CN Mould & Plastic Limited

Waterproof Design Studies

03
03, 2026
Understanding the Slider Mechanism in Multi-Shot Injection Molds – A Case Study of the First-Color Top Cover
In the world of injection molding, complex part geometries often require equally complex mold designs. One such example is the first-color top cover shown in Figure 1-1, which features an innovative s...
10
02, 2026
Tackling Complex Overmolding: Parting Lines, Ejection Strategy & Gate Design
Designing a mold for a complex overmolded part is always a challenge, but some projects truly push the boundaries. This blog walks through the critical thinking and solutions for a particularly intric...
26
01, 2026
Product and Equipment Specification for Two-Color Mold
Figure 1-1 presents a two-color drawing of an automotive interior component, where the green section is the first-shot PP+30% GF material (hard plastic) and the orange section is the second-shot TPE m...
19
01, 2026
Analysis of the Seesaw Mechanism and Hamburger Structure in Two-Color Injection Molding
Product EjectionThe ejection of this two-color product is relatively straightforward. The ejector rod of the injection molding machine pushes the ejector plate and the ejector retainer plate, which in...
15
01, 2026
Combined Slider Structure with Sub-slider on Fixed Half for Two-color Mold
Product EjectionThis mold is a typical two-color mold with a rotating moving half. After the first color product is injection molded, the mold opens for the first time. The moving half then rotates 18...
08
01, 2026
Three-Color Molding with a Two-Color Mold
Product EjectionThe ejection structure of this mold, although not overly complex, consists of three parts: the first-color cavity plate ejection, the second-color cavity plate ejection, and the moving...
29
12, 2025
Three-Color Molding with a Two-Color Mold
1.1 Product DescriptionFigures 1-1 and 1-2 show a three-color product diagram and an exploded view of a daily item, respectively. The color components are as follows:l First color green ①: ABS materi...
22
12, 2025
Leverage Structure for Two-Color Mold
Product DescriptionFigure 1-1 shows a two-color product drawing of a daily item. The first color, green, is made of PA66 + 30% GF compound, and the second color, orange, is made of TPU compound (soft ...
15
12, 2025
Behind the Scenes: Precision Engineering in Two-Color Injection Molding
In the world of injection molding, achieving high precision and durability in multi-material components requires meticulous attention to mold design, material selection, and process control. Today, we...
08
12, 2025
Special Cam-Pin Structure for Two-Color Molds
Product DescriptionFigure 1-1 shows a two-color product drawing of an automotive part. The outer green layer is made of HDPE compound (hard plastic), and the inner orange layer is made of TPE compound...