| Patents for B31C 3 - Forming paper tubes or pipes by feeding obliquely to the winding mandrel centre line (572) |
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| 11/03/1998 | CA2124700C Enhanced crush strength construction multi-grade paperboard tubes |
| 09/22/1998 | CA2126797C High spiral angle winding cores |
| 08/20/1998 | WO1998035825A1 A structural ply of a paperboard core, a paperboard core made thereof, and a method of improving the stiffness of a paperboard core |
| 08/12/1998 | EP0857568A2 Tubular container and methods and apparatus for manufacturing same |
| 08/12/1998 | EP0857567A2 Polymeric liner ply for tubular containers and methods and apparatus for manufacturing same |
| 06/25/1998 | WO1998026921A1 The method of manufacturing a pipe having bending capability and a pipe having bending capability |
| 06/25/1998 | DE19654119A1 Spiral winding machine for polygonal sleeves |
| 06/25/1998 | DE19654118A1 Spiral winding method for providing multi-cornered collapsible sleeve esp. of paper |
| 06/25/1998 | DE19654117A1 Spiral winding of polygonal dimensionally stable sleeves |
| 06/18/1998 | WO1998025825A1 Manufacture of an endless plastic pipe, and equipment required |
| 06/18/1998 | DE19654982A1 Wrapping pressed grass or straw in plastics sheeting |
| 06/04/1998 | DE19652054C1 Verfahren zur Herstellung eines endlosen Kunststoffschlauches A method for producing an endless plastic tube |
| 03/04/1998 | EP0596906B1 Sleeve-shaped packing container made of multi-layered material and process and device for making it |
| 02/26/1998 | WO1997027041A3 Process for production of tubes out of composite cardboard, device for carrying out the process and composite material used therein |
| 01/22/1998 | WO1998002297A1 Method and apparatus for enhancing seam uniformity in spirally wound tubes |
| 01/13/1998 | US5707328 Method and apparatus for manufacturing paper tube |
| 12/11/1997 | DE19622380A1 Method for making shell bodies |
| 11/11/1997 | US5685817 Arrangement for the scoring of continuously transported, flat workpieces to be folded along scored lines |
| 10/15/1997 | EP0801020A1 Winding core and method for its fabrication |
| 09/30/1997 | US5671897 Core for core wound paper products having preferred seam construction |
| 09/18/1997 | WO1997033745A1 Core and a method of manufacturing such |
| 09/12/1997 | WO1997032717A1 Tube-production device |
| 09/11/1997 | DE19707407A1 Vorrichtung zur Herstellung eines Röhrchens An apparatus for making a tube |
| 07/31/1997 | WO1997027041A2 Process for production of tubes out of composite cardboard, device for carrying out the process and composite material used therein |
| 07/31/1997 | DE19602892A1 Verfahren zur Herstellung von Wickelhülsen aus Kartonverbundmaterial, Vorrichtung zur Durchführung des Verfahrens und hierbei verwendetes Kartonverbundmaterial A process for the production of winding cores made of cardboard composite material, apparatus for performing the method and cardboard composite material used in this case |
| 07/23/1997 | EP0722380B1 Machine for producing cardboard or similar tubes, with means for cutting the tube into sections of predetermined lengths |
| 07/16/1997 | EP0740640A4 Yarn winding cores |
| 07/01/1997 | US5643166 Apparatus for making wood tubing |
| 06/17/1997 | US5639175 Threaded paper tube |
| 04/17/1997 | WO1997013695A1 Method and device for production of tubes |
| 04/16/1997 | EP0767756A1 Core for core wound paper products having preferred seam construction |
| 03/19/1997 | EP0565628B1 Container for refrigerated dough |
| 02/05/1997 | EP0756998A1 Easy-open container having an improved reinforcing and tear strip |
| 02/05/1997 | EP0756997A1 Easy-open container having directionally-oriented label tear |
| 01/14/1997 | US5593375 Continuous tubular box body production process, particularly for cardboard boxes |
| 01/08/1997 | EP0752308A2 Apparatus for scoring continuously moving flat blanks |
| 01/08/1997 | CN1139617A Equipment of continuous feeding flat piece for forming groove pattern by folding along groove line |
| 12/24/1996 | US5586963 Single-ply paperboard tube and method of forming same |
| 11/26/1996 | CA2075736C Easy-open container for refrigerated dough products and the like |
| 11/06/1996 | EP0740640A1 Yarn winding cores |
| 10/09/1996 | CN1133023A Machine for producing cardboard or similar tubes, with means for cutting the tube into sections of predetermined lengths |
| 08/25/1996 | CA2145125A1 Package unit with bulk packaging material and apparatus for producing same |
| 07/24/1996 | EP0722380A1 Machine for producing cardboard or similar tubes, with means for cutting the tube into sections of predetermined lengths |
| 04/09/1996 | US5505395 Multi-grade paperboard winding cores for yarns and films having enhanced resistance to inside diameter reduction |
| 03/06/1996 | EP0699518A2 Method of and apparatus for manufacturing paper tube |
| 03/05/1996 | US5495810 Corrugated cardboard tube and pallet using the same |
| 01/31/1996 | EP0694479A2 Container for refrigerated dough and method of forming a refrigerated dough product |
| 01/11/1996 | WO1996000692A1 Core for core wound paper products having preferred seam construction |
| 12/05/1995 | US5472154 High spiral angle winding cores |
| 11/21/1995 | US5468207 Method and apparatus of manufacturing a paint roller |
| 07/27/1995 | WO1995019930A1 Yarn winding cores |
| 06/21/1995 | CN2201240Y Pipeline shaper |
| 06/14/1995 | CN2200534Y Automatic make-up machine for card paper drum |
| 05/30/1995 | CA2091168C Container for refrigerated dough and method of forming a refrigerated dough product |
| 05/04/1995 | DE4336807A1 Process for the production of containers which can be broken down from a spiral wound sleeve |
| 04/20/1995 | WO1995010400A1 Machine for producing cardboard or similar tubes, with means for cutting the tube into sections of predetermined lengths |
| 04/20/1995 | WO1995010399A1 Machine for producing tubes continuously, with independent operation of the cutting unit |
| 02/28/1995 | US5393582 Enhanced crush strength construction multi-grade paperboard tubes |
| 02/15/1995 | CN2189526Y Roll-making machine for production of firecrakers |
| 01/04/1995 | EP0631963A1 High spiral angle winding cores |
| 12/21/1994 | EP0629557A1 Corrugated cardboard tube and pallet using the same |
| 12/07/1994 | EP0627306A1 Enhanced crush strength construction multi-grade paperboard tubes |
| 11/29/1994 | US5368671 Paper tube for photosensitive materials |
| 10/12/1994 | EP0567580B1 Method for fabricating a tube by rolling a metal strip glued to a cardboard band |
| 09/15/1994 | WO1994020281A1 Continuous tubular box body production method, particularly for cardboard boxes |
| 09/13/1994 | CA2134643A1 Method for the continuous fabrication of tubular bodies, especially for cardboard boxes |
| 09/07/1994 | EP0613849A1 A core covering for winding rolls of film and paper |
| 06/23/1994 | DE4242547A1 Device for prodn. of spiral winding casing |
| 05/18/1994 | EP0596906A1 Sleeve-shaped packing container made of multi-layered material and process and device for making it |
| 10/20/1993 | EP0565628A1 Container for refrigerated dough and method of forming a refrigerated dough product. |
| 10/12/1993 | US5251809 Easy-open container for refrigerated dough products and the like |
| 08/03/1993 | US5232429 Method and apparatus for making a continuous tube of flexible sheet material |
| 07/08/1993 | DE4242435A1 Ribbed plastic flexible tube for waste gas extn. |
| 06/29/1993 | US5223066 Tape wrapping offset device |
| 06/23/1993 | EP0547569A2 Method for manufacturing a flexible pipe, machine for carrying out this method and pipe obtained |
| 02/17/1993 | EP0527647A2 Easy-open container for refrigerated dough products and the like |
| 02/10/1993 | CN1068791A Casing-like packaging container of multilayer material and process and device for manufacturing such packaging container |
| 02/04/1993 | WO1993001994A1 Sleeve-shaped packing container made of multi-layered material and process and device for making it |
| 01/27/1993 | EP0524514A1 Multi-layered tubular shaped packaging container and method and apparatus for the manufacturing of such a container |
| 01/20/1993 | EP0523433A1 Method of manufacturing a cylindrically shaped packaging container |
| 12/02/1992 | EP0516488A2 Method of and apparatus for the manufacture of paperboard tubes having controlled outside diameter |
| 12/02/1992 | EP0515952A2 Method for manufacturing a formwork for shuttering a pillar |
| 11/26/1992 | WO1992012057A3 Container for refrigerated dough and method of forming a refrigerated dough product |
| 08/26/1992 | EP0500242A2 A method of making a continuous tube of flexible sheet material |
| 08/06/1992 | WO1992012902A1 Method for fabricating a tube by rolling a metal strip glued to a cardboard band |
| 08/05/1992 | CN2111828U Winding shaped material of spiral winding shaping tube |
| 07/08/1992 | WO1992012057A2 Container for refrigerated dough and method of forming a refrigerated dough product |
| 07/01/1992 | CN2108616U Spiral paper tube machine |
| 05/27/1992 | CN1061374A Compound paper pipe and its production method |
| 04/21/1992 | US5106356 Method and apparatus for the manufacture of paperboard tubes having controlled outside diameter |
| 03/24/1992 | US5098362 Spiral tube making methods and apparatus including splice rejection |
| 01/28/1992 | US5084284 Container for refrigerated dough and method of forming a refrigerated dough product |
| 01/22/1992 | CN1015312B Apparatus for producing tube |
| 11/20/1991 | CN2088931U Full automatic paper tube forming machine |
| 11/06/1991 | CN2088032U Paper pipe winder |
| 10/22/1991 | US5059164 Spiral tube winding methods and apparatus including ply break sensing |
| 09/18/1991 | EP0447129A2 Spiral tube winding methods and apparatus |
| 09/18/1991 | EP0447127A2 Spiral tube making methods and apparatus |
| 07/09/1991 | US5030188 Spiral tube making methods and apparatus including splice rejection |
| 06/26/1991 | EP0434496A1 Device for preserving the planarity of a cardboard band between two successive elements of a winding machine |