Odor-managed ostomy film

Patent metadata

Field	Value
Publication number	US-11400692-B2
Application number	US-201917270554-A
Country	US
Kind code	B2
Filing date	Aug 23, 2019
Priority date	Aug 31, 2018
Publication date	Aug 2, 2022
Grant date	Aug 2, 2022

Abstract

The present disclosure provides a film. In an embodiment, a multilayer film is provided and includes (A) a seal layer, (B) a barrier layer, and (C) an odor control layer. The odor control layer includes an odor control composition containing (A) from 85 wt % to 99.5 wt % of an olefin-based polymer and (B) from 15 wt % to 0.5 wt % of an odor suppressant. The odor suppressant includes a blend of: (i) an ionomer, (ii) particles of zinc oxide, and (iii) particles of copper oxide. The composition has a methyl mercaptan odor suppression value of greater than 45% as measured in accordance with ASTM D5504-12.

First claim

The invention claimed is:

1. A multilayer film comprising:
(A) a seal layer;
(B) a barrier layer; and
(C) an odor control layer, comprising a composition, the composition comprising:
(A) from 85 wt % to 99.5 wt % of at least one olefin-based polymer;
(B) from 15 wt % to 0.5 wt % of an odor suppressant comprising a blend of:
(i) an ionomer;
(ii) particles of zinc oxide; and
(iii) particles of copper oxide;

wherein the composition has a methyl mercaptan odor suppression value of greater than 45% as measured in accordance with ASTM D5504-12.

2. The multilayer film of claim 1 , wherein the barrier layer is between the seal layer and the odor control layer.

3. The multilayer film of claim 2 , wherein the seal layer is an innermost layer.

4. The multilayer film of claim 3 , wherein the odor control layer comprises a tie material.

5. The multilayer film of claim 3 , wherein the seal layer is composed of a polymeric material selected from the group consisting of an ethylene-based polymer, a propylene-based polymer, ethylene vinyl acetate (EVA), ethylene methyl acrylate (EMA), ethylene n-butyl acetate (EnBA), ethylene ethyl acrylate copolymer (EEA), polyolefin plastomer (POP), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), metallocene linear low density polyethylene (mLLDPE), styrene-ethylene-propylene-styrene (SEPS) rubber, styrene-isoprene block copolymer (SIS) and combinations thereof.

6. The multilayer film of claim 1 , wherein the barrier layer is composed of a polymeric material selected from the group consisting of ethylene/vinyl alcohol copolymer, polyvinylidene dichloride, vinylidene chloride copolymer, amorphous nylon, polyester, polyester copolymer, glycol-modified polyester (PETG), amorphous polyester copolymer, polyethylene terephthalate, amorphous polyethylene terephthalate, vinylidene chloride and methyl acrylate copolymer, vinylidene chloride and methyl methacrylate copolymer, polyamide, and combinations thereof.

7. The multilayer film of claim 1 , wherein the olefin-based polymer in the odor control layer is an ethylene-based polymer.

8. The multilayer film of claim 2 comprising a tie layer between the seal layer and the barrier layer.

9. The multilayer film of claim 1 , further comprising a skin layer.

10. The multilayer film of claim 1 , wherein the odor control layer is a skin layer.

11. The multilayer film of claim 1 , wherein the ionomer comprises an ethylene/methacrylic acid copolymer.

12. The multilayer film of claim 1 , wherein the ionomer is a zinc ionomer.

13. The multilayer film of claim 1 , wherein the particles of copper oxide are selected from the group consisting of (i) copper (I) oxide (Cu 2 O), (ii) copper (II) oxide (CuO), and (iii) combinations thereof.

14. The multilayer film of claim 12 , wherein the weight percent ratio between the zinc ionomer (Bi), the zinc oxide (Bii), and the copper oxide (Biii) is from 150:100:1 to 2.9:2.5:1.

15. An ostomy bag comprising:
a first multilayer film and a second multilayer film, wherein each multilayer film comprises:

(A) a seal layer;
(B) a barrier layer; and
(C) an odor control layer, comprising a composition, the composition comprising:
(A) from 85 wt % to 99.5 wt % of an olefin-based polymer;
(B) from 15 wt % to 0.5 wt % of an odor suppressant comprising a blend of:
(i) an ionomer;
(ii) particles of zinc oxide; and
(iii) particles of copper oxide;

wherein the composition has a methyl mercaptan odor suppression value of greater than 45% as measured in accordance with ASTM D5504-12;
the first multilayer film and the second multilayer film arranged such that the seal layers oppose each other and the second multilayer film is superimposed on the first multilayer film to form a common peripheral edge;
the first multilayer film and the second multilayer film sealed along the common peripheral edge;
the first multilayer film comprising a first opening; and
a ring adhered to the first opening.

Assignees

• Dow Global Technologies Llc

Inventors

• Bonekamp Jeffrey E
• Wevers Ronald
• Matteucci Scott T
• Krasovskiy Arkady L
• Sun Kefu
• Lu Keran

Classifications

• B32B27/08 Primary

  of synthetic resin · CPC title

• B32B27/18

  characterised by the use of special additives · CPC title

• B32B27/34

  comprising polyamides · CPC title

• B32B27/308

  comprising acrylic (co)polymers · CPC title

• B32B27/36

  comprising polyesters · CPC title