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Mould roller for brightening film forming and manufacturing method thereof

A mold roll and steel roll technology, applied in the coating and other directions, can solve the problems of large diamond tool wear, high hardness of nickel-plated mold rolls, UV glue residue, etc., to achieve the effects of low cost, difficult to hang glue, and easy processing.

Inactive Publication Date: 2017-06-30
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems that the existing nickel-plated mold roll used to form a prism structure has high hardness, great wear on diamond tools, and difficult processing, the invention provides a mold roll for forming a brightness-enhancing film and its manufacturing method
Further, the mold roll provided by the present invention overcomes the defects that the existing nickel-plated mold roll is easy to cause UV glue to remain on the surface of the mold roll and is not easy to clean during the process of preparing the brightness enhancement film.

Method used

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  • Mould roller for brightening film forming and manufacturing method thereof
  • Mould roller for brightening film forming and manufacturing method thereof
  • Mould roller for brightening film forming and manufacturing method thereof

Examples

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Effect test

preparation example Construction

[0058] Such as figure 2 Shown, the preparation method of mold roll provided by the invention may further comprise the steps:

[0059] (1) Pre-treatment of the steel roller core: Before electroplating the processed steel roller core, it is necessary to clean the surface to ensure that the electroplating layer adheres well and does not peel. First use a special metal cleaning agent to remove surface oil and other sundries, then rinse with water, and finally activate the surface of the roller core with 3%-5% dilute sulfuric acid.

[0060] (2) Pre-plating nickel layer: In the case of no current, the steel roller core will undergo a displacement reaction when it contacts the acidic copper plating solution, and a layer of chemically replaced copper on the surface will be obtained, which is not firmly bonded to the surface of the steel roller core. Therefore, copper plating cannot be performed directly after cleaning, but a layer of nickel with a thickness of 8 μm to 10 μm must be ...

Embodiment 1

[0067] The invention provides a mold roll, which comprises a steel roll core, the surface of the steel roll core is pre-plated with a nickel coating with a thickness of 8 μm, and a copper coating with a thickness of 350 μm is arranged on the surface of the nickel coating, and the copper coating is A prism structure is engraved on the top, and a chromium plating layer is arranged on the surface of the prism structure; the hardness of the copper plating layer is HV230; the thickness of the chromium plating layer is 1 μm, and the hardness of the chromium plating layer is HV820.

[0068] The preparation method of above-mentioned mold roll, comprises the steps:

[0069] (1) Pretreatment of the steel roller core: Use a special metal cleaning agent to remove surface oil and other sundries, then rinse with clean water, and finally activate the surface of the roller core with 4% dilute sulfuric acid.

[0070](2) Pre-plating bottom layer: the nickel-plated anode is an electrolytic nicke...

Embodiment 2

[0077] As in the mold roll provided in Example 1, the thickness of the nickel coating is 10 μm, the thickness of the copper coating is 1000 μm, and the hardness of the copper coating is HV280; the thickness of the chromium coating is 5 μm, and the hardness of the chromium coating is HV970.

[0078] The preparation method of mold roll as provided in embodiment 1, wherein,

[0079] (2) Pre-plated bottom layer: the nickel-plated anode is an electrolytic nickel plate, and the main components of the nickel-plating solution include 320g / L of nickel sulfate, 45g / L of nickel chloride as an anode activator, and 50g / L of boric acid as a buffer. Stabilize the pH of the plating solution at 4.2, adjust it with NaOH, use 2ml / L hydrogen peroxide as an anti-pinhole agent, and control the temperature of the plating solution at 40±1°C, using 3A / dm 2 Plating current of 20 minutes was carried out to obtain a pre-plated nickel layer;

[0080] (3) Thick copper plating: After plating the bottom lay...

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Abstract

The invention relates to a mould applied to composite brightening film forming processing and a manufacturing method thereof, in particular to a mould roller for brightening film forming and a manufacturing method thereof. According to the mould roller, the problems that an existing nickel plated mould roller for forming a prism structure has high hardness, abrasion of a diamond tool is large, and processing is difficult are solved. The mould roller comprises a steel roller core, the surface of the steel roll core is pre-plated with a nickel coating, a copper coating is arranged on the surface of the nickel coating, a prism structure is carved on the copper coating, and a chrome coating is arranged on the surface of the prism structure. The thickness of the nickel coating is 8-10 [mu]m; the thickness of the copper coating is 350-1000 [mu]m; the hardness of the copper coating is HV 200 to HV 280; the thickness of the chrome coating is 1-5 [mu]m; and the hardness of the chrome coating is HV 800 to HV 1000. The mould roll provided by the invention is easy to process and low in cost.

Description

technical field [0001] The invention relates to a mold used for forming a composite brightness enhancing film and a manufacturing method thereof, in particular to a mold roll used for forming a brightness enhancing film and a manufacturing method thereof. Background technique [0002] The brightness enhancing film is a part of the material of the backlight module of the liquid crystal display LCD. Its function is to gather the light uniformly scattered in all directions within the front central viewing angle of the backlight (relative to the normal line of the light-emitting surface ±35°), which significantly improves the brightness of the backlight. The front-view brightness of the source reduces the loss of scattered light at low exit angles (relative to the emitting surface). [0003] The brightness enhancement film generally adopts the elongated microprism (Prism) structure of the isosceles right triangle. Through the refraction of light on the side of the prism, total r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C41/38C25D5/14C25D3/12C25D3/06C25D3/38
CPCB29C41/38C25D3/06C25D3/12C25D3/38C25D5/14
Inventor 金亚东朱小玺
Owner NINGBO CHANGYANG TECH
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