The difference between polyurethane soft foam and rigid foam

 

Polyurethane rigid foam

Rigid polyurethane foam material, referred to as polyurethane rigid foam, its consumption in polyurethane products is second only to polyurethane soft foam.

Rigid polyurethane foam is mostly closed-cell structure, which has excellent thermal insulation effect, light weight, high specific strength, convenient construction, etc. It also has the characteristics of sound insulation, shock resistance, electrical insulation, heat resistance, cold resistance, solvent resistance, etc. It is used for the insulation layer of refrigerators, freezers, cold storages, refrigerated vehicles and other insulation materials, buildings, storage tanks and pipeline insulation materials, and a small amount is used for non-insulation occasions, such as imitation wood, packaging materials, etc. Generally speaking, lower density polyurethane rigid foam is mainly used as thermal insulation (insulation) material, and higher density polyurethane rigid foam can be used as structural material (imitation wood).

Rigid polyurethane foam is generally foamed at room temperature, and the molding process is relatively simple. According to the degree of construction mechanization, it can be divided into manual foaming and mechanical foaming; according to the pressure during foaming, it can be divided into high-pressure foaming and low-pressure foaming; according to the molding method, it can be divided into pouring foaming and spray foaming.

 

Soft Polyurethane Foam

Soft polyurethane foam material, referred to as soft polyurethane foam for short, is a kind of soft polyurethane foam material with certain elasticity, which is the largest amount of polyurethane products in polyurethane products. Polyurethane soft foams are mostly open-cell structures with low density, good elastic recovery, sound absorption, breathability, thermal insulation and other properties. They are mainly used for gap filling, cushioning and vibration isolation applications to maintain their integrity and effectiveness. In industry and civil use, soft foam is also used as filter material, sound insulation material, shockproof material, decorative material, packaging material and thermal insulation material. According to the degree of softness and hardness, that is, the different load resistance performance, polyurethane flexible foam can be divided into ordinary soft foam, super soft foam, high load-bearing soft foam, high resilience soft foam, etc. Among them, high resilience soft foam and high load bearing soft foam are generally For the manufacture of seat cushions, mattresses. According to different production processes, polyurethane soft foam can be divided into block soft foam and molded soft foam. Block soft foam is a foam product that produces a large volume of foam through a continuous process and then cuts it into the desired shape. Plastic soft foam is a foam product that is directly mixed with raw materials and then injected into the mold to foam into the desired shape through the gap method. Our company buys roll-shaped foam, with many specifications and models, and the price is reasonable. Welcome to consult.