In recent years, the popularity of hard polyurethane foam has been very high and the parts produced using this type of foam are rapidly expanding the market and general use. This type of hard polyurethane foam is known in the Iranian commercial market as wood foam and in the global market as Wood imitation Polyurethane Foam.
Today, due to the expansion of the decoration industry and the high cost of handmade decorative goods, along with the market need for mass production and overproduction of these parts, has led manufacturers to use a variety of polymeric materials to replace wood in this industry. Polyurethane foam is one of the most important of them.
A special group of hard polyurethane foam has been proposed as one of the best alternatives to wooden decorative parts.
In recent years, the popularity of hard polyurethane foam has been very high and the parts produced using this type of foam are rapidly expanding the market and general use. This type of hard polyurethane foam is known in the Iranian commercial market as wood foam and in the global market as Wood imitation Polyurethane Foam.
Features of polyurethane foam wood
– Suitable physical and mechanical properties
– Simple production and molding process
– Appropriate appearance level
– Low weight of manufactured parts
– High production speed
The liquid state of polyurethane foam raw materials facilitates the possibility of molding complex decorative parts and the reproducibility of uniform production of these parts.
Depending on the appearance, required properties, foam density and part size, molds used in the production of polyurethane wood foam from aluminum or steel, rubber or silicone, epoxy resin or other materials used in the molding industry are selected. . Injection of this type of foam is done according to the production volume and size of parts in the form of manual injection, injection with low pressure device and injection with high pressure device.
The most important feature in polyurethane wood foam is its density. According to the expected physical and mechanical properties of polyurethane wood foam, companies producing raw materials adjust the density of this type of foam between 60 to 700 kg per cubic meter. It should be noted that with increasing density, physical and mechanical properties will increase and on the other hand, the weight of manufactured parts will also increase.
Some chemical and process quantities of raw materials and polyurethane wood foam production system are:
Consumption temperature: 23-25 degrees Celsius
Mold temperature: 55-45 degrees Celsius
Weight ratio of polyol to isocyanate: 100 to (80 to 110)
Cream time: 40-50 seconds
Growth completion time: 180 seconds
Free foam density: 60-700 kg per cubic meter
25 / 5000 Translation results Molding time: 5-15 minutes