Bottom pouring type vacuum perfusion process

• Main Authors: HUANG HUIXIU, QIAO GUANGHUI, REN GUIFANG, QIAO XIAOLIANG
• Format: Patent
• Language: Chinese; English
• Published: 25.04.2012
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a bottom pouring type vacuum perfusion process. A flow guidance screen is placed below a glass fiber cloth pavement layer, and resin is perfused upwards from the surface of a die so that air bubbles in the resin are led out directly. The resin saturates glass fibers from bottom to top. In order to eliminate micro air bubbles in the resin, a layer of VAP film is paved on the surfaces of the glass fibers. A layer of ventilating felt is paved on the VAP film as a transmission medium of a gas to evenly distribute vacuum, and the ventilating felt is connected with a vacuumpipe, and the vacuum of a whole perfusion system is evenly distributed, but the resin cannot be leaked out. The air bubbles in the resin are greatly reduced so that the compaction rate of a product is improved. The upper surface of the product is an adhesive surface without air bubbles, so the upper surface can be adhered to other parts of a blade very well. The bottom pouring type vacuum perfusion process improves the re