tengra packs all its products by using the Instapak foam .
Both components of instapak mixture result in a polyurethane foam package material. Polyurethane foams are chemically inerts. We find them all around in our daily life, by example in bed clothes, cushions and padded carpets.
After 20 seconds this foam acquire the highest volume and specific density. 15 minutes later acquire 90% of damping and quality properties. At the end of 5 hours it owns all his properties.
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