The main types and differences of polyurethane foaming machines can be summarized as follows:
Main types
High-speed impeller polyurethane foaming machine
Working principle: Introduce gas through a high-speed rotating impeller to make the polyurethane liquid foam rapidly.
Features: The foaming speed is fast, but the bubble size may be difficult to control, and the foam uniformity may be affected.
High-pressure air polyurethane foaming machine
Working principle: Use high-pressure air to atomize the two reactants and mix them at high pressure in the mixing chamber to form foam.
Features: Even mixing, fine foam and good uniformity, automatic equipment cleaning, not easy to clog, but the price is relatively high.
Blast medium and low pressure polyurethane foaming machine
Working principle: Use a motor stirring head or air to assist in mixing the two reactants to form foam.
Features: Relatively low price, durable equipment, but the mixing uniformity may not be as good as the high-pressure air type, and it needs to be cleaned with solvent after use.
Spraying polyurethane foaming machine
Application scenarios: Mainly used for large-area spraying operations such as building exterior walls, roof insulation and waterproofing integration, cold storage, grain storage, chemical plant storage tanks and pipelines.
Features: It can achieve continuous and uniform spraying effects and improve construction efficiency.
Pouring polyurethane foaming machine
Application scenarios: Mainly used in solar water heater barrels, insulated water tanks, stainless steel water tanks, car portable refrigerators, beer barrels, anti-theft doors, cabinets, panels, on-site foaming packaging, aluminum profile cavities and other fields that require
precise foam infusion.
Features: It can accurately control the amount and position of foam infusion to ensure the quality and performance of the product.
Difference overview
Foaming principle and effect: Different types of polyurethane foaming machines have differences in foaming principles, resulting in different uniformity, fineness and production efficiency of foam. High-pressure air foaming machines usually produce more uniform and fine foam, while high-speed impeller types may be slightly insufficient in foam uniformity.
Equipment price and maintenance cost: Due to differences in design, manufacturing materials and processes, the prices of various types of polyurethane foaming machines vary. Generally speaking, high-pressure air foaming machines are more expensive but have relatively low maintenance costs (because their automatic cleaning function reduces the need for cleaning), while medium and low-pressure air foaming machines are cheaper but may require more frequent maintenance and cleaning.
Applicable scenarios and flexibility: Different types of polyurethane foaming machines are suitable for different application scenarios. Spraying foaming machines are more suitable for large-area, continuous spraying operations, while injection foaming machines are more suitable for scenarios that require precise control of the amount and position of foam injection. In addition, some high-end polyurethane foaming machines also have adjustable foaming parameters and functions to meet more diverse production needs.