acrylic injection molding

Acrylic Injection Molding Services

Acrylic Injection Molding

Acrylic is a synthetic material or plastic sheet that contains one or more acrylic acid derivatives. These types of plastic have glasslike properties which make them great substitutes for glass. With its excellent characteristic, acrylic becomes perfect for injection molding processes.

Acrylic injection molding is known as a versatile technique to create a wide range of products made from acrylic materials. It is a process of injecting hot acrylic materials into the mold and then forming a complex shape. NDDMold makes sure that acrylic Injection molding is the best tool for product development solutions. It offers a high volume of productions at high speed which is perfect for desired projects.

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Acrylic Injection Molding Process

Cleaning and Preparing all Relevant Materials. It is the preparation of materials that are needed during the molding process. Using protective gear bringing the acrylic materials into drying chambers and then cleaning the feeders.

Feeding Pieces of Acrylic into the Barrel. This process is to cut the acrylic into smaller pieces after drying. The purpose of cutting is to fit the acrylic in the barrel machine during the feeding process.

Start Molding Process. Start by switching on the injection molding machine then start operations by turning the screw. After that start heating the acrylic in the exact amount of temperatures, then mixing all acrylic materials. When it’s done pour the molten acrylic into a mold then start shaping.

Cooling the Acrylic Mold. The last process of cooling off the acrylic mold after the molding process then starts hardening. After that, control the process and the cooling time to prevent warping and shrinkage. We used a cooling agent like water necessary.

Advantages of Acrylic Injection Molding

Acrylic injection molding is a process to make acrylic products. There are many benefits of acrylic injection molding such as:

  • Excellent weather ability
  • Low mold shrinkage
  • Excellent optical clarity
  • Resistance to sunlight
  • High impact strength
  • Low rate of water absorption
  • Non-toxic
  • Excellent dimensional stability
  • Resistance to aqueous solutions
  • Resistance to ultraviolet
  • Resistance to scratching
  • Recyclable
  • Strong and lightweight
  • Chemical resistance
  • Non toxic compositions
  • Scratch resistance
  • Shatter resistance
  • Easy to fabricate
  • Can resist water, alkaline, weak acids, etc.
Extensive Range of Application

Acrylic is suitable for a wide range of applications especially for the:

  • Medical appliances
  • Home appliances
  • Refrigerators drawer
  • Plastic glasses
  • Industrial equipment
  • Protective goggles
  • Automotive products
  • Construction industry
  • Outdoor windows and enclosures
  • Beauty products
  • Fashion accessories
  • Plexiglass
  • Eyeglass lenses
  • Retail display and shelves
  • Skylight
  • TV screens
  • Sign and sign holders, and more.
Properties of Acrylic Plastic Materials

Mechanical Properties

Tensile Strength: 800 to 1000 psi

Elongation to Break: 2%

Tensile Modulus: 350,000 to 500,000

Compressive Strength: 11,000 to 19,000 psi

Flexural Strength: 12,000 to 17,000 psi

Compressive strength: 11,000 to 19,000 psi

Thermal Properties

Max. Operating Temperatures: 65 to 90 degrees Celsius

Melting Temperature: 130 to 140 degrees centigrade

Heat Deflection Temperature: 65 to 100 degrees Centigrade

Thermal Conductivity: 3.9 BTU –in/square foot

Coefficient Linear Thermal expansion: 5 – 9 degrees F

Electrical Properties

Dielectric Strength:  400 V/mil

Dissipations factors: 60Hz

Dielectric Constant: 60Hz

Optical Properties

Refractive Index: 1.48 – 1.50

Minimum Light Transmission: 92%

Injection Molded Acrylic Parts Finishing Techniques

Degating. Degating process is designed to remove the intrusion and protrusions.

Deflashing. It happens after delegating, which means removing the excess materials that are mostly found in the form of resin bleeds, flashes, or excess compounds. That process is called deflashing that designed to remove the imperfections in acrylic mold.

Cleaning. The process where in cleaning the leftover excess in the acrylic mold, and ensure it was spotless.

Decorating. The process of decorating the acrylic mold to its desired design.

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