CN1227928A - A method of producing dot or non-dot see-through film - Google Patents

Abstract

The invention discloses a method for producing a dot or non-dot perspective piece, which comprises the steps of firstly, sequentially printing or coating a plurality of layers of printing ink on a blank plastic film, drying and solidifying the printing ink to form a multicolor plastic film, combining the multicolor plastic film and a transparent base layer, and pad-printing the plurality of layers of printing ink of the multicolor plastic film on the transparent base layer in a heating and pressurizing mode; after the multicolor plastic film is subjected to first heating and pressurizing transfer printing to the transparent base layer, a piece of multicolor plastic film coating is formed; the multi-color plastic film coating is transferred and printed on the transparent base layer by heating and pressurizing for the second time, the manufactured perspective piece is seen as a pattern or a character from the front side, a picture surface consisting of dark (or transparent) dots is seen from the back side, and external scenery can be clearly seen from transparent gaps (or transparent dots).

Description

A method of producing dot or non-dot see-through film

The invention relates to a method for making a spaced dark dot see-through film on a transparent base layer.

At present, it is known that on a transparent base layer (such as: transparent film, glass, acrylic and other transparent materials) to make a transparent sheet with multi-layered screen printing dots, often due to inaccurate overprinting, the high-quality effect cannot be achieved.

Taiwan Patent "A Method for Making a New Vision and Sensory See-Through Film" (Notice No. 262435), which uses screen printing to apply transparent ink 2 (as shown in Figure 1) through the mesh 81 of the screen plate 8 On the transparent base layer 1, this transparent ink 2 is similar to the ink used for scratch-off lottery tickets. When the screen plate 8 is removed, the transparent ink 2 will produce a plurality of concave small holes 21 (as shown in FIG. 2 ). After air-drying, the first layer of dark ink 31 (as shown in Figure 3) can be coated on the transparent ink layer 2, and the second layer of light-colored ink 32 can be coated after air-drying, and the third layer of colored pattern can be applied after air-drying Ink 33, wherein the colored ink 33 is printed on a pre-designed pattern screen. After being air-dried, ink layers (ie, ink dots) of at least two or more layers of different colors will be deposited in the small holes 21. The transparent ink layer 2 can be torn off with adhesive tape at last, and then rinsed clean with a washing machine. Finally, the transparent ink layer 1 is always left behind. Lower ink dots 3 and some residual ink 22 (as shown in Figure 4).

The biggest disadvantage of this invention is that the transparent ink 2 is printed on the transparent base layer 1 through the screen printing method. After the three-color ink screen printing is completed, the transparent ink layer 2 must be torn off, but some transparent ink layers 2 are hard. It is fixed on the transparent base layer 1, so it is not easy to tear off, and there will be residual ink 22 left on the transparent base layer 1 after tearing off (as shown in Figure 4). In order to meet the quality requirements, it must be peeled off and rinsed with strong tape Machine washes residual ink 22, has increased a lot of troubles to the maker, and prolongs the working man-hour. If the residual transparent ink 22 is not completely removed, unsightly stains will be left on the transparent base layer 1, which greatly reduces the visual effect. In addition, in this invention, when the transparent ink 2 is torn off from the glass material, the ink dots 3 are easily peeled off together, so it cannot be produced on the glass material.

The inventor of the present invention aimed at the deficiencies of the above-mentioned inventions, and developed the patented technology "Multi-color overprinting makes point-to-point 100% accurate see-through film manufacturing method" (application number: 87109210, application date: June 10, 1987 Japan), the feature of this invention is: on a piece of plastic film, there are holes (holes), because the bottom surface of the plastic film has low-viscosity glue, so the plastic film after punching can be transferred and pasted on the transparent base; Print the first layer of dark ink on the top, print the second layer of light ink after drying, and then print, spray or paint other colored inks (ie pattern colors) on the second layer of ink to become the second layer of ink. Three layers of ink. After the above operations are completed and dried, the plastic film can be torn off, leaving only dot-to-dot alignment patterns on the transparent base layer with 100% accuracy. In this way, a finished see-through sheet 500 is obtained. As shown in Figure 5, by viewing from the front (outside) of the see-through sheet 500, a beautiful pattern or text consisting of a plurality of colored dots 501 can be presented, and a plurality of light-colored dots 502 set off the colored dots, while the back (inside) Viewing presents a plurality of surfaces composed of dark dots 503 (as shown in FIG. 6 ), and the external scenery can be clearly seen from the transparent gap 504 between the dots 503 and 503, so the internal sight is not hindered.

Though above-mentioned method can solve the problem of Taiwan patent 262435 (announcement number), but production cost is higher, in order to reduce cost, the inventor of the present invention has further researched effect better, the lower invention " between non-point and non-point 100% Multi-color Accurate Overprinting See-Through Film Production Method" (patent application number: 87112920, application date: August 5, 1987), the feature of this invention is to apply multiple release agents on the transparent base layer by screen printing Dots, when the release agent is dry, it can be multi-color overprinted on the transparent base layer by printing, inkjet, color painting, etc. After the overprinting is completed, it will be dried naturally or dried, and then the release agent on the transparent base layer will be peeled off. After removing, the finished product of the see-through film 600 can be obtained. As shown in FIG. 7 , viewing from the front (outside) of the see-through sheet 600 presents a beautiful pattern or text composed of colored non-screen ink 601, while light-colored non-screen dots 602 can set off colored non-screen dots. Viewing from the inside) presents a picture composed of dark non-grid dots 603 (as shown in FIG. 8 ), and the external scene can be clearly seen from the transparent dots 604, so the internal line of sight is not hindered.

The biggest difference between the above two inventions is that the see-through sheet of the first item is viewed from the back, the dots 502 are "dark", and the gap 503 between the dots is "transparent"; while the see-through sheet of the second item is made of Viewed from the back, the dot 603 is "transparent", and the gap 602 between the transparent dot and the transparent dot is "dark"; so the finished products of the two items are different.

The object of the present invention is to provide a method for manufacturing dot or non-dot see-through film which can realize the different display results of the above two inventions, simplify the production process, shorten the production time and improve the quality.

In order to achieve the above purpose, the present invention adopts the following design scheme: a method for producing dot or non-dot see-through films, firstly printing or coating multiple layers of ink on a blank plastic film, and after the ink dries, it becomes a multi-color film. The multi-color plastic film is combined with the transparent base layer, and the multi-layer ink of the multi-color plastic film is printed on the transparent base layer by heating and pressing.

After the multi-color plastic film is printed on the transparent base layer with heating and pressure for the first time, it becomes a piece of multi-color plastic film coating; the multi-color plastic film coating is printed on the transparent base layer with the second heating and pressure.

The present invention has the following advantages due to the adoption of the above design scheme:

1. The color see-through film shows a beautiful pattern or text when viewed from the front (outside), while it shows multiple dark (or transparent) dots when viewed from the back (inside), and can be clearly seen from the transparent gap (or transparent dots). Seeing the outside scene does not hinder the internal line of sight.

2. It has sun-shading effect due to the effect of dark dots (or non-dots) blocking light.

3. The colorful pattern or text can have an advertising effect, suitable for building glass curtains, indoor glass, car windshields, and car exterior advertising surfaces.

4. The method of printing on plastic film and then transfer printing to the transparent base layer is easier to handle than any known method, so it can be mass-produced quickly, shortening the process, reducing costs and improving economic benefits.

5. After pad printing, it can achieve 100% correct alignment effect, and there will be no problems such as double images or ghost images caused by errors caused by overprinting problems.

6. According to the needs of users, a picture composed of ink dots or release dots can be produced on the transparent base layer, so the present invention will not be limited to a specific embodiment.

7. The multi-color plastic film can be divided into two times to transfer the surface ink to the transparent base layer. In this way, in addition to making full use of the multi-color plastic film, it can save more than half of the cost of materials and man-hours, and avoid waste.

After the plastic film in the present invention is printed with multiple layers of ink, the ink is transferred and printed on the transparent base layer through thermal transfer printing or thermal embossing by means of pressure and heating, and can be quickly fixed.

There are at least two or three layers of ink on the transparent base layer after the transfer is completed. If viewed from the front, the colored ink on the top layer can present the pattern or text color, while the light-colored ink on the second layer can set off the colored ink on the top layer and refract the light. The color of the top layer of ink is more three-dimensional and prominent, and the dark ink of the bottom layer has the effect of light blocking and heat insulation, and is also the background layer of the top layer and the second layer of ink.

When the multi-color plastic film is thermally embossed or thermally transferred twice, the ink on the surface layer can be transferred to two transparent substrates twice, and multiple inks will appear on the transparent substrate after the first transfer printing. Dots or ink gaps, and ink gaps or ink dots appear on the transparent substrate after the second pad printing, so the results of the two pad printings before and after are different.

Embodiments of the present invention are described in detail below in conjunction with the accompanying drawings:

Fig. 1 is the schematic diagram of screen printing transparent ink on transparent base layer of known technology (Taiwan Patent-Notice No. 262435).

Fig. 2 is a cross-sectional view of the transparent base layer in Fig. 1 .

Fig. 3 is a schematic diagram of the transparent substrate in Fig. 1 after being inked.

Fig. 4 is a schematic diagram of the transparent base layer in Fig. 1 after the transparent ink is torn off.

Fig. 5 is the front view of the perspective sheet of known technology (application number: 87109210).

Fig. 6 is the back view of the perspective sheet of known technology (application number: 87109210).

Fig. 7 is the front view of the perspective sheet of known technology (application number: 87112920).

Fig. 8 is the back view of the perspective sheet of known technology (application number: 87112920).

Fig. 9 is a process diagram (1) of the multi-color plastic film of the present invention.

Fig. 10 is a cross-sectional view of the multi-color plastic film in Fig. 9 .

Fig. 11 is a process diagram (2) of the multi-color plastic film of the present invention.

Fig. 12 is a sectional view of the multi-color plastic film in Fig. 11.

Fig. 13 is a flow chart of the first pad printing of the color see-through film of the present invention.

Fig. 14 is a schematic diagram of a perspective film produced by thermal embossing according to Fig. 13 .

Fig. 15 is a schematic diagram of hot pressing of the see-through sheet following Fig. 14 .

Fig. 16 is a sectional view after the molding of the see-through sheet in Fig. 15 .

Fig. 17 is a schematic diagram of a perspective sheet made by thermal transfer printing according to Fig. 13 .

Fig. 18 is a cross-sectional perspective view of multi-color plastic film pad printing in Fig. 12 .

Fig. 19 is a front view (1) of the see-through sheet of the present invention.

Fig. 20 is a rear view of the perspective sheet of Fig. 19 .

Fig. 21 is a continuation of the flow chart of the second pad printing of the see-through sheet in Fig. 9 .

Fig. 22 is a schematic diagram of a perspective film produced by thermal embossing in Fig. 21 .

Fig. 23 is a schematic diagram of a perspective sheet produced by thermal transfer printing in Fig. 21 .

Fig. 24 is a front view (2) of the see-through sheet of the present invention.

Fig. 25 is a rear view of the perspective sheet of Fig. 24 .

Fig. 26 is a process diagram (3) of the multi-color plastic film of the present invention.

Fig. 27 is a cross-sectional view of the multi-color plastic film in Fig. 26.

Fig. 28 is a process diagram (4) of the multi-color plastic film of the present invention.

Fig. 29 is a sectional view of the multi-color plastic film in Fig. 28.

Fig. 30 is a cross-sectional view of the molding of the multi-color plastic film according to Fig. 26 after being transferred to the see-through sheet for the first time.

Fig. 31 is a cross-sectional view of the first transfer printing of the multi-color plastic film on the see-through film according to Fig. 28 .

Fig. 32 is a perspective fragmentary view after the second pad printing according to Fig. 26 .

Fig. 33 is a perspective fragmentary view after the second pad printing according to Fig. 28 .

Fig. 34 is a flow chart of heating and grilling after the see-through sheet in Fig. 13 is formed.

Fig. 35 is a flow chart of heating and grilling after the see-through sheet in Fig. 21 is formed.

Example 1

Fig. nine, Fig. ten, for the present invention manufacture colored plastic film flow chart and product sectional view, as shown in Fig. 9, Fig. 10, on the surface of plastic film 11 printing (or coating) first layer colored ink 12, in The second layer of light-colored ink 13 is printed after drying, and the third layer of dark ink 14 is printed after drying. After drying, it becomes a "multi-color plastic film" 10 with three layers of ink. The material of above-mentioned plastic film 11 is the plastic material such as PVC or OPP, and it is best to use white in the light-colored ink 13, is the best to use black in the dark-colored ink 14; Decide.

Example 2

Fig. 11 and Fig. 12 are also flow charts and sectional views of the present invention making colored plastic film, as shown in Fig. 11 and Fig. 12, compared with embodiment 1, the difference is that after printing the third layer of dark ink 14, adding Print the fourth layer of hot-melt adhesive 15 and then become the multi-color plastic film 10'. The hot-melt adhesive 15 can help the ink to be transferred to the transparent base layer of incompatible material, which will be further explained in the following description.

Example 3

As shown in FIG. 13 , it is a flow chart of manufacturing the see-through sheet of the present invention. As shown in the figure, the multi-color plastic film 10 is placed on the transparent base layer 20, and is interposed between the transparent base layer 20 and the hot stamping mold 52 of the embossing machine ( As shown in Figure 14), the transparent base layer 20 can be a transparent plastic sticker, cellulo sheet, glass, acrylic sheet, etc.; On the colored plastic film 10 (as shown in FIG. 15 ), the multi-layer inks 12-14 are simultaneously transferred onto the transparent base layer 20 through pressurized heating, so that a plurality of ink dots 40 are produced on the surface of the transparent base layer 20 (as shown in FIG. 16 ). Shown) form "color see-through sheet" 70. After the hot embossing is completed, the hot embossing mold 30 and the multi-color plastic film coating 90 are separated from the see-through sheet 70 one after another. After the ink dots 40 are dried, they are permanently fixed on the transparent base layer 20. At this time, the color distribution in the ink dots 40 is as follows: The dark ink 43 is the bottom, the light ink 42 is second, and the colored ink 41 is the top; and the shape of the dot is also not limited to the circle, and can also be square, rhombus, trapezoid or other shapes.

Example 4

The present invention can also be implemented by thermal transfer printing or hot-melt glue transfer printing in addition to the pressing method of the above-mentioned hot stamping die 30, as shown in Figure 17, the thermal transfer printing method is a letterpress thermal transfer wheel 50 and a The rollers 60 are matched up and down symmetrically, wherein the heat transfer roller 50 has a protruding pressure block 51 on the surface, and the multi-color plastic film 10 and the transparent base layer 20 are simultaneously entered from the gap between the two wheels 50, 60, through the thermal transfer of the two wheels. Rolling, so that the ink on the surface layer of the multi-color plastic film 10 is pad printed on the transparent base layer 20, so that a plurality of ink dots 40 are formed on the color see-through sheet 70. The structure of the ink dots 40 is the same as that of the previous embodiment, and will not be described in detail again. After the thermal transfer is completed, the multi-color plastic film paint 90 will be separated from the color see-through sheet 70 .

If the transparent base layer 20 in this embodiment is made of PVC material or a material compatible with ink, the ink can be directly "hot embossed or thermally transferred" onto the transparent base layer 20. If the transparent base layer 20 is made of PET glue or is not compatible with ink For compatible materials, multi-color plastic film 10' must be used, because it contains a layer of hot-melt adhesive 15 (as shown in Figure 12) on the surface of the ink, and the ink can be transferred to transparent through the hot-melt adhesive 15 On the base layer 20 , as shown in FIG. 18 , ink dots 40 are permanently fixed on the transparent base layer 20 by means of hot-melt adhesive 44 after thermal embossing or thermal transfer printing is completed.

As shown in Figure 19, it is the front of the color see-through sheet 70 of the present invention, that is, when viewing the see-through sheet 70 from the outside to the inside, it can be seen that a plurality of light-colored ink dots 42 (for example: white) are distributed, and the light-colored dots 42 and There are transparent gaps 71 between the light-colored dots 42; there are patterns or characters formed by colored ink dots 41 on some light-colored ink dots 42, and the light-colored ink dots 42 set off the colored ink dots 41 more three-dimensionally under the light refraction Prominent, thereby achieving beautification and advertising effects.

As shown in Figure 20, it is the back side of the color see-through sheet 70 of the present invention, that is, when viewing the see-through sheet 70 from the inside to the outside, you can see the distribution of a plurality of dark ink dots 43 (for example: black), which has light-blocking and heat-insulating properties. effect, but the transparent gap 71 between the dark dots 43 and the dark dots 43 can allow the eyes to see the outside scenery.

The multi-color plastic film 10, 10' becomes a multi-color plastic film coating 90 after one heat embossing or heat transfer is completed, and the multi-color plastic film coating 90 can be used again, and it only needs to cooperate with the transparent base layer 20 (As shown in Figure 21), through the thermal embossing (as shown in Figure 22) of the lithographic hot stamping mold 54 or the thermal transfer printing (as shown in Figure 23) of the lithographic thermal transfer wheel 61 and roller 60, the original The residual ink remaining on the multi-color plastic film 90 is transferred to the transparent base layer 20 to form a color see-through sheet 70'. Although the display mode of the see-through sheet 70' is different from that of the aforementioned see-through sheet 70, the effect is the same, which can be observed from Fig. 24 and Fig. 25 .

The front side of the see-through sheet 70 shown in Figure 24 can see the distribution of a plurality of transparent dots 72, and the gap between the transparent dots 72 and the transparent dots 72 is formed by the light-colored ink 42, and part of the light-colored ink 42 has the appearance of the colored ink 41. The light-colored ink 42 (for example: white) can make the colored ink 41 stand out more three-dimensionally under the refraction of light, thereby achieving beautification and advertising effects. Again, what Fig. 25 showed is the back side of see-through sheet 70', and it can be found that the gap between transparent dots 72 and transparent dots 72 is formed by dark ink 43 (for example: black), which has light-blocking and heat-insulating effects, and more A transparent dot 72 can be used for the eyes to see the external scenery.

Therefore, when the see-through sheet 70 or 70' is "externally pasted" on an automobile exterior advertisement, a building glass curtain, or a large advertising billboard, it can become a very eye-catching advertisement pattern or words when viewed from the outside, but it cannot be seen indoors (or inside the car). ) of the scene; and when viewed from the interior (or in the car), the outside scene is clearly seen through the transparent gap 71 (or transparent dot 72) because the outside is brighter than the inside.

Equally, the see-through sheet of the present invention can also be "inside attached" to indoor glass, automobile windshield, building glass curtain surface, etc., but the order of printing or coating ink on the plastic film 11 is opposite to that described in Figure 9 above. The printing process is shown in Figure 26: the first printing is dark ink 14 (see Figure 27 plastic film cross section), the second printing is light ink layer 13, and the third printing is colored ink 12. A multi-color plastic film 10 is thus completed.

If the third color ink 12 is printed and then the fourth hot-melt adhesive layer 15 is printed, the printing process is shown in FIG. 28 , and the cross-sectional structure of the completed multi-color plastic film 10 ′ is shown in FIG. 29 .

The two plastic films 10, 10' are printed on the transparent base layer 20 through thermal embossing or heat transfer printing for the first time, and ink dots 100 (as shown in Figures 30 and 31 ) will be produced on the transparent base layer 20 to form a " Inner-adhesive "color see-through sheets 80, 80', at this time, there is a transparent gap 82 between the ink dots 100 and the dots 100. Also, in the ink network dot 100 shown in Figure 31, a layer of hot-melt adhesive 104 is added compared with Figure 30, and the hot-melt adhesive 104 layer can make the ink network dot 100 fixed on the non-PVC material or the transparent base layer 20 that is incompatible with the ink superior. At this time, the black ink 103 is the top, the second is the light color ink 102, and the bottom is the colored ink 101.

If the multi-color plastic film coating 90 after the above-mentioned first pad printing is applied on the transparent base layer 20 through the second thermal embossing (or thermal transfer printing), then the internal paste color see-through sheet 80, 80' structure produced As shown in Figures 32 and 33. At this time, the dots 83 are transparent dots, and there is an ink gap 105 between the transparent dots 83 and the transparent dots 83 . Again, the ink gap 105 shown in Figure 33 has increased one deck hot-melt glue 104 compared with Figure 32, and at this moment black ink 103 is top, second is light color ink 102, and bottom is colored ink 101.

As shown in Figures 34 and 35, they are the flow charts of the first and second pad printing respectively. When the material used for the transparent base layer 20 is glass and other materials, the ink used is a special ink for glass, which is different from the printing and dyeing ink described above. Ink, but the pad printing process is exactly the same. After the pad printing is completed, a "heating and grilling" process must be added to make the ink permanently fixed on the glass material without fading. The effect of the perspective film obtained by using these two flow charts is the same as before mentioned.

Claims (14)

1. A method for producing dot or non-dot see-through films, characterized in that firstly, printing or coating multiple layers of ink on a blank plastic film, after the ink dries, becomes a multi-color plastic film, and then The multi-color plastic film is combined with the transparent base layer, and the multi-layer ink of the multi-color plastic film is printed on the transparent base layer by heating and pressing. 2. The method for producing dot or non-dot see-through film according to claim 1, characterized in that: After the multi-color plastic film is transferred to the transparent base layer by heating and pressing, it becomes a piece of multi-color plastic film coating; The multi-color plastic film paint is transferred to the transparent base layer with the second heat and pressure. 3. The method for producing dot or non-dot see-through film according to claim 1, characterized in that: in the step of printing multi-layer ink on the plastic film, the first printing of color ink and the second printing of light-color ink are respectively , The third printing dark ink. 4. The method for producing dot or non-dot see-through film according to claim 1, characterized in that: in the step of printing multi-layer ink on the plastic film, the first printing of dark ink and the second printing of light color Ink, third printing color ink. 5. The method for producing dot or non-dot see-through film according to claim 3 or 4, characterized in that: after the third printing is completed, the fourth printing of the hot-melt adhesive layer is carried out. 6. The method for producing screen-dot or non-screen-dot see-through film according to claim 1, characterized in that: the pressurized heating method is letterpress hot embossing, that is, the bottom surface of the hot stamping mold has protruding briquetting blocks for contact with multi-color plastics Thin film, transparent substrate contact. 7. The method for producing dot or non-dot see-through film according to claim 1, characterized in that: the pressurized heating method is letterpress heat transfer, that is, a heat transfer wheel cooperates with a roller, and the thermal transfer The surface of the printing wheel has a protruding pressing block to contact with the multi-color plastic film and the transparent base. 8. The method for producing dot or non-dot see-through film according to claim 2, characterized in that: the pressure heating method is lithographic hot embossing, that is, the bottom surface of the hot stamping mold is lithographically combined with multi-color plastic films, transparent Grassroots contact. 9. The method for producing dot or non-dot see-through film according to claim 2, characterized in that: the pressurized heating method is lithographic thermal transfer printing, that is, a thermal transfer wheel and a roller without protruding briquetting blocks Cooperate to contact with multi-color plastic film and transparent substrate. 10. The method for producing screen-dot or non-screen-dot see-through film according to claim 1, characterized in that: the multi-layer ink on the surface layer of the multi-color plastic film is printed on the transparent base layer in the form of dots, so that the dots are non-transparent , and the gaps between dots are transparent. 11. The method for producing dot or non-dot see-through film according to claim 2, characterized in that: the multi-layer ink of the multi-color plastic film is printed on the transparent base layer in the form of dots, so that the second printing The dots of the transparent base layer are transparent, while the gaps between the dots are non-transparent. 12. The method for producing dot or non-dot see-through film according to claim 1, characterized in that: the multi-layer ink on the surface layer of the multi-color plastic film is printed on the transparent base layer in the form of non-dot, so that the dot is transparent , while the gap between dots is opaque. 13. The method for producing dot or non-dot see-through film according to claim 2, characterized in that: the multi-layer ink of the multi-color plastic film paint is transferred on the transparent base layer in the form of non-dot, so that the second transfer The dots of the printed transparent base layer are non-transparent, and the gaps between the dots are transparent. 14. The method for producing dot or non-dot see-through film according to claim 1 or 2, characterized in that: the transparent base layer is glass, and the heating and roasting process is carried out after pad printing is completed.

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