• Pressure intensifiers mechanical and bladder type
• Specialty tools for abrasion strip removal
• Welded vacuum bags made to size and shape
• Specialty consumable kitting to reduce labor costs
• Caul plate fabrication
1. Application of compaction pressure to consolidate plies and minimize voids
2. Extraction of moisture, solvents, and volatiles
3. Allow the resin to flow and be absorbed
A process using a two-sided mold set that forms both surfaces of the panel. On the lower side is a rigid mold and on the upper side is a flexible membrane made from silicone or an extruded polymer film such as nylon. Reinforcement materials can be placed manually or robotically. They include continuous fiber forms fashioned into textile constructions. Most often, they are pre-impregnated with the resin in the form of prepreg fabrics or unidirectional tapes. In some instances, a resin film is placed upon the lower mold and dry reinforcement is placed above. The upper mold is installed and vacuum is applied to the mold cavity. The assembly is placed into an autoclave. This process is generally performed at both elevated pressure and elevated temperature. The use of elevated pressure facilitates a high fiber volume fraction and low void content for maximum structural efficiency.
RTM is a process using a rigid two-sided mold set that forms both surfaces of the panel. The mold is typically constructed from aluminum or steel, but composite molds are sometimes used. The two sides fit together to produce a mold cavity. The distinguishing feature of resin transfer molding is that the reinforcement materials are placed into this cavity and the mold set is closed prior to the introduction of the matrix material. Resin transfer molding includes numerous varieties which differ in the mechanics of how the resin is introduced to the reinforcement in the mold cavity. These variations include everything from the RTM methods used in out of autoclave composite manufacturing for high-tech aerospace components to vacuum infusion (for resin infusion see also boat building) to vacuum assisted resin transfer molding (VARTM). This process can be performed at either ambient or elevated temperature.
Peel ply can be either a solid sheet, or it can have perforations which can vary in their spacing. Choose spacing based on the amount of resin that needs to be bled out; prepreg manufacturers can recommend spacing for their particular products, and net-resin systems, of course, use unperforated release films.
Fiberglass fabrics have many unique and outstanding properties, which provide design opportunities for the improvement of existing products and the development of new, lightweight, and cost-efficient products. When choosing your fiberglass, you must consider thickness, weight, construction, yarn size and finish desired.
Flash Breaker Tapes are specifically used to hold down materials during the vacuum bagging process over a high range of temperatures and is formulated so it will release from cured resin.