CN206654880U - A multi-functional double-sided adhesive - Google Patents

Abstract

The utility model provides a multi-functional two-sided paste glue, including the first type membrane of leaving that contacts in proper order, first bonding glue film, first bubble cotton layer, first anti blue light bonding glue film, substrate layer, the second anti blue light bonding glue film, the second bubble cotton layer, second bonding glue film, second leave the type membrane. The utility model provides a multi-functional two-sided adhesive glue can be used to bonding optical material, like optical glass, glasses lens etc. provides functions such as waterproof, protecting against shock and anti blue light simultaneously. The anti-blue-light adhesive layer has an anti-blue-light effect, and the product can shield 30% of short-wave blue light through detection; the special elasticity and the shock absorption performance of the TPU material ensure the impact resistance of the product; the foam with the upper and lower edges having the telescopic function can ensure the tight contact between the double-sided adhesive and the adhered object, and prevent the moisture from permeating.

Description

A multi-functional double-sided adhesive

technical field

The utility model relates to the technical field of adhesive materials, in particular to a multifunctional double-sided adhesive.

Background technique

Optical materials are materials that transmit light. These materials change the direction, intensity and phase of light by means of refraction, reflection and transmission, so that light can be transmitted according to predetermined requirements and paths, and can also be changed by absorbing or passing light in a certain wavelength range. The spectral composition of light. Optical materials include luminescent materials, optical fiber materials, infrared materials and photochromic materials, etc. Optical materials play an important role in the national economy and people's lives, and are also indispensable functional materials for human society.

With the development of modern optics, optoelectronics and information technology, the technical content of optoelectronic digital products and information products is getting higher and higher, making the production more and more difficult, and the requirements for optical materials are becoming more and more strict. Optical materials are bonded. However, the double-sided adhesives currently on the market for bonding optical materials, such as optical glass and spectacle lenses, have single functions and are far from meeting the application requirements of optical materials.

Utility model content

In view of this, the technical problem to be solved by the utility model is to provide a multifunctional double-sided adhesive, which has the functions of waterproof, impact resistance and blue light resistance.

The utility model provides a multifunctional double-sided adhesive, which comprises a first release film, a first adhesive layer, a first foam layer, a first anti-blue light adhesive layer, a substrate layer, The second anti-blue light adhesive layer, the second foam layer, the second adhesive layer, and the second release film.

Preferably, the substrate layer is a TPU substrate layer.

Preferably, the first anti-blue light adhesive layer and the second anti-blue light adhesive layer are independently silica gel, acrylic adhesive, hypoallergenic adhesive or OCA adhesive layer added with anti-blue light additives.

Preferably, the thicknesses of the first anti-blue light adhesive layer and the second anti-blue light adhesive layer are independently 10-55 μm.

Preferably, the added amount of the anti-blue light additive is 0.05wt%-5wt%.

Preferably, the first foam layer and the second foam layer are independently polyurethane, EVA or EPP.

Preferably, the light transmittance of the first foam layer is greater than 90%, the thickness is 10-75 μm, and the stretch rate is 1%-5%; the light transmittance of the second foam layer is greater than 90%, and the thickness is 10-75μm, stretch rate 1%-5%.

Preferably, the first adhesive adhesive layer and the second adhesive adhesive layer are independently silica gel, acrylic adhesive, hypoallergenic adhesive or OCA adhesive layer.

Preferably, the thicknesses of the first adhesive layer and the second adhesive layer are independently 10-75 μm.

Preferably, the first release film and the second release film are independently PET, PVC, PC, OPP or PE films.

Compared with the prior art, the utility model provides a multifunctional double-sided adhesive, which includes the first release film, the first adhesive layer, the first foam layer, the first anti-blue light bonding Adhesive layer, substrate layer, second anti-blue light adhesive adhesive layer, second foam layer, second adhesive adhesive layer, second release film. The multifunctional double-sided adhesive glue provided by the utility model can be used for bonding optical materials, such as optical glass, spectacle lenses, etc., while providing functions such as waterproof, impact resistance and blue light resistance. Among them, the anti-blue light adhesive layer plays the role of anti-blue light. After testing, the product can shield 30% of short-wave blue light; the unique elasticity and shock absorption performance of TPU material ensures the impact resistance of the product; the foam with stretching function on the upper and lower sides It can ensure the tight contact between the double-sided adhesive and the adherend, and prevent moisture from penetrating.

Description of drawings

Fig. 1 is a structural schematic diagram of the multifunctional double-sided adhesive provided by the utility model.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The utility model provides a multifunctional double-sided adhesive, which comprises a first release film, a first adhesive layer, a first foam layer, a first anti-blue light adhesive layer, a substrate layer, The second anti-blue light adhesive layer, the second foam layer, the second adhesive layer, and the second release film.

Referring to Fig. 1, Fig. 1 is the structural representation of the multifunctional double-sided adhesive glue provided by the utility model, wherein, 1 is the first release film, 2 is the first adhesive glue layer, 3 is the first foam layer, 4 is the first anti-blue light adhesive layer, 5 is the substrate layer, 6 is the second anti-blue light adhesive layer, 7 is the second foam layer, 8 is the second adhesive adhesive layer, and 9 is the second release type membrane.

The substrate layer adopted in the utility model is preferably a TPU (thermoplastic polyurethane elastomer rubber film) substrate layer, and its light transmittance is preferably greater than 90%.

Then, the first anti-blue light adhesive layer and the second anti-blue light adhesive layer are respectively compounded on both sides of the substrate layer.

In the present invention, the first anti-blue light adhesive layer and the second anti-blue light adhesive layer may be the same or different, which is not particularly limited in the present invention.

Its independent material is preferably silica gel, acrylic glue, hypoallergenic glue or OCA glue layer added with anti-blue light additives, more preferably OCA glue layer. Its thickness is independently preferably 10 to 55 μm.

The anti-blue light additive is preferably one or a combination of salicylates, benzophenones, benzotriazoles, substituted acrylonitriles, triazines and hindered amines.

The added amount of the anti-blue light additive is preferably 0.05wt%-5wt% of the glue in the anti-blue light adhesive layer.

The first anti-blue light adhesive layer and the second anti-blue light adhesive layer have the function of anti-blue light, and can bond the foam layer and the base material layer together, and are not easy to fall off.

Then compound the first foam layer on the side of the first anti-blue light adhesive layer away from the substrate layer, and compound the second foam layer on the side of the second anti-blue light adhesive layer away from the substrate layer .

In the present invention, the first foam layer and the second foam layer may be the same or different, which is not particularly limited in the present invention.

The material of the first foam layer and the second foam layer is independently preferably polyurethane, EVA (polyvinyl acetate) or EPP (polypropylene), and its light transmittance is independently preferably greater than 90%, and its independent thickness is preferably 10 to 75 μm, and the stretch rate independently is preferably 1% to 5%.

The utility model adds a foam layer to the transparent double-sided adhesive used for optical materials, so that the double-sided adhesive and the adherend are tightly bonded, has excellent waterproof properties, and at the same time makes the product have excellent impact resistance.

Then compound the first adhesive layer on the side of the first foam layer away from the first anti-blue light adhesive layer, and compound the second adhesive layer on the side of the second foam layer away from the second anti-blue light adhesive layer glue layer.

In the present invention, the first adhesive layer and the second adhesive layer may be the same or different, and the present invention has no special limitation on this.

The first adhesive adhesive layer is preferably a silica gel, acrylic adhesive, hypoallergenic adhesive or OCA adhesive layer, more preferably an acrylic adhesive layer. Its thickness is preferably 10 to 75 μm.

The second adhesive adhesive layer is preferably a silica gel, acrylic adhesive, hypoallergenic adhesive or OCA adhesive layer, more preferably a silica gel layer. Its thickness is preferably 10 to 75 μm.

Then the first release film is compounded on the side of the first adhesive layer away from the first foam layer, and the second release film is compounded on the side of the second adhesive layer away from the second foam layer.

In the present utility model, the first release film and the second release film may be the same or different, which is not particularly limited in the present utility model.

The materials of the first release film and the second release film are independently preferably PET, PVC, PC, OPP or PE films.

The thickness of the first release film is preferably 15-75 μm.

The thickness of the second release film is preferably 20-75 μm.

The release film can provide protection for the double-sided adhesive.

The utility model has no special limitation on the preparation method of the above-mentioned double-sided adhesive tape, which can be prepared according to the coating method well known to those skilled in the art.

In order to further illustrate the utility model, the multifunctional double-sided adhesive provided by the utility model is described in detail below in conjunction with the examples.

Example 1

1. Use a comma-type scraper to coat a layer of OCA glue added with anti-blue light substances on the surface of the TPU substrate; and cover with a layer of acrylic foam with a thickness of 25 μm;

2. Apply a layer of 40 μm thick acrylic glue on the lower surface of the foam (relative to the upper surface of the acrylic glue layer), and cover with a release film;

3. Use a comma-type scraper to coat a layer of OCA glue with anti-blue light substances on the other side of the TPU substrate (relative to the side coated with anti-blue light adhesive layer), and cover with a layer of acrylic acid with a thickness of 25 μm Foam;

4. Coat the outer surface of the foam (relative to the inner surface of the acrylic adhesive layer) with a layer of 40 μm thick silica gel, and cover with a release film.

Using the "Linshang Technology LS108 Anti-Blue Light Tester" test, it shows that the product can block 30% of short-wave blue light.

Waterproof test (IPX7) detection:

Appliance 1: ABS board_50mm x70mm x5mm

Tool 2: PMMA board_50mm x70mm x5mm

Sample size: 40mm (length) x 60mm (width) x 400um (thickness), with a small hole of 20mm (length) x 20mm (width) x 400um (thickness) in the middle;

Test environment: 40°C (water temperature) x 1.2M depth

Use the sample to glue the utensil 1 and utensil 2 together, and place it in water at 40°C (water temperature) x 1.2M depth for 30 minutes. The results show that no water enters the small hole in the center of the sample.

Anti-shock performance test:

Impact resistance test (ASTM D 2794)

Appliance 1: ABS board_50mm x70mm x5mm

Tool 2: PMMA board_50mm x70mm x5mm

Sample size: 40mm x60mm x400um

Test environment: RT

Weight: 500g;

Tear off the second release film of the sample, stick it on appliance 1 and appliance 2 respectively, and test it with the "falling ball impact test". The results show that the sample will not be damaged when the height is not greater than 300mm.

It can be seen from the above examples that the double-sided adhesive tape prepared by the present invention has the properties of waterproof, impact resistance and anti-blue light at the same time.

The descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (10)

1. A kind of 1. Multifunctional two-sided glue, it is characterised in that including contact successively the first mould release membrance, first bonding glue-line, First foamed cotton layer, the first anti-blue light glue line, substrate layer, the second anti-blue light glue line, the second foamed cotton layer, the second adhesive glue Layer, the second mould release membrance.
2. 2. Multifunctional two-sided glue according to claim 1, it is characterised in that the substrate layer is TPU substrate layers.
3. 3. Multifunctional two-sided glue according to claim 1, it is characterised in that the first anti-blue light glue line, Second anti-blue light glue line is independently silica gel, acrylic glue, sub- quick glue or the OCA glue-lines for adding anti-blue light auxiliary agent.
4. 4. Multifunctional two-sided glue according to claim 3, it is characterised in that the first anti-blue light glue line, The thickness of second anti-blue light glue line is independently 10~55 μm.
5. 5. Multifunctional two-sided glue according to claim 3, it is characterised in that the addition of the anti-blue light auxiliary agent is 0.05wt%~5wt%.
6. 6. Multifunctional two-sided glue according to claim 1, it is characterised in that first foamed cotton layer, the second foam Layer is independently polyurethane, EVA or EPP.
7. 7. Multifunctional two-sided glue according to claim 6, it is characterised in that the light transmittance of first foamed cotton layer is big In 90%, thickness is 10~75 μm, and expansion and contraction is 1%~5%；The light transmittance of second foamed cotton layer is more than 90%, and thickness is 10~75 μm, expansion and contraction is 1%~5%.
8. 8. Multifunctional two-sided glue according to claim 1, it is characterised in that the first bonding glue-line, second are glued Rubber alloy layer is independently silica gel, acrylic glue, sub- quick glue or OCA glue-lines.
9. 9. Multifunctional two-sided glue according to claim 8, it is characterised in that the first bonding glue-line, second are glued The thickness of rubber alloy layer is independently 10~75 μm.
10. 10. Multifunctional two-sided glue according to claim 1, it is characterised in that first mould release membrance, second release Film is independently PET, PVC, PC, OPP or PE film.