CN100500448C - Color laser marking - Google Patents
Color laser marking Download PDFInfo
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- CN100500448C CN100500448C CNB2004800371970A CN200480037197A CN100500448C CN 100500448 C CN100500448 C CN 100500448C CN B2004800371970 A CNB2004800371970 A CN B2004800371970A CN 200480037197 A CN200480037197 A CN 200480037197A CN 100500448 C CN100500448 C CN 100500448C
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Abstract
The invention relates to color laser marking and laser writing of plastics, which is based on welding of a polymer-containing writing medium to the plastic surface.
Description
The present invention relates to color laser marking and laser data plate based on the plastics of the welding of data plate medium that contains polymer and frosting.
By means of the laser beam of various wavelength, can permanent marks and data plate material and product.
By the effect of laser energy,
Material from (intrinsic reaction) on one's body or
2. on the data plate medium of transferring to from the outside on the material that will imprint
Carry out mark and data plate.
For example, in labeling method 1) in, metal is made a response to laser irradiation with various tempering colours, in irradiation position timber deepening (charing), and depends on coloring plastic, and plastics show shallow or dark variable color (foaming, carbonization) as PVC.
This effect in plastics often strengthens or causes by the adding of laser-sensitive pigment.Shortcoming is usually, and only reaching " color " of white and black or various grey and canescence grade, and laser-sensitive pigment must add in the whole plastic material in the masterbatch.
If in labeling method 2) in, the laser beam of appropriate energy and wavelength (for example IR laser) is beaten on the data plate medium and this contacts with the material that will imprint, and the medium of then will imprinting is transferred on the material and is fixed thereon.Adopt this mode, colored and black/white imprints or mark is possible.With for example in masterbatch adds (data plate method 1), compare, in the quantity of the actual laser pigment that requires of this data plate significantly still less.
By containing the laser energy absorption agent, and (depending on required color) is mixed with the frit of inorganic and organic pigment, organic metal material or metal dust or data plate medium that the frit precursor is formed is well known to a person skilled in the art at this.The method of this type for example is described in WO99/16625, US6238847 and WO 99/25562.
Be applied directly on the medium that to imprint at these mixtures,, brush for example by spray, sprinkle, static electrification etc. are applied on it, or are applied to carrier substrate, after on band, the film, adopt necessary laser energy/density (cw laser (cw=continuous wave), 1-30W or 100W/cm
2-5MW/cm
2) irradiation and mark.Adopt this mode, can imprint glass, pottery, metal, stone, plastics and composite.
Described the mixture of being made up of glass pigment and plastic grain in German prospectus DE 10136479A1 and DE 19942316A1, they are laser-sensitives for the color laser marking and the data plate of plastics especially.
Yet, be that from the common trait of coloured plastics material mark well known in the prior art they still have excessive fixedly colouring agent on frosting after laser data plate technology, this unsharp label/inscription that often causes blotting (percussion back powder vestiges), they also may ooze out later on or frosting (ausbl ü hen) or peel off.
This makes essential consuming time and causes the back cleaning and the drying steps of cost, and to imprint online production technology as the last process step be not wish especially or unacceptable for having product for this.In addition, in use under influences such as corresponding environment this coloured label or inscription fade.
Therefore purpose of the present invention is to find a kind ofly under the effect of laser, causes the laser labelling absolute color fastness, permanent and wear-resisting of plastics and the method for data plate.
Astoundingly, weld with frosting, then can coloured mode imprint plastics if find the data plate medium under the effect of laser, will contain polymer now.Must not comprise the material of any absorption laser at these plastics that will imprint self.Technical solution is in the mode that limits medium to be imprinted in energy absorber and real colouration to separate.
Therefore the present invention provides permanent and the wear-resisting coloured data plate or the labeling method of plastics, the salient point of this method is: use coating systems, this coating systems is formed by overlapping placement up and down and with separated two layers of carrier film, wherein ground floor is by comprising inherently or forming as the plastics that layer form comprises energy absorber, be used as the data plate medium and comprise colouring agent and polymers compositions with the second layer that is applied on the carrier film, wherein under the effect at laser between data plate/mark phase, polymers compositions and frosting are welded.
Term " coloured laser labelling and data plate " is used to be illustrated in use institute's chromatic colour and achromatic color, comprises black, the mark and the data plate of plastics under the condition of white and all tones of gray.
In the method according to the invention,
Any blot and/or the ooze out later on/frosting that has prevented colouring agent/peel off,
Saved undesirable cleaning after real mark and data plate technology,
Guaranteed to use afterwards the color fastness of period marked and data plate,
All organic and uses inorganic colourant are possible.
Compared with prior art, laser energy is not used in the distillation of colouring agent or the fusion of glass pigment among the present invention, but is used for the welding of imprinting medium polymers compositions and frosting.Contain the data plate medium of polymer and avoid hot-spot to realize the mark and the data plate of color fastness simultaneously by even heating.
In the method according to the invention, the polymers compositions in the softening or fusion data plate medium by laser energy.Polymers compositions dissolves and welds with frosting enduringly then with the colouring agent of data plate medium.
At this coating systems particularly, the coating systems as shown in Fig. 1-4, verified is specially suitable.Fig. 1 shows the plastic layer of being made up of carrier layer (1 ') and (1 "), this carrier layer be laser-transmissible and to energy absorber layer laser stability and that have laser-sensitive (2) as the intermediate layer.Layer (1 '), (1 ") and (2) is engaged with each other as a unit.The data plate medium (3) that will contain polymer is applied to conduct layer on this carrier layer system, and for example the form (adopting or do not adopt carrier) with paste applies.Carrier layer (1 ") and layer (3) be firm engagement each other, and be for example by welding, bonding, lamination etc.
Fig. 2 shows as the layer structure derived from Fig. 1 of further variation scheme, but do not have carrier layer (1 ').
Form contrast with Fig. 1 and 2, Fig. 3 shows, the data plate medium can be equally be made up of two layers (3 ', 3 "), wherein applies polymers compositions and apply coloring agent layer (3 ") as additional layer (3 ') with on layer (3 ') on layer (1 ").
Fig. 4 shows the compression layer structure that contains carrier layer (4), and this carrier layer is mixed with energy absorber and applied with the data plate medium (3) that contains polymer.
To contain and imprint the layer (3) of medium and be placed on the plastics that to imprint and adopt necessary compaction pressure or proper adhesive (but permanent or pressure/heat activation) closely to contact with wanting the regional of mark.Use suitable laser then, preferably in beam deflection or mask method, imprint or mark.
The suitable material that is used for carrier layer (1 ', 1 ") comprises all plastics, and these plastics are transparent ideally and/or translucent for laser in the setted wavelength scope and can damage by the interaction with laser or destroy.If carrier layer system (1) is made up of two or more layers (1 ', 1 "), then these layers can be identical or different.
Suitable plastic is thermoplastic preferably.Especially, plastics are by polyester, Merlon, polyimides, polyacetals, polyethylene, polypropylene, polyamide, polyester-ester, polyether ester, polyphenylene oxide, poly-acetal, polybutylene terephthalate (PBT), polymethyl methacrylate, polyvinyl acetal, polyvinyl chloride, polystyrene, acrylonitrile-butadiene-styrene (ABS) (ABS), acrylonitrile-styrene-acrylic compounds ester (ASA), polyethers-sulfone and polyethers-ketone, and copolymer and/or mixture.
In the plastics of mentioning, especially preferably polyester, Merlon and polyimides.
What be specially adapted to the data plate on three-dimensional plastic parts or surface and mark is the amorphous plastics carrier film of being made by PETG, polyester and polyamide that does not stretch.
Plastic carrier preferably uses with the form of film, bar or sheet material and preferably has layer thickness and is 2-100 μ m.The maximum layer thickness of carrier layer system (1) is 250 μ m, and with it whether by a carrier layer or form irrelevant by a plurality of carrier layer (1 ', 1 ", etc.).
It is 0.01-20wt% that the carrier layer system comprises quantity, preferred 0.05-15wt%, the energy absorber of 0.1-10wt% especially.
Energy absorber evenly can be distributed in carrier layer at this, as shown in Figure 4, or be applied to (1 ") as the form of layer and go up (Fig. 2), or be encapsulated between two or more plastic carrier layers (1 ', 1 ") (Fig. 1).Under latter event, be stirred into energy absorber in binding agent and/or the adhesive and be applied on the plastic carrier layer (1 '), for example by brushing, spray, printing, roll-in, blade coating and carry out and, for example undertaken by gummed or heat lamination with the after-applied second plastic carrier layer.
If absorber layer is positioned at that layer (1 ") is gone up or between two layers (1 ', 1 "), then its thickness is 50nm-100 μ m, preferred 100nm-50 μ m and 150nm-10 μ m especially.
The suitable binder or the adhesive that are used for the energy absorber layer be, for example the copolymer of celluloid, cellulose acetate, hydrolysis/polyvinyl alcohol of acetalization, PVP, polyvinyl butyral resin, polyacrylate and ethylene/vinyl acrylate, epoxy resin, polyester, polyisobutene, polyamide or its mixture.Binding agent or adhesive can be realized the even coating of energy absorber on plastic carrier coating systems (1).
Operable energy absorber is all material that enough absorbs laser energy and convert it into heat energy in the setted wavelength scope.
The appropriate energy absorbent that is used for mark is preferably based on carbon, metal oxide, for example Sn (Sb) O
2, TiO
2, carbon black, anthracene, IR absorbability colouring agent Li such as perylene/Rylene, pentaerythrite, copper hydroxide phosphate, molybdenum bisuphide, antimony oxide (III) and bismoclite, sheet form, particularly transparent or semitransparent base material, this base material is by for example, phyllosilicate, for example synthetic or natural mica, talcum, kaolin, glass flake, SiO
2Thin slice or synthetic carrier-free thin slice.Suitable in addition sheet form metal oxide, for example graphite flake of sheet form iron oxide, aluminium oxide, titanium dioxide, silica, LCP (liquid crystal polymer), holographic pigment, conducting pigment or coating in addition.
Operable sheet form pigment also has metal dust, and they can be uncoated or cover with one or more metal oxide layers; Preference is Al, Cu, Cr, Fe, Au, Ag and steel thin slice in this way.If the sheet metal of corrosion-vulnerable, for example Al, Fe or steel thin slice will use with uncoated form, and then they preferably apply with the protectiveness polymeric layer.
Except that the sheet form base material, also can use spherical pigment, for example constitute by Al, Cu, Cr, Fe, Au, Ag and/or Fe.
Particularly preferred base material is the mica flake with one or more metal oxide-coated.The metal oxide of the existing colourless high index of refraction of metal oxide as used herein, as particularly titanium dioxide, antimony oxide (III), zinc oxide, tin oxide and/or zirconium dioxide, nonferrous metal oxides is also arranged, for example chromium oxide, nickel oxide, cupric oxide, cobalt oxide and particularly iron oxide (Fe
2O
3, Fe
3O
4).The energy absorber that uses is special preferably separately or the antimony oxide (III) that combines with tin oxide.
These base materials are known and in most of the cases are commercially available, for example the trade mark of MerckKGaA company
Lazerflair, and/or can be by standard method preparation well known by persons skilled in the art.Based on the pigment of transparent or semitransparent sheet form base material, for example be described in Deutsche Bundespatent and patent application 1467468,1959998,2009566,2214454,2215191,2244298,2313331,2522572,3137808,3137809,3151343,3151354,3151355,3211602,3235017,3842330 and 4441223.
The SiO that applies
2Thin slice is disclosed in, for example WO93/08237 (wet chemistry coating) and DE-OS 19614637 (CVD method).
Multi-layer pigments based on phyllosilicate is disclosed in, for example German prospectus DE19618569, and DE 19638708, DE 19707806 and DE 19803550.Specially suitable is the multi-layer pigments with following structure:
Mica+TiO
2+ SiO
2+ TiO
2
Mica+TiO
2+ SiO
2+ TiO
2/ Fe
2O
3
Mica+TiO
2+ SiO
2+ (Sn, Sb) O
2
SiO
2Thin slice+TiO
2+ SiO
2+ TiO
2
Particularly preferred laser absorption material is En, perylene/Rylene, for example three or four-Rylen tetracarboxylic imidodicarbonic diamide, pentaerythrite, copper hydroxide phosphate, molybdenum bisuphide, antimony oxide (III), bismoclite, carbon, antimony, Sn (Sb) O
2, TiO
2, silicate, SiO
2The mica and/or the SiO of thin slice, usefulness metal oxide-coated
2Thin slice, conducting pigment, sulfide, phosphate, BiOCl, or its mixture.
Energy absorber also can be the mixture that is formed by two or more components.
The data plate medium can be applied to (Fig. 1 or 4) on the carrier system as paste form or as the layer that contains carrier.The data plate medium is basically by binding agent, colouring agent, polymers compositions and additive composition randomly.
Organic and inorganic colourant both is applicable to data plate.Suitable is all that colouring agent well known by persons skilled in the art, and they do not decompose between the light period and be that light is stable at laser.Colouring agent also can be the mixture that is formed by two or more materials.The ratio of colouring agent in the data plate medium is preferably 0.1-30wt%, and 0.2-20wt% and very particularly preferably 0.5-10wt% especially are based on the polymers compositions fraction.
Suitable colouring agent is all organic and inorganic dyestuff and pigment well known by persons skilled in the art.Specially suitable is AZOpigments and dyestuff, for example monoazo and disazo pigment and dyestuff, many ring pigment and dyestuff, Naphtocyclinon (Perinone) perylene for example, anthraquinone, flavanthrone, isoindolinone, pyranthrone, anthrapyrimidine, quinacridone, thioindigo dioxazine, indanthrone, diketopyrrolopyrrolecocrystals, quinoline promise phthalein ketone, metal conformability pigment and dyestuff, for example, phthalocyanine, azo, azomethine, dioxime and isoindolinone complex, metallic pigments, oxide and oxide hydroxide pigment, the oxide mixed dyes of Fe, slaine pigment, for example chromate and chromate-molybdate mixed dyes of Fe, carbonate pigment, sulfide and sulfide-selenium pigment, complex salts pigment and water glass color.
In above-mentioned colouring agent, especially preferably copper phthalocyanine, dioxazine, anthraquinone, monoazo and disazo pigment, diketopyrrolopyrrolecocrystals, encircle pigment, anthrapyrimidine, quinacridone, quinoline promise phthalein ketone, Naphtocyclinon, perylene, acridine, azo dyes, phthalocyanine, xanthene, azophenlyene, colored oxide and oxide hydroxide pigment, oxide mixed dyes of Fe, sulfide and sulfide-selenium pigment, carbonate pigment, chromate pigment, chromate-molybdate mixed dyes of Fe, complex salts pigment and water glass color more.
The polymers compositions of data plate in the medium be medium neccessary composition and can be for example, by the low melt polymer, the copolymer of polyester, Merlon, polyolefin, polystyrene, polyimides, polyamide, polyacetals and described polymer for example, and the terpolymer of vinyl chloride, dicarboxylic ester and vinyl acetate or hydroxy acrylate/methyl acrylate, or its mixture is formed.Polymers compositions can be dissolved in the data plate medium or/and be not dissolved in wherein and exist as fine powder form.Granularity is preferably 10nm-100 μ m, 100nm-50 μ m and very particularly preferably 500nm-15 μ m especially.
Also can use the mixture of being made up of different polymers compositions or particle, wherein granularity can be different with the chemical composition both.
Randomly, also can add inorganic divided powder,, dissolve (at this from polymeric matrix) with the data plate that guarantees the data plate medium or mark accurate as polymolecularity silicic acid or titanium oxide.
The data plate medium preferably comprises 20-90wt%, and 40-60wt% and very particularly preferably 40-90wt% polymers compositions especially are based on the gross mass of polymers compositions+colouring agent+binding agent.
Polymers compositions/colouring agent ratio is preferably 80:1-1:1, especially 50:1-2:1, very particularly preferably 20:1-5:1.
Polymers compositions/energy absorber ratio is preferably 70:1-1:1, especially 40:1-2:1, very particularly preferably 20:1-3:1.
As further component, the data plate medium comprises binding agent.Binding agent can be realized data plate layer (3) on carrier layer (1), or to carrier, for example even coating on glass or the plastics.
All binding agents well known by persons skilled in the art are suitable, cellulose, cellulose derivative especially, for example celluloid, cellulose acetate, hydrolysis/polyvinyl alcohol of acetalization, PVP, polyacrylate, and the copolymer of ethylene/vinyl acrylate, polyvinyl butyral resin, epoxy resin, polyester, polyisobutene, polyamide.
Depend on the type of plastics, all laser instruments well known by persons skilled in the art can be used for data plate/mark.Laser parameter depends on application separately and can easily be determined by those skilled in the art.
By test specimen being introduced pulse laser, preferred CO
2Or Nd:YAG or Nd:YVO
4The light path of laser instrument adopts the data plate of laser instrument.In addition, adopt excimer laser, for example the data plate by mask technique also is possible.Yet, also can use other conventional laser device type to reach required result with the wavelength in the high absorbing area territory of the laser absorption material that uses.The mark that obtains is determined by the irradiation time (or in the umber of pulse under the pulse laser situation) of laser instrument and the plastics system or the coating system of irradiation power (the pulse power density under the pulse laser situation) and use.The power of the laser instrument that uses depends on application separately and can easily be determined by those skilled in the art under specific circumstances.
The wavelength of the laser instrument that uses is generally 157nm-10.6 μ m, preferred 532nm-10.6 μ m.For example can mention CO at this
2Laser instrument (10.6 μ m) and Nd:YAG and Nd:YVO
4Laser instrument (1064 or 532nm) or pulse UV laser instrument.Excimer laser has following wavelength: F
2Excimer laser (157nm), ArF excimer laser (193nm), KrCl excimer laser (222nm), KrF excimer laser (248nm), XeCl excimer laser (308nm), XeF excimer laser (351nm), wavelength are the frequency multiplication Nd:YAG laser instrument of 355nm (frequency three multiplications) or 265nm (frequency four multiplications).Especially preferably use Nd:YAG and YVO
4Laser instrument (1064 or 532nm) and CO
2Laser instrument.
When using pulse laser, pulse frequency is generally 1-100kHz.The corresponding laser instrument that can use in the method according to the invention is commercially available.
Preferably use at the various lasers wavelength YAG laser instrument among 1064nm or the 808-980nm, YVO
4Laser instrument or CO
2Laser instrument.Mark all is possible under two kinds of situations in cw operation and in pulse operation.2-300 watt of the appropriate power spectrum covering and the pulse frequency of data plate laser instrument are 1-200kHz.
Plastics inscription according to the present invention can be used for all following situations, wherein use printing, impression or artistic carving mark or data plate plastics up to now, or be used for all following situations, wherein up to now the color fastness with nonvolatil data plate/mark may, or data plate/mark only is only possible in plastics self under the use laser-sensitive pigment condition.Advantage according to label type of the present invention is a color fastness at this, and permanent and flexibility/individual character is promptly carried out mark and do not had mask, letterpress or develop and print rules.
Can mark and the plastics of data plate any kind and shape, for example
In packaging industry (the batch of material number is suitable for the date, illustrates)
In area of security (anti-fake code and identifier)
In motor vehicle and airplane industry (cable, plug, switch, container, functional part, flexible pipe, lid, handle, control stick etc.)
In medical skill (equipment, instrument, implant)
In agricultural (animal mark)
In electrical engineering/electronics (cable, plug, switch, functional part, model label, power label)
In the decoration field (logo, the model identification of all types equipment, container, toy, instrument, single marking thing).
The present invention also provides the plastics that color marker or data plate are arranged by the method according to this invention.
Following embodiment wishes to explain the present invention, but does not limit the present invention.
Embodiment
Embodiment 1: the preparation of energy absorber layer (2)
18.5g ethyl acetate
1.5g PVB (polyvinyl butyral resin,
, Wacker-Chemie company)
3-5g Sn (Sb) O
2(d
50Value＜1.1 μ m) (Du Pont company)
Polyvinyl butyral resin is dissolved in the solvent ethyl acetate of initial introducing and fully and stirs.Add energy absorber Sn (Sb) O to wherein stirring subsequently
2, and prepare even paste.The quantity of energy absorber depends on the energy absorption of colouring agent and will be adjusted to this.
Use 30 μ m scrapers that paste is spread into film thickness and be 5-250 μ m, also dry on the polyester film of preferred 23 μ m.
For example, use polypropylene screen that PE (polyethylene) applies (P ü tz company
Film) under about 140 ℃, carries out heat lamination.
Embodiment 2: the preparation of energy absorber layer (2)
18.5g ethyl acetate
1.5g PVB (polyvinyl butyral resin,
, Wacker-Chemie company)
2.0g channel black (d
50Value＜17nm) (special type of Degussa company black 6)
As among the embodiment 1, processing.The absorbent that uses is a channel black.
Use 90 μ m scrapers that paste is spread into film thickness as also dry on the polyester film of 5-250 μ m.Can another polyester film or polypropylene screen be applied to (as described in the embodiment 1) on the absorber layer by heat lamination.
Embodiment 3: the preparation of energy absorber layer (2)
20g Masterblend 50 (SICPA-AARBERG AG company)
1g
Lazerflair 825 (granularity＜20 μ m) (Merck KgaA company)
10g ethyl acetate/ethanol (1:1)
With absorbent
Lazerflair 825 leniently introduces and is printed onto film thickness among the Masterblend 50 and in intaglio printing is 5-250 μ m, on the polyester film of preferred 23 μ m.Required viscosity can use solvent mixture ethyl acetate/ethanol to regulate.Coating weight is 0.5-1g/cm
2
Embodiment 4: contain the preparation of the carrier layer of energy absorber
By add the 300g granularity in polyester masterbatch (10kg) is Sn (Sb) O of＜1 μ m
2(DuPont company) is from comprising the polyester manufacture carrier layer of energy absorber.Prepared layer thickness is the film of 5-200 μ m subsequently.Depend on layer thickness, the film of making comprises the 0.05-10wt% energy absorber.
Embodiment 5: contain the preparation of the data plate medium (3) of polymer
20g ethyl acetate
The 2g NC Nitroncellulose
6g polypropylene powder (d
50＜50 μ m) (for example Coathylene PB0580, Du Pont company)
0.2g Cu phthalocyanine
NC Nitroncellulose is dissolved in the solvent ethyl acetate of initial introducing and fully and stirs.Add polypropylene powder and colouring agent copper phthalocyanine and prepare even paste to wherein stirring subsequently.
Use 90 μ m scrapers that paste is spread into film thickness as also dry on the polyester film of 5-250 μ m.
Embodiment 6: contain the preparation of the data plate medium (3) of polymer
20g ethyl acetate
The 2g NC Nitroncellulose
6g polypropylene powder (d
50＜50 μ m) (for example Coathylene PB0580, Du Pont company)
0.2g titanium oxide
Being similar to embodiment 5 processes.The colouring agent that uses is a titanium oxide.
Use 90 μ m scrapers that paste is spread into film thickness as also dry on the polyester film of 5-250 μ m.
Embodiment 7: contain the preparation of the data plate medium (3) of polymer
The 40g butyl acetate
12g polypropylene powder (d
50＜50 μ m)
The 4g NC Nitroncellulose
0.6g pigment-level carbon black (FW200, d
5013 μ m, Degussa company)
Being similar to embodiment 5 processes.The colouring agent that uses is the pigment-level carbon black.
Layer thickness with 225 μ m spreads on the polyester film that film thickness is 5-250 μ m paste and drying.
Embodiment 8: contain the preparation of the data plate medium (3) of polymer
40g MEK (MEK)
22g toluene
8.5g?PVC(T
g：40-89℃)
2.5g ethane-acetic acid ethyenyl ester terpolymer
The 20g colouring agent
6g high dispersion silicic acid
Being similar to embodiment 5 processes.The colouring agent that uses is, for example titanium oxide (Kronos2220,2222,2063S, 2090,2310, Kronos International, Inc. company) or Irgazin DPP red (Ciba Geigy company) or Sandoplast indigo plant (Clariant company).
Embodiment 9: contain the preparation of the data plate medium (3) of polymer
30g MEK (MEK)
The 30g acid butyl ester
The 25g cyclohexanone
10g PVC/PVA copolymer (85/15)
5g PVB (polyvinyl butyral resin)
The 10g colouring agent
Being similar to embodiment 5 processes.The colouring agent that uses is, for example pigment-level carbon black (FW-2, Degussa company, d
5013 μ m).
Embodiment 10: the preparation of multilayer data plate band
With carrier film-energy absorber layer (embodiment 1-4) and carrier film-data plate medium (embodiment 5-9) merging and laminated together by means of heat lamination equipment (model 647 of Erichson company).Heatable roller is adjusted to the temperature of 140-175 at this.After heat lamination, two films are engaged with each other securely.If use as the polypropylene screen of the coating of the PE among the embodiment 1 (P ü tz company
Film), then gummed can carry out under about 140 ℃.
Embodiment 11: the preparation of multilayer data plate band
The medium (embodiment 5-9) of will imprinting spreads into the layer thickness of 225 μ m that carrier film-energy absorber film (embodiment 1-4) is gone up and is dry.
Embodiment 12: the preparation of multilayer data plate band
According to Fig. 2, the data plate medium that will contain polymer is printed onto PET film (thickness: 5,12,15 in the data plate side with the layer thickness of 0.5-1.5 μ m, 19,23,25,36,50 μ m) on, and the layer thickness of energy absorber layer with 0.7-1.5 μ m be printed onto on the above-mentioned film in the laser side.
Embodiment 13: mark test and result
The carrier layer system (Fig. 1-4) that will contain absorber layer and data plate medium by means of following laser type is used for the permanent marker and the data plate of plastics:
A) Nd:YAG (cw operation)
12 watts of laser instrument Trumpf laser instruments
Nd-YAG (1064 and 532nm)
Laser instrument intensity: 10-90%, the cw operation
Speed: 100-1500mm/s
B) Nd:YVO
4Laser instrument (cw operation, pulse)
16 watts of laser instrument Rofin Sinar companies
Nd-YVO
4(1064nm)
Laser instrument intensity: 20-90%, cw operation, pulse
Pulse frequency: 10-100kHz
Speed: 400-2000mm/s
C) Nd:YAG laser instrument (pulse)
60 watts of laser instrument Baasel companies
Nd-YAG(1064nm)
Lamp current 16A, pulse operation
Pulse frequency: 20000Hz
Speed: 200mm/s
Swept frequency frequency generator: 16Hz
Pulse duration: 0.05ms
Compare with the mark that adopts the cw operation, adopt the salient point of pulse manipulated coloured data plate and mark to be
-higher marginal definition
-at the more smooth surface of mark position.
Claims (12)
1. the coloured data plate of permanent and wearability or the labeling method of plastics, it is characterized in that using coating systems, this coating systems by overlapping placement up and down and form by separated two layers of carrier film, wherein ground floor is by comprising inherently or forming as the plastics that layer form comprises energy absorber, be used as the data plate medium and comprise colouring agent and polymers compositions with the second layer that is applied on the carrier film, wherein under the effect at laser between data plate/mark phase, polymers compositions and frosting are welded.
2. according to the method for claim 1, it is characterized in that ground floor is made up of one or more carrier layer, and energy absorber on these carrier layer or between.
3. according to the method for claim 1 or 2, it is characterized in that energy absorber is selected from carbon, metal oxide, silicate, SiO
2Thin slice, with the mica of metal oxide-coated or with the SiO of metal oxide-coated
2The mixture of thin slice, conducting pigment, sulfide, phosphate, BiOCl, En, perylene, Rylene, pentaerythrite or aforementioned substances.
4. according to the method for claim 1 or 2, it is characterized in that plastic layer comprises the 0.01-20wt% energy absorber.
5. according to the method for claim 1 or 2, it is characterized in that imprinting medium basically by binding agent, colouring agent, polymers compositions and optional additive are formed.
6. according to the method for claim 5, it is characterized in that binding agent is selected from the mixture of cellulose, cellulose derivative, polyvinyl alcohol, PVP, polyacrylate, polymethacrylates, epoxy resin, polyester, polyethers, polyisobutene, polyamide, polyvinyl butyral resin and aforementioned substances.
7. according to the method for claim 1 or 2, the medium that it is characterized in that imprinting comprise quantity be 30-90wt% with dissolved form and/or with the polymers compositions of particulate forms.
8. according to the method for claim 1 or 2, it is characterized in that the granularity with the polymers compositions of particulate forms is 10nm-100 μ m.
9. according to the method for claim 1 or 2, it is characterized in that the copolymer of polymers compositions by polyester, Merlon, polyolefin, polystyrene, polyimides, polyamide, polyacetals and aforementioned polymer, and the terpolymer of vinyl chloride, dicarboxylic ester and vinyl acetate or hydroxy acrylate/methyl acrylate formation, or the mixture of aforementioned substances is formed.
10. according to the method for claim 1 or 2, the medium that it is characterized in that imprinting comprises organic and/or inorganic colourant.
11. according to the method for claim 1 or 2, the medium that it is characterized in that imprinting comprises the 0.1-30wt% colouring agent, based on the polymers compositions fraction.
12. according to the plastics of imprinting according to the method laser labelling or the laser of claim 1, it has coating systems, this coating systems by overlapping placement up and down and form by separated two layers of carrier film, wherein ground floor is by comprising inherently or forming and be applied to the second layer on the carrier film as the data plate medium and comprise colouring agent and polymers compositions as the plastics that layer form comprises energy absorber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10352857 | 2003-11-10 | ||
| DE10352857.1 | 2003-11-10 | ||
| DE102004026336.1 | 2004-05-26 |
Publications (2)
| Publication Number | Publication Date |
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| CN1894108A CN1894108A (en) | 2007-01-10 |
| CN100500448C true CN100500448C (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800371970A Expired - Fee Related CN100500448C (en) | 2003-11-10 | 2004-10-15 | Color laser marking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100500448C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4215817B1 (en) * | 2008-05-26 | 2009-01-28 | 日本カラリング株式会社 | Laser marking multilayer sheet for electronic passport and electronic passport |
| CN102307726B (en) * | 2009-02-04 | 2015-06-17 | 拜尔材料科学股份公司 | Layer structure and film for identification documents with improved laser etching |
| US9746380B2 (en) | 2011-09-30 | 2017-08-29 | Segan Industries, Inc. | Advanced multi-element consumable-disposable products |
| CN103433622A (en) * | 2013-08-22 | 2013-12-11 | 广西容县风采印业有限公司 | Method for using laser for marking plastic film |
| US10723160B2 (en) * | 2018-01-23 | 2020-07-28 | Ferro Corporation | Carbide, nitride and silicide enhancers for laser absorption |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1260752A (en) * | 1997-06-19 | 2000-07-19 | 默克专利股份有限公司 | Plastic which can be laser-marked |
| DE19942316A1 (en) * | 1999-09-04 | 2001-03-08 | Poesl Rudolf | Laser printing of a plastic substrate by heating a compound of plastic powder and glass pigments on the substrate with a laser beam |
-
2004
- 2004-10-15 CN CNB2004800371970A patent/CN100500448C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1260752A (en) * | 1997-06-19 | 2000-07-19 | 默克专利股份有限公司 | Plastic which can be laser-marked |
| DE19942316A1 (en) * | 1999-09-04 | 2001-03-08 | Poesl Rudolf | Laser printing of a plastic substrate by heating a compound of plastic powder and glass pigments on the substrate with a laser beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1894108A (en) | 2007-01-10 |
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