CA1147642A - Non-contacting slitter and method - Google Patents
Non-contacting slitter and methodInfo
- Publication number
- CA1147642A CA1147642A CA000365834A CA365834A CA1147642A CA 1147642 A CA1147642 A CA 1147642A CA 000365834 A CA000365834 A CA 000365834A CA 365834 A CA365834 A CA 365834A CA 1147642 A CA1147642 A CA 1147642A
- Authority
- CA
- Canada
- Prior art keywords
- web
- edges
- slitting
- members
- points
- 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.)
- Expired
Links
Landscapes
- Nonmetal Cutting Devices (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Slitting is effected between non-contacting radially opposed slitting edges on rotary upper and lower members between which running paper web to be slit is engaged, the space between the points of closest approach of the edges being sufficiently less than the thickness of the running paper web and so related to the physical properties of the web as to cause compression severance slitting of the web as a result of failure of the web fibers at the point of maximum compression.
Slitting is effected between non-contacting radially opposed slitting edges on rotary upper and lower members between which running paper web to be slit is engaged, the space between the points of closest approach of the edges being sufficiently less than the thickness of the running paper web and so related to the physical properties of the web as to cause compression severance slitting of the web as a result of failure of the web fibers at the point of maximum compression.
Description
This invention relates to the art of slitting paper webs, and is more particularly concerned with new and improved means and methoa which avoids certain problems inherent in prior slitting techniques.
Heretofore, shearin~ of paper web has generally been by means of a sharp beveled top rotating blade running in contact with a relatively lecs sharp bottom band. The angles of the top blade and bottom band may vary, but the top blade usually runs from 30 to 90 degrees included angle. The bottom band has an approximately 3~ to 10 bevel on the cutting surf~ce. Further, in order to effectively shear material, it is necessary to toe-in and overlap the top blade with the bottom band to ensure blade contact at only one point, which is called the cut point, and is the vnly point of contact between the two componen-ts.
As thus described, the prior expedients have been plagued with certain problems which manifes~ themselves not only in the excessive dust generated, but also in a plow effect of the bevel and toe-in of the top blade. Such bevel on the top blade is necessary to reduce the cutting force necessary to shear the paper. Also,a sharp point has a higher concentration o~ load then a ~lat surface. The be~el, however, creates a tension in ~he plane of th~ paper to help sever the fiber. Nevertheless, *he almost inevitable plow effect causes tearing rather than incising of the web and thus contributes to the dust problem, in addition to the dust generated due to slitter blade contact and wear.
Another problem due to slitter wear is that as the blade wears, it is necessary to resharpen the same, thus reducing its diameter. This requires re~uent readjus-tments in an attempt to maintain proper cut point.
A principal aim o~ the present inventi~n is to overcome the Eoregoiny and other disadvantages, drawbacks, inefficiences, shortcomings and problems inherent in prior practice, and to effect substantial improvements in slitting of paper webs.
To this end, it is an important object of the present invention to provide new and improved means for slitting paper webs, in which the slitter components do not make con~act with one another.
Another object of the invention is to substantially ellminate the plow effect during paper web sli~ting.
Another object of the invention is to substantially eliminate the dust problem during paper web slitting.
~ further object of ~he invention is to provide a new and improved paper web slitter in which wear of the slitter components is greatly minimized, and adjustability of components is sl~stantlally simplified and facilitated.
In an embodiment of the invention, a paper web slitter has a pair of cooperating circular rotary members which have periph~ral web slitting edges in non-contacting radial opposition to one another for engaging therebetween a running paper web ~o be slit, the space between the points of closest approach of said edges being sufficiently less than the thickness of the running pape~ web and so related to the physical properties of said web as to cause compression severance slitting of said web, and means acting on said members for maintaining said edge points in compression severance slitting engagement with said web.
The invention also provides a method of slitting a paper web, comprising running sai.d web in engagement between non-contacting radially opposed peripheral web slitting edges of a pair of cooperating circular r~tary members, and maintaining the space between the points of closest approach of said edges sufficiently less than the thickness of said web and 50 related to the physical properties of said web as to cause compressl.on seYerance slitting of said web as the web runs in engagemen~ with said edges.
Other objects, features and advantages o the inventi~n will be readily apparent from the following descripkion of a certain representative embodiment thereof, ~aken LII c~njunction with the accompanying drawing although varia~ions and modifica~ions may be effected without departing from the spirit and scope of the novel concepts embodied in the disclosure and in which:
Fig. 1 is a schematic side elevational view of a slitter and winder emb~dying features of the invention;
Fig. ~ is an enlarged fragmental vertical sectional elevational detail view taken substalltially a.l.ony the line II-II of Fig. l;
Fig. 3 is a fxagmentary elevational view taken sub.stantially in the planè of line III-III of ~ig. 2;
Fig. 4 is an enlarged i.llustrative sectional v.iew taken substantially in the area IV of Fig. 2; and Fig. 5 is a fragmentary schematic illustrative view taken substantially along the lin~ V-V of Fig. 4.
By way of example, a slitter 10 ~ig~ 1) embodying the in~ention is adapted to be supported by a suitable frame 11 -to receive paper web W fed therethrouyh from any suitable source such as a paper making machine,calender,or a source roll (no~ shown).
From the ~ource, the paper web W is adapted to pass about a guide roller 1~ to an~ through the slitter 10, and the slit web leaving the slit-ter and passirq to a shee~er or any other desired process, or may be ~uicled about a drum 13 and wound into rolls 14 which may in addition to support from the dr~n 13, receive support from a cooperating drum 15. l'he drl~m 13 may be powered in any desirable manner, represented schematically by the drive means 17.
The slitter 10 may be equipped ko slit the web W into as many strips to be wound on the individual rolls 14 as deslred, havi~g re~ard to the kind of paper web being processed. By the term "paper web" any kind of paper web is intended which is susceptible ~o being slit by the slitter 10. A characteristic of a-l paper webs is that they comprise fiber matrix as the principal material although various treating materlals, fillers and the like may be carried by or incorporatecl in the web. By the term "web"
is meant either a single layer web or a plurality of individually formed webs which may pass through the slitter 10 in laminar relation~
as depicted by way of illustration in the drawings, such as facial or toilet tissue or fine paper for a sheeter~ and which is often employed in double thickness.
In the slitter 10, the web ~ is slit hetween one or more pairs of cooperating circular rotary components or mem'oers, comprising for each slit to ~e made, a top member 18 and a bottom member 19. As .is generally the case, a plurality of pairs of the slitter members 18 and 19 is employed across ~he width of the web W, one pair being adjacent to one longitudinal side edge o the web, and another pair being adjacent to the opposite side edge of the web and serving to trim off the side edge portions of the web which may be discarded. One or more pairs of the slitter members are located at additional desired intervals across the web determinative of the width of the strips into which the web is to be slit. Although each of the rotary slitter members 18 and 1~ may be separately , xotatably mounted, all of the upper members 18 may be mounted corotatively on a common shaft 20 and all of the lower members 19 may be corotatively mounted on a common shaft 21. Preferably, both of the shafts 20 and 21 are driven but for some applications only the lower shaft 21 may be driven at the speed predetermined for the running speed of the web W. Where both the top and bottom members 18 and 19 are driven, a desirable slicing effect results.
; No particular driving means are shown for the shafts 20 and 21 because such driving means are well known. Supported journalling of the shaft 21 on the frame 11 is by means of suitable bearings 22 at opposite ends of the shaft.
Mounting of the upper shaft 20 may be by means which will permit vertical adjustment o~ the upper slitter members 18 relative to the companion lower slitter members 19. Such means may comprise respective bearing blocks 23 carrying the opposite ends of the sha~t 20 and vertically adjustable in respective vertical ways 2~ b~ means such as respective adjustment screws25 carried by a supporting frame head 27 and adapted to be locked in adjustment by means of locking nuts 28. On the other hand, the upper slitter com-ponents 18 may be individually adjustable. In any event, the members 18 and 19 and their shafts 20 and 21 should be supported in a rigid and sturdy manner, to as nearly as practicable, avoid deflection of the slitter components, and in particular at the edges 29 and 30.
According to the present invention, each of the upper slitting members has a pe.riphera~ web slitting edge 29 and each of the lower slitting members 19 has a pexipheral web slitting edge 30 and the edges 29 and 30 are in non-contacting radial opposition to one another for enyaging therebetween the running pap~r web W to be slit. The space between the points of closest approach of the edges 29 and 30 must be sufficiently less than the thickness of the running paper web W and so related to ~he physical properties of the web as to cause compression severance slitting of the web.
For maximum resistance to wear, such as may be caused by abrasiveness in the paper web, the edges 2~ and 30 may be provided on highly wear resistant material such as carbide rings 31 and 32, respectively, carried by the bodies of the members 18 and 19 constructed from a less expensive material.
For optimum results, the perimeters of the members 18 and 19 should have only a very shallow angle relative ~o the cutting edges 29 and 30 of from 0 to ~0. rrhe smaller the angle the better. Overlap of the non-contacting edges 29 and 30 in axial direction where, as best seen in Figs. 2 and 4, the edges 29 and 30 are at the adjacent axial faces of the members 18 an~ 19, should be as little as practicabl~ such as from 0 to .010 inch.
For best results, the radial spacing between the edges 29 and 30 should be no greater than 0-30% of the thickness of the web.
Proper radial spacing and then maintenance OI the edges 29 and 30 in the optimum compression .severance slitting engagement with the web is adapted to be accomplished by means of the adjustment screws 25 or individual adjustmen~ of the m~ers 18 and 19.
Supporti~g table means 33 supports the web W in stable condition, and for this purpose~ the upper supporting surface of the table means is in ~ proper plane with respect to the edges 29 and 30~ Suitable clearance openings 34 in the table 33 provide clearance for the lower members 19.
As best visualized in Figs. 4 and 5, as the web runs through the rotating ~ooperating eircul~r rotary slitter members 18 and 19, the non-contactin~ slitting edges 29 and 30 at the closest approach or severance point of the edges severely compress the engaged web and compact the fibers from the web t.hickness, as indicated between the arrows T (Fig. 5), to the extent indicated between the arrows S Ishown as about 30~) so that fiber failure is caused and thus severance of the web along the slit line. By this method, there is minimum tens.ion in the plane of the web, so that tearing is precluded. There is practically no plowing effect.
Dust is substantially eliminated or at least greatly minimi~ed.
The to~and bottom slitter members 18 and 19 can be preadjusted transversely relative to the web to attain the desired strip widths of the slit web. Adjustment of the radial spacing at the severance points between the slitting edges 29 and 30 relative to the particular web to be slit, can be readily effected by adjusting all of the upper members 18 in unison relative to the lower mem~ers 19. Vertical loading of the slitter me~ers 18 and 19 relative to one another may be on the order of from 200 to 800 pli at said points of closest approach in severance engagement with the web and depending on the physical character and thickness of the particular web to be slit.
~ mong numerous advanta~es inherent in the web slitter and method of slitting according to the present invention may be mentioned that no side loading of slitter blades is necessary; no penetration adjustmerrt. of slitter blades is necessary;
there is no wear caused by knife contact; the web or web strips may be wrapped around the upper or bottom slitter members, if desired; cross machine adjustmen-~ of the top and bottom slitter members may be effected while ~he web is in the slitter; there i5 maximum slitter member life; ~he upper and lower slitter members need not be adjusted in axial direction even though some adjustment may be necesaary from time-to-time in the radial ~ direction.
: It will be understQod that variations and modifications may be effected without departing from the spirit and scope o the novel concepts of this invention.
~8--. . . .. .
Heretofore, shearin~ of paper web has generally been by means of a sharp beveled top rotating blade running in contact with a relatively lecs sharp bottom band. The angles of the top blade and bottom band may vary, but the top blade usually runs from 30 to 90 degrees included angle. The bottom band has an approximately 3~ to 10 bevel on the cutting surf~ce. Further, in order to effectively shear material, it is necessary to toe-in and overlap the top blade with the bottom band to ensure blade contact at only one point, which is called the cut point, and is the vnly point of contact between the two componen-ts.
As thus described, the prior expedients have been plagued with certain problems which manifes~ themselves not only in the excessive dust generated, but also in a plow effect of the bevel and toe-in of the top blade. Such bevel on the top blade is necessary to reduce the cutting force necessary to shear the paper. Also,a sharp point has a higher concentration o~ load then a ~lat surface. The be~el, however, creates a tension in ~he plane of th~ paper to help sever the fiber. Nevertheless, *he almost inevitable plow effect causes tearing rather than incising of the web and thus contributes to the dust problem, in addition to the dust generated due to slitter blade contact and wear.
Another problem due to slitter wear is that as the blade wears, it is necessary to resharpen the same, thus reducing its diameter. This requires re~uent readjus-tments in an attempt to maintain proper cut point.
A principal aim o~ the present inventi~n is to overcome the Eoregoiny and other disadvantages, drawbacks, inefficiences, shortcomings and problems inherent in prior practice, and to effect substantial improvements in slitting of paper webs.
To this end, it is an important object of the present invention to provide new and improved means for slitting paper webs, in which the slitter components do not make con~act with one another.
Another object of the invention is to substantially ellminate the plow effect during paper web sli~ting.
Another object of the invention is to substantially eliminate the dust problem during paper web slitting.
~ further object of ~he invention is to provide a new and improved paper web slitter in which wear of the slitter components is greatly minimized, and adjustability of components is sl~stantlally simplified and facilitated.
In an embodiment of the invention, a paper web slitter has a pair of cooperating circular rotary members which have periph~ral web slitting edges in non-contacting radial opposition to one another for engaging therebetween a running paper web ~o be slit, the space between the points of closest approach of said edges being sufficiently less than the thickness of the running pape~ web and so related to the physical properties of said web as to cause compression severance slitting of said web, and means acting on said members for maintaining said edge points in compression severance slitting engagement with said web.
The invention also provides a method of slitting a paper web, comprising running sai.d web in engagement between non-contacting radially opposed peripheral web slitting edges of a pair of cooperating circular r~tary members, and maintaining the space between the points of closest approach of said edges sufficiently less than the thickness of said web and 50 related to the physical properties of said web as to cause compressl.on seYerance slitting of said web as the web runs in engagemen~ with said edges.
Other objects, features and advantages o the inventi~n will be readily apparent from the following descripkion of a certain representative embodiment thereof, ~aken LII c~njunction with the accompanying drawing although varia~ions and modifica~ions may be effected without departing from the spirit and scope of the novel concepts embodied in the disclosure and in which:
Fig. 1 is a schematic side elevational view of a slitter and winder emb~dying features of the invention;
Fig. ~ is an enlarged fragmental vertical sectional elevational detail view taken substalltially a.l.ony the line II-II of Fig. l;
Fig. 3 is a fxagmentary elevational view taken sub.stantially in the planè of line III-III of ~ig. 2;
Fig. 4 is an enlarged i.llustrative sectional v.iew taken substantially in the area IV of Fig. 2; and Fig. 5 is a fragmentary schematic illustrative view taken substantially along the lin~ V-V of Fig. 4.
By way of example, a slitter 10 ~ig~ 1) embodying the in~ention is adapted to be supported by a suitable frame 11 -to receive paper web W fed therethrouyh from any suitable source such as a paper making machine,calender,or a source roll (no~ shown).
From the ~ource, the paper web W is adapted to pass about a guide roller 1~ to an~ through the slitter 10, and the slit web leaving the slit-ter and passirq to a shee~er or any other desired process, or may be ~uicled about a drum 13 and wound into rolls 14 which may in addition to support from the dr~n 13, receive support from a cooperating drum 15. l'he drl~m 13 may be powered in any desirable manner, represented schematically by the drive means 17.
The slitter 10 may be equipped ko slit the web W into as many strips to be wound on the individual rolls 14 as deslred, havi~g re~ard to the kind of paper web being processed. By the term "paper web" any kind of paper web is intended which is susceptible ~o being slit by the slitter 10. A characteristic of a-l paper webs is that they comprise fiber matrix as the principal material although various treating materlals, fillers and the like may be carried by or incorporatecl in the web. By the term "web"
is meant either a single layer web or a plurality of individually formed webs which may pass through the slitter 10 in laminar relation~
as depicted by way of illustration in the drawings, such as facial or toilet tissue or fine paper for a sheeter~ and which is often employed in double thickness.
In the slitter 10, the web ~ is slit hetween one or more pairs of cooperating circular rotary components or mem'oers, comprising for each slit to ~e made, a top member 18 and a bottom member 19. As .is generally the case, a plurality of pairs of the slitter members 18 and 19 is employed across ~he width of the web W, one pair being adjacent to one longitudinal side edge o the web, and another pair being adjacent to the opposite side edge of the web and serving to trim off the side edge portions of the web which may be discarded. One or more pairs of the slitter members are located at additional desired intervals across the web determinative of the width of the strips into which the web is to be slit. Although each of the rotary slitter members 18 and 1~ may be separately , xotatably mounted, all of the upper members 18 may be mounted corotatively on a common shaft 20 and all of the lower members 19 may be corotatively mounted on a common shaft 21. Preferably, both of the shafts 20 and 21 are driven but for some applications only the lower shaft 21 may be driven at the speed predetermined for the running speed of the web W. Where both the top and bottom members 18 and 19 are driven, a desirable slicing effect results.
; No particular driving means are shown for the shafts 20 and 21 because such driving means are well known. Supported journalling of the shaft 21 on the frame 11 is by means of suitable bearings 22 at opposite ends of the shaft.
Mounting of the upper shaft 20 may be by means which will permit vertical adjustment o~ the upper slitter members 18 relative to the companion lower slitter members 19. Such means may comprise respective bearing blocks 23 carrying the opposite ends of the sha~t 20 and vertically adjustable in respective vertical ways 2~ b~ means such as respective adjustment screws25 carried by a supporting frame head 27 and adapted to be locked in adjustment by means of locking nuts 28. On the other hand, the upper slitter com-ponents 18 may be individually adjustable. In any event, the members 18 and 19 and their shafts 20 and 21 should be supported in a rigid and sturdy manner, to as nearly as practicable, avoid deflection of the slitter components, and in particular at the edges 29 and 30.
According to the present invention, each of the upper slitting members has a pe.riphera~ web slitting edge 29 and each of the lower slitting members 19 has a pexipheral web slitting edge 30 and the edges 29 and 30 are in non-contacting radial opposition to one another for enyaging therebetween the running pap~r web W to be slit. The space between the points of closest approach of the edges 29 and 30 must be sufficiently less than the thickness of the running paper web W and so related to ~he physical properties of the web as to cause compression severance slitting of the web.
For maximum resistance to wear, such as may be caused by abrasiveness in the paper web, the edges 2~ and 30 may be provided on highly wear resistant material such as carbide rings 31 and 32, respectively, carried by the bodies of the members 18 and 19 constructed from a less expensive material.
For optimum results, the perimeters of the members 18 and 19 should have only a very shallow angle relative ~o the cutting edges 29 and 30 of from 0 to ~0. rrhe smaller the angle the better. Overlap of the non-contacting edges 29 and 30 in axial direction where, as best seen in Figs. 2 and 4, the edges 29 and 30 are at the adjacent axial faces of the members 18 an~ 19, should be as little as practicabl~ such as from 0 to .010 inch.
For best results, the radial spacing between the edges 29 and 30 should be no greater than 0-30% of the thickness of the web.
Proper radial spacing and then maintenance OI the edges 29 and 30 in the optimum compression .severance slitting engagement with the web is adapted to be accomplished by means of the adjustment screws 25 or individual adjustmen~ of the m~ers 18 and 19.
Supporti~g table means 33 supports the web W in stable condition, and for this purpose~ the upper supporting surface of the table means is in ~ proper plane with respect to the edges 29 and 30~ Suitable clearance openings 34 in the table 33 provide clearance for the lower members 19.
As best visualized in Figs. 4 and 5, as the web runs through the rotating ~ooperating eircul~r rotary slitter members 18 and 19, the non-contactin~ slitting edges 29 and 30 at the closest approach or severance point of the edges severely compress the engaged web and compact the fibers from the web t.hickness, as indicated between the arrows T (Fig. 5), to the extent indicated between the arrows S Ishown as about 30~) so that fiber failure is caused and thus severance of the web along the slit line. By this method, there is minimum tens.ion in the plane of the web, so that tearing is precluded. There is practically no plowing effect.
Dust is substantially eliminated or at least greatly minimi~ed.
The to~and bottom slitter members 18 and 19 can be preadjusted transversely relative to the web to attain the desired strip widths of the slit web. Adjustment of the radial spacing at the severance points between the slitting edges 29 and 30 relative to the particular web to be slit, can be readily effected by adjusting all of the upper members 18 in unison relative to the lower mem~ers 19. Vertical loading of the slitter me~ers 18 and 19 relative to one another may be on the order of from 200 to 800 pli at said points of closest approach in severance engagement with the web and depending on the physical character and thickness of the particular web to be slit.
~ mong numerous advanta~es inherent in the web slitter and method of slitting according to the present invention may be mentioned that no side loading of slitter blades is necessary; no penetration adjustmerrt. of slitter blades is necessary;
there is no wear caused by knife contact; the web or web strips may be wrapped around the upper or bottom slitter members, if desired; cross machine adjustmen-~ of the top and bottom slitter members may be effected while ~he web is in the slitter; there i5 maximum slitter member life; ~he upper and lower slitter members need not be adjusted in axial direction even though some adjustment may be necesaary from time-to-time in the radial ~ direction.
: It will be understQod that variations and modifications may be effected without departing from the spirit and scope o the novel concepts of this invention.
~8--. . . .. .
Claims (13)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a paper web slitter having a pair of cooperating circular rotary members:
said members having peripheral web slitting edges in non-contacting radial opposition to one another for engaging therebetween a running paper web to be slit;
the space between the points of closest approach of said edges being sufficiently less than the thickness of the running paper web and so related to the physical properties of said web as to cause compression severance slitting of said web;
and means acting on said members for maintaining said edge points in compression severance slitting engagement with said web.
said members having peripheral web slitting edges in non-contacting radial opposition to one another for engaging therebetween a running paper web to be slit;
the space between the points of closest approach of said edges being sufficiently less than the thickness of the running paper web and so related to the physical properties of said web as to cause compression severance slitting of said web;
and means acting on said members for maintaining said edge points in compression severance slitting engagement with said web.
2. A paper web slitter according to claim 1, wherein said web slitting edges are located at the convergence of circumferential and axial surfaces of said members.
3. A paper web slitter according to claim 2, wherein said peripheral surfaces extend from said edges in a range of from 0 to 20°.
4. A paper web slitter according to claim 1, in which axial overlap of the peripheries of said members at said slitting edges is not in excess of .010 inch.
5. A paper web slitter according to claim 1, in which the space between the points of closest approach of said edges is not in excess of 30% of the thickness of the paper web.
6. A paper web slitter according to claim 1, including means for supporting the web in a plane aligned with said points of closest approach of said edges whereby to minimize tension in the plane of the web.
7. A method of slitting a paper web, comprising:
running said web in engagement between non-contacting radially opposed peripheral web slitting edges of a pair of cooperating circular rotary members;
and maintaining the space between the points of closest approach of said edges sufficiently less than the thickness of said web and so related to the physical properties of said web as to cause compression severance slitting of said web as the web runs in engagement with said edges.
running said web in engagement between non-contacting radially opposed peripheral web slitting edges of a pair of cooperating circular rotary members;
and maintaining the space between the points of closest approach of said edges sufficiently less than the thickness of said web and so related to the physical properties of said web as to cause compression severance slitting of said web as the web runs in engagement with said edges.
8. A method according to claim 7, comprising adjusting axial overlap of theperipheries of said members at said slitting edges to be not in excess of .010 inch.
9. A method according to claim 7, comprising adjusting the space between the points of closest approach of said edges to be not in excess of about 30% of the thickness of the paper web.
10. A method according to claim 7, comprising supporting the running web in a plane aligned with said points of closest approach of said edges whereby to at least minimize tension in the plane of the web as the slitting progresses.
11. A method according to claim 7, comprising loading said members relative to one another to apply a pressure of from 200 to 800 pli at said points of closest approach in severance engagement with the web.
12. A method according to claim 7, which comprises driving both of said pair of cooperating circular rotary members and thereby effecting a slicing effect in the severance slitting of said web.
13. A method according to claim 7, which comprises supporting said cooperating circular rotary members in a rigid and sturdy manner and thereby as nearly as practicable avoiding deflection of said member, and in particular said edges in compression severance slitting engagement with said web.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US9957279A | 1979-12-03 | 1979-12-03 | |
| US99,572 | 1979-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1147642A true CA1147642A (en) | 1983-06-07 |
Family
ID=22275651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000365834A Expired CA1147642A (en) | 1979-12-03 | 1980-12-01 | Non-contacting slitter and method |
Country Status (2)
| Country | Link |
|---|---|
| JP (2) | JPS5695599A (en) |
| CA (1) | CA1147642A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562628A (en) * | 1984-04-25 | 1986-01-07 | U.S. Philips Corporation | Method for manufacturing multilayer ceramic capacitors |
| WO2014190446A1 (en) * | 2013-05-31 | 2014-12-04 | Can Man Ag | Shears |
| CN114346123A (en) * | 2021-12-30 | 2022-04-15 | 维达力实业(深圳)有限公司 | Pressure shearing mechanism and shearing device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61112893U (en) * | 1984-12-27 | 1986-07-17 | ||
| JP2005288674A (en) * | 2004-03-31 | 2005-10-20 | Kotobuki Seisakusho:Kk | Cutter for slitter device, and slitter device using the cutter |
| JP2006021312A (en) * | 2004-07-09 | 2006-01-26 | Kotobuki Seisakusho:Kk | Thin band-shaped material slit-machining method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5131545B2 (en) * | 1971-08-05 | 1976-09-07 |
-
1980
- 1980-12-01 CA CA000365834A patent/CA1147642A/en not_active Expired
- 1980-12-03 JP JP16971080A patent/JPS5695599A/en active Pending
-
1983
- 1983-08-09 JP JP12289383U patent/JPS5946697U/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562628A (en) * | 1984-04-25 | 1986-01-07 | U.S. Philips Corporation | Method for manufacturing multilayer ceramic capacitors |
| WO2014190446A1 (en) * | 2013-05-31 | 2014-12-04 | Can Man Ag | Shears |
| CN114346123A (en) * | 2021-12-30 | 2022-04-15 | 维达力实业(深圳)有限公司 | Pressure shearing mechanism and shearing device |
| CN114346123B (en) * | 2021-12-30 | 2024-04-05 | 维达力实业(深圳)有限公司 | Pressure shear mechanism and shear and unload device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5946697U (en) | 1984-03-28 |
| JPS5695599A (en) | 1981-08-03 |
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