TPU products are usually granular, and the processing methods include:
injection, extrusion, calendering, blow molding, molding, spinning, etc.,
wherein injection molding and extrusion molding applications account for up to 70% or more.
And TPU can also be used to make elastic fibers. Synthetic leather resin, adhesive.
Therefore, the application range of polyurethane elastomer is very wide.
The comprehensive performance of TPU products is outstanding, and it is applied in almost all fields.
It is a new generation of engineering plastics and is one of the economical and recyclable environmentally friendly plastic elastomers.
injection, extrusion, calendering, blow molding, molding, spinning, etc.,
wherein injection molding and extrusion molding applications account for up to 70% or more.
And TPU can also be used to make elastic fibers. Synthetic leather resin, adhesive.
Therefore, the application range of polyurethane elastomer is very wide.
The comprehensive performance of TPU products is outstanding, and it is applied in almost all fields.
It is a new generation of engineering plastics and is one of the economical and recyclable environmentally friendly plastic elastomers.
Hardness below 90A 80°C~90°C 3~4 hours
Hardness 95A or more 90°C~100°C 3~4 hours
Low hardness specification If the drying temperature is too high,
it will stick to the joint, and the drying time is too long, which is easy to produce yellowing.
Hardness 95A or more 90°C~100°C 3~4 hours
Low hardness specification If the drying temperature is too high,
it will stick to the joint, and the drying time is too long, which is easy to produce yellowing.
There are many methods for forming a TPU, in which injection molding is commonly used. Pay attention to the following points before injection molding:
1. TPU is easy to absorb moisture and must be fully dried before processing.
2. Design the mold structure according to the shrinkage rate of the material.
3. Reasonable ratio of recycled materials and cleaning treat ment when the machine is shut down.
1. TPU is easy to absorb moisture and must be fully dried before processing.
2. Design the mold structure according to the shrinkage rate of the material.
3. Reasonable ratio of recycled materials and cleaning treat ment when the machine is shut down.
The extrusion process can be used to prepare plastic pipes, plates, strips, profiles, bars, films, and the like. Extrusion of TPU is representative of it.
Pay attention to the following points before re-extrusion processing:
1. TPU is easy to absorb moisture and must be fully dried before processing.
2. Set the processing temperature according to the hardness and viscosity of the material.
3. Consider the screw structure and length to diameter ratio according to the material characteristics.
Pay attention to the following points before re-extrusion processing:
1. TPU is easy to absorb moisture and must be fully dried before processing.
2. Set the processing temperature according to the hardness and viscosity of the material.
3. Consider the screw structure and length to diameter ratio according to the material characteristics.