PET release film applied to OCA glue and production process thereof

A production process and release film technology, applied in adhesives, film/sheet adhesives, coatings, etc. Poor flatness and other problems, to achieve the effect of improving leveling, enhancing adhesion, and reducing floating dust

Active Publication Date: 2017-06-27
江阴华美光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of the existing common PET release film, such as poor film surface flatness, poor release force stability, low cleanliness, light transmittance and haze that cannot meet the requirements, Provide a PET release film applied to OCA glue and its production process

Method used

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  • PET release film applied to OCA glue and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A PET release film applied to OCA glue, comprising the following components in parts by mass: 3 parts of D120 solvent naphtha, 8 parts of D30 solvent naphtha, 4 parts of butanone, 2 parts of isopropanol, 0.5 parts of silicone oil main agent, 0.6 parts of heavy stripping additive, 0.05 parts of crosslinking agent, 0.01 part of anchoring agent, and 0.02 parts of catalyst.

[0021] The production process of the above-mentioned PET release film applied to OCA glue comprises the following steps:

[0022] 1) Coating configuration Mix D120 solvent oil, D30 solvent oil, methyl ethyl ketone and isopropanol, stir at 1200 rpm for 30 minutes, filter with a 200-mesh filter, and use within 3 hours;

[0023] 2), the original film treatment includes corona treatment and dust removal treatment; the corona value is greater than 50 during the corona treatment, and the gap between any two points is guaranteed to be no more than 5; thereby enhancing the adhesion of the film surface; the Th...

Embodiment 2

[0029] A PET release film applied to OCA glue, comprising the following components in parts by mass: 8 parts of D120 solvent naphtha, 3 parts of D30 solvent naphtha, 8 parts of butanone, 0.5 parts of isopropanol, 2 parts of silicone oil main agent, 0.2 parts of heavy stripping additive, 0.09 parts of crosslinking agent, 0.01 part of anchoring agent, and 0.02 parts of catalyst.

[0030] The production process of the above-mentioned PET release film applied to OCA glue comprises the following steps:

[0031] 1) Coating configuration Mix D120 solvent oil, D30 solvent oil, methyl ethyl ketone and isopropanol, stir at 1200 rpm for 30 minutes, filter with a 200-mesh filter, and use within 3 hours;

[0032] 2), the original film treatment includes corona treatment and dust removal treatment; the corona value is greater than 50 during the corona treatment, and the gap between any two points is guaranteed to be no more than 5; thereby enhancing the adhesion of the film surface; the Th...

Embodiment 3

[0038] A PET release film applied to OCA glue, comprising the following components in parts by mass: 5 parts of D120 solvent naphtha, 5 parts of D30 solvent naphtha, 6 parts of butanone, 1 part of isopropanol, 1 part of silicone oil main agent, 0.4 parts of heavy stripping additive, 0.07 parts of crosslinking agent, 0.01 part of anchoring agent, and 0.02 parts of catalyst.

[0039] The production process of the above-mentioned PET release film applied to OCA glue comprises the following steps:

[0040] 1) Coating configuration Mix D120 solvent oil, D30 solvent oil, methyl ethyl ketone and isopropanol, stir at 1200 rpm for 30 minutes, filter with a 200-mesh filter, and use within 3 hours;

[0041] 2), the original film treatment includes corona treatment and dust removal treatment; the corona value is greater than 50 during the corona treatment, and the gap between any two points is guaranteed to be no more than 5; thereby enhancing the adhesion of the film surface; the The du...

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Abstract

The invention discloses a production process of a PET release film applied to OCA glue. The production process includes the steps that 1, a coating is prepared, wherein solvent oilD120, solvent oil D30, butanone and isopropanol are mixed to serve as a solvent; 2, a corona value is greater than 50 when a raw film is subjected to corona treatment, and a double-faced dust removal device is used for dust removal processing; 3, a precision coating mode is inverse coating, wherein the coating speed is 40 m / min; 4, drying and curing are performed; 5, material receiving and rolling are performed, wherein the tension during rolling is 230N, the taper is 50%, the pressure of a laminating roller is M: 0.4MPa / G: 0.4 MPa,the pressure of a traction roller is M: 0.2 MPa / G: 0.2 MPa; 6, post-curing treatment is performed at the temperature of 45 DEG C, and curing needs 48 hours. The light transmittance of the production process of the PET release film applied to the OCA glue is 90% or above, the haze is 3.0 or below, the release force stability (normal temperature) is 45 + / - 5 g, no visual particle nor foreign matter does not exist under a hundred times of a magnifying lens, a film surface is flat and free of longitudinal grains, water ripples, cross grains and obvious rainbow stripes, the aging stability is 70g or below, and the residual retention rate is 90% or above.

Description

technical field [0001] The invention relates to the technical field of optical protective films, in particular to a PET release film applied to OCA glue and a production process thereof. Background technique [0002] OCA is (Optically Clear Adhesive) a special adhesive used to glue transparent optical components (such as lenses, etc.). It is required to be colorless and transparent, with light transmittance above 90%, good bonding strength, curable at room temperature or medium temperature, and small curing shrinkage. OCA optical glue is one of the raw materials for important touch screens. The optical acrylic adhesive is made without a base material, and then a layer of release film is attached to the upper and lower base layers. It is a double-sided adhesive tape without a base material. This kind of OCA glue must use high-performance PET release film as a carrier in the process of production and use. However, due to its unique adhesiveness and special application requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D183/04C09D7/12C09D7/00C09J7/02C08L67/02
CPCC08J7/0427C08J2367/02C08J2483/04C09D7/20C09D7/40C09D183/04C09J7/401C09J2203/318C09J2483/005
Inventor 王上丹
Owner 江阴华美光电科技有限公司
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