With the continuous development of technology and the improvement of people's living standards, there is an increasing demand for the appearance of products. In the past, people mainly focused on the functionality and practicality when choosing to purchase items, and there are not many requirements for the appearance design. However, the situation has changed now.
There are several ways to achieve it:
1.Innovation in Machine Craft:
Currently, through innovative processes such as multi-stage injection molding, multi-layer injection molding, and multi-layer blow molding, it is possible to achieve a gradient color effect. This can be achieved by modifying the mechanical and control mechanisms to achieve a rainbow color effect. By achieving one-time molding using machines, it is possible to minimize secondary processing steps, reduce labor requirements, and avoid secondary contamination as much as possible.2.Color masterbatch:
This production method uses cold-change color masterbatch or heat-change color masterbatch to show the rainbow effect through temperature changes. First, a special temperature-sensitive masterbatch is selected and mixed with a transparent resin. This kind of masterbatch pigment has the characteristic of temperature sensitivity and can show different colors at different temperatures.The rainbow bottle shows one color at low temperature and another color at high temperature, thus forming a rainbow effect.
3.Spray technic：
This production method allows for more creative freedom. Firstly, prepare a well-designed pattern and convert it into a digital spray pattern template. Next, apply a base coat to the bottle to create a background color. Then, using a spray painting device, spray the rainbow design pattern onto the surface of the bottle. This method enables highly personalized customization as the patterns can be designed and modified according to customer requirements. Finally, through coating curing and surface treatment of the bottle, the rainbow bottle's appearance becomes more vibrant and durable.
