Flexible polyurethane foam (referred to as polyurethane flexible foam, PU flexible foam) refers to a type of flexible polyurethane foam with certain elasticity. More than half of the polyurethane foam products are soft foams. Today, a PU pigment manufacturer will share with you the application of PU soft foam.
PU soft foam is widely used in all walks of life. Its main uses include: furniture cushions, mattresses, vehicle seat cushions, fabric composite products, packaging materials and sound insulation materials.
According to the degree of hardness and load resistance, polyurethane flexible foam can be divided into ordinary soft foam, super soft foam, high load-bearing soft foam, high resilience foam, etc.
Polyurethane flexible foam can be divided into block foam and molded flexible foam according to the production process
PU soft foam is an ideal material for making furniture upholstery and car and boat seats. The cushion material is the area with the largest amount of PU soft foam.
When using polyurethane block foam to make seat cushions, it is generally cut into simple cuboids, such as bench seats and sofas on trains and buses. High-resilience foam has high bearing capacity and good comfort, and has been widely used in seat cushions, backrests, armrests, etc. of various vehicles.
PU soft foam has good air permeability and moisture permeability, suitable for making mattresses.
Slow rebound foam (viscoelastic polyurethane foam, memory foam) has been popular in recent years as mattresses, pillow cores, cushions and other cushioning materials.
The open-cell PU soft foam has good sound absorption and shock absorption properties, and can be used for indoor sound insulation materials with broadband audio devices, and can also be directly used to cover noise sources (such as blowers and air conditioners, etc.).
PU soft foam is also used as sound insulation material in equipment.
Cars, stereos, and speakers use open-cell foam as sound-absorbing material to make the outgoing sound more beautiful.
Sheets made of polyurethane block foam can be combined with PVC materials and fabrics to be used as the inner wall lining of automobile compartments, which can reduce noise and have a certain decorative effect.
Laminated composite material made of flexible foam sheet and various textile fabrics by flame compounding method or adhesive bonding method is one of the classic application fields of flexible foam.
The composite sheet is light in weight, has good thermal insulation and breathability, and is especially suitable for use as a garment lining. For example, it is used as clothing shoulder pads, bra sponge pads, linings of various types of shoes, and linings of handbags, etc.
Syntactic foam is also widely used in upholstery materials and furniture coverings, as well as vehicle seat covers.
The composite material made of fabric and PU soft foam, aluminum alloy and high-strength hook and loop tape are used to make medical arm, leg, neck circumference and other brace products, and the air permeability is 200 times that of plaster bandage.
Polyurethane can be used to make a variety of toys. For the safety of young children, polyurethane toys are basically soft. Most of the plastics used in toys are flexible foam, and a small amount is semi-rigid foam.
Using the whole skin PU soft foam raw material, a simple resin mold can mold whole skin soft foam toy products of various shapes, such as spherical model toys such as the earth and football, various animal model toys, etc.
The use of color spray skin technology can make the toy have gorgeous colors. Solid toys produced with slow-rebound raw materials slowly recover after being pressed, which increases the enjoyment of the toy and is more popular.
In addition to using the molding process to make toys, the leftovers of the block foam can also be cut into a certain shape, and bonded with PU soft foam adhesive to form toys and industrial products of various shapes.
Because PU soft foam has good elasticity and light weight, it is an ideal packaging material, especially suitable for lightweight valuables. By using appropriate manufacturing methods, the shape of the flexible blister packaging material can be completely matched to the packaged article.
PU soft foam can be used for heat preservation of containers and pipes. Although its heat preservation performance is not as good as that of rigid foam, it has good conformity with the surface of the object to be insulated, and can be used for temporary or long-term heat preservation, without the need for on-site injection molding like rigid foam.