US 12,421,660 B2
Enhanced bonding and sealing between two fibrous materials
George Dah Ren Chen, Hong Kong (CN); and Yiu Wen Chang, Hong Kong (CN)
Assigned to ECOINNO (H.K.) LIMITED, Hong Kong (CN)
Appl. No. 18/020,218
Filed by Ecoinno (H.K.) Limited, Hong Kong (CN)
PCT Filed Aug. 9, 2021, PCT No. PCT/IB2021/057307
§ 371(c)(1), (2) Date Feb. 7, 2023,
PCT Pub. No. WO2022/029735, PCT Pub. Date Feb. 10, 2022.
Claims priority of provisional application 63/063,210, filed on Aug. 7, 2020.
Prior Publication US 2023/0272579 A1, Aug. 31, 2023
Int. Cl. D21C 9/00 (2006.01); D21H 11/12 (2006.01); D21H 11/14 (2006.01); D21H 11/18 (2006.01)
CPC D21C 9/007 (2013.01) [D21H 11/12 (2013.01); D21H 11/14 (2013.01); D21H 11/18 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for bonding two biodegradable materials comprising:
configuring a carrier, said carrier comprising a composite material with fibrillated cellulose having independently derived plant fibers, said composite material being generally free from toxic chemical additives, said chemical additives adapted for improving dry tensile strength, enhanced oil barrier, gas and/or liquid impermeability, a dry tensile modulus, or a dry tensile index;
wherein the composite material comprises properties of:
an oxygen transmission rate of about 8000 cm3 m−2 24 h1 or less,
a water vapor transmission rate of 3000 g m−2 24 h1 or less,
a dry tensile strength of about 30 MPa or higher,
a dry tensile modulus of about 4 GPa or higher, and
a dry tensile index of about 45 Nm g1 or higher;
wherein the carrier comprises walls connected to a base at one end for defining a volume, said carrier further comprising a lip extending from the other end of the walls;
configuring a cover having a portion thereof to engage the lip of the carrier at an engagement zone;
infusing a filler at the engagement zone; and
enclosing the volume defined by the carrier via sealing the cover and the carrier having the infused filler boding at a mechanical interlocking design with one or more protrusions or tongues and a frictional fit to holes in the engagement zone,
wherein the filler comprises a composite of fibrillated cellulose and independent of an adhesive.