LOCTITE EA 9845 / 9845LC / 9837.1 AERO and EA 9895/9896 WPP surfacing films, lightning protection for composites and wet peel ply fabrics

Country: · Model: EA 9845 / 9845LC / 9837.1 AERO, EA 9895 / 9896 WPP

Surfacing films for composite aircraft parts, including those with copper foil for lightning strike protection, and wet peel ply fabrics EA 9895 and 9896 WPP. According to the manufacturer, the films give up to 30 % weight savings compared with existing ones. The EA 9845LC roll measures 34 in × 150 ft.

EA 9845LC: epoxy surfacing film on a nonwoven carrier with lightweight copper foil for lightning protection; hot cure; UV and microcrack resistance; roll 34 in × 150 ft
EA 9845 series: EA 9845 (SF), 9845 LC (LSC), 9845 LA (LSA)
EA 9837.1 (SynSkin HC 9837.1): epoxy film with good tack, compatible with lightning protection foils; BLK is black; LS has copper mesh; One-Side-Tacky configuration
Advantages: up to 30 % weight savings versus existing films; less honeycomb crushing and porosity; UV and wash-off resistance; out-of-autoclave cure

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Technical specifications

EA 9845LC	epoxy surfacing film on a nonwoven carrier with lightweight copper foil for lightning protection; hot cure; UV and microcrack resistance; roll 34 in × 150 ft
EA 9845 series	EA 9845 (SF), 9845 LC (LSC), 9845 LA (LSA)
EA 9837.1 (SynSkin HC 9837.1)	epoxy film with good tack, compatible with lightning protection foils; BLK is black; LS has copper mesh; One-Side-Tacky configuration
Advantages	up to 30 % weight savings versus existing films; less honeycomb crushing and porosity; UV and wash-off resistance; out-of-autoclave cure
Peel ply	EA 9896 WPP (nylon) and EA 9895 WPP (polyester) — wet fabrics for preparing composites for bonding without sanding; cure 121 / 177 °C, 90–120 min; storage −18 °C; 14 days on the bench

Specifications are taken from the manufacturer’s technical documentation. Updated 11/10/2026.

Description

EA 9845LC is a lightweight hot-cure epoxy film on a nonwoven carrier with lightweight copper foil compatible with lightning protection meshes and foils; it tacks well and is easy to repair after a lightning strike. The series also includes EA 9845 and EA 9845 LA. EA 9837.1 (SynSkin HC 9837.1) has good tack and comes with one tacky side, BLK is black, LS has copper mesh. The films reduce honeycomb crushing and porosity, increase resistance to UV and wash-off, allow out-of-autoclave cure and give a surface ready for painting. EA 9896 WPP fabric (nylon) and EA 9895 WPP (polyester) are laid on the composite during forming and removed before bonding, so no sanding or solvent is needed. Cure is at 121 or 177 °C for 90–120 minutes, bench life 14 days, storage at −18 °C.

How to choose

For lightning protection take EA 9845LC with copper foil, for a surface without metal the EA 9837.1 film, and LS adds copper mesh. If preparation without sanding is needed before bonding, choose peel ply, nylon EA 9896 or polyester EA 9895. The manufacturer notes that wet fabrics give a more durable bond than dry ones and promote cohesive failure.

Request a price and lead time

LOCTITE EA 9845 / 9845LC / 9837.1 AERO and EA 9895/9896 WPP surfacing films, lightning protection for composites and wet peel ply fabrics. We reply within one business day.