(19)
(11) EP 2 612 969 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.11.2013 Bulletin 2013/45

(43) Date of publication A2:
10.07.2013 Bulletin 2013/28

(21) Application number: 13000048.2

(22) Date of filing: 07.01.2013
(51) International Patent Classification (IPC): 
D21H 13/40(2006.01)
 E04C 2/04(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 09.01.2012 US 201213345868

(71) Applicant: Johns Manville
Denver CO 80202 (US)

(72) Inventor:
  • Bennett, Glenda Beth
    Toledo, 43614 (US)

(74) Representative: Mai, Dörr, Besier 
Patentanwälte Steuerberater/Wirtschaftsprüfer John-F.-Kennedy-Straße 4
65189 Wiesbaden
65189 Wiesbaden (DE)

   


(54) Microfiber-containing fiber reinforced facer mats and the method of making


(57) Fiber-reinforced composite mats are described that include a non-woven web of fibers. The web of fibers may include a first group of fibers having an average fiber diameter from about 8 µm to about 25 µm, and a second group of fibers having an average fiber diameter from about 0.5 µm to about 6.5 µm. A binder bonds together the non-woven web of fibers into the fiber reinforced composite having an air permeability of 250 cfm/ft2 or less. Also described are gypsum boards that include one or more facers affixed to at least one surface of the gypsum board. The facers may be made from the above, described fiber-reinforced composite mats.







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