GB2270931A - Embossing means in a paper-making machine - Google Patents
Embossing means in a paper-making machine Download PDFInfo
- Publication number
- GB2270931A GB2270931A GB9220321A GB9220321A GB2270931A GB 2270931 A GB2270931 A GB 2270931A GB 9220321 A GB9220321 A GB 9220321A GB 9220321 A GB9220321 A GB 9220321A GB 2270931 A GB2270931 A GB 2270931A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nip
- paper
- pattern
- sheet
- embossing
- 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.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/006—Making patterned paper
Landscapes
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Paper (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
A paper making machine (10) is adapted to create a paper embossed eg on both sides by passing the web (17) after forming and before drying through an embossing nip (18) (19) having resilient surfaces. The nip components (18, 19) which may be rolls and/or belts may have their embossing design engraved thereon by means of a laser controlled by data derived by scanning a pattern. The resilient material may be applied in one or more sections to the rolls (18, 19) and can be engraved first while wrapped round a dummy roll. <IMAGE>
Description
Paper Making
This invention relates to paper making and in particular to the making of paper which has its surface or structure modified, for example by embossing.
Embossed paper has been made in several ways. In one known way a dandy roll engaging the paper web during forming on the wire has been used to make an impression on one side of the web.
After completion of the pressing and drying processes a paper is produced which has an embossed pattern on one side. The extent of such embossing is limited because of the effect of the subsequent pressing and drying on the pattern formed in the web.
Further, if a paper is required which is embossed on both sides (which is most desirable) it is necessary to manufacture two half thickness paper webs and then laminate them together. Clearly this involves forming two webs in separate forming sections and bringing them together prior to pressing or double the amount of machine running time to produce two webs and then the cost of in house or contract lamination.
Another previous known method of making embossed paper is to effect secondary treatment after the paper has been manufactured.
Such secondary treatment involves passing it between embossing rollers. This process again, is expensive because it requires a secondary treatment machine. Further, after forming and during the paper is relatively hard. For this reason, such embossing rollers have to be capable of dealing with paper in quite a hard condition and therefore need to be of metal or comparable material. To manufacture a pair of co-operating rollers to give double sided embossing requires heavy rollers with very close engagement. The cost of manufacturing such rollers and/or operating them with substantial nip pressures is undesirable and expensive.
It is an object of the present invention to provide a method of paper making wherein the above disadvantages are reduced or minimised.
The invention provides a method of paper making wherein after forming a paper web is passed through a resilient nip and surface modified.
The nip can be between a pair of rollers or any other convenient form of pressure applying nip. Desirably the nip is placed between the forming and drying stages and preferably during or after the pressing stage.
Desirably the process is carried out at a stage where the paper web contains from 50% to 65% water, preferably 54% to 58% moisture.
4
One component of the nip can have a textured surface and can operate against a plane component. Alternatively both components of the nip can be textured. In the latter case the two members of the nip can be driven in close synchronism. One or both components of the nip can have a surface of formed resilient plastics or rubber material. Desirably the material is rubber.
Desirably natural rubber is used. The rubber surface can be formed by moulding in a press, but desirably is formed by laser engraving.
In the case of a nip member in the form of a roller its surface can be made from the resilient material and the laser engraving can be performed on the actual roller surface. However, as paper web widths approach three metres it may not be economic to manufacture a laser etching machine of such a size. In these circumstances it can be desirable to mount a sheet of surface material on a dummy roll and laser engrave the surface thereof.
The sheet, after etching then being removed from the dummy roll and mounted on the embossing roll. Several sheets can be mounted side by side in register and secured to the embossing roll. The embossing roll can itself have an outer layer of resilient material compatible with the surface sheet. As the laser engraving process treats a sheet sequentially, rather than treating the entire sheet at the same time, the size of sleet which can be treated is not significantly limited. This is in contra-distinction to moulding or pressing of a rubber or elastic sheet, wherein the size of sheet to be produced is limited by the size of mould or press required and the difficulty of producing fine detail with great regularity on a large mould or press.
Desirably the nip components are arranged and constructed so as to be capable of change between an operative nipping condition and an inoperative non-nipping condition so as to allow change from production to non-embossed paper to embossed paper and vice versa without interrupting paper production.
In an advantageous development it can be possible for the nip to have a magazine arrangement so that different embossing patterns can be applied using different nip sets. Again it is desirable if this change can be effected whilst the paper web is running.
When the nip is inoperative, for example when rollers are retracted, it can be arranged for the rollers to be detached and replaced so as to allow the embossing pattern to be changed.
The invention also provides a paper making machine including a resilient embossing nip.
The nip can have one or two resilient surfaces. The or each resilient surface can be a textured surface. The surface can be formed by laser engraving.
The invention also provides a paper making nip embossing element having a resilient textured surface. The surface can be the surface of a roller. Desirably the surface is textured by laser engraving.
The invention also provides a method of creating a surface for a paper making embossing nip member including scanning a pattern to produce data representative of the pattern, mounting a sheet of resilient material, scanning the sheet with an engraving laser and modifying the laser output in accordance with said data to produce an engraved surface on the sheet derived from the pattern.
The pattern can itself be in the form of a sheet, for example of paper. Alternatively, the pattern could be built up on a computer screen and the scanning thereof effected by storing information from the computer screen on memory. The pattern can be a full size replica of the intended sheet surface or can be of a different size or scale. The data can be processed prior to engraving so as to modify the pattern. In particular, in the case of a pattern which is to form the basis of engraving on a large sheet of resilient material, the pattern can be only a fraction of the size of the sheet, the data derived from the pattern being electronically expanded to produce the same engraving over the entire sheet.
The invention also provides a method of making a resilient paper making embossing roller including the steps of providing a roll body having a cylindrical surface, making a plurality of resilient textured sheets as aforesaid and securing said sheets to the roll body in mated relationship.
The invention also provides non-laminated paper, especially of board weight, having embossed laid patterns on both sides. By laid pattern is meant a pattern of essentially parallel lines having for example a spacing of 0.Smm -2mm such as lmm between them forming alterntive small projections and dips in the surface of the paper.
It is known to form a laid pattern on paper of lighter grades (generally well below 150 g/m2) using a dandy roll on the wire of a conventional paper making machine so that the pattern formed on one surface of the paper by the dandy roll appears in reverse on the other side. However, for the heavier grades of paper, essentially those referred to as board and having a weight of about 150 g/m2 or more, it is not possible to produce a pattern which extends through from one side to the other in this way by means of a conventional dandy roll on the wire because the paper is too thick and heavy.
Although it has been possible to use a specialist twin-wire machine to produce heavier paper grades embossed with a laid pattern on both surfaces, this involves in situ laminating ofjtwo thinner paper webs after they have each had a laid pattern formed on one surface but before manufacture is complete. A further alternative is to laminate together after their manufacture two thinner sheets of paper which have both been provided with a laid pattern on one surface. In both instances, however, the fact of lamination can be deduced by expert examination of the finished product.
By the use of the paper-making process and apparatus according to the invention it is possible to obtain for the first time nonlaminated heavier-grade paper having a laid pattern on both sides. It also becomes possible to obtain non-laminated paper having different laid patterns on the two sides. Preferably, the lines of the laid pattern on the two sides of the heavier-grade paper run parallel to one another and are in register with one another so that dips on one side correspond to projections on the other, but this is not necessary. As the patterns are independent of one another they may vary from one to the other in spacing or direction of the lines or in displacement of the lines. This provides an additional possibility for non-laminated paper of lighter grades as well as board grades.
To form the laid pattern on both sides of the paper the two component rolls of the resilient embossing nip in the paper making machine are both formed with a corresponding pattern of essentially parallel lines of appropriate spacing and orientation, as by laser engraving or etching. The paper wei of appropriate weight is then passed through the resilient embossing nip in the manner described as part of the otherwise conventional manufacturing process.
With the paper according to the invention produced by the use of the resilient nip it is possible to make the chain lines less prominent than on paper produced by a conventional twin wire machine.
The sheets can be applied by adhesive and/or vulcanisation.
The invention will be described further, by way of example, with reference to the accompanying drawings wherein;
Figure 1 is a schematic illustration showing part of a conventional paper making process;
Figure 2 is a view similar to figure 1 but showing the process modified in accordance with the invention;
Figure 3 is a side elevation of part of a paper making machine modified in accordance with the invention;
Figure 4 is a schematic illustration of the laser etching process; and
Figure 5 is a partial side elevation of a preferred embossing roller of the invention. j Figure 6 is an enlarged perspective view, partially in section, of a portion of a sheet of non-laminated paper of board grade having an embossed laid pattern on both sides, the two patterns being not fully in register.
Figure 1 shows part of a prior known paper making machine, a conventional breast box (11) a Fourdrinier wire (12), presses 13, 14 and a dryer section (15).
When embossing is required the dandy roll (16) which usually applies a water mark is constructed to be textured by having a cylindrical surface on which are mounted very fine projections, for example, in the form of copper wires so as to form a desired control pin to which can be transferred to the paper and will manifest itself, after pressing and drying and subsequent treatment of the paper has an embossed surface. Such embossing is only on one side of a sheet.
Figure 2 shows the same paper making machine (10) but modified in accordance with the invention. After press (14) and before the dryer (15) the paper web (17) passes through a nip between a pair of embossing rollers (18) (19). Although figure 2 shows the machine being extended to accommodate the rollers (18) (19) in practice there is usually sufficient room to place the rollers without increasing the overall machine length. This is important in relation to existing machines wherein lengthening the machine is not practical.
At the position of the rolls (18) and (19) the paper web has a water content of from 50 to 65%, preferably from 54 to 58%.
Figure 3 shows the incorporation of rollers (18) and (19) having a particular embodiment of paper making machine in rather more detail. In figure 3 the paper web travels from right to left rather than from left to right as it is in figures 1 and 2.
Paper web (20) passes through press (13) and press (14) wherein it is preliminary dewatered by the absorbent felts (20). From the nip of press (14) the web (20) passes to the first dryer drum (22) and on its way passes the nip between rollers (18) and (19).
Roller (18) is fixed on a mounting (20) connected to the machine frame (24). Roller (19) has a mounting (25) pivotable at (26) and influenced by a hydraulic or comparable ram arrangement (27).
Ram arrangement (27) can serve either to maintain steady nip pressure during use or it can be used to withdraw the roll (19) completely away from the web. With the roll (19) withdrawn paper passing over the roller (18) is not significantly influenced thereby and a plain unembossed paper is produced. This allows production to be switched between embossed and plain paper to be changed at will. If desired roll (18) can also be rendered retractable. Normally rollers (18) and (19) will have textured surfaces which are complimentary and which interengage. However, by having one of the rollers textured and the other a plain resilient cylindrical surface, perhaps of a slightly ldwer hardness than the other, a nip can be produced which will produce a web which is embossed on both sides. This reduces the amount of work necessary to produce the nip. In the case where one of the rollers is retractable away from the web this can conveniently be the textured roller. When removed from the web the textured roller can be replaced with a roll having a different pattern, thus changing the nature of the embossing during use.
If both rollers are textured then both rollers can be rendered retractable and changeable in situ. If space permits the embossing rollers could be arranged in a magazine type arrangement to allow different nips of different embossing patterns to be introduced at will, even during running on the machine.
Figures 4 and 5 illustrate a method of making an embossing roller in accordance with the invention.
A roller (28) in accordance with the invention may be perhaps 3 metres long and about 500mm in diameter. The roller (28) can have a cylindrical metallic core (not shown) surrounded by a base layer of nature rubber, also cylindrical and also not shown. A plurality of sheets (29) engraved in accordance with thë following method are adhered to the resilient rubber base layer on the roller and arranged to mate at their joins (30) with adjacent sheets and secured by adhesive and/or vulcanisatiodso as to produce an embossing roller having a resilient surface throughout its length.
In the manufacture of sheet (19) a pattern is first produced.
The pattern can be in the form of a sheet of paper (30) upon which is marked the desired pattern. The art work can be in the form of a black and white representation of the desired pattern of texture required on the surface. The art work can be prepared on a single sheet and then enlarged photographically or electronically to form the sheet (31) which is of the same size as the final resilient sheet (29). Sheet (31) is mounted on a drum (32) of the same diameter as the roller (28). A plain sheet of resilient natural rubber (33) which will eventually form the sheet (29) is mounted on a comparable dummy roll or drum (34).
Drum (32) is indexed and rotated about its axis. At each index position a carriage (35) makes a traverse of the length of the drum (32). A laser indicated at (36) directs the beam at the sheet (31) as the carriage traverses and the sheet (31) reflects back to the laser a signal which depends on the pattern at any particular point. This information is stored on memory. The information stored in the memory, (which can be part of a computer controlling the whole process,) is then used to modify a laser indicated at (37) mounted on a carriage (38) which is traversable in a similar manner relative to drum (32). Laser~ (37) differs from laser (36) in that it is a quote "write" laser rather than a "read" laser. The laser (37) and drum (34) is indexed and as carriage (38) traverses it evaporates portion; of sheet (33) to form a textured surface in accordance with the pattern formed on sheet (31).
Although this is not strictly necessary, it is possible for the data to be modified before feeding to laser (37). For example a sample pattern on a small size can be feed into the computer, the computer can generate the pattern for a full size sheet (33) by repeating the pattern. This can be useful when a new formed pattern is needed and the expense of creating the pattern as art work in full is not justified. However, the use of a full size pattern and synchronised drum (32) and (34) operating simultaneously can have advantages in that data storage and later retrieval are unnecessary.
The invention is not limited to the precise details of the foregoing and variations can be made thereto.
Claims (50)
1. A method of paper making wherein after forming a paper web
is passed through a resilient nip and surface modified}
2. A method as claimed in claim 1 wherein the nip is between
a pair of rollers.
3. A method as claimed in claim 1 wherein the nip is between
a roller and a belt.
4. A method as claimed in claim 1 wherein the nip is between
a pair of belts.
5. A method as claimed in any preceding claim wherein the nip
is disposed between the forming and drying stages.
6. A method as claimed in claim 5 wherein the nip is during or
after the pressing stage.
7. A method as claimed in any preceding claim wherein the
process is carried out at a stage where the paper web
contains from 50% to 65% water.
8. A method as claimed in claim 7 wherein the paper web
contains 54% to 58% water.
9. A method as claimed in any preceding claim wherein one component of the nip has a textured surface and the other
component is plain.
10. A method as claimed in any of claims 1 to 8 wherein both
components of the nip are textured.
11. A method as claimed in claim 10 wherein the two components
of the nip are driven in synchronism.
12. A method as claimed in any preceding claim wherein one or
each component of the nip has a surface of formed resilient
plastics or rubber material.
13. A method as claimed in claim 12 wherein the material is
rubber.
14. A method as claimed in claim 13 wherein the rubber is
natural rubber.
15. A method of paper making substantially as described with
reference to the accompanying drawings.
16. A paper making machine including a resilient embossing nip.
17. A method as claimed in claim 16 wherein the nip has at least one resilient surface.
18. A method as claimed in claim 17 wherein the torch resilient surface is a textured surface.
19. A method as claimed in claim 18 wherein the surface has
been formed by laser engraving.
20. A method as claimed in claim 18 wherein the surface is
provided by one or more sheets mounted on a support.
21. A method as claimed in claim 20 wherein the support is a
roller.
22. A method as claimed in claim 20 wherein the support is a
belt.
23. A method as claimed in claims 20, 21 or 22 wherein the or
each sheet is moulded.
24. A method as claimed in claims 20, 21 or 22 wherein the or
each sheet is produced by laser engraving.
25. A method as claimed in any of claims 15 to 24 wherein the
nip components are arranged and constructed so as to be
capable of change between an operative nipping condition
and an inoperative non-nipping condition.
II
26. A method as claimed in claim 25 wherein change can occur
without interrupting paper production.
27. A method as claimed in any of claims 16 to 26 wherein the
nip has a magazine arrangement so that different embossing
patterns can be applied using different nip sets.
28. A method as claimed in claim 27 wherein the change can be
effected whilst the paper web is running.
29. A method as claimed in claim 27 or 25 wherein nip
components are detachable and replaceable.
30. A paper making machine substantially as described with
reference to the accompanying drawings.
31. A paper making nip embossing component having a resilient
textured surface.
32. A component as claimed in claim 31 and being a roller.
33. A component as claimed in claim 31 and being a belt.
34. A component as claimed in claims 31, 32 or 33 , wherein the"' surface has been textured by laser engraving.
35. A paper making nip embossing component substantiallb as
described with reference to the accompanying drawings.
36. A method of creating a surface for a paper making embossing
nip component including scanning a pattern to produce data
representative of the pattern, mounting a sheet of
resilient material, scanning the sheet with an engraving
laser and modifying the laser output in accordance with
said data to produce an engraved surface on the sheet
derived from the pattern.
37. A method as claimed in claim 36 wherein the pattern is in
the form of a sheet.
38. A method as claimed in claim 36 wherein the pattern sheet
is of paper.
39. A method as claimed in claim 36 wherein the pattern is
built up on a screen and information from the screen is
stored in memory.
40. A method as claimed in any of claims 36 to 38 wherein
the pattern is a full size replica of the intended sheet
surface.
41. A method as claimed in any of claims 36 to 38 wherein the
pattern is of a different size or scale. t
42. A method as claimed in any of claims 36 to 40 wherein the
data is processed prior to engraving to modify the pattern.
43. A method as claimed in any of claims 36 to 41 wherein the
sheet, after etching is removed from the dummy roll and
mounted on the embossing roll.
44. A method as claimed in claim 42 wherein several sheets can
be mounted side by side in register and secured to the
embossing roll.
45. A method as claimed in any of claims 36 to 43 wherein the
embossing roll itself has an outer layer of resilient
material compatible with the surface sheet.
46. A method of creating a surface for a paper making embossing
nip component substantially as described with reference to
the accompanying drawings.
47. A method of making a resilient paper making embossing
roller including the steps of providing a roll body having
a cylindrical surface, making a plurality of resilient
textured sheets by a method as claimed in any of claims 36
to 45 and securing said sheets to the roll body in mated
relationship.
48. A method as claimed in claim 45 wherein the sheets are
secured by adhesive and/or vulcanisation.
49. Non-laminated paper of board weight having embossed laid
patterns on both sides.
50. Non-laminataed paper having embossed laid patterns on both
sides, the patterns being independent of one another and
not complementary.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9220321A GB2270931A (en) | 1992-09-25 | 1992-09-25 | Embossing means in a paper-making machine |
AU61362/94A AU667626B2 (en) | 1992-09-25 | 1993-09-21 | Paper making |
DE69326012T DE69326012T2 (en) | 1992-09-25 | 1993-09-21 | PAPER MAKING |
PCT/GB1993/001993 WO1994008089A1 (en) | 1992-09-25 | 1993-09-21 | Paper making |
DK93920990T DK0662171T3 (en) | 1992-09-25 | 1993-09-21 | Papermaking |
EP93920990A EP0662171B1 (en) | 1992-09-25 | 1993-09-21 | Paper making |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9220321A GB2270931A (en) | 1992-09-25 | 1992-09-25 | Embossing means in a paper-making machine |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9220321D0 GB9220321D0 (en) | 1992-11-11 |
GB2270931A true GB2270931A (en) | 1994-03-30 |
Family
ID=10722535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9220321A Withdrawn GB2270931A (en) | 1992-09-25 | 1992-09-25 | Embossing means in a paper-making machine |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0662171B1 (en) |
AU (1) | AU667626B2 (en) |
DE (1) | DE69326012T2 (en) |
DK (1) | DK0662171T3 (en) |
GB (1) | GB2270931A (en) |
WO (1) | WO1994008089A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0687771A2 (en) | 1994-06-14 | 1995-12-20 | The Wiggins Teape Group Limited | Security paper |
WO1998033975A1 (en) * | 1997-02-04 | 1998-08-06 | Aussedat-Rey | Method for preparing marked paper and device for implementing said method |
GB2380977A (en) * | 2001-10-22 | 2003-04-23 | Sca Hygiene Prod Gmbh | Embossing tissue paper |
US7399513B2 (en) * | 2001-11-26 | 2008-07-15 | De La Rue International Limited | Paper including watermarks and/or embossing |
US20160016711A1 (en) * | 2009-03-30 | 2016-01-21 | Boegli-Gravures S.A. | Method and device for structuring the surface of a hard material coated solid body by means of a laser |
US9993895B2 (en) | 2009-03-30 | 2018-06-12 | Boegli-Gravures Sa | Method and device for structuring the surface of a hard material coated solid body by means of a laser |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU3133393A (en) * | 1991-11-27 | 1993-06-28 | Procter & Gamble Company, The | Cellulosic fibrous structures having pressure differential induced protuberances and a process of making such cellulosic fibrous structures |
IT1287656B1 (en) * | 1995-04-07 | 1998-08-06 | Cartiere Cariolaro Spa | PROCEDURE FOR THE PRODUCTION OF RELEVANT PAPER AND PLANT TO PERFORM THE PROCEDURE |
DE102018120558A1 (en) * | 2018-08-23 | 2019-08-14 | Voith Patent Gmbh | Process for processing a press jacket |
DE102018120559A1 (en) * | 2018-08-23 | 2019-07-04 | Voith Patent Gmbh | Method for processing a roll cover |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB413834A (en) * | 1933-04-26 | 1934-07-26 | Marie Jean Maurice Mougeot | Improvements in and relating to a machine for the manufacture of paper, cardboard or similar products |
GB836615A (en) * | 1956-12-21 | 1960-06-09 | Smith Paper Mills Ltd Howard | Apparatus for marking paper during manufacture such marking including embossing |
GB901387A (en) * | 1959-07-31 | 1962-07-18 | Scott Paper Co | Process and apparatus for treating sheet materials and the sheet materials produced thereby |
GB917074A (en) * | 1959-06-29 | 1963-01-30 | St Regis Paper Co | Extensible paper product and process |
GB1192398A (en) * | 1967-08-07 | 1970-05-20 | Karl Hanke | Relief Moulding of Fibrous Pulp Webs |
US4424519A (en) * | 1979-05-24 | 1984-01-03 | American Hoechst Corporation | System and method for producing artwork for printed circuit boards |
US4507173A (en) * | 1980-08-29 | 1985-03-26 | James River-Norwalk, Inc. | Pattern bonding and creping of fibrous products |
US4629858A (en) * | 1983-12-12 | 1986-12-16 | Interface Flooring Systems, Inc. | Method for engraving carpet and carpet so engraved |
GB2221060A (en) * | 1988-07-21 | 1990-01-24 | Ind Tech Res Inst | Controlling laser cutting |
EP0391539A2 (en) * | 1989-04-04 | 1990-10-10 | Melco Industries Inc. | Laser engraver with X-Y assembly and cut control |
DE4033230A1 (en) * | 1990-10-19 | 1992-04-23 | Hueck Fa E | Surface textures on metal press platens - are produced on plates or endless bands by subjecting surface to laser beam, controlling platen movements and beam intensity by computer |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE71762C (en) * | GEBR. SCHMITZ in Papierfabrik Merken b. Düren, Rheinland | Device for embossing characters in paper during its manufacture on the paper machine | ||
DE132665C (en) * | ||||
DE685472C (en) * | 1937-11-13 | 1939-12-18 | Ludwig Ernst Walter | Watermark form roller |
-
1992
- 1992-09-25 GB GB9220321A patent/GB2270931A/en not_active Withdrawn
-
1993
- 1993-09-21 WO PCT/GB1993/001993 patent/WO1994008089A1/en not_active Application Discontinuation
- 1993-09-21 AU AU61362/94A patent/AU667626B2/en not_active Ceased
- 1993-09-21 EP EP93920990A patent/EP0662171B1/en not_active Revoked
- 1993-09-21 DK DK93920990T patent/DK0662171T3/en active
- 1993-09-21 DE DE69326012T patent/DE69326012T2/en not_active Expired - Fee Related
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB413834A (en) * | 1933-04-26 | 1934-07-26 | Marie Jean Maurice Mougeot | Improvements in and relating to a machine for the manufacture of paper, cardboard or similar products |
GB836615A (en) * | 1956-12-21 | 1960-06-09 | Smith Paper Mills Ltd Howard | Apparatus for marking paper during manufacture such marking including embossing |
GB917074A (en) * | 1959-06-29 | 1963-01-30 | St Regis Paper Co | Extensible paper product and process |
GB901387A (en) * | 1959-07-31 | 1962-07-18 | Scott Paper Co | Process and apparatus for treating sheet materials and the sheet materials produced thereby |
GB1192398A (en) * | 1967-08-07 | 1970-05-20 | Karl Hanke | Relief Moulding of Fibrous Pulp Webs |
US4424519A (en) * | 1979-05-24 | 1984-01-03 | American Hoechst Corporation | System and method for producing artwork for printed circuit boards |
US4507173A (en) * | 1980-08-29 | 1985-03-26 | James River-Norwalk, Inc. | Pattern bonding and creping of fibrous products |
US4629858A (en) * | 1983-12-12 | 1986-12-16 | Interface Flooring Systems, Inc. | Method for engraving carpet and carpet so engraved |
GB2221060A (en) * | 1988-07-21 | 1990-01-24 | Ind Tech Res Inst | Controlling laser cutting |
EP0391539A2 (en) * | 1989-04-04 | 1990-10-10 | Melco Industries Inc. | Laser engraver with X-Y assembly and cut control |
DE4033230A1 (en) * | 1990-10-19 | 1992-04-23 | Hueck Fa E | Surface textures on metal press platens - are produced on plates or endless bands by subjecting surface to laser beam, controlling platen movements and beam intensity by computer |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0687771A2 (en) | 1994-06-14 | 1995-12-20 | The Wiggins Teape Group Limited | Security paper |
EP0687771A3 (en) * | 1994-06-14 | 1997-05-21 | Wiggins Teape Group Ltd | Security paper |
US5871615A (en) * | 1994-06-14 | 1999-02-16 | The Wiggins Teape Group Limited | Method for the manufacture of security paper |
WO1998033975A1 (en) * | 1997-02-04 | 1998-08-06 | Aussedat-Rey | Method for preparing marked paper and device for implementing said method |
FR2759098A1 (en) * | 1997-02-04 | 1998-08-07 | Aussedat Rey | METHOD FOR MANUFACTURING MARKED PAPER AND DEVICE FOR CARRYING OUT SAID METHOD |
GB2380977A (en) * | 2001-10-22 | 2003-04-23 | Sca Hygiene Prod Gmbh | Embossing tissue paper |
GB2380977B (en) * | 2001-10-22 | 2003-09-03 | Sca Hygiene Prod Gmbh | Device for embossing tissue paper |
US7399513B2 (en) * | 2001-11-26 | 2008-07-15 | De La Rue International Limited | Paper including watermarks and/or embossing |
US7704585B2 (en) * | 2001-11-26 | 2010-04-27 | De La Rue International Limited | Paper including watermarks and/or embossings |
KR100969648B1 (en) | 2001-11-26 | 2010-07-14 | 드 라 뤼 인터내셔날 리미티드 | Paper including watermarks and/or embossings |
US20160016711A1 (en) * | 2009-03-30 | 2016-01-21 | Boegli-Gravures S.A. | Method and device for structuring the surface of a hard material coated solid body by means of a laser |
US9993895B2 (en) | 2009-03-30 | 2018-06-12 | Boegli-Gravures Sa | Method and device for structuring the surface of a hard material coated solid body by means of a laser |
Also Published As
Publication number | Publication date |
---|---|
AU667626B2 (en) | 1996-03-28 |
DE69326012D1 (en) | 1999-09-16 |
GB9220321D0 (en) | 1992-11-11 |
AU6136294A (en) | 1994-04-26 |
WO1994008089A1 (en) | 1994-04-14 |
DE69326012T2 (en) | 1999-11-25 |
DK0662171T3 (en) | 2000-03-20 |
EP0662171A1 (en) | 1995-07-12 |
EP0662171B1 (en) | 1999-08-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6368539B1 (en) | Methods of embossing materials | |
JP3044129B2 (en) | Grooved porous belt used as long nip press belt and method for producing the same | |
EP0662171B1 (en) | Paper making | |
GB1436067A (en) | Paper sheets and processes for their manufacture | |
DE69811536D1 (en) | TEXTURED AND IMPERPERABLE PAPER MAKING TAPE, METHOD FOR THE PRODUCTION THEREOF AND METHOD FOR PRODUCING PAPER | |
PL341564A1 (en) | Method of making three-dimensionally patterned paper | |
BR9508192A (en) | Apparatus for use in the manufacture of a fiber texture of making paper paper structure and process for forming a paper texture | |
CA2200548A1 (en) | Method and Apparatus for Contour Multilevel Embossing with Perforation Bonding in Selected Spaced Locations | |
CA1242344A (en) | Dandy roll for manufacturing paper having simulated oxford cloth watermark and related method for papermaking | |
US6419795B1 (en) | Resin-impregnated belt having a texturized outer surface for application on papermaking machines | |
FI58801B (en) | TILL EN PAPPERSMASKIN HOERANDE SK SUPERKALANDER | |
DK0464258T3 (en) | Felt, in particular paper machine felt and method of making it | |
GB1589800A (en) | Tissue paper-making machine | |
US6514385B2 (en) | Press section with alternatives press shoes of different length | |
AU643558B2 (en) | Dandy roll for manufacturing paper | |
ATE220743T1 (en) | PRESS PARTY | |
CA2140734A1 (en) | Method and device for quality improvement in multilayer and multiply papers | |
WO1995016821A1 (en) | A press apparatus for pressing water from a formed web | |
EP1975311B1 (en) | Anti-falsification watermark paper and method of making same | |
KR100995543B1 (en) | Improvements in fibrous sheets | |
WO1998027277A1 (en) | Papermakers felts | |
JP2000073299A (en) | Production of pattern paper | |
EP1005589B1 (en) | Resin-impregnated belt having a texturized outer surface for application on papermaking machines | |
WO1993023615A1 (en) | Method for treatment of a paper web in the drying section of a papermachine | |
US369957A (en) | Thomas j |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |