CN213652345U - Film for three-dimensional printing - Google Patents
Film for three-dimensional printing Download PDFInfo
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- CN213652345U CN213652345U CN202022087549.2U CN202022087549U CN213652345U CN 213652345 U CN213652345 U CN 213652345U CN 202022087549 U CN202022087549 U CN 202022087549U CN 213652345 U CN213652345 U CN 213652345U
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Abstract
The utility model discloses a three-dimensional printing film. The three-dimensional printing film comprises a base layer, a foaming layer and an ink absorption coating which are sequentially stacked, wherein the ink absorption coating is used for absorbing printing ink. When the three-dimensional printing film is used for three-dimensional printing, patterns with various colors can be directly printed on the ink absorption coating by using printing ink, then the foaming layer is expanded by heating, or the foaming layer is expanded by heating firstly, then the patterns with various colors are printed on the ink absorption coating on the expanded foaming layer by using the printing ink, and the ink absorption coating can absorb the printing ink and is dried and shaped, so that the expansion of the foaming layer is prevented from being influenced by the printing ink, and the patterns with various colors and three-dimensional effects are obtained. The three-dimensional printing film can be expanded in application of Braille printing, and can be used for printing on mobile phone shells, three-dimensional trademark printing and the like.
Description
Technical Field
The utility model belongs to the technical field of the printing consumables technique and specifically relates to a three-dimensional printing film is related to.
Background
With the development of science and technology, braille printers appear in the field of vision of people. The existing three-dimensional printing technology can print three-dimensional patterns on specific printing paper, and utilizes the principle of realizing high-precision heating and printing by a precisely controlled thermal head to process different temperatures of different positions of the paper during printing so as to be heated and expanded into the three-dimensional patterns which are required in advance. The three-dimensional printing technology is mainly characterized in that the foaming microspheres are dispersed into a special polymer connecting material, and other raw materials are added to prepare the microsphere foaming coating, and the microsphere foaming coating has the specific performance of the foaming microspheres. The microsphere foaming coating can be printed on printing materials such as paper, textiles and the like by a screen printing method to form a foaming layer, the foaming layer is dried at low temperature and then heated to 80-140 ℃, a thermoplastic shell of foaming microspheres in the foaming layer is softened after a few seconds, and gas in the shell rapidly expands to dozens of times of the gas in the shell, so that printed pictures and texts show a three-dimensional effect.
However, although the existing three-dimensional printing technology can print a three-dimensional pattern effect, the three-dimensional printing paper on the market only has the base color of the three-dimensional printing paper after being printed.
SUMMERY OF THE UTILITY MODEL
In view of this, it is necessary to provide a film for three-dimensional printing that can solve the above problems.
The utility model provides a three-dimensional printing is with film, is including basic unit, foaming layer and the blotting coating that stacks gradually, the foaming layer is used for expanding after being heated, the blotting coating is used for absorbing printing ink.
When the three-dimensional printing film is used for three-dimensional printing, patterns with various colors can be directly printed on the ink absorption coating by using printing ink, then the foaming layer is expanded by heating, or the foaming layer is expanded by heating firstly, then the patterns with various colors are printed on the ink absorption coating on the expanded foaming layer by using the printing ink, and the ink absorption coating can absorb the printing ink and is dried and shaped, so that the expansion of the foaming layer is prevented from being influenced by the printing ink, and the patterns with various colors and three-dimensional effects are obtained.
Compared with the traditional three-dimensional printing paper, the three-dimensional printing film can be used for three-dimensionally printing patterns with various colors with three-dimensional effects, so that the three-dimensional printed product is more attractive and more practical.
The three-dimensional printing film can be expanded in application of Braille printing, and can be used for printing on mobile phone shells, three-dimensional trademark printing and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Wherein:
fig. 1 is a schematic structural view of a three-dimensional printing film according to an embodiment.
Fig. 2 is a flowchart of a method of manufacturing the film for three-dimensional printing shown in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The three-dimensional printing film according to one embodiment shown in fig. 1 includes a base layer 10, a foam layer 20, and an ink-absorbing coating layer 30, which are sequentially stacked, wherein the foam layer 20 is configured to expand upon heating, and the ink-absorbing coating layer 30 is configured to absorb printing ink.
When the three-dimensional printing film is used for three-dimensional printing, patterns of various colors can be directly printed on the ink-absorbing coating 30 by using printing ink, then the foaming layer 20 is expanded by heating, or the foaming layer 20 is expanded by heating firstly, then the patterns of various colors are printed on the ink-absorbing coating 30 on the expanded foaming layer 20 by using the printing ink, and the ink-absorbing coating 30 can absorb the printing ink and is dried and shaped, so that the influence of the printing ink on the expansion of the foaming layer 20 is avoided, and the patterns of various colors with three-dimensional effect are obtained.
Compared with the traditional three-dimensional printing paper, the three-dimensional printing film can be used for three-dimensionally printing patterns with various colors with three-dimensional effects, so that the three-dimensional printed product is more attractive and more practical.
The base layer 10 may be a PET film, a PI film, a TPU film, a PVC film, etc.
Preferably, the thickness of the base layer 10 may be 50 μm to 200 μm.
Generally, the material of the ink-receptive coating 30 includes an ink-receptive filler and a binder.
The ink absorption filler is used for rapidly absorbing the printing ink and drying and shaping, so that the printing ink is prevented from influencing the foaming layer 20, and the ink absorption is stable.
The adhesive is used for adhering the ink absorption filler to the foaming layer 20, so that the adsorption performance of the ink absorption filler is improved, and the ink absorption filler is not easy to fall off.
Preferably, the ink-absorbing coating 30 comprises, by mass, 10 to 15 parts of ink-absorbing filler and 20 to 30 parts of adhesive.
In the present embodiment, the ink absorbing filler is selected from at least one of silica particles and alumina particles, and the particle diameter of the ink absorbing filler is 2 μm to 10 μm.
That is, the ink receptive coating 30 may be a coating of silica particles or a coating of alumina particles.
The silica particles and the alumina particles have better ink absorption characteristics, can quickly absorb printing ink, and are dried and shaped.
Preferably, the adhesive comprises a modified waterborne acrylic and a waterborne polyurethane.
In the present embodiment, the binder is a binder having a mass ratio of 3: 7 modified aqueous acrylic acid and aqueous polyurethane.
Preferably, the ink-absorbing coating 30 further comprises 2 to 5 parts by weight of an ink-absorbing auxiliary agent.
The ink absorption aid can further improve the coating process and meet the requirements of printing performance and other physical properties of paper.
The ink absorption auxiliary agent comprises at least one of pigment dispersing agent, defoaming agent, cationic color fixing agent, wetting agent, viscosity regulator, surfactant and antioxidant.
Specifically, the pigment dispersing agent can be amine salt solution of polybasic carboxylic acid ester, the defoaming agent can be modified polyether, the cationic color fixing agent can be poly dimethyl diallyl ammonium chloride, the wetting agent can be sodium isopropyl naphthalene sulfonate, the viscosity regulator can be BYK-402, the surfactant can be linoleic acid or 2, 3-hydroxypropyl ester, and the antioxidant can be a polymerization hindered phenol/thioester mixture.
Specifically, in a particularly preferred embodiment, the material of the ink-receptive coating 30 includes, in parts by mass, 6 parts of an ink-receptive filler, 12 parts of a binder, and 1.5 parts of an ink-receptive auxiliary agent.
Preferably, the ink-receptive coating 30 may have a thickness of 30 μm to 60 μm.
In the present embodiment, the material of the foamed layer 20 includes, by mass, 10 to 20 parts of a foaming agent, 50 to 70 parts of a resin, and 8 to 18 parts of a foaming aid.
Specifically, the foaming agent can be expanded microspheres, and the resin can be waterborne acrylic resin or waterborne polyurethane.
The foaming auxiliary agent comprises at least one of a dispersing agent, a surfactant and a wetting agent, wherein the dispersing agent can be seloco 7135W, the surfactant can be linoleic acid or 2, 3-hydroxypropyl, and the wetting agent can be sodium isopropyl naphthalene sulfonate.
Specifically, the foaming auxiliary agent 8-18 parts comprises dispersing agent 5-10 parts, surfactant 2-5 parts and wetting agent 1-3 parts.
When the foaming layer 20 is heated to foam and expand, the heated place expands, the place which does not reach the temperature does not expand, the temperature sensing has an obvious boundary point, and the heating expansion is fast and stable, so that the printed pattern has a three-dimensional effect.
In general, foamed layer 20 can expand at 80 ℃ to 140 ℃.
In this application, the raised pattern that shows after foaming layer 20 is heated foaming inflation is unanimous with the pattern that the computer was predetermine.
Preferably, the thickness of the foamed layer 20 may be 50 μm to 100 μm.
In the application, the three-layer structure of the base layer 10, the foaming layer 20 and the ink-absorbing coating 30 are not affected each other, and the ink-absorbing coating 30 is still laminated on the foaming layer 20 after the foaming layer 20 expands.
The three-dimensional printing film overcomes the problem of single color of three-dimensional printing (braille printer) in the prior art. The foaming layer 20 is coated on the base layer 10, so that a three-dimensional pattern with a single color and optionally changeable colors can be realized, and the ink absorption coating 30 on the foaming layer 20 ensures the adsorption performance and the quick drying performance of the ink absorption coating 30 on the water-based ink. The foaming temperature of the foamed layer 20 is low, which is because the heat resistance of a film such as PET is 150 ° or more, which affects the film layer. Meanwhile, the lower foaming temperature can better control foaming expansion. The heat transfer to the foamed layer is lost and the foaming temperature is too high, the higher the temperature needs to be preset.
The three-dimensional printing film can use common PET as a base layer 10, and a foaming layer 20 and an ink absorption coating layer 30 are sequentially coated on the common PET, so that the three-dimensional printing film can achieve the three-dimensional effect of the original Braille printing paper by means of a Braille printer, can be colored by using water-based ink by means of a common ink-jet printer, can achieve the printing effect of three-dimensional color compounding, and is relatively low in price.
The three-dimensional printing film can be expanded in application of Braille printing, and can be used for printing on mobile phone shells, three-dimensional trademark printing and the like.
The method for preparing the film for three-dimensional printing according to one embodiment shown in fig. 2 includes the following steps:
s10, providing the base layer 10.
And S20, preparing a foaming coating, uniformly coating the foaming coating on the base layer 10, and drying to obtain the foaming layer 20.
The foamed layer 20 is adapted to expand upon heating.
Preferably, in S20, the drying operation is 75 ℃.
Preferably, in S20, the operation of formulating the foaming paint includes the following steps: according to the mass parts, 10-20 parts of foaming agent, 50-70 parts of resin, 5-10 parts of dispersing agent, 2-5 parts of surfactant, 1-3 parts of wetting agent and 5-10 parts of water are mixed uniformly to obtain the foaming coating.
S30, preparing an ink-absorbing coating, uniformly coating the ink-absorbing coating on the foaming layer 20, and drying to obtain the ink-absorbing coating 30.
The ink receptive coating 30 is used to absorb the printing ink.
Preferably, in S30, the drying operation is 75 ℃.
Preferably, in S30, the operation of formulating the ink-receptive coating includes the steps of:
uniformly mixing 10-15 parts of ink absorption filler, 2-5 parts of ink absorption auxiliary agent and 40-50 parts of water according to the mass parts to obtain a first component;
uniformly mixing the modified water-based acrylic emulsion with the mass concentration of 30-40% and the water-based polyurethane solution with the mass concentration of 40-50% to obtain a second component; and
uniformly mixing the first component and the second component to obtain the ink-absorbing coating, wherein the mass ratio of the sum of the mass of the modified water-based acrylic acid and the water-based polyurethane to the ink-absorbing filler is 20-30: 10 to 15.
The following are specific examples.
Example 1
A PET film having a thickness of 100 μm was provided.
Selecting a foaming agent with a foaming multiple of 50 times to prepare foaming slurry, selecting silicon dioxide particles to prepare an ink-absorbing coating, uniformly coating the foaming coating on a PET film, drying at 75 ℃ to obtain a foaming layer, uniformly coating the ink-absorbing coating on the foaming layer, and drying at 75 ℃ to obtain an ink-absorbing coating 30, thereby obtaining the three-dimensional printing film.
And printing ink on the three-dimensional printing film to obtain a colorful pattern, and then printing the three-dimensional pattern in a three-dimensional mode. After the ink is printed to obtain the colorful patterns, the effect is consistent with that of a common colorful printer, and the displayed patterns are computer preset patterns. After the three-dimensional pattern is printed in a three-dimensional mode, an obvious color three-dimensional pattern can be observed, and the color three-dimensional pattern is consistent with a computer preset pattern.
And (3) carrying out a processing mode of firstly printing three-dimensional patterns on the three-dimensional printing film and then printing ink to obtain color patterns. After the three-dimensional pattern is printed in a three-dimensional mode, the three-dimensional pattern preset by the computer can be observed in a colorless mode, after the ink is printed to obtain the colorful pattern, the obvious colorful three-dimensional pattern can be observed, and the colorful three-dimensional pattern is consistent with the preset pattern of the computer.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. The film for three-dimensional printing is characterized by comprising a base layer, a foaming layer and an ink absorption coating which are sequentially stacked, wherein the foaming layer is expanded after being heated, and the ink absorption coating is used for absorbing printing ink.
2. The film for stereoscopic printing according to claim 1, wherein the base layer is a PET film, a PI film, a TPU film, or a PVC film.
3. The film for three-dimensional printing according to claim 1 or 2, wherein the thickness of the base layer is 50 μm to 200 μm.
4. The film for three-dimensional printing according to claim 1, wherein the thickness of the foamed layer is 50 μm to 100 μm.
5. The film for three-dimensional printing according to claim 1, wherein the ink-receptive coating is a silica particle coating or an alumina particle coating.
6. The film for three-dimensional printing according to claim 1 or 5, wherein the ink-receptive coating layer has a thickness of 30 to 60 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022087549.2U CN213652345U (en) | 2020-09-21 | 2020-09-21 | Film for three-dimensional printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022087549.2U CN213652345U (en) | 2020-09-21 | 2020-09-21 | Film for three-dimensional printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213652345U true CN213652345U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022087549.2U Active CN213652345U (en) | 2020-09-21 | 2020-09-21 | Film for three-dimensional printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213652345U (en) |
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2020
- 2020-09-21 CN CN202022087549.2U patent/CN213652345U/en active Active
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