US 11,872,829 B2
Polyurethane protective film
Jason Schaner, Novelty, OH (US); Michael Ramsay, Newbury, OH (US); Steven Reekmans, Leuven (BE); and Xiang Liu, Glendale, CA (US)
Assigned to Avery Dennison Corporation, Mentor, OH (US)
Filed by Avery Dennison Corporation, Mentor, OH (US)
Filed on Sep. 16, 2022, as Appl. No. 17/932,804.
Application 17/932,804 is a continuation of application No. 14/569,946, filed on Dec. 15, 2014, granted, now 11,485,162.
Claims priority of provisional application 61/921,600, filed on Dec. 30, 2013.
Prior Publication US 2023/0013079 A1, Jan. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C08J 5/18 (2006.01); B41M 5/025 (2006.01); B05D 3/00 (2006.01); B29C 39/00 (2006.01); C09J 7/29 (2018.01); B65C 9/00 (2006.01); B41M 3/12 (2006.01); B29K 75/00 (2006.01); B29K 105/00 (2006.01); B29K 105/24 (2006.01); B29L 9/00 (2006.01); B29L 7/00 (2006.01); B41M 5/03 (2006.01)
CPC B41M 5/0256 (2013.01) [B05D 3/007 (2013.01); B29C 39/003 (2013.01); B65C 9/00 (2013.01); B65C 9/0015 (2013.01); C08J 5/18 (2013.01); C09J 7/29 (2018.01); B29K 2075/00 (2013.01); B29K 2105/0005 (2013.01); B29K 2105/24 (2013.01); B29L 2007/008 (2013.01); B29L 2009/00 (2013.01); B41M 5/03 (2013.01); C08J 2375/04 (2013.01); C08J 2475/04 (2013.01); C09J 2475/006 (2013.01); Y10T 428/1476 (2015.01); Y10T 428/24802 (2015.01); Y10T 428/28 (2015.01)] 33 Claims
OG exemplary drawing
 
1. A protective film suitable for use in outdoor applications, comprising at least two different polyurethanes; wherein:
the film is free or substantially free of polyvinyl chloride based polymer;
each of the at least two different polyurethanes comprise at least one of a polyurethane polymer, a polyurethane prepolymer, and a polyurethane copolymer; and
the film passes a rivet test in which (i) the film is applied over a painted aluminum panel having brazier rivet heads uniformly distributed over the aluminum panel such that the film is conformed around each rivet, (ii) the applied film and panel is dwelled for 24 hours at ambient conditions, (iii) a portion of the film around a rivet is then lifted and the diameter measured, (iv) the applied film and panel are then subjected to accelerated weathering including exposure to UV for 1,000 hours, and (v) after the accelerated weathering the portion of the lifted film is measured again and the diameter is compared to the measured diameter prior to accelerated weathering and the change in diameter is less than 0.0625 in (1.58 mm).