CN101187748A - Production method of shading adhesive film - Google Patents

Abstract

The invention relates to a production method of a shading adhesive film, and provides a production method of an outer frame shading adhesive film which can reliably project concentrated light rays to a display screen. The production method of the shading adhesive film comprises the steps of firstly, carrying out primary lamination, respectively placing and fixing a release film, a double-sided adhesive tape and an auxiliary release film on each discharging shaft, then laminating a release surface of the release film with the double-sided adhesive tape, carrying out primary stamping to start a waste discharge procedure, tearing up the residual materials of the inner frame, carrying out secondary lamination, secondary stamping and secondary waste discharge procedures, cutting off the products with the torn waste materials through a shearing machine and a light sensor, and carrying out a packing procedure. The shading adhesive film is convenient for an assembler to tear the outer frame shading adhesive film and accurately paste the outer frame shading adhesive film on the periphery of the display screen, so that the assembly operation can be effectively simplified, and the production efficiency can be improved.

Description

Production method of light-shielding film

technical field

The invention relates to a light-shielding adhesive film for a liquid crystal display panel, in particular to a method for producing a light-shielding adhesive film for an outer frame of a concentrated liquid crystal display panel light source.

Background technique

At present, most high-tech electronic products are developing in the direction of lightness, lightness and shortness. Especially in terms of displays, a large number of LCD liquid crystal displays with active light emitters are used to form screen output and display rich-color images on the liquid crystal display. Since the light source is scattered in the edge area of the liquid crystal display, the light efficiency at the edge of the liquid crystal display becomes lower, making the picture in the edge area darker. At present, a light-shielding film is pasted on the outer frame of the liquid crystal display, and black ink is coated on a layer of film for light-shielding. However, the ink-coating process has the defects of uneven coloring and easy fading, which weakens the light-shielding performance and affects the product. quality.

Contents of the invention

Aiming at the problems existing in the prior art, the technical problem to be solved by the present invention is to provide a production method of an outer frame light-shielding adhesive film capable of concentrating light sources at the edge of a liquid crystal display, which is convenient to use, easy to stick and tear, and easy to use. Peeling, non-stick roll, good shading effect, and can be pasted for a long time.

In order to achieve the above object, the production method of the light-shielding film of the present invention is realized through the following technical solutions:

The production method based on light-shielding adhesive film of the present invention, comprises the following steps:

①. First, perform a lamination, place the material-release film, double-sided adhesive, and auxiliary release film on each discharge shaft and fix them, and then let the release surface of the release film and the double-sided adhesive fit together , Uncover the blue release film of the double-sided adhesive itself through the stripper plate, and attach it with the release surface of the auxiliary release film. When laminating, pay attention to controlling the axial tension of each material within 15KG/CM;

②, and then carry out a stamping. When punching the first knife, enter the knife from the surface of the auxiliary release film, pay attention to the full cutting of the positioning hole, and the half cutting of other positions. stamping;

③. Enter the waste discharge process. The stamped material needs to tear off the inner frame and the remaining material on the edge, attach the single-sided adhesive to the inner frame, and then peel off the auxiliary release film on the surface of the inner frame and roll it up. , when rolling, the speed is below 10M/min, and the tension is below 20KG/CM, and then the PET transparent plastic film is used to bond the surface waste material to tear off the remaining material of the inner frame. The speed is also below 10M/min, and the tension is also the same. Below 20KG/CM;

④. Carry out the second lamination, paste the material with the inner frame waste torn, and pay attention to the release surface of the other release film. The tension of the other release film should be less than 5KG/CM when laminating , so as not to cause bad bonding, the bonded material should be rolled up with a plastic tube or stainless steel tube with a larger inner diameter, and the tension should be within 20KG/CM;

⑤. Secondary stamping. When stamping the second knife, enter the knife from another release film surface, all half-cut processing, do not cut through the release film, otherwise it will cause adverse phenomena such as difficulty in peeling;

⑥. Secondary waste discharge procedure. The semi-finished product after stamping needs to be removed from the outer frame. At this time, a small jig should be used, because the product will be lifted up when it is directly torn by the machine. Use a small jig to fix it and gently Just pull it diagonally;

⑦, cutting, the products torn off the waste pass through the shearing machine and the light sensor, set the number of each module to cut, and set each large sheet (a large sheet of N products) to ensure that N products are cut (continuous constant);

⑧. Carry out the packing process, confirm the appearance of each product according to the inspection standard, and pack every 40 sheets (ie 200 pieces) after passing the test.

The light-shielding adhesive film of the present invention is easy to tear off, and it is convenient to quickly paste it on the outer frame of the liquid crystal display, so that light does not pass through, thereby achieving the effect of light-shielding, and can effectively simplify operation procedures and improve production efficiency.

Detailed ways

Below in conjunction with specific embodiment the present invention is described in further detail:

Raw materials and models adopted in the present invention:

Main material: release film (HY-AS06), double-sided tape (#7648), another release film (HY-US20)

Auxiliary materials: auxiliary release film (PET38), single-sided adhesive (631S), PET transparent plastic film (LMRS-50).

The concrete production method of light-shielding adhesive film comprises the following steps:

(1) One-time bonding steps:

First, place the release film (HY-AS06), double-sided adhesive tape (#7648), and auxiliary release film (PET38) on each discharge shaft and fix them, and then let the release film (HY-AS06) The release surface is attached to the black double-sided adhesive (#7648), and the blue release film of the double-sided adhesive (#7648) itself is uncovered through the stripper, and the release surface of the auxiliary release film (PET38) is used When laminating, pay attention to the axial tension of each material is controlled within 15KG/CM;

(2) One stamping step:

Then when stamping the first knife, enter the knife from the auxiliary release film (PET38) film surface, pay attention to the full cutting of the positioning hole, and the half cutting of other positions. After adjustment, set the feeding distance of 45 to 55, and stamping can only be carried out after confirmation;

(3) One-time waste discharge steps:

The stamped material needs to tear off the inner frame and the remaining material on the side, attach the single-sided adhesive (631S) to the inner frame, and then peel off the auxiliary release film (PET38) on the surface of the inner frame and roll it up. When rolling, the speed is below 10M/min, the tension is below 20KG/CM, and then the PET transparent plastic film (LMRS-50) is used to bond the surface waste material to tear off the remaining material of the inner frame, and the speed is also below 10M/min , the tension is also below 20KG/CM;

(4) Secondary bonding steps:

Lay the materials that have been torn off the inner frame waste, and pay attention to the release surface of the other release film (HY-US20). When laminating, the tension of the other release film (HY-US20) should be less than 5KG/ CM, because it will cause poor fit, the laminated material should be rolled up with a PVC plastic pipe or stainless steel pipe with a larger inner diameter, and the tension should be within 20KG/CM;

(5) Secondary stamping steps:

When stamping the second knife, enter the knife from the other side of the release film (HY-US20), all half-cut processing, do not cut through the release film (HY-AS06), otherwise it will cause adverse phenomena such as difficult peeling;

(6) Secondary waste discharge steps:

The semi-finished product after stamping needs to be removed from the outer frame waste. At this time, a small jig should be used, because the product will be lifted up when it is directly torn by the machine. It can be fixed with a small jig and gently pulled by hand;

(7) Cutting steps:

The products that have been torn from the waste pass through the shearing machine and the light sensor, set the number of each module to cut, and set each large sheet (a large sheet of N products) to ensure that N products are cut (continuously unchanged);

(8) Packing steps:

Check the appearance of each product according to the inspection standard, and pack it in 40 sheets (ie 200 pieces) after passing the inspection.

The above-mentioned embodiments are only used to illustrate the present invention for convenience, and are not intended to limit the present invention in any form. Anyone with ordinary knowledge in the technical field can use this The equivalent embodiments of partial changes or modifications made in the technical content disclosed in the invention, and without departing from the technical features of the present invention, still fall within the scope of the technical features of the present invention.

Claims (2)

1. A production method based on light-shielding adhesive film, is characterized in that, comprises the steps: ①. First, perform a lamination, place the material-release film, double-sided adhesive, and auxiliary release film on each discharge shaft and fix them, and then let the release surface of the release film and the double-sided adhesive fit together , Uncover the blue release film of the double-sided adhesive itself through the stripper plate, and attach it with the release surface of the auxiliary release film. When laminating, pay attention to controlling the axial tension of each material within 15KG/CM; ②, and then carry out a stamping. When punching the first knife, enter the knife from the surface of the auxiliary release film, pay attention to the full cutting of the positioning hole, and the half cutting of other positions. stamping; ③, waste discharge procedure, the stamped material needs to tear off the inner frame and the remaining material on the edge, attach the single-sided adhesive to the inner frame, and then lift and roll up the auxiliary release film of the inner frame surface bottom material, When rolling, the speed is below 10M/min, and the tension is below 20KG/CM, and then a transparent plastic film is used to bond the surface waste material to tear off the remaining material of the inner frame. The speed is also below 10M/min, and the tension is also 20KG/CM. Below CM; ④. For the second lamination, paste the materials that have been torn off the waste of the inner frame, and pay attention to laminating the release surface of another release film. When laminating, the tension of the other release film should be less than 5KG/CM. Reluctance will cause poor fit. The laminated material should be rolled up with a plastic tube or stainless steel tube with a larger inner diameter, and the tension should be within 20KG/CM; ⑤. Secondary stamping. When stamping the second knife, enter the knife from another release film surface, all half-cut processing, do not cut through the release film, otherwise it will cause adverse phenomena such as difficulty in peeling; ⑥. Secondary waste discharge procedure. The semi-finished product after stamping needs to be removed from the outer frame. At this time, a small jig should be used, because the product will be lifted up when it is directly torn by the machine. Use a small jig to fix it and gently Just pull it diagonally; ⑦. Cutting procedure, the products that have been torn off the waste pass through the shearing machine and the light sensor, and the number of each mold is set for cutting. 2. In the production method of the light-shielding adhesive film according to claim 1, it is characterized in that: after the step ⑦ is completed, the packaging process is carried out, and the appearance of each product is confirmed according to the inspection standard, and it can be packaged after passing the test .