MATERIALS: Coex Fluoropolymer Has 'Exceptional' Self-Bonding Capabilities

AGC Chemicals' new, ultra-low-melting ETFE resins exhibits advanced adhesive properties.

A new resin added to the Fluon LM-ETFE AH series of adhesive fluoropolymers from AGC Chemicals Americas, Exton, Penn., boasts advanced adhesive properties that allow it to bond to dissimilar materials such as nylon, PE, and metals. This bonding functionality of LH-8000 is said to be ideal for producing multilayer structures in a one-step process without surface treatment and by often eliminating the need for a tie layer.

LH-8000 has chemical resistance and electrical and non-stick properties equivalent to conventional ETFE resins. However, this is an ultra-low-melting resin—356 F to 374 F, the lowest of all resins in the AH series and also offers the widest processing temperature range between melting point and onset of degradation (662 F) among all of the AGC’s Fluon ETFE products. This large processing temperature window minimizes any possible material decomposition. Additionally, the corrosive off-gas levels at melt processing of LH-8000 are said to be very low, minimizing damage to molding equipment.

This resin is reportedly cost-effective for applications such as chemical bags, hot-water hoses, rubber-hose mandrels, and anti-stick conveyor belts, multilayer monofilament, and interlayer insulation film for electronic substrates and tubes that convey harsh materials in the chemicals, plastics, oil and gas, building and paint industries.

Says Katie Sprick, AGC product and development engineer, “Processors and molders using Fluon LH-8000 can reduce their initial investment because a fluoropolymer layer can be co-extruded with conventional engineering plastics, like HDPE and nylon, without the need for special corrosion-resistant equipment.”


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