US 12,277,865 B2
Methods and apparatuses for training installers of surface-protection film
James Yancy Farrow, Lake St. Louis, MO (US); Bobby Howard Cardwell, Lake View, SC (US); Amanda Smart Brown, Saint Louis, MO (US); Richard Anthony Dill, Penhook, VA (US); Michael Stephen Powell, Gainesville, FL (US); Jacob Neal Motley, Danville, VA (US); Nikolaie Arnold Brown, Spring, TX (US); Keister Logan Richardson, III, Danville, VA (US); and Igor Leonidovich Zheldakov, Reidsville, NC (US)
Assigned to Eastman Performance Films, LLC, St. Louis, MO (US)
Appl. No. 17/432,984
Filed by EASTMAN PERFORMANCE FILMS, LLC, Saint Louis, MO (US)
PCT Filed Feb. 12, 2020, PCT No. PCT/US2020/017849
§ 371(c)(1), (2) Date Aug. 23, 2021,
PCT Pub. No. WO2020/176259, PCT Pub. Date Sep. 3, 2020.
Claims priority of provisional application 62/810,603, filed on Feb. 26, 2019.
Prior Publication US 2022/0165180 A1, May 26, 2022
Int. Cl. G09B 19/24 (2006.01); B26D 3/08 (2006.01); B26D 7/00 (2006.01)
CPC G09B 19/24 (2013.01) [B26D 3/085 (2013.01); B26D 2007/0012 (2013.01); B26D 2210/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method to train an installer to cut a film without damaging an underlying substrate, the method comprising:
applying a stretchable surface-protection film to an electrically-conductive substrate provided with at least one irregularity; and
cutting the surface protection film with an electrically-conductive knife which, when in contact with the electrically-conductive substrate, causes one or more notifications to occur,
wherein the surface protection film comprises:
a stretchable polymer film layer;
an adhesive layer, on a first surface of the stretchable polymer film layer, which causes the surface protection film to adhere to the electrically-conductive layer when applied; and
a stretchable protective layer, applied on a second surface of the stretchable polymer film layer, which second surface is opposite the first surface.