US 12,486,436 B2
Hot melt composition
Masaaki Dobashi, Yokohama (JP); Takahide Morishita, Osaka (JP); and Koji Shirai, Osaka (JP)
Assigned to HENKEL AG & CO. KGaA, Duesseldorf (DE)
Filed by Henkel AG & Co., KGaA, Dusseldorf (DE)
Filed on Jan. 25, 2022, as Appl. No. 17/583,278.
Application 17/583,278 is a continuation of application No. 16/158,810, filed on Oct. 12, 2018, abandoned.
Application 16/158,810 is a continuation of application No. PCT/JP2017/020734, filed on May 30, 2017.
Claims priority of application No. 2016-108867 (JP), filed on May 31, 2016.
Prior Publication US 2022/0145142 A1, May 12, 2022
Int. Cl. C09J 11/06 (2006.01); C09J 5/06 (2006.01); C09J 9/00 (2006.01); C09J 125/10 (2006.01); C09J 153/02 (2006.01); C09J 191/00 (2006.01); F21S 45/50 (2018.01); C08K 5/01 (2006.01); F21S 8/00 (2006.01); F21S 41/20 (2018.01); F21S 41/29 (2018.01); F21V 31/04 (2006.01)
CPC C09J 153/02 (2013.01) [C09J 5/06 (2013.01); C09J 9/00 (2013.01); C09J 11/06 (2013.01); C09J 125/10 (2013.01); C09J 153/025 (2013.01); C09J 191/00 (2013.01); F21S 45/50 (2018.01); C08K 5/01 (2013.01); C09J 2301/408 (2020.08); C09J 2301/414 (2020.08); F21S 8/00 (2013.01); F21S 41/28 (2018.01); F21S 41/29 (2018.01); F21V 31/04 (2013.01)] 16 Claims
 
1. A method of forming a removable article, the method comprising:
applying a hot melt adhesive to a first substrate at a temperature between 180° C. and 210° C., inclusive, wherein the hot melt adhesive has a shear adhesion value of between 2 N and 6 N, inclusive, the hot melt adhesive comprising:
a thermoplastic block copolymer present in an amount between 4 wt % and 10 wt %, inclusive, based on the total weight of the hot melt adhesive, the thermoplastic block copolymer comprising a styrene-ethylene-ethylene/propylene-styrene (SEEPS) block copolymer,
a hydrocarbon-based oil having an aniline point of 135° C. or more, the hydrocarbon-based oil being present in an amount between 40 wt % and 80 wt %, inclusive, based on the total weight of the hot melt adhesive, and
a polycarbonate diol present in an amount between 3 wt % and 15 wt %, inclusive, based on the total weight of the hot melt adhesive; and
applying a second substrate onto the hot melt adhesive to form the removable article, wherein:
the shear adhesion value of the hot melt adhesive is a maximum load before adhesive failure as determined by a shear test, the shear test being conducted using two polycarbonate plates bonded together with a layer of the hot melt adhesive having a width of 25 mm and a length of 5 mm, and the shear test comprising subjecting the polycarbonate plates bonded together with the layer of hot melt adhesive to a tensile tester operating at a tension speed of 50 mm/min at a temperature of 23° C. until adhesive failure occurs.