Degradable mold supporting adhesive tape for resin lens

Abstract

The utility model discloses a degradable mould supporting adhesive tape for a resin lens, which comprises an adhesive tape base material and an adhesive layer compounded on the adhesive tape base material, one side area of the adhesive layer is compounded with a composite supporting layer for supporting, and the other side area of the adhesive layer forms a bonding area. The degradable mold supporting adhesive tape for the resin lens is reasonable in design, and the bonding part can provide bonding and sealing effects for lens forming; and the non-sticky composite layer can play a supporting role, so that abrasion and loss caused by direct contact between the mold and the metal frame are avoided, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of adhesive tapes for producing resin lenses, in particular to a degradable mould supporting adhesive tape for resin lenses. Background Art

[0002] Currently, lens manufacturers have varying degrees of technological sophistication. The lens manufacturing process includes mold assembly, opening and injection molding, high-temperature curing, polishing, and cleaning. This process is primarily manual, and individual techniques vary, making lens quality difficult to guarantee. This leads to a high breakage rate during the manufacturing process, which explains why the bill of materials (BOM) for a single lens can be very low, while the price of a pair of glasses can be very high. For high-temperature curing, current technology typically places the mold with the curved side facing downward, directly on a metal frame. This method presents two issues. First, the mold is made of glass and then surface-treated to ensure a smooth and transparent lens. This process directly contacts the metal frame, resulting in a certain breakage rate. Over time, this can cause wear and tear, affecting the smoothness and transparency of the mold. Second, the curved side of the mold directly contacts the metal frame, while the rest of the mold is exposed to air. This transfers more heat through the metal frame, while less heat is transferred to the mold through the air. Consequently, the mold temperature on the curved side is higher than elsewhere, causing the resin to cure earlier. This localized curing can lead to issues with lens brightness.

[0003] The adhesive tape used in existing technologies is mostly for sealing liquids, ensuring a seal, but provides little protection for the mold during the manufacturing process. Existing technologies focus more on the quality of the finished lenses, while paying little attention to the losses incurred during the manufacturing process, and even less on the concept of sustainable development. For example, patent CN 114958220A discloses an adhesive tape for encapsulating resin lenses, comprising a base layer, an adhesive layer, and a release layer. The base layer is a polyester film material layer, one side of which is coated with the adhesive layer, and the other side of which is coated with the release layer. This tape lacks support, allowing the mold to contact the metal frame, affecting product quality. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a degradable mold support tape for resin lenses, the non-adhesive composite layer of which can play a supporting role and improve product quality.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The degradable mold supporting tape for resin lenses comprises a tape base material and an adhesive layer compounded on the tape base material. One side of the adhesive layer is compounded with a composite supporting layer for supporting, and the other side of the adhesive layer forms a bonding area.

[0007] Further:

[0008] The adhesive tape substrate and the composite support layer are film layers made of the same material.

[0009] The adhesive tape substrate and the composite support layer are both PLA layers.

[0010] The adhesive layer is a water-based glue layer.

[0011] The width of the bonding area is 12-20 mm.

[0012] The width of the composite support layer is 5mm-8mm.

[0013] The thickness of the composite support layer is greater than that of the adhesive layer.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The degradable mold support tape for resin lenses is reasonably designed, and the bonding parts can provide bonding and sealing effects for lens molding; the non-adhesive composite layer can play a supporting role, preventing the mold from directly contacting the metal frame to cause wear and loss, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a brief description of the contents and symbols in the drawings of this specification:

[0017] Figure 1 This is a schematic diagram of the tape layer structure of the utility model.

[0018] Figure 2 This is a front view of the adhesive tape of the present invention.

[0019] In the picture:

[0020] 1. Tape base material, 2. Adhesive layer, 3. Composite support layer. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown, the degradable mold support tape for resin lenses includes a tape substrate 1 and an adhesive layer 2 composited on the tape substrate; one side of the adhesive layer is composited with a composite support layer 3 that plays a supporting role, and the other side of the adhesive layer forms a bonding area.

[0023] The tape substrate and the composite support layer are film layers made of the same material. The composite support layer does not have an adhesive effect, but only serves to strengthen support. The bonding area can provide adhesion and sealing effects for lens molding. The non-adhesive composite layer can play a supporting role, preventing the mold from directly contacting the metal frame, causing wear and loss, and improving product quality.

[0024] The tape base and composite support layer are both PLA layers. Existing technologies mostly use PET as a base material, which is a non-degradable material and inevitably generates a large amount of plastic pollution during use. The present invention uses biodegradable materials for both the base and support layer, making it environmentally friendly.

[0025] The adhesive layer is a water-based glue layer; preferably, the glue is a water-based acrylic glue to avoid contamination by oily solvents.

[0026] The width of the bonding area is 12-20 mm; the width of the composite support layer is 5-8 mm; the thickness of the composite support layer is greater than that of the adhesive layer, thereby improving the support effect.

[0027] The specific implementation process is:

[0028] Glue preparation: Mix isopropyl alcohol solvent and glue in a 1:1 ratio and stir evenly. The boiling point of isopropyl alcohol is 82 degrees and it can be dried at a lower temperature.

[0029] Coating: The tape substrate is preferably biodegradable PLA film, and the glue is water-based polyacrylate glue. First, the PLA substrate is corona treated to enhance adhesion, with a corona voltage of 0.8kV. The polyacrylate glue is then applied to the PLA film using direct coating, which provides better adhesion. The coating temperature is 90°C, the coating speed is 0.4m / min, and the oven temperatures are 50 / 75 / 90 / 75°C to ensure the adhesive surface can be dried at a relatively low speed.

[0030] Lamination: Use 10-16mm wide PLA adhesive surface to roll up, with an interval of 24-40mm.

[0031] Slitting: The slitting machine cuts the PLA in half along the laminating area, and the width of the finished roll is 12-20mm on the adhesive surface and 5-8mm on the non-adhesive surface.

[0032] Application: During the mold closing process, place the tape at the corresponding winding position and rotate the roller to wind the tape around the mold. After the injection is completed, place the mold with the larger curvature downward. The non-adhesive composite layer of the tape supports the mold, which is equivalent to an air-free state to avoid wear.

[0033] The utility model aims to solve the problem that the mold will be worn out after long-term use, affecting the smoothness and permeability of the mold, and at the same time, provide a way to realize the degradability of the tape used in the process.

[0034] The above is only an illustration of a preferred embodiment of the present invention. The above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0035] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A degradable mold support tape for a resin lens, comprising a tape substrate and an adhesive layer composited on the tape substrate, characterized in that: One side area of ​​the adhesive layer is compounded with a composite supporting layer that plays a supporting role, and the other side area of ​​the adhesive layer forms a bonding area.

2. The biodegradable mold support tape for resin lenses according to claim 1, wherein: The adhesive tape substrate and the composite support layer are film layers made of the same material.

3. The degradable mold support tape for resin lenses according to claim 1 or 2, characterized in that: The adhesive tape substrate and the composite support layer are both PLA layers.

4. The biodegradable mold support tape for resin lenses according to claim 1, wherein: The adhesive layer is a water-based glue layer.

5. The biodegradable mold support tape for resin lenses according to claim 1, wherein: The width of the bonding area is 12-20 mm.

6. The degradable mold support tape for resin lenses according to claim 5, characterized in that: The width of the composite support layer is 5mm-8mm.

7. The degradable mold support tape for resin lenses according to claim 6, wherein: The thickness of the composite support layer is greater than that of the adhesive layer.

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