EP0146199A1 - Méthode et machine pour l'application de décalcomanies - Google Patents

Méthode et machine pour l'application de décalcomanies Download PDF

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Publication number
EP0146199A1
EP0146199A1 EP84303886A EP84303886A EP0146199A1 EP 0146199 A1 EP0146199 A1 EP 0146199A1 EP 84303886 A EP84303886 A EP 84303886A EP 84303886 A EP84303886 A EP 84303886A EP 0146199 A1 EP0146199 A1 EP 0146199A1
Authority
EP
European Patent Office
Prior art keywords
article
sheet
pad
strip
application
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.)
Withdrawn
Application number
EP84303886A
Other languages
German (de)
English (en)
Inventor
Wilfred Roberts
Kenneth Marshall
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.)
British Ceramic Research Association Ltd
Original Assignee
British Ceramic Research Association Ltd
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 British Ceramic Research Association Ltd filed Critical British Ceramic Research Association Ltd
Publication of EP0146199A1 publication Critical patent/EP0146199A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/26—Devices for applying labels
    • B65C9/36—Wipers; Pressers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
    • B65C9/00—Details of labelling machines or apparatus
    • B65C9/20—Gluing the labels or articles
    • B65C9/24—Gluing the labels or articles by heat

Definitions

  • This invention relates to decalcomanias, commonly called 'decals', and in particular to a method of applying decals to articles such as articles of ceramic ware, to a novel decal for use in the method, and to an apparatus for applying such decals.
  • Waterslide transfers or decals are used for the decoration of ceramics, glass and vitreous enamal products.
  • a major part of tableware on-glaze decoration for example is effected by such means.
  • These transfers are conventionally produced by printing the decoration motif in ceramic colours onto the surface of a paper coated with a water soluble gum.
  • Silk-screening or lithography are the methods used for printing.
  • the motif after printing is overprinted with a coat of a clear plastics lacquer.
  • the printed sheet is soaked in water which releases both the motif and plastics coating as the gum dissolves.
  • the plastics coating retains the motif and now acts as its support during application to the ware.
  • the transfer is placed on the ware and squeegeed into the correct position.
  • the gum retained on the back of the plastics film acts both as a lubricant, when wet, to allow the transfer to be moved easily to the correct position, and as an adhesive once the correct position for the transfer is located.
  • the plastics coating is sufficiently pliable at ambient temperatures to allow the motif to be moulded to complex shapes.
  • Decoration of ceramic bisque or clay ware can also be performed by means of transfers but in this case the gum layer on the back of the plastics carrier is insufficient to act either as a lubricant or an adhesive due to the very porous nature of the substrate.
  • Various patents have described means of overcoming this problem typical of which is British Patent Specification No. 1 338 323.
  • Lubrication and adhesion are achieved according to this specification by first applying to the very porous substrate a thin liquid coating of a film forming adhesive medium.
  • a film forming adhesive medium can be for example a carboset resin in butyl oxitol, thickened to prevent rapid penetration of the substrate pores by means of a water solution of a cellulose derivative.
  • the transfer is applied over the wet adhesive medium which stays liquid long enough to allow the transfer to be slid easily into the correct position.
  • the transfer is next squeegeed down removing excess medium.
  • the medium then acts as a solvent adhesive on the plastics carrier of the transfer anchoring it firmly to the ware where positioned.
  • the present invention has resulted from attempts to devise a system for automatically applying decals to complex shapes and which avoids the disadvantages of the previous methods described.
  • a method of applying a colour design to an article comprises applying the colour design to a portion of a sheet of thermo-plastics material, and urging said sheet portion into engagement with the surface of the article, the temperature of the sheet portion when engaged with the article being so arranged as to render said sheet portion plastically deformable.
  • the article is heated to render the sheet portion plastically deformable on engagement therewith.
  • the use of a heated article also induces tack in the sheet portion.
  • the sheet portion is preferably urged into engagement with the article by a resiliently deformable pad.
  • the pad is preferably of substantially dome shape, so that a central part of said sheet portion initially contacts the article, but on further movement of the pad towards the article a progressively increasing area of the sheet portion is forced into contact with the article as the dome is resiliently deformed.
  • the pad is preferably formed of a soft silicone rubber.
  • the sheet portion is preferably applied to the article with that side carrying the colour adjacent to the article, particularly in the case of decals for ceramic ware which are subsequently to be fired, thereby removing the risk of design disruption when the plastics film burns away.
  • the sheet portion is preferably detached from the parent sheet by the pad as the pad moves towards the article, and to facilitate this the sheet is preferably perforated.
  • the parent sheet is preferably in strip form and is provided with a series of design motifs which are longitudinally spaced apart. Each motif is encircled by perforations prior to the pad being applied to the motif.
  • strip facilitates a continuous automatic process in which the strip is indexed past an application station where the successive sheet portions are detached from the strip and applied to articles successively positioned there.
  • the parent sheet is conveniently supported by a paper backing during application of the design to the sheet and to facilitate storage and handling of a roll of the sheet in strip form.
  • a paper backing during application of the design to the sheet and to facilitate storage and handling of a roll of the sheet in strip form.
  • the paper backing may be arranged to be separable from the sheet strip by a simple mechanical stripping operation without the use of water, heat or pressure. This is facilitated by the addition of a release agent to the sheet such as those described in British Patent Specification No. 1 524 960.
  • a machine for applying designs to articles comprises an application station provided with means for locating an article to be decorated, means for conveying a strip of thermo-plastic sheet material carrying design motifs through the application station, a resilient pad and means for urging the resilient pad against the strip to press a portion of the strip against the article located at the application station.
  • the machine comprises a perforating assembly for perforating the strip and means for conveying the perforating assembly from an inoperative position displaced from the application station to an operative position at the application station, to enable the strip to be perforated whilst at the application station and prior to application of the pad.
  • the means for conveying the perforating assembly preferably comprises a carrier which also carries the pad and the pad applying means, and the carrier is arranged to reciprocate transversely of the direction of movement of the strip through the application station.
  • a decalcomania comprises a design motif carried by a thermo-plastics sheet, the motif having been applied to the sheet by printing onto the sheet.
  • FIG. 1 this diagramatically shows a roll 1 of decals suitable for use in the machine of Figure 2.
  • the roll 1 comprises a film 2 of thermo-plastics material supported on a paper layer 3.
  • the film 2 contains a suitable release agent to enable the film 2 to be stripped or peeled mechanically from the paper layer 3, as indicated, without the use of water or heat.
  • the film 2 has been previously printed on its upper surface in the drawing with a series of longitudinally spaced apart design motifs 4 in ceramic colours. The printing is performed by any convenient method but the strip form of the film 2 enables conventional continuous multi-colour printing processes to be employed.
  • the paper layer 3 supports the film 2 during printing and generally facilitates handling of the film.
  • Figures 2 to 4 diagramatically show a machine for automatically applying decals to articles of complex shape.
  • the machine essentially comprises a film transport assembly shown in Figures 2 and 3 for transporting film from a supply roll 1 to an operating station 5, and a punch and transfer application rig, shown in Figure 4, which extends at right angles to the film transport assembly for alternately positioning at the operating station 5 a film perforating assembly 6a, 6b and a transfer application assembly 7a, 7b.
  • the film transport assembly comprises an elongate reciprocating carriage 8 guided by rollers 9 which engage with longitudinal side members 10 of the carriage, the side members 10 being connected by transverse end members 11.
  • Side members 10 incorporate respective upwardly facing elongate vacuum grippers 12 which extend for the full length of members 10 and which enable the film to be held by the carriage and drawn from the supply roll 1 as the carriage is moved to the right in Figures 2 and 3.
  • a fixed rectangular bed 13 mounted on a table 13' lies in the space between carriage side members 10 and is provided towards one end with a pair of upwardly facing suction pads 14, and at its other end, at the operating station 5, with a circular hole 15 surrounded by an upwardly facing annular suction pad 16.
  • the supply roll 1 is as shown in Figure 1, and film 2 supported by paper 3 passes through tensioning rollers 17, with the film 2 on the underside, and along the upper surface of the carriage 8 to a return roller 18 at which a separating blade 19 ensures separation of paper 3 from film 2.
  • the paper 3 proceeds to a rewind spool 20, and the sheet 2 extends further along the carriage 8 and through the operating station 5 to a scrap film position 21.
  • the scrap film position 21 has a series of fixed downwardly facing suction pads 22 for holding the margins of the scrap film.
  • the operation of the film transport assembly will now be described.
  • the film 2 is supported by the paper backing 3 until just prior to the film reaching the operating station 5, in order to minimise the risk of stretching the film, which would distort the design motifs 4.
  • suction is applied to the vacuum grippers 12 to grip the margins of the sheet 2 along the full length of the carriage 8, and, with no suction applied to pads 14, 16 and 22, the carriage 8 is driven fully to the right, to bring the front end of the carriage into the scrap film position 21, as indicated in broken outline 8' in Figure 2.
  • the vacuum supply to grippers 12 is then disconnected to de-activate the grippers 12, and the carriage is returned to its original position shown in full outline in Figure 2, the pads 14, 16 and 22 holding the film whilst the carriage returns.
  • This sequence of carriage movements and film gripping operations ensures that a precise indexing of the film 2 is achieved by each reciprocation of the carriage thereby enabling each design motif 4 to be precisely positioned at the operating station 5.
  • the travel of the carriage 8 is preferably made adjustable to permit different spacings of the design motifs 4.
  • a fixed cross frame 23 extends transversely through the operating station 5, beneath the top of table 13', and is supported on legs 24.
  • the cross frame 23 comprises horizontally spaced parallel guide bars 25 on which is slidably mounted a carrier frame 26 mounting the film perforating assembly 6a, 6b and the transfer application assembly 7a, 7b.
  • a pneumatic ram 26' controls sliding movement of the frame 26, which is shown in Figure 4 in its extreme leftwards position in which the perforating assembly 6a, 6b is located at the operating station 5.
  • the perforating assembly 6a, 6b comprises an upper perforating unit 6a positioned above the carriage 8 comprising a horizontal punch plate 27 provided with a ring of downwardly projecting perforating pins 28, and a lower unit 6b comprising a horizontal die plate 29 provided with corresponding holes to receive the pins 28.
  • the plates 27, 28 are each mounted on respective vertical slide bars 30 and are vertically movable with respect to carrier frame 26 by respective vertical rams 31 mounted on frame 26.
  • the lower ram 31 is operated to bring the plate 29 into the hole 15 and in engagement with the underside of the film 2, which is held in position by suction applied to pad 16, and the upper ram 31 is operated to bring the punch plate 27 down against the upper surface of the film, the perforating pins 28 punching through the film to form a circle of perforations around the motif.
  • the transfer application assembly comprises a workpiece support unit 7b mounted on a vertical ram 32 carried by frame 26, and a dome-shaped pressure pad 33 of silicone rubber is carried by a backing plate 34 and is vertically movable by a further ram 35 carried by frame 26.
  • the vertical movement of plate 34 is guided by slide bars 36.
  • Workpiece support unit 7b comprises a support plate 37 provided with a vacuum supply, not shown, for holding the article 38 on the plate 37, and centring arms 39 for the articles.
  • Suitable automatic means of known type is provided for loading and unloading the support unit 7b with a heated article 38, this operation being performed when the unit 7b is in the retracted condition shown and displaced as shown from the operating station 5.
  • the units 6a and 6b are retracted upwards and downwards respectively by rams 31 and the ram 26 is contracted to move the frame 26 fully to the right in Figure 4 to bring the transfer application assembly 7a, 7b to the operating station 5, whereupon the ram 32 is operated to raise unit 7b until the article is positioned closely adjacent to the underside of the perforated film held by suction pad 16.
  • Ram 35 is then operated to move the pad 33 quickly downwards to punch through the sheet 2, detaching the motif .carrying portion of the film, as assisted by the perforations, which portion is then carried by the pad 33 to the article 38.
  • This film portion is then progressively deformed by the pad to the shape of the article as the pad spreads out over the article, and due to the heat in the article the film portion develops tack and sticks firmly to the contoured surface of the article.
  • the perforated portion of the sheet 2 is necessarily in register with the pad 33 when the pad 33 is punched downwards. This is an advantage over a possible arrangement in which the film is first perforated at a stationary perforating station and is then advanced to a stationary transfer application station.
  • the machine is provided with a master controller, not shown, which provides the timing for the various machine operations.
  • the method and apparatus embodying the invention provide a mechanical transfer application means which can be equally and effectively used for glazed ceramics, either glazed, or vitreous or porous bisque ware, or for glass, vitreous enamel or plastics articles, removing all need to use water or solvent lubricant- adhesives.
  • the method can also be applied equally to ceramic clayware.
  • the centring device required for glost and bisque items is replaced by a soft silicone rubber support for the clay piece.
  • Figure 5 illustrates diagramatically how this is effected where 40 is the clay piece and 41 is the rubber support. By this method the pressure pad is able to apply the transfer without breaking the clay pieces.
  • ceramic ware either glost, bisque or clayware can be processed in the normal ceramic manner to produce a decorated item.
  • bisque and clayware which has to be subsequently glazed it will be found of advantage to add a proportion of glaze or ground frit to the thermo-plastic film to enable it to be both wetted by a glaze and to act as a bridge between substrate and glaze as the film burns away.
  • silicone-glycol block copolymer fluid 0.5 to 2.0 parts: silicone-glycol block copolymer fluid.
  • Film thickness in the range 1 to 3 thousandths of an inch.
  • the backing support paper can be any suitable for the printing process, non-absorbent and compatible with the thermo-plastic film. Silicone coated papers are preferred since these prevent any tendency to sticking whilst the paper and thermo-plastic film are in roll form.
  • thermo-plastic films of the type examplified above typical temperatures for the ware on application of the film are in the range 40 - 60°C.

Landscapes

  • Decoration By Transfer Pictures (AREA)
  • Labeling Devices (AREA)
  • Coloring (AREA)
EP84303886A 1983-06-17 1984-06-08 Méthode et machine pour l'application de décalcomanies Withdrawn EP0146199A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838316546A GB8316546D0 (en) 1983-06-17 1983-06-17 Decalcomanias
GB8316546 1983-06-17

Publications (1)

Publication Number Publication Date
EP0146199A1 true EP0146199A1 (fr) 1985-06-26

Family

ID=10544390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84303886A Withdrawn EP0146199A1 (fr) 1983-06-17 1984-06-08 Méthode et machine pour l'application de décalcomanies

Country Status (3)

Country Link
EP (1) EP0146199A1 (fr)
JP (1) JPS6071256A (fr)
GB (1) GB8316546D0 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285490A1 (fr) * 1987-03-30 1988-10-05 ESSILOR INTERNATIONAL Compagnie Générale d'Optique Procédé et appareil pour coller un film protecteur sur une face d'une série de lentilles ophtalmiques
GB2232638A (en) * 1989-06-10 1990-12-19 H & E Smith Limited Applying decalcomania to tiles
EP0408896A1 (fr) * 1989-07-19 1991-01-23 Landis & Gyr Business Support AG Dispositif pour appliquer des À©tiquettes thermo-adhésives
GB2317852A (en) * 1996-10-03 1998-04-08 Yu Chau Chia Diagram attaching means for plastic products
FR2883984A1 (fr) * 2005-04-04 2006-10-06 Essilor Int Appareil pour conformer un film plan sur une lentille optique, procedes de fonctionnalisation d'une lentille optique au moyen dudit appareil, et lentille ainsi obtenue
US7581832B2 (en) 2006-02-23 2009-09-01 Essilor International (Compagnie Generale D'optique) Polarizing optical element comprising a polarizing film and method for manufacturing such element
CN102602136A (zh) * 2012-03-22 2012-07-25 滁州迪蒙德模具制造有限公司 一种真空高压成型转印装置
US8885251B2 (en) 2005-04-04 2014-11-11 Essilor International (Compagnie Generale D'optique) Apparatus for conforming a planar film on an optical lens, method for functionalizing an optical lens by means of said apparatus, the optical lens so-obtained

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019066668A (ja) * 2017-09-29 2019-04-25 ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ 染色眼鏡レンズの製造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441164A (en) * 1941-08-21 1948-05-11 Miller Pottery Engineering Co Method and apparatus for decorating pottery ware
US3886020A (en) * 1972-08-17 1975-05-27 Anchor Hocking Corp Method of applying decals to surfaces of complex curvature
GB1486824A (en) * 1975-05-14 1977-09-28 Spode Ltd Decoration of ceramic ware
FR2479775A1 (fr) * 1980-04-02 1981-10-09 Oreal Machine assurant la decoupe et la pose d'etiquettes pre-imprimees
GB1602225A (en) * 1978-05-25 1981-11-11 Service Eng Ltd Printing
GB2078614A (en) * 1980-06-27 1982-01-13 Wedgwood Josiah & Sons Ltd Decoration of articles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441164A (en) * 1941-08-21 1948-05-11 Miller Pottery Engineering Co Method and apparatus for decorating pottery ware
US3886020A (en) * 1972-08-17 1975-05-27 Anchor Hocking Corp Method of applying decals to surfaces of complex curvature
GB1486824A (en) * 1975-05-14 1977-09-28 Spode Ltd Decoration of ceramic ware
GB1602225A (en) * 1978-05-25 1981-11-11 Service Eng Ltd Printing
FR2479775A1 (fr) * 1980-04-02 1981-10-09 Oreal Machine assurant la decoupe et la pose d'etiquettes pre-imprimees
GB2078614A (en) * 1980-06-27 1982-01-13 Wedgwood Josiah & Sons Ltd Decoration of articles

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285490A1 (fr) * 1987-03-30 1988-10-05 ESSILOR INTERNATIONAL Compagnie Générale d'Optique Procédé et appareil pour coller un film protecteur sur une face d'une série de lentilles ophtalmiques
FR2613275A1 (fr) * 1987-03-30 1988-10-07 Essilor Int Procede et appareil pour coller un film protecteur sur une face d'une serie de lentilles ophtalmiques
US4826548A (en) * 1987-03-30 1989-05-02 Essilor International (Compagnie Generale D'optique) Method for applying a protective film on one face of a series of ophthalmic lenses
GB2232638A (en) * 1989-06-10 1990-12-19 H & E Smith Limited Applying decalcomania to tiles
EP0408896A1 (fr) * 1989-07-19 1991-01-23 Landis & Gyr Business Support AG Dispositif pour appliquer des À©tiquettes thermo-adhésives
GB2317852A (en) * 1996-10-03 1998-04-08 Yu Chau Chia Diagram attaching means for plastic products
FR2883984A1 (fr) * 2005-04-04 2006-10-06 Essilor Int Appareil pour conformer un film plan sur une lentille optique, procedes de fonctionnalisation d'une lentille optique au moyen dudit appareil, et lentille ainsi obtenue
WO2006105999A1 (fr) * 2005-04-04 2006-10-12 Essilor International (Compagnie Generale D'optique) Dispositif de conformation de film plat sur une lentille optique, procede de fonctionnalisation de lentille optique par le biais de ce dispositif, et lentille optique resultante
US8062444B2 (en) 2005-04-04 2011-11-22 Essilor International (Compagnie Generale D'optique) Apparatus for conforming a planar film on an optical lens, method for functionalizing an optical lens by means of said apparatus, the optical lens so-obtained
US8885251B2 (en) 2005-04-04 2014-11-11 Essilor International (Compagnie Generale D'optique) Apparatus for conforming a planar film on an optical lens, method for functionalizing an optical lens by means of said apparatus, the optical lens so-obtained
US7581832B2 (en) 2006-02-23 2009-09-01 Essilor International (Compagnie Generale D'optique) Polarizing optical element comprising a polarizing film and method for manufacturing such element
CN102602136A (zh) * 2012-03-22 2012-07-25 滁州迪蒙德模具制造有限公司 一种真空高压成型转印装置

Also Published As

Publication number Publication date
JPS6071256A (ja) 1985-04-23
GB8316546D0 (en) 1983-07-20

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR IT LU NL SE

17P Request for examination filed

Effective date: 19851219

17Q First examination report despatched

Effective date: 19861030

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870310

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ROBERTS, WILFRED

Inventor name: MARSHALL, KENNETH