Thick Polycarbonate Sheets

Ultra Thick Polycarbonate Sheet

Excelite Ultra-Thick Polycarbonate Sheets provide exceptional strength and versatility, perfect for high-end engineering, military, and architectural projects. These durable, transparent sheets can achieve 30mm-480mm thickness for industrial projects.
General Purpose Polycarbonate Sheets


Different with extruded polycarbonate solid sheets that ranges from 1mm to 25mm thickness, Excelite Ultra-Thick Polycarbonate Sheets are cast polycarbonate using a pouring mold technique. This process involves material melting and specific stress-relieving procedures for polycarbonate, enabling the production of sheets from 30mm to 480mm thick. Our super thick polycarbonate sheets feature glossy surfaces on both sides, exceptional optical clarity, and impressive strength, making them the preferred choice across numerous industries and applications.
Thick polycarbonate sheet
The optical-grade special ultra-thick clear polycarbonate solid sheet offers versatility in various processes, it’s a perfect industrial polycarbonate material for polycarbonate machining and fabrication, such as CNC routing, engraving, rounding, punching, polishing, chamfering, polycarbonate milling, drilling, and grinding. Super thick polycarbonate sheet can be shaped into industrial polycarbonate transparent components like polycarbonate cylinders, plastic columns, polycarbonate pipe fittings, conical parts, polygonal three-dimensional shapes, irregular parts, high-pressure polycarbonate transparent bodies, and more. It caters to diverse equipment needs and terminal applications in advanced industrial sectors.
Thick polycarbonate sheet

Features Of Excelite Ultra-Thick Polycarbonate Sheet

  • Exceptional thickness and strength (30mm-480mm)
  • Optical transparency and glossy finish on both sides
  • High temperature resistance
  • Ballistic polycarbonate, Bulletproof
  • High pressure resistance
  • UL V0 grade fire Grade
  • Easy CNC machining
  • Electrical insulation
  • Super high thermal insulation


  • Protective barriers and safety equipment in high-risk environments
  • Bullet-resistant glass for military vehicles and installations
  • Radiation shielding panels for nuclear facilities
  • Gas and liquid pressure equipment
  • Underwater pressure equipment, high pressure ship window
  • High-end equipment, precision machinery
  • Deep-sea submersibles

Photo credit to: Plexiglas

Thick polycarbonate sheet product Specification

Size: 1220*2440 Or customisable.

Thickness: From 30mm-480mm

Density: 1.22kg

What types of machining and fabrication can we perform on thick polycarbonate sheets?

1, How to cut super thick polycarbonate sheet?

CNC machining polycarbonate and water jet cutting polycarbonate

The ultra-thick polycarbonate sheet is compatible with various cutting methods like electronic cutting machines, plate cutting machines, CNC milling, and water jet cutting. Among these, CNC milling and ultra-high-pressure water jet cutting are highly recommended for thick polycarbonate.

Waterjet cutting come in two types: Abrasive Water Jet and Pure Water Jet Cutting. Pure waterjet cutting helps maintain the physical and chemical properties of the ultra-thick polycarbonate sheet and provides a superior, polished surface. For polycarbonate sheets thicker than 200mm, abrasive waterjet cutting offers high speed and pressure, aiding in efficient cutting. Finer abrasive particle sizes result in a better polishing effect and improved cutting surface finish. With waterjet technology surpassing ultra-high pressures of 520MPa, it can effectively cut ultra-thick polycarbonate sheets exceeding 300mm in thickness.

water jet cutting polycarbonate

2, Polycarbonate Drilling

When drilling holes in thick polycarbonate sheets, use a twist drill with a spiral angle between 12 to 16 degrees for easy chip removal. Keep the drill bit and surface cool, and ensure the groove is smooth and clean. For larger holes, try distributed drilling or hollow drills. Use sharp bits to prevent damage. Keep holes away from the sheet edge and space them apart. Consider bolt holes with a slightly larger diameter than the bolt for thermal expansion.

Polycarbonate boring cutting

3, Polycarbonate Boring Cutting

To make thick-walled polycarbonate cylindrical transparent parts, excavating holes, semi-perforated parts, or internally hollow polycarbonate transparent components, boring is a typical CNC cutting for internal processing of transparent materials. By utilizing CNC boring processes along with polycarbonate milling, drilling, and grinding methods, suitable tools can be used for thick polycarbonate sheet machining. Boring can be divided into through-holes, tapered holes, and non-through-holes based on polycarbonate sheeting thickness , enabling the creation of arbitrary internal diameters and wall thicknesses for tubular components.

4, Polycarbonate Polishing

Polishing can be carried out using traditional machining methods like milling, grinding, coarse polishing, and fine polishing. The process includes grinding depths of 0.06-0.2mm and 0.01-0.05mm for coarse and fine polishing, respectively. During grinding, monitor grinding wheel speeds and cooling of contact surfaces. For Excelite thick polycarbonate sheeting, mechanical polishing can attain 610-750r/min or use wool pad polishing. When dealing with smaller areas, manual polishing can be done using polishing paste and cotton with uniform pressure. If it’s your first-time do ultra-thick polycarbonate machining, try some offcut material out first to understand material and tools and reliable machining techniques.

Polycarbonate Polishing

5, Polycarbonate Annealing

Annealing is a standard procedure to make thick polycarbonate sheet and general purpose polycarbonate sheet. Yet, in high-end or ultra-precise applications, further annealing might be needed. This process involves slowly heating the thick polycarbonate sheet to 100±3℃ at 1℃/min and maintaining this for 10min per 1mm thickness. Then, it cools slowly at a rate of 10℃/h back to room.

Related Clear Polycarbonate Sheets

polycarbonate clear sheet

Clear Polycarbonate Sheets

Get A Quote Today

Bring Your Ideas to Life with Excelite Plastics. 

Custom Polycarbonate Solutions Tailored for You. 

Share Your Project With Us!


+86 135 8555 4902

Click or drag a file to this area to upload.