US 12,280,573 B2
Biodegradable and/or home compostable sachet containing a solid article
Stefano Bartolucci, Singapore (SG); Emily Charlotte Boswell, Cincinnati, OH (US); and Su Anne Lee, Singapore (SG)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Feb. 6, 2023, as Appl. No. 18/106,099.
Application 18/106,099 is a continuation of application No. 17/070,205, filed on Oct. 14, 2020, granted, now 11,597,191.
Claims priority of provisional application 62/914,972, filed on Oct. 14, 2019.
Prior Publication US 2023/0173799 A1, Jun. 8, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 27/10 (2006.01); B32B 7/05 (2019.01); B32B 7/12 (2006.01); B32B 23/08 (2006.01); B32B 27/18 (2006.01); B32B 27/30 (2006.01); B32B 27/36 (2006.01)
CPC B32B 27/10 (2013.01) [B32B 7/05 (2019.01); B32B 7/12 (2013.01); B32B 23/08 (2013.01); B32B 27/18 (2013.01); B32B 27/306 (2013.01); B32B 27/36 (2013.01); B32B 2250/24 (2013.01); B32B 2305/30 (2013.01); B32B 2307/31 (2013.01); B32B 2307/5825 (2013.01); B32B 2307/7163 (2013.01); B32B 2329/04 (2013.01); B32B 2367/00 (2013.01); B32B 2391/00 (2013.01); B32B 2439/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sachet product comprising a solid article comprising an open cell foam and an ultimate biodegradable sachet comprising a front film and a back film comprising:
a. a front middle layer and a back middle layer comprise a material selected from the group consisting of cellulose, cellulose acetate, metalized cellulose, metalized cellulose acetate, and combinations thereof;
b. a front inner layer joined to the front middle layer and a back inner layer joined to the back middle layer wherein the front inner layer and the back inner layer comprise a material selected from the group consisting of polyvinyl alcohol, polybutylene succinate, polybutylene succinate adipate, polyhydroxylalkonate, carnauba wax, a biodegradable thermo-plastic starch, polyvinylidene chloride, and combinations thereof;
wherein the sachet comprises a MVTR of from about 12 to about 800 g/sqm/day at 38° C. and 90% RH;
wherein the front inner layer and the back inner layer being permanently joined around a perimeter to form a seal, the seal forming a compartment adapted for storing the solid article wherein the open cell foam comprises:
a water-soluble polymer;
a surfactant selected from the group consisting of anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants, zwitterionic surfactants, and combinations thereof;
a Percent Open Cell Content of from about 80% to 100%;
an Overall Average Pore Size of from about 100 μm to about 2000 μm.