Polarizer processing device

Abstract

The utility model discloses a polaroid processing device in the field of polaroids, and aims to solve the problems that in the prior art, stripping deterioration can occur, so that full-breadth stripping separation is caused to cause poor attachment, the product yield is seriously influenced, and materials are wasted. The laminating wheel is used for extruding and laminating a film material of the polaroid, the side edge curing devices are used for curing the side edges of the film material, the full-width curing device is used for curing the full width of the film material, the curing devices are arranged between the full-width curing device and the laminating wheel, and the side edge curing devices are arranged on the two side edges of the film material. According to the utility model, the side edge curing device is arranged between the re-laminating wheel and the full-breadth curing device, and the full-breadth curing device is used for performing full-breadth curing after binders on the two side edges of the membrane material are cured, so that air is prevented from entering the membrane material before the membrane material passes through the full-breadth curing device, and defective products with wide stripping and separation are avoided.

Description

Technical Field

[0001] The utility model relates to the field of polaroids, in particular to a polaroid processing device. Background Art

[0002] Film is a crucial component of liquid crystal panels. Its basic structure consists of a central layer of PVA film impregnated with optically ditropic iodine ions to achieve a polarizing effect. Two protective films, top and bottom, are bonded to the PVA film with adhesive. The inner PVA film is protected, while the lower protective film is coated with a layer of PSA adhesive for bonding to the glass substrate. With the rapid growth of the large-scale panel industry, the domestic film market continues to heat up. Large-size, ultra-wide film is popular due to its high production efficiency and high cutting efficiency. UV-adhesive hydrophobic film plays a crucial role due to its excellent weather resistance and low cost.

[0003] Nitto Denko's patent CN203745675 provides a polarizing plate manufacturing device that uses a light-curing adhesive to perform a UV curing process on the upper and lower protective TAC films and the polarizing film PVA, achieving a rapid curing and bonding effect.

[0004] However, in this UV glue hydrophobic film lamination process, the main method is to first apply a light-curing adhesive to the upper and lower protective TAC film lamination sides, and the upper and lower lamination sides of the polarizing film PVA, and then flow it into the lamination roller to press and evenly mix it. Then, the whole is exposed to UV light to achieve rapid curing and bonding of the glue. However, since the UV glue on the upper and lower TAC protective films and the upper and lower surfaces of the polarizing film PVA is in a wet state, the adhesive will occasionally wet the gaps between the films and mix with air. Even after the tight pressing of the lamination roller, the colloid between the PVA and the hydrophobic material TAC film still remains and cannot be completely avoided. The most common location is after the wet UV glue is applied and before the UV curing after sliding into the lamination roller. The side parts are mixed with air, resulting in frequent peeling of the three layers on the side. This will cause the peeling to worsen, resulting in full-width peeling and separation, resulting in poor lamination, seriously affecting the product yield and causing material waste. Utility Model Content

[0005] The purpose of the utility model is to provide a polarizer processing device, in which a side curing device is arranged in front of a full-width curing device, and the side of the film material is first cured by the side curing device to isolate the air and reduce the occurrence of peeling.

[0006] In order to solve the above technical problems, the following technical solutions are adopted:

[0007] The present application provides a polarizer processing device, including a bonding wheel for extruding and bonding a polarizer film, a side curing device for curing the side of the film material, and a full-width curing device for curing the full width of the film material. The curing device is arranged between the full-width curing device and the bonding wheel, and the side curing device is provided on both sides of the film material.

[0008] Optionally, the curing device is arranged 10 to 15 meters away from the full-width curing device, and one side curing device is arranged above and below both sides of the membrane material.

[0009] Optionally, the curing device includes a light source and a lens for focusing light, and the lens is arranged below the light source.

[0010] Optionally, the light source includes a lamp tube and a lamp housing, the lamp housing includes an upper lampshade, side panels and a lower shell, the lamp tube is installed on the side panels on both sides, the upper lampshade is arranged above the two side panels, and the lower shell is arranged below the two side panels.

[0011] Optionally, the lens comprises a convex lens, the convex lens is 5 to 50 mm away from the light source, the focal length of the convex lens ranges from 100 to 500 mm, and the film material is 20 to 100 mm away from the focus of the convex lens.

[0012] Optionally, the upper lampshade and the inner side surfaces of the side panels on both sides are coated with a strong reflective coating.

[0013] Optionally, the lamp tube comprises a metal halide lamp tube, wherein the ultraviolet wavelength range is 350 to 380 mm.

[0014] Optionally, the length of the lamp tube ranges from 500 to 10,000 mm, and the number of the lamp tubes is 5.

[0015] Optionally, a regulating switch for controlling the lamp switch is provided on the side of the lower shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The utility model arranges a side curing device between the laminating wheel and the full-width curing device, cures the adhesive on both sides of the membrane material, and then passes through the full-width curing device for full-width curing, thereby preventing air from entering the membrane material before passing through the full-width curing device, and preventing defective products such as wide peeling and separation from occurring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the polarizer processing device in an embodiment of the present utility model;

[0019] Figure 2It is a schematic structural diagram of the side curing device in an embodiment of the present utility model;

[0020] Figure 3 It is a schematic diagram of the light source structure in an embodiment of the present utility model.

[0021] Description of reference numerals:

[0022] 1. Laminating wheel; 2. Side curing device; 201. Lamp tube; 202. Convex lens; 203. Upper lampshade; 204. Side panel; 205. Lower housing; 206. Adjustment switch; 3. Full-width curing device; 4. Film material. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only some embodiments of the present application, rather than all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application, its application, or use.

[0024] Example 1

[0025] like Figure 1 As shown, this embodiment provides a polarizer processing device, including a bonding wheel 1 for extruding and bonding a film material 4 of the polarizer, a side curing device 2 for curing the side of the film material 4, and a full-width curing device 3 for curing the full width of the film material 4, wherein the curing device is arranged between the full-width curing device and the bonding wheel, and the curing device is arranged on both sides of the film material.

[0026] During processing and use, the adhesive is coated on each bonding side of the membrane material 4, and then flows into the bonding wheel 1 for extrusion and bonding. The adhesive on both sides of the membrane material 4 is cured by the side curing device 2, so that the adhesive on both sides of the membrane material 4 is cured, and no air enters the inside of the membrane material 4. The adhesive in the membrane material 4 is then completely cured by the full-width curing device 3 to complete the processing.

[0027] Example 2

[0028] like Figure 1-Figure 3 As shown, this embodiment provides a polarizer processing device based on Example 1, which is different from Example 1 in that the curing device 2 includes a light source and a lens for focusing light, and the lens is arranged near the light source.

[0029] The light source includes a lamp tube 201 and a lamp housing, and the lens is arranged outside the lamp housing.

[0030] The lamp housing includes an upper lampshade 203 , side panels 204 and a lower shell 205 . The lamp tube 201 is mounted on the side panels 204 on both sides. The upper lampshade 203 is arranged above the two side panels, and the lower shell is arranged below the two side panels 204 .

[0031] The light source can be a plurality of metal halide lamp tubes 201, which are arranged in parallel, and the two ends of the lamp tubes 201 are respectively installed in the "I-shaped" slit slides on the side panels 204 on both sides, wherein the distance between the two lamp tubes 201 is 10-15 cm, and the length of the lamp tube 201 is between 500 and 10000 mm, wherein the ultraviolet wavelength range is 350 to 380 mm.

[0032] The upper lampshade 203 is curved, with a slope of approximately 6cm. The curved surface can be made of 304 stainless steel, polycarbonate, or organic high-temperature-resistant glass. The upper lampshade 203 and the inner surfaces of the side panels 204 on either side are coated with a highly reflective coating to facilitate concentrated light and heat reflection. The highly reflective coating can be a white paint coating, high-temperature oxidation-resistant zinc, tin oxide, or a silver coating. This coating concentrates the light generated by the lamp into the lamp housing, where it is then emitted through the lower housing 205. A lens is located directly below the lower housing 205, focusing the light onto the film material to cure the adhesive within the film.

[0033] A regulating switch 206 for controlling the on / off of the lamp tube 201 is provided on the side of the lower housing 205 .

[0034] Specifically, this embodiment is described in conjunction with PMMA (polymethyl methacrylate) film as the film material 4, UV glue as the adhesive, the light source is a metal halide glass tube 201, the number of the lamp tubes 201 is 5, the lens is a convex lens 202, the focal length of the convex lens 202 is 250mm, the film material 4 moves on the device at a flow rate of 20 to 30m / min, and a side curing device 2 is set 10 to 15m in front of the full-width curing device 3. In order to ensure the curing effect and achieve the best air isolation effect, the preferred solution is to install a light source on each of the upper and lower sides 15cm away from the film material, a total of 4, and place the K9 plano-convex lens below the light source according to the focal length of 250mm. The K9 plano-convex lens is placed 50mm below the focus of the cured film material 4.

[0035] During processing and use, UV glue is evenly coated on the bonding side of the film material 4, and the film material 4 is bonded together by rolling with the bonding wheel 1. The UV glue inside the bonded film material 4 is still wet and needs to be cured by lighting. The bonded film material 4 first passes through the side curing devices 2 on the upper and lower sides for local lighting. The film material 4 is 50 mm below the focus of the convex lens 202. Through the focusing effect of the convex lens 202, the intensity of ultraviolet rays acting on the film material 4 is greater than the intensity emitted by the lamp tube 201, and the UV glue can be cured more quickly. After the UV glue on the side is cured, the film material 4 enters the full-width curing device 3 for full-width curing.

[0036] Before the film material 4 moves to the full-width curing device 3, the film material containing moist UV glue inside is prone to air entering on both sides of the film material. The air entering will cause bubbles to appear in the UV glue. After curing, the UV glue will not be firm after curing due to the air entering the side, resulting in the side peeling of the film material. This embodiment sets a side curing device in front of the full-width curing device 3 to first cure the side and then perform full-width curing. This can prevent air from entering the bonded film material from the side and avoid the occurrence of peeling defective products. Comparing the differences between conventional methods and this application, the sides of the PMMA film achieve rapid closed curing. In the production test, the peeling situation is reduced from the original incidence of 80% to less than 10%, and the production loss rate is significantly reduced.

[0037] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A polarizer processing device, characterized in that: It includes a bonding wheel for extruding and bonding the polarizer film, a side curing device for curing the side of the film, and a full-width curing device for curing the full width of the film. The curing device is arranged between the full-width curing device and the bonding wheel, and the side curing device is provided on both sides of the film.

2. The polarizer processing device according to claim 1, characterized in that: The curing device is arranged at a distance of 10 to 15 meters from the full-width curing device, and one side curing device is arranged above and below both sides of the membrane material.

3. The polarizer processing device according to claim 1, wherein: The curing device includes a light source and a lens for focusing light, and the lens is arranged below the light source.

4. The polarizer processing device according to claim 3, characterized in that: The lamp source includes a lamp tube and a lamp housing. The lamp housing includes an upper lampshade, side panels and a lower shell. The lamp tube is installed on the side panels on both sides. The upper lampshade is arranged above the two side panels, and the lower shell is arranged below the two side panels.

5. The polarizer processing device according to claim 3, characterized in that: The lens comprises a convex lens, the convex lens is 5 to 50 mm away from the light source, the focal length of the convex lens ranges from 100 to 500 mm, and the film material is 20 to 100 mm away from the focus of the convex lens.

6. The polarizer processing device according to claim 4, characterized in that: The inner side surfaces of the upper lampshade and the side panels on both sides are coated with a strong reflective coating.

7. The polarizer processing device according to claim 4, characterized in that: The lamp tube comprises a metal halide lamp tube, wherein the ultraviolet wavelength range is 350 to 380 mm.

8. The polarizer processing device according to claim 4, characterized in that: The length of the lamp tube ranges from 500 to 10,000 mm, and the number of the lamp tubes is 5.

9. The polarizer processing device according to claim 4, characterized in that: A regulating switch for controlling the lamp switch is provided on the side of the lower shell.

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