Scientific Achievement Registration: Multi-Cavity Ultra-Precision Thin-Wall Complex Single-Shot Mold

The Zhejiang Provincial Department of Science and Technology, as the highest administrative authority for S&T work in the province, is responsible for organizing and implementing S&T achievement registration. S&T achievement registration is an important part of S&T achievement management, implemented in accordance with the “Measures for S&T Achievement Registration” (Guo Ke Fa Ji Zi [2000] No. 542). All research projects that have passed appraisal, acceptance inspection, or have obtained patents may apply for registration. Registered S&T achievements are uniformly numbered by the Zhejiang Provincial Department of Science and Technology and, after public announcement, are issued an S&T Achievement Registration Certificate. This certificate is a required attachment for applying for the Zhejiang Province S&T Award and is also an important basis for enterprises to qualify for High-Tech Enterprise, Technology-Based Enterprise, High-Tech Enterprise R&D Center, and other qualifications. This achievement targets the demand for ultra-thin special-shape parts in high-end fields such as precision electronics and medical devices, with high technical content. Registration requires rigorous precision inspection and process verification. Zhejiang SINOMOULD Co., Ltd.’s independently developed “Multi-Cavity Ultra-Thin-Wall Special-Shape Box Injection Mold with High Sealing Performance” was registered as an S&T achievement by the Zhejiang Provincial Department of Science and Technology. This technological achievement breaks through industry bottlenecks in ultra-thin-wall part injection molding such as filling difficulty, warping deformation, and difficulty in controlling dimensional precision, signifying that SINOMOULD’s technical capability in the field of precision injection molds has reached an industry-leading level.

Core Technology: Solving Three Major Industry Bottlenecks of Ultra-Thin-Wall Injection Molding

Thin-wall injection molding typically refers to the molding of injection molded parts with a wall thickness of less than 1mm (or less than 1% of the product flow length). Compared with traditional injection molded parts (wall thickness of 2mm or more), thin-wall parts have significant advantages such as light weight, portability, material savings, reduced per-unit cost, and shortened molding cycles. However, thin-wall injection molding faces three major technical bottlenecks: filling difficulty — the thin-wall cavity creates extremely high resistance to melt flow, making it difficult to complete filling before the melt solidifies; warping deformation — thin-wall parts are highly prone to deformation during cooling due to uneven shrinkage; dimensional precision control — minute dimensional deviations in ultra-thin parts can lead to functional failure.

SINOMOULD’s R&D team achieved multiple technical breakthroughs in the design and manufacturing of multi-cavity ultra-thin-wall special-shape box injection molds through systematic technical research. In mold design, the core innovation of this technological achievement lies in the coordinated optimization of micro-structure runner design and precision temperature control systems. The R&D team ensures melt filling of the thin-wall cavity within an extremely short time through ultra-high-speed injection processes combined with precision venting system design, and precisely simulates the filling process using mold flow analysis software to optimize gate position and runner dimensions, avoiding defects such as insufficient filling and weld lines.

In injection molding, thin-wall injection molding requires extremely high injection speed and injection pressure, while also placing stringent demands on the precise control of the holding pressure curve. SINOMOULD’s R&D team effectively controls the shrinkage rate and warping deformation of ultra-thin-wall products by optimizing high-speed high-pressure injection processes and holding pressure curves. The multi-cavity design further improves production efficiency, enabling a single mold to produce more ultra-thin-wall special-shape box products within the same injection cycle, meeting the high-volume production demands of precision electronics, medical devices, and other fields.

Precision Inspection and Quality Control System Assurance

The dimensional precision of ultra-thin-wall special-shape box products is typically at the micrometer level, and any minor processing deviation may lead to product functional failure. In mold manufacturing, SINOMOULD relies on high-precision CNC processing equipment and a systematic precision manufacturing process system to ensure that the machining precision and surface quality of key components such as micro-structure runners and precision cavities meet design requirements.

In quality control systems, SINOMOULD has passed ISO9001 Quality Management System certification and IATF 16949 Automotive Industry Quality Management System certification, establishing a full-process quality control system covering mold design review, processing process monitoring, and assembly, commissioning, and inspection. Registration of this technological achievement requires rigorous precision inspection and process verification. Each multi-cavity ultra-thin-wall special-shape box injection mold undergoes high-precision dimensional inspection and strict trial mold verification before delivery, ensuring that the filling balance, cooling uniformity, and product dimensional precision of the mold meet design requirements, providing customers with stable and reliable production assurance.

Customer Value: Meeting Stringent Quality Requirements of High-End Markets

Ultra-thin-wall injection molded parts are widely used in high-end fields such as 3C electronics, medical devices, and precision instruments. SINOMOULD’s “Multi-Cavity Ultra-Thin-Wall Special-Shape Box Injection Mold with High Sealing Performance” technological achievement breaks through industry bottlenecks in ultra-thin-wall part injection molding such as filling difficulty, warping deformation, and difficulty in controlling dimensional precision. For customers, this technology means the ability to stably mass-produce high-precision ultra-thin parts, meeting the stringent quality requirements of high-end markets such as 3C electronics and medical consumables. The technological maturity assurance certified by provincial-level S&T achievement registration provides reliable technical support for customers’ ultra-thin special-shape part production in high-end fields such as precision electronics and medical devices.

According to the management requirements of the Zhejiang Provincial Department of Science and Technology, the S&T Achievement Registration Certificate is a required attachment for applying for the Zhejiang Province S&T Award, and registered achievements are incorporated into the provincial S&T achievement database for unified management. SINOMOULD will continue to advance in-depth R&D and industrialization of ultra-thin-wall precision injection mold technology, consolidating its technological leadership position in the field of precision injection molds.