Method for printing and processing front and back surfaces of black opaque PET (Polyethylene Terephthalate) with adhesive

Abstract

The invention discloses a printing processing method of black opaque PET (polyethylene terephthalate) front and back surfaces with glue, which comprises the following steps: S1, selecting a black opaque PET glue surface with backing paper, and stripping the backing paper on the black opaque PET glue surface in advance by using a die-cutting machine; s2, a transparent original film material with the width of 15 mm is selected to be attached to the edge of the black opaque PET adhesive face in the S1, the transparent original film material and the black opaque PET adhesive face are attached by 5 mm, and the other 10 mm of the transparent original film material extends to the edge of the black opaque PET adhesive face. A transparent original film material extends out of the edge of the black non-transparent PET glue face to conduct front and back face alignment point printing, the alignment condition of the front face and the back face can be monitored in real time, then the problem that the front face and the back face of the black non-transparent PET glue face cannot be accurately aligned in the machine operation process can be effectively solved, defective products are reduced, and the production efficiency is improved. Therefore, production cost is guaranteed, and use requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of printing and processing, in particular to a printing and processing method for the front and back surfaces of a black opaque PET with self-adhesive. Background Art

[0002] Conventional materials currently on the market are printed on both sides, usually for some transparent materials, or relatively thin white materials. A light source is placed on the back of the material. The light source penetrates the material while the printed content on the back of the material can be seen. Then the printed content positioning point on the front is aligned with the printed content alignment point on the back to achieve the requirement of accurate alignment of the printed graphics on the front and back. However, black opaque materials cannot be penetrated by the back light source, so the printed content on the front cannot be aligned with the printed content on the back, and the processing accuracy and requirements of the product cannot be achieved, resulting in a reduction in product yield and affecting production costs. For this reason, the present application proposes a printing and processing method for the front and back of black opaque self-adhesive PET. Summary of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a printing processing method for the front and back sides of black opaque self-adhesive PET.

[0004] The present invention provides a printing method for the front and back surfaces of a black opaque self-adhesive PET, comprising the following steps:

[0005] S1: Select a black opaque PET adhesive surface with a backing paper, and use a die-cutting machine to pre-peel off the backing paper on the black opaque PET adhesive surface;

[0006] S2: Select a 15mm wide transparent original film material and stick it on the edge of the black opaque PET adhesive surface in S1. The transparent original film material and the black opaque PET adhesive surface overlap by 5mm, and the other 10mm extends to the edge of the black opaque PET adhesive surface.

[0007] S3: Cover the exposed glue part of the black opaque PET adhesive surface and the exposed glue part of the transparent original film material with the same 0.025mm thick single-sided release film to ensure that no glue is exposed, and then roll the entire material into a roll;

[0008] S4: Put the roll obtained in S3 on the printing machine to prepare for unrolling and printing. Before printing, tear off the 0.025mm thick single-sided release film, print the reverse alignment point pattern at the edge of the transparent original film material where the glue is exposed, turn the transparent original film material over after printing, and then print the front alignment point pattern, and the front alignment point pattern is also printed on the transparent original film material with a width of 10mm at the edge. At this time, the alignment points of the front and back sides are both displayed at the position with a width of 10mm on the edge of the transparent original film material, so that the alignment conditions of the front and back sides can be monitored in real time;

[0009] S5: The 0.025 mm thick single-sided release film peeled off before printing is returned to the glue exposure position through the guide roller, and then rolled up to enter the die-cutting process.

[0010] Preferably, in S3, the width of the 0.025 mm thick single-sided release film = the width of the black opaque PET adhesive surface + the width of the transparent original film material - 5 mm.

[0011] Preferably, in S2, the thickness of the transparent original film material is 0.025 mm.

[0012] Preferably, in S2, the material of the transparent original film material is a transparent PFT material.

[0013] Preferably, in S4, the transparent original film material is turned over by a paper turning stand.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention extends a transparent original film material on the edge of the black opaque PET adhesive surface for front and back side alignment printing, so that the alignment of the front and back sides can be monitored in real time, thereby effectively solving the problem that the front and back sides of the black opaque PET adhesive surface cannot be accurately aligned during machine operation, reducing the generation of defective products, thereby ensuring production costs and meeting usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention provides a top view schematic diagram of the lamination state of a black opaque PET adhesive surface, a transparent original film material and a single-sided release film in a printing processing method for the front and back surfaces of a black opaque self-adhesive PET proposed by the present invention.

[0017] In the figure: 100, black opaque PET adhesive surface; 200, single-sided release film; 300, transparent original film material. DETAILED DESCRIPTION

[0018] The present invention will be further explained below in conjunction with specific embodiments.

[0019] Example

[0020] Reference Figure 1 This embodiment proposes a printing method for the front and back sides of a black opaque self-adhesive PET, comprising the following steps:

[0021] S1: Select a black opaque PET adhesive surface 100 with a backing paper, and use a die-cutting machine to pre-peel off the backing paper on the black opaque PET adhesive surface 100;

[0022] S2: Select a transparent original film material 300 with a width of 15 mm and stick it on the edge of the black opaque PET adhesive surface 100 in S1. The transparent original film material 300 and the black opaque PET adhesive surface 100 overlap for 5 mm, and the other 10 mm extends to the edge of the black opaque PET adhesive surface 100. The thickness of the transparent original film material 300 is 0.025 mm, and the material of the transparent original film material 300 is transparent PFT material.

[0023] S3: Cover the exposed glue part of the black opaque PET adhesive surface 100 and the exposed glue part of the transparent original film material 300 with the same 0.025mm thick single-sided release film 200 to ensure that no glue is exposed, and then roll the whole material into a roll, wherein the width of the 0.025mm thick single-sided release film 200 = the width of the black opaque PET adhesive surface 100 + the width of the transparent original film material 300 - 5mm;

[0024] S4: Put the roll obtained in S3 on the printing machine to prepare for unrolling and printing. Before printing, tear off the 0.025mm thick single-sided release film 200, print the reverse alignment point pattern at the edge of the transparent original film material 300 where the glue is exposed, and after printing, turn the transparent original film material 300 over by a paper turning rack, and then print the front alignment point pattern. The front alignment point pattern is also printed on the transparent original film material 300 with a width of 10mm at the edge. At this time, the alignment points of the front and back sides are both displayed at the position with a width of 10mm on the edge of the transparent original film material 300, so that the alignment conditions of the front and back sides can be monitored in real time;

[0025] S5: The 0.025 mm thick single-sided release film 200 peeled off before printing is passed through a guide roller and then returned to the glue-exposed position, and then rolled up to enter the die-cutting process;

[0026] This embodiment extends a transparent original film material 300 from the edge of the black opaque PET adhesive surface 100 for printing on the front and back surfaces, so that the alignment of the front and back surfaces can be monitored in real time, thereby effectively solving the problem that the front and back surfaces of the black opaque PET adhesive surface 100 cannot be accurately aligned during the operation of the machine, reducing the generation of defective products, thereby ensuring production costs, meeting usage requirements, and greatly reducing the probability of customer complaints.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A printing method for the front and back of black opaque self-adhesive PET, characterized in that: The following steps are involved: S1: Select a black opaque PET adhesive surface (100) with a backing paper, and use a die-cutting machine to pre-peel off the backing paper on the black opaque PET adhesive surface (100); S2: Select a transparent original film material (300) with a width of 15 mm and stick it on the edge of the black opaque PET adhesive surface (100) in S1, the transparent original film material (300) and the black opaque PET adhesive surface (100) overlap 5 mm, and the other 10 mm extends to the edge of the black opaque PET adhesive surface (100); S3: Cover the exposed glue part of the black opaque PET glue surface (100) and the exposed glue part of the transparent original film material (300) with a single-sided release film (200) with a thickness of 0.025 mm to ensure that no glue is exposed, and then roll up the entire material; S4: The roll obtained in S3 is placed on a printing machine for unrolling and printing. Before printing, the 0.025 mm thick single-sided release film (200) is torn off, and a reverse alignment point pattern is printed at the edge of the transparent original film material (300) where the glue is exposed. After printing, the transparent original film material (300) is turned over, and a front alignment point pattern is printed. The front alignment point pattern is also printed on the transparent original film material (300) with a width of 10 mm at the edge. At this time, the alignment points on the front and back sides are both displayed at a position with a width of 10 mm on the upper edge of the transparent original film material (300); S5: The 0.025 mm thick single-sided release film (200) peeled off before printing is passed through a guide roller and then returned to the glue-exposed position, and then rolled up to enter the die-cutting process.

2. The printing method for the front and back surfaces of a black opaque self-adhesive PET according to claim 1, characterized in that: In S3, the width of the 0.025 mm thick single-sided release film (200) = the width of the black opaque PET adhesive surface (100) + the width of the transparent original film material (300) - 5 mm.

3. The printing method for the front and back surfaces of a black opaque self-adhesive PET according to claim 1, characterized in that: In the above-mentioned S2, the thickness of the transparent original film material (300) is 0.025 mm.

4. The printing method for the front and back surfaces of a black opaque self-adhesive PET according to claim 1, characterized in that: In the above-mentioned S2, the material of the transparent original film material (300) is a transparent PFT material.

5. The printing method for the front and back surfaces of a black opaque self-adhesive PET according to claim 1, characterized in that: In the above-mentioned S4, the transparent original film material (300) is turned over by a paper turning stand.

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