With the continuous improvement of people's living standards,Insulation boxWe have also begun to enter our daily lives, with various types and forms of insulation boxes. However, no matter how they change, the function and function of insulation boxes remain unchanged, all of which have the effect of insulation to achieve heat and cold preservation.

The weather is getting colder, and the peak season for insulated boxes is approaching. The fast food industry and canteens of enterprises and institutions of all sizes are starting to purchase insulated boxes in large quantities. The surge in sales of insulation boxes should have been a good thing for insulation box manufacturers, but it has also brought many problems. Every year, I receive a phone call asking why the insulation box becomes heavier and its insulation performance decreases after being washed in the water. There are even complaints about eating accessories such as the small screws of the insulation box during meals. In fact, of course, we know how to guaranteeFood insulation boxThe importance of safe use, and indeed great emphasis has been placed on product sealing, assembly, and quality inspection. However, the problems reported by customers have been long-standing for many years, and it has been difficult to find a way to fundamentally eliminate them

Why does the insulation box encounter the above problems? According to summary, the waterproof performance of insulation boxes has become a major challenge in the insulation box industry.

As professionals in the production and sales industry of insulated boxes, we are not unfamiliar with the construction of insulated boxes. The 2-8 degree insulation box, whether it is a box cover or a box, is composed of the inner and outer layers of plastic materials respectively. In order to ensure the tightness, dozens of screws are generally used to tighten it. Polystyrene foam or polyurethane foam insulation layer is filled between the box cover and the inner and outer layers of the box. Why does it happen that the box becomes heavier after being cleaned with water? In the final analysis, the reason for poor sealing is still due to the use of many screws for connection. However, there are small gaps between the inner and outer layers of the box cover and the box. During cleaning, water slowly enters the interlayer between the box cover and the box through these small gaps. Although it will be dried or wiped dry after cleaning, it cannot be guaranteed that the water inside the interlayer is completely removed. Over time, the box becomes heavier and heavier, The presence of water in the interlayer also greatly reduces the insulation of the insulation box. In addition, the presence of multiple screws also poses a hidden danger to the safety of the insulation box. Although many manufacturers install plastic plugs outside the screws to prevent them from falling, over time, the plastic parts gradually age, leading to the situation mentioned earlier: accidentally, small screws and plastic plugs and other accessories fall into food, seriously affecting food safety and threatening human health.

The problem in the insulation box industry has been ongoing for many years, and although industry insiders are not afraid to talk about it, they are also unable to solve it and very helpless. In order to solve this long-standing problem, we have adopted a unique sealing structure design. The inner and outer layers of the insulation box cover have long been connected by manual screwing. Now, we have designed a special 'bite' structure for the connection between the inner and outer layers, and installed welding rods at the internal joints. After using the machine to weld the entire inner and outer layers of the insulation box cover, seamless connection is achieved. Due to the absence of gaps between the inner and outer layers, no liquid will enter the intermediate insulation layer during cleaning or when the box is exposed to rain, avoiding defects such as affecting the insulation effect and the weight of the box due to liquid intrusion.

Qingdao Rongfa Thermal Insulation Materials Co., Ltd. integrates the R&D, production and sales of EPS, EPP foam packaging products and thermal insulation materialsInsulation box manufacturerIt is a large-scale professional packaging and energy-saving insulation material enterprise in Qingdao.