US 12,325,047 B2
Extrusion method and apparatus
Vincent Hoff, Molsheim (FR); and Christophe Epp, Molsheim (FR)
Assigned to ZEPHYROS, INC., Romeo, MI (US)
Filed by ZEPHYROS, INC., Romeo, MI (US)
Filed on Dec. 28, 2022, as Appl. No. 18/090,044.
Application 18/090,044 is a continuation of application No. 16/913,701, filed on Jun. 26, 2020, granted, now 11,590,530.
Application 16/913,701 is a continuation of application No. 13/982,080, abandoned, previously published as PCT/EP2012/000437, filed on Feb. 1, 2012.
Claims priority of application No. 1102035 (GB), filed on Feb. 4, 2011.
Prior Publication US 2023/0201873 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B05D 5/00 (2006.01); B29C 44/34 (2006.01); B29C 48/00 (2019.01); B29C 48/25 (2019.01); B29C 48/395 (2019.01); B29C 48/50 (2019.01); B29C 48/685 (2019.01); B29C 48/80 (2019.01); B29C 48/87 (2019.01); B29C 48/875 (2019.01); B29C 44/50 (2006.01); B29C 48/07 (2019.01); B29C 48/155 (2019.01); B29C 48/285 (2019.01); B29C 48/625 (2019.01); B29C 48/79 (2019.01); B29C 48/86 (2019.01); B29K 101/10 (2006.01); B29K 105/00 (2006.01); B29K 105/04 (2006.01); B29K 105/24 (2006.01)
CPC B05D 5/00 (2013.01) [B29C 44/3484 (2013.01); B29C 48/022 (2019.02); B29C 48/266 (2019.02); B29C 48/2694 (2019.02); B29C 48/395 (2019.02); B29C 48/501 (2019.02); B29C 48/686 (2019.02); B29C 48/834 (2019.02); B29C 48/875 (2019.02); B29C 44/50 (2013.01); B29C 48/07 (2019.02); B29C 48/155 (2019.02); B29C 48/288 (2019.02); B29C 48/625 (2019.02); B29C 48/79 (2019.02); B29C 48/832 (2019.02); B29C 48/865 (2019.02); B29C 2948/92561 (2019.02); B29C 2948/9259 (2019.02); B29C 2948/92704 (2019.02); B29C 2948/92809 (2019.02); B29C 2948/92876 (2019.02); B29C 2948/92885 (2019.02); B29C 2948/92904 (2019.02); B29C 2948/92971 (2019.02); B29K 2101/10 (2013.01); B29K 2105/0097 (2013.01); B29K 2105/04 (2013.01); B29K 2105/246 (2013.01); B29K 2995/0002 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A process for extruding a thermally activatable material onto a substrate comprising:
(a) feeding the thermally activatable material into an extruder via a feed section, which compresses and moves the thermally activatable material to an extrusion screw;
(b) moving the thermally activatable material along the extrusion screw, operating at 10 to 50 revolutions per minute, within a barrel of the extruder, the barrel having a length to diameter ratio of 20 to 16, through one or more zones by rotating the extrusion screw;
(c) passing the thermally activatable material from the extrusion screw through an extrusion die as a molten material; and
(d) extruding the thermally activatable material onto the substrate at a temperature below an activation temperature, where the thermally activatable material bonds to the substrate and cools;
wherein the extrusion screw rotates in a clockwise direction and a counterclockwise direction to create a discontinuous pattern or array of the thermally activatable material having one or more gaps free of the thermally activatable material;
wherein the thermally activatable material is engages with grooves formed in the barrel and;
equally spaced around an internal diameter of the barrel along a length of the extrusion screw; and
wherein a residence time of the thermally activatable material in the barrel is less than 10 minutes.