In recent years, with the vigorous development of new e-commerce, the demand for cold chainInsulation boxThe demand for has increased to a new order of magnitude. The market for cold chain insulated box packaging is huge, but there are many problems with cold chain logistics.

Cold chain insulated box object

Products that are sensitive to temperature, such as food, medicine, biological products, fresh food, etc., are all cold chain insulated boxes.

Cold chain logistics model

There are two types of cold chain logistics methods: active cold chain and passive cold chain.

Active cold chain is a type of cold storage and refrigerated vehicle that uses active refrigeration equipment. Its characteristic is stable and reliable, but it is only suitable for the storage and transportation of a large number of products, and is generally used for insulation boxes and bags of passive refrigeration technology. Its characteristics are small size, flexibility, and can be used for dispersing products and "one kilometer behind Z", generally used for B2C. Temperature controlled packaging absorbs excess heat through the phase change process of the refrigerant. Reduce heat exchange inside and outside the packaging through insulation materials.

Problem with refrigerant storage

One is that the phase transition temperature is too narrow. The current phase change temperatures of low-temperature storage agents are mainly -18 ℃ and 0-2 ℃, while the cost of 2-10 ℃ storage agents required for bulk fruits and vegetables is higher and the latent heat of phase change is lower.

The second is slow cold storage. Because the cold storage agent mainly uses static cold storage in cold storage, the thermal conductivity is low, the heat exchange efficiency is low, and the cold storage is slow, which affects the efficiency of use.

Thirdly, the cost is too high. At present, due to the imperfect recycling mechanism of refrigerant and the high cost of temperature control packaging, it cannot be widely used.

The Development Direction of Cold Chain Insulating Box Storage Agent

1: Develop high-performance cold storage agents at 2-10 ℃; 2. Research and development of rapid cold storage technology. Improve the thermal conductivity of the refrigerant; 3. Establish a recycling mechanism for refrigerant storage.

Is there a problem with insulation packaging materials?

2: White pollution. Petroleum based foam materials are currently the most economical and effective insulation materials, but they cannot be degraded and their export products are limited. Secondly, the cost is high. PU and aerogel have excellent thermal insulation performance, but their raw materials and processing costs are too high, which seriously restricts their popularization and application.

3: Recycling issues. Currently, insulated containers are commonly used, resulting in significant resource waste.

The Development Direction of Thermal Insulation Packaging Materials

Biodegradable petroleum based foam materials are one direction. Biobased insulation materials adopt new foaming processes such as microwave, and use biological materials as raw materials to develop new environmentally friendly insulation materials. In addition, foldable and recyclable insulation containers and their recycling mechanisms are also a direction for the development of insulation packaging materials.