Processes for forming fiber reinforced composite aircraft components, i.e., aircraft components formed of a cured fiber-reinforced resin, are provided. According to specific embodiments, a finished surface of the composite aircraft component can be achieved by providing in-mold coating of the cured fiber-reinforced resin by a dried and cured film layer of a water-based primer paint material to thereby achieve a composite aircraft component having an exterior surface that does not necessarily require further finishing.

Processes for forming fiber reinforced composite aircraft components, i.e., aircraft components formed of a cured fiber-reinforced resin, are provided. According to specific embodiments, a finished surface of the composite aircraft component can be achieved by providing in-mold coating of the cured fiber-reinforced resin by a dried and cured film layer of a water-based primer paint material to thereby achieve a composite aircraft component having an exterior surface that does not necessarily require further finishing.

To provide a release film having an electrostatic dissipative property. The present invention provides a release film comprising a base layer formed of a polyester resin and a surface layer formed of a tetrafluoroethylene resin that comprises an electrically conductive filler, and the release film has a surface resistivity Rs of 1×10.sup.11Ω or less. Preferably, the electrically conductive filler comprises carbon black, and the tetrafluoroethylene resin further comprises particles having an average particle size of 1 μm to 15 μm determined by laser diffraction particle size analysis.

To provide a release film having an electrostatic dissipative property. The present invention provides a release film comprising a base layer formed of a polyester resin and a surface layer formed of a tetrafluoroethylene resin that comprises an electrically conductive filler, and the release film has a surface resistivity Rs of 1×10.sup.11Ω or less. Preferably, the electrically conductive filler comprises carbon black, and the tetrafluoroethylene resin further comprises particles having an average particle size of 1 μm to 15 μm determined by laser diffraction particle size analysis.

The objective of the present invention is to provide a mold-release film that docs not contaminate the mold or the formed body. This invention provides a mold-release film comprising a base material layer formed from a thermoplastic resin, and a surface layer formed from a resin composition layered on at least one surface of the base material layer. The mold-release film has a trouser tear strength, conforming to JIS K 7128-1, of 5 N/mm or stronger. The resin composition has a peel strength of 15 mN/30 mm or weaker, as measured at 175° C. in accordance with JIS Z0237. The resin composition has an elongation at break of 70% or greater, as measured at 175° C. in accordance with JIS K 7127.

The objective of the present invention is to provide a mold-release film that docs not contaminate the mold or the formed body. This invention provides a mold-release film comprising a base material layer formed from a thermoplastic resin, and a surface layer formed from a resin composition layered on at least one surface of the base material layer. The mold-release film has a trouser tear strength, conforming to JIS K 7128-1, of 5 N/mm or stronger. The resin composition has a peel strength of 15 mN/30 mm or weaker, as measured at 175° C. in accordance with JIS Z0237. The resin composition has an elongation at break of 70% or greater, as measured at 175° C. in accordance with JIS K 7127.

A method for making a molded composite includes the steps of providing a lower mold that has an upward depressed surface having first and second surface regions and an interconnecting region, placing a mold release film on the upward depressed surface to cover at least the first and second surface regions and the interconnecting region, placing a molding material on the mold release film such that the mold release film is disposed between the upward depressed surface and the molding material, and hot pressing the molding material by pressing a downward pressing region of an upper mold toward the upward depressed region of the lower mold so as to form the molding material into a molded composite.

A method for making a molded composite includes the steps of providing a lower mold that has an upward depressed surface having first and second surface regions and an interconnecting region, placing a mold release film on the upward depressed surface to cover at least the first and second surface regions and the interconnecting region, placing a molding material on the mold release film such that the mold release film is disposed between the upward depressed surface and the molding material, and hot pressing the molding material by pressing a downward pressing region of an upper mold toward the upward depressed region of the lower mold so as to form the molding material into a molded composite.

A three-dimensional printing apparatus includes a liquid tank. The liquid tank includes a release layer and a plate. The release layer has a workpiece curing area, and the plate supports the release layer and has a first area corresponding to the workpiece curing area and a second area adjacent to the first area; the second area has at least one fluid passage extending from a first surface of the plate contacting the release layer to a second surface of the plate. The embodiments of the present invention facilitate the separation of workpieces from the release layer. Another three-dimensional printing apparatus and a three-dimensional printing method are also provided.

A three-dimensional printing apparatus includes a liquid tank. The liquid tank includes a release layer and a plate. The release layer has a workpiece curing area, and the plate supports the release layer and has a first area corresponding to the workpiece curing area and a second area adjacent to the first area; the second area has at least one fluid passage extending from a first surface of the plate contacting the release layer to a second surface of the plate. The embodiments of the present invention facilitate the separation of workpieces from the release layer. Another three-dimensional printing apparatus and a three-dimensional printing method are also provided.