Polyurethane (PU), a type of polymer, possesses a thermoplastic linear structure with good stability, chemical resistance, and resilience.
The molding of polyurethane foam involves two stages: the foaming process and the curing process. The process from the mixing of raw materials to the cessation of foam volume expansion is known as the foaming process
Expansion slow rebound sponge is a type of sponge developed in the production of slow rebound sponge, utilizing temperature-sensitive and viscoelastic propertie
To start a sponge foam factory, what mechanical equipment do you need to understand? Let me briefly introduce the required machinery.
Foam products are subject to high consumer demands for comfort and performance. Therefore, manufacturers must rely on advanced testing tools to ensure the quality and consistency of their products. Here are some devices used for foam product testing fyr.
Yellowing in polyurethane foam can be attributed to various factors and falls into four main categories:
Polyurethane foam(PU foam) primarily consist of polyurethane as their main component. The raw materials primarily include polyisocyanates and polyols, with the addition of various additives, the most crucial of which are a series of foaming agents related to the foaming process.
The apparent hardness of polyurethane foam is predominantly shaped by the following elements:
In China, a foam density of around 50 is considered good, as anything over 50 likely contains additives that you might not want in your foam.
Within the industry, sponge foam is typically classified according to its density. In the market, you can commonly find two primary categories of sponge foam: high-density sponge foam and regular sponge foam. These two types are easily distinguishable by their appearance and texture.
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