US 12,331,468 B2
Composite waterproof corrugated paper and manufacturing method thereof
Ding-Shyan Ho, Tainan (TW)
Assigned to TAIWAN LUNG MENG ADVANCED COMPOSITE MATERIALS CO., LTD., Tainan (TW)
Filed by TAIWAN LUNG MENG ADVANCED COMPOSITE MATERIALS CO., LTD., Tainan (TW)
Filed on Feb. 22, 2021, as Appl. No. 17/181,326.
Claims priority of application No. 109122417 (TW), filed on Jul. 2, 2020.
Prior Publication US 2022/0002950 A1, Jan. 6, 2022
Int. Cl. D21H 27/36 (2006.01); B32B 3/28 (2006.01); B32B 7/12 (2006.01); B32B 27/10 (2006.01); D21F 11/12 (2006.01); D21H 17/14 (2006.01); D21H 17/68 (2006.01); D21H 19/22 (2006.01); D21H 21/16 (2006.01)
CPC D21H 27/36 (2013.01) [B32B 3/28 (2013.01); B32B 7/12 (2013.01); B32B 27/10 (2013.01); D21F 11/12 (2013.01); D21H 17/14 (2013.01); D21H 17/68 (2013.01); D21H 19/22 (2013.01); D21H 21/16 (2013.01); B32B 2250/05 (2013.01); B32B 2250/40 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A composite waterproof corrugated paper, comprising:
a stone paper medium having a first fluting surface and comprising at least one first body layer and at least one adhesive layer, wherein the at least one first body layer comprises a first smooth surface; wherein the at least one adhesive layer comprises an adhesive layer, the adhesive layer is disposed on the first smooth surface of the at least one first body layer; the first fluting surface is located on the at least one adhesive layer; and
at least one stone liner paper comprising at least one second body layer and a supplementary layer, wherein the supplementary layer is disposed on the at least one second body layer and is attached to a plurality of wave crests of the first fluting surface, so that the stone paper medium adheres to the at least one stone liner paper via the at least one adhesive layer;
wherein the at least one first body layer and the at least one second body layer respectively comprise an inorganic powder and a first plastic material; the inorganic powder accounts for 60 wt %-85 wt % of a weight of the at least one first body layer and a weight of the at least one second body layer respectively, and the first plastic material accounts for 15 wt %-40 wt % of the weight of the at least one first body layer and the weight of the at least one second body layer respectively; the at least one adhesive layer comprises a second plastic material, a third plastic material, and an elastic material; the second plastic material accounts for 30 wt %-50 wt % of a weight of the at least one adhesive layer, and the third plastic material accounts for 30 wt %-50 wt % of the weight of the at least one adhesive layer, and the elastic material accounts for 0 wt %-40 wt % of the weight of the at least one adhesive layer;
a composition of the supplementary layer is the same as the at least one adhesive layer or is made of a polymer;
wherein the at least one first body layer comprises two first body layers, and the stone paper medium comprises a first toughened layer; the first toughened layer is disposed between the two first body layers; wherein the first toughened layer comprises a fourth plastic material, an inorganic powder, and an additive; the fourth plastic material accounts for 60 wt %-80 wt % of a weight of the first toughened layer; the inorganic powder accounts for 20 wt %-30 wt % of the weight of the first toughened layer; the additive accounts for 0 wt %-20 wt % of the weight of the first toughened layer, the shape of the first toughened layer corresponds to the fluting surface of the two first body layers, the two first body layers are separated by the first toughened layer and do not contact each other;
wherein the at least one second body layer comprises two second body layers, and the at least one stone liner paper comprises a second toughened layer, the two second body layers are separated by the second toughened layer and do not contact each other;
wherein the second toughened layer comprises a fourth plastic material, an inorganic powder, and an additive; the fourth plastic material accounts for 60 wt %-80 wt % of a weight of the second toughened layer; the inorganic powder accounts for 20 wt %-30 wt % of the weight of the second toughened layer; the additive accounts for 0 wt %-20 wt % of the weight of the second toughened layer, the second toughened layer and the each second body layers are the same structure, the second toughened layer corresponds is attached flat between the two second body layers;
wherein the at least one adhesive layer is in a melted state upon being heated to 110-180 degrees Celsius.