Combining low warping and high strength: deformed cross-section chopped strands.
Flat Fiber
Changing the cross-section of glass fibers, exceeding the limits of molding. Nitto Boseki's "Flat Fiber" achieves high-dimensional dimensional accuracy and mechanical properties.
Nitto Bo's "Non-Circular Cross-Section Chopped Strand (Flat Fiber)" is a reinforcement material for thermoplastic resins (FRTP) that features a flat cross-sectional shape, such as rectangular or oval, differing from conventional circular glass fibers. It was developed as a solution for manufacturing sites struggling with "insufficient strength" and "deformation and warping" of molded products. Its greatest feature is the ability to minimize the difference in resin shrinkage rates between the flow direction (MD) and the transverse direction (TD). This enables significant reduction in warping of molded products and achieves extremely high dimensional accuracy. Furthermore, due to the orientation of the fibers, not only is surface smoothness improved, but it also boasts excellent flowability, allowing for reliable filling from thin-walled precision parts to large components. Particularly in high-filling areas with increased glass fiber content (GF), it exhibits superior mechanical properties, significantly surpassing the tensile strength and impact resistance (Izod impact value) of round cross-section products (conventional products). This is a proven product already on the market that strongly supports the manufacturing of high-quality, durable plastic molded products across various industries, including electrical and electronic devices, automotive, and aerospace.
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basic information
【Basic Structure】 - Product Type: FRTP (Thermoplastic Resin Reinforcement) Chopped Strand. - Technical Features: Flat-shaped cross-section glass fiber (Flat Fiber). - Status: Marketed (Available for Sale). 【Main Functions and Characteristics】 - Low Warpage and High Dimensional Accuracy: Minimizes the shrinkage difference between MD (Machine Direction) and TD (Transverse Direction). - Surface Smoothness: Enhances the aesthetic finish of molded product surfaces. - Excellent Fluidity: Long spiral flow length (Bar Flow Length), excellent for thin-walled and composite molding. 【Examples of Mechanical Properties】 - Please refer to the materials.
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Applications/Examples of results
It is adopted in a wide variety of advanced industrial fields where high precision and high strength are required simultaneously. ● Main application areas 【Electronics field】: Precision connectors, internal frames of smartphones, various enclosures (suppressing warpage to enhance fitting accuracy and achieving a smooth surface). 【Automotive field】: In-vehicle sensor covers, mechanical parts, thin-walled high-strength components around engines. 【Aerospace field】: Interior and structural components that require lightweight design and extremely high dimensional accuracy and reliability. 【Sports equipment】: Gears that require impact resistance, moderate rigidity, and excellent appearance quality. ● Points of adoption and effectiveness - Solves conventional issues such as "I want to increase the GF filling rate, but the fluidity decreases and molding becomes impossible" and "Poor yield due to warpage after molding." - Maintains high fluidity even at high filling rates, increasing the design freedom of molds and significantly contributing to improvements in molding defects and yield.
Company information
Nittobo Group: Creating a Healthy and Comfortable Future The Nittobo Group is dedicated to enhancing social value and contributing to a prosperous society. Under our long-term vision, "Big VISION 2030," we strive to be a Global Niche No. 1 provider in "Environment & Energy," "Digitalization," and "Health & Safety." Combining a century of expertise in glass fiber, functional chemicals, and textiles, we serve as the best partner for our customers' product development.
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