The Role of Vertical Silicone Machines in the Mobile Phone Sector
Due to its eco-friendly nature and versatility, silicone products are increasingly integrated into everyday life. Liquid silicone rubber (LSR) protective covers offer several benefits: they are non-toxic, provide excellent cushioning, display high resistance to wear, are impervious to oil and water, possess good flexibility, deliver comprehensive protection, and do not yellow over time. These covers can be used with two-color overmolding molds and are effective for creating waterproof casings. Here, we will explore how liquid silicone is utilized for waterproofing mobile phones through vertical silicone machinery.
The innovative use of liquid silicone in the waterproof components of mobile phones has addressed the challenge of preventing water intrusion. Injection molding techniques that combine materials such as metal + silicone, plastic + silicone, and glass + silicone are emerging as a new standard for mobile phone waterproofing.
Benefits of Two-Color Vertical Silicone Machines for Waterproofing in Comparison to Traditional Methods
Conventional waterproofing methods for mobile phones, such as adhesive application and ultrasonic welding, involve manual processes that can compromise assembly precision and stability. These methods can lead to damage during assembly and disassembly and often result in subpar waterproofing. In contrast, the waterproof structure created through liquid silicone injection molding is streamlined, ensuring a compact overall design with high assembly precision and repeatability, leading to enhanced waterproofing capabilities that can achieve IP rating 5 or higher.
Moreover, the bonding strength of liquid silicone molded through vertical silicone machines when combined with materials like metal and plastic is substantial. This allows components to be easily disassembled and reassembled multiple times, facilitating convenient replacement while maintaining reliable waterproof performance.
Characteristics of Liquid Silicone Injection Molding in Vertical Silicone Machines
Liquid silicone is classified as a thermosetting material, meaning it solidifies and shapes when exposed to heat. Its flow characteristics include low viscosity, rapid curing, shear thinning, and a relatively high coefficient of thermal expansion. This material exhibits excellent fluidity and does not necessitate high clamping forces or injection pressures; however, it requires precise control in plastic injection processes. Designing the exhaust system can be quite challenging, and for certain products, a vacuum-sealed structure may be necessary, which demands high mold accuracy. Additionally, both the barrel and gating system must incorporate cooling features, while the mold itself should also include a heating mechanism.
