US 12,031,338 B2
PVC composite material, foam board, and flooring
Qinghua Fang, Zhejiang Province (CN)
Assigned to UNILIN BV, Wielsbeke (BE)
Filed by FLOORING INDUSTRIES LIMITED, SARL, Bertrange (LU)
Filed on Feb. 29, 2016, as Appl. No. 15/056,235.
Application 15/056,235 is a continuation in part of application No. 14/305,807, filed on Jun. 16, 2014, granted, now 9,527,975.
Claims priority of application No. 201410106959.3 (CN), filed on Mar. 21, 2014.
Prior Publication US 2016/0177579 A1, Jun. 23, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. E04F 15/10 (2006.01); B32B 3/06 (2006.01); B32B 5/18 (2006.01); B32B 27/06 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); C08J 9/00 (2006.01); C08J 9/08 (2006.01); C08J 9/10 (2006.01); E04B 5/02 (2006.01); E04C 2/20 (2006.01); E04C 2/24 (2006.01)
CPC E04F 15/107 (2013.01) [B32B 3/06 (2013.01); B32B 5/18 (2013.01); B32B 27/065 (2013.01); B32B 27/08 (2013.01); B32B 27/304 (2013.01); C08J 9/0014 (2013.01); C08J 9/0023 (2013.01); C08J 9/0052 (2013.01); C08J 9/0061 (2013.01); C08J 9/0066 (2013.01); C08J 9/0095 (2013.01); C08J 9/08 (2013.01); C08J 9/103 (2013.01); E04C 2/205 (2013.01); E04C 2/246 (2013.01); E04C 2/50 (2013.01); E04F 15/102 (2013.01); B32B 2250/02 (2013.01); B32B 2250/246 (2013.01); B32B 2266/0235 (2013.01); B32B 2307/102 (2013.01); B32B 2307/402 (2013.01); B32B 2307/554 (2013.01); B32B 2307/56 (2013.01); B32B 2419/04 (2013.01); B32B 2471/00 (2013.01); C08J 2201/03 (2013.01); C08J 2203/02 (2013.01); C08J 2203/04 (2013.01); C08J 2203/18 (2013.01); C08J 2205/052 (2013.01); C08J 2327/06 (2013.01); C08J 2423/06 (2013.01); C08J 2423/28 (2013.01); C08J 2433/00 (2013.01); C08J 2497/02 (2013.01); Y10T 428/249988 (2015.04)] 8 Claims
OG exemplary drawing
 
1. A flooring, comprising:
a polyvinyl chloride polymer wear-resistance layer;
a polyvinyl chloride polymer color film layer connected directly to the polyvinyl chloride polymer wear-resistance layer;
a polyvinyl chloride polymer substrate layer connected directly to the polyvinyl chloride polymer color film layer; and
a polyvinyl chloride polymer foam layer connected directly to the polyvinyl chloride polymer substrate layer, the polyvinyl chloride polymer foam layer being made by foaming of a polyvinyl chloride polymer composite material;
an underlayer disposed at one surface of the polyvinyl chloride polymer foam layer opposite the polyvinyl chloride polymer substrate layer wherein the underlayer comprises a cork pad;
wherein the polyvinyl chloride polymer color film layer is hot-pressed onto the polyvinyl chloride polymer substrate layer and the polyvinyl chloride polymer substrate layer is bonded to the polyvinyl chloride polymer foam layer; and
wherein the polyvinyl chloride polymer composite material comprises:
40-60 parts by weight of polyvinyl chloride polymer;
40-60 parts by weight of calcium carbonate;
0.2-0.6 parts by weight of composite foaming agent;
3-5 parts by weight of foam regulator;
2-4 parts by weight of toughener;
0.8-1.2 parts by weight of lubricant; and
2-3 parts by weight of stabilizer,
wherein the polyvinyl chloride polymer foam layer is free of plant fibers;
wherein the polyvinyl chloride polymer foam layer has a density greater than 0.8 g/cm3;
wherein the stabilizer comprises calcium stearate and zinc stearate in substantially equal amounts; wherein the polyvinyl chloride color film layer is in the form of a single layer.