Thin-Wall Moulds
SINO MOULD specializes in the R&D and manufacturing of high-speed thin-wall moulds, with particular expertise in thin-wall food container moulds, covering core products such as 500ml box moulds, 1L box moulds, and thin-wall IML box moulds. Thin-wall food container moulds such as 500ml box moulds, 1L box moulds, and thin-wall IML box moulds are plastic products with extremely low costs; therefore, production costs must be highly controlled to achieve profits. With targeted technical design and optimization, SINO MOULD not only ensures high precision and stability of the moulds but also greatly improves production efficiency and reduces production costs, becoming the preferred partner in the global thin-wall food container mould field. Combined with our parent company DKM’s low-inertia high-speed injection moulding machines, we provide integrated turnkey solutions for thin-wall food containers from mould design, manufacturing to complete line production, enabling efficient and low-cost mass production.
Standard Thin-Wall Mould Details
Below are examples of the most common parameters for thin-wall moulds.
| Thin-Wall Mould Cavity Steel | S136 / DIN 1.2316 / M340 | Recommended Injection Machine | DKM DFS Series Injection Moulding Machine |
|---|---|---|---|
| Thin-Wall Mould Core Steel | S136 / DIN 1.2316 / M340 | Plastic Material | Food-grade PP/PS, typical MFI 20–35 g/10 min |
| Mould Base Standard / Steel | 4Cr13 Pre-hardened Stainless Steel | Ejection System | Stripper |
| Sliders, Inserts, Lifters Steel | High-strength tool steel with surface hardening treatment | Injection Process | High-speed injection, short cycle time, precise temperature control |
| Number of Cavities | 4-8 cavities | Injection Cycle Time | 8–12 seconds |
| Hot Runner System | High-speed hot runner system, suitable for thin-wall rapid filling | Mould Manufacturing Lead Time | 40–65 days |
Key Technical Points of SINO Thin-Wall Moulds
Aiming at the low-cost and high-efficiency mass production needs of thin-wall food container moulds, SINO MOULD has created exclusive technical solutions. Through the optimization of six core technologies, it achieves dual improvement of mould performance and production efficiency, effectively controls production costs, and ensures stable product quality.
Precision Machining Highlights for Thin-Wall Moulds
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Specially Designed Zero-Degree BeCu System for Thin-Wall Injection Moulds
The exclusive zero-degree BeCu system effectively improves mould heat conduction efficiency and structural stability, adapts to the rapid cooling needs of thin-wall parts, shortens the moulding cycle, and avoids warpage, deformation and other problems during the moulding of thin-wall parts, ensuring product dimensional accuracy.
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Specially Designed Cooling System for Thin-Wall Moulds
According to the characteristics of fast moulding speed and high cooling requirements of thin-wall food containers, a customized cooling water channel is designed with a dense and uniform layout to ensure balanced temperature in all areas of the mould, quickly take away moulding heat, shorten cooling time, improve production efficiency, and ensure product surface finish, reducing defects such as sink marks and air traps.
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High-Precision Machining Process
Advanced processes such as CNC precision machining and five-axis linkage machining are adopted to strictly control the key dimensions of the mould, with a tolerance accuracy of ±0.005mm, ensuring the dimensional accuracy and surface smoothness of the mould cavity and core, adapting to the precision moulding needs of thin-wall parts, and ensuring the consistency of multi-cavity production.
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Selected Steel Materials for Each Mould Part
According to the working characteristics of high-speed operation and high wear of thin-wall moulds, suitable steel materials are carefully selected for each part such as cavity, core, mould base and slider: the cavity and core are made of highly corrosion-resistant and wear-resistant DIN 1.2316 or S136 steel, which is processed by high-precision polishing; the mould base is made of 4Cr13 rust-resistant steel, which has high strength and long service life; the key moving parts are made of high-strength tool steel, which is subjected to special surface treatment to improve wear resistance and fatigue resistance, extend the service life of the mould and reduce maintenance costs.
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Specially Designed Venting System for Thin-Wall Moulds
According to the characteristics of high-speed injection and rapid filling of thin-wall moulds, a high-efficiency venting system is specially designed, adopting a micro-gap venting structure, which is accurately arranged at the end of the cavity and the area where weld lines are likely to occur. It can quickly discharge the gas generated during the injection process, avoid defects such as air traps, obvious weld lines and material shortage of thin-wall parts, ensure the surface of the product is flat and smooth, and improve filling efficiency to further shorten the moulding cycle.
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High-Speed Injection System
Equipped with the parent company DKM’s low-inertia high-speed injection moulding machine, an exclusive high-speed injection system is created to optimize injection parameters and mould adaptability, realizing high-speed, high-pressure and rapid filling. It adapts to the characteristics of thin wall thickness and high moulding difficulty of thin-wall parts, ensures that the plastic melt fills the entire cavity quickly and uniformly, reduces moulding defects, and greatly improves production efficiency to meet the demand for large-scale mass production of thin-wall food containers.
Mould Flow Analysis for Thin-Wall Moulds
Using Mouldflow analysis software, the injection process is simulated to optimize cavity structure, runner layout, and temperature control, ensuring balanced multi-cavity filling, uniform plastic distribution, and reduced risk of air traps or warpage for precision thin-wall moulds.
As it shows in the picture, the high-speed hot runner allows independent temperature control for each cavity, keeping plastic flow and temperature consistent, reducing deformation and air traps, and greatly improving injection stability and mould longevity.
Thin-Wall Mould Testing Video
Video demonstrating mould performance and stability under high-speed injection conditions, showing the efficient mass production process.