US 12,006,115 B2
Sack for liquid and pulverulent substances comprising a soluble surface portion, method and use therewith, and use of a soluble surface portion
Florian Baumeister, Augsburg (DE); Marc Zintel, Kissing (DE); Tobias Bosse, Augsburg (DE); Thomas Semlinger, Augsburg (DE); Florian Ellenrieder, Augsburg (DE); and Oliver Marek, Augsburg (DE)
Assigned to SIKA TECHNOLOGY AG, Baar (CH)
Appl. No. 16/494,787
Filed by SIKA TECHNOLOGY AG, Baar (CH)
PCT Filed Mar. 22, 2018, PCT No. PCT/EP2018/057242
§ 371(c)(1), (2) Date Sep. 17, 2019,
PCT Pub. No. WO2018/177859, PCT Pub. Date Oct. 4, 2018.
Claims priority of application No. 17163159 (EP), filed on Mar. 27, 2017.
Prior Publication US 2020/0095040 A1, Mar. 26, 2020
Int. Cl. B65D 65/46 (2006.01); B65D 33/16 (2006.01); B29L 31/00 (2006.01); B65D 30/18 (2006.01); C11D 17/04 (2006.01)
CPC B65D 65/46 (2013.01) [B65D 33/1691 (2013.01); B29L 2031/7128 (2013.01); B65D 31/08 (2013.01); B65D 33/165 (2013.01); C11D 17/042 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A sack for liquid or pulverulent filling materials having a portion composed of water-insoluble paper and/or water-insoluble polymer and an areal section (F) composed of a water-soluble polymer, wherein the areal section (F) accounts for more than 5% and not more than 35% of the surface area of the sack, wherein the areal section (F) is in direct contact with the filling materials of the sack, and wherein dissolution of the water-soluble polymer gives rise to an opening through which the sack can be emptied.