EP0319510A2 - Method for the manufacture of press knives for sheet material resembling cardboard - Google Patents

Method for the manufacture of press knives for sheet material resembling cardboard Download PDF

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Publication number
EP0319510A2
EP0319510A2 EP88890291A EP88890291A EP0319510A2 EP 0319510 A2 EP0319510 A2 EP 0319510A2 EP 88890291 A EP88890291 A EP 88890291A EP 88890291 A EP88890291 A EP 88890291A EP 0319510 A2 EP0319510 A2 EP 0319510A2
Authority
EP
European Patent Office
Prior art keywords
cutting
cardboard
sheet material
manufacture
coating
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
Application number
EP88890291A
Other languages
German (de)
French (fr)
Other versions
EP0319510B1 (en
EP0319510A3 (en
Inventor
Oswald Kern
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boehler Ybbstalwerke GmbH
Original Assignee
Boehler GmbH
Boehler Ybbstalwerke GmbH
Boehler GmbH Germany
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 Boehler GmbH, Boehler Ybbstalwerke GmbH, Boehler GmbH Germany filed Critical Boehler GmbH
Publication of EP0319510A2 publication Critical patent/EP0319510A2/en
Publication of EP0319510A3 publication Critical patent/EP0319510A3/en
Application granted granted Critical
Publication of EP0319510B1 publication Critical patent/EP0319510B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4436—Materials or surface treatments therefore

Definitions

  • the invention relates to a method for producing line cutting knives for cardboard-like sheet material, in particular for food packaging or the like, consisting of a band-shaped carrier part with a mechanically created cutting surface and a coating applied thereon to avoid the occurrence of dust and adhesion of adhesives.
  • This manufacturing process of cutting knives is used for tools that are used in the manufacture of folding box developments, especially for food packaging.
  • the object of the invention was to achieve an improvement in the service life and, moreover, to use recycling material which, due to its nature, tends to separate paper dust or contaminates the cutting edge with adhesives.
  • the aim is achieved by applying molybdenum bisulfide to the cutting area at room temperature and then baking in the range from 120 ° to 150 ° C. for 20 to 40 minutes, preferably 30 minutes. This ensures that there is a low coefficient of friction and that there is no dust. Due to the low adhesion for adhesives, the knife has a long service life.
  • the coating thickness is 1 to 5 ⁇ m, preferably 3 ⁇ m, because there are particularly good sliding properties.
  • Fig. 1 shows in oblique view part of a cutting knife 1, which is made of a flat steel 2.
  • a cutting edge 3 is created in the middle of the flat steel 2 by mechanical processing.
  • the coating 4 is carried out on the remaining side faces away from the cutting edge 3.
  • Molybdenum bisulfide which is applied by spraying at room temperature, is suitable for this.
  • the coating 4 is applied by baking at a temperature of 120 ° to 150 ° C. and with a baking time of 20 to 40 minutes, preferably 30 minutes.
  • the flat steel 2 is not coated on its lateral surfaces.
  • Fig. 2 summarized the individual cutting knife 1 to a package 5, the remaining cutting edges 3 and the adjoining roof-shaped surfaces experience a coating 4 through a wide spray nozzle 6.
  • the spray mist 8 is applied evenly on both sides of the cutting edges 3 when, according to arrow 8, a uniform feed is set up.
  • the coating is uniform.
  • the coating achieves a smooth surface, which results in a longer service life because the amount of dust is very low and it is particularly important to mention the fact that adhesive adhesives on the raw material do not stick to the cutting edge. As tests have shown, an exact cutting edge of the cardboard is also guaranteed over long processing times.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Knives (AREA)
  • Nonmetal Cutting Devices (AREA)

Abstract

A method for the manufacture of press knives for sheet material resembling cardboard, in particular for foodstuffs packaging or the like, consisting of a strip-shaped supporting part with a mechanically produced cutting surface and a coating applied thereto in order to prevent accumulation of cutting dust and adhesion of foodstuffs. In this case, the aim is to improve the service life and furthermore also to use recycling material. This is achieved by applying molybdenum bisulphide at room temperature to the cutting region and subsequently burning it in within the range from 120 DEG to 150 DEG C for 20 to 40, preferably 30, minutes.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Linien-Schneidmessern für kartonartiges Flächenmaterial, insbesondere für Lebensmittelverpackungen od. dgl., be­stehend aus einem bandförmigen Trägerteil mit einer me­chanisch erstellten Schneidfläche und einer daran aufge­brachten Beschichtung zur Vermeidung von Schnittstauban­fall und Haftung von Klebemitteln.The invention relates to a method for producing line cutting knives for cardboard-like sheet material, in particular for food packaging or the like, consisting of a band-shaped carrier part with a mechanically created cutting surface and a coating applied thereon to avoid the occurrence of dust and adhesion of adhesives.

Dieses Herstellverfahren von Schneidmessern dient für Werkzeuge, die bei der Herstellung von Faltschachtelab­wicklungen, insbesondere für Lebensmittelverpackungen, Anwendung finden.This manufacturing process of cutting knives is used for tools that are used in the manufacture of folding box developments, especially for food packaging.

Es ist bekannt, Schneidmesser zu erstellen, die biegbar sind und eine ausreichende Härte der Schneide aufweisen, um eine vertretbare Standzeit solcher Werkzeuge zu er­reichen. Dazu werden Materialien, insbesondere ein Stahl verwendet, der eine durchgehende Härte aufweist und somit den Anforderungen Rechnung trägt. Auch ist bekannt, nur die Schneide allein durch Hochfrequenzhärtung zu verbes­sern, um somit eine Erhöhung der Standzeit zu erreichen. Die Standzeit des Messers hängt sehr von der Stahlquali­tät der Schneidauflage, der Härte der Messerschneide, dem Messer- bzw. Fasenwinkel, der Qualität des Nachschliffs sowie der Qualität des Abziehens und nicht zuletzt von der Beschaffenheit des Schneidgutes ab.It is known to produce cutting knives which are bendable and have a sufficient hardness of the cutting edge in order to achieve an acceptable service life for such tools. For this purpose, materials, in particular steel, are used which have a constant hardness and thus take account of the requirements. It is also known that only the cutting edge can be improved solely by high-frequency hardening in order to increase the service life. The service life of the knife depends very much on the steel quality of the cutting surface, the hardness of the knife edge, the knife or chamfer angle, the quality of the regrinding and the quality of the honing, and not least of all on the quality of the material to be cut.

Diese Probleme und deren Lösungen sind bekannt und bei­spielsweise aus Papier + Kunststoff-Verarbeiter 1 - 82, Seiten 17, 18 und 20 "Das Messer im Schnellschneider" zu entnehmen.These problems and their solutions are known and, for example, from Paper + Plastic Processors 1 - 82, pages 17, 18 and 20 "The knife in the high-speed cutter" remove.

Es hat sich aber gezeigt, daß die herkömmlichen Methoden, die Standzeit zu erhöhen, nicht ausreichen. Da im erhöh­tem Maß die Wiederverwendung von Altpapier und damit ver­stärkt staubbildende Elemente beim Schnittvorgang die Messer rasch verunreinigen, ist z.B. in der Verpackungs­industrie für Lebensmittel ein solches Recyclingmaterial mitunter ungeeignet. Besonders tritt das Problem auf, wenn Etiketten oder ähnliche Aufkleber geschnitten wer­den, dann haftet auch der Klebstoff an der Schneide und verringert somit arg die Standzeit des Messers. Es wäre denkbar, mit Hilfe von Lösungsmitteln für eine rasche Reinigung zu sorgen, aber damit wird das Werkstück durch Giftstoffe unbrauchbar.However, it has been shown that the conventional methods of increasing the service life are not sufficient. Since the reuse of waste paper and thus increasingly dust-forming elements during the cutting process is increasingly contaminating the knives, e.g. Such a recycling material is sometimes unsuitable in the packaging industry for food. The problem occurs in particular when labels or similar stickers are cut, then the adhesive also adheres to the cutting edge and thus considerably reduces the service life of the knife. It would be conceivable to use cleaning agents to ensure quick cleaning, but this makes the workpiece unusable due to toxins.

Ausgehend von diesem Stand der Technik lag der Erfindung die Aufgabe zugrunde, eine Verbesserung der Standzeit zu erzielen und darüberhinaus auch Recyclingmaterial zu ver­wenden, das aufgrund seiner Beschaffenheit zur Absonde­rung von Papierstaub neigt bzw. die Schneide durch Kleb­stoffe verunreinigt. Erfindungsgemäß wird das Ziel da­durch erreicht, daß auf den Schneidenbereich bei Raum­temperatur Molybdän-Bisulfid aufgetragen und hernach im Bereich von 120° bis 150°C 20 bis 40 Minuten, vorzugs­weise 30 Minuten, eingebrannt wird. Damit wird erreicht, daß ein niedriger Reibungskoeffizient gegeben ist und damit kein Staubanfall entsteht. Durch die geringe Haftfähigkeit für Klebstoffe stellt sich eine hohe Standzeit des Messers ein.Based on this prior art, the object of the invention was to achieve an improvement in the service life and, moreover, to use recycling material which, due to its nature, tends to separate paper dust or contaminates the cutting edge with adhesives. According to the invention, the aim is achieved by applying molybdenum bisulfide to the cutting area at room temperature and then baking in the range from 120 ° to 150 ° C. for 20 to 40 minutes, preferably 30 minutes. This ensures that there is a low coefficient of friction and that there is no dust. Due to the low adhesion for adhesives, the knife has a long service life.

Als besonders vorteilhaft hat sich erwiesen, wenn die Be­schichtungsstärke 1 bis 5 µm, vorzugsweise 3 µm beträgt, da sich besonders gute Gleiteigenschaften ergeben.It has proven to be particularly advantageous if the coating thickness is 1 to 5 μm, preferably 3 μm, because there are particularly good sliding properties.

Eine rationelle Fertigung ist dann gegeben, wenn gleich mehrere bandförmige Trägerteile zu einem Paket zusammen­gefaßt und die frei verbleibenden Schneidflächen gemein­sam beschichtet bzw. aufgespritzt werden.A rational production is given when several band-shaped carrier parts are combined into a package and the remaining cutting surfaces are coated or sprayed on together.

Als vorteilhaft hat sich erwiesen, wenn als Beschich­tungsmaterial Molybdänpulver mit Lösungsmittel verwendet wird, da eine gleichmäßige Verteilung auf der Schneid­fläche erzielbar ist.It has proven to be advantageous if molybdenum powder with solvent is used as the coating material, since a uniform distribution on the cutting surface can be achieved.

Anhand eines Ausführungsbeispieles sei die Erfindung näher erläutert. Es zeigen:

  • Fig. 1 Schrägriß eines Messerteiles
  • Fig. 2 Messerpaket für den Beschichtungsvorgang.
The invention will be explained in more detail using an exemplary embodiment. Show it:
  • Fig. 1 oblique view of a knife part
  • Fig. 2 knife package for the coating process.

Die Fig. 1 zeigt im Schrägriß einen Teil eines Schneid­messers 1, das aus einem Flachstahl 2 gefertigt ist. An der Oberseite ist beispielsweise eine Schneidkante 3 in der Mitte des Flachstahls 2 durch mechanische Bearbeitung erstellt. Die Beschichtung 4 wird auf die verbleibenden Seitenflächen von der Schneide 3 weg durchgeführt. Hier­zu eignet sich Molybdän-Bisulfid das bei Raumtemperatur durch Spritzen aufgetragen wird. Durch Einbrennen bei ei­ner Temperatur von 120° bis 150°C und bei einer Einbrenn­dauer von 20 bis 40 Minuten, vorzugsweise 30 Minuten, wird die Beschichtung 4 aufgetragen. Der Flachstahl 2 wird an seinen seitlichen Flächen nicht beschichtet.Fig. 1 shows in oblique view part of a cutting knife 1, which is made of a flat steel 2. At the top, for example, a cutting edge 3 is created in the middle of the flat steel 2 by mechanical processing. The coating 4 is carried out on the remaining side faces away from the cutting edge 3. Molybdenum bisulfide, which is applied by spraying at room temperature, is suitable for this. The coating 4 is applied by baking at a temperature of 120 ° to 150 ° C. and with a baking time of 20 to 40 minutes, preferably 30 minutes. The flat steel 2 is not coated on its lateral surfaces.

Um eine rationelle Fertigung bzw. eine Vereinfachung des Auftrages der Beschichtung durchzuführen, werden nach Fig. 2 die einzelnen Schneidmesser 1 zu einem Paket 5 zusammengefaßt, wobei die verbleibenden Schneidkanten 3 und die daran anschließenden, dachförmigen Flächen eine Beschichtung 4 durch eine breite Sprühdüse 6 erfahren. Der Sprühnebel 8 legt sich beidseitig der Schneidkanten 3 dann gleichmäßig an, wenn gemäß Pfeil 8 ein gleichmäßiger Vorschub eingerichtet ist.In order to carry out an efficient production or to simplify the application of the coating, according to Fig. 2 summarized the individual cutting knife 1 to a package 5, the remaining cutting edges 3 and the adjoining roof-shaped surfaces experience a coating 4 through a wide spray nozzle 6. The spray mist 8 is applied evenly on both sides of the cutting edges 3 when, according to arrow 8, a uniform feed is set up.

Wesentlich ist, daß eine gleichmäßige Beschichtung er­folgt. Durch die Beschichtung wird eine glatte Oberfläche erzielt, woraus eine höhere Standzeit resultiert, weil der Staubanfall sehr gering ist und als besonders wichtig ist die Tatsache zu erwähnen, daß anhaftende Klebstoffe am Rohmaterial nicht an der Schneide haften bleiben. Wie Versuche ergeben haben, wird auch eine exakte Schneid­kante des Kartons über lange Bearbeitungszeiten garan­tiert.It is essential that the coating is uniform. The coating achieves a smooth surface, which results in a longer service life because the amount of dust is very low and it is particularly important to mention the fact that adhesive adhesives on the raw material do not stick to the cutting edge. As tests have shown, an exact cutting edge of the cardboard is also guaranteed over long processing times.

Claims (4)

1. Verfahren zur Herstellung von Linien-Schneidmessern für kartonartiges Flächenmaterial, insbesondere für Lebensmittelverpackungen od. dgl., bestehend aus einem bandförmigen Trägerteil mit einer mechanisch erstellten Schneidfläche und einer daran aufgebrachten Beschichtung zur Vermeidung von Schnittstaubanfall und Haftung von Klebemitteln, dadurch gekennzeichnet, daß auf den Schneidenbereich bei Raumtemperatur Molybdän-Bisulfid aufgetragen und im Bereich von 120° bis 150°C 20 bis 40 Minuten, vorzugsweise 30 Minuten, eingebrannt wird.1. A process for the production of line cutting knives for cardboard-like sheet material, in particular for food packaging or the like, consisting of a band-shaped carrier part with a mechanically created cutting surface and a coating applied thereon to avoid the occurrence of dust and adhesion of adhesives, characterized in that Molybdenum bisulfide is applied to the cutting area at room temperature and baked in the range from 120 ° to 150 ° C. for 20 to 40 minutes, preferably 30 minutes. 2. Verfahren zur Herstellung von Linien-Schneidmessern nach Anspruch 1, dadurch gekennzeichnet, daß die Be­schichtungsstärke 1 bis 5 µm, vorzugsweise 3 µm, beträgt.2. A method for producing line cutting knives according to claim 1, characterized in that the coating thickness is 1 to 5 microns, preferably 3 microns. 3. Verfahren zur Herstellung von Linien-Schneidmessern nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die bandförmigen Trägerteile zu einem Paket (5) zusammen­gefaßt und die frei verbleibenden Schneidflächen gemein­sam beschichtet bzw. aufgespritzt werden.3. A method for producing line-cutting knives according to claim 1 and 2, characterized in that the band-shaped carrier parts are combined to form a package (5) and the remaining cutting surfaces are coated or sprayed together. 4. Verfahren zur Herstellung von Linien-Schneidmessern nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß als Beschichtungsmaterial Molybdänpulver mit Lösungsmit­tel verwendet wird.4. A process for the production of line cutting knives according to claim 1 to 3, characterized in that molybdenum powder with solvent is used as the coating material.
EP19880890291 1987-11-30 1988-11-22 Method for the manufacture of press knives for sheet material resembling cardboard Expired - Lifetime EP0319510B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3132/87 1987-11-30
AT313287A AT393643B (en) 1987-11-30 1987-11-30 METHOD FOR PRODUCING LINE CUTTING KNIVES FOR CARDBOARD-LIKE SURFACE MATERIAL

Publications (3)

Publication Number Publication Date
EP0319510A2 true EP0319510A2 (en) 1989-06-07
EP0319510A3 EP0319510A3 (en) 1990-12-19
EP0319510B1 EP0319510B1 (en) 1994-03-09

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ID=3545799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880890291 Expired - Lifetime EP0319510B1 (en) 1987-11-30 1988-11-22 Method for the manufacture of press knives for sheet material resembling cardboard

Country Status (4)

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EP (1) EP0319510B1 (en)
JP (1) JPH01232988A (en)
AT (1) AT393643B (en)
DE (1) DE3888311D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101642915B (en) * 2009-07-07 2012-07-04 苏州安洁科技股份有限公司 Arrayed-blade punching device of rectangular non-metal material and method thereof
CN103433972A (en) * 2013-08-19 2013-12-11 沈阳理工大学 Adhesive sticker plane die cutting method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050242A (en) * 1900-01-01
FR1349075A (en) * 1963-03-06 1964-01-10 Process for producing safety razor blades as well as blades conforming to those obtained by the present process or similar process
GB1135839A (en) * 1965-04-22 1968-12-04 Philip Morris Inc Method for coating cutting edges of sharpened instruments

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050243A (en) *
AU485283B2 (en) * 1971-05-18 1974-10-03 Warner-Lambert Company Method of making a razorblade

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050242A (en) * 1900-01-01
FR1349075A (en) * 1963-03-06 1964-01-10 Process for producing safety razor blades as well as blades conforming to those obtained by the present process or similar process
GB1135839A (en) * 1965-04-22 1968-12-04 Philip Morris Inc Method for coating cutting edges of sharpened instruments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101642915B (en) * 2009-07-07 2012-07-04 苏州安洁科技股份有限公司 Arrayed-blade punching device of rectangular non-metal material and method thereof
CN103433972A (en) * 2013-08-19 2013-12-11 沈阳理工大学 Adhesive sticker plane die cutting method

Also Published As

Publication number Publication date
ATA313287A (en) 1991-05-15
DE3888311D1 (en) 1994-04-14
AT393643B (en) 1991-11-25
EP0319510B1 (en) 1994-03-09
EP0319510A3 (en) 1990-12-19
JPH01232988A (en) 1989-09-18

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