WO1989004746A1 - Circular slitting knife - Google Patents

Circular slitting knife Download PDF

Info

Publication number
WO1989004746A1
WO1989004746A1 PCT/SE1988/000594 SE8800594W WO8904746A1 WO 1989004746 A1 WO1989004746 A1 WO 1989004746A1 SE 8800594 W SE8800594 W SE 8800594W WO 8904746 A1 WO8904746 A1 WO 8904746A1
Authority
WO
WIPO (PCT)
Prior art keywords
slitting
circular
rings
blade
slitting knife
Prior art date
Application number
PCT/SE1988/000594
Other languages
French (fr)
Inventor
Ove Larsson
Sten Larsson
Original Assignee
Ove Larsson
Sten Larsson
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ove Larsson, Sten Larsson filed Critical Ove Larsson
Publication of WO1989004746A1 publication Critical patent/WO1989004746A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/22—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a movable member, e.g. a roller
    • B26D1/225—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a movable member, e.g. a roller for thin material, e.g. for sheets, strips or the like

Definitions

  • the present invention relates to a circular slitting knife, particularly a circular slitting knife, which is designed to slit relatively soft plain or composite ma ⁇ terials, e.g. textile, paper, plastic materials or a com ⁇ bination of such materials.
  • Said circular slitting knife is designed to work against a counter pressure cylinder, e.g. made of a plastic, a rubber or a comparable material.
  • Swedish printed publication 394 091 relates to a slitting device having a circular rotating slitting knife.
  • this device two circular discs made of an elastic material are disposed on either side of the rotary slitting knife.
  • the diameter of the discs of an elastic material is somewhat smaller than the diameter of the rotary slitting knife. Since the slitting is done in grooves and said circular discs of an elastic material run along the edges of the groove, the slitting edge is caused to run with a higher circumferential speed than if the edge would run against a firm support and provided the translational speed of the shaft of the slitting knife would be the same.
  • This slitting device is at a disadvantage partly because it has to run in a groove and partly because it must be made com ⁇ paratively thick, if hard materials, e.g. hard metals, are to be used.
  • German printed publication 3 446 161 relates to a 'slitting device having a circular slitting knife, which to a certain degree is laterally supported by means of, in relation to the slitting knife, partly elastically mounted and partly rigidly mounted elements. Said lateral supporting elements are designed partly to avoid a waved deformation of the slitting knife and partly to brake the knife to some ex ⁇ tent. This device is hardly suitable when thin discs made of e.g. a hard metal are to be used, since the lateral support is unsymmetrically distributed in relation to the central skaft of the slitting knife.
  • USP 3 358 370, 4 086 835 and 3 293 962 re ⁇ late to slitting devices having disc-shaped slitting knives or having knives designed as ring-shaped slitting knives on slitting cylinders.
  • These specifications relate to slitting devices,- which are at a disadvantage either because the slitting knife must perform in a groove or is provided with slitting teeth.
  • the grooves must be designed differently for different materials to be slit and when the slitting is done by toothed slitting knives, the toothing ought to be matched with the material to be slit.
  • the object of the present invention is to provide an im ⁇ proved circular slitting knife of the kind described above.
  • the improvement which we try to attain in the first place is to eliminate the disadvantages of known constructions.
  • the desired result is attained by designing the circular slitting knife in such a way, that it will include a thin circular slitting blade having an edge and on either side of this slitting edge rings or discs made of a rubber or a plastic material. Said rings or discs are pressed agains the slitting blade by means of clamping tools, such as outer metal plates or the like.
  • One of the characterizing features of the circular slit ⁇ ting knife according to the invention is the combination of the thin blade having an edge, the rings or plates made of a rubber or a plastic material as well as clamp- ing tools such as outer metal plates or the like. Another characterizing feature is that said rubber rings or plates do not have to be fastened to the slitting blade by curing.
  • said circular slitting knife can be used to slit various composite soft materials, such as textile materi ⁇ als, paper materials, plastic materials etc. as well as various composite materials.
  • Fig. 1 is a central longitudinal section along the rota ⁇ tional shaft of r . circular slitting, knife;
  • Fig. 1 B shows, scaled up, the deformation of the elastic plates, when a slitting is done according to a preferred embodiment;
  • FIG. 1 A shows the same detail as in Fig. 1 B, when the circular slitting knife is removed from the holding-on cy ⁇ linder and consequently is not slitting;
  • Fig. 2 shows details corresponding to the details shown in Fig. 1 A and 1 B, according to an additional preferred embodiment;
  • Fig. 3 is a perspective exploded view of the circular slit ⁇ ting knife and devices which support the circular slitting knife;
  • Fig. 4 shows a plurality of circular slitting knives, which are mounted to simultaneously slit a passing web material into a plurality of narrow strips (tapes) .
  • the circular slitting knife comprises a circular blade 1 made of a hard metal or possibly of a metal having a hard metal edge and on either side of said blade a ring, 2 re ⁇ spectively lymade of a rubber or a plastic material, e.g. polyurethane. Rubber rings 2,3 are clamped by outer metal plates 4,5.
  • rings 2,3 taper towards the edge.
  • the tips of rings 2,3 cover the edge of slitting blade 1 and conse- quently said edge can not be damaged or the operator canno be hurt by the edge.
  • slitting rings 2,3 are pressed inwardly and somewhat outwardly and consequently the edge is set free as is shown in Fig. 1 B.
  • slit edge surfaces rend to separate.
  • the embodiment shown in Fig. 1 is used e.g. to slit textile materials 14, such as fabrics and cloths.
  • Fig. 3 is an exploded view of the circular slitting knife according to Fig. 1.
  • Outer metal plate 4 is provided with a tubular shaft having an inner thread.
  • a screw 6 has a thread, which corresponds to said inner thread.
  • outer metal plates 4,5,slitting blade 1, rings 2,3 as well as two ball bearings 7A,7B belonging to said inner rings can be secured to each other, a unit boun together being obtained thereby.
  • Outer metal plate 4 is provided with two holes 19A,19B, which allow plate 4 to be fastened, when screw 6 is tightened.
  • the ball bearings are mounted in a press arm 8, which by means of an eccent- ric 10, a counter spring, not shown in the figure, as well as arm 11 can be rotated in any direction about a shaft 20 and be fastened in two positions. Consequently, by switching arm 11 the circular slitting knife can be pressed against a nylon cylinder 15 or be removed from cylinder 15.
  • Blade 1 has a thickness of just 0.3 mm and a diameter of 45 mm.
  • the slitting is done against a holding-on cylinder made of nylon in the embodiment shown in Fig. 1.
  • the edge penetrates into the nylon cylinder just a few tenths of a millimeter.
  • Fig. 2 shows a modified embodiment, designed to slit a pa- per 14'.
  • rather thick paper materials or seve ⁇ ral layers can be slit.
  • Rings 2,3 in Fig. 1 may also be turned round, the sharp edges thereby being placed outwardly instead of contacting blade 1.
  • the rubber rings assist in the rotation of the knife.
  • rubber rings or plastic rings 2,3 assist in protecting thin blade 1 against breaking.
  • rings 2,3 of a plastic or a rubber material are ex ⁇ cluded or are replaced by metal rings, thin blade 1 is broken after it has been used for a short period of time. The breaking probably is caused by strong vibrations, which are reduced by means of rings 2,3 or 2', 3' in Fig. 2.
  • metal plates does not solve the breaking problem, when e.g. thin hard metal discs are used.
  • hoi- ding-on cylinder 15 is made of a hard polyurethane.
  • press arm 8 is mounted on an arm holder 9, which in its turn is slidably mounted on a guide 16.
  • Guide 16 is pro ⁇ vided with a wedge control, which ensures, that arm hol ⁇ der 9 does not rotate about guide 16.
  • Arm holder 9 can by means of a lock arm 13 be locked in any desired posi ⁇ tion on guide 16.
  • Fig. 4 shows how a plurality of circular slitting knives according to the invention can be used to slit a band-like web material into five parts.
  • Web material 14 is pulled in the direction indicated by the arrow, while it is con- tacting holding-on cylinder 15.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nonmetal Cutting Devices (AREA)

Abstract

A circular slitting knife, particularly a circular slitting knife, which is designed to slit relatively soft plain or composite materials, such as textile, paper or plastic materials or the like materials. Said circular slitting knife is designed to work against a holding-on cylinder (15), possibly made of a plastic, rubber or comparable material. Said circular slitting knife has a thin circular slitting blade (1). On either side of said slitting blade rings (2, 3) or discs made of a rubber or a plastic material are mounted. Said rings or discs are pressed against said slitting blade by means of clamping devices, such as outer metal plates (4, 5) or the like.

Description

CIRCULAR SLITTING KNIFE
TECHNICAL FIELD The present invention relates to a circular slitting knife, particularly a circular slitting knife, which is designed to slit relatively soft plain or composite ma¬ terials, e.g. textile, paper, plastic materials or a com¬ bination of such materials. Said circular slitting knife is designed to work against a counter pressure cylinder, e.g. made of a plastic, a rubber or a comparable material.
THE STATE OF THE ART
Swedish printed publication 394 091 relates to a slitting device having a circular rotating slitting knife. In this device two circular discs made of an elastic material are disposed on either side of the rotary slitting knife. The diameter of the discs of an elastic material is somewhat smaller than the diameter of the rotary slitting knife. Since the slitting is done in grooves and said circular discs of an elastic material run along the edges of the groove, the slitting edge is caused to run with a higher circumferential speed than if the edge would run against a firm support and provided the translational speed of the shaft of the slitting knife would be the same. This slitting device is at a disadvantage partly because it has to run in a groove and partly because it must be made com¬ paratively thick, if hard materials, e.g. hard metals, are to be used.
German printed publication 3 446 161 relates to a 'slitting device having a circular slitting knife, which to a certain degree is laterally supported by means of, in relation to the slitting knife, partly elastically mounted and partly rigidly mounted elements. Said lateral supporting elements are designed partly to avoid a waved deformation of the slitting knife and partly to brake the knife to some ex¬ tent. This device is hardly suitable when thin discs made of e.g. a hard metal are to be used, since the lateral support is unsymmetrically distributed in relation to the central skaft of the slitting knife.
Furthermore, USP 3 358 370, 4 086 835 and 3 293 962 re¬ late to slitting devices having disc-shaped slitting knives or having knives designed as ring-shaped slitting knives on slitting cylinders. These specifications relate to slitting devices,- which are at a disadvantage either because the slitting knife must perform in a groove or is provided with slitting teeth. When the slitting is done in grooves, the grooves must be designed differently for different materials to be slit and when the slitting is done by toothed slitting knives, the toothing ought to be matched with the material to be slit.
Generally when slitting textile materials by means of slitting devices according to the above-mentioned speci¬ fications as well as generally when known slitting devices are used, as a rule a lot of fluff is obtained and conse¬ quently uneven edges having a fdulty finish.
A DESCRIPTION OF THE INVENTION
The object of the present invention is to provide an im¬ proved circular slitting knife of the kind described above. The improvement which we try to attain in the first place is to eliminate the disadvantages of known constructions. The desired result is attained by designing the circular slitting knife in such a way, that it will include a thin circular slitting blade having an edge and on either side of this slitting edge rings or discs made of a rubber or a plastic material. Said rings or discs are pressed agains the slitting blade by means of clamping tools, such as outer metal plates or the like. One of the characterizing features of the circular slit¬ ting knife according to the invention is the combination of the thin blade having an edge, the rings or plates made of a rubber or a plastic material as well as clamp- ing tools such as outer metal plates or the like. Another characterizing feature is that said rubber rings or plates do not have to be fastened to the slitting blade by curing.
Generally said circular slitting knife can be used to slit various composite soft materials, such as textile materi¬ als, paper materials, plastic materials etc. as well as various composite materials.
Additional characterizing features of the present inven- tion and advantages of it will be set forth in the follow¬ ing description as well as in the following patent claims.
A BRIEF DESCRIPTION OF THE DRAWINGS
In the following description reference is made to the accompanying drawings, in which:
Fig. 1 is a central longitudinal section along the rota¬ tional shaft of r . circular slitting, knife; Fig. 1 B shows, scaled up, the deformation of the elastic plates, when a slitting is done according to a preferred embodiment;
Fig. 1 A shows the same detail as in Fig. 1 B, when the circular slitting knife is removed from the holding-on cy¬ linder and consequently is not slitting; Fig. 2 shows details corresponding to the details shown in Fig. 1 A and 1 B, according to an additional preferred embodiment;
Fig. 3 is a perspective exploded view of the circular slit¬ ting knife and devices which support the circular slitting knife; and
Fig. 4 shows a plurality of circular slitting knives, which are mounted to simultaneously slit a passing web material into a plurality of narrow strips (tapes) .
A DESCRIPTION OF PREFERRED EMBODIMENTS The circular slitting knife comprises a circular blade 1 made of a hard metal or possibly of a metal having a hard metal edge and on either side of said blade a ring, 2 re¬ spectively lymade of a rubber or a plastic material, e.g. polyurethane. Rubber rings 2,3 are clamped by outer metal plates 4,5.
According to a first preferred embodiment, which is shown in Fig. 1 B; rings 2,3 taper towards the edge. The tips of rings 2,3 cover the edge of slitting blade 1 and conse- quently said edge can not be damaged or the operator canno be hurt by the edge. During slitting rings 2,3 are pressed inwardly and somewhat outwardly and consequently the edge is set free as is shown in Fig. 1 B.
Also, since the rubber or plastic material which rings 2,3 are made of is pressed outwardly, the slit edge surfaces rend to separate. The embodiment shown in Fig. 1 is used e.g. to slit textile materials 14, such as fabrics and cloths.
Fig. 3 is an exploded view of the circular slitting knife according to Fig. 1. Outer metal plate 4 is provided with a tubular shaft having an inner thread. A screw 6 has a thread, which corresponds to said inner thread. By means of -. screw" 6 outer metal plates 4,5,slitting blade 1, rings 2,3 as well as two ball bearings 7A,7B belonging to said inner rings can be secured to each other, a unit boun together being obtained thereby. Outer metal plate 4 is provided with two holes 19A,19B, which allow plate 4 to be fastened, when screw 6 is tightened. The ball bearings are mounted in a press arm 8, which by means of an eccent- ric 10, a counter spring, not shown in the figure, as well as arm 11 can be rotated in any direction about a shaft 20 and be fastened in two positions. Consequently, by switching arm 11 the circular slitting knife can be pressed against a nylon cylinder 15 or be removed from cylinder 15.
Blade 1 has a thickness of just 0.3 mm and a diameter of 45 mm. The slitting is done against a holding-on cylinder made of nylon in the embodiment shown in Fig. 1. The edge penetrates into the nylon cylinder just a few tenths of a millimeter.
Fig. 2 shows a modified embodiment, designed to slit a pa- per 14'. In this case rather thick paper materials or seve¬ ral layers can be slit. As many as 15 sheets having a
2 surface weight of 70 g/cm have been slit successfully.
In this case those portions of rubber rings 2,3, which taper towards the edge, have been removed.
Rings 2,3 in Fig. 1 may also be turned round, the sharp edges thereby being placed outwardly instead of contacting blade 1. In this embodiment the rubber rings assist in the rotation of the knife.
In all the embodiments rubber rings or plastic rings 2,3 assist in protecting thin blade 1 against breaking. In case rings 2,3 of a plastic or a rubber material are ex¬ cluded or are replaced by metal rings, thin blade 1 is broken after it has been used for a short period of time. The breaking probably is caused by strong vibrations, which are reduced by means of rings 2,3 or 2', 3' in Fig. 2. To solely use metal plates does not solve the breaking problem, when e.g. thin hard metal discs are used.
When paper materials are slit according to Fig. 2, hoi- ding-on cylinder 15 is made of a hard polyurethane.
In the embodiment shown in the exploded view. Fig. 3, press arm 8 is mounted on an arm holder 9, which in its turn is slidably mounted on a guide 16. Guide 16 is pro¬ vided with a wedge control, which ensures, that arm hol¬ der 9 does not rotate about guide 16. Arm holder 9 can by means of a lock arm 13 be locked in any desired posi¬ tion on guide 16.
Fig. 4 shows how a plurality of circular slitting knives according to the invention can be used to slit a band-like web material into five parts. Web material 14 is pulled in the direction indicated by the arrow, while it is con- tacting holding-on cylinder 15.
A few embodiments and modifications thereof have been de¬ scribed above. Other modifications of the described embo¬ diments than the ones "stated above are possible without deviating from the general principles of the present in¬ vention and without said modifications resulting in the modified device ending up beyond the scope of the patent claims as set forth on the following pages.

Claims

PATENT CLAIMS
1. A circular slitting knife, designed to work against a holding-on cylinder (15) made of a plastic, a rubber or a composite material, in order to slit relatively soft ma¬ terials, such as textile, paper, plastic or similar mate¬ rials or combinations of such materials (14) , c h a r a c t e r i z e d in that said circular slitting knife comp¬ rises a thin circular slitting blade (1) having an edge and on either side of this slitting blade rings or discs made of a rubber or a plastic material (2,3), which are pressed against said slitting blade by means of clamping devices, such as outer metal plates (4,5) or the like, that said rings or discs of a rubber or a plastic material rough- ly have the same outer diameter as the slitting blade, which means that they roughly cover the edge, and that said rings or discs at least not in their peripherical parts adhere to said slitting blade but rather are designed in such a way that they, when a slitting is done, can be forced out of the area of the edge and set it free.
2. A circular slitting knife according to claim 1, c h a r a c t e r i z e d in that said rings (2,3) have two plain surfaces, which are perpendicular to the rota- tional symmetry axis of said rings, as well as at least one cylindrical surface.
3. A circular slitting knife according to claim 2, c h a r a c t e r i z e d in that said two plain sur- faces, which are perpendicular to said rotational symmet¬ ry axis of said rings (2,3), have different sizes.
4. A circular slitting knife according to claim 3, c h a r a c t e r i z e d in that said rings (2,3) have a conical envelope surface.
5. A circular slitting knife according to claim 4, c h a r a c t e r i z e d in that the largest diameter of said rings (2,3) corresponds to the diameter of said slitting knife (1) or is up to 0.1 mm larger than the same.
6. A circular slitting knife according to claim 5, c h a r a c t e r i z e d in that said elastic rings (2,3) are mounted on either side of said slitting blade (1) in such a way, that their largest plain surfaces are pressed against said slitting blade (1) .
7. A circular slitting knife according to claim 6, c h a r a c t e r i z e d in that said elastic rings (2,3) are mounted on either side of said slitting blade (1) in such a way, that their smallest plain surfaces are pressed against said slitting blade (1) .
8. A circular slitting knife according to any of the pre- ceding claims, c h a r a c t e r i z e d in that the clamp force, which is exerted by means of the clamping devices (4,5), is generated by at least one screw faste¬ ning (6,4), the axis of which coincides with the rotatio¬ nal axis of said circular slitting knife.
9. A circular slitting knife according to any of the pre¬ ceding claims, c h a r a c t e r i z e d in that said slitting blade or at least its edge is made of a hard metal.
10. A circular slitting knife according to any of-the pre¬ ceding claims, c h a r a c t e r i z e d in that said slitting blade (1) has a thickness, which is not larger than 1 % of the diameter of the blade and preferably is within the interval 4-8 °/oo of the diameter of the blade.
PCT/SE1988/000594 1987-11-23 1988-11-04 Circular slitting knife WO1989004746A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8704617-3 1987-11-23
SE8704617A SE461636B (en) 1987-11-23 1987-11-23 SKAERTRISSA

Publications (1)

Publication Number Publication Date
WO1989004746A1 true WO1989004746A1 (en) 1989-06-01

Family

ID=20370338

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1988/000594 WO1989004746A1 (en) 1987-11-23 1988-11-04 Circular slitting knife

Country Status (3)

Country Link
AU (1) AU2724988A (en)
SE (1) SE461636B (en)
WO (1) WO1989004746A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0607027A2 (en) * 1993-01-13 1994-07-20 Esselte Dymo N.V. Tape cutting apparatus
US6308601B1 (en) 1998-11-19 2001-10-30 Eastman Kodak Company Apparatus and method for slitting a sheet of web material
WO2002066212A1 (en) * 2001-02-21 2002-08-29 Koenig & Bauer Aktiengesellschaft Cleaning device for a longitudinal cutting device and method for cleaning said cutting device
US6536320B2 (en) 1998-11-19 2003-03-25 Eastman Kodak Company Slitter cutting element and method of making same
WO2009039627A1 (en) * 2007-09-24 2009-04-02 Prittie Family Trust 89 Web inspection and repair machine with rotary razor slitting

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1794398A (en) * 1929-05-20 1931-03-03 Cameron Machine Co Slitting device
US1968242A (en) * 1927-06-09 1934-07-31 Cameron Machine Co Slitting means
US2862231A (en) * 1955-03-10 1958-12-02 Lonza Werke Elektrochemisch Fa Method and apparatus for dividing thermoplastic bodies
US3293962A (en) * 1965-01-07 1966-12-27 Olin Mathieson Corrugated board cutter device and process
US3358370A (en) * 1966-08-01 1967-12-19 Richard W Logan Composite blade structure
SE394091B (en) * 1975-10-16 1977-06-06 Ekdahlverken Ab CUTTERS.
DE3446161A1 (en) * 1984-06-26 1986-01-02 Kai Cutlery Center Co.,Ltd., Seki, Gifu CUTTING DEVICE WITH A CIRCULAR ROTATING KNIFE

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1968242A (en) * 1927-06-09 1934-07-31 Cameron Machine Co Slitting means
US1794398A (en) * 1929-05-20 1931-03-03 Cameron Machine Co Slitting device
US2862231A (en) * 1955-03-10 1958-12-02 Lonza Werke Elektrochemisch Fa Method and apparatus for dividing thermoplastic bodies
US3293962A (en) * 1965-01-07 1966-12-27 Olin Mathieson Corrugated board cutter device and process
US3358370A (en) * 1966-08-01 1967-12-19 Richard W Logan Composite blade structure
SE394091B (en) * 1975-10-16 1977-06-06 Ekdahlverken Ab CUTTERS.
DE3446161A1 (en) * 1984-06-26 1986-01-02 Kai Cutlery Center Co.,Ltd., Seki, Gifu CUTTING DEVICE WITH A CIRCULAR ROTATING KNIFE

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0607027A2 (en) * 1993-01-13 1994-07-20 Esselte Dymo N.V. Tape cutting apparatus
EP0607027A3 (en) * 1993-01-13 1994-12-14 Esselte Dymo Nv Tape cutting apparatus.
US5695705A (en) * 1993-01-13 1997-12-09 Esselte N.V. Method for making tape cutting apparatus
US6279446B1 (en) 1993-01-13 2001-08-28 Esselte N.V. Tape cutting apparatus
US6308601B1 (en) 1998-11-19 2001-10-30 Eastman Kodak Company Apparatus and method for slitting a sheet of web material
US6536320B2 (en) 1998-11-19 2003-03-25 Eastman Kodak Company Slitter cutting element and method of making same
WO2002066212A1 (en) * 2001-02-21 2002-08-29 Koenig & Bauer Aktiengesellschaft Cleaning device for a longitudinal cutting device and method for cleaning said cutting device
US7147724B2 (en) 2001-02-21 2006-12-12 Koenig & Bauer Aktiengesellschaft Cleaning device for a longitudinal cutting device and method for cleaning the device
WO2009039627A1 (en) * 2007-09-24 2009-04-02 Prittie Family Trust 89 Web inspection and repair machine with rotary razor slitting

Also Published As

Publication number Publication date
SE8704617L (en) 1989-05-24
SE461636B (en) 1990-03-12
AU2724988A (en) 1989-06-14
SE8704617D0 (en) 1987-11-23

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