What are the thicknesses and specifications of transparent cast acrylic sheets a must see before purchasing
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What are the thicknesses and specifications of transparent cast acrylic sheets - a must see before purchasing
Transparent cast acrylic sheet is widely used in advertising light boxes, building lighting, high-end displays, medical equipment and other fields due to its ultra-high light transmittance of over 92%, excellent weather resistance and outstanding processing performance. However, in actual procurement, many people lack a systematic understanding of the thickness specifications, size system, and quality identification methods of transparent casting boards, resulting in difficulties in selection, inaccurate budgeting, and even buying inferior products.
The production process of transparent casting board involves injecting liquid MMA monomer into a glass mold to slowly polymerize and solidify. This "slow work produces fine work" process endows it with high molecular weight, high transparency, and strong impact resistance. This article will systematically sort out the complete information of transparent casting boards from four dimensions: thickness specifications, characteristics, size system, and identification methods.
The thickness specifications of transparent cast acrylic sheets are very diverse, with mature product lines ranging from ultra-thin to ultra thick sheets.
Complete Thickness Specification Table
Thickness level reference thickness (mm) Applicable scenario reference price range (yuan/㎡)
Ultra thin board 0.8-1.5 special customization, with low shipment volume negotiated based on order quantity
Thin Plate 2, 3, 4, 5 Light Box Panels, Display Shelves, Signage 70-150
Medium thick plate 6, 8, 10 furniture partitions, equipment covers, medium-sized displays 150-250
Thick plate 12, 15, 20 aquarium, building partition, load-bearing structure 250-500+
Super thick plates 25, 30, 40, 50+for large-scale projects, special customization 500+
The conventional thickness of transparent casting board covers 1 mm、1.8mm、2mm、3mm、4mm、5mm、6mm、8mm、10mm、12mm、15mm、20mm、25mm、30mm、40mm、50mm Wait. Among them, 3-5mm is the most in demand range in the market, suitable for mid-range applications such as advertising light boxes, display stands, signs, etc. 8-10mm is suitable for medium-sized applications with impact resistance and load-bearing requirements. 12mm and above are suitable for large structural components, and as the thickness increases, the production cycle and cost will significantly increase.
thickness tolerance
Due to the characteristics of the production process, transparent casting boards may have certain thickness tolerances. According to the international standard ISO 7823, the formula for calculating the tolerance of casting plates is ± (0.4+0.1 x thickness). The tolerance of 2mm cast plate is about ± 0.4mm. In contrast, the thickness tolerance of extruded plate is smaller, but the performance is also slightly inferior. During procurement, verification can be carried out through multi-point measurement with calipers (at the corners and center) - the thickness tolerance of high-quality cast plates is stable; If significant differences in thickness are found at different positions of the board, it indicates that there may be issues with the production process or raw materials.
Transparent cast acrylic sheet retains all the advantages of the casting process while also possessing the following core characteristics:
1. Ultra high transparency
The transparency of transparent cast acrylic board can reach 92% -98%, with a crystal clear appearance and smooth edges without any blemishes. After being illuminated with white light, the pure new material casting board emits pure light without yellowing or bluing. This feature makes it the preferred material for high-end displays and fine lightbox scenes.
2. Excellent impact resistance performance
The impact strength of acrylic is 6 to 17 times that of ordinary glass. The density is only half that of glass (about 1.19-1.20g/cm ³), but the strength far exceeds that of glass. When used outdoors or in crowded places, the safety is extremely high.
3. Excellent weather resistance
Cast plates have excellent weather resistance and strong adaptability to natural environments, and their performance will not change even after prolonged exposure to sunlight, wind, and rain. After UV coating treatment, all acrylic sheets can be used outdoors for 8-10 years without yellowing.
4. Excellent processing performance
Casting boards can be processed in various ways such as spray painting, screen printing, vacuum coating, etc. When heated to a flexible state, they can also be sawed, drilled, and machined. The hot forming temperature range is 140-180 ℃, and the hot deformation temperature is about 100 ℃.
5. Good chemical resistance
Acrylic has good weather resistance and acid and alkali resistance, and will not cause yellowing or hydrolysis due to long-term exposure to sunlight and rain.
6. Lightweight advantages
Acrylic has only half the density of glass, making it easy and safe to install when making large external advertising light boxes.
The size system of transparent cast acrylic sheets is also complete, covering both standard and customized sizes.
standard size
Size (mm) Remarks
1220 × 2440 best-selling size (4 feet × 8 feet), suitable for the vast majority of scenarios
1220 x 1830 4 feet x 6 feet, common standard sizes
2050 × 3050 ultra large specification
1000 × 2000 common sizes
1270 × 2490 special specification
1610 × 2550 special specification
1440 × 2940 special specification
1850 × 2450 special specification
1050 × 2050 Special Specification
1350 × 2000 special specification
1220 × 3050 special specification
Custom size
The casting process supports customization of any size as needed. Customers only need to provide size requirements or CAD drawings, and the manufacturer can accurately process according to the drawings. Some manufacturers can achieve a one-time molding size of 3000 × 11000mm and a maximum thickness of 250mm. Customized size is a major advantage of casting boards, which can meet various special project requirements.
Q1: How to distinguish whether transparent cast acrylic sheets are new or recycled materials?
It can be comprehensively judged through the following methods:
Transparency: When pure new material is irradiated with white light, the light emitted is very pure, without yellowing or blurriness; The appearance of the recycled board is yellowing.
Looking at the cross-section: Pure new material acrylic board has a pure appearance color, which is particularly noticeable from the cross-section.
Smell: There is no irritating odor when cutting new materials; When cutting recycled materials, there is a strong odor and a lot of smoke.
Combustion test: When the new material burns, the flame is clear and there is no black smoke; There is black smoke and a pungent odor when recycled materials are burned.
Check thickness: The thickness tolerance of pure new material is stable at around ± 0.2mm; The thickness of the return plate is unstable, with a difference of up to 0.5mm.
Q2: What is the difference between transparent casting board and transparent extrusion board?
Comparison Dimension Casting Plate Extrusion Plate
Light transmittance 92% -98%, approximately 92%
The edge quality is smooth, transparent, and free of blemishes. There may be blemishes or even yellowing and blackening
High and low molecular weight
The impact resistance of glass is 6-17 times lower than that of cast plates
Excellent weather resistance (8-10 years after adding UV), average
Thickness tolerance ± (0.4+0.1 x thickness) is smaller
Higher and lower prices
Q3: How long can transparent cast acrylic sheets be used outdoors?
The transparent casting board made of 100% brand new materials and added with ultraviolet absorbers can have an outdoor service life of 8-10 years. All acrylic sheets are treated with ultraviolet coating to ensure that they do not turn yellow when used outdoors. The boards containing recycled materials will visibly yellow and fade outdoors within six months, and are not recommended for outdoor use.
Q4: Is it a quality issue that the edges of transparent casting boards turn white during cutting?
It's not a quality issue. The inherent characteristic of laser cutting edges on casting plates is that they appear milky white. This is because the molecular structure of the casting plate reacts differently during laser cutting compared to the extrusion plate. If you want transparent edges, you can use flame or sandpaper to polish them slightly.
Q5: Can transparent cast acrylic sheets be hot bent?
Okay. The hot forming temperature range of the casting plate is 140-180 ℃, and the hot deformation temperature is about 100 ℃. The heating time of thin plates is relatively short (2-3mm, about 2-3 minutes), making them very suitable for making curved display stands, curved lightbox panels, and other products.
| product type | pet、ps、acrylic、acrylic mirror、pvc sheet,acrylic sheet |
| thickness | 0.35-300mm |
| Styles | 1220*2440,1220*1830,500*900,50*60,960*1950,700*900/Customization of various specifications and sizes |
| delivery time | 5-8day |
| manufacture | Yifang |
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