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Glass protection film and manufacturing method thereof

A technology of glass protective film and microbeads, which is applied in the direction of flat products, other household appliances, conveyor objects, etc., and can solve the problems of reducing glass cleanliness, dust generated by paper pads, high breakage rate, etc.

Active Publication Date: 2009-07-01
SAMSUNG CORNING PRECISION MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If protective film and paper pad are used at the same time, additional handling and costs are incurred
In addition, paper pads generate dust, which reduces glass cleanliness
Moreover, for an LCD glass plate as thin as 1mm and with a large area, even if two people handle it carefully, it will inevitably result in a high breakage rate

Method used

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  • Glass protection film and manufacturing method thereof
  • Glass protection film and manufacturing method thereof
  • Glass protection film and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Using an extruder, the low density polyethylene is melted and extruded into a pre-cured film that is inherently tacky. Microbeads were embedded on one surface of the film while the film was solidified by pressing the film between a pair (two) of cooling rubber rollers, thereby forming a tack-free rough bead surface. The microbeads are distributed thereon by allowing the microbeads to fall freely onto one of the two chilled rubber rolls from a bead supply located above the chilled roll. Details are described below.

[0044] Base material: low density polyethylene

[0045] Bead Polymer: Low Density Polyethylene

[0046] Melting point: 140°C

[0047] Film weight: 10g / m 2

[0048] Application environment: clean room

[0049] Cooling rubber roller diameter: 80cm

[0050] Line speed: 90m / min

[0051] Polymer bead size: 80μm~500μm

[0052] Bead distribution: 3g / m 2

[0053] The diameter of the bead release hole set at the bottom of the storage funnel: 1.5mm

[0054...

Embodiment 2

[0058] The properties of the LCD glass protective film prepared in embodiment 1 are as follows:

[0059] i) Stickiness of the film: no difference from the stickiness of conventional protective films.

[0060] ii) Non-adhesive properties: general characteristics: from light to 10g / m 2 The membrane-protruding microbeads provide a non-stick rough surface. When the glass sheets are stacked, air is trapped between the beads protruding from the membrane, ensuring good separation of the glass sheets from each other as they are transferred one by one.

[0061] iii) General characteristics: as thin as 10g / m 2 The stable, non-stick surface enables easy removal of the treated film with a vacuum lift. The microbeads protruding from the membrane act as elastic material to help transport the glass plates more safely when the plates are stacked.

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Abstract

Disclosed are a glass protective film and a method for manufacturing the same. The glass protective film comprises a slightly adhesive surface and a rough microbead surface studded with a large number of microbeads. The microbeads are embedded in one side of the glass protective film to form the rough microbead surface while the glass protective film is molded and cured from a molten, slightly adhesive base material.

Description

technical field [0001] The invention relates to an LCD (liquid crystal display) glass protective film and a manufacturing method thereof. More specifically, the present invention relates to an LCD glass protective film having a slightly tacky inner surface and a non-tacky outer surface, which eliminates the need for paper pads when stacking LCD glass panels, and a method of making the same. Background technique [0002] Before fabricating thin film transistors on LCD glass, the LCD glass is placed in a clean room to keep it clean. Typically, a protective film is used to protect the LCD glass and keep the LCD glass clean during transportation from the LCD glass manufacturing site to the transistor fabrication site. Typically, paper pads are used as such glass protectors. Alternatively, a protective film can be applied to either side of the glass panes, with paper pads placed between the protective films when stacking the glass panes. However, the paper pads between the ind...

Claims

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Application Information

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IPC IPC(8): C08J5/18
CPCC08J5/18C08J2323/06B65G2249/02B65G49/069B29C70/64B29D7/01C08J2300/00C08L23/06C08L101/00C08L2203/16
Inventor 李秀永金男泰庾石凤
Owner SAMSUNG CORNING PRECISION MATERIALS CO LTD