981 | US4298556 Method for matched die molding a fiber reinforced polyurethane foam molded product |
| 11/03/1981 | CA1111751A1 Plastic pipe |
| 11/03/1981 | CA1111631A1 Process and an apparatus for producing a multi- layered glass fiber sheet |
| 10/27/1981 | US4297306 Inserting rod into heated neck |
| 10/20/1981 | US4295907 Method of making glass fiber reinforced laminate |
| 10/20/1981 | CA1110817A1 Fibre reinforced plastic structures and method and apparatus for producing same |
| 10/06/1981 | CA1110121A1 Method of applying liquid material to elongated material and assembly for accomplishing this |
| 10/06/1981 | CA1110024A1 Process for manufacturing synthetic resin hose having a reinforcing member embedded therein and apparatus thereof |
| 09/29/1981 | US4292368 Process for making a connecting rod for controlling or transmitting efforts, and connecting rod thus obtained |
| 09/29/1981 | US4292270 Elbowed end, collapsing of heated die |
| 09/29/1981 | US4292105 Adding a water-soluble thickener to an aqueous dispersion of powder; coating uniformity |
| 09/23/1981 | EP0036184A2 Pipe building method and apparatus |
| 09/22/1981 | US4290994 Method of molding hollow bodies |
| 09/22/1981 | US4290992 Heat-shrinkable film tube with an internally ribbed closed end, and a method of making it |
| 09/16/1981 | EP0035974A1 Device for producing a glass fibre reinforced plastics granulate |
| 09/16/1981 | EP0035682A1 Process and apparatus for the thermal treatment of impregnated fabric webs |
| 09/16/1981 | EP0035628A2 Gudgeon pin |
| 09/15/1981 | US4289168 Method for making pipe of fabric impregnated with resin |
| 09/15/1981 | CA1108819A1 Method and mold for forming sheets having reduced surface imperfections |
| 09/03/1981 | WO1981002459A1 Method for joining plastics pipes |
| 09/01/1981 | US4286942 Apparatus for producing pneumatic tires |
| 09/01/1981 | CA1108071A1 Composite pipe having an integral bell end |
| 08/26/1981 | EP0034202A1 Apparatus for winding force transmitting elements made of fibre reinforced materials |
| 08/25/1981 | US4286030 Cured, cellulose fibers and thermoplastic fibers |
| 08/25/1981 | US4285904 Method and apparatus for sealing centrifuge tubes |
| 08/25/1981 | US4285749 Anaerobic curing of a partially-cured thermosetting resin-coated fibers by passing through a hot melted metal bath |
| 08/25/1981 | CA1107706A1 Method and apparatus for unwinding a roll of sheet molding compound |
| 08/18/1981 | US4284680 Multi-layered, needle punched, felt-like cushioning material and production method thereof |
| 08/12/1981 | EP0033638A1 Producing compression molded fibre reinforced plastics panel |
| 08/12/1981 | EP0033626A2 Aerosol container closures |
| 08/12/1981 | EP0033598A2 Split tank assembly with reinforcement in the region of a joint and method of making such a reinforced split tank assembly |
| 08/11/1981 | US4283312 For use in filament winding and reinforced rods, coatings |
| 08/04/1981 | US4281979 Apparatus to form a flat-topped rim on a thin-walled foam plastic container |
| 08/04/1981 | US4281859 Pipe joints |
| 07/29/1981 | EP0032858A1 Tridimensional annular structure |
| 07/28/1981 | US4280534 Plastics pipes having walls with lengthwise extending channels |
| 07/21/1981 | US4279853 Method of forming a socket end on a plastic pipe and a molding device for use of the method |
| 07/21/1981 | US4279585 Cup forming mandrel |
| 07/15/1981 | EP0031880A2 Method for producing a reinforced product |
| 07/08/1981 | EP0031747A1 Apparatus for the radial winding of a filament |
| 07/07/1981 | US4277231 Method and apparatus for pressure forming pipe bells |
| 07/07/1981 | CA1104732A1 Injection molding compositions |
| 07/07/1981 | CA1104315A1 Mixed fibrous mat and method for molding fiber- reinforced composite material |
| 06/30/1981 | US4276010 Pipe beller with force determined temperature |
| 06/30/1981 | CA1103876A1 Method and apparatus for closing tubes |
| 06/25/1981 | WO1981001681A1 Manufacture of molded articles of carbon fiber-reinforced thermoplastic resin |
| 06/24/1981 | EP0030931A1 Method of making work pieces, especially spectacle templates |
| 06/10/1981 | EP0029912A2 Mould-half, in particular laminating mould-half |
| 06/09/1981 | CA1102672A1 Production of reinforced plastic pipes |
| 05/26/1981 | US4269801 Method and device for forming a flange on a tubular element of a synthetic resin |
| 05/19/1981 | CA1101173A1 Method for the treatment of rigid plastic containers and an arrangement for the carrying out of the method |
| 05/15/1981 | EP0006855A4 Supply package for wet-impregnated multifilament roving. |
| 05/13/1981 | EP0028450A2 Manufacture of thermoplastics pipe |
| 05/12/1981 | US4267147 Curing strips of mat impregnated with a thermosetting resin on a mold outside an autoclase; aircraft; boats; swimming pools |
| 05/12/1981 | US4266926 Pipe belling with external fluid pressure |
| 05/12/1981 | CA1100843A1 Method and apparatus for preparing slurry |
| 05/06/1981 | EP0028066A2 A method for making a length of thermoplastics pipe by the radial expansion of a pipe blank within a circular cross-section mould |
| 05/06/1981 | EP0028065A2 Apparatus for use in the manufacture of thermoplastics pipe by the radial expansion of a pipe blank within a circular cross-section mould |
| 05/05/1981 | US4265691 Process for producing a multi-layered glass fiber sheet |
| 04/29/1981 | EP0027548A1 Process and apparatus for impregnating reinforcing materials with a resinous binding agent |
| 04/29/1981 | EP0027543A1 Method and apparatus for continuously manufacturing single or plural layer reinforced webs of thermo-setting plastics |
| 04/22/1981 | EP0027202A2 Process for preparing fibre-reinforced moulded articles |
| 04/22/1981 | EP0027191A1 Polyamide release film for sheet molding compound, sheet compound prepared therewith and process of making |
| 04/21/1981 | US4263249 Method for producing reinforced plastic tubular body having annular grooves, and mold therefor |
| 04/21/1981 | US4262518 Tube expander and method |
| 04/15/1981 | EP0027098A1 Method and device for making axially reinforced plastic pipes |
| 04/07/1981 | US4260445 Lamination, scattering fibers, two-step curing, thermosetting resin |
| 04/07/1981 | US4260265 Fiber-resin blending technique |
| 03/31/1981 | US4259382 Fiber reinforced composite shaft with metal connector sleeves secured by adhesive |
| 03/24/1981 | US4257835 Method of manufacture of material reinforced with a three-dimensional textile structure |
| 03/11/1981 | EP0024895A2 Method of manufacture of reinforced sheet plastics material and the production of moulded articles therefrom |
| 03/03/1981 | CA1096762A1 Method and apparatus for molding articles from fibrous material |
| 03/03/1981 | CA1096596A1 Filiform textile material |
| 02/24/1981 | CA1096125A1 Mold and method for shaping and curing reinforced plastic material |
| 02/17/1981 | CA1095786A1 Method for production of fiber reinforced resin structures |
| 02/11/1981 | EP0023581A1 Tube expander and method |
| 02/10/1981 | US4249977 Method for making close tolerance laminates |
| 02/03/1981 | US4248817 Method for the manufacture of workpieces in particular fan blades, complete fan rotors and other bodies |
| 02/03/1981 | CA1094768A1 Method of molding socket of plastic resin tube |
| 01/28/1981 | EP0022919A2 Method for the impregnation of tissues by resin injection |
| 01/27/1981 | US4247277 Cup bead or fill line former |
| 01/27/1981 | US4246732 Pole, in particular for electric lines |
| 01/27/1981 | CA1094278A1 Method and apparatus to form a bell end in a plastic pipe |
| 01/21/1981 | EP0022467A1 Method of making a drive shaft |
| 01/20/1981 | US4245976 Nozzle valve for in-the-mold coating apparatus |
| 01/13/1981 | US4244993 Method for making simulated marble and product of the method |
| 01/13/1981 | US4244990 Preimpregnation with urea resin |
| 01/07/1981 | EP0021660A1 Method and apparatus for producing an indentation in a tubular body |
| 01/07/1981 | EP0020767A1 Tubular membrane separator |
| 01/06/1981 | CA1092765A1 Silicone rubber enclosure element and method of using |
| 12/30/1980 | US4242306 Plastics |
| 12/30/1980 | US4242160 Method of winding a wind turbine blade using a filament reinforced mandrel |
| 12/30/1980 | US4241848 Container processing apparatus |
| 12/23/1980 | US4240470 Composite pipe having an integral bell end |
| 12/23/1980 | CA1091888A1 Pole and method and apparatus for its production |
| 12/16/1980 | US4239719 Method for continuous production of corrugated sheets |
| 12/16/1980 | US4239473 Mandrel with retractable segments |
| 12/10/1980 | EP0020248A1 Apparatus for moulding cylindrical pieces |