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| Number | Title | Issue Date |
| 7857027 | Apparatus for manufacturing single faced corrugated pasteboard The present invention relates to a single faced corrugated pasteboard manufacturing apparatus. To considerably reduce running costs and insufficient bonding of a single faced corrugated pasteboard sheet and occurrence of wrinkles due to an enlargement in machine wid... | 12/28/2010 |
| 7220331 | Device for connecting a multilayered web by ultrasound A device for connecting a multilayered material band by ultrasound in a first gap between a first ultrasonic device and at least one first responder is provided. A first, flat material band is introduced through a first feeding device and a second flat material band... | 05/22/2007 |
| 7059051 | Fluted roll and method for the manufacture thereof A method of manufacturing fluted rolls, in particular for corrugating machines, comprises the steps of providing a fluted-roll blank which has a central longitudinal axis and a longitudinal direction that is parallel thereto and a surface; providing a grinding devic... | 06/13/2006 |
| 6926656 | Method and apparatus for fabricating corrugated composite stiffeners An apparatus and method for fabricating corrugated composite stiffeners provides a base tool having grooves formed in an outer surface and a roller having a rotating shaft and a removable, lobed, elastomeric member surrounding the shaft. The lobes of the elastomeric... | 08/09/2005 |
| 6921450 | Soft contact roll for a single facer A soft contact roll is mounted immediately downstream of the generator roll in a single facer to press the freshly glued single face web against the surface of the heated fluted bonding roll with a light load uniformly distributed across the full width of the web. T... | 07/26/2005 |
| 6913570 | Method and apparatus for producing a composite structural panel with a folded material core A folded core structure is produced by embossing fold lines into a flat planar material web, initiating folds along the fold lines on the upper and lower surfaces of the material web, proceeding with the formation of the folds along the fold lines to deform the mate... | 07/05/2005 |
| 6827784 | Corrugating method and means A system for adding a desired additive to a corrugating adhesive. ... | 12/07/2004 |
| 6782933 | Single facer quick change corrugating rolls A corrugator single facer of the type utilizing a large diameter bonding roll and a small diameter corrugating roll provides quick roll change capability by mounting three large diameter bonding rolls on a rotatable turret and carrying corresponding small diameter c... | 08/31/2004 |
| 6692602 | Machine for producing a corrugated cardboard sheet and process for calibrating the glue gap of such a machine A machine for producing corrugated cardboard incorporates a corrugating roll and a glue roll extending parallel to the former in such a way that a glue gap is formed between the two. To adjust the glue gap, the bearing of the glue roll is pushed against t... | 02/17/2004 |
| 6623416 | Single facer with resilient small diameter corrugating roll A single facer for corrugated paperboard of the type using a very large diameter fluted bonding roll and a much smaller diameter fluted corrugating roll which engages the bonding roll to provide a corrugating nip. The small diameter corrugating roll is ma... | 09/23/2003 |
| 6602375 | Single facer drive apparatus A corrugator single facer of the type utilizing a large diameter bonding and corrugating roll and a small diameter corrugating roll is driven without direct drive applied to either corrugating roll. Instead, the pressure belt arrangement which supports th... | 08/05/2003 |
| 6478066 | Corrugator unit, particularly for sheets or webs of paper, or similar A corrugator unit, particularly for sheets or webs of paper, or similar, of the type comprising at least two rolls (1, 2), having a toothed or corrugated surface (101, 202), and being mutually engaged and pushed against each other by a predetermined press... | 11/12/2002 |
| 6311754 | Single facer with small corrugating roll supported by independently mounted backing rolls A single facer utilizes a pair of corrugating rolls, one of which is of a substantially smaller diameter. The small diameter corrugating roll is captured by a series of backing roll arrangements spaced along the axis of the smaller corrugating roll, each ... | 11/06/2001 |
| 6289960 | Apparatus having a wrapped roll for making a single faced corrugated board A single facer containing a first corrugating roll, a second corrugating roll and a gluing mechanism further has an introducing device which is disposed to oppose the second corrugating roll across the liner feed line and pressed against the second corrug... | 09/18/2001 |
| 6170549 | Single facer with resilient small diameter corrugating roll A single facer for corrugated paperboard of the type using a very large diameter fluted bonding roll and a much smaller diameter fluted corrugating roll which engages the bonding roll to provide a corrugating nip. The small diameter corrugating roll is ma... | 01/09/2001 |
| 6171427 | High speed corrugator single facer with steam injection A method and apparatus for producing a single face corrugated web in which a steam cloud is injected between the corrugated medium web and the liner web directly at the line along which the webs converge. This type of steam injection allows faster corruga... | 01/09/2001 |
| 6155320 | Method and apparatus for injecting steam at a single facer bonding nip An apparatus and related method for forming a single face paperboard web are disclosed. The apparatus of the present invention includes a forming corrugating roll for corrugating flutes on a medium web and a carrier corrugating roll operably connected to ... | 12/05/2000 |
| 6155319 | Unit for joining paper sheets together in corrugated board manufacturing equipment A unit for joining paper sheets together in corrugated board manufacturing equipment comprises at least one toothed or corrugated roll (1), which is mounted in such a way as to rotate about its axis; means (5, 6) for feeding and pressing at least one flat... | 12/05/2000 |
| 6153037 | Method and apparatus for producing multi-ply corrugated paperboard Method and apparatus for producing a multi-ply corrugated paperboard (105) by repeatedly laminating multi-ply corrugated mediums (102, 103) with different pitches and widths between top and bottom liners is disclosed. This invention thins the paperboard a... | 11/28/2000 |
| 6149751 | Low pressure single facer A method and apparatus for producing a single face corrugated web from an adhesively bonded liner and medium web without the use of a pressure roll nip where the liner web is joined to the medium web. A heated bonding roll with a fluted outer surface carr... | 11/21/2000 |
| 6143112 | Method and apparatus for producing single face corrugated web The present invention relates to an apparatus for producing single face corrugated web, which comprises the first corrugating roll and second corrugating roll, and further comprises the first smoothing roll provided in a feeding channel of a liner web, a ... | 11/07/2000 |
| 6112793 | Device for production of corrugated cardboard A device for production of corrugated cardboard, comprising a first fluted roller (1) and a second fluted roller (2) together forming a corrugating gap (3), a pressure contact roller (4) forming a pressure contact gap (5) together with the second fluted r... | 09/05/2000 |
| 6098687 | Single facer with angled medium feeding The present invention relates to a single facer, which comprises a humidifying and heating unit placed on the upstream side of an air pressurization corrugating mechanism for humidifying and heating a corrugating medium and a feed mechanism for supplying ... | 08/08/2000 |
| 6095963 | Apparatus for making corrugated paperboard A paperboard corrugating machine for forming board having two corrugated mediums joined at their flute tips without any intervening liner. The machine comprises a relatively heavy main frame (11) and a second frame (12) which is mounted for movement on th... | 08/01/2000 |
| 6092579 | Machine for the production of an at least single-face lined web of corrugated board A machine for the production of a single-face lined web of corrugated board comprises a pressing device for pressing a liner web on a paper web provided with a corrugation. This pressing device comprises a vapor permeable pressing belt which consists of a... | 07/25/2000 |
| 6089296 | Pre-conditioning of a medium web during the fabrication of corrugated paperboard An apparatus for preconditioning a medium web on a corragator before fluting the medium web during the manufacturing process of corrugated paperboard uses steam flows and pressures to press the medium web against a hot plate assembly. A plurality of elong... | 07/18/2000 |
| 6074507 | Corrugating roll with improved flute profile Corrugating rolls for forming corrugated paperboard medium are given a flute valley profile having a narrow channel along the valley base between arcuate segments of the valley base that parallel the channel on opposite sides of a radial plane of symmetry... | 06/13/2000 |
| 6068724 | Machine and method for manufacture of a sheet of single-face corrugated board by gluing under tension Machine (1) and method of manufacture of a single-face corrugated board sheet whereby a fluted cardboard sheet (23) is glued to a flat sheet. The machine comprises three heating cylinders having parallel axes, tangently arranged pairwise and means (26) fo... | 05/30/2000 |
| 6068701 | Method and apparatus for producing corrugated cardboard A method and apparatus for applying adhesive to the flutes of corrugated board to bond a face thereto. An applicator roll is provided with a uniform thin coating of adhesive by a flexible bar urged toward the surface of the applicator roll. A rider roll i... | 05/30/2000 |
| 6050316 | Single facer preheater A single facer including a preheater for conditioning a paperboard web. The preheater is positioned upstream form a corrugating nip and includes an arcuate surface facing the web. A plurality of primary channels are disposed internally within the preheate... | 04/18/2000 |
| 6048429 | Production of double wall corrugated web A synchronized flute double wall corrugated paperboard web is produced in a corrugating apparatus utilizing cooperatively operated single facers to provide an intermediate single face web with corrugated media on both faces, and then combining outer liner... | 04/11/2000 |
| 6016860 | Bonding two corrugated mediums at flute tips ensuring accurate alignment This invention relates to improved apparatus for forming paper board structures in which two corrugated mediums are bonded together at their flute tips. The apparatus comprises: two register rolls for ensuring that the mediums are brought into precise flu... | 01/25/2000 |
| 6012501 | Single facer with small intermediate corrugating roll and variable wrap arm device The labyrinth path in the corrugating nip of a single facer is substantially reduced by utilizing a small diameter corrugating roll captured between a larger diameter conventional corrugating roll and a backing roll arrangement. The smaller diameter corru... | 01/11/2000 |
| 6006806 | Laminated corrugating roll A heated cylindrical roll for handling and treating a running web of material has a laminated construction in which a series of thin circular rings, each in turn formed from a plurality of flat ring segments, are joined face-to-face to form a hollow cylin... | 12/28/1999 |
| 5951816 | Single facer with small intermediate corrugating roll The labyrinth path in the corrugating nip of a single facer is substantially reduced by utilizing a small diameter corrugating roll captured between a larger diameter conventional corrugating roll and a backing roll arrangement. The smaller diameter corru... | 09/14/1999 |
| 5951817 | Single facer having an auxiliary nip A single facer including an auxiliary nip providing an adjustable auxiliary force acting upon a corrugated medium web and a liner web for effective bonding therebetween to form a single faced board is disclosed. An endless belt cooperates with a corrugati... | 09/14/1999 |
| 5837085 | Method of making a toothed belt with a reinforced fabric covering A method of making a toothed belt. A toothed belt is made by guiding a strip of fabric to pass through a thermosetting resin to soak it with thermosetting resin, then the soaked fabric is guided to pass through a pair of toothed rollers to form a series o... | 11/17/1998 |
| 5766410 | Corrugating machine with an elastic press plate A single facer corrugating machine for improving the gluing effect of the medium paper and the liner includes an elastic press plate for supplying a suitable pressure on the medium paper and the liner after the former is coated with glue on one side, a pr... | 06/16/1998 |
| 5755902 | Method and apparatus for producing a composite web having transverse stretch This invention relates to apparatus and methods for fabricating a composite web having transverse stretch. In one embodiment a forming plow forms at least one groove in a first web of material. An applicator roll applies a second web of transversely stret... | 05/26/1998 |
| 5728256 | Smooth press for a machine for manufacturing corrugated cardboard A smooth press implements the application of a covering paper against a corrugated paper passing around a ribbed cylinder or roll of a single corrugator. The smooth press comprises a series of identical support arrangements arranged side-by-side along the... | 03/17/1998 |
