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Innovative and more sustainable PU applications in the cold chain industry

Covestro applies many years of rich experience in the cold chain market and in product development providing more innovative and more sustainable cold chain solutions . Covestro’s PU thermal insulation material helps to improve the thermal insulation efficiency of cold chain applications, reduces food waste, and ensures food safety.
Refrigerators that preservation freshness and save energy

PU helps preserve food

Many foods transported at room temperature are prone to spoilage, so cold chain transportation is often used to ensure food safety. Efficient cold chain transportation keeps perishable food well preserved, and PU is an essential element throughout the cold chain journey. The PU sandwiched between the insulation layers of various parts of refrigeration and freezing equipment can keep out the ambient temperature and ensures the freshness and safety of food.

PU helps save energy and reduces emissions

PU rigid foam plastic can be used in cold storage, refrigerated trucks and containers, and refrigerated display cabinets and commercial household refrigerators as an efficient thermal insulation material, and has made valuable contributions to energy conservation and the reduction of carbon dioxide emissions.
 
After Dr. Otto Bayer invented PU in 1937,Bayer Material Science (now Covestro) introduced polyurethane rigid foam as a thermal insulation material for cooling equipment in 1962. Last year, it also established a digital joint laboratory with the world's leading home appliance brand - Haier Group - to further improve the thermal insulation performance of PU. The newly developed Microcell four-in-one thermal insulation upgrade program offers better thermal insulation and a more efficient manufacturing technique.
An efficient cold chain industry can store perishable food well

PU helps protect the environment

According to national regulations, starting from January 1, 2019, no enterprise may use HCFC-141B as a foaming agent to manufacture refrigerated containers. Covestro is the first PU manufacturer to develop a more environmentally friendly cyclopentane foaming agent to replace 141B foaming agent in the refrigerated container industry. In 2015, it successfully helped the three largest refrigerated container manufacturers in the industry - Maersk, CIMC, and Singamas - to replace 100% of the 141B system, thus jointly creating a more environmentally friendly refrigerated container transportation industry.

Excellent performance of PU foaming systems

Covestro has developed rigid polyurethane foaming systems with different foaming agents or additive formulas based on the specific and current needs of customers. The features include the following:
Excellent thermal insulation performance: Closed-cell rigid foam material, widely used in cold and heat protection
Excellent physical properties: Individually adjustable physical properties and good dimensional stability
Excellent adhesion: Attachable to a wide variety of materials
Good high temperature resistance and durability
Good flame-retardant properties
PU cold chains help reduce food waste, ensures food safety, and helps to achieve the sustainable development goals of the United Nations.

Key Benefits

  • Food preservation PU can be used in the insulation layer of various parts of refrigeration and freezing equipment such as cold storage, refrigerated trucks and containers, and refrigerated display cabinets and commercial household refrigerators to protect from ambient temperatures and ensure the freshness and safety of food.
  • Excellent formula performance Rigid polyurethane foaming systems based on different foaming agent or additive formulas have an excellent thermal insulation performance, physical properties, adhesion, high temperature resistance, durability and flame retardant properties.
  • Energy conservation and emission reduction As an efficient thermal insulation material, PU has made valuable contributions to energy conservation and the reduction of carbon dioxide emissions.
  • Environmental protection PU cold chain solutions contain a cyclopentane foaming agent that replaces the 141B foaming agent to create a more environmentally friendly refrigerated container transportation industry.

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