GB2221421A - Taking impressions of microstructures - Google Patents
Taking impressions of microstructures Download PDFInfo
- Publication number
- GB2221421A GB2221421A GB8915596A GB8915596A GB2221421A GB 2221421 A GB2221421 A GB 2221421A GB 8915596 A GB8915596 A GB 8915596A GB 8915596 A GB8915596 A GB 8915596A GB 2221421 A GB2221421 A GB 2221421A
- Authority
- GB
- United Kingdom
- Prior art keywords
- soluble film
- impression
- layer
- impression body
- film
- 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
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- 239000000126 substance Substances 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 28
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 25
- 230000003287 optical effect Effects 0.000 claims description 17
- 239000002904 solvent Substances 0.000 claims description 17
- 239000003973 paint Substances 0.000 claims description 11
- 229920002284 Cellulose triacetate Polymers 0.000 claims description 10
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 claims description 10
- 238000007710 freezing Methods 0.000 claims description 6
- 230000008014 freezing Effects 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000004544 sputter deposition Methods 0.000 claims description 5
- 230000008961 swelling Effects 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 238000010422 painting Methods 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims 2
- 239000002826 coolant Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000007791 liquid phase Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 43
- 229940022682 acetone Drugs 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000007431 microscopic evaluation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910002710 Au-Pd Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/02—Chemical treatment or coating of shaped articles made of macromolecular substances with solvents, e.g. swelling agents
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/08—Cellulose derivatives
- C08J2301/10—Esters of organic acids
- C08J2301/12—Cellulose acetate
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Description
- e'. A -4 r', 22 14 t IMPRESSION SUBSTANCE AND METHOD OF TAKING
IMPRESSIONS TO DEPICT MICROSTRUCTURE -------------- ------ The invention relates to an impression substance for depicting microstructures and comprising a copy layer and, above it, a contrast- enhancing optical layer, and also to a met-hod of producing such a substance.
Known from the publication "Metallographische und fraktographische Untersuchung an Bauteilen" ("Metallographic and Fractographic Examination of Components"), VGB Kraftwerkstechnik 62, No. 6, June 1982, pp. 519 to 524, are polyvinyl acetates solutions with chlorinated hydrocarbons which can be applied as soluble film to microstructured fractions and reinforced with a casting resin, the use of chlorinated hydrocarbons being known to be disadvantageous in that they are environmentally harmful and can damage health. With this soluble film, resolutions down to 1 lim can be achieved. The same publication discloses sandwich impressures which consist of a film which serves as the copy layer "of a supporting and reflecting of aluminium situated underneath it" and an adhesive film for direct application to an object carrier.
As can be ascertained from the same publication, such films are about 100 pm thick and can be used with edge lengths of a few centimetres.
Such film impressions as are known from DIN 54150 Section 3.2 have the disadvantage that large area impressions of several square decimetres are unfortunately impaired by considerable faults such as air bubble inclusions and arching.
A bubble free method according to DIN 54150 Section 3.1 involves using a single-layer paint impression on a nitrocellulose or synthetic resin base. In contrast to an impression film, such pair impressions are not residuefree when lifted off large surfaces which have to be copied, so that unfortunately considerable error sites and error structures occur in the copy layer. Large area impressions are furthermore neither easily handled nor can they be pulled off without damage.
In addition to foil and paint impressions of microstructures, casting methods are known. It is true that mechanically stable impression substances can be produced by these methods but they are not free from bubble inclusions and unfortunately exhibit an inherent microscopic structure which renders microscopic evaluation difficult. Castings of large curved surface areas unfortunately do not produce plane preparations for microscopic evaluation.
One object of this invention is to provide an impression substance for the depicting of microstructures, which comprises a copy layer and above it a contrast-enhancing optical layer which is mechanically stable so that large area surfaces with microstructures, particularly of microstructured large area data carriers and micro-fissured mechanically loaded large area components can be copied without bubbles and without arching, the impression substance being cap.able of being lifted off the surface to be copied, without leaving a residue, and also to provide a method of producing such impression substances which in particular avoids the use of environmentally harmful and health-damaging solvents such as for example chlorinated hydrocarbons.
According to the invention, we propose an impression substance which comprises a copy layer and above it a contrast-enhancing optical layer, the copy layer being a dried soluble film of homogeneously disposed cellulose triacetate with a thickness of 1 to 15 pm and which is.rigidly connected to a supporting head.
The disadvantages encountered in the state of the art are overcome by the impression substance according to the invention.
The invention advantageously reaches both the satisfactory copying, resolution and impression properties of a film as well as the bubble and arching-free nature of the impression paints in that a film material according to the characterising features of procedural claim 1 is prepared to produce a soluble film and dries to a thickness of 1 to 15 pm on the surface which is to be copied and which has microstructures, to produce a copy layer.
A particularly advantageous soluble film comprises cellulose triacetate which is homogeneously distributed in the solvent acetone and with which a resolution capacity of less than 0.5 pm is achieved.
The surface of-the copy layer is covered by a contrast-enhancing optical layer of 0.01 to 0.3 jum thickness and consisting of chromium, palladium, aluminium, gold, tantalum, platinum, nickel, tungsten, carbon and/or alloys thereof, or by a plurality of layers of these substances. The thin bubble and arching- free copy layer forms together with the supporting substance a reinforced self-supporting impression blank. The plate, disc, or roll-like supporting substance advantageously consists of duroplastic materials such as epoxy resin or fibre-reinforced duroplastic materials with textile, glass or carbon fibres.
In a particularly advantageous embodiment, the support substance is layered and flexible and comprises a supporting paint which is additionally applied to the underside of the copy layer. It can be one of the known impression paints. This embodiment is particularly suitable for the impression of spheroidal, conical or cylindrically-shaped inner surfaces of hollow shapes.
For microanalyses of a plane, conical or cylindrical surface, the resilient impression blank of dried soluble film and supporting pair is strengthened by a double adhesive synthetic plastics strip and is connected to a plane carrier plate so that a multi-layer supporting substance is created. The thickness of the single or multi-layer supporting 25 substance is advantageously 0.06 mm to 10 mm. Also, according to the invention, we propose a method of producing an impression substance according to the invention for depicting microstructures, comprising the steps of:
a) swelling a film material in a solvent, b) forming a soluble film by homogenising the film material, using a freezing stage, c) applying the soluble film to a surface to be copied, with the microstructure, d) drying the soluble film to produce a copy layer on the surface to be copied, with the microstructure, e) forming an impression blank by reinforcing the copy layer on the surface which is to be copied by the application of a supporting substance, f) removing the impression blank from the surface with the microstructure, and g) applying an optical layer to the microstructure of the impression blank.
With this method, it is advantageously possible to produce from copiable microstructured surfaces individual or any desired number of impressions of reproducible quality, without the microstructure of the surface being falsified by paint residues. Particular difficulties in forming an impression substance with a copy layer of film material are presented by the completely homogeneous dissolution of the compact film material in a solvent which does not contain any chlorinated hydrocarbons. Indeed, it is well known that cellulose triacetate as a film material is superficially partially dissolved by acetone and enjoys a certain degree of swelling. But even after the conventional boiling stages, at the boiling point of the solvent, the solution is inhomogeneously streaked and is useless as a soluble film. By freeze-cooling the batch of solvent it is possible to form an homogeneous soluble film. In preparation for the 5 freezing stage, the film material is caused to swell in a solvent at temperatures between room temperature and the boiling point of the solvent. In the preferred combination of substances of acetone and cellulose triacetate, temperatures of between 2800K and 3200K have proved suitable. At these temperatures the cellulose triacetate is brought to swelling point in 0.5 to 3 hours.
To this end, a mixture of 20 1 to 200 1 solvent per 1 kg of film material is used. Preferably, also concentrates of the soluble film can be produced at the rate of 10 1 of solvent to 1kg of film material.
After swelling,the mixture is cooled to a temperature below the freezing point of the solvent. For the preferred combination of acetone and cellulose triacetate, temperatures between 750K and 1750K have been found to be ideal. Subsequently, the solution is agitated while being heated to room temperature to produce a soluble film with homogeneously dispersed film material in the solvent.
If a concentrate of the soluble film is produced with the freezing stage, then prior to its use, it is diluted to produce a soluble film.
The soluble film can be applied in bubble-free manner to surfaces to be copied, with a microstructure, by spraying, painting or splashing and will dry to produce a copy layer 1 to 15 pm thick.
In the case of the preferred combination (of acetone and cellulose triacetate), drying is carried out at temperatures between 2801K and 3250K and depending upon the thickness of the copy layer, will take 1 to 30 seconds.
After drying and before the copy layer is lifted off, it is strengthened with a supporting substance comprising a reinforcing paint or a duroplastic material or a fibre-reinforced duroplastic material, to produce an impression blank.
The form and choice of materials for the supporting substance will be goverened by the surface to be copied.
In the case of surfaces of data carriers with microstructures, for instance plate-like, disc-like or roll-like supporting substances are possible. Form stability and rigidity are in this case achieved by duroplastic of fibre-reinforced duroplastic substances.
For fault analysis of stressed components with a complicated (for instance plane, conical, or cylindrical) surface, an elastic layer-like impression blank is desirable and can be formed by spraying, spatula application or the splashing of additional supporting paints onto the copylayer and after being lifted off the surface, is applied to a carrier panel with a double-adhesive strip of synthetic plastics material.
The supporting substance is applied to the copy layer by painting, spraying, spatula, rolling, pouring, pressing or by injection moulding.
The impression body is then formed for example, by sputtering, vacuum evaporation or chemical deposition of a contrast-enhancing optical layer of 0.01 to 0.3 um thickness on the blank. Layer thickness and material are goverened by the optical requirements of the optical scanning system for the microstructured copied surface such as for example a laser scanner, scanning electron microscope or light microscope. By way of example, some suitable materials for the optical layer and their method of application are listed in Table 1.
Organic or inorganic transparent layers such as for example silicon dioxide, indium oxide, tantalum oxide or acrylic glass can be applied to the impression body for example by dipping, splashing, evaporation, sputtering or-deposition in order to form a lasting or a temporary protection.
It is also possible to achieve bilateral application of copy layers with microstructures to a disc or plate-like supporting substance. For this purpose, two surfaces with microstructures are provided with a copy layer and are rigidly connected to a common supporting substance.
Embodiments of the invention will now be described by way of example with reference to the accompanying drawings, in which:
Figure 1 is a schematic representation of an impression body with images of negative microstructures; Figure 2 is a schematic representation of another t -g- impression body with a double sided copy layer of surfaces with positive (raised) microstructures; and Figure 3 is a schematic representation of an impression body with an image of complex microstructures.
Figure 1 shows a diagrammatic cross-section through an impression body with an optical layer (1), a copy layer (2) and a supporting substance (3) of for example epoxy resin. To this end, a soluble film of acet-one and homogeneously dispersed cellulose acetone was applied by spraying a surface having negative microstructures such as occur in the case of micro-fissure formation and etching processes. After the soluble film has dried to a copy layer (2), an epoxy resin supporting substance (3) is poured on. After the impression blank (8) comprising the copy layer (2) and supporting substance (3) has been lifted off, the surface of the impression blank (8) is evaporated with gold.
Figure 2 shows a diagrammatic cross-section through an impression body with a double-sided copy layer (2) such as is advantageously used for mass production of microstructured data carriers. To this end, two disclike plates with positive (raised) microstructures on their surfaces were coated with soluble film and after drying were pressed onto a fibre-reiriforced synthetic plastics disc which served as a supporting body (3) and the surface 257of which had not hardened out. After the disc-like plates with microstructures had been lifted off, the impression blank was hardened and provided on both sides with a contrastenhancing optical layer (1) of aluminium after which the 1 the disc-like impression substance was protected with coating of acrylic glass as a transparent protective coating (4) applied to both sides by a dipping process.
Figure 3 shows a diagrammatic cross-section through an impression substance with an image of complex microstructures such as may occur in the case of complicated surfaces of highly stressed components. Here, the copy layer (2) was thickened with a coating of flexible reinforcing paint (5) and was lifted by a double-adhesive synthetic plastic strip (6) off the surface with complex microstructures and applied to a flat carrier plate (7). Reinforcing paint (5), double- adhesive synthetic plastic strip (6) and carrier plate (.7) in this case constitute a multi-layer supporting substance (3). A contrastenhancing optical layer (1) of nickel is applied by sputtering to the impression blank consisting of copy layer and supporting substance (3).
TABLE 1
Materials and method of application for a contra.,--t- enhancing optical layer 0.01 to 0.3 jim thick Material Method of application Sputtering Evaporation W + + Al + + Ni + Au + Au-Pd + Ta + Pt + Cr + c + + = suitable or highly suitable method of application = unsuitable or less suitable method of application.
Claims (20)
1. An impression body for depicting microstructures and comprising a copy layer and, above it, a contrast-enhancing optical layer, wherein the.copy layer (2) is a dried soluble film of-homogeneously dispersed cellulose triacetate 1 to 15 pm thick and rigidly connected to a supporting substance (3).
2. An impression body according to claim 1, wherein the optical layer (1) is 0.01 to 0.
3 um thick. 3. An impression body according to claim 1 or claim 2, wherein the soluble film comprises acetone with homogeneously dispersed cellulose triacetate.
4. An impression body according to any one of claims 1 to 3, wherein the supporting substance (3) is plate-like, disc- like or roll-like and comprises a duroplastic or fibre-reinforced duroplastic material.
5. An impression body according to any one of claims 1 to 3, wherein the supporting substance (3) is layered and comprises a backing paint.
6. An impression body according to any one of claims 1 to 5, wherein the supporting substance (3) is 0.02 to 10 mm thick.
7. An- impression body according to any one of claims 1 to 6, wherein the supporting substance (3) comprises a supporting layer (5), a double- adhesive synthetic plastics strip (6) and a carrier plate (7).
8. A method of producing an impression body for depicting microstructures comprising the steps:
e) f) a) swelling a film material in a solvent, b) forming a soluble film by homogenising the film material, c) applying the soluble film to the surface which is to be copied, with the microstructure, d) drying the soluble film to produce a copy layer on the surface, reinforcing the copy layer on the surface by the application of a supporting substance, to form an impression blank, applying an optical layer to the microstructure of the impression blank.
9. A method according to claim 8, wherein the solvent is acetone and the film material is cellulose triacetate.
10. A method according to claim 8 or claim 9 wherein the film material is caused to swell in a solvent at 2800K to 3250K for 0.5 to 3 hours accompanied by agitation.
11. A method according to any one of claims 8 to 10, wherein to form the soluble film, the swollen film material is cooled to temperatures of between 770K and 1750K followed by heating accompanied by agitation of the liquid phase up to 2800K.
12. A method according to any one of claims 8 to 11, wherein formation of the soluble film comprises a freezing stage carried out with an evaporating coolant having a boiling point of between 700K and 900K.
13. A method according to any one of claims 8 to 12, wherein the soluble film contains 1 kg of film material to 20 to 200 1 of solvent.
14. A method according to any one of claims 8 to 13, wherein initially a concentrate of soluble film is homogenised with 10 1 of solvent to 1 kg of film material by the freezing stage, this concentrate being diluted prior to the soluble film being used as a copy layer.
15. A method according to any one of claim 8 to 14, wherein the soluble film is applied by painting, spraying or splashing.
16. A method according to any one of claims 8 to 15, wherein after being applied at temperatures of between 2800K and 3200K, the soluble film is dried for 1 to 30 seconds.
17. A method according to any one of claims 8 to 16, wherein the supporting substance is applied by painting, spraying, spatula, rolling, pouring, pressing or by injection moulding.
18. A method according to any one of claims 8 to 17, wherein a contrastenhancing optical layer of a thickness of 0.01 jam to 0.3 pm is applied by sputtering, evaporation or by chemical disposition.
19. An impression body constructed and arranged substantially as hereinbefore described with reference to and.as illustrated in any one or all of Figures 1 to 3 of the accompanying drawings.
20. A method of producing an impression body substantially as hereinbefore described with reference to any one or all of Figures 1 to 3 of the accompanying drawings.
Published 1990 at The PatentOffice. State House. 66 71IijghHolborn, London WC1R4TP.Purther copies maybe obtainedfrom The PatentOffice. Sales Branch. St Mary Cray. Orpington. Kent BR5 3R11 Printed by Multiplex techniques ltd. St Mary Cray. Kent, Con. 1W
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3823905A DE3823905C1 (en) | 1988-07-14 | 1988-07-14 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8915596D0 GB8915596D0 (en) | 1989-08-23 |
| GB2221421A true GB2221421A (en) | 1990-02-07 |
| GB2221421B GB2221421B (en) | 1992-10-07 |
Family
ID=6358680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8915596A Expired GB2221421B (en) | 1988-07-14 | 1989-07-07 | Impression substance and method of taking impressions to depict microstructure |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE3823905C1 (en) |
| FR (1) | FR2635725B1 (en) |
| GB (1) | GB2221421B (en) |
| IT (1) | IT1230045B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0723986A1 (en) * | 1995-01-19 | 1996-07-31 | Fuji Photo Film Co., Ltd. | Process for the preparation of cellulose acetate film |
| EP0723993A1 (en) * | 1995-01-19 | 1996-07-31 | Fuji Photo Film Co., Ltd. | Cellulose acetate solution and process for the preparation of the same |
| EP0779321A2 (en) * | 1995-12-05 | 1997-06-18 | Fuji Photo Film Co., Ltd. | Process and apparatus for the preparation of polymer solution |
| CN1448257B (en) * | 2002-03-29 | 2010-04-28 | 富士胶片株式会社 | Cool-dissolving apparatus and preparation method for polymer solution and products thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19613383C1 (en) * | 1996-04-03 | 1997-08-28 | Flohr Schmitt Evelyn | Security hologram die made of plastic hardening while retaining flexibility |
| RU2082993C1 (en) * | 1996-05-14 | 1997-06-27 | Коммерческий Банк "Альба Альянс" | Process for manufacturing microrelief on surface of metals (versions) |
| AT519659B1 (en) * | 2017-04-04 | 2018-09-15 | Constantia Hueck Folien Gmbh & Co Kg | Packaging film with a partial application of heat sealing lacquer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1226042A (en) * | 1968-11-05 | 1971-03-24 |
-
1988
- 1988-07-14 DE DE3823905A patent/DE3823905C1/de not_active Expired
-
1989
- 1989-07-04 IT IT8921083A patent/IT1230045B/en active
- 1989-07-07 GB GB8915596A patent/GB2221421B/en not_active Expired
- 1989-07-11 FR FR8909296A patent/FR2635725B1/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0723986A1 (en) * | 1995-01-19 | 1996-07-31 | Fuji Photo Film Co., Ltd. | Process for the preparation of cellulose acetate film |
| EP0723993A1 (en) * | 1995-01-19 | 1996-07-31 | Fuji Photo Film Co., Ltd. | Cellulose acetate solution and process for the preparation of the same |
| US5705632A (en) * | 1995-01-19 | 1998-01-06 | Fuji Photo Film Co., Ltd. | Process for the preparation of cellulose acetate film |
| EP1134259A2 (en) * | 1995-01-19 | 2001-09-19 | Fuji Photo Film Co., Ltd. | Cellulose acetate solution and process for the preparation of the same |
| EP1134259A3 (en) * | 1995-01-19 | 2002-01-16 | Fuji Photo Film Co., Ltd. | Cellulose acetate solution and process for the preparation of the same |
| EP1548055A1 (en) * | 1995-01-19 | 2005-06-29 | Fuji Photo Film Co., Ltd. | Cellulose acetate solution and process for the preparation of the same |
| EP0779321A2 (en) * | 1995-12-05 | 1997-06-18 | Fuji Photo Film Co., Ltd. | Process and apparatus for the preparation of polymer solution |
| EP0779321A3 (en) * | 1995-12-05 | 1998-02-25 | Fuji Photo Film Co., Ltd. | Process and apparatus for the preparation of polymer solution |
| CN1071350C (en) * | 1995-12-05 | 2001-09-19 | 富士胶片公司 | Process and apparatus for preparation of polymer solution |
| CN1448257B (en) * | 2002-03-29 | 2010-04-28 | 富士胶片株式会社 | Cool-dissolving apparatus and preparation method for polymer solution and products thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8915596D0 (en) | 1989-08-23 |
| FR2635725A1 (en) | 1990-03-02 |
| GB2221421B (en) | 1992-10-07 |
| IT1230045B (en) | 1991-09-27 |
| IT8921083A0 (en) | 1989-07-04 |
| FR2635725B1 (en) | 1995-06-23 |
| DE3823905C1 (en) | 1989-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19960707 |