Polyply Composites LLC

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1540 Marion Street
Grand Haven, MI 49417-2368
About Polyply Composites LLC
  • Polyply Composites is a service oriented compression molder of SMC and BMC polyester fiberglass systems. With a quality assurance program fully integrated into our company culture, we provide quality, on-time shipments, every time.

    Versatility and a commitment to excellence highlight our custom molding capabilities. As a materials formulator and a compression molder with large press capacity, we offer a distinct economical and logistical advantage

    Polyply Composites produces parts made by compression molding fiberglass reinforced polyester materials. These thermoset materials contain catalyst which initiates curing under high heat and pressure.

    SMC and BMC parts are produced for a variety of industries. Currently we are manufacturing parts that include laundry tubs, shower basins,structural frames,and a large number of electrical insulating parts.
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Products by Polyply Composites LLC
  • Molded Parts

    Polyply Composites molding capabilities are limitless. As a materials formulator and a compression molder with large press capacity, we offer a distinct economical and logistical advantage. Polyply Composites produces parts made by compression molding fiberglass reinforced polyester... Read more
  • Molding Compounds (SMC & BMC)

    Polyrite® 100 ... General purpose, pigmentable, low shrink, low profile sheet molding compounds with regular (280-310ºF) or fast curing (325-335ºF) temperatures and mold cycles (1.5-2.0 minutes and 30-60 seconds, respectively), depending on the part being molded. These sheet molding compounds... Read more
  • GPO-3 Sheet Laminate

    All grades of Polyply industrial sheet are produced using polyester resin and fiberglass reinforcement. They are U.L. recognized and are available in 36"x72" and 48"x96" sheet. Sheets are manufactured in thicknesses ranging from 1/32" to 2" with most sizes in stock for immediate... Read more