Fiber-Reinforced Plastic Molding with Two-Stage Pressurization
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Solution Overview
Problem
Existing additive manufacturing technologies face challenges in producing fiber-reinforced resin products with high fiber content and high mechanical strength, particularly in achieving solid figure shapes and maintaining structural integrity.
Innovation Solution
A method involving an additive manufacturing step followed by two pressurization steps, including a first pressurization step to integrate most fibers with resin and form a curved shape, and a second pressurization step under heating to reduce volume and enhance bonding, with specific pressure and temperature conditions applied in each step.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additive manufacturing technology is used to produce fiber-reinforced resin products, then free modeling capability is achieved, but it is difficult to produce products with high fiber content and solid figure shapes
Solution Approach 1:
The manufacturing process is divided into multiple stages: additive manufacturing step to create the basic shape, first pressurization step to integrate fibers and form curved portions, and second pressurization step under heating to reduce volume and finalize the solid figure shape. This segmentation allows each step to address specific requirements without compromising overall performance
Solution Approach 2:
The additive manufacturing step creates a preliminary product structure with fibers and resin before subsequent pressurization steps. This preliminary structure serves as the foundation for achieving the final solid figure shape, allowing the system to benefit from both free modeling capability and shape accuracy
2Strength
If fiber content is increased to improve mechanical strength, then mechanical strength is enhanced, but the product becomes difficult to produce using only additive manufacturing technology
Solution Approach 1:
The process separates fiber integration from the additive manufacturing step by introducing dedicated pressurization steps. This allows high fiber content to be achieved in the final product while the additive manufacturing step focuses on creating the basic structure, making high-strength products manufacturable
Solution Approach 2:
The pressurization steps apply controlled pressure and temperature parameters to transform the preliminary product into a high-fiber-content final product. By changing physical parameters (pressure, temperature) rather than modifying the additive manufacturing process itself, high mechanical strength is achieved while maintaining ease of manufacture
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method produces fiber-reinforced plastic products with excellent mechanical strength and three-dimensional shapes that maintain their form, overcoming the limitations of traditional additive manufacturing.
Implementation Method 1
a second pressurization step of pressurizing, under heating, a product obtained through the first pressurization step
Implementation Method 2
a second pressurization step of pressurizing, under heating, a product obtained through the first pressurization step, and of obtaining a product having a volume smaller than a volume of the product obtained in the first pressurization step
Data Source
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AI summary
[Problem] To provide a product made of fiber-reinforced plastic that is lightweight and has high mechanical strength. [Solution] A method for producing a fiber-reinforced plastic product including fibers and a resin, the method including an additive manufacturing step, a first pressurization step, and a second pressurization step, in which the second pressurization step is a step of pressurizing, under heating, a product obtained through the first pressurization step, and of obtaining a product having a volume smaller than a volume of the product obtained through the first pressurization step.