Tri-Seal: Coextruded Foamed Liners

The company’s engineers have developed three new products based on lower foam densities in order to decrease liner weight and deliver reduced cost.

The company’s engineers have developed three new products based on lower foam densities in order to decrease liner weight and deliver reduced cost.
The company’s engineers have developed three new products based on lower foam densities in order to decrease liner weight and deliver reduced cost.

Tri-Seal, a Tekni-Plex business, is expanding its closure liner offerings with the addition of three new cost-effective, coextruded foamed products to its line: F-224™, F-419M™ and F-830™.

Tri-Seal is known for its closure liner and seal products, particularly F-217®, a low-density polyethylene foam used to package food, pharmaceutical, cosmetic, healthcare, chemical and agricultural chemical products. F-224, F-419M and F-830 closure liners aim to provide cost-effective solutions for less demanding applications.

The F-224 liner is an alternative to Tri-Seal’s F-217 liner and complies with the same regulatory requirements. F-224 liner features a foamed LDPE core with solid LDPE layers on both sides. F-419M liner is another alternative to F-217, featuring an LDPE core with high-density polyethylene on either side. This gives the liner stiffness attributes needed to offset occasional pinwheeling (a swirl-like shape in the center of a liner).

F-830 liner is an alternative to Tri-Seal’s F-828 liner. It is a three-ply coextruded liner consisting of a foamed polyolefin core with solid polypropylene copolymer layers on both sides. It targets closure liner applications that require heat resistance, or situations where a foamed liner is used with an induction seal.

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