Films including a water-soluble layer and a vapor-deposited inorganic coating

Patent metadata

Field	Value
Publication number	US-10450119-B2
Application number	US-201816015270-A
Country	US
Kind code	B2
Filing date	Jun 22, 2018
Priority date	Jun 22, 2017
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

Films including a water-soluble layer and a vapor-deposited inorganic coating are disclosed. The films exhibit enhanced barrier properties.

First claim

What is claimed is:

1. A film comprising:
a layer of water-soluble polymeric material; and
a vapor-deposited inorganic coating disposed on a surface of the layer, wherein the inorganic coating comprises a metal oxide,
wherein the inorganic coating comprises a plurality of microfractures therein, wherein the microfractures define a plurality of discrete regions and each of the discrete regions has a maximum linear dimension of about 150 microns or less,
wherein the plurality of microfractures enable the dissolution of the water-soluble polymeric material.

2. The film of claim 1 , wherein the water-soluble polymeric material comprises polyvinyl alcohol.

3. The film of claim 1 , wherein the inorganic coating consists of the metal oxide.

4. The film of claim 1 , wherein the metal oxide comprises one or more of aluminum oxide, silicon oxide, magnesium oxide, and titanium oxide.

5. The film of claim 1 , wherein the inorganic coating is directly attached to the surface of the layer.

6. The film of claim 1 , wherein the surface of the layer is at least partially ablated.

7. The film of claim 6 , wherein the surface of the layer is ablated by a helium-oxygen plasma.

8. The film of claim 6 , wherein the surface of the layer is ablated by an argon-oxygen plasma.

9. The film of claim 1 , wherein each of the microfractures has an overall length of from about 5 to about 50 microns.

10. The film of claim 1 , wherein each of the microfractures has an overall width of about 1 micron or less.

11. The film of claim 1 , wherein each of the microfractures extends entirely through the inorganic coating.

12. The film of claim 1 , wherein each of the microfractures extends only partially through the inorganic coating.

13. The film of claim 1 , wherein each of the discrete regions has maximum linear dimension of about 100 microns or less.

14. The film of claim 13 , wherein each of the discrete regions has maximum linear dimension of about 35 microns or less.

15. An article comprising a film according to claim 1 , wherein the film forms at least part of packaging for the article.

16. The article of claim 15 , wherein the article is a soluble unit dose article.

17. The film of claim 1 , the discrete regions are substantially uniform in size and shape.

18. The film of claim 17 , wherein the shape is substantially rectangular or square.

Assignees

• Procter & Gamble

Inventors

• Boswell Emily Charlotte
• Mirle Srinivas Krishnaswamy
• Shanov Vesselin Nikolov
• Malik Rachit
• Mcconnell Colin William

Classifications

• C23C16/513

  using plasma jets · CPC title

• C23C16/01

  on temporary substrates, e.g. substrates subsequently removed by etching · CPC title

• C23C14/0005

  Separation of the coating from the substrate · CPC title

• C08J7/06

  with compositions not containing macromolecular substances · CPC title

• Y10T428/1341

  Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit · CPC title