Resin lens packaging tape

Abstract

The utility model discloses a resin lens packaging adhesive tape belongs to adhesive tape technical field. It includes release agent layer and sets up on release agent layer, connects through the several structural same adhesive tape unit of rupture line, and adhesive tape unit includes base material layer and adhesive agent layer, and base material layer is bonded in the upside of release agent layer through adhesive agent layer, and the one end of adhesive tape unit is equipped with the injection hole of through base material layer and adhesive agent layer, and every adhesive tape unit can after winding mould a week, the injection hole is covered completely. The present application is through sectional type adhesive tape unit and the design of injection hole, has solved the problem of low operation efficiency, poor sealing precision of traditional whole piece adhesive tape.

Description

Technical Field

[0001] This utility model relates to the field of adhesive tape technology, specifically to a resin lens encapsulation tape. Background Technology

[0002] Resin lens encapsulation tape is a key material used for sealing glass molds. It plays a role in fixing the mold, preventing resin leakage, and protecting the lens edges during the resin lens injection molding process.

[0003] Currently, some resin lens injection and sealing processes still rely on manual operation. The existing manual method is as follows: during sealing, tape is applied to the mold around one ring, overlapping it by a certain distance. During injection, the tape is manually peeled off to expose the seal, the resin is injected into the mold, and then the seal is manually reapplied. The problems with this existing method are:

[0004] 1. Manually peeling off tape requires precise control of the peeling length, which takes a long time per operation and results in low production efficiency.

[0005] 2. Improper control of the bonding force: too loose and it will easily lead to leakage; too tight and it will easily leave glue residue and contaminate the mold.

[0006] 3. If the force is not properly controlled when peeling off the tape, adhesive residue may remain on the edge of the mold or the surface of the lens, causing white spots or stains on the lens, requiring rework or scrapping. Utility Model Content

[0007] To address the aforementioned problems, this utility model provides a high-refractive-index resin lens encapsulation tape.

[0008] The technical solution adopted in this utility model is:

[0009] A resin lens encapsulation tape includes a release agent layer and several identical tape units disposed on the release agent layer and connected by a break line. Each tape unit includes a substrate layer and an adhesive layer. The substrate layer is bonded to the upper side of the release agent layer through the adhesive layer. One end of each tape unit is provided with an injection hole that penetrates the substrate layer and the adhesive layer. Each tape unit can completely cover the injection hole after wrapping around the mold once.

[0010] Furthermore, the thickness of the release agent layer is 1–2 μm.

[0011] Furthermore, the thickness of the substrate layer is 25–100 μm.

[0012] Furthermore, the thickness of the release agent layer is 10–30 μm.

[0013] Furthermore, the injection hole is either round or rectangular.

[0014] Furthermore, the distance between the edge of the injection hole and the fracture line is 2–5 mm.

[0015] The beneficial effects of this utility model are as follows: By using a segmented tape unit structure and an injection hole design, the problems of low operation efficiency and poor sealing accuracy of traditional tapes are solved; the structural design of the segmented tape unit improves the convenience and repeatability of manual operation, and the structural design of the injection hole improves the accuracy of liquid injection and increases injection efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the resin lens encapsulation tape structure of this application.

[0017] Figure 2 for Figure 1 A longitudinal sectional view. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solution of this utility model will be clearly and completely described below in conjunction with the accompanying drawings and a preferred embodiment.

[0019] See Figure 1 and Figure 2 This application provides a resin lens encapsulation tape, including a release agent layer 13 and several structurally identical tape units disposed on the release agent layer and connected by break lines 15, such as... Figure 1 The portion of the tape shown includes a first tape unit 101, a second tape unit 102, and a third tape unit 103. Each tape unit includes a substrate layer 11 and an adhesive layer 12. The substrate layer 11 is bonded to the upper side of the release agent layer 13 through the adhesive layer 12. At one end of each tape unit, near the break line 15, there is an injection hole 14 that penetrates the substrate layer 11 and the adhesive layer 12. Each tape unit can completely cover the injection hole 14 after wrapping around the mold once.

[0020] The release agent layer 13, adhesive layer 12, and substrate layer 11 described in this application are prior art and can be made of conventional materials. The thickness of the release agent layer is preferably 1–2 μm; the thickness of the substrate layer is preferably 25–100 μm; and the thickness of the release agent layer is preferably 10–30 μm.

[0021] The width of the tape unit should match the width of the mold edge, preferably between 10 and 30 mm, to match conventional molds and avoid wasting material due to excessive width or causing poor sealing due to excessive narrowness. The length of the tape unit is calculated in segments based on the mold circumference. For example, if the mold circumference is 200 mm and the repeating portion is 10 mm, the tape unit length is approximately 210 mm.

[0022] The fracture line 15 is a common indentation or easy-tear line, which can be formed on the substrate layer by indentation process (mechanical pressure roller) or laser micro-engraving.

[0023] The injection hole 14 is close to the edge of the mold sealing. The distance A between the edge of the injection hole and the break line is preferably 2-5mm. If the distance is too small, the integrity of the injection hole will be easily damaged during pasting. If the distance is too large, it will waste material.

[0024] In this embodiment, the injection hole is circular, and its diameter is adapted to the mold sealing width, preferably 0.5-2 mm, to avoid resin overflow due to excessive size or injection speed being affected by insufficient size. In other embodiments, the injection hole may also be square or rectangular.

[0025] Injection holes can be formed by ablating micropores on the substrate and adhesive layer using CO2 or ultraviolet laser.

[0026] The preparation method of the above-mentioned encapsulating tape is as follows:

[0027] 1. Unwind the substrate roll (such as PET film) and maintain its flatness by controlling the tension;

[0028] 2. Apply adhesive to the substrate surface (slot coating or roller coating), with the coating thickness controlled between 10 and 30 μm;

[0029] 3. The composite release agent layer (such as silicone oil coated release paper) is compacted by hot press rollers to form a composite structure of "substrate-adhesive-release layer";

[0030] 4. After lamination, the tape roll is pressed with fracture lines or laser micro-engraved grooves at preset intervals (e.g., every 210mm).

[0031] 5. Use laser drilling equipment to process injection holes to ensure the accuracy of hole diameter, hole depth, and position;

[0032] 6. Rewind the processed tape using a rewinding machine.

Claims

1. A resin lens encapsulation tape, characterized in that, The mold includes a release agent layer and several identical tape units connected by a break line on the release agent layer. Each tape unit includes a substrate layer and an adhesive layer. The substrate layer is bonded to the upper side of the release agent layer through the adhesive layer. One end of each tape unit has an injection hole that penetrates the substrate layer and the adhesive layer. Each tape unit can completely cover the injection hole after wrapping around the mold once.

2. The resin lens encapsulation tape according to claim 1, characterized in that, The thickness of the release agent layer is 1–2 μm.

3. The resin lens encapsulation tape according to claim 1, characterized in that, The thickness of the substrate layer is 25–100 μm.

4. The resin lens encapsulation tape according to claim 1, characterized in that, The thickness of the release agent layer is 10–30 μm.

5. The resin lens encapsulation tape according to claim 1, characterized in that, The injection hole can be round or rectangular.

6. The resin lens encapsulation tape according to claim 1, characterized in that, The distance between the edge of the injection hole and the break line is 2-5 mm.

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