EP0175276A2 - A method for the manufacture of a paper web with decorative edge cutting - Google Patents
A method for the manufacture of a paper web with decorative edge cutting Download PDFInfo
- Publication number
- EP0175276A2 EP0175276A2 EP85111502A EP85111502A EP0175276A2 EP 0175276 A2 EP0175276 A2 EP 0175276A2 EP 85111502 A EP85111502 A EP 85111502A EP 85111502 A EP85111502 A EP 85111502A EP 0175276 A2 EP0175276 A2 EP 0175276A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- roller
- rollers
- edge
- pair
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/002—Precutting and tensioning or breaking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4148—Winding slitting
- B65H2301/41487—Winding slitting trimming edge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/13—Parts concerned of the handled material
- B65H2701/132—Side portions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
- Winding Of Webs (AREA)
- Paper (AREA)
- Nonmetal Cutting Devices (AREA)
- Laminated Bodies (AREA)
Abstract
Description
- The present invention relates to a method for the manufacture of a paper web with decorative edge cutting comprising the separation of at least one edge portion of a paper web whilst at the same time a decorative, irregular edge structure is imparted to the outer lateral edge of the web formed by the separation. The invention relates further to a method for dividing such a web cut along the edge into sheets by severing pieces of sheet from the web whilst forming a decorative irregular edge cutting transversely to the web.
- In the manufacture of hand-made paper in the form of sheets a decorative, irregular, outer edge is obtained. However, the manufacture of such paper is very expensive and such hand-made paper occurs, therefore, only to a very limited extent.
- It has been found that paper of the same high, and an even more uniform quality than the existing hand-made paper can be produced by mechanical means, but that the same decorative edge structure is not obtained by this method owing to the mechanical paper being produced in an endless web and not in single sheets.
- However, mechanically made paper of high quality with decorative edge cutting can be produced if the cutting is carried out in a special manner and after special premachining of the paper material. A direction concerning such a method is given in the present patent application, which is characterized in that the paper web is compressed in the separating zone by means of co-operating rollers, whereupon the web is conducted over a roller comprising a cutting or tearing device, e.g. a tear wire, knife or cutting wheel, which is located so that it is made to engage with the said compressed region of the web when the same is led over the roller and that the webwhen it is led past the cutting or tearing deviceis broken up in its longitudinal direction.
- An embodiment of the method in accordance with the invention will be described in the following with reference to the enclosed schematic drawing, wherein
- Fig 1. shows an arrangement for the edge and sheet cutting of a paper web,
- Fig 2. shows a cross-section of the arrangement for compression of the paper web,
- Fig 3. shows an arrangement for the cutting of the longitudinal edges, and
- Fig 4. shows the web schematically in its different phases during the cutting into sheets.
- The manufacture of the web or sheet in accordance with the invention is started already during the paper making, where the paper stock in the normal manner is poured onto an endless wire screen. In a known manner so-called watermarks can be obtained in a paper by treating the paper pulp on the screen with a so-called dandy roller. This dandy roller consists of a cylinder clad with a screenlike wire netting. In this wire netting is inlaid a pattern of other wires which on the one hand project a little outside the surface of the wire cylinder and on the other hand reduce the mesh width on the net-clad cylinder. Along the region where additional wires have been inserted so-called watermarks are formed if the dandy roller is made to rotate with the screen and in so doing has its surface in the paper pulp. It is possible in this manner to form longitudinal and transverse zones or edges which form watermarks in the finished paper. It is ensured of course that the width between the "watermark edges" of the dandy roller becomes the desired width of the final web or sheet, and that the distance between the transverse watermark edges will correspond to the desired length of the sheets in the case where the web is intended to be divided up into individual sheets.
- After drying of the
paper web holes 42 may be made in theedge portions 41 of theweb 2 for the guiding and feeding of the paper web e.g. into a data printer. As is evident from fig.4, theweb 2 is provided withlongitudinal watermark lines 43 andtransverse watermark lines 44 which jointly delimit thesheet 45 which is to be produced, this sheet having a decorative,irregular edge zone 46 in thesaid watermark zones sheet 45 in conjunction with the irregular edge cutting and the otherwise high quality of the paper give the impression of the paper having been hand-made. - Thus the paper web?is made in the normal manner but is provided with at least
longitudinal watermark lines 43 and, if the web is to be converted to sheets, also withtransverse watermark lines 44. The said paper web produced is rolled onto a magazine roll 1 which is shown in fig. 1, and theweb 2 is led over the deflection rollers 3 to be conducted subsequently to the treatment station I where the web in thelongitudinal watermark zones 43 is subjected to a compression with the help of a tool which is arranged on a roller 4 and which operates against a plain hold-onroller 5. On the tool roller 4, which can be pressed against the hold-onroller 5 with the help of a spring or an air cylinder 8, a tool is arranged, the working surface of which has a profile 9 as shown in fig. 2. The compression tool 9 is thus of a convex shape and preferably a V-shape with rounded front surface and when theweb 2 is conducted between therollers 5 and 4 the tool 9 will be pressed into theweb 2, and since the tool 9 is arranged around the periphery of the web 4 the tool 9 will during the rolling movement continuously compress a zone A of theweb 2 whilst the web is conducted past theroller pair 4 and 5. Owing to the particular shape of the tool 9 the compression will be greatest at the front part of the tool 9 and diminish then towards the edges of the compression zone A. The compressed zone can be made of any width, but in the present case the width of the compressed zone is 1 - 5mm. As is evident from fig. 2, the compressed zone A is located within the zone B which represents thezones 43 with the longitudinal watermark edges. The tool 9 is thus brought into engagement with theweb 2 along thelongitudinal watermark zones 43 and is guided so that during the whole time the compression zone is inside thewatermark zone 43. Since theweb 2 has twowatermark zones 43, the roller 4 is provided with two annular tools arranged around the periphery of the roller which are adapted so that they both operate within thewatermark edge zones 43, and the pressure with which the tool 9 is pressed against theweb 2 can be regulated with the help of springs or air cylinders; 8. The tool 9 is preferably made of steel and the plain hold-onroller 5 too is preferably made of steel. The web treated in this manner in station I is conducted to station II which comprises a rotatingroller 6, this roller being provided withgrooves 20 which are arranged at such a distance from each other that their mutual position corresponds to thecompressed watermark zones 43. The station II, moreover, comprises a cutting arrangement 7 which consists of astationary wire 21, preferably of metal, which is clamped betweenclamping points 22 fixed to the frame of machine. - As is evident from fig.3, the
wire 21 is clamped in such a manner that it is inclined in respect of the web and forms an acute angle alpha with the web. Thewire 21 is located so that it lies in thegroove 20 preferably without resting against theroller 6. Thewires 21 are preferably adjusted so in their position that they correspond to the position of the compressed zone A on thewatermark edges 43. - When the
web 2 is led over theroller 6 thetearing wires 21 will tear up thematerial web 2 along the compressed parts of thewatermark edge zones 43, the outer edges being separated whilst the tearing edge obtains a somewhat irregular edge structure. - In the station III the
separated edge zone 46 is machined again by two co-operating clamp rollers which are pressed against each other in the edge zone, any portions of the edge zone which may have "napped up" being pressed together. Theweb 2 is led over thedeflection roller 10 up to the station IV where two co-operating and controlled clamp rollers compress thetransverse watermark zones 44. This compression is carried out with linear pressing tools which are arranged axially to the surface of the clamp rollers 12, and the compression of thetransverse watermark zones 44 is carried out in such a manner that the paper web is not completely severed but is substantially weakened in as much as the paper fibres are crushed. It is also possible to arrange on the rollers 12 hinged clippers for the severing of the paper sheets, but in this case it is not possible to achieve the same attractive edge structure as when the paper fibres are crushed and thesheets 45 are subsequently separated from theweb 2 by pulling until the weakened watermark zone is caused to break. Thecylinders 11 in the station IV have to be controlled so that the tools will engage at the right place, that is to say within thewatermark edge 44 and this can be done e.g. by means of a photocell control. This control functions so that a photocell indicates the position of thewatermark zone 44 which is more transparent than the surrounding portions, whereupon a signal is transmitted to the driving unit for the pair of rollers so that thetools 12, 13 will engage with thepaper web 2 precisely in thetransverse watermark zones 44. In case theweb 2 is not completely severed but only weakened through compression of thewatermark zone 44 the web is introduced between two drivenrollers 14 which are driven by amotor 15 by means of a belt 16. In the tear-off station IV theweb 2, after it has left therollers 14, is-led further to therollers 19 which with the help of atransmission 17 are driven by a gear which imparts an intermittent speed to the rollers. - In the station IV the
individual sheets 45 are severed from theweb 2 in that the front part of the web is torn or pulled loose from the rest of the web, the severing taking place along the weakenedwatermark zone 44. The tearing off takes place so that the web is advanced by and is held tight between therollers 14 and that the front end of theweb 2 is similarly advanced and held tight between therollers 19. To the pair of rollers 19 a rate of feed is imparted in a first phase which is less than the rate of feed of the pair ofrollers 14. This means that the part of theweb 2 which is between the pairs ofrollers rollers 19 is increased so that it becomes higher than the rate of feed of thepairof rollers 14 and when this happens the web is suddenly stretched, the tensile stresses in the web becoming so great that it breaks along the compressed and weakened portion which is located in thewatermark zones 44. As the pair ofrollers 19 continues at its higher rate of feed thesheet 45 which has been torn loose will be transported to thestack 30 of sheets before the front end of the web, which is fed forward with the help of pair ofrollers 14, has time to advance to the nip between the pair ofrollers 19. - The
sheet 45 produced which has been treated in the above mentioned manner will have around its edge a narrow "watermark zone" and a somewhat irregular edge structure which is reminiscent of that which is found on hand-made paper. - In certain cases it is not desired to sever the individual sheets from the
web 2, but to retain the web. Theedge zone 41 of the web may then be provided withholes 42 adapted for a feed by means of toothed wheels. Theedge zonewith holes 42 can be used for toothed wheel feed in an arrangement of the type as shown in fig. 1 but it can also be used in conjunction with printouts from automatic printers of the type used in connection with computers. If the guiding is done with the help of the toothed holes in the edge zones of theweb 2, a very accurate feed of the web can be obtained and theedge zones 41 are severed in the manner as described earlier in the station II so that after passage of theclamp rollers 23 in the station III they are removed as edge clippings and be dumped into acollecting device 24. - The arrangement described here is intended only as an example of such an arrangement representing an embodiment of the invention and it is possible, for example, to use instead of the tearing wire 21 a rotating knife or a fixed (blunt) knife edge.
Claims (8)
which is located so that it is made to engage with the said compressed region of the web when the same is led over the roller and that the web,when it is led past the cutting or tearing device <is broken up in its longitudinal direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85111502T ATE68395T1 (en) | 1984-09-19 | 1985-09-11 | MANUFACTURING PROCESS FOR PAPER SHEETS WITH DECORATIVE EDGES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08423674A GB2166996B (en) | 1984-09-19 | 1984-09-19 | A method for the manufacture of a paper web with decorative edge cutting |
GB8423674 | 1984-09-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0175276A2 true EP0175276A2 (en) | 1986-03-26 |
EP0175276A3 EP0175276A3 (en) | 1988-03-30 |
EP0175276B1 EP0175276B1 (en) | 1991-10-16 |
Family
ID=10566940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85111502A Expired - Lifetime EP0175276B1 (en) | 1984-09-19 | 1985-09-11 | A method for the manufacture of a paper web with decorative edge cutting |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0175276B1 (en) |
JP (1) | JPS6186195A (en) |
AT (1) | ATE68395T1 (en) |
CA (1) | CA1256014A (en) |
DE (1) | DE3584411D1 (en) |
GB (1) | GB2166996B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001002143A1 (en) * | 1999-07-05 | 2001-01-11 | Gevas Verpackungsmaschinen Gmbh | Web of material with detachable strips that are subdivided by separating lines and device for producing the separating lines in the web of material |
CN110238883A (en) * | 2019-07-26 | 2019-09-17 | 益阳市锦汇电子有限公司 | A kind of capacitor production raw material cutting device |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1470675A (en) * | 1921-10-10 | 1923-10-16 | American Writing Paper Company | Method for making paper having the appearance of handmade paper |
US1616211A (en) * | 1927-02-01 | Method and apparatus for making paper having the appearance op | ||
GB282620A (en) * | 1926-12-24 | 1928-03-29 | Christiaan Moes | Process and apparatus for the manufacture of paper which possesses properties closely resembling those of hand made paper |
US1761051A (en) * | 1929-01-30 | 1930-06-03 | Wilfrid J Rivard | Deckling machine |
US2026754A (en) * | 1933-02-08 | 1936-01-07 | Celanese Corp | Manipulation of sheet material |
GB551379A (en) * | 1941-08-18 | 1943-02-19 | Standard Register Co | Apparatus for severing a continuous web of material into a succession of sheets |
CH318840A (en) * | 1954-03-16 | 1957-01-31 | Goessler & Cie Ag H | Method and device for the production of paper goods with a deckle edge |
FR2089660A5 (en) * | 1970-04-15 | 1972-01-07 | Du Pont | |
US3666151A (en) * | 1970-08-18 | 1972-05-30 | Du Pont Canada | Apparatus for and method of severing film |
-
1984
- 1984-09-19 GB GB08423674A patent/GB2166996B/en not_active Expired
-
1985
- 1985-09-11 AT AT85111502T patent/ATE68395T1/en active
- 1985-09-11 DE DE8585111502T patent/DE3584411D1/en not_active Expired - Lifetime
- 1985-09-11 EP EP85111502A patent/EP0175276B1/en not_active Expired - Lifetime
- 1985-09-18 JP JP60206189A patent/JPS6186195A/en active Pending
- 1985-09-18 CA CA000491054A patent/CA1256014A/en not_active Expired
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1616211A (en) * | 1927-02-01 | Method and apparatus for making paper having the appearance op | ||
US1470675A (en) * | 1921-10-10 | 1923-10-16 | American Writing Paper Company | Method for making paper having the appearance of handmade paper |
GB282620A (en) * | 1926-12-24 | 1928-03-29 | Christiaan Moes | Process and apparatus for the manufacture of paper which possesses properties closely resembling those of hand made paper |
US1761051A (en) * | 1929-01-30 | 1930-06-03 | Wilfrid J Rivard | Deckling machine |
US2026754A (en) * | 1933-02-08 | 1936-01-07 | Celanese Corp | Manipulation of sheet material |
GB551379A (en) * | 1941-08-18 | 1943-02-19 | Standard Register Co | Apparatus for severing a continuous web of material into a succession of sheets |
CH318840A (en) * | 1954-03-16 | 1957-01-31 | Goessler & Cie Ag H | Method and device for the production of paper goods with a deckle edge |
FR2089660A5 (en) * | 1970-04-15 | 1972-01-07 | Du Pont | |
US3666151A (en) * | 1970-08-18 | 1972-05-30 | Du Pont Canada | Apparatus for and method of severing film |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001002143A1 (en) * | 1999-07-05 | 2001-01-11 | Gevas Verpackungsmaschinen Gmbh | Web of material with detachable strips that are subdivided by separating lines and device for producing the separating lines in the web of material |
CN110238883A (en) * | 2019-07-26 | 2019-09-17 | 益阳市锦汇电子有限公司 | A kind of capacitor production raw material cutting device |
Also Published As
Publication number | Publication date |
---|---|
EP0175276B1 (en) | 1991-10-16 |
GB8423674D0 (en) | 1984-10-24 |
GB2166996B (en) | 1988-01-20 |
CA1256014A (en) | 1989-06-20 |
GB2166996A (en) | 1986-05-21 |
ATE68395T1 (en) | 1991-11-15 |
EP0175276A3 (en) | 1988-03-30 |
DE3584411D1 (en) | 1991-11-21 |
JPS6186195A (en) | 1986-05-01 |
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