Beautiful appearance and exquisite design are the goals that designers constantly pursue. In the design process of the sports thermos cup, designers use different plastic materials in different parts of the thermos cup to meet the needs of specific environments, so as to extend the product life and increase the aesthetics and practicality of the thermos cup. .
The two-color injection molding process achieves this effect and provides indispensable injection molding technology. Its application reflects the ingenuity of product technology and the designer’s pursuit of beauty.
In the manufacturing process of the thermos cup, we take advantage of the characteristics of two different plastic materials and use the two-color injection molding process to achieve different effects, such as soft touch, rich colors and changeable shapes, etc., and these effects are designed The designer’s careful design is reflected in different parts of the thermos cup.
1. Application of two-color injection molding in the design of plastic handles for thermos cups
The most widely used application of two-color injection molding on the handles of thermos cups is the design of the soft rubber lining on the handles of sports water bottles. Its function is reflected in:
① People’s hands will sweat during exercise. Because the soft rubber lining is not as smooth as hard rubber, it has a good anti-slip effect and feels more comfortable.
② When the overall color brightness of the thermos cup cover is low, use a jumping color with higher brightness as the color of the soft rubber lining to immediately reflect the movement of the thermos cup, making the visual effect more youthful and fashionable. This is also the designer’s key to designing thermal insulation. A common design technique for cup handles.
Looking closely at the edge of the soft rubber lining, we can see a gap-like step shape. It appears to avoid the blurred boundary between the two materials during the two-color injection molding process. It is also a technique used by designers when designing products. The manifestation of ability.
2. Two-color injection molding of plastic handle for thermos cup
The so-called two-color injection molding refers to a molding method in which two different colors of plastic materials are injected into the same plastic shell mold. It can make plastic parts appear in two different colors, and can make plastic parts present regular patterns or irregular moiré-like colors to improve the practicality and aesthetics of plastic parts.
3. Precautions for two-color injection molding of plastic handles for thermos cups
There must be a certain temperature difference between the melting points of the two materials. The melting point of the first injection of the plastic material is higher. Otherwise, the second injection of the plastic material will easily melt the first injection of the plastic material. Injection molding of this type is easy to achieve. Generally, the first injection is plastic raw material PC or ABS, and the second injection is plastic raw material TPU or TPE, etc.
Try to widen the contact area and make grooves to increase adhesion and avoid problems such as delamination and cracking; you can also consider using core pulling in the first injection to inject part of the plastic raw material in the second injection into the first injection Inside the first injection, the reliability of the fit is increased; the surface of the plastic shell mold for the first injection should be as rough as possible without polishing.
Post time: Jul-05-2024