Patent EP0036680A1 successfully refreshed from Google Patents.
EP0036680A1
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Method of marking a synthetic material surface
Assignee: Koninklijke Philips NV
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Filing: 1981-02-25
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Granted: —
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Expires: 2001-02-25
Abstract
Abstract method of marking objects having a surface of a synthetic material and an object having the marked synthetic material for the purpose of identification which method comprises exposing the surface of the synthetic material to a laser beam of light of intensity of at least 1000 kW/cm' at the surface of the material and wherein the synthetic material contains a dye and a silicon-containing inorganic compound or a dye comprising silicon, such as, a sulphur containing sodium aluminium silicate which is decomposed to form a colour contrast mark on the surface on exposure to said laser beam.
Inventors
- 👤 Henricus Hubertus Marie Vorst
- 👤 Jozef Jeanne Jules Bastiaens
- 👤 Enno Coert Munk
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 21:47
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/267; B29; B29C; B29C59/00; B29C59/16; B44; B44B; B44B7/00; B23; B23K; B23K2101/00; B23K2101/007; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0838; B29K; B29K2105/00; B29K2105/06; B29K2105/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
62 words
A method of marking an object having a synthetic material surface, by exposing the surface to a laser beam, characterized in that the synthetic material surface comprises a dye and a silicon-containing inorganic compound, or a dye comprising silicon and that it is exposed to a laser beam having an intensity of at least 1000 kW/cm 2 , measured on the surface.
Claim 2
Independent Claim
62 words
A method of marking an object having a synthetic material surface, by exposing the surface to a laser beam, characterized in that the synthetic material surface comprises a dye and a silicon-containing inorganic compound, or a dye comprising silicon and that it is exposed to a laser beam having an intensity of at least 1000 kW/cm 2 , measured on the surface.
Claim 3
Dependent Claim
43 words
A method as claimed in Claim 1, characterized in that the synthetic material surface comprises a sulphur-containing sodium aluminium silicate dye and that it is exposed to a laser beam having an intensity of at least 1000 kW/cm , measured on the surface.
Claim 4
Dependent Claim
17 words
A method as claimed in Claim 2, characterized in that the synthetic material surface contains Ultramarine blue.
Claim 5
Independent Claim
43 words
A method as claimed in Claims 1-3, characterized in that the synthetic material surface is exposed through a mask and a converging lens to 1-5 pulses of a pulsed laser having a pulse duration of 0.1-4 microseconds and a frequency of 0.1-100 Hz.
Claim 6
Dependent Claim
17 words
An object having a synthetic material surface marked in accordance with the method claimed in Claims 1-4.
References Cited (Backward Citations)
US3448458A
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US3832212A
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FR2096342A5
Cited
FR2106492A1
Cited
FR2111201A5
Cited
US3760063A
Cited
FR2209853A1
Cited
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