How to improve the thermal insulation effect of the structure of the thermal insulation lunch bag?
Xiamen Obaili Manufacturing Ltd. shares with you the structure and composition of the thermal lunch bag, how to improve its thermal insulation effect as follows:
As the name suggests, the thermal insulation bag is a bag with cold/heat preservation function, which is suitable for packaging various temperature-sensitive products such as food, fresh food, and medicine. Also known as ice packs in the industry, it is often used in conjunction with phase change cold storage materials (refrigerants) to achieve the purpose of keeping cold/heat.
Insulation package structure
The thermal insulation package generally consists of three layers, which are the outer layer, the thermal insulation interlayer and the inner layer. The outer layer is made of oxford cloth or nylon cloth, which is strong and wear-resistant; the heat insulation interlayer is made of EPE pearl cotton insulation material, which has the function of keeping cold and heat. cleaning.
Insulation pack innovation
At present, the global market of thermal insulation packs is widely used, and short-distance cold/heat preservation such as food and fresh food can be solved by using thermal insulation pack devices to solve the problem of thermal insulation aging. Compared with insulation devices such as incubators, insulation bags are light and easy to fold, which can save space and reduce costs in transportation and storage. The disadvantage is that the thermal insulation time of the thermal insulation bag is limited, and the thermal insulation performance of the currently used pearl cotton material is general and it is not easy to be too thick when making it. We can optimize the thermal insulation time of the thermal insulation package from other perspectives. The following are for reference:
1. Material innovation
In terms of material, the most important thing is of course the thermal insulation layer. At present, most of the thermal insulation layers of thermal insulation packages use pearl cotton as the thermal insulation medium. Due to the high thermal conductivity of pearl cotton, its thermal insulation efficiency is limited. SOFRIGAM uses polyurethane foam as the thermal insulation layer, which greatly improves the thermal insulation time of the thermal insulation bag. The nano-based thermal insulation material developed by the Green Cold Chain Packaging Center replaces pearl cotton, and its thermal insulation performance is comparable to that of common XPS incubators.
2. Structural innovation
Starting from the optimization of the structure of the thermal insulation bag, it is necessary to consider the structural factors that affect the thermal insulation performance of the thermal insulation bag, such as no insulation layer material at the seams of the adjacent surfaces of the thermal insulation bag body, no windproof structure at the zipper of the bag mouth, etc. These parts also generate a lot of air convection Heat transfer leads to a decrease in thermal insulation performance.
Therefore, the structural design of the thermal insulation package can be optimized, and the integrated thermal insulation package body design is adopted, and the soft characteristics of the thermal insulation layer are used to reduce the joints and improve the thermal insulation performance. Corresponding tongue windproof structure can be designed around the zipper of the pocket, which is attached by Velcro, so that the zipper has double protection. In addition, when designing the thermal insulation layer structure, a double-layer thermal insulation material filling design can be carried out, a first thermal insulation layer is formed between the outer layer and the inner layer, and a second thermal insulation layer is formed between the inner and outer layers. It is filled with insulation materials such as pearl cotton, environmentally friendly EVA, wool felt and so on.
In a word, the application of thermal insulation packs has been involved in people's daily life. People can use thermal insulation packs for shopping, outings, and picnics to solve the problems of cold preservation, heat preservation and freshness preservation of food. In the future, the thermal insulation pack industry will surely pursue more lightweight, convenient, environmentally friendly and efficient The product.
Xiamen Obaili Manufacturing Ltd. has been specialized in making bags for 17 years. We are a professional bags manufacturer and exporter, focusing on the design, development and production of cooler bags, drawstring bags, duffel bags, backpacks, briefcases, diaper bags, tool bags and other outdoor leisure bags for travel, sports and camping.