Polymethyl methacrylate (PMMA), commonly referred to as acrylic or acrylic glass, is a rigid, hard, and transparent material with a density ranging from 1.18 to 1.19g/cm³. Exhibiting a modest refractive index of approximately 1.49, PMMA offers exceptional light transmittance of 93% and maintains a low haze level not exceeding 2%. These characteristics collectively establish PMMA as a premium organic transparent material of superior quality.

PMMA

The Process of PMMA Material

  1. Cutting: Laser cutting is a non-contact cutting method where lasers can cut various patterns, texts, and more. The technique involves directing a laser beam onto the surface of acrylic to release energy, melting the acrylic sheet. Laser cutting allows for precision cutting of materials with complex shapes, requiring only polishing of the cut material.
  2. Drilling: Holes can be positioned and drilled using a drill machine or CNC machining based on the dimensions specified in the drawings.
  3. Polishing: When the customer requires high transparency standards, necessitating polishing for the product. This process is achieved through traditional methods of grinding and buffing wheel polishing.
  4. Thermoforming: Thermoforming of acrylic can be achieved through various methods where multiple acrylic sheets can be placed on a set of thermoforming equipment and shaping molds for forming. The majority of thermoforming processes involve single-line or parallel-line shaping, with the shaping angle controlled by the shaping mold.
  5. Bonding: Bonding is a highly precise process that demands not only accurate alignment but also ensures a high level of product durability.

The Finish of PMMA Material

Acrylic sheets exhibit excellent printability and sprayability. By employing appropriate printing and spraying techniques, acrylic products can achieve ideal surface decoration effects. Additionally, acrylic sheets can undergo laser engraving to create uniquely designed products.

Application of PMMA Plastic Material

PMMA material is a unique combination of optical clarity, impact resistance, weather resistance, and ease of fabrication making it a popular choice for a wide range of applications across various industries, like automotive, medical, electronics, packaging, etc.

Black PMMA Prototype

clear pmma

Clear PMMA Prototype

Source Other materials.