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The requirements for two-color injection molding materials and equipment are as follows: Material compatibility: The two injection materials must be compatible with each other in terms of chemical properties and processing temperature. Generally, it is required that the melting point of the first injection material is higher than that of the second, and both materials …

Requirements for two-color injection molding materials and equipment Read More »

Appearance and feel: The two-shot injection molding process allows for multi-color splicing, soft and hard combinations, or the overlay of various material characteristics, creating a high-quality product surface and comfortable tactile experience. Integrated production: Fully automated, with the first mock examination molding, eliminating the need for subsequent bonding or manual assembly, significantly shortening the production …

Advantages of two-shot injection molding technology Read More »

Core turntable type (turntable mold core): Utilizing a rotatable mold core to perform two-stage injection molding on a fixed male mold, this process is simple and easy to operate, suitable for small to medium-sized batches of production. Core-pulling mold design: The material switching is achieved through internal sliders or core-pulling mechanisms within the mold, commonly …

Main types of two-color injection molding Read More »

First shot (substrate molding): Using the first injection unit of a two-shot injection molding machine, melt rigid engineering plastics (such as PC, ABS, or PP) and inject them into the first mold cavity to form the substrate part of the product. Mold core rotation or mold switching: After the first shot, the male mold separates …

Two-shot injection molding process Read More »

As industrial manufacturing upgrades towards high precision and intelligence, insert molding technology is also constantly innovating. On the one hand, multi-material and multi-insert composite molding has become mainstream, enabling the one-shot molding of complex products containing multiple different types of inserts. On the other hand, the application of smart inserts is becoming increasingly widespread, embedding …

Development trend of insert molding Read More »

Positioning accuracy: The positioning error of the insert must be controlled at the micrometer level, otherwise it will lead to poor assembly or failure of bonding of the product. Common positioning methods include mechanical positioning, vacuum adsorption positioning, etc. Material compatibility: It is necessary to match the thermal expansion coefficients of the plastic and the …

Technical key points and advantages of insert molding Read More »

The material and structure of the insert molding need to be selected according to the functional requirements of the product, and different types of inserts correspond to different application scenarios: Metal insert molding: Primarily made of copper, steel, aluminum, and other materials, common forms include threaded studs, nuts, and shaft sleeves. They are used to …

Common types of insert molding and applicable scenarios Read More »

The process of insert molding requires strict control over the precision of each step to avoid issues such as poor bonding and product defects. The core steps are as follows: Insert pretreatment: Clean, degrease, and perform rust prevention treatment on the inserts. Some metal inserts require surface roughening or electroplating treatment to enhance their bonding …

Key process flow of insert molding Read More »

The essence of insert molding lies in the “precise combination of heterogeneous materials”, with the core logic revolving around three key steps: “positioning – cladding – bonding”. The insert needs to be fixed by the positioning mechanism inside the mold to ensure no displacement or tilt during the injection molding process, providing a precise benchmark …

The core principle of insert molding Read More »

Medical-grade silicone offers several benefits that cater to the challenges of complex designs in medical devices: