Application US20200063347

WASTE RECYCLE COMPOSITION
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US20200063347

1. A composition comprising, or obtained by combining: (6) (3)

a. waste/recycle cellulose fibers, and

b. cellulose ester (CE) staple fibers having: i. a denier per filament (DPF) of less than 3, or

ii. a cut length of less than 6 mm, or

iii. crimping, or

iv. non-round with a DPF of less than 3, or

v. a combination of any two or more of (i)-(iv), and

c. water.

2. The composition of claim 1, wherein the composition has a consistency of at least 0.2 wt. %. (0)

3. The composition of claim 1, wherein the CE staple fibers are added dry, or are obtained from solvent spun filaments, or both, and no plasticizer is added to the composition and the CE staple fibers and the filaments from which they are cut are not surface hydrolyzed. (0)

4. The composition of claim 1, wherein the CE staple fibers have a cut length, and the ratio of cut length to DPF is not more than 5:1, or not more than 3:1, or nor more than 2.5:1. (0)

5. The composition of claim 1, wherein the composition has a Canadian Standard Freeness of less than 400. (0)

6. The composition of any claim 1, wherein the CE staple fibers are crimped and have a ratio of crimps per inch: DPF within a range of 5:1 to 14:1. (0)

7. The composition of claim 1, wherein a portion of the CE staple fibers are obtained from broke compositions. (0)

8. A process for making a waste/recycle composition comprising: (6) (3)

a. combining waste/recycle cellulose fibers, cellulose ester (CE) staple fibers, and water in a hydropulping vessel, and

b. agitating the cellulose fibers, CE staple fibers, and water to obtain a furnish composition having a consistency of less than 50 wt. %;

wherein the cellulose ester (CE) staple fibers have: i. a denier per filament (DPF) of less than 3, or

ii. a cut length of less than 6 mm, or

iii. crimp, or

iv. non-round with a DPF of less than 3, or

v. a combination of any two or more of (i)-(iv).

9. The process of claim 8, wherein the agitation occurs in a hydropulper. (0)

10. The process of claim 8, wherein the composition is agitated in a hydropulper and fed as an effluent to: (3) (5)

a. a second hydropulper, or

b. a blend tank that is in fluid communication directly or indirectly with a refiner, or

c. to a blend tank that is downstream of a refiner, or

d. to a machine chest, or

e. to a combination of two or more of (a)-(d).

11. The process of claim 10, wherein the waste/recycle composition is combined with a mixture in a blend tank (b) or (c), wherein said mixture comprises fibrillated cellulose fibers and CE staple fiber. (0)

12. The process of claim 10, wherein the agitation occurs in a hydropulper that has a capacity of 20,000 to 80,000 gallons, and an L/D from 0.5:1 to 10:1. (0)

13. The process of claim 10, wherein the hydropulper is operated without applied thermal energy. (0)

14. The process of claim 8, wherein the CE staple fibers comprise non-round, crimped, cellulose ester (CE) staple fibers having a denier per filament (DPF) of less than 3, an average length of less than 6 mm. (0)

15. The process of claim 8, wherein the waste/recycle composition is in a hydropulper, and its consistency in the hydropulper or as an effluent from the hydropulper is not more than 20 wt. %. (3) (0)

19. The process of claim 8, wherein the waste/recycle composition is combined with additives comprising fillers, internal sizing agents, biocides, process anti-foaming agents, colorants, wet or dry strength polymers, retention aids, drainage aids, or optical modifiers, or a combination thereof. (0)

20. The process of claim 8, wherein the CE staple fibers comprise non-round, crimped, cellulose ester (CE) staple fibers having a DPF of less than 3, and an average length of less than 6 mm. (0)

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Application US20200063347

WASTE RECYCLE COMPOSITION

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