High-refractive-index resin lens packaging adhesive tape

Abstract

The utility model discloses a high-refractive-index resin lens packaging adhesive tape. The high-refractive-index resin lens packaging adhesive tape comprises a release agent layer, a BOPP (Biaxially-Oriented Polypropylene) film layer, a primer layer, an organic silicon adhesive layer, a PET (Polyethylene Terephthalate) film layer and a high-temperature-resistant organic silicon pressure-sensitive adhesive layer which are connected in sequence, the release agent layer is a release agent structural layer coated on the front surface of the BOPP film layer, the primer layer is a primer structural layer coated on the back surface of the BOPP film layer, and the organic silicon adhesive layer is an organic silicon adhesive structural layer coated on the surface of the primer layer; and the high-temperature-resistant organic silicon pressure-sensitive adhesive layer is a high-temperature-resistant organic silicon pressure-sensitive adhesive structural layer coated on the back surface of the PET film layer. The adhesive tape disclosed by the utility model is good in high temperature resistance and thermal stability, can effectively reduce the phenomena of fogging, adhesive residue, self-release and the like during packaging, and improves the forming quality of a lens.

Description

Technical Field

[0001] The utility model relates to the technical field of adhesive tapes, in particular to an adhesive tape for packaging a high-refractive-index resin lens. Background Art

[0002] During the forming process of resin lenses, tape is required to seal the edge of the lens mold. The traditional 1.56 lens tape (low-fold lens tape) is made of BOPP film as the base material and coated with solvent-based acrylic pressure-sensitive adhesive. BOPP film has good physical stability, mechanical strength, air tightness, high transparency and gloss, and is tough and wear-resistant, but its disadvantage is that it has poor heat sealing properties. Since its surface is non-polar, has high crystallinity, and low surface free energy, it has poor adhesion to adhesives. Using BOPP film tape to seal the lens mold is prone to fogging, residual glue, self-release, etc., which affects the quality of the lens. High-refractive-index lenses have a higher refractive index, which can make the eyes thinner and lighter, and have a tendency to gradually replace low-refractive-index lenses. However, the lens mold of high-refractive-index lenses is thinner and the packaging temperature is higher. Using traditional low-fold lens tape to package is more likely to cause fogging, residual glue, self-release, etc. Utility Model Content

[0003] In order to solve the technical problem that the lens mold of the high refractive index lens is easily fogged, has residual adhesive, and is self-separated from the mold when the lens mold is encapsulated with the traditional low-fold lens tape, the utility model provides a high refractive index resin lens encapsulation tape.

[0004] The technical solution adopted by the utility model is:

[0005] A high-refractive-index resin lens packaging tape comprises a release agent layer, a BOPP film layer, a primer layer, a silicone adhesive layer, a PET film layer and a high-temperature resistant silicone pressure-sensitive adhesive layer which are connected in sequence; the release agent layer is a release agent structural layer coated on the front side of the BOPP film layer, the primer layer is a primer structural layer coated on the back side of the BOPP film layer, the silicone adhesive layer is a silicone adhesive structural layer coated on the surface of the primer layer; and the high-temperature resistant silicone pressure-sensitive adhesive layer is a high-temperature resistant silicone pressure-sensitive adhesive structural layer coated on the back side of the PET film layer.

[0006] Furthermore, the release agent layer, BOPP film layer, primer layer, and silicone adhesive layer are sequentially connected to form a BOPP film tape, the PET film layer and the high temperature resistant silicone pressure-sensitive adhesive layer are sequentially connected to form a PET film tape, and the BOPP film tape and the PET film tape are connected by hot pressing.

[0007] By adopting the above technical solution, the manufacturing process of the adhesive tape can be simplified, and the number of times the BOPP film and the PET film are put into the oven for drying can be reduced, thereby improving the stability of the adhesive tape.

[0008] Furthermore, the thickness of the release agent layer is 1-2 μm.

[0009] Furthermore, the BOPP film layer is a BOPP film structure layer with a thickness of 20-40 μm.

[0010] Furthermore, the thickness of the primer layer is 3-5 μm.

[0011] Furthermore, the thickness of the organic silicone adhesive layer is 1-2 μm.

[0012] Furthermore, the PET film layer is a PET film structure layer with a thickness of 10-25 μm.

[0013] Furthermore, the thickness of the high temperature resistant silicone pressure sensitive adhesive layer is 20-40 μm.

[0014] Beneficial effects of the utility model:

[0015] 1. Through the combination of BOPP film and PET film, the high temperature resistance, thermal stability and tensile strength of the tape are increased, which effectively reduces the occurrence of fogging, residual glue, self-demolding and other phenomena during packaging, and improves the forming quality of the lens.

[0016] 2. By providing a primer layer between the BOPP film layer and the silicone adhesive layer, the adhesion of the BOPP film layer to the silicone adhesive can be increased, the bonding strength between the BOPP film and the PET film can be improved, and the stability of the tape can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a high refractive index resin lens packaging tape. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and a preferred implementation manner.

[0019] Example 1

[0020] See also Figure 1A high refractive index resin lens packaging tape comprises a release agent layer 11, a BOPP film layer 12, a primer layer 13, a silicone adhesive layer 14, a PET film layer 21 and a high temperature resistant silicone pressure-sensitive adhesive layer 22 which are connected in sequence; the release agent layer 11 is a release agent structural layer coated on the front side of the BOPP film layer 12, the primer layer 13 is a primer structural layer coated on the back side of the BOPP film layer 12, the silicone adhesive layer 14 is a silicone adhesive structural layer coated on the surface of the primer layer 13; the high temperature resistant silicone pressure-sensitive adhesive layer 22 is a high temperature resistant silicone pressure-sensitive adhesive structural layer coated on the back side of the PET film layer 21.

[0021] In this embodiment, the thickness of the release agent layer is 2 μm. In other embodiments, the thickness of the release agent layer can also be selected within the range of 1-2 μm.

[0022] In this embodiment, the BOPP film layer is a BOPP film structure layer with a thickness of 40 μm. In other embodiments, the thickness of the BOPP film can also be selected within the range of 20-40 μm.

[0023] In this embodiment, the thickness of the primer layer is 3 μm. In other embodiments, the thickness of the primer layer can also be selected within the range of 3-5 μm.

[0024] In this embodiment, the thickness of the organic silicone adhesive layer is 2 μm. In other embodiments, the thickness of the organic silicone adhesive layer can also be selected within the range of 1-2 μm.

[0025] In this embodiment, the PET film layer is a PET film structure layer with a thickness of 25 μm. In other embodiments, the thickness of the PET film can also be selected within the range of 10-25 μm.

[0026] In this embodiment, the thickness of the high temperature resistant organic silicon pressure sensitive adhesive layer is 20 μm. In other embodiments, the thickness of the high temperature resistant organic silicon pressure sensitive adhesive layer can also be selected within the range of 20-40 μm.

[0027] The preparation method of Example 1 is:

[0028] 1. First, prepare BOPP film tape and PET film tape respectively;

[0029] Preparation of BOPP film tape:

[0030] (1.1) applying the release agent on the front side of the BOPP film by blade coating, and forming a release agent layer 11 after drying and curing;

[0031] (1.2) Apply the primer on the back of the BOPP film by scraping, and form a primer layer 13 after drying and curing; the primer can be 3M TMTape primer 94;

[0032] (1.3) The organic silicone adhesive is applied on the surface of the primer layer 13 by a knife coating method, and the organic silicone adhesive layer 14 is formed after drying and curing; thus, a BOPP film tape is obtained.

[0033] Preparation of PET film tape

[0034] (2.1) The high temperature resistant silicone pressure sensitive adhesive is coated on the back of the PET film by a knife coating method, and after drying and curing, a high temperature resistant silicone pressure sensitive adhesive layer 22 is formed to obtain a PET film tape; the high temperature resistant silicone pressure sensitive adhesive can be Wacker Chemical SEMICOSIL 915HT high pressure and high temperature resistant silicone gel.

[0035] 2. Then, the BOPP film tape and the PET film tape are laminated together and hot-pressed at a high temperature of 120° C. to 150° C. with a pressure of 0.5 MPa to form the high refractive index resin lens packaging tape of the present application.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications are also within the protection scope of the present invention.

Claims

1. A high refractive index resin lens packaging tape, characterized in that: It includes a release agent layer, a BOPP film layer, a primer layer, a silicone adhesive layer, a PET film layer and a high-temperature resistant silicone pressure-sensitive adhesive layer connected in sequence; the release agent layer is a release agent structural layer coated on the front side of the BOPP film layer, the primer layer is a primer structural layer coated on the back side of the BOPP film layer, the silicone adhesive layer is a silicone adhesive structural layer coated on the surface of the primer layer; the high-temperature resistant silicone pressure-sensitive adhesive layer is a high-temperature resistant silicone pressure-sensitive adhesive structural layer coated on the back side of the PET film layer.

2. The high refractive index resin lens packaging tape according to claim 1, characterized in that: The release agent layer, BOPP film layer, primer layer and silicone adhesive layer are sequentially connected to form a BOPP film tape, the PET film layer and high temperature resistant silicone pressure sensitive adhesive layer are sequentially connected to form a PET film tape, and the BOPP film tape and the PET film tape are connected by hot pressing.

3. A high refractive index resin lens packaging tape according to claim 1 or 2, characterized in that: The thickness of the release agent layer is 1-2 μm.

4. A high refractive index resin lens packaging tape according to claim 1 or 2, characterized in that: The BOPP film layer is a BOPP film structure layer with a thickness of 20-40 μm.

5. A high refractive index resin lens packaging tape according to claim 1 or 2, characterized in that: The thickness of the primer layer is 3-5 μm.

6. A high refractive index resin lens packaging tape according to claim 1 or 2, characterized in that: The thickness of the organic silicone adhesive layer is 1-2 μm.

7. A high refractive index resin lens packaging tape according to claim 1 or 2, characterized in that: The PET film layer is a PET film structure layer with a thickness of 10-25 μm.

8. A high refractive index resin lens packaging tape according to claim 1 or 2, characterized in that: The thickness of the high temperature resistant silicone pressure sensitive adhesive layer is 20-40 μm.

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