What are PU injection safety shoes?
The injection method is a popular way to create a safety footwear, the sole is directly attached to the upper injected by a plastic material (usually PU), after the injection and during the cooling time, the upper and the outsole bind together very strongly.
What types of outsole used for injection safety shoes?
PU Single density: the midsole and outsole are made of one density PU,
2. PU/PU: is a double-density sole made of PU (the midsole and outsole are made of different density PU). It has some excellent benefits that single density doesn’t has. It can be made of two colors (outsole one color, midsole the other color),making the whole shoe look more better. Normally the outsole is made of low density, so it provides a high abrasion working surface and the midsole made of high density PU, so the soft PU midsole provides good impact absorption and wearing comfort. Whether you are standing, moving or walking, the main stressed area for single density outsole is the whole outsole; but for dual density outsole, the soft PU midsole can share the stress, folding capability of outsole is improved, so the shoes are durable.
3. PU/TPU: The outsole (TPU) is made previously, in a separate process. The sole is attached to upper injected by PU material.
4. PU/RUBBER:is made previously, and attached to upper by PU.
This is a general overview of PU injection safety shoes, for more information about the safety shoes, please click HERE!
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