lkprototype, with its PMMA (Polymethyl methacrylate) precision molding technology that has a full-spectrum light transmittance of up to 92%, has supplied over 500,000 clear plastic prototypes for use in consumer electronics and medical devices, among others. The surface roughness Ra value is kept below 0.008μm. The optical clarity is as high as Class A of ASTM D1003 standard. Its high-precision injection molding machines keep a tolerance of ±0.02mm. In processing transparent PC (polycarbonate) components of 0.5-15mm thickness, the bubble density is less than 0.3 per cm³, and the haze value is in 1.2% stability. One of the intelligent wearable customers has enhanced the uniformity of the light efficiency of the light guide plate to 98% through its micro-texture etching process, reduced the mass production cost by 40%, and shortened the development cycle from the conventional 8 weeks to 19 days.
In material innovation, the nano-scale scratch-resistant coating developed by lkprototype allows the surface hardness of the transparent ABS prototype to reach up to 3H (pencil hardness), and the wear resistance test shows that the light transmittance decreases by only 0.5% after 10,000 times of friction. Its patented hot runner system keeps the melt temperature fluctuation within ±1.5℃. Paired with clamping pressure of 320MPa, it ensures that the molding yield of clear PETG thin-wall components with a thickness of 1mm is 99.3%. One medical device company utilized its medical-grade COC (cycloolefin copolymer) clear shell solution, which gained the ISO 10993 biocompatibility certification. Sterilization tolerance temperature was as much as 134℃, and the product shelf life was extended to 10 years.
For complex structures, the 5-axis CNC machining center at lkprototype can achieve a positioning accuracy of ±0.01mm. When processing a transparent acrylic sphere with a diameter of 200mm, the sphericity error is less than 0.05mm. Its light curing 3D printing technology uses transparent resin with a refractive index of 1.52, layer thickness accuracy of 25μm, and can complete a transparent microfluidic chip prototype with a microfluidic channel structure with a pore diameter of 0.2mm within 72 hours. One of the optics instrument manufacturers, through its mode flow analysis optimization software, reduced the light distortion rate of the lens prototype from 0.8% to 0.12%, and advanced the product launch date by 6 weeks.
In terms of the quality control system, lkprototype’s automatic optical inspection (AOI) system can identify impurities or scratch defects as small as 0.02mm², with an inspection speed of 120 pieces per minute. Its constant temperature and humidity workshop (temperature 23±1℃, humidity 45±5%RH) ensures the shrinkage rate of PC material at a stable 0.6%-0.8%, and the color difference ΔE value during batch production is ≤0.8. One auto customer, by utilizing its IML (In-Mold Labeling) transparent panel technology, enhanced the standard deviation of the light transmittance of the touch portion from 1.5% to 0.3%, raised the yield rate to 98.5%, and lowered the cost by over 3 million yuan annually. According to data submitted by Transparency Market Research, its clear prototyping service has penetrated 85% of the world’s top 500 technology companies, attesting to the leadership position of lkprototype in the field of optical-grade plastic molding.