EP2488692B1 - Method and apparatus op increasing the thickness of relief decorations, process and plant for relief decoration of surfaces - Google Patents

Method and apparatus op increasing the thickness of relief decorations, process and plant for relief decoration of surfaces Download PDF

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Publication number
EP2488692B1
EP2488692B1 EP10771192.1A EP10771192A EP2488692B1 EP 2488692 B1 EP2488692 B1 EP 2488692B1 EP 10771192 A EP10771192 A EP 10771192A EP 2488692 B1 EP2488692 B1 EP 2488692B1
Authority
EP
European Patent Office
Prior art keywords
decorated
relief
thermoadhesive
powdered material
support
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.)
Active
Application number
EP10771192.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2488692A1 (en
Inventor
Gilberto Menin
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.)
Menphis SpA
Original Assignee
Menphis SpA
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Filing date
Publication date
Application filed by Menphis SpA filed Critical Menphis SpA
Publication of EP2488692A1 publication Critical patent/EP2488692A1/en
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Publication of EP2488692B1 publication Critical patent/EP2488692B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06Q—DECORATING TEXTILES
    • D06Q1/00—Decorating textiles
    • D06Q1/10—Decorating textiles by treatment with, or fixation of, a particulate material, e.g. mica, glass beads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/02—Apparatus specially adapted for applying particulate materials to surfaces using fluidised-bed techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • B05D1/22—Processes for applying liquids or other fluent materials performed by dipping using fluidised-bed technique
    • B05D1/24—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/02—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a matt or rough surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/061—Special surface effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B05D3/0227—Pretreatment, e.g. heating the substrate with IR heaters

Definitions

  • the present invention relates to a method and an apparatus for increasing the thickness of relief decorations and in addition to a process and a plant for relief decoration of surfaces.
  • the present invention relates to execution of three-dimensional decorations defined by portions in relief relative to the base surface to be decorated, consisting of added decorative thermoplastic material.
  • the present invention relates to the decoration of objects in the form of sheets such as fabrics, leather, imitation leather, etc.
  • the relief decoration of surfaces can be carried out with added materials through hot transfer of the decoration from support paper or films to the object to be decorated.
  • the material constituting the decoration is first applied to the support film through known methods.
  • the decoration on the support film is in relief.
  • the support film is subsequently applied to the surface to be decorated and pressed against the same, supplying heat through a heated calender for example. Heat and pressure cause transfer of the decoration from the film to the object to be decorated.
  • the film is then separated from the object and the decoration remains on the surface of the object itself.
  • Document FR 2.135.315 discloses a process for covering glass bottles with plastic material.
  • the technical task underlying the present invention is to propose a method and an apparatus for increasing the thickness of relief decorations and a process and plant for the relief decoration of surfaces overcoming the above mentioned drawbacks of the known art.
  • the present invention aims at making available a method and an apparatus for increasing the thickness of relief decorations first of all enabling the three-dimensional effect of the decoration to be made more apparent and in addition the thickness to be controlled and regions to be generated which have more or less marked relief areas in the same decoration.
  • the present invention relates to a method of increasing the thickness of relief decorations, comprising:
  • the fluid bed is generated by introducing a fluid under pressure through the powdered material.
  • the method comprises a plurality of steps ii) alternated with steps iii).
  • step iii) the powdered material in excess is removed from the decorated surface.
  • fluid introduction takes place with a pressure included between about 1 bar and about 5 bars.
  • step ii) the portion of decorative thermoplastic or thermoadhesive material is brought to a temperature "T" included between about 120°C and about 170°C.
  • the powdered material has a particle size included between about 100 ⁇ m and about 500 ⁇ m.
  • the powdered material is a thermoplastic or thermoadhesive material, preferably selected from the group comprising: polyamide, polyethylene, acrylic-polyurethane, glass, ceramics.
  • the powdered material is selected from the group comprising: glass, ceramics, wood, plastic material, steel.
  • the powdered material is selected from the group comprising: glass, ceramics, wood, plastic material, steel.
  • it is defined by transparent or coloured pyroceram balls.
  • the powdered material has a neutral colour.
  • the decorative thermoplastic or thermoadhesive material is selected from the group comprising: polyamide, polyethylene.
  • the present invention discloses an apparatus for increasing the thickness of relief decorations, comprising: at least one support for a decorated object, said decorated object having at least one portion in relief of decorative thermoplastic or thermoadhesive material disposed on a decorated surface of said object; at least one heating device acting on said support; at least one fluid-bed container (16) having a wall provided with holes and delimiting a holding volume for the powdered material; means for admission of fluid under pressure into the holding volume, through said wall provided with holes; means for transferring the decorated object from said support to said container and/or vice versa.
  • the apparatus comprises a first support and a first heating device disposed upstream of the fluid-bed container and a second support and a second heating device disposed downstream of said fluid-bed container relative to a feeding direction (X) of the decorated objects.
  • said at least one support comprises a conveyor belt.
  • said at least one heating device comprises at least one lamp facing said support.
  • the present invention relates to a process for relief decoration of surfaces, comprising: applying at least one portion in relief of decorative thermoplastic or thermoadhesive material onto a surface of an object to be decorated; characterised in that it further comprises a method as above described.
  • some regions of the surface to be decorated are left clear of the decorative thermoplastic or thermoadhesive material.
  • the application comprises: providing a support film carrying the portion of decorative thermoplastic or thermoadhesive material, applying and pressing the support film against the object's surface, heating at least the portion of decorative thermoplastic or thermoadhesive material for causing transfer thereof onto said surface, separating the support film from the decorated object.
  • the present invention relates to a plant for relief decoration of surfaces comprising: means for applying at least one portion in relief of decorative thermoplastic or thermoadhesive material onto a surface of an object to be decorated; characterised in that it further comprises an apparatus as above described, wherein said at least one support is operatively disposed downstream of the application means.
  • the application means comprises a heated calender.
  • Plant 1 is designed for decoration of surfaces 2, preferably although not exclusively, of objects in the form of sheets, such as leather, imitation leather or fabrics.
  • thermoplastic or thermoadhesive material it is generally intended a material that at room temperature is substantially stiff and acquires malleability - i.e. becomes soft - and sticky properties under the action of heat. Therefore the term “thermoplastic or thermoadhesive material” refers not only to true plastic materials (polymers, such as polyethylene, polyamide, acrylic-polyurethane) but also to other products such as pyrocerams.
  • the decorative thermoplastic or thermoadhesive material can be coloured (in a single colour or in different colours), transparent, opaque, etc.
  • Plant 1 therefore comprises means 6 suitable to apply the thermoplastic or thermoadhesive material to the surface 2 of the object 3.
  • the object 3 is a continuous sheet of fabric, leather or imitation leather unrolled from a reel, not shown, and conveyed through a calender 7 made up of a pair of heated rollers 8. Plant 1 herein shown therefore works continuously.
  • the plant works on smaller objects (such as pieces of leather, fabric or imitation leather, tiles, individual pieces, etc.) with discrete work cycles.
  • a press is for example present instead of calender 7.
  • a support film 9 is conveyed between rollers 8, on which film the portions 4 of decorative thermoplastic or thermoadhesive material to be transferred onto the object 3 are attached.
  • This support film 9, also known as transfer paper, is produced following techniques known by themselves and therefore herein not described.
  • Upstream of rollers 8, said portions 4 of decorative thermoplastic or thermoadhesive material face surface 2 of sheet 3.
  • the support film 9 is coupled to surface 2 and pressed against it.
  • the support film 9 with the decorative thermoplastic or thermoadhesive material and sheet 3 are heated. Pressure and heat cause adhesion of the decoration to surface 2.
  • the film 9 Downstream of rollers 8 relative to a feeding direction "X" of the sheet 3, the film 9 is separated, by a hot or cold treatment, from sheet 3 on which the portions 4 of the decorative thermoplastic or thermoadhesive material defining the relief decorations (shown in Fig. 3 ) are now attached.
  • Plant 1 further comprises an apparatus 10 ( Fig. 1 ) suitable to increase the thickness of the relief decorations, preferably but not exclusively obtained following the previously described working.
  • apparatus 10 comprises a first support 11 in turn comprising a conveyor belt 12 passing over a pair of drive rollers 13.
  • the conveyor belt 12 preferably comprises non-stick material, Teflon® for example.
  • the sheet 3 bears on an upper surface of the conveyor belt 12 and its decorated surface faces upwards.
  • the sheet 3 is fed along the feeding direction "X".
  • a heating device 14 defined by a series of infrared lamps 15 sending out radiation to the sheet during passage thereof is installed above the conveyor belt 12.
  • the fluid-bed container 16 Disposed downstream of the first support 11 is a fluid-bed container 16 inside which the sheet 3 is caused to pass.
  • the fluid-bed container 16 comprises a vat 17 inside which a wall 18 is disposed which is provided with a plurality of holes (having a diameter in the order of microns).
  • the wall 18 divides the inner space confined by vat 17 into an upper holding volume 19 that is open upwards and a lower hollow space 20.
  • the wall 18 delimits the upper holding volume 19 at the lower part thereof.
  • the lower hollow space 20 is in fluid communication with a source of fluid (preferably air) under pressure, such as a compressor, through a duct 21.
  • a source of fluid preferably air
  • the upper holding volume 19 is filled with powdered material 22 that is the same as, or different from the material constituting the decoration already laid down on sheet 3.
  • the powdered material 22 consists of plastic granules (polyethylene or polyamide, acrylic-polyurethane, for example) or powdered products in general, such as transparent o coloured balls of pyroceram or also steel, wood.
  • the powdered material 22 therefore can be either of the thermoplastic or thermoadhesive type (plastic material, glass, ceramics) according to the above definition, or not (steel, wood).
  • the powdered material 22 preferably has a particle size (expressed as the mean diameter of the granules) included between about 100 ⁇ m and about 500 ⁇ m.
  • the powdered material 22 can be coloured, transparent or neutral.
  • the fluid-bed container 16 further comprises a guide roller 23 disposed close to the first support 11 and parallel to the drive rollers 13, the function of which is to guide and drag along the sheet 3 coming from said first support 11 at the inside of vat 17.
  • a second support 24 Positioned downstream of the fluid-bed container 16 is a second support 24 that can have the same structure as the first support 11 (conveyor belt 12, drive rollers 13, heating device 14 and infrared lamps 15).
  • a further guide roller not shown can be also provided; it is disposed on the fluid-bed container 16 and close to the second support 24, its function being that of guiding and dragging along the sheet 3 coming from vat 17 on the second support 24.
  • the fluid source is activated and admits air into the hollow space 20 at a pressure included between about 1 bar and 5 bar.
  • the air filters through the holes of wall 18 and the powdered material 22 contained in the upper holding volume 19 of vat 17.
  • the air flow passes through the powdered material 22 it fills the space between the particles, and a condition is reached at which the aerodynamic force acting on the particles is capable of counteracting the forces of gravity, the granular solid starts expanding and the upper surface of the bed takes a movable profile similar to the free surface of a liquid.
  • the decorated sheet 3 coming from calender 7 passes under the infrared lamps 15 disposed above the first support 11 and is heated to a temperature "T" (preferably included between about 120°C and about 170°C) sufficient to make portions 4 of thermoplastic material sticky.
  • sheet 3 falls or is dragged along into vat 17 so as to dip it into the fluidized powdered material 22.
  • the particles of the powdered material 22 adhere to and/or fully or partly penetrate into the portions 4 of heated decorative thermoplastic or thermoadhesive material.
  • a stirring device can transversely (relative to the feeding direction "X") move the sheet in transit to further make uniform the distribution of the powder particles on surface 2.
  • sheet 3 is drawn out of the fluid bed and dragged along on the second support 24, where it passes under the infrared lamps 15 disposed above the second support 24 and is heated to a temperature (preferably included between about 120°C and about 170°C) sufficient to cause partial melting of the portions 4 of decorative thermoplastic or thermoadhesive material and the powdered material 22 ((if it is thermoplastic or thermoadhesive) that has adhered to the portions 4 of decorative thermoplastic or thermoadhesive material, and mixing of them occurs.
  • the powdered material 22 becomes part of the portions 4 of decorative thermoplastic or thermoadhesive material and increases thickness thereof (as shown in Fig. 4 ).
  • the powdered material 22 is of a neutral colour, so that once incorporated into the portions 4 of decorative thermoplastic or thermoadhesive material it does not alter the original colours.
  • the powdered material 22 can also be coloured so as to provide particular chromatic effects to the final decoration.
  • the powdered material that during dipping into the fluid bed 19 is deposited on the free regions 5 of surface 2 (which are devoid of the portions 4 of decorative thermoplastic material) does not adhere to these regions 5 and can be easily eliminated before or after the second heating step.
  • the method of the invention can also contemplate several dipping operations into the fluid bed and several heating steps, each carried out between one dipping operation and the following one.
  • the present invention reaches the intended purposes and achieves important advantages.
  • the method according to the present invention enables the thickness of the decoration to be increased in a simple, quick and efficient manner.
  • portions with a greater surface area tend to accumulate more powdered material, which will involve a greater thickness increase than where there are smaller portions.
  • the method of the invention due to use of the fluid bed, allows the powdered material to be distributed evenly on the portions of decorative thermoplastic or thermoadhesive material of the decorated surface without uncontrolled formation of accumulated material at particular points.
  • the variables of the method and consequently the features of the finished product can be controlled in a safer manner.
  • the same due to the control of the powdered material distribution, the same is prevented from adhering to the surface regions on which the portions of decorative thermoplastic or thermoadhesive material are not present.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Laminated Bodies (AREA)
  • Special Spraying Apparatus (AREA)
EP10771192.1A 2009-10-12 2010-09-24 Method and apparatus op increasing the thickness of relief decorations, process and plant for relief decoration of surfaces Active EP2488692B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2009A001734A IT1395857B1 (it) 2009-10-12 2009-10-12 Metodo ed apparato per incrementare lo spessore di decorazioni in rilievo, processo ed impianto per la decorazione in rilievo di superfici
PCT/IB2010/054308 WO2011045694A1 (en) 2009-10-12 2010-09-24 Method and apparatus op increasing the thickness of relief decorations, process and plant for relief decoration of surfaces

Publications (2)

Publication Number Publication Date
EP2488692A1 EP2488692A1 (en) 2012-08-22
EP2488692B1 true EP2488692B1 (en) 2017-12-06

Family

ID=42668655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10771192.1A Active EP2488692B1 (en) 2009-10-12 2010-09-24 Method and apparatus op increasing the thickness of relief decorations, process and plant for relief decoration of surfaces

Country Status (6)

Country Link
EP (1) EP2488692B1 (tr)
BR (1) BR112012008418B1 (tr)
ES (1) ES2661550T3 (tr)
IT (1) IT1395857B1 (tr)
TR (1) TR201803021T4 (tr)
WO (1) WO2011045694A1 (tr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMO20110091A1 (it) * 2011-04-29 2012-10-30 Maria Teresa Marshalek Procedimento per la fabbricazione di manufatti in foglio, particolarmente tessuti, pelli o simili, destinati alla realizzazione di capi e accessori di abbigliamento, tappezzeria o simili
ITMO20110092A1 (it) * 2011-04-29 2012-10-30 Maria Teresa Marshalek Procedimento per la fabbricazione di manufatti in foglio, particolarmente tessuti, pelli o simili, destinati alla realizzazione di capi e accessori di abbigliamento, tappezzeria o simili
IT202100018608A1 (it) * 2021-07-14 2023-01-14 I Dek S R L Metodo ed impianto per la realizzazione di un film plastico decorativo flessibile per il rivestimento di manufatti e film così realizzato.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE661657A (tr) * 1964-03-25
US3523031A (en) * 1967-03-01 1970-08-04 Ben Walters Process for making ornamental plastic sheeting
DE2219470A1 (de) * 1971-05-06 1972-11-23 Pantasote Italiana S.r.l., Malgesso, Varese (Italien) Verfahren und Einrichtung zum Überziehen von Flaschen, insbesondere von Glasflaschen, mit Kunststoff, sowie Flaschen, die nach dem Verfahren und mittels der Einrichtung erhalten wurden

Also Published As

Publication number Publication date
WO2011045694A1 (en) 2011-04-21
ITMI20091734A1 (it) 2011-04-13
EP2488692A1 (en) 2012-08-22
TR201803021T4 (tr) 2018-03-21
IT1395857B1 (it) 2012-10-26
ES2661550T3 (es) 2018-04-02
BR112012008418B1 (pt) 2020-02-04
BR112012008418A2 (pt) 2017-06-13

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