Patent No. EP3802990 (titled "Covering For Underlays Of Flooring") was filed by Progress Profiles on Apr 30, 2019. The application was issued on May 24, 2023.
A covering for underlays of flooring that enables perfect curing and drying of adhesive on large format tiles. The covering comprises a perforated polypropylene spun material that provides a secure bond to the underlay while allowing moisture to escape, preventing water retention and ensuring complete curing of the adhesive.

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