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PET (polyethylene terephthalate) protective film for preparing flat-panel display

A flat-panel display and protective film technology, applied in chemical instruments and methods, film/sheet adhesives, layered products, etc., can solve problems such as non-antistatic, high pressure-sensitive adhesive adhesion, and insufficient stiffness , to achieve the effect of high cohesion, damage prevention and low polarity

Inactive Publication Date: 2011-07-27
KUNSHAN BYE MACROMOLECULE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional protective film uses ordinary PP protective film base material, and the ordinary adhesive layer is coated on its surface. This kind of protective film has many shortcomings: first, the stiffness is not enough, and it is not suitable for fast suction and placement by manipulators. ; Second, it is not antistatic, which affects the rapid suction and release of the manipulator; third, the strength is not enough to protect the 0.4mm thick glass from rotating at high speed during grinding; It is very difficult to put it down, and sometimes even damage the glass lens; fifth, it is not resistant to high temperatures of 180°C

Method used

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  • PET (polyethylene terephthalate) protective film for preparing flat-panel display
  • PET (polyethylene terephthalate) protective film for preparing flat-panel display

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Comparison scheme
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specific Embodiment approach

[0017] figure 1 It is a schematic diagram of an expanded section of an embodiment of the present invention.

[0018] Such as figure 1 Shown: PET protective film for flat panel display process, including optical-grade PET protective film substrate 1, low-polarity pressure-sensitive adhesive 2 and release film 3, wherein the low-polarity pressure-sensitive adhesive 2 is coated on the optical One side of the protective film substrate 1 is made of grade PET, and the release film 3 is laminated on the upper surface of the pressure-sensitive adhesive 2 with low polarity.

[0019] The pressure-sensitive adhesive 2 with low polarity is 18-20 g / m 2 The grammage and 18-19 μm dry layer thickness are coated on the upper surface of the optical-grade PET protective film substrate 1, and the peeling force of the low-polarity pressure-sensitive adhesive 2 at 180° is 2-5gf / 25mm; while the thickness of the optical-grade PET protective film substrate is 50-150 μm, and the optical-grade PET p...

Embodiment 1

[0020] Embodiment 1: The pressure-sensitive adhesive 2 with low polarity is 18 g / m 2 The grammage and 18μm dry layer thickness are coated on the upper surface of the optical-grade PET protective film substrate 1, and the peeling force of the low-polarity pressure-sensitive adhesive 2 at 180° is 2gf / 25mm, while the optical The thickness of the grade PET protective film substrate 1 is 50 μm.

Embodiment 2

[0021] Embodiment 2: the pressure-sensitive adhesive 2 with low polarity is 19 g / m 2 The grammage and 18.5 μm dry layer thickness are coated on the upper surface of the optical-grade PET protective film substrate 1, and the peeling force of the low-polarity pressure-sensitive adhesive 2 at 180° is 3gf / 25mm, while The thickness of the optical-grade PET protective film substrate is 100 μm.

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Abstract

The invention discloses a PET (polyethylene terephthalate) protective film for preparing a flat-panel display, which is characterized by comprising an optical-level PET protective film base material and low-polarity pressure-sensitive adhesive, wherein the low-polarity pressure-sensitive adhesive is coated on the upper surface of the optical-level PET protective film base material. Since the pressure-sensitive adhesive has the characteristics of low polarity and high cohesive force, is inert, and can be instantaneously attached to the surface of the glass material of the flat-panel display, the protective film prepared from the pressure-sensitive adhesive, optical-level PET protective film and the like has the characteristics of no shedding, easy stripping after coating by vaporization, no adhesive residue, no pollution, high temperature resistance and static resistance, and can effectively avoid damaging the glass lens in the stripping process.

Description

technical field [0001] The invention relates to a PET protective film, in particular to a PET protective film for a flat panel display manufacturing process, and belongs to the technical field of chemical protective films. Background technique [0002] Flat-panel display technology is the basic technology of the information industry, and it is also an emerging technology in the ascendant in recent years. One of the two main structures of flat-panel displays is the glass substrate made of inorganic glass. The thickness of the glass substrate is becoming thinner and thinner, and the thickness of the thinnest glass substrate is only 0.4mm. This kind of glass substrate is made by cutting large-sized glass into small glass lenses of various shapes and sizes. made and sanded smooth all around. In addition, in order to eliminate the light refraction of the glass substrate and increase its light transmittance, it is necessary to evaporate a layer of ultra-thin metal on the glass le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02B32B27/06B32B27/36
Inventor 施法宽喻四海曾曙
Owner KUNSHAN BYE MACROMOLECULE MATERIAL CO LTD
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