CN115895329B - Coating, surface erasable writing product and preparation method thereof - Google Patents
Coating, surface erasable writing product and preparation method thereof Download PDFInfo
- Publication number
- CN115895329B CN115895329B CN202110929822.8A CN202110929822A CN115895329B CN 115895329 B CN115895329 B CN 115895329B CN 202110929822 A CN202110929822 A CN 202110929822A CN 115895329 B CN115895329 B CN 115895329B
- Authority
- CN
- China
- Prior art keywords
- coating
- writing
- parts
- weight
- erased
- 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.)
- Active
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 74
- 239000011248 coating agent Substances 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- 238000002360 preparation method Methods 0.000 title description 8
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000003746 surface roughness Effects 0.000 claims abstract description 11
- 229920002545 silicone oil Polymers 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000006224 matting agent Substances 0.000 claims abstract description 6
- 239000006096 absorbing agent Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000002344 surface layer Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 8
- 238000007650 screen-printing Methods 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000004925 Acrylic resin Substances 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 2
- 238000007776 silk screen coating Methods 0.000 claims description 2
- 244000269722 Thea sinensis Species 0.000 claims 1
- 230000002745 absorbent Effects 0.000 claims 1
- 239000002250 absorbent Substances 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 5
- 239000002966 varnish Substances 0.000 description 5
- 238000001723 curing Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000007645 offset printing Methods 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 241001422033 Thestylus Species 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- -1 polyoxy silane Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The present disclosure provides a coating, a surface erasable writing article, and a method of making the same. The coating comprises 82-85 parts by weight of film forming agent, 0.5-1.5 parts by weight of matting agent, 9-11 parts by weight of silicone oil regulator and 3-5 parts by weight of ink absorbing agent. Wherein, writing on the coating formed after the coating is solidified can be wiped by a wiping material with a surface roughness of more than or equal to 0.5us. The coating formed after the coating is cured can be erased, and a writing object written on the coating cannot be erased by hands or the like through relatively smooth wiping objects, but can be erased by using relatively coarse wiping objects such as toilet paper or cloth, so that the writing object is prevented from being erased unintentionally, and the coating is beneficial to a user.
Description
Technical Field
The present disclosure relates to the field of coatings, and in particular, to a coating, a surface erasable writing article, and a method of making the same.
Background
The erasable coating has the advantages of fluency in writing, repeated erasing and the like, and is widely used in occasions such as teaching, office, meeting, market and the like.
However, existing erasable coatings (e.g., writing whiteboards) are too smooth in surface and the writing on the erasable coating by a writing pen (e.g., a whiteboard pen) is easily erased, resulting in unchanged usage by the user. If the writing object is kept on the erasable coating for a longer time, the existing mode is to replace the whiteboard pen with an alcohol pen, and the writing object written by the alcohol pen is difficult to wipe by skin or general wiping object, and needs to be wiped by alcohol.
Disclosure of Invention
A first object of the present disclosure is to provide an environmentally friendly coating. The coating formed after the coating is solidified can be erased and written, and the written matter written on the coating can not be erased by hands or other relatively smooth wiping matters, but can be erased by using toilet paper or cloth or other relatively rough wiping matters, so that the written matter is prevented from being erased unintentionally, and the coating is beneficial to users.
The present disclosure provides a coating comprising:
wherein, writing on the coating formed after the coating is cured can be wiped off by a wiping material with a surface roughness of 0.5us or more (static friction coefficient).
In some embodiments of the present disclosure, the coating further comprises 1-2 parts by weight of an antifoaming agent.
In some embodiments of the present disclosure, the film former is a silk screen varnish.
In some embodiments of the present disclosure, the ink absorber is silk screen dedicated silica.
In some embodiments of the present disclosure, the coating has a viscosity of 1800 to 2000cps at room temperature and a ph of 6.5 to 7.5.
A second object of the present disclosure is to provide a surface erasable writing article comprising a substrate layer and a surface layer formed from the coating of any one of claims 1-5 after curing.
In some embodiments of the present disclosure, the substrate layer has images and/or text printed thereon.
In some embodiments of the present disclosure, the surface roughness of the substrate layer is 0.05us or less.
In some embodiments of the present disclosure, the thickness of the skin layer is 0.03mm or less.
The coating and the corresponding surface erasable writing product provided by the disclosure have better inking property than the existing erasable coating, and the writing product can be stored for a longer time and is more environment-friendly. The preparation method provided by the disclosure is very simple and is suitable for industrial application.
Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and together with the description serve to explain the disclosure, and do not constitute a limitation on the disclosure. In the drawings:
FIG. 1 is a schematic diagram of the pattern shape of a price tag prepared in an embodiment of the present disclosure.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
The following detailed description of specific embodiments of the invention is provided in connection with the accompanying drawings and examples in order to provide a better understanding of the aspects of the invention and advantages thereof. However, the following description of specific embodiments and examples is for illustrative purposes only and is not intended to be limiting of the invention.
The present disclosure provides a coating comprising: 82-85 parts by weight of a film forming agent; 0.5-1.5 parts by weight of a matting agent; 9-11 parts by weight of a silicone oil regulator; and 3-5 parts by weight of an ink absorber. The writing material written on the coating formed after the coating is cured can be wiped by a wiping material with the surface roughness of more than or equal to 0.5us.
The coating formed after the coating is cured can be erased, and a writing object written on the coating cannot be erased by hands or the like through relatively smooth wiping objects, but can be erased by using relatively coarse wiping objects such as toilet paper or cloth, so that the writing object is prevented from being erased unintentionally, and the coating is beneficial to a user. This is mainly because a relatively smooth-surfaced wiper (e.g., skin such as a hand) is difficult to erase the pigment absorbed by the components in the relief layer (e.g., ink toner of a whiteboard pen writing), whereas a wiper such as a paper towel or cloth has a large surface roughness, and can easily erase the pigment in the relief layer.
The writing object in the present disclosure may be a writing object for writing with a whiteboard pen, or may be a writing object for writing with an ink pen, or even with a pencil.
Optionally, the film forming agent is silk screen printing varnish oil with acrylic resin as a main component, and is suitable for silk screen printing.
Alternatively, the matting agent is an epoxy-based polyacrylate resin. In the present disclosure, matting agents are used to adjust the refractive properties of the film forming agents.
Optionally, the silicone oil modifier comprises a polyoxy silane, a high boiling point dearomatization solvent oil of d 20-120. The silicone oil modifier in the present disclosure helps to increase the affinity of the ink of the stylus to the coating formed by the paint, making the ink of the stylus easier to ink on the coating. The silicone oil regulator in the application preferably has a viscosity of more than 1 ten thousand, and is more beneficial to inking.
Optionally, the ink absorber is silica, preferably silk screen dedicated silica. The special silica for silk screen printing can not only play a role in ink absorption, but also play a role in refraction, so that the performance of the coating is more excellent.
Optionally, the coating may also include 1-2 parts by weight of an antifoaming agent. The defoamer is mainly used for preventing the paint from generating pinholes, bubbles and the like in the coating process, so that the problems of printing omission and the like are avoided.
The preparation method comprises the following steps: after weighing, sequentially adding the components by using a stirrer at normal temperature, and uniformly mixing.
To facilitate industrial application, the viscosity of the coatings of the present disclosure may be 1800 to 2000cps at room temperature and the ph may be 6.5 to 7.5.
The coating disclosed by the disclosure belongs to ultraviolet light curable coatings, is colorless liquid at room temperature, has very high drying speed, and can be cured into a coating within 3 seconds under the irradiation of three 80w/cm high-pressure mercury lamps, wherein the thickness of the coating is 0.03mm.
The present disclosure provides a surface erasable writing article comprising a substrate layer and a surface layer formed from the above-described coating material after curing.
Optionally, the surface roughness of the substrate layer is less than or equal to 0.05us. Thus, the writing on the formed surface layer is also difficult to wipe off by a relatively smooth wiper such as a hand after the application of the above-mentioned paint. The material of the smooth substrate layers can be PVC material, PET material, BOPP film, etc.
Optionally, the thickness of the surface layer formed on the surface of the substrate layer after the coating is less than or equal to 0.03mm.
Writing articles of the present disclosure include, but are not limited to, whiteboards, bank cards, price tags, film-like articles, and the like.
Optionally, the substrate layer has images and/or text printed thereon. That is, the coating disclosed by the invention can be coated on the surface of the printed matter after the whole printed matter is printed, and is very convenient to use.
The present disclosure provides methods of making the writing articles described above, which may include:
coating the coating on the substrate layer by adopting a silk screen coating mode;
the coating is cured using ultraviolet curing techniques to form a surface layer.
The preparation method provided by the disclosure is very simple, does not need to additionally increase equipment during preparation, and reduces the cost.
The present disclosure is described below with reference to specific embodiments. The values of the process conditions taken in the examples below are exemplary and can be obtained in the ranges indicated in the foregoing summary, and for process parameters not specifically identified, reference may be made to conventional techniques. The detection methods used in the examples below are all conventional in the industry. Reagents and instrumentation used in the technical solutions provided in the present disclosure are commercially available from conventional sources or markets unless otherwise specified.
Examples
The embodiment prepares a surface erasable price tag, the shape of which is shown in figure 1, and the preparation process is as follows:
the base material layer containing the pattern shown in figure 1 is prepared by taking 0.28mm matt white PVC (Dongguan Xu liter packaging material factory) as a raw material, firstly adopting a UV offset printing technology to obtain a price tag of basic graphics and texts, and then adopting a screen printing technology to print.
The surface roughness of the substrate layer was about 0.05us.
A coating material was prepared, which consisted of 84 parts by weight of silk screen varnish, 1 part by weight of an epoxy-based polyacrylate resin, 10 parts by weight of a silicone oil regulator, 3 parts by weight of silk screen dedicated silica and 2 parts by weight of a defoaming agent, specifically see table 1.
Table 1 coating compositions of examples
The obtained coating has colorless liquid appearance, a viscosity of about 2000cps at room temperature, and a specific gravity of about 1.05g/cm 3 A pH of about 7.1; the test instrument was a TU4 cup.
The coating is sent into a screen coater, and the coating is carried out on the substrate layer by adopting the screen coating technology, wherein the coating speed is 2000SHT/H, and the coating thickness is 0.03mm. After the coating is finished, ultraviolet curing treatment is carried out on the coating, and the coating can be cured for about 2 seconds, so that the required price tag is obtained.
Dividing the price tag into four parts, writing on the four parts of price tag by a whiteboard pen (morning light 2201 whiteboard pen), and wiping by the same person at the palm and daily paper extraction time of 0, 1, 5 and 24 hours after writing. The paper extraction adopts Guangdong Sanxingbai paper industry 580 type paper extraction (GB 15979) of about 0.5us. As a result, all the writing on the four price tags cannot be erased by the palm center, but can be erased by the toilet paper.
By wiping as used herein, it is meant that the writing is substantially wiped clean, with no residue.
Comparative example 1
The comparative example was prepared as a price tag with erasable surface, which was prepared by using 0.28mm thick matt white PVC (Dongguan Xu-liter packaging material factory) as a raw material, obtaining a price tag with basic graphics by using a UV offset printing technology, and printing by using a screen printing technology to obtain a base material layer with the pattern shown in FIG. 1. The surface roughness of the substrate layer was about 0.05us.
Unlike the examples, the price tags prepared in comparative example 1 were not coated with the coating prepared in the examples.
The same test as in example was performed by dividing the price tag prepared in this comparative example into four.
As a result, the writing on the four price tags can be easily erased by the palm center.
Comparative example 2
The comparative example was prepared as a price tag with erasable surface, which was prepared by using 0.28mm thick matt white PVC (Dongguan Xu-liter packaging material factory) as a raw material, obtaining a price tag with basic graphics by using a UV offset printing technology, and printing by using a screen printing technology to obtain a base material layer with the pattern shown in FIG. 1. The surface roughness of the substrate layer was about 0.05us.
Unlike the examples, the price label produced in comparative example 2 was coated as a substrate layer with a coating other than the coating produced in the examples, but with only a screen varnish. The screen printing varnish used in comparative example 2 was identical to that of example and the coating process was also exactly the same.
The same test as in example was performed by dividing the price tag of comparative example 2 into four.
As a result, the four label were erased by the palm center, but the force required to be applied to the label (i.e., palm effort) was slightly higher than in comparative example 1, and the number of times of erasing was slightly higher than in comparative example 1. That is, the writings on the price plate in this comparative example are slightly more difficult to erase than the writings on the price plate in comparative example 1.
In summary, the coating and the corresponding surface-erasable writing product provided by the present disclosure have better inking property than the existing erasable coating, and the writing product can be stored for a longer time and is more environment-friendly. The preparation method provided by the disclosure is very simple and is suitable for industrial application.
It is apparent that the above examples are merely illustrative of the present disclosure and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present disclosure.
Claims (6)
1. A writing article having a rewritable surface, comprising a base layer and a surface layer formed by curing a paint, wherein the base layer has a surface roughness of 0.05 μs or less, and wherein the paint comprises:
82-85 parts of film forming agent;
0.5 to 1.5 parts by weight of matting agent;
9-11 parts of silicone oil regulator; and
3-5 parts of ink absorbent;
the ink absorber is silicon dioxide of the model Dongguan tea mountain Lian Xin JC-290, and the film forming agent is silk screen printing gloss oil comprising acrylic resin;
the writing material written on the surface layer formed after the coating is cured can be wiped off by a wiping material with the surface roughness of more than 0.5 mu s and cannot be wiped off by hands of a person;
wherein the thickness of the surface layer is equal to 0.03mm.
2. The writing article of claim 1, wherein the coating further comprises 1-2 parts by weight of an antifoaming agent.
3. A writing article as in claim 1 wherein said matting agent is an epoxy-based polyacrylate resin.
4. A writing article according to claim 1, wherein the coating has a viscosity of 1800 to 2000cps at room temperature and a ph of 6.5 to 7.5.
5. A writing article as in claim 1, wherein said substrate layer has images and/or text printed thereon.
6. A method of making the writing article of any of claims 1-5, comprising:
coating the coating on the substrate layer by adopting a silk-screen coating mode;
and curing the coating by adopting an ultraviolet curing technology to form the surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110929822.8A CN115895329B (en) | 2021-08-13 | 2021-08-13 | Coating, surface erasable writing product and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110929822.8A CN115895329B (en) | 2021-08-13 | 2021-08-13 | Coating, surface erasable writing product and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115895329A CN115895329A (en) | 2023-04-04 |
| CN115895329B true CN115895329B (en) | 2024-03-29 |
Family
ID=86480002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110929822.8A Active CN115895329B (en) | 2021-08-13 | 2021-08-13 | Coating, surface erasable writing product and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115895329B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210337370U (en) * | 2019-07-25 | 2020-04-17 | 东莞市超智新材料有限公司 | Matte writing film |
| CN112795211A (en) * | 2020-12-28 | 2021-05-14 | 苏州德达材料科技有限公司 | Wall paint for writing and drawing and preparation method and application thereof |
-
2021
- 2021-08-13 CN CN202110929822.8A patent/CN115895329B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210337370U (en) * | 2019-07-25 | 2020-04-17 | 东莞市超智新材料有限公司 | Matte writing film |
| CN112795211A (en) * | 2020-12-28 | 2021-05-14 | 苏州德达材料科技有限公司 | Wall paint for writing and drawing and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115895329A (en) | 2023-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111254738B (en) | Antifouling printing method for paper printed matter | |
| US10845924B2 (en) | Capacitive devices and methods of fabricating same | |
| CN115895329B (en) | Coating, surface erasable writing product and preparation method thereof | |
| CN108373650A (en) | A kind of aqueous PET ink for screen printing and preparation method thereof | |
| CN105925190A (en) | Anti-static and scratch-resisting transparent matte gloss oil | |
| CN108859389A (en) | A kind of plate-making of screen process method, screen printing plate and silk-screen printing technique | |
| CN215970765U (en) | Compatible ink-jet printing gray base film | |
| CN101308611A (en) | Copying method of calligraphy characters and pictures | |
| CN104419242A (en) | New formula silk-screen printing color transfer paste | |
| CN104228375A (en) | Screen printing method | |
| CN100494568C (en) | Sheet capable of forming erasable print on surface | |
| CN109401431A (en) | A kind of aluminum-pinch silk-screen water-based ink | |
| CN201116047Y (en) | Reusable brush pen Chinese calligraphy and paintings practice board | |
| CN103373146A (en) | PET (polyethylene terephthalate) composite writing film | |
| CN206800068U (en) | A kind of non-woven paper air brushing consumptive material | |
| CN103377586A (en) | Label and production method | |
| KR0157228B1 (en) | Uv-curable coating composition for color-board | |
| CN113265082B (en) | Multifunctional erasable panel and preparation method thereof | |
| CN1182296C (en) | Coated paper | |
| TW565599B (en) | A display medium which the surface is made of coating material | |
| CN100587160C (en) | Drawing and writing paperboard | |
| KR200209446Y1 (en) | Board available for marker-pen | |
| JP2829220B2 (en) | Paint for forming information display surface | |
| KR100830132B1 (en) | Film for white board | |
| CN208148862U (en) | A kind of part dumb light heat transfer film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240228 Address after: 888 Ganghua Road, Hongguang Town, Pixian County, Chengdu, Sichuan 611743 Applicant after: Dangnali (Chengdu) Printing Co.,Ltd. Country or region after: China Address before: 523000 Daning village, Humen Town, Dongguan City, Guangdong Province Applicant before: JINGYE (DONGGUAN) PRINTING PACKAGING FACTORY CO.,LTD. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |