KR20020076915A - A process of producing a 3d stereo flash bright color plastic sheet - Google Patents

Abstract

PURPOSE: A manufacturing method of a three-dimensional flash color plastic sheet is provided to improve the play of color and various visual effects, and to cut down expenses by increasing the productivity of the embossed plastic sheet. CONSTITUTION: Transparent soft or hard plastic sheets made of thermoplastic polyvinyl chloride, and plastic sheets(s) made of thermoplastic polyethylene film, ethylene vinyl acetate copolymer film or polyethylene vinyl acetate film are rolled or processed. A computer converts pattern according to steps of a printer and an embossing machine and extension and contraction of basic material of the plastic sheet, and designs various lines and points corresponding to indentation. The cubic effect of product is improved and clear color is displayed by showing various colors according to multiple angles. The printed point is varied according to pattern or width of indentation.

Description

A manufacturing method of three-dimensional three-dimensional flash clear colored plastic sheet {A PROCESS OF PRODUCING A 3D STEREO FLASH BRIGHT COLOR PLASTIC SHEET}

Three-dimensional stereo effect printing products have been on the market for many years, but the limitation of small-sized packaged embossing techniques is that plastic laminates are printed and embossed with checkerboard or lithographic printing plates. The process has a disadvantage in that it is impossible to mass-produce industrially and the production efficiency is low and the cost is too high.

As a method of continuous embossing, transfer printing and scrolling packaging, US Pat. No. 5,624,732 discloses a method of first printing a transfer material and then transferring the pattern to the main material by heat embossing. The method utilizes adhesion and transfer printing, which is the same for various materials, either because of the bubbles present between the plastic sheet and the attached material, or because the pattern cannot be transferred completely, or with less processing problems in elongation and contraction. Wrinkles caused by not having a heat elongation tend to be poor in productivity and stability, resulting in low pass rates.

U. S. Patent No. 5,723, 200 discloses a method for producing a product having various varying effects by using a technique of giving a visual stereoscopic effect or pressing and embossing a composite adhesive layer by rotating transparent convex lenticular printing points at specific angles to interfere with embossing points. Started.

The first object of the present invention is to provide a 3D solid and three-dimensional structure by selectively using a plain plastic sheet wrapped and wrapped in rolls made of various thermoplastic materials (PVC, EVA, PE, etc.) through plastic pressing, calendering, and T-die processes. In order to achieve the flash change color effect, a technique in which printing and embossing rolls are harmonized is used. In the past, only 2D visual effects could be achieved by printing and embossing plastic sheets, usually made of PET and PVC. The present invention has been devised for the purpose of producing innovative products having a three-dimensional layering feeling and capable of industrial mass production. The method of the present invention uses a variety of thermoplastic sheets (24 "to 76"), in which a computer-positioned pattern on the front surface is printed by lithography or gravure printing, and molding temperatures of various materials (e.g. soft PVC) The plastic sheet is embossed with a three-dimensional indentation with an embossing machine on the front or back side (depending on the effect obtained) according to 140 ° C. to 180 ° C.). The product will have 3D stereoscopic effects and different stratification, color and depth changing effects.

The present invention uses various types of thermoplastic sheets printed on the back and embossed on the front, or printed on the front and embossed on the back. Thermoplastic materials such as PVC, PE and EVA use PET material as the dielectric material between the large pre-heat roll of the embossing machine and the printing surface of the plastic sheet. Accordingly, a second object of the present invention is to enable more stable mass production by increasing the brightness of the plastic sheet, preventing the printing ink from peeling off and adhering to the preheat roll, and reducing the elongation of the plastic sheet. The invention is completely different from the technique of US Pat. No. 5,624,732.

The present invention uses the elongation of the plastic sheet according to the printing point in combination with the embossed points. This method adjusts the difference in elongation between top, bottom, left and right to produce a stereoscopic effect by generating interference between the checkered points of printing and embossing. The advantage of the method is that it is easy to combine the pattern units, and the flexible industrial mass production is possible without the difficulty of forming the boundary caused by having to rotate the printing points. The method is also completely different from the technique of US Pat. No. 5,723,200.

1 shows a cross-sectional view of a product with straight front printing and straight front embossing.

2 shows a cross sectional view of a product subjected to straight back printing and straight front embossing.

Figure 3 shows a cross-sectional view of a product with straight face-to-face printing and straight + pattern indentation design front embossing.

4 shows a cross-sectional view of a product with straight + pattern indentation design face-to-face printing and straight front embossing.

Figures 5 and 5A show cross-sectional views of products with point-to-face printing and point-to-face embossing.

FIG. 6 shows a cross-sectional view of a product with dot + pattern indentation design face-to-face printing and dot front embossing.

7 shows a cross-sectional view of a product with a 3D solid plastic skin.

8 shows a cross-sectional view of a product with a 3D three-dimensional foamed plastic skin.

<Explanation of symbols for the main parts of the drawings>

S: plastic sheet

L: indentation

C: dot printing

C1, C2, C11, and C22: Printing Colors

P1: Indentation Pitch

P2: print pitch

T: dielectric material

F: cloudy pointed indentation

K1: diameter of circular printing point

S1: Pitch of Circular Print Point

B1: paste layer

A1: floor cloth

The present invention utilizes the following four processes for manufacturing various thermoplastic plastic sheets, such as PVC, PE, etc., produced by the thermoplastic molding method, into printed and embossed transparent plastic sheets having a 3D steric effect.

(1) Process I

Features of this process relate to front side printing and front side embossing as shown in the process diagram above.

The present invention uses three types of film-like plastic sheets. The materials are thermoplastic polyvinyl chloride (hard and soft) sheets, thermoplastic polyethylene (PE) sheets, ethylenevinyl acetate copolymer (EVA) sheets or PEVA (mixture) sheets, all other types of transparent resins fall within the scope of use in this case. .

The conditions used are 0.10 mm to 1.0 mm in thickness and 24 "to 76" in width.

(A) Description of the manufacturing method of a film type plastic sheet

PVC powders, plasticizers, stabilizers and dyes are mixed in a certain proportion, and the polyvinyl chloride mixture is completely plasticized and melted through an appropriate mix-table molding machine (e.g. rolling machine), followed by controlled roll play Thermoplastic polyvinyl chloride transparent sheets (hard and soft) are prepared by obtaining a soft film plastic sheet having a desired thickness using a calender having a desired thickness (160 ° C to 240 ° C).

(B) Thermoplastic polyethylene (PE) film sheets, ethylenevinyl acetate copolymer (EVA) film sheets and PEVA (mixture) film sheets are prepared from PE granules, EVA granules or PEVA mixed granules (mixture of one or various ratios) . Pass the appropriate production machine (e.g. rolling machine, blowing machine) to completely plasticize and melt the PE granules, EVA granules or PEVA mixing rate granules, and then use a molding machine such as a T-die to have the desired thickness Soft polyethylene (PE) film sheets, ethylenevinyl acetate copolymer (EVA) film sheets and PEVA film sheets can be obtained.

(C) Description of pattern design, plate manufacturing method and manufacturing process

(a) Brief description of pattern design

The present invention uses the computer software to adjust the stretch and shrinkage of the plastic sheet required during the printing and embossing steps, depending on the desired effect of the designed product pattern. The design of the present invention can match various printed checkered dots or lines with indentations of the embossing step as desired to provide a three-dimensional and vivid color change effect with layered depths at different viewing angles. Thus, products with stable and innovative 3D effects can be obtained in mass production.

The print checkered point may vary depending on the pattern and indentation width. Generally, 60 to 200 lpi (lines per inch) is a suitable range for printing. The pitch size of the embossed indentation depends on the thickness of the plastic sheet. In general, a selection of 15 to 80 lpi is suitable for a thickness of 0.1 to 1.0 mm.

(b) Manufacturing method of printing roll

Lithographic printing or gravure printing may be used, but gravure printing may produce better effects in the process of the present invention. Briefly described as follows.

(b1) Method of producing rolls by corrosion (plate making without connecting seam conditions):

The calculated file is output to a platemaking negative film, which is wound directly onto a printed copper roll coated with the sensitive liquid, burned off by attaching the sensitive liquid, and the printing spot is molded on the copper roll with corrosion.

(b2) Method of manufacturing rolls by electric engraving (plate manufacturing method with connecting seam conditions):

Print the plate script file directly using an electric engraving machine to engrave the pattern on copper rolls.

(b3) Printing and embossing process:

Thermoplastic polyvinyl chloride (PVC) sheet or thermoplastic polyethylene (PE) sheet or ethylenevinyl acetate copolymer (EVA) by a printing press (gravure printing press, offset printing press) while passing through the printing roll (C) produced in the printing plate design process ) Print the print pattern on the front of the sheet or PEVA (mixture) sheet and then heat it with an embossing machine (e.g. the soft PVC plastic sheet is heated to 140 ° C to 180 ° C) to soften the printed thermoplastic sheet; Embossing the surface with an elongate or hemispherical convex lenticular embossing roll results in a printed and embossed transparent plastic sheet exhibiting a 3D stereoscopic effect with the same pitch of elongated or hemispherical convex lenticular indentations on the product surface. The product of the invention is obtained.

(2) process II

Features of this process relate to front side printing and front side embossing as shown in the process diagram above.

The transparent film-like plastic sheet suitable for the present invention is the same as described in Process I.

Description of pattern design, printing plate manufacturing method and manufacturing process:

(A) Pattern design is the same as that described in process I.

(B) The production of the printing roll was the same as that described in Step I.

(C) printing and embossing process

As one example of several suitable materials, thermoplastic polyvinyl chloride PVC (soft and hard) transparent plastic sheets, thermoplastic polyethylene (PE) transparent plastic sheets, ethylenevinyl acetate copolymer (EVA) transparent sheets and PEVA (mixture) transparent plastic sheets Printing machine (gravure printing machine, offset printing machine) using a surface roll material (0.1-3.0 mm thick and 24 "-76" wide) as the surface layer material and passing through a printing roll manufactured in the printing plate design process of step I above. After printing the print pattern (on the opposite side) of the PVC, PE, EVA, PEVA transparent plastic sheet by means of a combination transparent plastic film (PET, BOPP) of 0.012 to 0.075 mm thickness and 24 "to 78" width. Is used as the bottom layer material, and the embossing machine is preheated to attach the surface layer material and the bottom layer material to each other, and then the temperature is further heated to 140 ° C to 180 ° C. Printed and embossed transparent plastics exhibiting a 3D stereoscopic effect by embossing the surface with an elongated or hemispherical convex lenticular embossing roll, whereby the surface of the surface layer material has an equal pitch of elongated or hemispherical convex lenticular indentations Sheet gets

(3) process III

A feature of this process is a method of providing a 3D stereoscopic effect to the rigid plastic sheet, as shown in the flow chart above.

The present invention uses a transparent film-like plastic sheet. Examples of materials are thermoplastic polyvinyl chloride rigid plastic sheets (conditions: 0.10 mm to 3.0 mm thick, 24 "to 76" wide).

(A) PVC powder, a smaller amount of plasticizer, stabilizer and dye than this PVC powder is mixed in a certain proportion and passed through a suitable mix-table molding machine (e.g. rolling machine) to completely calcinate the polyvinyl chloride mixture. After quenching and melting, a calender with controlled gear clearance (160 ° C. to 240 ° C.) is used to obtain a rigid laminate PVC plastic sheet having the desired thickness.

(B) Description of pattern design, printing plate manufacturing method and manufacturing process:

(a) The pattern design is the same as that described in Step I.

(b) The manufacturing method of a printing roll is the same as what was described in process I.

(C) Printing and Embossing Process:

The thermoplastic polyvinyl chloride PVC transparent rigid plastic sheet is combined with a transparent plastic film (PET, BOPP) having a thickness of 0.075 mm to 0.12 mm and a width of 24 "to 78" as the bottom layer material, and an elongate or hemispherical convex lenticular embossing roll By embossing the surface using a printed and embossed transparent plastic sheet exhibiting a 3D stereoscopic effect having the same pitch of elongate or hemispherical convex lenticular indentations on the surface of the surface layer material. The bottom layer material and the surface layer material are peeled off at the same time by the peeling machine, and then wound up with a roll, or peeled off by another process, and the removed surface material is passed through the printing roll manufactured by the printing plate manufacturing design process of (B). . A printing pattern (gravure printing press, offset printing press) is passed through to print a printing pattern on the backside (opposite side) of the peeled surface layer material and to produce a printed and embossed transparent plastic sheet exhibiting the 3D stereoscopic effect which is the product of the present invention.

(4) Process IV

A feature of this process is the method of generating the 3D stereoscopic effect of the latex (epidermis) as shown in the flow chart above.

(A) The film-like plastic sheet used in the present invention is a thermoplastic polyvinyl chloride plastic sheet prepared by mixing PVC powders, plasticizers, stabilizers and dyes in a specific ratio, and the polyvinyl chloride mixture is passed through a mixing-tablet molding machine. After completely plasticizing and melting, polyvinyl chloride was adjusted to meet the required conditions of 0.10 to 0.60 mm X 24 "to 76" by adjusting the width and thickness and passing the pressing of the plastic sheet group at a temperature of 150 to 200 캜. The plastic sheet is obtained and printed by gravure printing to form the printed transparent plastic sheet as an intermediate product. In addition, the plastic sheet group winds up the polyvinyl chloride plastic sheet bottom material from the proportion mixture to provide a transparent printed plastic sheet and the bottom material wound from the plastic sheet group itself. The adhesive sheet may be attached simultaneously in the bonding step of the plastic sheet group to obtain a 3D solid PVC plastic skin product after further embossing, surface treatment and product inspection.

(B) Description of the pattern design, printing plate manufacturing, and manufacturing process of the present invention (same as step I)

(a) Printing roll manufacturing method: same as that of step I

(b) Gluing, Embossing and Surface Treatment Methods:

(b1) The thermoplastic polyvinyl chloride PVC transparent plastic sheet is printed on a gravure printing machine in the printing rolls of (a) and (b) to prepare a transparent printed plastic sheet.

(b2) In addition, thermoplastic polyvinyl chloride PVC, plasticizer, stabilizer and dye are mixed and purified in a specific ratio by a mixer and a general horsepower machine, plasticized, and then the mixture is molded (thickness, width), and plastic Attach to the adhesive bottom sheet with a sheet.

(b3) The transparent printed plastic sheet obtained from (b1) is also attached to the adhesive sheet to which PVC is already attached in (b2). In other words, the PVC layer mixed and purified prior to the plastic sheeting process must be attached after the plastic sheeting process. On the other hand, the adhesive sheet and the transparent printing plastic sheet must be completely attached at the same time in the bonding step, and the intermediate product is then molded and embossed machine (150 ° C. to 180 ° C.) having an embossing roll of selected appropriate design to match the printing roll design. Embossed with Moreover, after surface-treatment suitably, the product of this invention is obtained.

Example

The following examples are intended to further illustrate the invention, but should not be used to limit the scope of the invention.

Example 1

1.The raw PVC powder, plasticizer, stabilizer and dye are mixed by printing sheet machine and passed through a suitable mix-table molding machine (e.g. rolling machine) to completely plasticize and melt the polyvinyl chloride mixture, Using a calendar (160 ° C. to 240 ° C.) with a controlled roll clearance, a polyvinyl chloride transparent plastic sheet having a width of 74 ″ and a thickness of 0.40 mm was obtained.

2. Print on the plastic sheet with a gravure printing machine using two red and blue plates with parallel straight lines. The width of the line was 0.1-0.6 mm and the pitch of the line was 0.1-0.6 mm. The plastic sheet shrinks 1-8% after printing. Then, the intermittent straight indentation parallel to the printing surface of the plastic sheet was embossed with an embossing machine. The pitch of the linear indentation was 0.1-0.6 mm. The output speed of the printing press was 10-20 yards / minute. The temperature was adjusted at 140 ° C to 180 ° C.

3. This embodiment relates to straight line printing (monochrome or complex color) and straight indentation. After printing on the surface of the transparent plastic sheet, the printed surface was embossed. As a result, the observer was able to obtain different printing color change effects at different viewing angles, as shown in FIG.

Example 2

1. The raw PVC powder, plasticizer, stabilizer and dye are mixed in a certain proportion by the printing sheet machine, and passed through a suitable mixing-tablet molding machine (e.g. rolling machine) to completely plasticize the polyvinyl chloride mixture and melt After being made, a polyvinyl chloride transparent plastic sheet having a width of 54 " and a thickness of 0.40 mm was obtained using a calendar (160 deg. C to 240 deg. C) having a controlled roll clearance.

2. An intermittent blank straight line parallel to the printed copper roll was engraved. The pitch of the lines was about 0.1-0.6 mm. The pattern was printed on the transparent plastic sheet by a gravure printing press. The printed plastic sheet was transferred to an embossing machine to emboss intermittent straight indentations parallel to the printing surface. The pitch of the linear indentation was 0.1-0.6 mm. The output speed of the embosser was 10-20 yards / minute. The temperature was adjusted at 140 ° C to 180 ° C. The printing surface was blocked with a PET dielectric layer (thickness 0.012 to 0.075 mm) to prevent the heater of the preheat roll from being soiled by the printing ink during embossing. The PET dielectric layer was removed after embossing.

3. This embodiment relates to straight line printing (monochrome or complex color) and straight indentation. After printing on the surface of the transparent plastic sheet, the printed surface was embossed. As a result, the observer was able to obtain different printing color change effects at different viewing angles. In addition, the 3D stereoscopic effect was provided using the density of the printed straight line acting on the interference with the linear indentation.

Example 3

1. The raw PVC powder, plasticizer, stabilizer and dye are mixed in a certain proportion by the printing sheet machine and passed through a suitable mixing-tablet molding machine (e.g. rolling machine) to completely plasticize the polyvinylchloride mixture and melt After being made, a polyvinyl chloride transparent plastic sheet having a width of 74 "and a thickness of 0.40 mm was obtained using a calendar (160 to 240 DEG C) having a controlled roll clearance.

2. The plastic sheet was printed on a gravure printing machine using two red and blue plates with parallel straight lines. The width of the line was 0.1-0.6 mm and the pitch of the line was 0.1-0.6 mm. Then, the intermittent straight indentation parallel to the printing surface of the plastic sheet was embossed with an embossing machine. The pitch of the linear indentation was 0.1-0.6 mm. We designed small sand spots outside the pattern. The output speed of the embosser was 10-20 yards / minute. The temperature was adjusted at 140 ° C to 180 ° C. The printed surface was blocked with a PET dielectric layer (thickness 0.012 to 0.075 mm) to prevent the heater of the preheat roll from being soiled by the printing ink during embossing. The PET dielectric layer was removed after embossing.

3. This embodiment relates to straight line printing (monochrome or composite color) and straight embossing indentations, although the embossing indentations may vary depending on the pattern design. The printed surface was printed entirely in a solid or multicolor straight line. Embossing had a straight indentation pattern, and the observed color change effect was the same as that of Example 2. The small sand spot indentation region showed no color by reflecting light, and as a result, color change was observed in the region of the pattern indentation as shown in FIG. 3.

Example 4

1. The raw PVC powder, plasticizer, stabilizer and dye are mixed in a certain proportion by the printing sheet machine, and passed through a suitable mixing-tablet molding machine (e.g. rolling machine) to completely plasticize the polyvinyl chloride mixture and melt After being made, a polyvinyl chloride transparent plastic sheet having a width of 72 "and a thickness of 0.40 mm was obtained using a calendar (160 to 240 DEG C) having a controlled roll clearance.

2. Design patterns with three types of pitch intermittent straight indentations were designed according to different blocks. Subsequently, the design pattern was engraved on a printing roll, and the pattern was printed on a plastic sheet by a gravure printing machine. Intermittent straight indentations parallel to the printing surface of the plastic sheet were embossed with an embossing machine. The pitch of the linear indentation was 0.1-0.6 mm. We designed small sand spots outside the pattern. The output speed of the embosser was 10-20 yards / minute. The temperature was adjusted at 140 ° C to 180 ° C. The printed surface was blocked with a PET dielectric layer (thickness 0.012 to 0.075 mm) to prevent the heater of the preheat roll from being soiled by the printing ink during embossing. The PET dielectric layer was removed after embossing.

3. This embodiment relates to straight embossing indentations. The printed indentation design was used to have lines of various densities (which may be monochromatic or complex), resulting in 3D stereoscopic effects of varying depths, as shown in FIG. 4.

Example 5

1. The raw PVC powder, plasticizer, stabilizer and dye are mixed in a certain proportion by the printing sheet machine, and passed through a suitable mixing-tablet molding machine (e.g. rolling machine) to completely plasticize the polyvinyl chloride mixture and melt After being made, a polyvinyl chloride super-transparent plastic sheet was obtained which was wrapped in a roll having a width of 54 " and a thickness of 0.40 mm using a calendar having a controlled roll clearance (160 to 240 DEG C).

2. Printing: Design patterns were designed with three different types of continuity circular checkered print point blocks according to the size of the dot shape. The diameter of the circular checkered dot in the first block was 0.1 to 1.0 mm and the dot pitch was 0.03 to 0.50 mm. The size and pitch of the circular checkered dot of the second block was increased by 2-8% over the first block. The size and pitch of the circular checkered dot of the third block was 2 to 8% less than that of the first block. Subsequently, the design pattern was engraved on a printing roll, and the pattern was printed on a plastic sheet by a gravure printing machine.

3. Embossing: An embossing roll was produced having a continuous circular concave point as a whole. The diameter of the circular point was 0.1 to 1.0 mm and the pitch of the point was 0.03 to 0.5 mm. A circular concave indentation point was embossed with an embossing opposite the printing surface of the printed supertransparent plastic sheet. The output speed of the embosser was 10-20 yards / minute. The temperature was adjusted at 140 ° C to 180 ° C. The printed surface was blocked with a PET dielectric layer (thickness 0.012 to 0.075 mm) to prevent the heater of the preheat roll from being soiled by the printing ink during embossing. The PET dielectric layer was removed after embossing.

4. This example (Sample 4) obtained the 3D effect by causing interference using embossed pattern indentations, printed checkered dot pattern size, and density variations reflected by light. The shape of the checkered point may be circular, triangular, quadrilateral, rhombus, ellipse, or the like, as shown in FIGS. 5 and 5A.

Example 6

1. The raw PVC powder, plasticizer, stabilizer and dye are mixed in a certain proportion by the printing sheet machine, and passed through a suitable mixing-tablet molding machine (e.g. rolling machine) to completely plasticize the polyvinyl chloride mixture and melt After being made, a polyvinyl chloride transparent plastic sheet having a width of 54 " and a thickness of 0.40 mm was obtained using a calendar (160 deg. C to 240 deg. C) having a controlled roll clearance.

2. Printing: A design pattern with two kinds of continuity circular checkered printing point blocks was designed according to the size of the dot shape. The diameter of the circular checkered point in the first block was 0.1 to 1.0 mm and the point pitch was 0.03 to 0.50 mm. The diameter and pitch of the circular checkered dot of the second block was increased by 2 to 8% over the first block. Circular checkered dots of the two blocks were designed on the same plate, and different patterns and colors were designed on different plates. The pattern was printed on the plastic sheet by a gravure printing press.

3. Embossing: An embossing roll was produced having a continuous circular concave point as a whole. The diameter of the circular point was 0.1 to 1.0 mm and the pitch of the point was 0.03 to 0.5 mm. A circular concave indentation point was embossed with an embossing opposite the printing surface of the printed transparent plastic sheet. The output speed of the embosser was 10-20 yards / minute. The temperature was adjusted at 140 ° C to 180 ° C. The printed surface was blocked with a PET dielectric layer (thickness 0.012 to 0.075 mm) to prevent the heater of the preheat roll from being soiled by the printing ink during embossing. The PET dielectric layer was removed after embossing.

4. This example used printed embossing patterns and checkered dots. Patterns other than circular dots were printed later. Various depths of the 3D effect were obtained by varying both the size and density of the printed checkered dots reflected by light (see FIG. 6).

Example 7

1. Raw PVC powders, plasticizers, stabilizers and dyes are mixed in a specific proportion by a printing sheet machine and passed through a suitable mixing-tablet molding machine (e.g. rolling machine) to completely plasticize and melt the fluoride mixture. Thereafter, using a calender having a controlled roll clearance (150 ° C. to 200 ° C.), a polyvinyl chloride transparent plastic sheet wrapped and wrapped in a roll 57 mm wide and 0.20 mm thick was obtained.

2. Printing: A design pattern with continuity circular checkered printing point block C1 was designed. The diameter of the printed circular checkered block was K1, and the pitch of the printed circular checkered block was S1. The size of the circular checkered dot in the first block was 0.1 to 1.0 mm and the point pitch was 0.03 to 0.50 mm. The size and pitch of the circular checkered dot of the second block was increased by 2-8% over the first block. The size and pitch of the circular checkered dot of the third block was 2 to 8% less than that of the first block. Subsequently, the design pattern was engraved on a printing roll, and the pattern was printed on a transparent plastic sheet by a gravure printing machine.

3. Attachment, embossing and surface treatment: Raw PVC powders, plasticizers, stabilizers and dyes are mixed in a specific proportion by printing sheet machine and passed through a suitable mix-table molding machine to produce 0.20 mm X 57 ", 58 PHR to 62 PHR. The plastic sheet (plastic skin bottom layer F1) was wound by a plastic machine at a temperature between 150 ° C. and 180 ° C. At the same time, the plastic skin bottom layer F1, pasted (paste layer B1) paste cloth (bottom cloth A1) and the printed transparent plastic The sheets are attached together, rolled up, embossed with an embossing machine at 150 ° C. to 160 ° C., then treated with a surface treatment agent using an appropriate luminescent surface treatment agent and 100 mesh treatment rolls, and adhered to the surface of the product for 3D stereoscopic printing. A high quality PVC plastic cuticle product was obtained.

Example 8

1. Raw PVC powders, plasticizers, stabilizers and dyes were mixed in a specific proportion by a printing sheet machine and the impurities were filtered through an appropriate mixed-purification filter rolling machine. After the polyvinyl chloride mixture was completely plasticized and melted, the packaged polyvinyl chloride transparent plastic sheet was wound using a calender with controlled roll clearance (150 ° C. to 200 ° C.) and rolled into a roll 57 mm wide and 0.20 mm thick. Got it.

2. Printing: A design pattern with continuity circular checkered printing point block C1 was designed. The diameter of the printed circular checkered block was K1, and the pitch of the printed circular checkered block was S1. The size of the circular checkered dot in the first block was 0.1 to 1.0 mm. The point pitch was 0.03 to 0.50 mm. The size and pitch of the circular checkered dot of the second block was increased by 2-8% over the first block. The circular checkerboard size and pitch of the third block was 2 to 8% less than that of the first block. Subsequently, the design pattern was engraved on a printing roll, and the pattern was printed on the transparent plastic sheet by a gravure printing machine.

3. Attachment, embossing and surface treatment:

(a) Raw PVC powders, plasticizers, stabilizers, blowing agents and dyes were mixed in a specific proportion by a printing sheet machine and passed through a suitable mixing-tablet molding machine to produce 0.35 mm X 57.5 ", 50 PHR to 100 PHR plastic sheets ( The latex skin bottom layer (foaming layer) F1) was wound by a plastic sheet group at a temperature of 140 ° C to 175 ° C, and then attached to a paste cloth (floor fabric A1) pasted in the attaching step of the plastic sheet group (bottom fabric A1) The product (F2 + B1 + A1 layer in Figure 8) was obtained.

(b) In addition, the raw PVC powder, plasticizer, stabilizer and dye were mixed at a specific ratio by a printing sheet machine, and passed through a mixer and a plastic sheet group to produce 0.20 mm X 57 ", 40 PHR to 100 PHR plastic sheets (latex The epidermal bottom layer (foaming layer) F1) was wound by a plastic sheet group at a temperature of 150 ° C. to 180 ° C., and then simultaneously attached to the intermediate product obtained from the plastic sheet group and the printed transparent plastic sheet in (a) to wind up the intermediate product. (F1 + F2 + B1 + A1 layers in FIG. 8).

(c) in order to increase the thickness of the product and improve the feel, transfer the intermediate product from (b) to the foamer and decompose the blowing agent of the intermediate product layer obtained from (a) with nitrogen gas at 190 ° C to 250 ° C, It was embossed in the step after a foaming machine. The surface structure of the embossing roll used was 0.1-1.0 mm in diameter of the embossing point, and pitch of 0.03-0.50 mm of embossing point P1. In addition, by treating the surface with a surface treatment agent using a 100-mesh treatment roll and attaching to the surface of the product, a 3D three-dimensional printed high quality PVC foamed latex skin product was obtained (FIG. 8).

As described above, according to the present invention, the 3D three-dimensional printing embossed plastic sheet can be mass-produced, which enables efficient production at a more economical cost.

Claims (8)

Rolling or processing thermoplastic polyvinyl chloride (PVC) transparent soft or rigid plastic sheets, thermoplastic polyethylene (PE) film type plastic sheets, ethylenevinyl acetate copolymer (EVA) film type plastic sheets and PEVA (mixture) film type plastic sheets Indentation of the embossing step by using a computer to switch patterns according to the elongation and shrinkage (1 to 8%) of the base material of the printing press, the embossing machine and the plastic sheet, and to design various checkered print points or lines under various conditions In combination with a multi-dimensional color observed from different angles to give a product with three-dimensional and sharp color effects, wherein the checkered print points can vary differently depending on the width of the pattern and indentation (generally between 60 and 200 lpi (Lines per inch) is a suitable range for printing), embossing The unit pitch of the traces in accordance with the thickness of the plastic sheet other (typically, 0.1 to 1.0 ㎜ range Im in order to blend 15 to 120 lpi) 3D (Dimension) The process for producing a three-dimensional flash clear colored plastic sheet (skin). The process of claim 1, wherein a product having the same effect can be obtained by a front printing and a front embossing process, which prints parallel straight lines on the plastic sheet using an offset or gravure printing machine, where printing The width of the line is 0.1 to 0.6 mm, the pitch of the printed line is 0.1 to 0.6 mm, and the plastic sheet shrinks 1 to 8% from left to right after printing), embossing intermittent straight line parallel to the printing surface of the plastic sheet Whereby the pitch of the straight indentation is 0.1 to 0.6 mm, the output speed of the embossing machine is 10 to 20 yards / minute, and the temperature is controlled at 140 ° C to 180 ° C), and then printed on the transparent plastic sheet surface When embossing on a surface, 3D (dimensions) can be obtained with the effect of the printing color changing when viewed from different angles by linear printing and straight indentation. A) Three-dimensional freshly colored plastic sheet (epidermal) manufacturing method. The method according to claim 1, wherein a product having the same effect can be obtained by front printing and back pressing processes, which design three different continuity printing pattern checkered dot blocks according to the checkered dot size of the design pattern. (At this time, the diameter of the pattern checkered dot of the first block is 0.1 to 1.0 mm, the pitch of the dot is 0.03 to 0.50 mm, the diameter and pitch of the pattern checkered dot of the second block is 2 than the first block To 8% increased, the diameter and pitch of the pattern checkered dot of the third block is reduced by 2 to 8% than the first block), the design pattern is engraved on a printing roll, the pattern is printed on a plastic sheet, and embossed Transparent plastics printed using an embossing roll with a generally concave circular concave point of the group, wherein the diameter of the circular concave point is 0.1 to 1.0 mm and the pitch is 0.03 to 0.5 mm By embossing a circular concave indentation point across the printing surface of the stick sheet (wherein the output speed of the embossing machine is 10-20 yards / minute and the temperature is adjusted from 140 ° C to 180 ° C) to obtain the product and preheat Of the 3D (dimensional) three-dimensional flashy clear colored plastic sheet (epidermal) which blocks the printing surface with a PET dielectric layer (thickness 0.012 to 0.075 mm) and removes after embossing to prevent the heater of the roll from being soiled by the printing ink during embossing. Manufacturing method. The method according to claim 1, wherein a product having the same effect can be obtained by front printing and front embossing process, which design three different continuity printing pattern checkered dot blocks according to the checkered dot size of the design pattern. (At this time, the diameter of the pattern checkered dot of the first block is 0.1 to 1.0 mm, the pitch of the dot is 0.03 to 0.50 mm, the diameter and pitch of the pattern checkered dot of the second block is 2 than the first block To 8% increased, the diameter and pitch of the pattern checkered dot of the third block is reduced by 2 to 8% than the first block), the design pattern is engraved on a printing roll, the pattern is printed on a plastic sheet, and embossed Transparent plastics printed using an embossing roll with a generally concave circular concave point of the group, wherein the diameter of the circular concave point is 0.1 to 1.0 mm and the pitch is 0.03 to 0.5 mm 3D (dimensional) solid to obtain the product by embossing the circular concave indentation point on the printing surface of the stick sheet, in which the output speed of the embossing machine is 10 to 20 yards / minute and the temperature is adjusted at 140 ° C to 180 ° C Process for the manufacture of freshly colored plastic sheets (epidermis). The process according to claim 1, wherein a product having the same effect can be obtained by a front printing and a back pressing process, which uses an offset or gravure printing press to print parallel straight lines on the plastic sheet (where printing The width of the line is 0.1 to 0.6 mm, the pitch of the printed line is 0.1 to 0.6 mm, and the plastic sheet shrinks 1 to 8% from left to right after printing), intermittent parallel to the printing surface of the plastic sheet Emboss the straight line (the pitch of the straight indentation is 0.1-0.6 mm, the output speed of the embossing machine is 10-20 yards / minute, the temperature is controlled at 140-180 ° C), and the heater of the preheat roll Transparent plastic cigar, which blocks the printing surface with a PET dielectric layer (thickness 0.012 to 0.075 mm) and removes after embossing to prevent contamination by printing ink during embossing When printed on the surface and then embossed on the printing surface, 3D (dimensional) three-dimensional flash bright colored plastic sheet (cuticle), which can obtain a plastic sheet which has a printing color changing effect when viewed from various angles by linear printing and straight indentation. ) Manufacturing method. In the embossing machine, produced by the method defined in claim 1, attached to a floor cloth such as nonwoven fabric, plain fabric, vertical fabric which has been rolled by a plastic sheeting machine and then passed through a delivery rack to provide a 3D solid fresh vivid color plastic sheet. 3D stereoscopic crisp colored plastic sheeting. As the layer material, a thermoplastic polyvinyl chloride (PVC) transparent rigid plastic sheet in combination with a transparent plastic film (PET, BOPP) having a thickness of 0.012 to 0.075 mm and a width of 24 "to 78" can be used, and a strip or hemispherical convex is used. Rolling with a lenticular embossing roller, the surface of the layer material is made of 3D stereoscopic embossed transparent plastic sheet with strips or hemispherical convex indentations of similar distances, and the bottom layer material and the surface layer material are peeled off prior to rolling. 3D stereoscopic flash sharpness prepared by the method defined in claim 1, which is removed by means of a machine or by another process and obtained by printing a printing pattern with a printing machine opposite the surface layer which has been separated off to obtain a product having a 3D stereoscopic effect. Color plastic sheet. A 3D solid flash sharpened by the method defined in claim 1, wherein the plastic sheet is attached to the foamed plastic sheet in a step of attaching the plastic sheet and then transferred to a foamer at a temperature of 190 ° C to 250 ° C to decompose the blowing agent into nitrogen gas to increase the thickness of the product. Color plastic sheet.