| 摘要 |
PURPOSE: A manhole body of a glass fiber reinforced plastic material and a forming method thereof are provided to increase the strength of the manhole body because gaps between layers of the manhole body are not occurred. CONSTITUTION: A manhole body(100) of a glass fiber reinforced plastic material comprises an inner layer(10), an outer layer, and an outermost layer(30). The inner layer is composed of a glass fiber mat layer(11) and a synthetic resin layer(12). The synthetic resin layer is spread on the glass fiber mat layer. The outer layer is composed of a double layer(23). The double layer is composed of a glass fiber layer(21) and a filler layer(22). The outermost layer is composed of a finishing glass fiber layer(31). |
