TW201915054A - Method for manufacturing UV prevention and blue light blocker PC lens capable of providing relatively stable UV prevention and blue light blocker functions - Google Patents

Abstract

The present invention relates to a method for manufacturing UV prevention and blue light blocker PC lens, which comprises the steps of: (1) dissolving PC (polycarbonate) plastic material; (2) adding a UV agent (protecting agents ultraviolet absorber); (3) adding a liquid coloring agent; (4) mixing and dissolving the PC plastic material, the UV agent, and the liquid coloring agent; (5) feeding the mixture liquid obtained from sufficiently mixing the PC plastic material, the UV agent and the liquid coloring agent into a material drawing machine to perform material re-drawing, and forming substrate plastic pellets of small piece by cutting; (6) baking the substrate plastic pellets; and (7) feeding the dried substrate plastic pellets into an injection molding machine so as to manufacture a PC lens with UV prevention and blue light blocker functions by using a mold, thereby providing relatively stable UV prevention and blue light blocker functions.

Description

 Anti-UV, anti-blue light PC lens manufacturing method  

The invention relates to a method for preparing an anti-UV and anti-blue light PC lens, in particular to mixing and dissolving a required PC plastic, a UV agent and a liquid coloring agent, and then re-pulling to obtain anti-UV and anti-blue light. The substrate plastic of efficacy, and then injection molding a PC lens, provides a more stable anti-UV and anti-blue light effect.

We all know that ultraviolet light (UV) in the light is harmful to human skin, so when going out, it will protect the skin by sunscreen (wiping sunscreen, umbrella, etc.). In addition, the eyes are the window of the soul. If our eyes are long-term. Exposure to sunlight will also cause harm. Please refer to Figure 6. If ultraviolet light is absorbed by the cornea and crystals of the eye, it will damage our vision. It is very important to protect the eyes from ultraviolet radiation. Therefore, there are sunglasses. Produced, of course, sunglasses mainly use different colors of the lens to filter the light, the lens is often black or dark, can avoid the sun (especially ultraviolet) to stimulate the eye, so it is also called sunglasses, but wear After the sunglasses, the pupils will automatically become larger due to the reduced light entering the eyes. If there is no UV filtering function, the ultraviolet rays will cause more serious damage to the eyes. Therefore, since April 15, 2008, the domestic factory or foreign customs clearance imports to Taiwan’s sunglasses must pass the Standards Inspection Bureau of the Ministry of Economic Affairs, the Plastics Industry Technology Development Center or Taiwan Electronics. Inspection center testing must be UV-resistant (up to UV400) to be sold. However, for normal-corrected glasses, if you want to have UV protection, please refer to Figure 5, a UV-resistant lens commonly used in the industry. 9, there is a coating layer 902 on the lens substrate 901, because the coating layer 902 is coated on the outer surface of the lens substrate 901, so that the surface of the lens is yellowish, if the barrier rate is increased, the lens will be seen. The color produces a large color difference, which affects the color discrimination in life. Moreover, it is known that the lens substrate 901 has an anti-UV lens 9 with a coating layer 902. When the glasses are cleaned, water marks may invade the inner layer of the lens to cause the coating layer 902. Permanent damage, in addition to easy peeling off and affecting the appearance of the lens, will also affect the anti-UV function of the lens, resulting in poor anti-UV function of the anti-UV lens. In addition, recent research found that in addition to ultraviolet light In addition to the damage caused by our eyes, the shorter wavelengths of 400 nm to 420 nm in visible light - commonly known as blue light - can also damage the most fragile tissue of the human eye - the retina, and blue light It may also be one of the causes of accelerating age-related macular degeneration and cataract formation, which may even lead to blindness. It is therefore also important to block high-energy visible light of 400 nm-420 nm which may cause damage to the eye tissue! The most powerful anti-UV lens can only block high-energy visible light of about 400 nm, and does not have any protective effect on high-energy visible light (blue light) of 400 nm-420 nm, which is a defect for which it is urgently to be improved.

Based on the above-mentioned shortcomings, the present inventors actively developed, researched and improved, and launched the "method of making UV-resistant and anti-blue-light PC lenses" to improve the solution to the above-mentioned related products.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method for producing an anti-UV and anti-blue light PC lens, which has a more stable anti-UV and anti-blue light effect.

Therefore, in order to achieve the above object and effect, the invention provides a method for manufacturing an anti-UV and anti-blue LED lens, comprising: step (1): dissolving PC (polycarbonate) plastic; step (2): in step (1) adding a UV agent (Protecting Agents ultraviolet absorber) to the dissolved PC (polycarbonate) plastic; step (3): adding the UV agent (Protecting Agents ultraviolet absorber) in step (2) a liquid dye is then added to the PC (polycarbonate) plastic; step (4): mixing the PC (polycarbonate) plastic, the UV agent, and the liquid colorant; step (5): step ( 4) the PC (polycarbonate) plastic, the UV agent, and the mixture of the liquid coloring agent dissolved in the medium are fed into the pumping machine to perform a re-pulling operation, and are formed into a short piece and a small section. PC plastic UV agent, liquid coloring agent substrate plastic particle; step (6): the substrate plastic pellet prepared by re-feeding in step (5) is subjected to a baking action; step (7): step (6) The substrate is filled with plastic pellets and sent to the injection molding machine to form a PC lens with anti-UV and anti-blue light effects.

A further technical feature of the present invention is that the weight of the PC (polycarbonate) plastic is about 95% of the total weight, the weight of the UV agent (Protecting Agents) is about 4% by weight of the total weight, and the liquid is dyed. The weight of the agent is about 1% of the total weight.

A further technical feature of the invention is that the liquid stain can be blue.

A further technical feature of the invention is that the liquid stain can be yellow.

A further technical feature of the present invention resides in that the baking action of the substrate plastic pellets produced by re-feeding in step (5) is about 4 hr (hours).

In combination with the above technical features described in the present invention, the advantage is that PC (polycarbonate) plastic, UV agent, and liquid dyeing agent are mixed and dissolved, and then re-drawn to form a base plastic pellet. Then, the PC lens is formed by injection molding the plastic pellet containing the PC (polycarbonate) plastic, the UV agent, and the liquid dyeing agent to provide a more stable anti-UV and anti-blue light effect. The anti-UV lens of the anti-UV lens is easy to peel off and fall off, and the drawbacks of its anti-UV effect are unstable, and the disadvantages of the conventional solar glasses and the anti-UV lens are not high, and the anti-blue light effect is not used. The invention can be said to be a kind of creation with considerable practicability and progress, which is quite worthy of promotion by the industry and publicized to the public.

 <Technical Field of the Invention>  

1‧‧‧PC plastic

2‧‧‧UV agent

3‧‧‧Liquid stain

4‧‧‧ mixture

41‧‧‧round filament

5‧‧‧Pumping machine

6‧‧‧Substrate plastic pellets

7‧‧‧Injection molding machine

71‧‧‧Mold

8‧‧‧ lenses

 <Utility Technology>  

9‧‧‧Anti-UV lenses

901‧‧‧ lens substrate

902‧‧‧ coating layer

The first figure is a block diagram of a method for manufacturing an anti-UV and anti-blue light PC lens of the present invention.

The second figure is a schematic flow chart of a method for manufacturing an anti-UV and anti-blue light PC lens of the present invention.

The third figure is a schematic representation of a method for producing a UV- and Blu-ray resistant PC lens of the present invention.

The fourth figure is a schematic cross-sectional view of a lens structure made by the method for manufacturing the anti-UV and anti-blue-light PC lens of the present invention.

The fifth figure is a schematic cross-sectional view of a conventional anti-UV lens structure.

The sixth picture is a schematic diagram of the relationship between the human eye structure and light.

In order to clearly illustrate the above objects and effects of the present invention, the features and effects of the present invention will be described in detail with reference to the accompanying drawings. The method for preparing an anti-UV and anti-blue LED lens of the present invention, as shown in the first to fourth figures, comprises: step (1): dissolving PC (polycarbonate) plastic 1; step (2): Adding UV agent 2 (Protecting Agents UV absorber) to the PC (polycarbonate) plastic 1 which has been dissolved in step (1); Step (3): Adding UV agent 2 (Protecting Agents UV) in step (2) a liquid dye 3 in the PC (polycarbonate) plastic 1 of the absorbent); step (4): dissolving the PC (polycarbonate) plastic 1, the UV agent 2, and the liquid dye 3 Step (5): feeding the PC (polycarbonate) plastic 1, the UV agent 2, and the liquid dye 3 mixed solution 4, which are sufficiently dissolved in the step (4), into the pumping machine 5, and performing Re-pumping action, the mixed liquid 4 is first drawn into a long circular filament 41, and finally cut into a short piece of plastic material 6 containing PC plastic, UV agent, liquid dyeing agent; Step (6): the substrate plastic pellet 6 which is re-pulled in the step (5) to be pelletized is subjected to a baking action; and the step (7): the substrate plastic pellet which is dried in the step (6) 6 send The injection molding machine 7 is formed by the mold 71 to form a PC lens 8 having anti-UV and anti-blue light effects. (The foregoing is the main technical feature of the main embodiment of the present invention, which corresponds to the content of the first item of the patent application scope of the present invention, and the object and the embodiment of the present invention are known in detail, and the technical features described in the remaining subsidiary patent scopes are For the detailed description or additional technical features of the first content of the patent application scope, rather than to limit the scope of the first paragraph of the patent application scope, it should be noted that the first item of the scope of patent application in this case does not necessarily include the scope of the remaining subsidiary patents. Technical features described).

First of all, it needs to be stated that PC resin lenses have strong advantages in quality, impact resistance, safety, and UV absorption compared with conventional glass lenses, and are easy to process and widely used. The choice of large refractive index and thin thickness makes it suitable for making half-frame and frameless lenses, making the product series made of PC lenses rich and diversified. PC lenses are also called bulletproof glass and space lenses. For students who need more outdoor exercise, the PC lens material is very light, and the impact resistance is very high, which can avoid eye damage during exercise. It is the main material of choice for making safety glasses; therefore, the present invention uses the PC. The plastic 1 is used as a substrate, and the UV agent 2 and the liquid dye 3 are added, and the three main components are mixed and dissolved by heating, and then the PC plastic 1, the UV agent 2, and the liquid are contained. The mixture 4 of the dyeing agent 3 is fed into the pumping machine 5 for re-picking operation, and the purpose of this processing step is to keep the individual characteristics and advantages of all the components in the heating. In the melted mixture 4, and after the round liquid 41 of the strip is re-drawn in the mixed liquid 4, and cut into a small length of the base plastic pellet 6, the PC plastic 1 is uniformly The effects of the UV agent 2, the liquid dye 3, and the like remain in the plastic pellets 6 of the substrate. Therefore, the extracted plastic pellets 6 are then fed into the injection molding machine 7. The PC lens 8 produced by the method of the present invention has the characteristics of providing safe impact resistance, light weight and belt comfort provided by the PC plastic 1, and is provided by the UV agent 2. Absorbs UV rays, prevents UV rays from penetrating through the lens, and prevents UV rays from damaging the eyes, and the liquid dye 3 (whether blue or yellow) can impart various colors to the PC lens 8 (blue) Or yellow), it can filter light and block the effect of high-energy visible light (blue light) of 400nm-420nm penetrating through the lens. The anti-UV and anti-blue light PC lens 8 made by the method of the invention is suitable for students with a large number of outdoor sports. Wear to protect the user's eyes Avoid UV and blue light damage to the eyes caused, can really achieve the desired purpose of creation have the best results.

As described above, in the preparation method of the present invention, the weight of the PC (polycarbonate) plastic 1 is about 95% of the total weight, and the weight of the UV agent 2 (Protecting Agents ultraviolet absorber) is about 4% of the total weight. %, the liquid dye 3 is about 1% by weight of the total weight, and the liquid dye 3 may be blue or yellow; that is, in the embodiment of the present specification, the PC (polycarbonate) plastic 1 is about 950g, the UV agent 2 is about 40g, and the liquid dye 3 is added to a ratio of about 10g; in addition, the substrate plastic pellet 6 produced by re-feeding is subjected to the step (5) for about 4 hr (hours). After the baking operation, the injection molding machine 7 can be placed in the injection molding process; of course, the PC (polycarbonate) plastic 1 and the UV agent 2 contained in the base plastic pellet 6 (Protecting Agents) The ratio of the ultraviolet absorbing agent), the liquid coloring agent 3, and the like is only a preferred embodiment of the present invention, and the length of time required for the drying operation (about 4 hr) is only a better empirical value obtained by actual testing, and is not The technical features for limiting the present invention are indicated herein; and according to the above, the P made by the manufacturing method of the present invention The C lens 8 is prepared by dissolving and mixing the three components of the PC plastic 1, the UV agent 2 and the liquid dye 3, and then re-pulling to prepare a new one containing PC plastic 1, UV agent 2, liquid dyeing. The substrate plastic pellet 6 of the component 3 and the like is further injected to form the PC lens 8. The PC lens 8 made by the method of the present invention contains the UV preventing effect of the UV agent 2, and is not used for coating. The anti-UV lens 9 is made to be water-resistant and easy to peel off, resulting in poor UV-proof function. The PC lens 8 made by the method of the present invention contains a liquid dye 3 capable of blocking 400 nm to 420 nm. High-energy visible light (blue light), which provides the anti-blue light effect, can completely eliminate the drawbacks of the conventional anti-UV lens 9 that cannot block high-energy visible light (blue light).

In summary, the method for manufacturing the anti-UV and anti-blue LED lens of the present invention provides a relatively stable anti-UV and anti-blue light effect, and the invention is practical and can improve the use of the conventional anti-UV lens and the sunglasses. Therefore, the invention relates to a "method for preventing UV and blue light resistant PC lenses", and its practicability is in line with the development of the industry, and the disclosed invention is also unprecedented and novel. The invention of the present invention is more effective and progressive, and it should be undoubtedly considered. It fully complies with the application requirements of the patent law of China, and is a patent application according to law, so please review it and give affirmation.

Claims (5)

 A method for preparing an anti-UV and anti-blue light PC lens, comprising: step (1): dissolving PC (polycarbonate) plastic; and step (2): dissolving the PC (polycarbonate) in step (1) Adding UV agent (Protecting Agents UV absorber) to the plastic; Step (3): Adding liquid dyeing to the PC (polycarbonate) plastic which has been added with UV agent (Protecting Agents UV absorber) in step (2) a step (4): mixing the PC (polycarbonate) plastic, the UV agent, and the liquid coloring agent; and the step (5): partially dissolving the PC in the step (4) (polycarbonate) a mixture of plastic, the UV agent, and the liquid coloring agent is fed into the pumping machine to perform a re-pulling operation, and is formed into a short piece of a plastic pellet containing a PC plastic UV agent and a liquid coloring agent. Step (6): performing the baking action of the plastic pellet of the substrate prepared by re-feeding in the step (5); and (7): feeding the plastic pellet of the substrate which is dried in the step (6) The injection molding machine uses a mold to make a PC lens with anti-UV and anti-blue light effects.    The method for preparing an anti-UV and anti-blue light PC lens according to claim 1, wherein the PC (polycarbonate) plastic is about 95% by weight of the total weight, and the UV agent (Protecting Agents UV absorber) The weight of the liquid dye is about 4% of the total weight, and the weight of the liquid dye is about 1% of the total weight.    A method of producing a UV- and Blu-ray resistant PC lens according to the second aspect of the invention, wherein the liquid coloring agent is blue.    The method for producing an anti-UV, anti-blue light PC lens according to claim 2, wherein the liquid coloring agent is yellow.    The method for producing a UV- and Blu-ray resistant PC lens according to any one of claims 1 to 4, wherein in the step (5), the substrate is made of a plastic material. The baking action was carried out for about 4 hr (hours).