How to Cut Polyurethane Foam

 

Polyurethane foam is divided into soft polyurethane foam, fast rebound polyurethane foam, rigid polyurethane foam,

 

Soft polyurethane foam mainly has a thermoplastic linear structure, which has better stability, chemical resistance, resilience and mechanical properties than PVC foam, and has less compression deformation. It has good thermal insulation, sound insulation, shock resistance and anti-virus performance. Therefore, it is used as packaging, sound insulation, filter material.

 

The performance of fast rebound polyurethane foam is between plastic and rubber, oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness and elasticity. Mainly used in shoe industry and medical industry. Polyurethane can also be used to make adhesives, coatings, synthetic leather, etc.

 

Rigid polyurethane foam has the advantages of light weight, sound insulation, excellent thermal insulation, chemical resistance, good electrical properties, easy processing, and low water absorption. It is mainly used in construction, automobile, aviation industry, thermal insulation structural materials.

How to Cut Polyurethane Foam

 

Cutting polyurethane foam is generally a special polyurethane foam cutting machine; it must be operated by a professional master.

 

The polyurethane foam cutting machine forming machine is roughly divided into three main parts:

1. Hydraulic part: In the hydraulic system, attention should be paid to the cleanliness of the hydraulic oil to maintain the quality of the hydraulic oil. The hydraulic oil with good stability and high quality should be used. In addition to regular replacement, its work should be properly controlled. The temperature should be below 50℃ to avoid the deterioration of the stability of hydraulic operation.

2. Mechanism part: The mechanism part should be regularly maintained and lubricated to reduce the friction coefficient and reduce wear. The nuts and locking screws on the head plate should be checked regularly to prevent the machine from breaking due to uneven force. The mold thickness adjustment mechanism should regularly check whether the large gear or chain of the transmission shaft is offset or loose. Whether the pressure plate screw on the gear is loose, whether the lubricating oil is sufficient, etc.

3. Electric control part: traditional injection machines use contact relays to switch various actions, which often fail due to loose contact screws and aging contacts. Usually, new products should be replaced after one million times of use to ensure the stability of electronic control. . In particular, environmental factors such as dust adhesion and air humidity will also affect the operation of the machine. Modern injection machines use contactless integrated circuits, and the connection of wires is greatly reduced, which significantly improves the defects caused by wires and improves stability.