PROCESS FOR PREPARING POLYURETHANE SHEET/LAMINATE WITH REDUCED BUBBLES
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United States of America
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Issued Date -
Mar 13, 2025
app pub date -
Sep 12, 2022
filing date -
Sep 12, 2022
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Abstract
Described herein is a process for preparing polyurethane sheet/laminate with reduced bubbles, including the steps of applying a polyurethane system obtained by mixing an isocyanate component (A) and a polyol composition component (B) to form a base coat layer, where the components (A) and (B) are kept separately in tanks under vacuum before mixing, and the application of the polyurethane system is implemented via knife coating under relative humidity of 65% or below. Further described herein are a polyurethane sheet/laminate prepared by the described process and a synthetic leather made from the polyurethane sheet/laminate.
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