CN209923242U

CN209923242U - Double-layer composite temperature-resistant high-folding lens adhesive tape

Info

Publication number: CN209923242U
Application number: CN201920391133.4U
Authority: CN
Inventors: 占重光; 傅继平
Original assignee: Nanjing Jiantaipu New Materials Co Ltd
Current assignee: Nanjing Jiantaipu New Materials Co Ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-01-10
Anticipated expiration: 2029-03-26

Abstract

The utility model belongs to the technical field of the sticky tape, concretely relates to double-deck compound temperature resistant high lens sticky tape that rolls over. The release agent comprises a composite substrate layer, wherein a release agent layer is coated on the outer side surface of the composite substrate layer, and a pressure-sensitive adhesive layer is coated on the inner side surface of the composite substrate layer. The utility model discloses an adopt double-deck composite film to be the substrate, sticky tape tensile strength is bigger, the holding power is stronger, and compliance, docile nature are better simultaneously, in resin lens high temperature curing process, the shrink still less.

Description

Double-layer composite temperature-resistant high-folding lens adhesive tape

Technical Field

The utility model belongs to the technical field of the sticky tape, concretely relates to double-deck compound temperature resistant high lens sticky tape that rolls over.

Background

With the continuous popularization of personal digital products, the incidence rate of myopia is increasing, and particularly the rate of myopia of teenagers is increasing year by year. Myopia and astigmatism can be corrected and prevented by wearing glasses with proper degrees in early stage.

The resin lens gradually replaces the glass lens with the advantages of lightness, safety, impact resistance and the like. The edge of a lens mould is sealed by using an adhesive tape in the resin lens forming process, the traditional lens adhesive tape with the folding height of more than 1.60 adopts 25-50 mu mPET as a base material, is coated with 10-30 mu m of acrylic acid or organic silicon pressure-sensitive adhesive, and has high temperature resistance of 130 ℃ without adhesive residue for two hours. The lens adhesive tape takes the single-layer film as a base material, so that the supporting force is insufficient in the resin lens pouring process, the lens adhesive tape is easy to be washed away, and in the high-temperature curing process, the shrinkage of the adhesive tape is easy to cause liquid leakage and air bubbles.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a lens sticky tape is rolled over to double-deck compound temperature resistant height, its tensile strength is bigger, the holding power is stronger, and compliance, docile nature are better simultaneously, in resin lens high temperature curing process, the shrink still less.

In order to achieve the technical purpose, the utility model adopts the following technical scheme: double-deck compound temperature resistant high mirror plate sticky tape, including the composite substrate layer, the outside surface coating of composite substrate layer has the mold release layer, the inboard surface coating of composite substrate layer has pressure sensitive adhesive layer.

As one preferable scheme, the composite base material layer comprises two PET film layers, and the two PET film layers are bonded through a composite glue layer.

Preferably, the thickness of the PET film layer is 12-38 μm; the thickness of the composite glue layer is 8-12 μm. The total thickness of the composite substrate layer (containing the composite glue) is preferably controlled to be not more than 65 μm.

As another preferred scheme, the composite substrate layer comprises two PA film layers, and the two PA film layers are bonded by a composite adhesive layer.

Preferably, the thickness of the PA thin film layer is 12-38 μm; the thickness of the composite glue layer is 8-12 μm.

Preferably, the pressure-sensitive adhesive layer is an acrylic pressure-sensitive adhesive layer or a silicone pressure-sensitive adhesive layer.

Preferably, the thickness of the pressure-sensitive adhesive layer is 10 μm to 30 μm.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has at least: by adopting the double-layer composite film as the base material, the adhesive tape has higher tensile strength, stronger supporting force, better flexibility and conformability and less shrinkage in the high-temperature curing process of the resin lens.

The test result at the client shows that the high-folding lens adhesive tape adopting the double-layer composite base material has the defect loss rate of one-time curing of the high-folding lens reduced by more than 3 percent and reduced to about 2 percent from about 5 percent. Although the cost of the double-layer composite substrate high-folding lens adhesive tape is increased by about 30 percent compared with the single-layer substrate lens adhesive tape, the benefit brought by the increase of the qualified rate of the lens is far greater than the increase of the cost of the adhesive tape.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

fig. 1 is a schematic cross-sectional structure diagram of a first embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of a second embodiment of the present invention.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

Example one

As shown in fig. 1, the double-layer composite temperature-resistant high-folding lens tape comprises a composite substrate layer, in this embodiment, the composite substrate layer comprises two PET film layers 1 with a thickness of 12 μm to 38 μm, the two PET film layers 1 are bonded by a composite adhesive layer 2 with a thickness of about 10 μm, and the total thickness of the composite substrate layer (including the composite adhesive) is controlled to be 55 μm to 65 μm; the outer side surface of the composite substrate layer is coated with a release agent layer 3, and the inner side surface of the composite substrate layer is coated with a high-temperature-resistant acrylic pressure-sensitive adhesive layer 4 with the thickness of 10-30 microns.

Example two

As shown in fig. 2, the double-layer composite temperature-resistant high-folding lens tape includes a composite substrate layer, in this embodiment, the composite substrate layer includes two PA film layers 5 with a thickness of 12 μm to 38 μm, the two PA film layers 5 are bonded by a composite adhesive layer 2 with a thickness of about 10 μm, the composite adhesive layer 2 can be a common adhesive for film composite bonding, such as a water-based plastic-plastic composite adhesive, and the total thickness of the composite substrate layer (including the composite adhesive) is controlled to be 45 μm to 55 μm; the outer side surface of the composite base material layer is coated with a release agent layer 3, and the inner side surface of the composite base material layer is coated with an organic silicon pressure-sensitive adhesive layer 6 with the thickness of 10-30 microns.

The double-layer composite temperature-resistant high-folding lens adhesive tape prepared in the first and second embodiments has a peeling force of 8N/25mm, can resist temperature of 130 ℃/2 hours without adhesive residue, and can meet the requirements of high-folding resin lenses on the adhesive tape.

Wherein, the composite glue layer 2 can adopt common glue for film composite bonding, such as aqueous plastic-plastic composite glue and the like, as long as the bonding property between the two films is ensured; the release agent layer 3 can be formed by various adhesive tape release agents commonly used in the field. The PA film layer and the PET film layer in the first and second embodiments may be replaced with each other.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims

1. Double-deck compound temperature resistant high book lens sticky tape, its characterized in that: the release agent is coated on the outer side surface of the composite substrate layer, and the pressure-sensitive adhesive layer is coated on the inner side surface of the composite substrate layer;

the composite substrate layer comprises two PET film layers or two PA film layers, and the two PET film layers or the two PA film layers are bonded by a composite adhesive layer.

2. The double-layer composite temperature-resistant high-folding lens adhesive tape according to claim 1, characterized in that: the thickness of the PET film layer or the PA film layer is 12-38 mu m; the thickness of the composite glue layer is 8-12 μm.

3. The double-layer composite temperature-resistant high-folding lens adhesive tape according to claim 1 or 2, characterized in that: the pressure-sensitive adhesive layer is an acrylic pressure-sensitive adhesive layer or an organic silicon pressure-sensitive adhesive layer.

4. The double-layer composite temperature-resistant high-folding lens adhesive tape according to claim 3, characterized in that: the thickness of the pressure-sensitive adhesive layer is 10-30 μm.