How are acrylic lenses processed?

The processing technology of acrylic lenses is rich and diverse, mainly according to the appearance of the designed product and the performance of the product. Acrylic lenses, the essence of which refers to the general term of PMMA material plate plating, with plastic lenses instead of glass lenses, with light weight, not easy to break, easy to form, easy to color, etc., the development momentum is increasing, in the lens production has become a class of technology. Plastic sheets can generally be made into:

Single-sided mirrors, double-sided mirrors, tape glue mirrors, paper mirrors, semi-lenses, etc. can be done according to different requirements. For example, mobile phones and TV screens can be seen on a daily basis. Acrylic is suitable for secondary processing, such as machining, thermoplastic molding, blow molding, blister molding, solvent gluing, hot printing, screen printing, and vacuum plating.

Acrylic lenses have the advantages of light weight, low price, and easy molding. Its molding methods include casting, injection molding, machining, acrylic thermoforming, etc. In particular, thermoforming is the process of making plexiglass sheets or sheets into products of various sizes and shapes, clamping the blanks cut to the required size on the mold frame, heating to soften them, and then pressurizing them to make them stick to the mold profile to obtain the same shape as the profile, and trimming the edge after cooling and shaping to obtain the product.

Pressurization can be done by vacuum drawing or by pressurizing punches directly with profiles. The thermoforming temperature can be found in Table 3 for the recommended temperature range. When using fast vacuum and low draft forming products, it is advisable to use a temperature close to the lower limit, and when forming deep draft products with complex shapes, it is advisable to use a temperature close to the upper limit, and under normal circumstances, the normal temperature is used.

Acrylic can be used in casting, injection molding, extrusion, thermoforming, laser engraving, laser cutting, and other processes.

1. Casting molding:

Casting molding is used to form plexiglass plates, bars and other profiles, that is, the profile is formed by the bulk polymerization method. The products after casting need to be post-processed, and the post-processing conditions are 60 under 2 hours of heat preservation and 120 times of 2 hours.

2. Injection molding: Injection molding uses the granular material prepared by suspension polymerization, and the molding is carried out on an ordinary plunger or screw injection molding machine. Table 1 shows the typical process conditions for injection molding of polymethyl 1 acrylic 1 ester.

The production requirements for acrylic lenses are also quite exquisite. Acrylic production process. Acrylic sheet can be divided into casting type and extrusion type according to the production process, the performance of the cast type plate is better than that of the extrusion type, and it is more expensive, the cast type of plate is mainly used for carving, decoration, handicraft production, and the extrusion type is usually used for advertising signs, light boxes, etc.

Acrylic lenses contain polar side methyl groups, which have obvious water absorption characteristics, so the production environment must be dry, and after molding, they should be left in a dry place for 4-5 hours. Acrylic has very obvious non-Newtonian fluid characteristics during molding processing, which has a certain influence on the frequency of melt viscosity and cutting velocity, and is also sensitive to temperature changes. Increasing the pressure and temperature can achieve better fluidity.

The temperature at which acrylic produces fluidity is about 160-170°, and the temperature of volatile decomposition is above 270°, so it has a wide range in molding and molding. Because the acrylic cools down very quickly, it will be set after more than ten seconds below the room temperature, so if you want to customize the shape, you need to strictly control the temperature.

1.When cleaning acrylic lenses, it is meant to prevent damage.

With the increase in the use of acrylic mirrors, there will be a layer of gray talk on the mirror, some people directly wipe with a dry towel, and some people go to the toilet directly with a hard towel to wipe, in fact, it is easy to scratch the electroplating layer of acrylic lenses, generally we use soapy water, conditional can give 1% soapy water, and then wipe with a soft towel dipped in soapy water, so that you can wipe it clean, it is not easy to scratch the lens, killing two birds with one stone.

2. It is forbidden to use acrylic lenses at high temperatures.

Acrylic lens is an organic compound of plastic, plastic is afraid of high temperature, many plastics can be molded at high temperature, so acrylic lenses at high temperature can not be used, acrylic lenses should not be used at high temperatures, if the temperature exceeds 85 degrees Celsius, acrylic lenses will be partially damaged.

3. Acrylic lenses cannot be stored with organic materials.

Acrylic lenses are actually a kind of plastic, which is an organic matter and organic matter are stored together, and there will be similar compatibility principles, so acrylic lenses cannot be stored with other organic solvents and cannot be in contact with organic solvents.

4. When storing the acrylic mirror, pay attention to leaving some gaps.

The main reason is also the characteristics of the acrylic lens hall, the acrylic mirror plate or acrylic plate will have some thermal expansion and contraction when heated or heated, which has the characteristics of organic matter itself, according to the change of climate, the acrylic lens will have a slight change, at this time it is necessary to store a gap in the acrylic lens.

Acrylic lens refers to the general term of PMMA material plate after electroplating, and the lens made of glass is replaced by plastic lens, which has the advantages of light weight, not easy to break, convenient molding and processing, and easy coloring. PMMA is polymethyl methacrylate sheet, which is a kind of plexiglass processed by a special process"Plastic Queen"The reputation can generally be made into: single-sided mirror, double-sided mirror, plastic mirror, paper mirror, semi-lens, etc.

Acrylic is the first thing called "plexiglass". Lenses with good impact resistance and no wear resistance.

Acrylic lens mirror panel.

Acrylic (acrylic, plexiglass, PMMA) mirror panel is a lens formed by special technology processing of acrylic sheet, with a clarity of 92%, hard material, scratch-resistant after hardening process, and easy processing.

Acrylic lens mirror panel features.

1. The image is clear and clear, easy to install, the mirror body is light, safe and reliable, anti-sunlight and ultraviolet rays, durable and strong, durable and shatter-proof, only need to be gently cleaned with a soft cloth or sponge and warm water.

2. The bottom plate of the mirror material is an acrylic extrusion plate and an extrusion plate, which has good impact resistance, vacuum plating, safety, environmental protection, new materials, and no flower spots in the product.

Acrylic lens application.

1. It is suitable for convenience stores, large supermarkets, scenic spots, and road turns.

2. Anti-theft in any corner of the factory, parking lot, etc., as well as convenient for the safe driving of vehicles. Also known as reflectors, safety convex mirrors, etc.

3. LED lamps and lanterns reflectors, toy lenses, cosmetic lenses, lighting reflective lenses, daily mirrors, printing, packaging, toys, decoration, lighting, handicrafts, cosmetics, LED lamps and lanterns reflectors and other industries.

Other brands: Ruzi Niu.

Specification: 1220*1830 1220*2440mm, can be customized.

Thickness: , can be customized.

Jiangxi Ruziniu New Material Technology Co., Ltd. is based on polymethyl methacrylate (PMMA) polystyrene (PS) as the main raw material, extruded by extrusion of granules, with good weather resistance and heat resistance, as well as extremely high transparency and gloss, and has stable physical, chemical, optical and electrical characteristics. The products mainly produce PMMA sheets, (plexiglass sheets, acrylic sheets) (extrusion type) process, in which the plates can be produced according to customer requirements, different specifications, different colors, our company has always adhered to the credibility.

1. Adhere to low price and good quality, and do all the pre-sale, in-sale and after-sales service for you! Work with you for a win-win situation and work together to build a long-term strategic partnership. (15382882909 can be contacted).

Acrylic is the material!

Acrylic, also known as PMMA or acrylic, acrylic.

The chemical name is polymethyl methacrylate. Derived from the English organic glass, it refers to the PMMA board made of MMA organic compounds, which is as transparent and transmittance as glass. Acrylic is an important thermoplastic that was developed earlier.

Acrylic products include acrylic sheets, acrylic plastic particles, acrylic light boxes, signboards, acrylic bathtubs, acrylic artificial marble, acrylic resin, acrylic (latex) paint and other products, with a wide range of products. The common acrylic products are acrylic products that are assembled from raw materials such as acrylic granules, plates or resins through various processing methods and with a variety of parts and accessories of different materials and functions. As for the acrylic fiber, acrylic cotton, acrylic yarn, acrylic nylon, etc., which are commonly heard, they refer to man-made fibers polymerized from acrylic acid, and have no relationship with acrylic products.

Acrylic, also known as PMMA, is commonly known as plexiglass, and its chemical name is polymethyl methacrylate. It is an important plastic polymer material developed earlier, with good transparency, chemical stability and weather resistance, easy dyeing, easy processing, beautiful appearance, and has a wide range of applications in the construction industry.

Acrylic lenses with the increase of the number of uses, the appearance will have some gray layer, some people directly use dry paper towels to wipe directly, some people go to the bathroom directly with a hard towel to wipe directly, in fact, it is easy to scratch the electroplating layer of acrylic lenses, usually use soapy water, if there is a condition, you can give 1% soapy water, and then use a soft towel dipped in soapy water to wipe, so that you can wipe clean, and it is not easy to scratch the lens, take two things.

Acrylic lens is a kind of plastic made of organic matter, plastic is afraid of high temperature, many plastics at high temperature, can be injection molded, so acrylic lens is a natural enemy at high temperature, there is also a limit in the use process, we require acrylic lens try not to use at high temperature, if the temperature exceeds 85 degrees Celsius, acrylic lens will be partially damaged.

Acrylic lenses are actually a kind of plastic, which is a kind of organic matter, organic matter and organic matter are stored together, and there will be similar compatibility principles, so acrylic lenses cannot be stored with other organic solvents and cannot be in contact with organic solvents.

This is also a large part of the reason for the characteristics of acrylic lenses, acrylic lenses or acrylic plates will have some thermal expansion and contraction when heated or cold, which is related to the characteristics of its organic matter, according to the change of climate, acrylic lenses will have subtle changes, at this time, it is necessary to leave a gap in the acrylic lenses when storing them.

1.Acrylic contains polar lateral nail 1 base, with obvious hygroscopicity, water absorption rate is general, before molding, the acrylic sheet must be dried, and the drying condition is 80 -85 drying for 4-5h.

2.Acrylic has obvious non-Newtonian fluid characteristics in the temperature range of molding processing, the melt viscosity decreases significantly with the increase of shear rate, and the melt viscosity is also sensitive to temperature changes. Therefore, for the molding of polymethyl 1 acrylic acid methyl 1 ester, increasing the molding pressure and temperature can significantly reduce the melt viscosity and obtain better fluidity.

3.The temperature at which acrylic begins to flow is about 160 and the temperature at which it begins to decompose is higher than 270, with a wide range of processing temperatures. 4.

The viscosity of acrylic melt is high, the cooling rate is fast, and the product is prone to internal stress, so the process conditions are strictly controlled during molding.

5.Acrylic is an amorphous polymer, and the shrinkage rate and its variation range are small, which is generally about the same, which is conducive to molding plastic parts with high dimensional accuracy.

6.The acrylic machinability is excellent and the profiles can be easily machined to a wide range of required sizes.

The integral hot bending process is to hot melt all the acrylic sheets, which need to be fed into the oven. In this process, the acrylic products need to be put into the oven, when the temperature in the oven rises to the melting point of acrylic, the acrylic plate will slowly become soft, and then take out the acrylic products and place them on the mold, and finally slowly cool down and will completely fit on the mold. At that time, it should be noted that the temperature of the oven also needs to be controlled, and it should not rise too high at one time.

After hot melting, the acrylic will gradually harden when it encounters cold air and begin to fix and form. Generally, acrylic photo frames will use this hot bending technique, which is more beautiful and generous, and high-end. The local hot bending is one of the more commonly used in the hot bending process of acrylic products.

The most common is to bend the acrylic heat of the straight plate out of an arc, like a circle, an arc, and so on. There are also some more troublesome local hot bends, such as making an acrylic hot bend at a right angle, but the hot bend is smooth and arc-shaped. This process is to tear off the sticker pasted on the acrylic sheet at this hot bend, use a high-temperature mold rod to hot melt the acrylic edge that needs to be hot-bent, and then use external force to bend it into a right angle.

In this way, the edge of the acrylic product is smooth and curved at a right angle. Some display shelves will use this method, and the products are relatively simple and practical.