We will improve the reduction in strength of the meeting section, bulging due to shrinkage differences, and poor appearance through the control of filler orientation!
Nisshin Kogyo holds a patent for orientation control technology of fillers with anisotropy, which improves phenomena such as significant strength reduction at welds, distortion caused by uneven shrinkage, and color tone irregularities. This technology has effective cases against warping of molded products and is an important technology for our company. This case has improved the weld strength of long fiber reinforced resin test pieces to five times that of standard products. Our orientation control technology is applicable not only to long fiber reinforced resins but also to metallic colored resins, PP + talc-based materials, and other filler-added materials. We are currently also developing molding technology for materials added with CNF (cellulose nanofiber).
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■Control of Carbon Fiber (Long Fiber) Orientation Tensile Strength: Welded [2-point gate] dumbbell test specimen… Standard molding: 57 MPa ★Our technology ⇒ Achieved 288.63 MPa, maximum tensile strength: 310.00 MPa! The average tensile strength of 288.63 MPa exceeds the strength of 280 MPa for test pieces without a weld. Since the strength of test pieces with a weld is 57 MPa, the test pieces treated with Nisshin Industrial's long fiber orientation technology have achieved five times that strength. When filling the test piece from the two-point gate at both ends, a weld forms in the center, and in tensile tests, it generally breaks at the weld. By applying our orientation control, the orientation of the weld area changes so significantly that breaks can occur in areas other than the weld.
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It also improves the undesirable black streak appearance caused by the orientation of the paint-free metallic-colored resin. Since it is orientation control, it is different from weldless molding.
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■Orientation control molding of fillers: Controls the orientation of carbon fibers, glass fibers, talc, etc. In particular, it improves issues such as strength reduction at joints, bulging due to shrinkage differences, and appearance defects through the orientation control of fillers. This technology also addresses the appearance defects that occur as black streaks due to the orientation of paint-free metallic-colored resins. It is important to note that this is orientation control, which differs from weldless molding. ■Paint-free metallic resin molding technology: Demonstrates advantages different from painting and plating. ■Thick-walled molding: Achieves downsizing of molding machines through our unique intrusion (flow molding) technology. Unlike conventional technologies from other companies, it is possible to improve the quality of molded products to be equal to or better than that of standard injection molding. We have trademarked our distinctive technology as Revolution Injection Molding (Rev Inj). ■Flow analysis: Possesses analysis technology where molding engineers (first-class skilled workers) analyze and integrate actual molding phenomena with simulations.