EP0409510A1 - A heat transfer system - Google Patents
A heat transfer system Download PDFInfo
- Publication number
- EP0409510A1 EP0409510A1 EP90307716A EP90307716A EP0409510A1 EP 0409510 A1 EP0409510 A1 EP 0409510A1 EP 90307716 A EP90307716 A EP 90307716A EP 90307716 A EP90307716 A EP 90307716A EP 0409510 A1 EP0409510 A1 EP 0409510A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat transfer
- transfer system
- board
- flexible
- continuous web
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/20—Corrugating; Corrugating combined with laminating to other layers
- B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
- B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
- B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
- B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
- B31F1/2877—Pressing means for bringing facer sheet and corrugated webs into contact or keeping them in contact, e.g. rolls, belts
- B31F1/2881—Pressing means for bringing facer sheet and corrugated webs into contact or keeping them in contact, e.g. rolls, belts for bringing a second facer sheet into contact with an already single faced corrugated web
Definitions
- THIS INVENTION relates to heat transfer systems wherein a continuous web of material is to be transported across the surface of one or more hot plates whereby the web is subjected to an elevated temperature for a predetermined period.
- the invention is concerned with corrugating machinery in which so-called single faced board with glue applied to the exposed tips of a corrugated sheet is brought together with a liner which is thus bonded to the glued tips to form a double faced board, and the composite board is carried beneath a conveying belt past a bank of heaters which assist in the bonding of the liner to the corrugated tips of the single faced board.
- a system of this kind incorporates a series of weight rolls which bear on the conveying belt to maintain contact between the board and the hot plate surfaces of the heaters, in order to ensure adequate heat transfer.
- An object of the present invention is to provide a heat transfer system wherein the aforementioned disadvantage is at least substantially avoided.
- a heat transfer system in which a continuous web of material is carried past a series of hot plates, there being means imposing a load on the face of the material remote from the hot plates to maintain contact between the material and the hot plates; characterised in that said load applying means includes at least one flexible vessel containing a fluid medium and adapted to press said material against the hot plates thereby to conform to the surface of the latter irrespective of any undulation thereof.
- a single faced corrugated board 10 with glue applied to the tips of the corrugations is brought together, beneath a roller 11, with a continuous liner sheet 12.
- the double faced board so formed then travels in the direction of arrow 13 across a number of steam chests 14 providing a continuous upper hot plate surface 15.
- a series of weight rollers 17 bear against the upper surface of belt 16 as it passes over the hot plate surfaces 15 to maintain contact between the latter and the liner 12.
- the present invention is based upon an appreciation of the need to permit the board to follow any distortion or undulation of the hot plate surface, thus ensuring uniform contact and heat transfer across the entire width of the board.
- the weight rollers 17 are replaced by a series of flexible vessels or bags 20 which are at least partially filled with water.
- Each vessel 20 bears upon a thin steel plate 21, of between 1.5 mm and 2 mm in thickness, which is loosely pivotable about a transverse rod 22 at its upstream end in relation to the direction of travel of the board.
- the vessels 20 may be made from natural or artificial rubber or a flexible plastics material, and each is preferably provided with filling and drainage means for topping up or for controlling the volume of water contained in them and thus the weight applied by them.
- the board 10, 11 is maintained in contact with the hot plate surfaces 15 irrespective of any undulation or distortion thereof. Therefor, efficient heat transfer is ensured and there is substantially uniform pressure applied right across the board thus avoiding crushing of the side regions thereof.
- Other advantages include reduced maintenance, even pressure applied to the hot plates, and the achievement of higher machine speeds owing to the complete heat transfer afforded.
- the weight may be adjusted by an operator, according to the conditions prevailing.
- the liquid contained within the vessels 20 may be other than water, and the attitude and arrangement of the various parts may be other than as a flat bed process as illustrated. Clearly if the board is to travel vertically instead of horizontally then some means will be required to apply a load to the back of the vessels 20 to urge them towards the belt 16.
- the conveying belt 16 may be omitted.
- Each bag 25 is constrained by a fixed upper plate or grille 26 and side members 27.
- a flexible plate 28 is fixed at 29 to the machine framework an dextends beneath the bag 25 above belt 16.
- each bag 25 may span two steam chests 14.
- Inflation of the bags 25 is adjustable to determine the load imposed on the belt, but as with the liquid-filled vessels, the bags will enable the plates 28 to follow any undulation in the belt 16 and board 10, 12 due to distortion of surfaces 15.
Abstract
Description
- THIS INVENTION relates to heat transfer systems wherein a continuous web of material is to be transported across the surface of one or more hot plates whereby the web is subjected to an elevated temperature for a predetermined period.
- Particularly, though not exclusively, the invention is concerned with corrugating machinery in which so-called single faced board with glue applied to the exposed tips of a corrugated sheet is brought together with a liner which is thus bonded to the glued tips to form a double faced board, and the composite board is carried beneath a conveying belt past a bank of heaters which assist in the bonding of the liner to the corrugated tips of the single faced board.
- Conventionally, a system of this kind incorporates a series of weight rolls which bear on the conveying belt to maintain contact between the board and the hot plate surfaces of the heaters, in order to ensure adequate heat transfer.
- This arrangement suffers from the disadvantage that the hot plate surfaces tend to become distorted, particularly when the belt is transported at high speeds, leading to uneven heat transfer and zones of excessive loading where the material may become crushed.
- An object of the present invention is to provide a heat transfer system wherein the aforementioned disadvantage is at least substantially avoided.
- According to the present invention there is provided a heat transfer system in which a continuous web of material is carried past a series of hot plates, there being means imposing a load on the face of the material remote from the hot plates to maintain contact between the material and the hot plates; characterised in that said load applying means includes at least one flexible vessel containing a fluid medium and adapted to press said material against the hot plates thereby to conform to the surface of the latter irrespective of any undulation thereof.
- Embodiments of the invention, will now be described, with reference to the accompany schematic drawings, in which:-
- Fig. 1 is a side elevation of a conventional heat transfer machine for bonding a liner sheet to a single faced and glued corrugated board;
- Fig. 2 is a vertical section taken along line II-II of Fig. 1;
- Fig. 3 is a view similar to Fig. 1 of a heat transfer machine made in accordance with a first embodiment of the invention;
- Fig. 4 is a view similar to Fig. 2, taken on line IV-IV of Fig. 3.
- and Fig. 5 is a view similar to Fig. 3, but showing a second embodiment.
- Referring now to Fig. 1, in a conventional system a single faced
corrugated board 10 with glue applied to the tips of the corrugations is brought together, beneath aroller 11, with acontinuous liner sheet 12. The double faced board so formed then travels in the direction ofarrow 13 across a number ofsteam chests 14 providing a continuous upperhot plate surface 15. - Also passing around
roller 11 and riding in superimposed relationship on the double faced board is acontinuous conveying belt 16. - A series of
weight rollers 17 bear against the upper surface ofbelt 16 as it passes over thehot plate surfaces 15 to maintain contact between the latter and theliner 12. - It has been found, particularly when the double faced board is carried through the machine at high speeds, that the resultant difference in temperature between the top and bottom walls of each
steam chest 14 causes deformation so that thehot plate surface 15 becomes concave about an axis along the centre of the machine as illustrated in exaggerated form in Fig. 2. Thus, only the side edge regions of theboard hot plate surface 15. This leads to inadequate heat transfer and mechanical damage to the sides of the finished board. - The present invention is based upon an appreciation of the need to permit the board to follow any distortion or undulation of the hot plate surface, thus ensuring uniform contact and heat transfer across the entire width of the board.
- Thus, in accordance with one embodiment of the invention and with reference to Fig. 3 it will be seen that the
weight rollers 17 are replaced by a series of flexible vessels orbags 20 which are at least partially filled with water. Eachvessel 20 bears upon athin steel plate 21, of between 1.5 mm and 2 mm in thickness, which is loosely pivotable about atransverse rod 22 at its upstream end in relation to the direction of travel of the board. Thevessels 20 may be made from natural or artificial rubber or a flexible plastics material, and each is preferably provided with filling and drainage means for topping up or for controlling the volume of water contained in them and thus the weight applied by them. - Accordingly, as illustrated in Fig. 4, due to the flexibility of the
vessels 20 and theplates 21, theboard hot plate surfaces 15 irrespective of any undulation or distortion thereof. Therefor, efficient heat transfer is ensured and there is substantially uniform pressure applied right across the board thus avoiding crushing of the side regions thereof. Other advantages include reduced maintenance, even pressure applied to the hot plates, and the achievement of higher machine speeds owing to the complete heat transfer afforded. - With appropriate filling and draining facilities the weight may be adjusted by an operator, according to the conditions prevailing.
- The liquid contained within the
vessels 20 may be other than water, and the attitude and arrangement of the various parts may be other than as a flat bed process as illustrated. Clearly if the board is to travel vertically instead of horizontally then some means will be required to apply a load to the back of thevessels 20 to urge them towards thebelt 16. - If required, in certain applications, the
conveying belt 16 may be omitted. - Referring now to Fig. 5, in place of the liquid-filled
vessels 20, there is provided, as an alternative, a series of gas filledbags 25 above thebelt 16. Eachbag 25 is constrained by a fixed upper plate orgrille 26 andside members 27. Aflexible plate 28 is fixed at 29 to the machine framework an dextends beneath thebag 25 abovebelt 16. - As illustrated, each
bag 25 may span twosteam chests 14. - Inflation of the
bags 25 is adjustable to determine the load imposed on the belt, but as with the liquid-filled vessels, the bags will enable theplates 28 to follow any undulation in thebelt 16 andboard surfaces 15. - Beneath
upper plate 28, and arranged side by side across the width of thebelt 16, there may be severalinflatable bags 25 so that, for example, when handling narrow board, only a central one of the available bags may be utilised. In this case, a separate inflation valve is required for each bag so that the operator may select the areas where overhead pressure is to be applied.
Claims (10)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8916373 | 1989-07-18 | ||
GB898916373A GB8916373D0 (en) | 1989-07-18 | 1989-07-18 | A heat transfer system |
GB8924053A GB2233935B (en) | 1989-07-18 | 1989-10-25 | A heat transfer system |
GB8924053 | 1989-10-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0409510A1 true EP0409510A1 (en) | 1991-01-23 |
EP0409510B1 EP0409510B1 (en) | 1994-12-28 |
Family
ID=26295622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90307716A Expired - Lifetime EP0409510B1 (en) | 1989-07-18 | 1990-07-13 | A heat transfer system |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0409510B1 (en) |
AT (1) | ATE116200T1 (en) |
DE (1) | DE69015482T2 (en) |
DK (1) | DK0409510T3 (en) |
ES (1) | ES2066980T3 (en) |
GR (1) | GR3015179T3 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0566842A1 (en) * | 1992-04-16 | 1993-10-27 | BHS-Bayerische Berg-, Hütten- und Salzwerke Aktiengesellschaft | Heating device for corrugated paper making plant |
EP0687552A3 (en) * | 1994-06-16 | 1996-04-17 | Bhs Corr Masch & Anlagenbau | Machine for the production of corrugated paper covered on at least one side |
WO1996031340A1 (en) * | 1995-04-06 | 1996-10-10 | Scm Container Machinery Limited | A heat transfer system |
EP0778124A2 (en) * | 1995-12-06 | 1997-06-11 | Corrugated Gear & Services, Inc. | Apparatus and method for applying variable pressure to a surface in corrugated paperboard manufacturing |
WO1998016374A1 (en) * | 1996-10-16 | 1998-04-23 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus with board profile monitoring and related methods |
WO1998016372A2 (en) * | 1996-10-16 | 1998-04-23 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus and related methods |
US5847362A (en) * | 1996-10-16 | 1998-12-08 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus providing controllable heat and related methods |
WO1999024249A1 (en) * | 1997-11-10 | 1999-05-20 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus and method for enhancing heat transfer to an advancing corrugated paperboard sheet |
US5993587A (en) * | 1997-03-07 | 1999-11-30 | Mitsubishi Heavy Industries, Ltd. | Double facer with threading means |
US7291243B2 (en) | 2003-06-27 | 2007-11-06 | Fosber S.P.A. | Device for joining sheets of cardboard to form corrugated cardboard |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2217652A (en) * | 1937-05-12 | 1940-10-08 | Quick Gretta | Laminating press |
FR1449593A (en) * | 1964-04-27 | 1966-05-06 | Niwa Machinary Co | Pressing and drying plant for corrugated board manufacturing equipment |
NL6700871A (en) | 1967-01-19 | 1968-07-22 | ||
DE1957270B1 (en) * | 1969-11-14 | 1971-04-22 | Eickhoff Geb | Device for manufacturing corrugated cardboard with a double-sided smooth cover sheet |
DE2108378A1 (en) * | 1971-02-22 | 1972-08-31 | Eickhoff-Universal Wellpappenmaschinen Gmbh, 4630 Bochum | Device for the production of corrugated cardboard with a double-sided smooth web |
GB2039342A (en) * | 1979-01-16 | 1980-08-06 | Rengo Co Ltd | Rolls for use in corrugated fibreboard production and processing machines |
GB2137246A (en) | 1983-03-29 | 1984-10-03 | Neu Engineering Limited | Drying corrugated board |
EP0342552A2 (en) * | 1988-05-19 | 1989-11-23 | Mitsubishi Jukogyo Kabushiki Kaisha | Double facer |
-
1990
- 1990-07-13 DE DE69015482T patent/DE69015482T2/en not_active Expired - Fee Related
- 1990-07-13 AT AT90307716T patent/ATE116200T1/en not_active IP Right Cessation
- 1990-07-13 ES ES90307716T patent/ES2066980T3/en not_active Expired - Lifetime
- 1990-07-13 DK DK90307716.2T patent/DK0409510T3/en active
- 1990-07-13 EP EP90307716A patent/EP0409510B1/en not_active Expired - Lifetime
-
1995
- 1995-02-23 GR GR950400393T patent/GR3015179T3/en unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2217652A (en) * | 1937-05-12 | 1940-10-08 | Quick Gretta | Laminating press |
FR1449593A (en) * | 1964-04-27 | 1966-05-06 | Niwa Machinary Co | Pressing and drying plant for corrugated board manufacturing equipment |
NL6700871A (en) | 1967-01-19 | 1968-07-22 | ||
DE1957270B1 (en) * | 1969-11-14 | 1971-04-22 | Eickhoff Geb | Device for manufacturing corrugated cardboard with a double-sided smooth cover sheet |
DE2108378A1 (en) * | 1971-02-22 | 1972-08-31 | Eickhoff-Universal Wellpappenmaschinen Gmbh, 4630 Bochum | Device for the production of corrugated cardboard with a double-sided smooth web |
GB2039342A (en) * | 1979-01-16 | 1980-08-06 | Rengo Co Ltd | Rolls for use in corrugated fibreboard production and processing machines |
GB2137246A (en) | 1983-03-29 | 1984-10-03 | Neu Engineering Limited | Drying corrugated board |
EP0342552A2 (en) * | 1988-05-19 | 1989-11-23 | Mitsubishi Jukogyo Kabushiki Kaisha | Double facer |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0566842A1 (en) * | 1992-04-16 | 1993-10-27 | BHS-Bayerische Berg-, Hütten- und Salzwerke Aktiengesellschaft | Heating device for corrugated paper making plant |
EP0687552A3 (en) * | 1994-06-16 | 1996-04-17 | Bhs Corr Masch & Anlagenbau | Machine for the production of corrugated paper covered on at least one side |
WO1996031340A1 (en) * | 1995-04-06 | 1996-10-10 | Scm Container Machinery Limited | A heat transfer system |
EP0778124A2 (en) * | 1995-12-06 | 1997-06-11 | Corrugated Gear & Services, Inc. | Apparatus and method for applying variable pressure to a surface in corrugated paperboard manufacturing |
EP0778124A3 (en) * | 1995-12-06 | 1997-12-17 | Corrugated Gear & Services, Inc. | Apparatus and method for applying variable pressure to a surface in corrugated paperboard manufacturing |
WO1998016372A2 (en) * | 1996-10-16 | 1998-04-23 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus and related methods |
WO1998016374A1 (en) * | 1996-10-16 | 1998-04-23 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus with board profile monitoring and related methods |
WO1998016372A3 (en) * | 1996-10-16 | 1998-10-15 | Interfic Inc | Corrugated paperboard manufacturing apparatus and related methods |
US5837974A (en) * | 1996-10-16 | 1998-11-17 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus with board profile monitoring and related methods |
US5847362A (en) * | 1996-10-16 | 1998-12-08 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus providing controllable heat and related methods |
US5902502A (en) * | 1996-10-16 | 1999-05-11 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus and related methods |
US5993587A (en) * | 1997-03-07 | 1999-11-30 | Mitsubishi Heavy Industries, Ltd. | Double facer with threading means |
WO1999024249A1 (en) * | 1997-11-10 | 1999-05-20 | Interfic, Inc. | Corrugated paperboard manufacturing apparatus and method for enhancing heat transfer to an advancing corrugated paperboard sheet |
US7291243B2 (en) | 2003-06-27 | 2007-11-06 | Fosber S.P.A. | Device for joining sheets of cardboard to form corrugated cardboard |
Also Published As
Publication number | Publication date |
---|---|
EP0409510B1 (en) | 1994-12-28 |
ES2066980T3 (en) | 1995-03-16 |
DK0409510T3 (en) | 1995-05-29 |
DE69015482D1 (en) | 1995-02-09 |
GR3015179T3 (en) | 1995-05-31 |
DE69015482T2 (en) | 1995-05-24 |
ATE116200T1 (en) | 1995-01-15 |
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