US 12,186,941 B2
Method for homogenously incorporating filler into a self-adhesive compound, in particular a thermally crosslinkable self-adhesive compound, based on non-thermoplastic elastomer
Klaus Massow, Hamburg (DE); and Tillmann Köpke, Hamburg (DE)
Assigned to TESA SE, Norderstedt (DE)
Appl. No. 17/042,340
Filed by TESA SE, Norderstedt (DE)
PCT Filed Mar. 15, 2019, PCT No. PCT/EP2019/056629
§ 371(c)(1), (2) Date Dec. 2, 2020,
PCT Pub. No. WO2019/185374, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 10 2018 204 594.1 (DE), filed on Mar. 27, 2018.
Prior Publication US 2021/0094204 A1, Apr. 1, 2021
Int. Cl. B29B 7/74 (2006.01); B29B 7/00 (2006.01); B29B 7/48 (2006.01); B29B 7/60 (2006.01); B29C 48/00 (2019.01); B29C 48/44 (2019.01); B29K 21/00 (2006.01); B29K 105/00 (2006.01); C09J 7/38 (2018.01); C09J 11/04 (2006.01)
CPC B29B 7/7495 (2013.01) [B29B 7/007 (2013.01); B29B 7/485 (2013.01); B29B 7/603 (2013.01); B29C 48/022 (2019.02); B29C 48/44 (2019.02); C09J 7/383 (2018.01); C09J 11/04 (2013.01); B29C 2948/92885 (2019.02); B29K 2021/003 (2013.01); B29K 2105/0038 (2013.01); B29K 2105/0097 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A process of homogeneously incorporating a filler into a thermally crosslinkable self-adhesive composition based on a non-thermoplastic elastomer in a continuously operating assembly with a feed section and with a compounding section having one or more sections downstream of the feed section, where the self-adhesive composition comprises at least one solid component, at least one liquid component and at least one filler, and where the process comprises the following steps:
(a) charging of at least one portion of the at least one solid component, and optionally of a portion of the at least one liquid component, into the feed section;
(b) transfer of the components from step (a) from the feed section into a section of the compounding section;
(c) optional addition of further solid components or of further portions of the solid components into the compounding section;
(d) addition of the at least one liquid component into the compounding section, insofar as not yet charged in step (a) into the feed section;
(e) production of a homogeneous self-adhesive composition in the compounding section; and
(f) discharge of the self-adhesive composition
wherein, at least a portion of the at least one filler is added after predispersion in at least one dispersion liquid in a separate assembly which is a multiscrew extruder having at least one barrel section the resultant dispersion being added into a section of the compounding section.