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ACO Mold is a one-stop injection moulding factory that provides plastic injection mould design &manufacturing, injection moulding, surface coating, electroplating and product assembly. We have more than 9,000 square meters of standard manufacturing plant, equipped with a full set of precision mould processing workshops and ordinary mould processing workshops, measuring instrument testing laboratory, injection moulding workshop, providing customers with one-stop high, medium and low-end injection moulds manufacturing & Injection Moulding & Product Assembly Services to meet customer product development needs. The factory is equipped with a series of equipment such as CNC machining center, engraving machine, spark machine, wire cutting, grinding machine, milling machine, drilling machine and lathe etc.

Do you have the following problems when customizing plastic products?
---Mould type selection: Can't grasp the product features
---Injection mould price: The price is too high to accept
---Mass processing: Injection moulding quality is unstable
---Injection moulding products spraying: The appearance of injection moulding products does not meet the requirements
---Slow delivery: Cannot be delivered on time and in volume

Choose ACO Mould as your partner in injection moulding, these problems will be solved!
1. Professional mould type selection:
We have a variety of private mould, and have 1000 + mould design experience, so we can fully understand the product characteristics of various industries, to provide customers with excellent mould type selection services.
2. Competitive price
Our injection molds are very cost-effective, so ACO Mold can provides you with a more reasonable, more competitive and lower price.
Injection mould
Rapid Tooling (is also known as rapid injection moulding) is a tool that shapes a product of a certain shape, size, and surface accuracy in its specific shape. It is mainly used in large-scale production. Although the production and manufacturing costs of moulds are relatively high, the cost per product is greatly reduced due to mass production.
In order to meet the customer's schedule requirements, and the product size and surface have a good consistency, speeding up the development and verification of the product, the rapid mould manufacturing within 100-1000 sets can be satisfied here.
Rapid injection moulding
Most people think that 3D printing is a good substitute for injection moulding that requires mould making. Is this really the case? At the moment, 3D printing has already had a huge impact on the manufacturing industry. The prototype that used to cost a few hundred dollars and took weeks to process can now be designed in the morning, printed at night, and delivered to customers the next morning.
What is injection moulding?
injection mouldingInjection moulding is a processing method used in mass production of plastic parts with complex shapes. The advantages of the injection moulding are fast production speed, high efficiency, automatic operation, variety of colors, shapes from simple to complex, the size can be from large to small, and the size of the injection moulded part is accurate, the product is easy to be replaced, and injection moulded parts with complex shape can be moulded.
At a certain temperature, the completely molten plastic material is stirred by a screw, and the molten plastic material is injected into mould cavity by high pressure. After cooling and solidifying, the injection moulded parts can be obtained. The injection moulding is one of the importance plastic processing methods.
The plastic injection mould processing is to first add the plastic into the mould, and then the mould is continuously rotated and heated along the two vertical axes. The plastic in the plastic injection mould is gradually uniformly coated and melted and adhered to the entire cavity surface under the action of gravity and heat energy. It is moulded into a desired shape and is obtained by cooling and setting. The characteristics of plastic injection mould processing are as follows:
In order to meet the requirements of small and light injection moulded parts manufacturing, thin-wall injection moulding has become the most important injection moulding process. According to the definition of lightweight electronic plastic parts, "thin wall" means that the wall thickness is less than 1 mm. For large automotive plastic parts, the "thin wall" can be 2 mm. In summary, thin-wall injection moulded parts require changes in the processing process, higher pressures and speeds, shorter cooling times, and changes in part ejection and gate arrangement. The change of processing technology has also promoted the development of plastic injection mould, injection moulding machine and injection moulded parts design, and put forward higher requirements for injection moulding machines and injection moulds.
injection moulded thin wall products
The plastic injection moulding process is a cycle process. Once the once cycle is completed, the once injection moulding cycle is completed. Each cycle mainly includes quantitative feeding, melt plasticizing, pressure injection, mould filling, cooling, and mould opening and removal of injection moulded parts. After removing the plastic part, the mould is closed and the next cycle is performed. Each time the injection moulding cycle is completed, the injection device and the clamping device of the injection moulding machine respectively complete once working cycle, that is, the moving parts of the injection device and the clamping device are sequentially operated once in a predetermined order. There are 3 keys stages to complete injection moulding: plasticization, injection, and moulding.
injection moulding
Main moulding conditions of PE:
  1. Barrel temperature: The temperature of barrel is mainly related to the density of PE and the flow rate of melt. It is also related to the type and performance of the injection moulding machine and the shape of the first-class plastic part. Since PE is a crystalline polymer, the crystal grains absorb a certain amount of heat during melting, so the cylinder temperature should be 10 degrees higher than its melting point. For LDPE, the cylinder temperature is controlled at 140-200 °C, the HDPE barrel temperature is controlled at 220 °C, the temperature of the rear of barrel is taken as the smallest value, and the temperature of the front of the barrel is taken as the largest value.PE Plastic
  2. mould temperature: The mould temperature has a great influence on the crystallization condition of plastic part. The mould temperature is high, the melt crystallinity is high, and the strength is high, the shrinkage rate will increase accordingly. Generally, the mould temperature of LDPE is controlled at 30 ° C - 45 ° C, and the temperature of HDPE is correspondingly higher by 10-20 ° C.
  3. Injection pressure: Increasing the injection pressure is conducive to the filling of the melt. Since the fluidity of PE is very good, in addition to the thin-walled slender products, the lower injection pressure should be selected well, and the general injection pressure is 50-100 MPa. For the plastic parts with simple shape and large wall thickness, the injection pressure can be lower.
In order to ensure the smooth process of injection moulding and make the plastic moulded products quality meet the requirements, a series of preparatory work must be done before plastic injection moulding, including the inspection, coloring and drying of raw materials, the cleaning of material barrel, the preheating of inserts and the selection of demoulding agents.
Injection moulding is a method including injection and moulding. At a certain temperature, the completely molten plastic material is stirred by screw, and the molten is injected into mould cavity by high pressure, after cooling and solidifying, the injection moulded parts are obtained. There are six stages in the injection moulding process: mould clamping, injection moulding, pressure holding, cooling, mould opening, and plastic parts removal. These six stages directly determine the quality of injection moulded product, and these six stages are a complete continuous process.
ABS is commonly known as acrylonitrile butadiene styrene and is a copolymer of three monomers of acrylonitrile, butadiene and styrene. Due to the different ratios of the three monomers, it has different properties and melting temperatures. If the ABS with flow performance is mixed with other plastics or additives, the use and properties of ABS will be expanded, such as impact grade, heat resistance, flame retardant grade, transparent grade, enhanced grade, electroplating grade, etc.
Injection mould polishing is also called mould grinding, is generally a process in which the surface of mould cavity is polished by using oil stone, sandpaper, polishing paste, wool wheel, etc. so that the working surface of injection mould can be bright as a mirror. Injection mould polishing has 2 purposes, one is to increase the smoothness of plastic injection mould, so that the surface of the plastic moulded product is smooth and beautiful. And the other is making the injection moulded products easy to demould and reducing the injection moulding cycle time.
The deformation, bending and twisting of injection moulded parts are mainly caused by the fact that the shrinkage rate of the flow direction during plastic moulding is larger than that of the vertical direction, so that the shrinkage ratio of the parts is different and causing warpage and deformation. Warpage is also caused by that there is greater internal stress remaining inside the injection moulded part during injection moulding. All of them are manifestation of deformation caused by high stress orientation. Therefore, fundamentally speaking, mould design determines the warping tendency of injection moulded part. It is very difficult to suppress this tendency by changing the moulding conditions. Finally, the problem must be solved from the mould design and improvement. Warpage of injection moulded parts is mainly caused by following 3 aspects.
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