Hot-pressing molding method for fiber thermosetting prepreg material

A hot-pressing molding method for fiber thermosetting prepreg material, comprising:

• providing a die module including a first side die and a second side die;
• providing an upper die;
• attaching fiber prepreg material to the upper die with the fiber prepreg material facing the die module;
• closing the upper die and the die module with the upper die and the fiber prepreg material enclosed by and sandwiched between the first side die and the second side die of the die module;
• heating and pressurizing the upper die and the die module;
• introducing and pouring a gas with a predetermined pressure through a preset passage into the upper die to soften the upper die so that the softened upper die transmits the predetermined pressure of the gas to the fiber prepreg material;
• and
• forming a molded product of the fiber prepreg material;
• wherein:
• the preset passage protrudes from the first side die and the second side die of the die module when closing the upper die and the die module;
• the first side die and the second side die construct an outer face of the molded product;
• the first side die and the second side die are made of metallic material;
• the upper die constructs an inner face of the molded product;
• the upper die is made of plastic material;
• and
• the upper die has a hollow structure that is formed by blow molding.