CN101927642A - Novel environmental-friendly microcapsule writing board - Google Patents
Novel environmental-friendly microcapsule writing board Download PDFInfo
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- CN101927642A CN101927642A CN201010266783XA CN201010266783A CN101927642A CN 101927642 A CN101927642 A CN 101927642A CN 201010266783X A CN201010266783X A CN 201010266783XA CN 201010266783 A CN201010266783 A CN 201010266783A CN 101927642 A CN101927642 A CN 101927642A
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Abstract
The invention relates to a novel environmental-friendly microcapsule writing board. The novel environmental-friendly microcapsule writing board comprises a PET film, microcapsules and protective layer glue, wherein the outer layer of the writing board is provided with the transparent PET film, and the microcapsules are distributed on the middle part of the writing board in parallel; the protective layer glue is arranged below the microcapsules; the writing board displays characters or graphs by using the upward/downward movement of magnetic display particles in dispersion liquid; when a writer writes on the upper part of a magnet, the upward movement surface of the magnetic display particles displays black; and when the magnet is on the downward movement surface, the magnetic display particles move downwards and display white. Through the novel environmental-friendly microcapsule writing board, writing can be performed by using a magnetic pen, stable and clear characters or images are displayed, and the displayed images or characters can be removed by the magnetic strips on the back of the writing board; moreover, the cosmetic-level white mineral oil is used as a carrier of the magnetic display particles, so the pollution caused by using an organic solvent as the carrier of the magnetic display particles is avoided and the dispersed suspension stability of the magnetic display particles is improved.
Description
Technical field
The present invention relates to a kind of environment-friendly type microcapsule writing board, affiliated technical field is the magnetic material Display Technique.More particularly, be a kind of board that has environmental-protecting performance and have good reading effect.
Background technology
Magnetic wordpad, or claim magnetic display board, basic display principles all is that magnetic material exists to maintain state, certain adding under the magneticaction, with directed movement in some suspension, realizes the demonstration or the disappearance of writing.The direction of motion is during near the reader, display image, and during away from the reader, picture drop-out.Magnetic wordpad has board and is applicable to that purposes such as demonstration, teaching, bulletin write, and can be used as children to learn to read instrument and toy and uses.
For of the realization of above-mentioned principle in application facet, generally all be to use the transparent flat material, preferred tough and tensile firmly transparent PET thin-film material is in conjunction with certain transparent connection material resin, the suspension of encapsulation magnetic-particle display material, and be the certain space of magnetic display material maintenance.The form in space suspension constitutes, and once defines for a series of patents.
Aspect magnetic display material suspension packaged type, 95115366.8 Chinese patent application book has then further described the magnetic particle gelatin microcapsules coating technology that is disperseed by mixed solvent equally.Chinese patent application 98102345.2 is by ultraviolet photocureable material, and repeatedly multiple layers of cured carries out the encapsulation of microcapsules display layer.Chinese patent application 00109809.8 has been described equally at microcapsules coating encapsulated layer, has used UV-cured resin.97116111.9 the grid wall that then requires the substrate local buckling is erected forms the magnetic display board right of a plurality of grid.Similar invention also has Chinese patent application 99801630.6, and magnetic display material suspension is encapsulated into cellular sheet material support, uses as display board.But cellular board uses the glue of PVC and not environmental protection in process of production, is difficult to test by toxicity.
Comparatively speaking, microcapsules encapsulation magnetic display material, it is easy to have technology, and the capsule gap is little, and the light refraction loss is low, is beneficial to the characteristics of display density.Application number is 00109731.8 Chinese patent application book, the use boiling point has been described greater than 150 ℃, fusing point is lower than-20 ℃ solvent as magnetic material suspension, has expanded the smooth and easy temperature range of moving about of magnetic particle, has improved board safety in utilization under different temperatures degree condition.Generally speaking, the Compositional type decentralized medium of the high boiling solvent of the decentralized medium of microcapsule writing board core use and low boiling point solvent is poisonous, volatility is high.Described solvent comprises alcohol, arene derivatives and ester type compound.But there are not clear and definite solvent for use material leakage or volatilization to human body, the particularly harm of children's health.
Summary of the invention:
The objective of the invention is to overcome the defective of prior art, provide gelatin to condense mode again, the preparation core is the white mineral oil dispersion liquid microcapsules that contain the black magnetic, use the cosmetics-stage white mineral oil as showing the magnetic carrier, avoided owing to, improved magnetic dispersion suspension stability with an organic solvent as the pollution that shows that the magnetic carrier causes.On the other hand, when board prepares, use fluorescent whitening agent to improve the demonstration contrast.
In order to solve the problems of the technologies described above; the technical solution adopted in the present invention provides a kind of novel environmental-friendly microcapsule writing board; comprise the PET film; microcapsules; protective layer glue; the skin of board is transparent PET film; the middle part is the microcapsules of parallel arrangement; in the bottom of microcapsules is protective layer glue; board moves up and down display font or figure by what the magnetic in dispersion liquid showed particle; when write on the top at magnet; magnetic shows that the face that moves upward of particle shows black; when magnet at following moving surface, magnetic shows that particle moves downward display white.
Described a kind of novel environmental-friendly microcapsule writing board, preferred tough and tensile firmly transparent PET thin-film material, in conjunction with certain transparent connection material resin, the suspension of encapsulation magnetic-particle display material, and be the certain space of magnetic display material maintenance.
Described a kind of novel environmental-friendly microcapsule writing board, the outside of its described microcapsules are microcapsule shell, and magnetic shows that particle and dispersion liquid are wrapped in the inside of microcapsule shell.
Described a kind of novel environmental-friendly microcapsule writing board, its described dispersion liquid is by the cosmetics-stage white mineral oil, 164 ℃-223 ℃ of its melting ranges.White Mineral Oil typically refers to slab oil.It is through the mineral oil behind the special deep refining.Be called for short white oil.White oil is colourless, tasteless, chemical inertness, light stability are good, does not corrode fiber textile.Basic composition is saturated hydrocarbon structure, materials such as aromatic hydrocarbon, nitrogenous, oxygen, sulphur are similar to zero.The molecular weight of white oil is usually all in 250～450 scopes.The cosmetic grade white oil is to adopt hydrogenating materials to obtain through behind the deep refining.Select for use the cosmetics-stage white mineral oil can avoid high boiling solvent commonly used and low boiling point solvent to mix when using the environmental pollution performance of solvent itself.
Described a kind of novel environmental-friendly microcapsule writing board, its white mineral oil dispersion liquid has used amide substance, as dispersion stabilizer, has obviously improved the stable dispersion effect.
Described a kind of novel environmental-friendly microcapsule writing board, its described protective layer glue is the acrylic compounds water soluble glue.
Described a kind of novel environmental-friendly microcapsule writing board, its described magnetic shows that particle is the black iron powder particle.
Described a kind of novel environmental-friendly microcapsule writing board, it has used the fluorescent whitening agent of thiophene-based, is mixed in titanium dioxide in proportion to make its black and white more obvious in the dispersion liquid.Its role is to improve the contrast that shows writing, improve display performance, improved reading effect.
A kind of environment-friendly type microcapsule writing board of the present invention, simple in structure, use the cosmetics-stage white mineral oil as showing the magnetic carrier, avoided owing to, improved magnetic dispersion suspension stability with an organic solvent as the pollution that shows that magnetic causes.The board preparation uses fluorescent whitening agent to improve the demonstration contrast.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention;
Number in the figure explanation: 1, PET film, 2, microcapsules, 3, microcapsule shell, 4, protective layer glue, 5, dispersion liquid, 6, magnetic shows particle.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing:
Below describe application of the present invention in detail with three Application Examples.
Embodiment 1
With titanium dioxide 9 grams, magnetic powder 1.6 grams, stearic amide 1 gram, White Mineral Oil 50ml pack in proportion stir in the container after, make A solution, the gelatin solution of 100ml2.5% and the gumwater of 100ml2.5% are mixed, temperature transfers to about 45 ℃, pour A solution into, treat that its back that stirs slowly adds the distilled water of 100ml, drip 10% acetic acid solution regulator solution pH to 3-4 then, below the solution-stabilized back of the capsule ice bath to 10 ℃, aqueous slkali with 10% is regulated between the pH to 7-9, add 36% formalin then, after treating that its curing is stable, washing, filtration obtains stable magnetic microcapsules particle, and the solution of at last these particles being put into formaldehyde stirs, and its remaining formaldehyde is fully removed, just make microcapsules, with capsule and the mixed clear PET film surface of evenly coating of glue, with same or similar thin-film package covering, formed microcapsule writing board then.
Write by magnetic pen, board shows stable font or clear picture clearly, and the font of demonstration or image can be eliminated by the magnetic stripe of board back, and this product warp in the sixth of the twelve Earthly Branches is by multiple test, forming a kind of is the environmental protection product of health again, and can any injury not arranged to human body.
Embodiment 2
On the basis of embodiment 1, fluorescent whitening agent is added in the above-mentioned core, fully stir the microcapsule writing board of making, increased and write black white contrast, make writing more clear, mellow and full, increased the visual effect improvement.
Embodiment 3
On the basis of embodiment 1; stearic amide is changed into anti-settling agent 301 or other anti-hypostasis matter such as silicone oil or Span80; use the board magnetic-particle of stearic amide to distribute relatively evenly, stablize; and use the board instability of other anti-settling agent; dispersion effect is undesirable; the particle activity is slow, and writing removes difficulties.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (2)
1. novel environmental-friendly microcapsule writing board; comprise PET film (1), microcapsules (2), protective layer glue (4); it is characterized in that: the skin of board is clear PET film (1), and the middle part is the microcapsules (2) of parallel arrangement, is protective layer glue (4) in the bottom of microcapsules (2).
2. a kind of novel environmental-friendly microcapsule writing board as claimed in claim 1 is characterized in that: the outside of described microcapsules (2) is microcapsule shell (3), and magnetic shows that particle (6) and dispersion liquid (5) are wrapped in the inside of microcapsule shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010266783XA CN101927642A (en) | 2010-08-30 | 2010-08-30 | Novel environmental-friendly microcapsule writing board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010266783XA CN101927642A (en) | 2010-08-30 | 2010-08-30 | Novel environmental-friendly microcapsule writing board |
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| Publication Number | Publication Date |
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| CN101927642A true CN101927642A (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010266783XA Pending CN101927642A (en) | 2010-08-30 | 2010-08-30 | Novel environmental-friendly microcapsule writing board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555611A (en) * | 2011-12-30 | 2012-07-11 | 浙江鼎昇新材料科技有限公司 | Display membrane for wordpad and production process thereof |
| CN105730082A (en) * | 2016-02-29 | 2016-07-06 | 东莞中世拓实业有限公司 | Microcapsule magnetic writing board and preparation method thereof |
-
2010
- 2010-08-30 CN CN201010266783XA patent/CN101927642A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555611A (en) * | 2011-12-30 | 2012-07-11 | 浙江鼎昇新材料科技有限公司 | Display membrane for wordpad and production process thereof |
| CN105730082A (en) * | 2016-02-29 | 2016-07-06 | 东莞中世拓实业有限公司 | Microcapsule magnetic writing board and preparation method thereof |
| CN105730082B (en) * | 2016-02-29 | 2018-08-03 | 东莞中世拓实业有限公司 | A kind of micro-capsulated magnetic board |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101229 |