Frequently Asked Questions (FAQ) - Polycarbonate Extrusion Manufacturers   Q1: What is polycarbonate extrusion? A1: Polycarbonate extrusion is a manufacturing process that involves pushing molten polycarbonate resin through a shaped die to create continuous profiles or sheets. This process is commonly used for producing various products with specific shapes and dimensions.   Q2: What are the advantages of using polycarbonate in extrusion? A2: Polycarbonate offers high impact resistance than acrylic, optical clarity, and excellent dimensional stability. Its versatility makes it suitable for a wide range of applications, and the extrusion process allows for the creation of complex shapes with consistent quality.   Q3: What types of products can be manufactured through polycarbonate extrusion? A3: Polycarbonate extrusion can be used to produce profiles, sheets, tubes, and other customized shapes. Common applications include: Construction and Interior Design、Lighting Products、Industrial Applications、Transportation、Electronics、Protective Packaging、Medical Equipment.   Q4: How does the extrusion process impact the optical properties of polycarbonate? A4: The extrusion process, when performed with precision and proper conditions, ensures that polycarbonate maintains its optical clarity. However, it's essential to follow recommended extrusion parameters to prevent issues such as haze or discoloration. The melt temperature control, cooling rate, mold design and calibration, resin quality, post-extrusion treatment, etc. in the extrusion process are all possible influencing factors.   Q5: What should I consider when choosing a polycarbonate extrusion manufacturer? A5: When selecting a manufacturer, consider their experience, production capabilities, quality control measures, and adherence to industry standards. Additionally, reviews and references can provide insights into the manufacturer's reputation and reliability. However, SMEACRYLIC have 40 years of experience in PC production and have produced beer tubes, lampshades, pneumatic tube, precision parts packaging, medical equipment applications, etc.     Q6: Can polycarbonate extrusions be customized for specific project requirements? A6: Yes, many polycarbonate extrusion manufacturers offer customization services. This includes tailored profiles, colors, and dimensions to meet the unique specifications of your project. Q7: Polycarbonate tube standard sizes is as below :   Outter Dia. (mm) Inner Dia. (mm) Thickness (mm) Outter Dia. Tolerance Length (mm) 5 3 1 ± 0.15 2000 6 4 1 ± 0.15 2000 7 5 1 ± 0.15 2000 8 6 1 ± 0.15 2000 8 5 1.5 ± 0.15 2000 10 8 1 ± 0.20 2000 10 7 1.5 ± 0.20 2000 10 6 2 ± 0.20 2000 12 10 1 ± 0.20 2000 12 8 2 ± 0.20 2000 12 6 3 ± 0.20 2000 13 9 3 ± 0.20 2000 13 7 3 ± 0.20 2000 14 10 2 ± 0.20 2000 14 8 3 ± 0.20 2000 15 13 1 ± 0.20 2000 15 11 2 ± 0.20 2000 15 9 3 ± 0.20 2000 16 12 2 ± 0.30 2000 16 10 3 ± 0.30 2000 18 14 2 ± 0.30 2000 18 12 3 ± 0.30 2000 20 18 1 ± 0.30 2000 20 16 2 ± 0.30 2000 20 14 3 ± 0.30 2000 22 18 2 ± 0.30 2000 22 16 3 ± 0.30 2000 25 21 2 ± 0.40 2000 25 19 3 ± 0.40 2000 28 24 2 ± 0.40 2000 28 22 3 ± 0.40 2000 30 26 2 ± 0.40 2000 30 24 3 ± 0.40 2000 30 22 4 ± 0.40 2000 30 20 5 ± 0.40 2000 32 28 2 ± 0.40 2000 32 26 3 ± 0.40 2000 32 24 4 ± 0.40 2000 35 31 2 ± 0.40 2000 35 29 3 ± 0.40 2000 38 34 2 ± 0.40 2000 38 32 3 ± 0.40 2000 38 30 4 ± 0.40 2000 38 38 5 ± 0.40 2000 40 36 2 ± 0.40 2000 40 34 3 ± 0.40 2000 40 32 4 ± 0.40 2000 40 30 5 ± 0.40 2000 45 41 2 ± 0.40 2000 45 39 3 ± 0.40 2000 45 37 4 ± 0.40 2000 45 35 5 ± 0.40 2000 50 46 2 ± 0.40 2000 50 44 3 ± 0.40 2000 50 42 4 ± 0.40 2000 50 40 5 ± 0.40 2000 60 56 2 ± 0.40 2000 60 54 3 ± 0.40 2000 60 52 4 ± 0.40 2000 60 50 5 ± 0.40 2000 70 66 2 ± 0.60 2000 70 64 3 ± 0.60 2000 70 62 4 ± 0.60 2000 70 60 5 ± 0.60 2000 80 76 2 ± 0.60 2000 80 74 3 ± 0.60 2000 80 72 4 ± 0.60 2000 80 70 5 ± 0.60 2000 90 86 2 ± 0.60 2000 90 84 3 ± 0.60 2000 90 82 4 ± 0.60 2000 90 80 5 ± 0.60 2000 100 96 2 ± 0.80 2000 100 94 3 ± 0.80 2000 100 92 4 ± 0.80 2000 100 90 5 ± 0.80 2000 110 104 3 ± 1.00 2000 110 102 4 ± 1.00 2000 110 100 5 ± 1.00 2000 120 114 3 ± 1.00 2000 120 112 4 ± 1.00 2000 120 110 5 ± 1.00 2000 125 119 3 ± 1.00 2000 125 117 4 ± 1.00 2000 125 115 5 ± 1.00 2000 130 124 3 ± 1.20 2000 130 122 4 ± 1.20 2000 130 120 5 ± 1.20 2000 133 127 3 ± 1.20 2000 133 125 4 ± 1.20 2000 133 123 5 ± 1.20 2000 140 134 3 ± 1.20 2000 140 132 4 ± 1.20 2000 140 130 5 ± 1.20 2000 150 144 3 ± 1.20 2000 150 142 4 ± 1.20 2000 150 140 5 ± 1.20 2000 160 154 3 ± 1.50 2000 160 152 4 ± 1.50 2000 160 150 5 ± 1.50 2000 170 164 3 ± 1.50 2000 170 162 4 ± 1.50 2000 170 160 5 ± 1.50 2000 180 174 3 ± 1.80 2000 180 172 4 ± 1.80 2000 180 170 5 ± 1.80 2000 185 179 3 ± 1.85 2000 185 177 4 ± 1.85 2000 185 175 5 ± 1.85 2000 200 194 3 ± 2.00 2000 200 192 4 ± 2.00 2000 200 190 5 ± 2.00 2000 ※ Be able to customize a variety of colors and sizes. ※ Please click here to see the specifications of our Extruded Polycarbonate Tube.   Q8: Are there any environmental considerations with polycarbonate extrusion? A8: Polycarbonate is a recyclable material, and the recycling of plastic helps reduce the need for new raw materials while reducing the impact of plastic waste on the environment. PC is usually marked with recycling number "7". The recycling numbers of other plastics can be referred to as follows:   Q9: How can I request a quote for polycarbonate extrusion services? A9: To receive a quote, contact us SMEACRYLIC through email:[email protected] provide detailed information about your project, including design specifications, quantities, and any special requirements.   Q10: What quality control measures are in place during polycarbonate extrusion? A10: SMEACRYLIC implement stringent quality control measures, including regular inspections, testing for physical properties, and adherence to industry standards. Certifications such as ISO9001 can indicate a commitment to quality.

Q: Extrusion acrylic process?     SMEACRYLIC is the leader in extrusion manufacturing in Southeast Asia. It has 40 years of extrusion experience. The extrusion process is granular PMMA, which is heated and melted into a molten state. Then, the plastic material is pushed into the mold by extrusion. , and then set by water cooling. After cooling and setting, it will be cut according to the required length. The extruded acrylic products will produce round tubes (rods) or special-shaped products according to different mold shapes. Acrylic extrusion process steps：   1. Material preparation: Melt the acrylic raw material (PMMA particles), usually using a dedicated acrylic extruder. Acrylic is usually supplied in granular form, and different raw materials can be selected according to needs, such as transparency, color, light transmittance, etc.   2. Melting and homogeneous mixing: In the extruder, the acrylic pellets are heated and melted into a fluid state. At the same time, some additives, such as stabilizers, pigments, etc., are usually added to adjust the characteristics and appearance of the product.   3. Extrusion Extrusion: The acrylic melt passes through the screw shaft of the extruder and enters a metal mold with a shape similar to the final product. The shape of the mold can be designed according to the desired product. The acrylic flows through the mold, forming the desired shape.   4. Cooling and curing: Once the acrylic fills the mold, it goes into a cooling zone where it cools and solidifies. This can be achieved by circulating coolant through the mold, or using methods such as cooling fans or water showers to accelerate cooling.     Q: Customized crylic ?     SMEACRYLIC is a professional extruded acrylic manufacturer with rich experience in extrusion. Through different molds, various shapes can be produced. If you have other shapes, please provide drawings, we will evaluate and quote for you. Q: Make colored acrylic?     SMEACRYLIC mainly produce acrylic related products such as transparent, milky white, sand ingots, etc. If you need other colors of acrylic tube rods, you can refer to our fluorescent rod products, which are blue, red, yellow and green. Optionally, if it still cannot meet your needs, please provide the color number, we will evaluate and quote for you, or you can also request the acrylic processing factory to complete the needs by processing and dyeing transparent tubes and rods. Q: What are the dimensions of the extruded acrylic tube?     SMEACRYLIC have the most complete size of extruded acrylic tube, the outer diameter of acrylic tube is :Dia.(OD) 5 ~ 250mm, thickness 1/2/3/4/5mm, more than 130 kinds of stock sizes in stock, and other popular shapes and sizes, welcome to inquire. If you need a round tube with a larger outer diameter, you can consider Acrylic Cast Tube, the maximum outer diameter can reach 600mm. Q: Maximum production length? Although the extruded material can be extended indefinitely, considering the transportation and storage issues, the longest production length of our company is 6 meters. If you need a longer length, it is recommended to take over and glue it, otherwise there is a risk of breakage.

Q: Acrylic Cast Tube At present, SMEACRYLIC extruded acrylic tube, which can produce a maximum outer diameter of 250mm, but if you need a larger size, you can consider Cast Tube, the outer diameter can reach 600mm, Thickness 10mm, The length is 1.0~1.2M. The manufacturing process is based on liquid MMA raw material, poured into the tube mold, and formed by the centrifugal principle. The dimensional tolerance is large, the process is long, and one piece can be produced. It is suitable for small-scale production. Better, because the molecular weight is high, it can withstand temperature of about 90 degrees, but there will be fine cloth wheel throw marks on the surface. Q: Comparison table of Extruded Tube and Cast Tubes   Acrylic Cast Tube Acrylic Extruded Tube Manufacturing Operation Using liquid MMA raw material, pour it into the tube mold, It is formed by centrifugal principle and has large dimensional tolerance. The production process is long, and one can also be produced, which is suitable for small-scale production. There will be slight cloth wheel throw marks on the surface. Extruded from granular PMMA, with small dimensional tolerance, Fast production speed, suitable for mass production, It is normal to have small mold marks on the surface. Tolerance Large  Small Molecular Weight High (one million) Low (a hundred thousand) Physical properties Good (The molecular weight is high, and the temperature resistance is about 90 degrees) Not Good (the temperature resistance is about 80°) laser cutting OK OK Polishing (cloth wheel) Good (Higher temperature resistance) Not very Good Drilled (thick) Good (Good physical properties, high molecular weight) Need to drill slowly to avoid overheating (more likely to melt) Production restrictions 1 pcs can also be produced Production base quantity required  

Q: Should you choose PMMA acrylic, or PC? A: Both have their own advantages and disadvantages, mainly need to consider the usage and environment, the following is a comparison table between acrylic and PC for your reference:    ITEM PMMA (Acrylic) PC (Polycarbonate) Proportion 1.19 1.2 Impact resistance Fragile 30 times stronger than acrylic Transmittance 92% 88% Processing temperature Under 80°C Under 120°C Water absorption 0.3~0.4% 0.1~0.2% Under prolonged UV light exposure Not easy to yellow easy to yellow, Need to add UV absorber layer Flame retardant degree Low (UL 94 level HB) High (UL 94 level V0) Selling cost Ordinary More Expensive   Q: What are the advantages of acrylic PMMA? Transmittance(ASTM D1003) Rockwell hardness (ASTM D785) Heat distortion temperature (ASTM D648)    Bending strength (ASTM D790) Weatherability - the extent to which the color changes with exposure time  The extent to which the flexural strength of PMMA varies with exposure time

Introduction to LED diffuser sheet   An LED diffuser sheet is a component used in LED lighting systems to scatter and diffuse light emitted by the LED light source. The main purpose of the diffuser sheet is to evenly distribute and soften the light, reducing glare and creating a more uniform illumination. Here's an overview of LED diffuser sheets:   1. Material: PS or PMMA or PS or MS. These materials are commonly used for LED diffuser sheets due to their transparency, durability, and ability to transmit light effectively. They are also lightweight and resistant to yellowing over time. The material characteristics are compared in the following table.   Characteristic PS  PMMA  PC  MS  Scientific Name Polystyrene Polymethyl Methacrylate Polycarbonate Polystyrene-Methyl Methacrylate Transparency 80% 93% 80% 85% Impact Resistance Low to Moderate Moderate to High High Moderate to High Thermal Resistance 70~80℃ 70℃ 140℃ 80~100℃ Chemical Resistance Limited resistance to chemicals Moderate resistance to chemicals Resistant to many chemicals Moderate resistance to chemicals UV Resistance Susceptible to UV degradation Good UV resistance Good UV resistance Moderate UV resistance Cost Economical Moderate cost Moderately Expensive Varies depending on the ratio of PS to PMMA Manufacturing Process Easily molded and extruded Easily molded and extruded Injection Molding, Extrusion Typically involves blending PS and PMMA Applications Disposable items, packaging Optical lenses, signage, lighting Eyewear, automotive parts, bottles Various applications, blends PS and PMMA   2. Design and Structure: The diffuser sheet is designed with a specific pattern or texture to scatter light evenly. Microstructures or prisms on the surface help in achieving the desired light diffusion. 3. Functionality: Diffusion:The primary function is to scatter and distribute light, reducing the direct glare from the LED light source. Beam Control: Diffuser sheets can control the beam angle of the light emitted by the LEDs, ensuring a more even spread of light. Color temperature:In LED products, an important specification number is color temperature, which is related to the color characteristics displayed by LED lighting products. The definition of color temperature:   Light Source Color Temperature Range Typical Application Incandescent 2700K-3000K Residential lighting, ambient Halogen 3000K-3500K Accent lighting, task lighting Warm White LED 2700K-3000K General indoor lighting Neutral White LED 3500K-4000K Offices, commercial spaces Cool White LED 4000K-5000K Task lighting, kitchens, bathrooms Daylight LED 5000K-6500K Reading lights, outdoor lighting   4. Types of Diffuser Sheets: Prismatic Diffusers: These have micro-prisms on the surface, which refract and scatter light in multiple directions. Frosted Diffusers: These have a frosted or matte surface that helps in diffusing light and reducing glare. They provide a softer and more even light output. Lenticular Diffusers: These have a pattern of small lenses on the surface, directing light in specific directions and controlling the spread of light. 5. Installation: The diffuser sheet is typically placed in front of the LED light source within the lighting fixture. It can be integrated into the design of the fixture or added as a separate layer.   6. Cleaning and Maintenance: Care should be taken during cleaning to avoid scratching or damaging the diffuser surface, which could impact light transmission. Typically, a soft cloth and mild cleaning solutions are recommended.   In conclusion, the LED diffuser sheet is a crucial component in LED lighting systems, designed to scatter and distribute light emitted by LED sources. Typically made from materials like polycarbonate or acrylic, these diffuser sheets enhance the quality of illumination by reducing glare, creating uniform light distribution, and softening the overall lighting effect. These diffuser panels find wide applications in various lighting fixtures, including LED panel lights, troffers, downlights, and more, contributing to improved aesthetics and visual comfort in both residential and commercial settings.    

 Q: Is acrylic environmentally friendly? A: Acrylic also known as plexiglass or polymethyl methacrylate (PMMA), is a man-made clear plastic material that is itself a recyclable material, so it does relatively well when it comes to recycling and recycling. In addition, acrylic products have a longer lifespan and can be used for a long time, reducing waste and resource consumption. If you want to choose acrylic products as environmentally friendly materials, it is recommended to choose Xingming high-quality 100% new material products, use them for a longer time, and properly recycle and dispose of them when they are no longer needed.  Q: Is acrylic toxic? Application scope?   A: Acrylic itself is non-toxic, and it is naturally odorless and non-toxic to the human body. It can be used in medical supplies, contact lenses, food packaging utensils, etc. It is transparent, light, weather-resistant, impact-resistant, recyclable, Compared with other plastic materials, it is easier to form and other advantages. The application of acrylic is widely used in various industries, and it is closely related to our lives.    ◆ Stationery gifts: office stationery, business cards, pen holders, medals, gifts, photo frames   ◆ Advertising: light boxes, signboards, signs, neon lights, display stands, signs   ◆ Home appliances: electrical accessories, audio panels, display panels   ◆ People's livelihood products: kitchen, bathroom equipment, storage box, dressing table, shelf   ◆ 3C supplies: mouse, goggles, casing, acrylic electronic products, LCD/TV, mobile phone panel   ◆ Optics: lenses, sunglasses, reflectors, magnifying (convex) mirrors, projection boards   ◆ Leisure and entertainment: basketball boards, household swimming pools, gaming equipment, game console panels, pet toys   ◆ Furniture: tables and chairs, lockers, lecture tables, furniture accessories   ◆ Aquarium: aquariums, petri dishes, feed tubes, fish and shrimp shelters,   ◆ Construction: tree windows, soundproof doors and windows, lighting covers, skylights, greenhouses, telephone booths, screens   ◆ Lighting: street lamps, art lamps and general lampshades   ◆ Transportation: vehicle doors and windows, road sound insulation walls, windshields, rain windows, lights   ◆Industrial use: protective masks for machine instruments, flow meters, optical fibers   ◆ Security: doors and windows of banks, prisons, jewelry stores   ◆ Agricultural medical treatment: greenhouse, plant storage box, baby incubator, medical equipment ◆ Military use: aircraft canopy, yacht windows and tank windows