WO1997034768A1 - Printing tampon - Google Patents

Printing tampon Download PDF

Info

Publication number
WO1997034768A1
WO1997034768A1 PCT/CH1997/000096 CH9700096W WO9734768A1 WO 1997034768 A1 WO1997034768 A1 WO 1997034768A1 CH 9700096 W CH9700096 W CH 9700096W WO 9734768 A1 WO9734768 A1 WO 9734768A1
Authority
WO
WIPO (PCT)
Prior art keywords
printing
tampon
coating
pressure body
softer
Prior art date
Application number
PCT/CH1997/000096
Other languages
German (de)
French (fr)
Inventor
Rudolf Bührer
Original Assignee
Microprint Lc Gmbh
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 Microprint Lc Gmbh filed Critical Microprint Lc Gmbh
Priority to AU18657/97A priority Critical patent/AU1865797A/en
Publication of WO1997034768A1 publication Critical patent/WO1997034768A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/001—Pad printing apparatus or machines

Definitions

  • the invention relates to a tampon with a pressure body made of elastic material for the direct printing of objects in a tampon printing machine.
  • a method suitable for producing the tampon is also within the scope of the invention.
  • Pad printing is an indirect gravure printing process in which indentations in a clichee are filled with ink.
  • a smooth, elastic stamp, the so-called tampon picks up part of the color by pressing it on and transfers it to the object.
  • tampon printing has a significant advantage that the elasticity of the tampon adapts to the object to be printed due to its elasticity. This makes it possible to print on uneven surfaces.
  • Pressure pads made of silicone rubber are known from SWISS PLASTICS 6 (1984), No. 7-8, pages 23-30. With these prior art tampons, however, prints with fine details cannot be realized in sufficient quality in many cases. There is some improvement through the use of harder tampons. The required higher pressure of the tampon on the object to be printed cannot, however, be increased arbitrarily, so that there are limits, particularly for sensitive objects, to harder tampons. Some improvement in print quality can also be achieved by reducing the tampon stroke speed, which, however, results in reduced printing performance.
  • the inventor has set himself the task of creating a tampon of the type mentioned at the outset which, given the hardness of the printing body, enables high printing quality in a wide contact pressure range.
  • the surface area of the printing body intended for the transfer of printing ink is provided with a coating of a material which is softer than the core material of the printing body.
  • the coating of the pressure body with a softer material in accordance with the invention enables fine printing patterns of high quality to be produced, which cannot be achieved with conventional tampons, even by precisely adjusting the hardness of the pressure body.
  • the essence of the present invention lies in the combination of a relatively hard printing body with a soft support for transferring the printing ink, the thickness of the coating being surprisingly of subordinate importance. In certain cases, a coating thickness in the nanometer range is sufficient. The only thing that is decisive is that the harder base of the pressure body during the printing process still absorbs the majority of the elastic deformation.
  • the minimum required thickness of the layer can be determined in simple experiments, the maximum thickness being approximately 5 mm, preferably approximately 2 mm.
  • the tampon coated according to the invention can be realized with various materials.
  • the pressure body and the coating can consist of completely different materials. However, if a silicone rubber which is customary today is used to manufacture the pressure body, a silicone rubber is also suitable as the softer coating material.
  • the mass for the printed matter is cast into a corresponding mold, from which the printed matter can be removed after it has hardened.
  • One method suitable for producing the tampon according to the invention is to coat the mold with the softer material provided for the coating in a first step and then to pour the material for the pressure body into the already coated mold in a second step.
  • a tampon 10 has a wooden or metal disc 12 and a pressure body 14 connected to it.
  • the pressure body 14 consisting of a first material is provided with a coating 16 made of a second material which is softer than the first material.
  • the tampon 10 is inserted by means of the disc 12 into a tampon printing machine not shown in the drawing.
  • a silicone rubber of ShorO 45 hardness can be used as the material for the pressure body 14 and a material of ShorO 20 hardness for the coating 16, the thickness of the coating 16 being e.g. 0.1 mm.

Landscapes

  • Absorbent Articles And Supports Therefor (AREA)

Abstract

The invention relates to a tampon (10) with a printing body (14) consisting of a resilient material for direct printing of articles in a tampon printing machine. The printing-body (14) surface region provided for transferring the printing ink is provided with a coating (16) consisting of a softer material than the core material of the printing body. Consequently, the printing quality is substantially improved.

Description

DrucktamponPrinting pad
Die Erfindung betrifft einen Tampon mit einem Druckkörper aus elastischem Werkstoff zum direkten Bedrucken von Gegen¬ ständen In einer Tampondruckmaschine. Im Rahmen der Erfin¬ dung liegt auch ein zur Herstellung des Tampons geeignetes Verfahren.The invention relates to a tampon with a pressure body made of elastic material for the direct printing of objects in a tampon printing machine. A method suitable for producing the tampon is also within the scope of the invention.
Der Tampondruck Ist ein indirektes Tiefdruckverfahren, bei dem Vertiefungen in einem Clichee mit Farbe gefüllt werden. Ein glatter, elastischer Stempel, der sogenannte Tampon, nimmt durchAufdrücken einenTeil derFarbe auf undüberträgt diese auf den Gegenstand. Der Tampondruck hat gegenüber an¬ derenDruckverfahrendenwesentlichenVorteil, dass sichder Tampon bei der Farbabgabe durch seine Elastizität dem zu be¬ druckenden Gegenstand anpasst. Dadurch ist es möglich, un¬ ebene Flächenzubedrucken.Pad printing is an indirect gravure printing process in which indentations in a clichee are filled with ink. A smooth, elastic stamp, the so-called tampon, picks up part of the color by pressing it on and transfers it to the object. Compared to other printing processes, tampon printing has a significant advantage that the elasticity of the tampon adapts to the object to be printed due to its elasticity. This makes it possible to print on uneven surfaces.
Aus SWISS PLASTICS 6 (1984), Nr. 7-8, Seite 23-30, sind Drucktampons aus Silikonkautschuk bekannt. Mit diesen vor¬ bekannten Tampons lassen sich jedoch Drucke mit feinen De¬ tails in vielen Fällen nicht in ausreichender Qualität realisieren. Eine gewisseVerbesserung ergibt sichdurch die Verwendung härterer Tampons. Der dadurch erforderliche höhere Anpressdurck des Tampons auf den zu bedruckenden Ge¬ genstand kann jedoch nicht beliebig erhöht werden, so dass insbesondere bei empfindlichen Gegenständen härteren Tam- pons Grenzen gesetzt sind. Eine gewisse Verbesserung der Druckqualität lässt sich auch mit einer Verringerung der Tamponhubgeschwindigkeit erreichen, was allerdings in einer vermindertenDruckleistung resultiert.Pressure pads made of silicone rubber are known from SWISS PLASTICS 6 (1984), No. 7-8, pages 23-30. With these prior art tampons, however, prints with fine details cannot be realized in sufficient quality in many cases. There is some improvement through the use of harder tampons. The required higher pressure of the tampon on the object to be printed cannot, however, be increased arbitrarily, so that there are limits, particularly for sensitive objects, to harder tampons. Some improvement in print quality can also be achieved by reducing the tampon stroke speed, which, however, results in reduced printing performance.
Die genannten Unzulänglichkeiten der vorbekannten Tampons führen dazu, dass heute zum Bedrucken unterschiedlicher Ge¬ genstände eine Vielzahl von Tampons in verschiedenen Härten bereitgestelltwerdenmüssen.The above-mentioned inadequacies of the previously known tampons mean that today a multitude of tampons of different hardnesses are used for printing different objects must be provided.
Angesichts dieser Gegebenheiten hat sich der Erfinder die Aufgabe gestellt, einen Tampon der eingangs erwähntenArt zu schaffen, der bei vorgegebener Härte des Druckkörpers eine hohe Druckqualität in einem weiten Anpressdruckbereich er¬ möglicht.In view of these circumstances, the inventor has set himself the task of creating a tampon of the type mentioned at the outset which, given the hardness of the printing body, enables high printing quality in a wide contact pressure range.
Zur erfindungsgemässen Lösung der Aufgabe führt, dass der zur Uebertragung von Druckfarbe vorgesehene Oberflächenbe¬ reich des Druckkörpers mit einer Beschichtung aus einem ge¬ genüber dem Kernwerkstoff des Druckkörpers weicheren Werk¬ stoffversehenist.In order to achieve the object according to the invention, the surface area of the printing body intended for the transfer of printing ink is provided with a coating of a material which is softer than the core material of the printing body.
Durch die erfindungsgemässe Beschichtung des Druckkörpers mit einem weicheren Material lassen sich feine Druckmuster von hoher Qualität erzeugen, wie sie mit herkömmlichen Tam¬ pons auch durch exakte Einstellung der Härte des Druckkör¬ pers nicht realisiert werden können. Diese Erkenntnis, wo- nach eine weiche Schicht an der Oberfläche des Druckkörpers zu einer wesentlichen Verbesserung der Druckqualität führt, ist deshalb überraschend, weil im Stand der Technik zur Ver¬ besserung der Druckqualität generell eine Erhöhung der Tam¬ ponhärtevorgeschlagenwird.The coating of the pressure body with a softer material in accordance with the invention enables fine printing patterns of high quality to be produced, which cannot be achieved with conventional tampons, even by precisely adjusting the hardness of the pressure body. This finding, according to which a soft layer on the surface of the printing body leads to a substantial improvement in the printing quality, is surprising because the prior art generally suggests increasing the tampon hardness to improve the printing quality.
Das Wesen der vorliegenden Erfindung liegt in der Kombina¬ tion eines verhältnismässig harten Druckkörpers mit einer weichen Auflage zur Uebertragung der Druckfarbe, wobei die Dicke der Beschichtung überraschenderweise von untergeord- neter Bedeutung ist. In gewissen Fällen ist eine Beschich- tungsdicke im Nanometerbereich bereits ausreichend. Ent¬ scheidend ist lediglich, dass die härtere Unterlage des Druckkörpers beimDruckvorgangnochdenHauptanteil der ela¬ stischen Verformung aufnimmt. Die minimal erforderliche Dicke der Schicht lässt sich in einfachen Versuche ermit¬ teln, wobei die maximale Dicke etwa 5 mm, vorzugsweise etwa 2 mm, beträgt. Dererfindungsgemäss beschichtete Tampon lässt sichmitver¬ schiedenenWerkstoffen realisieren. Sokönnenbeispielswei¬ se der Druckkörper und die Beschichtung aus völlig anders geartetenWerkstoffenbestehen. Wird jedoch zurHerstellung des Druckkörpers ein heute üblicher Silikonkautschuk ver¬ wendet, so bietet sich als weicherer Beschichtungswerkstoff ebenfallseinSilikonkautschukan.The essence of the present invention lies in the combination of a relatively hard printing body with a soft support for transferring the printing ink, the thickness of the coating being surprisingly of subordinate importance. In certain cases, a coating thickness in the nanometer range is sufficient. The only thing that is decisive is that the harder base of the pressure body during the printing process still absorbs the majority of the elastic deformation. The minimum required thickness of the layer can be determined in simple experiments, the maximum thickness being approximately 5 mm, preferably approximately 2 mm. The tampon coated according to the invention can be realized with various materials. For example, the pressure body and the coating can consist of completely different materials. However, if a silicone rubber which is customary today is used to manufacture the pressure body, a silicone rubber is also suitable as the softer coating material.
BeieinemherkömmlichenHerstellungsverfahren fürDrucktam¬ ponswirddieMassefürdenDruckkörperineineentsprechende Formgegossen, auswelchersichderDruckkörpernachdemAus¬ härten entnehmen lässt. Ein zur Herstellung des erfindungs¬ gemässen Tampons geeignetes Verfahren besteht darin, die Form in einem ersten Schritt mit dem für die Beschichtung vorgesehenen weicheren Werkstoff zu beschichten und an¬ schliessend in einem zweiten Schritt den Werkstoff für den DruckkörperindiebereitsbeschichteteFormzugiessen.In a conventional production process for printed amons, the mass for the printed matter is cast into a corresponding mold, from which the printed matter can be removed after it has hardened. One method suitable for producing the tampon according to the invention is to coat the mold with the softer material provided for the coating in a first step and then to pour the material for the pressure body into the already coated mold in a second step.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergebensichausdernachfolgendenBeschreibungeinesbevor¬ zugten Ausführungsbeispiels sowie anhand der Zeichnung; diese zeigt Schematisch in ihrer einzigen Figur einen Quer¬ schnittdurcheinenDrucktampon.Further advantages, features and details of the invention emerge from the following description of a preferred exemplary embodiment and with reference to the drawing; this shows schematically in its single figure a cross-section through a pressure pad.
Ein Tampon 10 weist eine Holz- oder Metallscheibe 12 sowie einenmit dieser verbundenen Druckkörper 14 auf. Der aus ei¬ nem ersten Werkstoff bestehende Druckkörper 14 ist mit einer Beschichtung 16 aus einem gegenüber dem ersten Werkstoff weicheren zweiten Werkstoff versehen. Der Tampon 10 wird mittels der Scheibe 12 in eine in der Zeichnung nicht darge¬ stellteTampondruckmaschineeingesetzt.A tampon 10 has a wooden or metal disc 12 and a pressure body 14 connected to it. The pressure body 14 consisting of a first material is provided with a coating 16 made of a second material which is softer than the first material. The tampon 10 is inserted by means of the disc 12 into a tampon printing machine not shown in the drawing.
Als Werkstoff für den Druckkörper 14 kannbeispielsweise ein Silikonkautschukder HärteShorO 45 und für die Beschichtung 16 ein Werkstoff der Härte ShorO 20 verwendet werden, wobei dieDicke aderBeschichtung 16 z.B.0,1 mmbeträgt. For example, a silicone rubber of ShorO 45 hardness can be used as the material for the pressure body 14 and a material of ShorO 20 hardness for the coating 16, the thickness of the coating 16 being e.g. 0.1 mm.

Claims

Patentansprüche claims
1. Tampon mit einemDruckkörper (14) aus elastischem Werk¬ stoff zum direkten Bedrucken von Gegenständen in einer Tampondruckmaschine,1. tampon with a pressure body (14) made of elastic material for direct printing of objects in a tampon printing machine,
dadurch gekennzeichnet, dasscharacterized in that
der zur Uebertragung von Druckfarbe vorgesehene Ober¬ flächenbereich des Druckkörpers (14) mit einer Be¬ schichtung (16) aus einem gegenüber dem Kernwerkstoff des DruckkörpersweicherenWerkstoffversehen ist.the surface area of the printing body (14) provided for the transfer of printing ink is provided with a coating (16) made of a material that is softer than the core material of the printing body.
2. Tampon nach Anspruch 1, dadurch gekennzeichnet, dass die Beschichtung (16) eine Dicke (a) von max.5 mm, vor¬ zugsweisemax.2mm, aufweist.2. Tampon according to claim 1, characterized in that the coating (16) has a thickness (a) of max. 5 mm, preferably max. 2 mm.
3. Tampon nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Beschichtung (16) aus Silikonkautschuk be¬ steht.3. Tampon according to claim 1 or 2, characterized in that the coating (16) consists of silicone rubber be¬.
4. Verfahren zur Herstellung eines Tampons nach einem der Ansprüche 1 bis 3 durchGiessendes Druckkörpers (14) in einer Form, dadurch gekennzeichnet, dass die Form in einem ersten Schritt mit dem weicheren Werkstoff für die Beschichtung (16) beschichtet und in einem zweiten Schritt der Werkstoff für den Druckkörper (14) in die beschichtete Form gegossenwird. 4. A method for producing a tampon according to one of claims 1 to 3 by casting the pressure body (14) in a mold, characterized in that the mold is coated in a first step with the softer material for the coating (16) and in a second step the Material for the pressure body (14) is poured into the coated mold.
PCT/CH1997/000096 1996-03-18 1997-03-11 Printing tampon WO1997034768A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18657/97A AU1865797A (en) 1996-03-18 1997-03-11 Printing tampon

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH70596 1996-03-18
CH705/96 1996-03-18

Publications (1)

Publication Number Publication Date
WO1997034768A1 true WO1997034768A1 (en) 1997-09-25

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Application Number Title Priority Date Filing Date
PCT/CH1997/000096 WO1997034768A1 (en) 1996-03-18 1997-03-11 Printing tampon

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WO (1) WO1997034768A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002045961A1 (en) * 2000-12-07 2002-06-13 Kaare Johansson Improvements in or relating to a tampon
US6958189B2 (en) 2003-03-31 2005-10-25 Exatec, Llc Ink for a polycarbonate substrate
DE102007019398A1 (en) * 2007-04-23 2008-11-06 Itw Morlock Gmbh Pad printing machine and tampon for it
WO2010034218A1 (en) * 2008-09-26 2010-04-01 Tian Wenxin A reusable printing pad
US7732041B2 (en) 2004-08-02 2010-06-08 Exatec Llc Decorative ink for automotive plastic glazing
US20120222573A1 (en) * 2011-03-04 2012-09-06 Fih (Hong Kong) Limited Pad structure for pad printing machine
CN107848291A (en) * 2016-05-17 2018-03-27 株式会社秀峰 Printing rubber blanket

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748696A (en) * 1951-06-13 1956-06-05 Murray Lilian Printing or decoration of ceramic or other ware
GB1097507A (en) * 1965-05-18 1968-01-03 Rorstrands Porslinsfabriker Ab Improvements in machine and method for the decoration of ceramic or glass articles
US3701317A (en) * 1967-09-19 1972-10-31 Hiroshi Miyamoto Method for printing electrical circuits on substrates
FR2686547A3 (en) * 1992-01-24 1993-07-30 Paul Portelli Printing stamp for marking articles by inking, especially in relief, and method for its production

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2748696A (en) * 1951-06-13 1956-06-05 Murray Lilian Printing or decoration of ceramic or other ware
GB1097507A (en) * 1965-05-18 1968-01-03 Rorstrands Porslinsfabriker Ab Improvements in machine and method for the decoration of ceramic or glass articles
US3701317A (en) * 1967-09-19 1972-10-31 Hiroshi Miyamoto Method for printing electrical circuits on substrates
FR2686547A3 (en) * 1992-01-24 1993-07-30 Paul Portelli Printing stamp for marking articles by inking, especially in relief, and method for its production

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002045961A1 (en) * 2000-12-07 2002-06-13 Kaare Johansson Improvements in or relating to a tampon
US6958189B2 (en) 2003-03-31 2005-10-25 Exatec, Llc Ink for a polycarbonate substrate
US7732041B2 (en) 2004-08-02 2010-06-08 Exatec Llc Decorative ink for automotive plastic glazing
DE102007019398A1 (en) * 2007-04-23 2008-11-06 Itw Morlock Gmbh Pad printing machine and tampon for it
WO2010034218A1 (en) * 2008-09-26 2010-04-01 Tian Wenxin A reusable printing pad
US20120222573A1 (en) * 2011-03-04 2012-09-06 Fih (Hong Kong) Limited Pad structure for pad printing machine
CN107848291A (en) * 2016-05-17 2018-03-27 株式会社秀峰 Printing rubber blanket
EP3459739A4 (en) * 2016-05-17 2020-01-01 Shuhou Co., Ltd. Printing blanket
CN107848291B (en) * 2016-05-17 2020-08-28 株式会社秀峰 Printing blanket
US10800197B2 (en) 2016-05-17 2020-10-13 Shuhou Co., Ltd. Printing blanket

Also Published As

Publication number Publication date
AU1865797A (en) 1997-10-10

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