CN106448442A - QR-code label production process - Google Patents
QR-code label production process Download PDFInfo
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- CN106448442A CN106448442A CN201611108525.2A CN201611108525A CN106448442A CN 106448442 A CN106448442 A CN 106448442A CN 201611108525 A CN201611108525 A CN 201611108525A CN 106448442 A CN106448442 A CN 106448442A
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- code label
- dimension code
- production technology
- label production
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F3/0297—Forms or constructions including a machine-readable marking, e.g. a bar code
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06037—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking multi-dimensional coding
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a QR-code label production process. The QR-code label production process includes, step 1: selecting the substrate and grinding to form the polishing area in the area to be coated of the substrate; step 2: applying the glazing composition to the polishing area; step 3: baking at the constant temperature. The method of the present invention allows the glazing composition to be directly applied to the surface of the substrate after a simple treatment of the substrate. The method of operation is simpler, reduces labor cost in the manufacturing process of the whole QR-code label and greatly saves time cost. Moreover, the completion of the QR-code label preparation process is faster and smoother, and the quantitative production of the production line can be conveniently realized. Especially the glazing layer with consistent thickness and good quality can be easily obtained. There will be no 'undercoat' and 'topcoat' separation, and damage to the QR-code label that cannot be scanned and identified.
Description
Technical field
A kind of the present invention relates to correlative technology field of Quick Response Code, more particularly, it relates to two-dimension code label production technology.
Background technology
Quick Response Code also known as QR Code, QR full name Quick Response, be one super popular on mobile device in recent years
A kind of coded system, it can deposit more information than traditional Bar Code bar code, can also represent more data types.
Two-dimensional bar code/Quick Response Code (2-dimensional bar code) is with certain specific geometric figure according to certain rules
The chequered with black and white graphic recording data symbol information being distributed in plane (on two-dimensional directional)；Ingenious land productivity on coding
With the concept of " 0 ", " 1 " bit stream for constituting computer-internal logical foundations, using several geometry corresponding with binary system
Body is located with realizing information by image input device or photoelectric scanning device automatically identifying and reading automatically representing word numerical information
Reason：It has some general character of barcode technology：Every kind of code system has its specific character set；Each character occupies certain width；
With certain verifying function etc..Simultaneously also there is the information automatic identification function to different rows and process figure is rotationally-varying
Point.
At present, Quick Response Code identifies the application that just progressively putting it over, and applies in various materials.Two dimension on plastic
Code is also more and more universal, and in order to inquire about the true and false of product or add concern information, consumer's using terminal arranges scanning Quick Response Code,
Quick Response Code provides a unique ID for product, is that product inquiry is reviewed there is provided the help of corresponding function.
In most of the cases, two-dimension code label needs applied in two coats in preparation process, i.e. " priming coat " and " face painting
Layer ".Sometimes, applied in two coats " priming coat " is also needed to be coated with one layer " finishing coat ".This traditional two-dimension code label preparation technology
Program is complicated, and the Quick Response Code mark for preparing is not easy to be operated continuously, and when needing to wait for longer after " priming coat " is coated
Between can just coat " finishing coat ", extend the time for preparing needed for finished product, time-consuming.
Meanwhile, " priming coat " and " finishing coat " easily occurs to separate, and the consistency of thickness of finished product is poor, and two-dimension code label is easy
In damage.
Content of the invention
In view of this, the technical problem to be solved in the present invention is to overcome the defect of prior art, there is provided a kind of two dimension
Code label production technology, comprises the following steps：
Step one：Base material is selected, and polishing is carried out in the area to be coated of base material and formed Sanding Area；
Step 2：Glazing composition is coated on the Sanding Area；
Step 3：Constant temperature baking.
In some embodiments, the preparation process of the glazing composition, comprises the following steps：
Step one：The enamel glaze of powder is mixed with the thermosetting resin of powder or particle form；
Step 2：Gained mixture is heated and the temperature of crosslinking temperature is being less than higher than thermosetting resin fusion temperature
Under plasticate；
Step 3：The mixture that plasticates is cool below the glass transition temperature of thermosetting resin；
Step 4: cooling and curing mixture is made to powder.
In some embodiments, before described step 2, also comprise the process of spreading agent being coated to described substrate surface.
In some embodiments, described spreading agent is polyacrylate based spreading agent.
In some embodiments, in described step 1, also comprise the process that adds degasser.
In some embodiments, described degasser is styrax degasser.
In some embodiments, in described step 1, also comprise the process that adds lubricant.
In some embodiments, described lubricant is selected from Tissuemat E, ethene and vinylacetate or acrylic acid low-molecular weight copolymer of ethylene waxes, oxidation.
In some embodiments, the powder of the enamel glaze of 10% volume in described glazing composition can not be by 40 Micron sieve aperture;
In the grading curve of described glazing composition, maximum is not more than 100 microns.
In some embodiments, the temperature of described constant temperature baking is 700～1000 DEG C.
Two-dimension code label preparation technology provided by the invention with respect to the beneficial effect of prior art is: two-dimension code label production technology, comprises the following steps:
Step 1: select base material, and the formation Sanding Area of polishing in the district to be coated of base material;
Step 2: glazing composition is coated on to described Sanding Area;
Step 3: constant temperature baking.
Compare with traditional glazing method, unless method of the present invention preparation people proposition, otherwise without base material is anticipated.
In addition, and traditional two-dimension code label is in preparation process, needs applied in two coats, and " priming coat " compared with " finishing coat ", and method of the present invention is being carried out after simple process base material, glazing composition directly can be coated on to the surface of base material.
The method of operating of technique is more simple, lower for operating personnel's technical ability requirement, is easy to operator training and can obtains this operative skill within short-term.
And, avoided etc. needing to wait for that the long period could apply the problem of " finishing coat " after " priming coat " to be coated. both reduce the employment cost of whole two-dimension code label in preparation process, also saved greatly time cost.
And, the speed that completes two-dimension code label preparation technology is more smooth sooner, conveniently carries out the quantification of pipeline system and produces. be especially easy to obtain that consistency of thickness is better, the good glaze layer of quality. there will not be that " priming coat " separates with " finishing coat ", two-dimension code label damage and situation that cannot scanning recognition.
Further, the preparation process of glazing composition, comprises the following steps:
Step 1: pulverous enamel glaze is mixed with the thermosetting resin of powder or particle form;
Step 2: by the heating of gained mixture and in the temperature lower than crosslinking temperature higher than thermosetting resin fusion temperature Under plasticate;
Step 3: the mixture of plasticating is cooled to the glass transition temperature lower than thermosetting resin;
Step 4: cooling and curing mixture is made to powder.
This glazing composition is more easier than preparing traditional fluid glazing composition. and without add dispersant, antisettling agent or defoamer in preparation process.
Enamel glaze content in powdered composition in the present invention in fact can also be than higher in fluid glazing composition.
Be understandable that, object gained mixture being heated and plasticate at the temperature lower than crosslinking temperature higher than thermosetting resin fusion temperature is to make enamel glaze carefully and equably to disperse in resin, under such dispersion, enamel frit particles is wrapped up by resin.
Preferably, the roll extrusion between cooling cylinder of cooling and curing mixture, the cooling mixture obtaining is like this by rolling and grinding becomes powder.
Plasticating of mixture must can make the abundant fluidisation of thermosetting resin and the enamel glaze can fine dispersion in resin and do not form or seldom form at crosslinked temperature and carry out.
Preferably, be 130 DEG C～140 DEG C.
Preferably, continuously above-mentioned powder mixture is carried out to electrostatic spraying in the surface of base material by spray gun.
Further, before described step 2, also comprise the process of spreading agent being coated to described substrate surface.
This spreading agent makes to be about to spreadability that the fused film that forms on base material had and good outward appearance, can be selected from the interior known spreading agent of art of powder coatings.
Especially, spreading agent can be polyacrylate based spreading agent.
Further, in described step 1, also comprise the process that adds degasser.
This degasser can be taken away the volatile products that produce in crosslinked operating process. especially can avoid producing defect, as " pin hole ". and degasser can be selected from known degasser in art of powder coatings.
Especially, degasser can be styrax.
Further, in described step 1, also comprise the process that adds lubricant.
This lubricant is conducive to form the cross linking membrane being obtained by the present composition and is coated on substrate surface. and, be understandable that the deteriorated risk that lubricant occurs can reduce cross linking membrane by deep stretch time.
In sum, it has above-mentioned many advantages and value callus inducing medium provided by the invention, and publish or use and really genus innovation there are no similar method in like product, produce handy and practical effect, more existing technology has multinomial effect of enhancement, thereby be comparatively suitable for practicality, and there is industrial value widely.
Detailed description of the invention
Mode below in conjunction with specific embodiment is described in further detail claim of the present invention, has set forth in the following description a lot of details so that fully understand the present invention.
But the present invention can implement to be much different from alternate manner described here, and those skilled in the art can do similar improvement without prejudice to intension of the present invention in the situation that, and therefore the present invention is not subject to the restriction of following public concrete enforcement.
A kind of two-dimension code label production technology is provided, has comprised the following steps:
Step 1: select base material, and the formation Sanding Area of polishing in the district to be coated of base material;
Step 2: glazing composition is coated on to described Sanding Area;
Step 3: constant temperature baking.
Above-mentioned, compare with traditional glazing method, unless method of the present invention preparation people proposition, otherwise without base material is anticipated.
In addition, and traditional two-dimension code label is in preparation process, needs applied in two coats, and " priming coat " compared with " finishing coat ", and method of the present invention is being carried out after simple process base material, glazing composition directly can be coated on to the surface of base material.
The method of operating of technique is more simple, lower for operating personnel's technical ability requirement, is easy to operator training and can obtains this operative skill within short-term.
And, avoided etc. needing to wait for that the long period could apply the problem of " finishing coat " after " priming coat " to be coated. both reduce the employment cost of whole two-dimension code label in preparation process, also saved greatly time cost.
And, the speed that completes two-dimension code label preparation technology is more smooth sooner, conveniently carries out the quantification of pipeline system and produces. be especially easy to obtain that consistency of thickness is better, the good glaze layer of quality. there will not be that " priming coat " separates with " finishing coat ", two-dimension code label damage and situation that cannot scanning recognition.
Be understandable that, in order better to protect base material, can spray anti-oxidation particle in the region of uncoated glazing composition.
After spraying anti-oxidation particle, base material is put into the baking of baking box constant temperature, makes the surface in the region of anti-oxidation particles fuse and the uncoated glazing composition of base material form inoxidzable coating.
Further, the preparation process of described glazing composition, comprises the following steps:
Step 1: pulverous enamel glaze is mixed with the thermosetting resin of powder or particle form;
Step 2: by the heating of gained mixture and in the temperature lower than crosslinking temperature higher than thermosetting resin fusion temperature Under plasticate;
Step 3: the mixture of plasticating is cooled to the glass transition temperature lower than thermosetting resin;
Step 4: cooling and curing mixture is made to powder.
Above-mentioned, this glazing composition is more easier than preparing traditional fluid glazing composition. and without add dispersant, antisettling agent or defoamer in preparation process.
Enamel glaze content in powdered composition in the present invention in fact can also be than Higher. in fluid glazing composition
It is understood that gained mixture being heated and being less than crosslinking temperature higher than thermosetting resin fusion temperatureAt a temperature of the purpose plasticated be to make enamel glaze thin and be uniformly dispersed in resin, under such dispersion, enamel glaze material particle is wrapped up by resin.
Preferably, the mixture for cooling down and solidifying is rolled between the cylinder of cooling, the mixture of the cooling for so obtaining
By rolling and grinding is changed into powder.
Plasticating for mixture must can make thermosetting resin fully fluidize and enamel glaze well can divide in resin is loose and do not form or seldom form at crosslinked temperature and carry out.
Preferably, it is 130 DEG C～140 DEG C.
Preferably, continuously above-mentioned powder mixture is carried out electrostatic spraying in the surface of base material by spray gun.
Further, also include before the step 2 to coat spreading agent the process of the substrate surface.
Above-mentioned, this spreading agent makes to be about to spreadability that the fused film that forms on base material had and good outward appearance, can Known spreading agent in art of powder coatings.
Further, described spreading agent is polyacrylate based spreading agent.
Further, also include in the step one to add the process of degasser.
Above-mentioned, the volatile products that the degasser is produced during can taking away cross-linking procedure.Can especially avoid producing defect, as " pin hole " .Degasser is selected from art of powder coatings known degasser.
Further, the degasser is Benzoinum degasser.
Further, also include in the step one to add the process of lubricant.
Above-mentioned, the lubricant advantageously forms the cross linking membrane for being obtained by the present composition and is coated on substrate surface.Also,
It is understood that the deterioration risk that lubricant occurs when can reduce cross linking membrane by deep stretch.
Further, the lubricant is selected from ethylene waxes, the Tissuemat E of oxidation, ethylene and vinylacetate or acrylic acid
Low-molecular weight copolymer.
Further, the powder of the enamel glaze of 10% volume in the glazing composition can not pass through 40 pm mesh size；
In the grading curve of the glazing composition, maximum is not more than 100 microns.
Further, the temperature of the constant temperature baking is 700～1000 DEG C.
For the ease of understanding the present invention, technical scheme is further illustrated with reference to embodiment.Applicant
Statement, the present invention illustrates the detailed process equipment of the present invention and technological process by above-described embodiment, but the present invention not office
It is limited to above-mentioned detailed process equipment and technological process, that is, does not mean that the present invention should rely on above-mentioned detailed process equipment and technique stream
Cheng Caineng is implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention, to each original of product of the present invention
The interpolation of the equivalence replacement of material and auxiliary element, selection of concrete mode etc., all fall within protection scope of the present invention and open model
Within enclosing.
Embodiment 1
Two-dimension code label production technology：Comprise the following steps：
Step one：Cold rolling steel sheets are selected for base material, and carry out polishing in the area to be coated of base material to form Sanding Area；
Step 2：Glazing composition is coated on the Sanding Area；
Step 3：700 DEG C of bakings of constant temperature；
Wherein, the preparation method of glazing composition is：
Step one：By the commercial polyester resin of the carboxy blocking of powder and cross-linking agent isonitrile urea acid three-glycidyl ester,
Catalyst phosphorus Halides, spreading agent absorption liquid acrylic on silica, degasser Benzoinum, enamel glaze dry
Mixing；
Step 2：Gained mixture is heated to fusing, in an extruder, compositionss are plasticated and to be blended into component complete
Uniform degree, then extrudes；
Step 3：In the outfan of extruder, the product of pasty state rolling between the cylinder of two coolings, cold so as to obtain
But sheet material is formed；
Step 4：Sheet material is led to overcooled tape transport, in this process, is reduced the temperature of mixture and be allowed to solid
Change, then solid material is crushed the powder for obtaining that maximum in grading curve is 100 microns that sieves that fragmentates.
Embodiment 2
Two-dimension code label production technology, it is characterised in that：Comprise the following steps：
Step one：Cold rolling steel sheets are selected for base material, and carry out polishing in the area to be coated of base material to form Sanding Area；
Step 2：Glazing composition is coated on the Sanding Area；
Step 3：1000 DEG C of bakings of constant temperature；
Wherein, the preparation method of glazing composition is：
Step one：By the commercial polyester resin of the carboxy blocking of powder and cross-linking agent isonitrile urea acid three-glycidyl ester,
Catalyst phosphorus Halides, spreading agent absorption liquid acrylic on silica, degasser Benzoinum, enamel glaze dry
Mixing；
Step 2：Gained mixture is heated to fusing, in an extruder, compositionss are plasticated and to be blended into component complete
Uniform degree, then extrudes；
Step 3：In the outfan of extruder, the product of pasty state rolling between the cylinder of two coolings, cold so as to obtain
But sheet material is formed；
Step 4：Sheet material is led to overcooled tape transport, in this process, is reduced the temperature of mixture and be allowed to solid
Change, then solid material is crushed the powder for obtaining that maximum in grading curve is 80 microns that sieves that fragmentates.
Embodiment 3
Two-dimension code label production technology, it is characterised in that：Comprise the following steps：
Step one：Cold rolling steel sheets are selected for base material, and carry out polishing in the area to be coated of base material to form Sanding Area；
Step 2：Glazing composition is coated on the Sanding Area；
Step 3：800 DEG C of bakings of constant temperature；
Wherein, the preparation method of glazing composition is：
Step one：By the commercial polyester resin of the carboxy blocking of powder and cross-linking agent isonitrile urea acid three-glycidyl ester,
Catalyst phosphorus Halides, spreading agent absorption liquid acrylic on silica, degasser Benzoinum, enamel glaze dry
Mixing；
Step 2：Gained mixture is heated to fusing, in an extruder, compositionss are plasticated and to be blended into component complete
Uniform degree, then extrudes；
Step 3：In the outfan of extruder, the product of pasty state rolling between the cylinder of two coolings, cold so as to obtain
But sheet material is formed；
Step 4：Sheet material is led to overcooled tape transport, in this process, is reduced the temperature of mixture and be allowed to solid
Change, then solid material is crushed the powder for obtaining that maximum in grading curve is 50 microns that sieves that fragmentates.
Embodiment 4
Two-dimension code label production technology, it is characterised in that：Comprise the following steps：
Step one：Cold rolling steel sheets are selected for base material, and carry out polishing in the area to be coated of base material to form Sanding Area；
Step 2：Glazing composition is coated on the Sanding Area；
Step 3：900 DEG C of bakings of constant temperature；
Wherein, the preparation method of glazing composition is：
Step one：By the commercial polyester resin of the carboxy blocking of powder and cross-linking agent isonitrile urea acid three-glycidyl ester,
Catalyst phosphorus Halides, spreading agent absorption liquid acrylic on silica, degasser Benzoinum, enamel glaze dry
Mixing；
Step 2：Gained mixture is heated to fusing, in an extruder, compositionss are plasticated and to be blended into component complete
Uniform degree, then extrudes；
Step 3：In the outfan of extruder, the product of pasty state rolling between the cylinder of two coolings, cold so as to obtain
But sheet material is formed；
Step 4：Sheet material is led to overcooled tape transport, in this process, is reduced the temperature of mixture and be allowed to solid
Change, then solid material is crushed the powder for obtaining that maximum in grading curve is 60 microns that sieves that fragmentates.
Embodiment 5
Two-dimension code label production technology, it is characterised in that：Comprise the following steps：
Step one：Cold rolling steel sheets are selected for base material, and carry out polishing in the area to be coated of base material to form Sanding Area；
Step 2：Glazing composition is coated on the Sanding Area；
Step 3：850 DEG C of bakings of constant temperature；
Wherein, the preparation method of glazing composition is：
Step one：By the commercial polyester resin of the carboxy blocking of powder and cross-linking agent isonitrile urea acid three-glycidyl ester,
Catalyst phosphorus Halides, spreading agent absorption liquid acrylic on silica, degasser Benzoinum, enamel glaze dry
Mixing；
Step 2：Gained mixture is heated to fusing, in an extruder, compositionss are plasticated and to be blended into component complete
Uniform degree, then extrudes；
Step 3：In the outfan of extruder, the product of pasty state rolling between the cylinder of two coolings, cold so as to obtain
But sheet material is formed；
Step 4：Sheet material is led to overcooled tape transport, in this process, is reduced the temperature of mixture and be allowed to solid
Change, then solid material is crushed the powder for obtaining that maximum in grading curve is 55 microns that sieves that fragmentates.
Claims (10)
1. two-dimension code label production technology, it is characterised in that：Comprise the following steps：
Step one：Base material is selected, and polishing is carried out in the area to be coated of base material and formed Sanding Area；
Step 2：Glazing composition is coated on the Sanding Area；
Step 3：Constant temperature baking.
2. two-dimension code label production technology according to claim 1, it is characterised in that：The preparation of the glazing composition
Journey, comprises the following steps：
Step one：The enamel glaze of powder is mixed with the thermosetting resin of powder or particle form；
Step 2：Gained mixture is heated and is moulded being less than higher than thermosetting resin fusion temperature at a temperature of crosslinking temperature
Refining；
Step 3：The mixture that plasticates is cool below the glass transition temperature of thermosetting resin；
Step 4：The mixture for cooling down and solidify is made powder.
3. two-dimension code label production technology according to claim 1, it is characterised in that：Also include before the step 2 by
Spreading agent coats the process of the substrate surface.
4. two-dimension code label production technology according to claim 3, it is characterised in that：The spreading agent is polyacrylate
Base spreading agent.
5. two-dimension code label production technology according to claim 2, it is characterised in that：Also include in the step one to add
The process of degasser.
6. two-dimension code label production technology according to claim 5, it is characterised in that：The degasser is deaerated for Benzoinum
Agent.
7. two-dimension code label production technology according to claim 2, it is characterised in that：Also include in the step one to add
The process of lubricant.
8. two-dimension code label production technology according to claim 7, it is characterised in that：The lubricant selected from ethylene waxes,
The Tissuemat E of oxidation, ethylene and vinylacetate or acrylic acid low-molecular weight copolymer.
9. two-dimension code label production technology according to claim 2, it is characterised in that 10% in the glazing composition
The powder of the enamel glaze of volume can not pass through 40 pm mesh size；
In the grading curve of the glazing composition, maximum is not more than 100 microns.
10. two-dimension code label production technology according to claim 1, it is characterised in that：The temperature of the constant temperature baking is
700～1000 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108525.2A CN106448442A (en) | 2016-12-06 | 2016-12-06 | QR-code label production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108525.2A CN106448442A (en) | 2016-12-06 | 2016-12-06 | QR-code label production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106448442A true CN106448442A (en) | 2017-02-22 |
Family
ID=58223935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611108525.2A Pending CN106448442A (en) | 2016-12-06 | 2016-12-06 | QR-code label production process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050003A (en) * | 1990-08-15 | 1991-03-20 | 李子剑 | Art calligraphy decoration plate and manufacture method thereof |
| CN1326427A (en) * | 1998-10-12 | 2001-12-12 | 索拉克有限公司 | Enamel application composition and method for making enamelled formed parts |
| CN1503766A (en) * | 2001-03-13 | 2004-06-09 | �ƿ����ɣ��������Ϳ������� | Enamelling composition and method for producing a part formed from enamelled sheet metal |
| CN101853620A (en) * | 2009-11-19 | 2010-10-06 | 广州市地下铁道总公司 | Manufacture method of long-afterglow self-luminous ground marks |
| US20130115445A1 (en) * | 2010-07-09 | 2013-05-09 | Agc Glass Europe | Glass article coated with an enamel-based layer |
-
2016
- 2016-12-06 CN CN201611108525.2A patent/CN106448442A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050003A (en) * | 1990-08-15 | 1991-03-20 | 李子剑 | Art calligraphy decoration plate and manufacture method thereof |
| CN1326427A (en) * | 1998-10-12 | 2001-12-12 | 索拉克有限公司 | Enamel application composition and method for making enamelled formed parts |
| CN1503766A (en) * | 2001-03-13 | 2004-06-09 | �ƿ����ɣ��������Ϳ������� | Enamelling composition and method for producing a part formed from enamelled sheet metal |
| CN101853620A (en) * | 2009-11-19 | 2010-10-06 | 广州市地下铁道总公司 | Manufacture method of long-afterglow self-luminous ground marks |
| US20130115445A1 (en) * | 2010-07-09 | 2013-05-09 | Agc Glass Europe | Glass article coated with an enamel-based layer |
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Application publication date: 20170222 |