| Patents for B29C 31 - Handling, e.g. feeding of the material to be shaped (6,870) |
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| 10/20/1981 | US4295815 Guide skirt |
| 10/20/1981 | US4295774 Apparatus for automatically turning over and for storing sections of elastomeric material |
| 10/20/1981 | US4295573 Method of obtaining a seal upon the interior surface of a container closure and resulting product |
| 10/20/1981 | US4295439 Hand operated apparatus for applying a gasketing composition |
| 10/13/1981 | US4294792 Molded plastic parts, particularly spin-cast plastic parts for eyeglass frames |
| 10/07/1981 | EP0037219A1 Apparatus for melting and dispensing thermoplastic material |
| 10/07/1981 | EP0036876A1 A hand operated apparatus for applying a gasketing composition. |
| 10/06/1981 | US4293510 Molding, curing |
| 09/30/1981 | EP0036423A1 A machine for injection moulding or extruding plastic material available in packaged form. |
| 09/29/1981 | US4292014 Feed mechanism comprising an endless member configured as a double helix |
| 09/29/1981 | CA1109622A1 Guide rail extractor for molded plastic articles |
| 09/23/1981 | EP0036330A1 Process for continuously producing an aromatic polyimide film |
| 09/16/1981 | EP0035877A2 Centrifugal casting machine |
| 09/15/1981 | US4288965 Form-fill-seal packaging method and apparatus |
| 09/08/1981 | US4288468 Process for encapsulating electrical components by vortex sintering |
| 09/08/1981 | US4287847 Apparatus for distributing lining material in cap shells |
| 09/02/1981 | EP0034886A2 Process for the production of heterogeneous articles |
| 09/01/1981 | US4286882 Apparatus for the automatic, uniform drawing-in of elastomeric material into worm extruders |
| 08/25/1981 | US4285630 Method of automatically transferring a plurality of objects between two different supporting surfaces |
| 08/18/1981 | CA1107026A1 Rotational molding apparatus and process |
| 08/11/1981 | US4283363 Process for manufacture of plastic sheets |
| 08/11/1981 | US4282989 Device with a conically shaped housing and feeling for feeding plastics material to an extruder |
| 08/04/1981 | US4282277 Oriented, semi-crystalline polymer product and method and apparatus for producing such product |
| 08/04/1981 | US4281816 Automatic apparatus for molding a preform |
| 08/04/1981 | US4281492 Sectional construction strip, e.g. for the production of window frames |
| 07/28/1981 | US4280864 Apparatus and method for lining caps |
| 07/28/1981 | US4280626 Product separation and granulation system |
| 07/21/1981 | US4279855 Method for the casting of ultrathin polymer membranes |
| 07/21/1981 | US4279360 System for feeding two synthetic-resin components to a mold |
| 07/21/1981 | CA1105226A1 Method of forming a layer of material from a solution |
| 07/14/1981 | US4278624 Fluid film continuous processing method and apparatus |
| 07/08/1981 | EP0031673A2 Method of obtaining a seal upon the interior surface of a container closure |
| 07/07/1981 | US4277431 Method of dispensing metered charges of material |
| 06/30/1981 | US4276012 Mold isolator mechanism for centrifugal casting machine |
| 06/30/1981 | US4276010 Pipe beller with force determined temperature |
| 06/30/1981 | CA1103875A1 Molding method and molding machine |
| 06/24/1981 | EP0030827A1 Decorative emblem and method of manufacture |
| 06/23/1981 | CA1103401A1 Protective glove and related method of manufacture |
| 06/17/1981 | EP0030326A1 Method of manufacture of cast films |
| 06/16/1981 | US4273607 Apparatus for applying gasket-forming material |
| 06/16/1981 | US4273523 Sweep ell production apparatus |
| 06/10/1981 | EP0030027A1 Rotocasting process for producing rubbery reinforced sport balls and play balls |
| 06/09/1981 | US4272232 Particle blender |
| 05/26/1981 | CA1101898A1 Workpiece transfer device with four bar linkage featuring vacuum grippers and means changing lateral spacing of workpieces |
| 05/26/1981 | CA1101795A1 Method for manufacturing an embossed vinyl surface covering having a clear photopolymerized coating |
| 05/26/1981 | CA1101738A1 Method and apparatus for lining can ends |
| 05/20/1981 | EP0028806A2 Multiple casting head |
| 05/19/1981 | US4268475 Deformable membrane, ejection of air |
| 05/19/1981 | CA1101171A1 Film-forming head |
| 05/12/1981 | US4267080 Polyethylene composition for rotational molding |
| 05/12/1981 | US4266928 Filling device for introducing pre-foamed post-expandable thermoplastics into molds for the production of moldings |
| 05/12/1981 | US4266694 Convertible hopper mounting for injection molding machine |
| 05/05/1981 | CA1100399A1 Method of and device for fabricating plastic sleeves |
| 05/05/1981 | CA1100398A1 Process and apparatus for the production of a pipe- shaped hollow body especially of container tubes from a multilayer composite sheet material |
| 04/28/1981 | CA1099874A1 Method of and apparatus for the controlled feeding of a quantity of material into the intake opening of an extruder for processing rubber or plastics material |
| 04/21/1981 | US4262629 Apparatus for application of sealant to can lids |
| 04/16/1981 | WO1981000983A1 A machine for injection moulding or extruding plastic material a vailable in packaged form |
| 04/15/1981 | EP0027097A2 Device for feeding, and particularly for dosing a fibrous substance |
| 04/07/1981 | CA1098674A1 Method to reduce deposits of terephthalic acid on cooling rolls during sheet extrusion of amorphous polyethylene terephthalate |
| 04/02/1981 | WO1981000817A1 A hand operated apparatus for applying a gasketing composition |
| 04/01/1981 | EP0026028A1 Apparatus and process for extruding and quenching a thermoplastics film |
| 03/31/1981 | US4259377 Process of making protective gloves |
| 03/31/1981 | US4259277 Method and apparatus for the injection of additives into plastics material |
| 03/31/1981 | US4259137 Jacketing steel pipes by means of wrapping a ribbon helically around the pipes |
| 03/31/1981 | US4259056 Bottle-molding system |
| 03/31/1981 | US4259031 Method and apparatus for feeding a processing machine |
| 03/31/1981 | US4258917 Sport and play balls having good dimensional stability and tear strength |
| 03/25/1981 | EP0025541A2 Process and apparatus for producing tubular elements of polyurethane multi-component reactive materials |
| 03/24/1981 | US4257834 Solidified binder filling pattern |
| 03/17/1981 | US4256679 Process and device for filling cavities, particularly mold cavities, with a reactive, flowable mixture |
| 03/17/1981 | US4256444 Plant for injection molding of thermosetting epoxy plastics |
| 03/10/1981 | CA1097011A1 Method and apparatus for slush molding articles of footwear |
| 02/17/1981 | US4251574 Dip coating |
| 02/17/1981 | US4250798 Method of and device for fabricating plastic sleeves |
| 02/10/1981 | US4249881 Station for running foam-plastics material into shut molds |
| 02/10/1981 | US4249876 Control of plastics extrusion |
| 02/03/1981 | US4248819 Process for improving the processing properties of powdery polyolefins |
| 01/27/1981 | US4247508 Molding process |
| 01/27/1981 | US4247272 Method of and apparatus for the controlled feeding of a quantity of material into the intake opening of an extruder for processing rubber or plastics material |
| 01/27/1981 | CA1094278A1 Method and apparatus to form a bell end in a plastic pipe |
| 01/20/1981 | US4245585 Apparatus for recoating surfaces of a thermoplastic material |
| 12/30/1980 | CA1092319A1 Apparatus for precision electrostatic pinning |
| 12/23/1980 | US4240777 Feeding and mixing nozzle and method for mixing liquid resin mixtures and feeding it into molds by centrifugal force |
| 11/25/1980 | US4235579 Synthetic plastics article manufacturing system |
| 11/12/1980 | EP0018612A1 Method for making thermally insulating composite structural elements |
| 11/11/1980 | CA1089218A1 Apparatus for externally coating endless metal tubing |
| 11/11/1980 | CA1089168A1 Method and apparatus for extrusion coating filaments |
| 11/04/1980 | US4231987 Method of stripping a molded article |
| 11/04/1980 | US4231723 Metering and conveyor arrangement |
| 10/21/1980 | CA1087934A1 Web or coil coating and powder feed |
| 10/14/1980 | US4227816 Rotary processor |
| 10/14/1980 | US4227556 Method and apparatus for slush molding articles of footwear |
| 10/07/1980 | US4226577 Apparatus for injection molding of continuous slide fastener chain |
| 10/07/1980 | CA1087045A1 Plastic bearing materials |
| 10/07/1980 | CA1086911A1 Method of making a shaft seal |
| 09/16/1980 | US4222416 Apparatus for controllably dispensing a viscous resin and reactive hardener |
| 09/09/1980 | CA1085424A1 Core transfer apparatus for cast tires |
| 09/02/1980 | CA1084749A1 Roller |
| 08/26/1980 | US4219514 Method and apparatus for slush molding articles of footwear |
| 08/26/1980 | US4219317 Device for producing hollow molded members |