Custom Polyethylene (HDPE, MDPE & LDPE) Extrusion Manufacturer

Polyethylene is one of the most common plastics in use today. A thermoplastic polymer, polyethylene is available in different polymers grouped by the molecular weight, or density.

Preferred Plastics extrudes high-quality custom plastic parts using polyethylene.  A leading custom extruder, Preferred Plastics offers an inventory of standard compounds of polyethylene, including HDPE, MDPE, and LDPE.

What Is Polyethylene?  

Polyethylene is one of the most common plastics in use today. A thermoplastic polymer, polyethylene custom parts are available in different polymers grouped by the molecular weight, or density.

• HDPE – High density polyethylene is defined by a density greater than or equal to 0.941 g/m³. It is manufactured from petroleum and has a low degree of chain branching, resulting in strong intermolecular forces. HDPE has a high strength-to-density ratio, is corrosion and chemical resistant, and weatherproof.
• MDPE – Medium density polyethylene is defined by a density range of 0.926 – 0.940 g/m³.  MDPE is produced by chromium/silica catalysts. MDPE exhibits good shock and drop resistance properties, with better stress.
• LDPE – Low density polyethylene is defined by a density range of 0.910 – 0940 g/m³. It is comprised of long and short chain branching, which results in weaker intermolecular forces than MDPE. It manufactured by free radical polymerization from the monomer ethylene. LDPE is more flexible than MDPE, strong, weatherproof, and chemical resistant. 

Overall, custom polyethylene extrustions are a low cost, easy-to-process material. Some grades of polyethylene are recyclable. 

Polyethylene custom parts are used for applications in the construction, plumbing, marine, furniture, and automotive industries. Some of the custom polyethylene extrustions we manufacture at Preferred Plastics are:

• Seals
• Tubing
• Shims
• Weather-strips
• Guards
• Cord
• Bindings
• Step treads
• Chock Blocks

At Preferred Plastics, we utilize sustainable, environmentally-responsible manufacturing practices, to minimize waste and maximize energy efficiency in our manufacturing. We can assist you in selecting environmentally friendly alternatives or compounds for your project.

Preferred Plastics operates two large production facilities that provide the capacity to extrude simple and complex shapes to the tightest tolerances and exacting requirements. Our turnkey services include complete finishing services, including close tolerance cutting, precision drilling, notching, punching, trimming, welding, stamping, and custom packaging. Preferred Plastics is ISO 9001:2015 certified.

At Preferred Plastics, we are committed to manufacturing a high-quality part that meets your expectations, is delivered on time and on budget – all supported by superior customer service. We understand that the components and parts we deliver you are critical to the performance of your finished products and that the quality of our products impacts the quality of your products – and that it’s your reputation on the line. It’s that commitment that keeps our customers coming back.

Call today to see how we can help you! Kentucky Facility: (502) 935-3070 / Michigan Facility: (269) 685-5873