Finishing
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Finishing brochure Select the optimal finishing Get a competitive edge Reduce cost, decrease weight and improve quality

Choosing the optimal finishing for a competitive edge What is finishing? Finishing refers to the machining of structural core materials. You can choose from a wide range of cuts, grooves and perforations in different patterns, each serving a specific purpose. Why finishing? The right combination of core material, laminate and finishing allows you to save time, money and resources, and affects the characteristics of your product. Why a finishing solution from Diab? Diab is a world-leading supplier of sandwich composite solutions with long experience in finishing for structural core...

Three factors influencing your choice of finishing A focused analysis will help you choose the right finishing. Key success factors • Weight is of key importance in many applications. A finishing combination with low resin consumption might be your preferred choice. Weight requirements impact manufacturing speed and total cost of the composite component. • Cost sensitivity requires a finishing combination suitable for faster manufacturing, involving short lay-up time and fast resin flow. Having cost as a main driver can impact the resin consumption, weight and surface finish. • Surface...

Manufacturing process The finishing option significantly impacts the manufacturing process you choose and vice versa. The most common types of processes used in composite manufacturing are: • Infusion and RTM: a pressure differential is applied to wet laminates and core with resin under vacuum. • lay-up: laminates are manually wetted Hand out with a roller or brush in a mold. Multiple layers are laid and wetted until the intended thickness is achieved. The core layer is wetted with resin and bonded with core bonding paste. • Vacuum bagging: additional process to hand lay-up used to draw out...

Overview of finishing options Use this overview as a quick reference guide or as a springboard for discussions with our expert consultants. Note that the options below are most often used in combination. Plain sheets: where finishing starts Formable finishing options: creating curves Using a plain sheet is the most effective way to utilize a core. Through machining, it can be perforated, grooved or slitted to make it as functional as possible for the application. • Grid-scored finish (GS) makes the core conform easily to the mold for complex shapes. A square cut pattern creates small blocks...

Optimize your applications Example ofapplications Usefor Molding process Grooves on one or both sides, combined with 2 mm diameter square grid perforations. Can be cut lengthwise and/or crosswise with 20 mm spacing between the grooves. Provides optimum flow speed and secures wet-out of both surfaces. Infusion and closed molding Grooves on one or both sides. The grooves can be cut crosswise, longitudinal only or transverse only. Allows resin to flow in closed molding applications and expels trapped air. Infusion and closed molding Perforations with a diameter ranging from 1.6 mm to 3.2 mm...

Diab Group Box 201, 312 22 LAHOLM, Sweden Diab is a world leader in sandwich composite solutions that make customers’ products stronger, lighter and smarter. Diab provides a range of core materials, cost-effective kits, finishings and in-depth knowledge on composites. Diab also provides engineering services for composite technology through Composites Consulting Group (CCG). Diab is a participant of UN Global Compact.