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[Volek] A registered trademark for a cross-linked Polyethylene foam manufactured by Sekisui Voltek, LLC. Like polyethylene foams, cross-linked polyethylene foams are durable and chemically stable, but are typically finer celled. [1] Minicel is a closed cell foam. It is an extremely fine-celled bun foam that has a smooth, consistent surface. Minicel has a tough and firm, yet elastic feel. [2] Minicel has good thermal insulation, strength and shock absorption. It is impervious to mildew, mold, rot, and bacteria, as well as chemical resistance. Standard colors are natural-white and black. Minicel is very buoyant and is commonly used in water recreation devices such as kayaks. [3]

Synonyms and Related Terms

Polyethylene foam; crosslinked polyethylene foam; XLPE foam; X-linked PE foam; Volara


  • Art handling
  • Storage
  • Transport: shock absorption and cushioning

Personal Risks

Sekisui Voltek: SDS

All Minicel products are non-toxic and contain no CFC, HCFC, or hydrocarbon blowing agents. [4]

Collection Risks

Stable. Minnesota Historical Society says, “Can be used” (MWG 2020).

Environmental Risks

Physical and Chemical Properties

Form Solid, in various forms
Odor Light
Melting Point PE foam: 90-115°C
Solubility in/miscibility with water Insoluble

Working Properties

Forms and Sizes

Produced in molded bun form.

Density range: 2, 3, 3.8, 6, 8, 12 and 22 pcf.

Bun sizes:

  • 2, 3, 3.8 pcf: 4 x 48 x 72”
  • 6 pcf: 3 x 48 x 72”
  • 8 pcf: 1.78 x 32 x 67”
  • 12pcf: 1.50 x 28 x 59”
  • 22 pcf: 1.2 x 24 x 49”

Minicel L200 and LF200 Foam sheets [5]:

  • 72 x 48” sheets (sold in 2/3, ½, and 1/3 sheets)
  • ¼, 3.8, ½, ¾, 1, 1.5, 2, 3, and 4” thick

Resources and Citations

  • Kaela Nurmi, contributed information, MWG group, 2020.