EP0991523A1 - Lasermarkierbare kunststoffe - Google Patents
Lasermarkierbare kunststoffeInfo
- Publication number
- EP0991523A1 EP0991523A1 EP98929407A EP98929407A EP0991523A1 EP 0991523 A1 EP0991523 A1 EP 0991523A1 EP 98929407 A EP98929407 A EP 98929407A EP 98929407 A EP98929407 A EP 98929407A EP 0991523 A1 EP0991523 A1 EP 0991523A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laser
- markable
- plastic
- plastics according
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 74
- 239000004033 plastic Substances 0.000 title claims abstract description 74
- 229920000642 polymer Polymers 0.000 claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 19
- 239000006096 absorbing agent Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000000049 pigment Substances 0.000 claims description 28
- -1 polyethylene Polymers 0.000 claims description 19
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 9
- 239000004952 Polyamide Substances 0.000 claims description 8
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 8
- 229920002647 polyamide Polymers 0.000 claims description 8
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 239000004814 polyurethane Substances 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 229920006324 polyoxymethylene Polymers 0.000 claims description 7
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 229920000106 Liquid crystal polymer Polymers 0.000 claims description 4
- RAOSIAYCXKBGFE-UHFFFAOYSA-K [Cu+3].[O-]P([O-])([O-])=O Chemical compound [Cu+3].[O-]P([O-])([O-])=O RAOSIAYCXKBGFE-UHFFFAOYSA-K 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 2
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 229920002492 poly(sulfone) Polymers 0.000 claims description 2
- 229920001230 polyarylate Polymers 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 1
- 229910001960 metal nitrate Inorganic materials 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 229910052976 metal sulfide Inorganic materials 0.000 claims 1
- 238000013532 laser treatment Methods 0.000 abstract 1
- 238000002372 labelling Methods 0.000 description 11
- 238000010330 laser marking Methods 0.000 description 10
- 239000010949 copper Substances 0.000 description 8
- 239000000945 filler Substances 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000000654 additive Substances 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000004793 Polystyrene Substances 0.000 description 4
- 239000010445 mica Substances 0.000 description 4
- 229910052618 mica group Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 229920002959 polymer blend Polymers 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 229920001283 Polyalkylene terephthalate Polymers 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229920003825 Ultramid® B3K Polymers 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920012287 polyphenylene sulfone Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 150000003457 sulfones Chemical class 0.000 description 2
- 150000003568 thioethers Chemical class 0.000 description 2
- UICXTANXZJJIBC-UHFFFAOYSA-N 1-(1-hydroperoxycyclohexyl)peroxycyclohexan-1-ol Chemical compound C1CCCCC1(O)OOC1(OO)CCCCC1 UICXTANXZJJIBC-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229920004943 Delrin® Polymers 0.000 description 1
- 241000530268 Lycaena heteronea Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229920000426 Microplastic Polymers 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- OHMUBWQNHUTKMH-UHFFFAOYSA-L [OH-].[Cu+2].P(O)(O)(O)=O.[OH-] Chemical compound [OH-].[Cu+2].P(O)(O)(O)=O.[OH-] OHMUBWQNHUTKMH-UHFFFAOYSA-L 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- 229920001893 acrylonitrile styrene Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229910052626 biotite Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229940073609 bismuth oxychloride Drugs 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 description 1
- 229910052628 phlogopite Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920006260 polyaryletherketone Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/36—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties
- B41M5/366—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties using materials comprising a polymeric matrix containing a polymeric particulate material, e.g. hydrophobic heat coalescing particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/36—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/267—Marking of plastic artifacts, e.g. with laser
Definitions
- the present invention relates to laser-markable plastics which are distinguished in that a plastic which is difficult to laser-treat as an absorber material contains one or more intrinsically laser-markable polymers
- PA polymethyl methacrylate
- PMMA polymethyl methacrylate
- POM polyoxymethylene
- PUR polyurethane
- pearl luster pigments for laser marking is known from the article "Pearl Luster Pigments-Characteristics and Functional Effects" in Specialty Chemicals, May 1982, Vol. 2, No. 2. Pearlescent pigments have the disadvantage that they change the color of the plastic very much, which is often undesirable.
- EP 0 190 997 A describes laser-inscribable molding compositions, i.a. PE or PS, produced by adding at least one inorganic pigment to the high molecular weight organic material.
- the fillers known for laser marking either have the disadvantage that they permanently color the plastic to be labeled and consequently the laser lettering, which is usually dark lettering on a lighter background, then no longer has sufficient contrast, i.e. is readable, or that, such as. B. with kaolin, the marking is very weak and only becomes visible when the additive is used in high quantities.
- polymers that can be marked dark and with a high contrast using a laser without the addition of additives.
- polymers that can be marked dark and with a high contrast using a laser without the addition of additives.
- these include e.g. B. PET, butadiene styrene (ABS), polystyrene, polyphenyl ether (PPO), liquid crystal polymers (LCP), polyphenylene sulfide, polyarylates, polyaryl sulfides, polyaryl sulfones, polyaryl ether ketones and their blends.
- the object of the present invention was therefore to find laser-markable plastics which, under the action of laser light, enable laser marking with high contrast.
- the filler or the successful absorption medium should have a very light, neutral natural color or the properties of the pre-colored plastic to be marked or should have little or no influence on it.
- the invention therefore relates to laser-markable plastics, characterized in that plastics which are difficult to lasers contain one or more intrinsically markable polymers with a particle size of 0.1 to 100 ⁇ m.
- intrinsically markable polymers as absorbers in concentrations of 0.1 to 10% by weight, preferably 0.1 to 5% by weight, and in particular 0.1 to 2% by weight, based on the plastic system, a high contrast is achieved with laser marking.
- concentration of the intrinsically markable polymers in the plastic depends on the plastic system and the laser used.
- Suitable polymers or polymer mixtures are all known, easily laserable plastics, such as, for. B. PET, ABS, polystyrene, PPO, polyphenylene sulfide, polyphenylene sulfone, polyimide sulfone, LCPs.
- Micro-ground thermoplastics with a very high melting range of> 300 ° C are particularly suitable.
- the edge sharpness of the marking is determined in particular by the particle size of the micro-milled polymers.
- the polymers preferably have particle sizes in the range from 0.1 to 50 ⁇ m, in particular from 1 to 20 ⁇ m.
- the marking result is positively influenced if the intrinsically markable polymer as a further absorber is a light-sensitive pigment, such as. B. contains a filler, a conductive pigment and / or an effect pigment. By adding another absorber, the contrast is increased depending on the plastic system used.
- the amount of light-sensitive pigment added should be between 0.1 and 90%.
- Particularly suitable light-sensitive pigments are fillers, such as. B. Ti0 2 and Si0 2 , and layered silicates.
- light or white mica can be used as the silicate plate.
- other natural mica such as phlogopite and biotite, synthetic mica, talc and glass flakes can also be used.
- Effect pigment is to be understood as all known gloss, metal and pearlescent pigments, such as those used for. B. are distributed by the companies Mearl, Eckart-Werke and Merck KGaA.
- Suitable conductive pigments are e.g. As those sold under the trade name Minatec ® pigments from. Merck KGaA.
- platelet-shaped Ti0 2 / mica pigments that contain an outer layer of tin / antimony oxide as a conductive layer.
- Suitable oxides, hydroxides, sulfides, sulfates and phosphates of metals, such as, for example, are suitable as light-sensitive pigments.
- Copper phosphates are 6 CuO P 2 0 5 3 H 2 0, Cu 3 (P0 4 ) 2 3 Cu (OH) 2 , 5 CuO P 2 0 5 3 H 2 0, Cu 3 (P0 4 ) 2 2 Cu ( OH) 2 H 2 0, 4 CuO P 2 0 5 , 4 CuO P 2 0 5 3H 2 0, 4 CuO P 2 0 5 1, 5 H 2 0, 4 CuO P 2 0 5 1, 2 H 2 0.
- Combination with the micro-milled polymers should not exceed a total of 10% by weight based on the plastic system.
- the plastic preferably contains 0-5% by weight of light-sensitive pigments, in particular 0-1% by weight.
- the mixing ratio of the light-sensitive pigments with the micro-milled polymers is not subject to any restrictions.
- color pigments can be added to the hard-to-laser plastic, which allow color variations of any kind and at the same time ensure that the laser marking is retained.
- the light-sensitive pigments and / or color pigments are preferably added together with the polymers, but in principle the separate addition is also possible. A mixture of different light-sensitive pigments can also be added to the plastic.
- High-energy radiation is preferably used for the marking, in general in the wavelength range from 150 nm to 10600 nm, in particular in the range from 150 nm to 1100 nm.
- CO 2 lasers 10600 nm
- Nd YAG lasers (1064 nm or 532 nm) or pulsed UV laser (excimer laser) mentioned.
- Nd: YAG lasers (1064 nm or 532 nm) and CO 2 lasers (10600 nm) are particularly preferably used.
- the energy densities of the lasers used are generally in the range from 0.3 mJ / cm 2 to 50 J / cm 2 , preferably in the range from 0.3 mJ / cm 2 to 10 J / cm 2 .
- plastics that are difficult to laser-mark can be used for the laser marking by adding the polymers according to the invention.
- plastics are e.g. Thermosets, polyethylene (PE-HD, PE-LD, PE-LLD),
- polyolefins, polyurethanes, polyoxymethylenes and polyamides are suitable for doping with the polymers according to the invention on account of their mechanical properties, the inexpensive processing methods and their poor laser markability.
- the micro-ground polymer is incorporated into the plastic by the processes known for pigments and fillers.
- the pigmented plastic is then deformed under the influence of heat.
- the particle structure is retained after incorporation, ie the particles should not be soluble in the melt or melt with them. This is achieved by matching the melting ranges of the plastic system with that of the micro-milled polymer.
- Adhesives, organic polymer-compatible solvents, stabilizers, optical brighteners, color pigments, dyes, fillers, reinforcing materials, flame retardants, antistatic agents and / or surfactants which are stable under the working conditions can optionally be added to the plastic granules when the micromilled polymer is incorporated.
- other additives not mentioned here, can be added to the plastic. However, the presence of other additives in the existing plastic system can have an impact on the marking result.
- the plastic granulate / polymer mixture is generally prepared by introducing the plastic granulate into a suitable mixer, wetting it with any additives, and then adding and mixing in the micromilled polymers.
- the mixture obtained in this way can then be processed directly in an extruder or an injection molding machine.
- the moldings formed during processing usually show a very homogeneous distribution of the polymers or the polymer mixture.
- the laser marking takes place, preferably using an Nd: YAG laser.
- Labeling with the laser is carried out in such a way that the sample body enters the beam path of a pulsed laser, preferably an Nd: YAG
- Lasers is brought. Labeling with a C0 2 - or an excimer laser is also possible. However, the desired results can also be achieved with other types of lasers which have a wavelength in a region of high absorption of the intrinsically marking polymer.
- the hue obtained and the depth of color are determined by the laser parameters, such as the irradiation time and irradiation power.
- the power of the laser used depends on the respective application and can be determined easily by a specialist in individual cases.
- the plastic doped according to the invention can be used in all fields where previously customary printing processes have been used for labeling plastics. For example, moldings made from the plastic according to the invention can be used in the electrical, electronics and motor vehicle industries.
- Labeling of e.g. Housings, lines, key caps, trim strips or functional parts in the heating, ventilation and cooling area or switches, plugs, levers and handles, which consist of the plastic according to the invention, can be made even in hard-to-reach places with the aid of laser light.
- the plastic system according to the invention can be used in packaging in the food sector or in the toy sector.
- the markings on the packaging are characterized by the fact that they are smudge-proof and scratch-resistant, stable during subsequent sterilization processes, and can be applied hygienically during the marking process. Complete label images can be permanently applied to the packaging for a reusable system.
- Another important area of application for laser marking is identification cards and plastic tags for individual identification of animals, so-called cattle tags or ear tags. The laser marking of plastic objects or moldings which consist of the plastic according to the invention is thus possible.
- the components are physically mixed and homogenized using an injection molding machine and formed into platelets.
- the labeling with a Nd: YAG laser at 532 and 1064 nm wavelengths shows a black, high-contrast marking with a smooth surface over a wide setting range.
- the components are mixed and homogenized using an injection molding machine and formed into platelets. Labeling with a Nd: YAG laser shows a black, high-contrast marking with a smooth surface over a wide setting range.
- the components are mixed and homogenized using an injection molding machine and formed into platelets.
- Nd.YAG laser shows a deep black high-contrast marking with a smooth surface over a wide setting range.
- the components are mixed and homogenized using an injection molding machine and formed into platelets. Labeling with a Nd: YAG laser shows a black, high-contrast marking with a smooth surface over a wide setting range.
- the components are mixed and homogenized using an injection molding machine and formed into platelets. Labeling with a Nd: YAG laser shows a black, high-contrast marking with a smooth surface over a wide setting range.
- the polyphenylene sulfide is stirred homogeneously into the liquid polyester casting resin. After adding the accelerator (co-octoate) and hardener (cyclohexanone peroxide), the mixture is poured into a mold. After curing, a molded part is obtained which can be marked black and with high contrast using the Nd: YAG laser.
- accelerator co-octoate
- hardener cyclohexanone peroxide
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19726136 | 1997-06-19 | ||
| DE19726136A DE19726136A1 (de) | 1997-06-19 | 1997-06-19 | Lasermarkierbare Kunststoffe |
| PCT/EP1998/003250 WO1998058805A1 (de) | 1997-06-19 | 1998-05-30 | Lasermarkierbare kunststoffe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0991523A1 true EP0991523A1 (de) | 2000-04-12 |
| EP0991523B1 EP0991523B1 (de) | 2002-10-16 |
Family
ID=7833076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98929407A Expired - Lifetime EP0991523B1 (de) | 1997-06-19 | 1998-05-30 | Lasermarkierbare kunststoffe |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0991523B1 (de) |
| JP (1) | JP2002504947A (de) |
| KR (1) | KR20010013893A (de) |
| CN (1) | CN1169677C (de) |
| AU (1) | AU7917898A (de) |
| BR (1) | BR9810065A (de) |
| CA (1) | CA2294235A1 (de) |
| DE (3) | DE19726136A1 (de) |
| ES (1) | ES2183381T3 (de) |
| TW (1) | TW589339B (de) |
| WO (1) | WO1998058805A1 (de) |
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|---|---|---|---|---|
| EP1905585A1 (de) * | 2006-09-27 | 2008-04-02 | Mitsubishi Polyester Film GmbH | Laser-markierbare Folie |
| DE102011088564A1 (de) | 2011-12-14 | 2013-06-20 | Robert Bosch Gmbh | Verfahren zur Herstellung eines beschrifteten Batteriezellengehäuses |
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| DE10118178C2 (de) * | 2001-04-11 | 2003-05-08 | Draexlmaier Lisa Gmbh | Verbundzierteil und Verfahren zu seiner Herstellung |
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| ATE353092T1 (de) * | 2002-12-04 | 2007-02-15 | Dsm Ip Assets Bv | Laserlicht absorbierendes additiv |
| EP1431050A3 (de) * | 2002-12-19 | 2004-11-03 | MERCK PATENT GmbH | Lasermarkierungsverfahren eines Flüssigkristallfilms |
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| DK1790701T4 (da) | 2005-11-25 | 2012-04-02 | Sicpa Holding Sa | IR-absorberende dybtryksfarve |
| DE102006005089B4 (de) * | 2006-02-04 | 2015-04-16 | Preh Gmbh | Bedienelement |
| DE102006038043A1 (de) | 2006-08-14 | 2008-02-21 | Chemische Fabrik Budenheim Kg | Laserbeschriftbares Polymermaterial |
| DE102006062269A1 (de) | 2006-12-22 | 2008-06-26 | Eckart Gmbh & Co. Kg | Verwendung von sphärischen Metallpartikeln als Lasermarkierungs- oder Laserschweißbarkeitsmittel sowie lasermarkierbarer und/oder laserschweißbarer Kunststoff |
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| DE102007050363A1 (de) * | 2007-10-15 | 2009-04-16 | Forschungsinstitut für Pigmente und Lacke e.V. | Verfahren zur Lasermarkierung eines Polymermaterials |
| EP2065165B1 (de) | 2007-11-30 | 2009-11-04 | Eckart GmbH | Verwendung einer Mischung mit sphärischen Metallpartikeln und Metallflakes als Lasermarkierungs- oder Laserschweissbarkeitsmittel sowie lasermarkierbarer und/oder laserschweissbarer Kunststoff |
| DE102008005862A1 (de) | 2008-01-15 | 2009-07-16 | IKT Institut für Kunststofftechnik | Lasermarkierbarer Polymerwerkstoff und Verfahren zu seiner Herstellung |
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| DE102008034022A1 (de) | 2008-07-16 | 2010-01-21 | Merck Patent Gmbh | Verfahren zur Herstellung eines Sicherheits- und/oder Wertprodukts mit Teilbereichen mit unterschiedlicher Lumineszenzemission |
| DE102009001335A1 (de) * | 2009-03-04 | 2010-09-09 | Chemische Fabrik Budenheim Kg | Strahlung absorbierendes Material |
| CN101927626B (zh) * | 2009-06-18 | 2013-08-07 | 河南天海电器有限公司 | 一种塑料激光打标功能母料 |
| CN103247462B (zh) * | 2012-02-08 | 2015-06-24 | 联想(北京)有限公司 | 键帽及其制造方法、具有该键帽的键盘、笔记本电脑 |
| DE102013100252A1 (de) | 2013-01-11 | 2014-07-17 | Kuraray Europe Gmbh | Verwendung von additivierten Polyvinylacetalen als Lasermarkierungsmittel für schwer lasermarkierbare Kunststoffe |
| DE102014008962A1 (de) * | 2014-06-23 | 2016-01-07 | Merck Patent Gmbh | Mikrokugeln |
| DE102016210160A1 (de) | 2016-06-08 | 2017-12-14 | Weilburger Coatings Gmbh | Wässrige Zusammensetzung zur Erzeugung einer lasermarkierbaren Beschichtung und lasermarkierte Beschichtung |
| DE102016219858A1 (de) | 2016-10-12 | 2018-04-12 | Weilburger Coatings Gmbh | Verfahren zur Herstellung einer Beschichtung mit Markierungen auf einer Oberfläche oder einem Teil einer Oberfläche eines Gegenstandes |
| TWI666670B (zh) * | 2018-05-18 | 2019-07-21 | 致伸科技股份有限公司 | 鍵帽結構及其製造方法 |
| CN110628112A (zh) * | 2019-09-28 | 2019-12-31 | 珠海市恒誉科技有限公司 | 一种聚合物局部诱发变黑助剂及制备方法 |
| US11584086B2 (en) * | 2019-12-20 | 2023-02-21 | Xerox Corporation | Particles comprising marking additives for selective laser sintering-based manufacturing systems |
| US20230064853A1 (en) * | 2020-01-28 | 2023-03-02 | Air Water Mach Inc. | Fluorine-containing elastomer composition and sealing material |
| CN119790097A (zh) | 2022-07-26 | 2025-04-08 | 默克专利股份有限公司 | 用于激光标记的聚合物组合物 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8825860D0 (en) * | 1988-11-04 | 1988-12-07 | Bicc Plc | Fluorocarbon polymer compositions & electric cables |
| DE4416129A1 (de) * | 1994-05-06 | 1995-11-09 | Basf Ag | Thermoplastische Formmassen mit guter Beschriftbarkeit |
-
1997
- 1997-06-19 DE DE19726136A patent/DE19726136A1/de not_active Withdrawn
-
1998
- 1998-05-30 BR BR9810065-3A patent/BR9810065A/pt unknown
- 1998-05-30 KR KR1019997011915A patent/KR20010013893A/ko not_active Ceased
- 1998-05-30 CN CNB988062437A patent/CN1169677C/zh not_active Expired - Fee Related
- 1998-05-30 DE DE59805984T patent/DE59805984D1/de not_active Expired - Fee Related
- 1998-05-30 DE DE19880779T patent/DE19880779D2/de not_active Expired - Fee Related
- 1998-05-30 WO PCT/EP1998/003250 patent/WO1998058805A1/de not_active Ceased
- 1998-05-30 ES ES98929407T patent/ES2183381T3/es not_active Expired - Lifetime
- 1998-05-30 AU AU79178/98A patent/AU7917898A/en not_active Abandoned
- 1998-05-30 CA CA002294235A patent/CA2294235A1/en not_active Abandoned
- 1998-05-30 JP JP50364999A patent/JP2002504947A/ja active Pending
- 1998-05-30 EP EP98929407A patent/EP0991523B1/de not_active Expired - Lifetime
- 1998-06-16 TW TW087109560A patent/TW589339B/zh not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9858805A1 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1905585A1 (de) * | 2006-09-27 | 2008-04-02 | Mitsubishi Polyester Film GmbH | Laser-markierbare Folie |
| US7541088B2 (en) | 2006-09-27 | 2009-06-02 | Mitsubishi Polyester Film Gmbh | Laser-markable film |
| US8691493B2 (en) | 2009-07-17 | 2014-04-08 | Leonhard Kurz & Stiftung & Co. KG | Method for the production of a multilayer element, and multilayer element |
| DE102011088564A1 (de) | 2011-12-14 | 2013-06-20 | Robert Bosch Gmbh | Verfahren zur Herstellung eines beschrifteten Batteriezellengehäuses |
| WO2013087344A1 (de) | 2011-12-14 | 2013-06-20 | Robert Bosch Gmbh | Verfahren zur herstellung eines beschrifteten batteriezellengehäuses |
Also Published As
| Publication number | Publication date |
|---|---|
| TW589339B (en) | 2004-06-01 |
| JP2002504947A (ja) | 2002-02-12 |
| CA2294235A1 (en) | 1998-12-30 |
| KR20010013893A (ko) | 2001-02-26 |
| AU7917898A (en) | 1999-01-04 |
| DE19726136A1 (de) | 1998-12-24 |
| WO1998058805A1 (de) | 1998-12-30 |
| EP0991523B1 (de) | 2002-10-16 |
| ES2183381T3 (es) | 2003-03-16 |
| BR9810065A (pt) | 2000-09-19 |
| CN1260752A (zh) | 2000-07-19 |
| CN1169677C (zh) | 2004-10-06 |
| DE59805984D1 (de) | 2002-11-21 |
| DE19880779D2 (de) | 2000-09-07 |
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