Wipe and methods for manufacturing and using a wipe
A wipe is provided including a nonwoven substrate and an active agent containing composition. The nonwoven substrate includes a mixture of natural fiber and polylactide fiber. The nonwoven substrate can contain about 0.5 wt. % to about 75 wt. % of the polylactide fiber and about 10 wt. % to about 95 wt. % of the natural fiber. The nonwoven substrate can have a basis weight of about 10 lb/3000 ft 2 to about 50 lb/3000 ft 2 . The wipe can contain the active agent containing composition in an amount of about 0.5 lb/3000 ft 2 to about 300 lb/3000 ft 2 . The wipe can be provided so that it satisfies the definition for biodegradability according to ASTM D 6868-03. A method for manufacturing a wipe is provided.
1 . A wipe comprising:
(a) a nonwoven substrate comprising a mixture of natural fiber and polylactide fiber the mixture, comprising about 0.5 wt. % to about 75 wt. % of the polylactide fiber and about 10 wt. % to about 95 wt. % of the natural fiber, and having a basis weight of about 10 lb/3000 ft 2 to about 50 lb/3000 ft 2 ; and
(b) an active agent containing composition in an amount of about 0.5 lb/3000 ft 2 to about 300 lb/3000 ft 2 .
2 . A wipe according to claim 1 , wherein the natural fiber comprises wood fiber.
3 . A wipe according to claim 2 , wherein the wood fiber comprises a blend of hardwood fibers and soft wood fibers.
4 . A wipe according to claim 1 , wherein the natural fiber comprises non-wood fiber.
5 . A wipe according to claim 4 , wherein the non-wood fiber comprises at least one of vegetable fiber, cotton, straw, cane, grass, hemp, silk, corn stalk, abaca, or mixture thereof.
6 . A wipe according to claim 1 , wherein the mixture comprises about 10 wt. % to about 55 wt. % polylactide fiber and about 40 wt. % to about 90 wt. % natural fiber.
7 . A wipe according to claim 1 , wherein the active agent containing composition is loaded onto the nonwoven substrate in an amount of about 30 lb/3000 ft 2 to about 150 lb/3000 ft 2 .
8 . A wipe according to claim 1 , wherein the nonwoven substrate has a basis weight of about 20 lb/3000 ft 2 to about 40 lb/3000 ft 2 .
9 . A wipe according to claim 1 , wherein the nonwoven substrate contains about 0.1 wt. % to about 8 wt. % wet strength additive.
10 . A wipe according to claim 9 , wherein the wet strength additive comprises urea formaldehyde resin, melamine formaldehyde resin, polyamides, polyacrylamides, polyimines, polyethyleneimines, and latexes.
11 . A wipe according to claim 1 , wherein the nonwoven substrate comprises about 0.5 wt. % to about 25 wt. % binder.
12 . A wipe according to claim 1 , wherein the fibers are bound by entanglement, melting or softening of the polylactide fiber, or a combination thereof.
13 . A wipe according to claim 1 , wherein the active agent containing composition comprises about 0.001 wt. % to about 2 wt. % surfactant.
14 . A wipe according to claim 1 , wherein the active agent containing composition comprises about 0.001 wt. % to about 10 wt. % organic solvent.
15 . A wipe according to claim 1 , wherein the active agent containing composition comprises about 5 wt. % to about 90 wt. % water.
16 . A wipe according to claim 1 , wherein the active agent containing composition comprises about 0.1 wt. % to about 1 wt. % pine oil, terpene oil, or essential oil.
17 . A wipe according to claim 1 , wherein the wipe comprises a preservative, an antimicrobial agent, a builder, or a buffer.
18 . A wipe according to claim 1 , wherein the nonwoven substrate comprises a creped substrate.
19 . A wipe according to claim 1 , wherein the wipe is biodegradable according to ASTM D 6868-03.
20 . A method for manufacturing a wipe comprising:
(a) forming a nonwoven substrate from a mixture of natural fiber and polylactide fiber by a wet laid process and having a basis weight of about 10 lb/3000 ft 2 to about 50 lb/3000 ft 2 , wherein the mixture comprises about 0.5 wt. % to about 75 wt. % of the polylactide fiber and about 10 wt. % to about 95 wt. % of the natural fiber; and
(b) loading an active agent containing composition onto the nonwoven substrate in an amount of about 0.5 lb/3000 ft 2 to about 300 lb/3000 ft 2 to form the wipe.
21 . A method according to claim 20 , wherein the natural fiber comprises wood fiber.
22 . A method according to claim 21 , wherein the wood fiber comprises a blend of hardwood fibers and soft wood fibers.
23 . A method according to claim 20 , wherein the active agent is loaded onto the nonwoven substrate in an amount of about 30 lb/3000 ft 2 to about 150 lb/3000 ft 2 .
24 . A method according to claim 20 , wherein the nonwoven substrate has a basis weight of about 20 lb/3000 ft 2 to about 40 lb/3000 ft 2 .
25 . A method according to claim 20 , wherein the nonwoven substrate contains about 0.1 wt. % to about 8 wt. % wet strength additive.
26 . A method according to claim 25 , wherein the wet strength additive comprises urea formaldehyde resin, melamine formaldehyde resin, polyamides, polyacrylamides, polyimines, polyethyleneimines, and latexes.
27 . A method according to claim 20 , wherein the nonwoven substrate comprises about 0.5 wt. % to about 25 wt. % binder.
28 . A method according to claim 20 , wherein the fibers are bound by entanglement, melting or softening of the polylactide fiber, or a combination thereof.
29 . A method according to claim 20 , wherein the active agent containing composition comprises about 0.001 wt. % to about 2 wt. % surfactant.
30 . A method according to claim 20 , wherein the active agent containing composition comprises about 0.001 wt. % to about 10 wt. % organic solvent.
31 . A method according to claim 20 , wherein the active agent containing composition comprises about 5 wt. % to about 90 wt. % water.
32 . A method according to claim 20 , wherein the active agent containing composition comprises about 0.1 wt. % to about 1 wt. % pine oil, terpene oil, or essential oil.
33 . A method according to claim 20 , further comprising creping the nonwoven substrate.
34 . A method according to claim 20 , wherein the wipe is biodegradable according to ASTM D 6868-03.