Degradable materials and packaging made from same

Patent metadata

Field	Value
Publication number	US-12434891-B2
Application number	US-202318538475-A
Country	US
Kind code	B2
Filing date	Dec 13, 2023
Priority date	Oct 3, 2014
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A water-soluble film, comprising a first water-soluble film, wherein the first water soluble film disintegrates in water within less than about 24 hours and dissolves in water within less than about 48 hours as measured by the MSTM-205 at 20° C. The disclosure provides a water-soluble film comprising a first water-soluble film that disintegrates in water within less than 24 hours and dissolves in water within less than 48 hours as measured by MSTM-205 at 20° C. The first water-soluble film optionally may be further characterized in that it does not disintegrate in water for at least about 1 hour and does not dissolve in water for at least about 1 hour as measured by MSTM-205 at 20° C. The disclosure further provides a water-soluble film comprising a first water-soluble film characterized in that the degradation and/or dissolution of the first water-soluble film is adapted to be activated by consumer handling.

First claim

What is claimed:

1. A degradable packet for enclosing a composition, the degradable packet comprising:
a first panel defined by at least a first edge, the first panel having an inner surface and an outer surface opposite the inner surface; and
a second panel defined by at least a first edge, the second panel having an inner surface and an outer surface opposite the inner surface, wherein the inner surface of the first panel is disposed between the outer surface of the first panel and the inner surface of the second panel, and wherein the inner surface of the second panel is disposed between the outer surface of the second panel and the inner surface of the first panel,
wherein at least a portion of the first panel is sealingly coupled to a portion of the second panel to define a sealed enclosure between the inner surface of the first panel and the inner surface of the second panel, wherein the sealed enclosure receives the composition,
wherein the first panel comprises a water-soluble film, wherein the water-soluble film disintegrates in water within less than about 24 hours and dissolves in water within less than about 48 hours, as measured according to MSTM-205 at 20° C.,
wherein the second panel comprises a water-soluble film, wherein the water-soluble film disintegrates in water within less than about 24 hours and dissolves in water within less than about 48 hours as measured according to MSTM-205 at 20° C.; and
wherein the water-soluble film of the first panel and/or the water-soluble film of second panel does not disintegrate in water for at least about 1 hour and does not dissolve in water for at least about 1 hour, as measured according to MSTM-205 at 20° C.

2. The degradable packet of claim 1 , wherein the water-soluble film of the first panel and/or the water-soluble film of the second panel is characterized in that the degradation or dissolution of the film is adapted to be activated by consumer handling.

3. The degradable packet of claim 1 , wherein the water-soluble film of the first panel and/or the water-soluble film of the second panel comprises a water soluble film-forming resin selected from the group consisting of polyvinyl alcohol, modified polyvinyl alcohols, polyacrylates, water-soluble acrylate copolymers, polyaminopropyl sulfonic acid and salts thereof, polyitaconic acid and salts thereof, polyacryamides, polyvinyl pyrrolidone, pullulan, cellulosics, guar gum, xanthan gum, carrageenan, starch, modified starches, poly (sodium acrylamido-2-methylpropane sulfonate), polymonomethylmaleate and salts thereof, copolymers of the foregoing, and combinations of any of the foregoing.

4. The degradable packet of claim 1 , wherein the water-soluble film of the first panel and/or the water-soluble film of the second panel further comprises an additional component selected from the group consisting of plasticizers, surfactants, emulsifiers, fillers, extenders, antiblocking agents, detackifying agents, antifoams, film formers, and combinations of the foregoing.

5. The degradable packet of claim 1 , wherein the water-soluble film of the first panel and/or the water-soluble film of the second panel further comprises a degradation accelerator.

6. The degradable packet of claim 5 , wherein the degradation accelerator is encapsulated.

7. The degradable packet of claim 6 , wherein the degradation accelerator is dispersed within the water-soluble film.

8. The degradable packet of claim 6 , wherein at least one side of the water-soluble film of the first panel and/or at least one side of the water-soluble film of the second panel is coated with a second water-soluble film.

9. The degradable packet of claim 8 , wherein the second water-soluble film of the first panel and/or the second water-soluble film of the second panel disintegrates in water within at most about 90 seconds and dissolves in water within at most about 120 seconds as measured by MSTM-205.

10. The degradable packet of claim 5 , wherein the degradation accelerator of the water-soluble film of the first panel and/or the degradation accelerator of the water-soluble film of the second panel is provided on at least one side of the water-soluble film.

11. The degradable packet of claim 10 , wherein the water-soluble film of the first panel and/or the water-soluble film of the second panel further comprises a layer of a second water-soluble film provided over the degradation accelerator, such that the degradation accelerator is provided between the water-soluble film and the second water-soluble film.

12. The degradable packet of claim 5 , wherein the degradation accelerator of the water-soluble film of the first panel and/or the degradation accelerator of the water-soluble film of the second panel is selected from the group consisting of a chemical degradation accelerator, heat forming agent, enzyme, UV degradation accelerator, oxidative degradation accelerator, microorganism, humidity degradation accelerator, and combinations of the foregoing.

13. The degradable packet of claim 1 , wherein the water-soluble film of the first panel and/or the water-soluble film of the second panel further comprises an agent for delayed degradation.

14. The degradable packet of claim 13 , wherein the agent for delayed degradation of the water-soluble film of the first panel and/or the agent for delayed degradation of the water-soluble film of the second panel is selected from the group consisting of an antioxidant, UV absorber, light stabilizer, and combinations of the foregoing.

15. The degradable packet of claim 1 , wherein a printed material is provided on the water-soluble film of the first panel and/or the water-soluble film of the second panel, as determined by the opacity test.

16. The degradable packet of claim 15 , wherein the printed material is characterized in that it has reduced visibility after about 1 month of exposure to sunlight.

17. The degradable packet of claim 15 , wherein the printed material comprises a degradation accelerator.

18. The degradable packet of claim 1 , wherein the water-soluble film of the first panel and/or the water-soluble film of the second panel has a tensile strength of at least 20 N, as determined according to the ASTM D882 test method.

19. A degradable packet for enclosing a composition, the degradable packet comprising:
a first panel defined by at least a first edge, the first panel having an inner surface and an outer surface opposite the inner surface; and
a second panel defined by at least a first edge, the second panel having an inner surface and an outer surface opposite the inner surface, wherein the inner surface of the first panel is disposed between the outer surface of the first panel and the inner surface of the second panel, and wherein the inner surface of the second panel is disposed between the outer surface of the second panel and the inner surface of the first panel,
wherein at least a portion of the first panel is sealingly coupled to a portion of the second panel to define a sealed enclosure between the inner surface of the first panel and the inner surface of the second panel, wherein the sealed enclosure receives the composition,
wherein the first panel comprises a first laminate, and
wherein the second panel comprises a second laminate,
wherein the first and second laminates independently comprise a water-soluble film and a water-insoluble film, wherein the water-soluble film disintegrates in water within less than about 24 hours and dissolves in water within less than about 48 hours as measured according to the MSTM-205 at 20° C.

Assignees

• Monosol Llc

Inventors

• Lee David M
• Childers Jennifer L
• Yeung Lee K
• Jenke Ken
• Knight Jonathon
• Zeese Nicholas
• Bening P Scott
• Parulekar Yashodhan S
• Kumar Sumeet

Classifications

• C08K9/10

  Encapsulated ingredients · CPC title

• C08K5/005

  Stabilisers against oxidation, heat, light, ozone · CPC title

• C08K5/0033

  Additives activating the degradation of the macromolecular compound · CPC title

• C08J2300/14

  Water soluble or water swellable polymers, e.g. aqueous gels · CPC title

• B65D75/30

  Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding · CPC title