Dispenser and method of use thereof

Patent metadata

Field	Value
Publication number	US-11825837-B2
Application number	US-201916431598-A
Country	US
Kind code	B2
Filing date	Jun 4, 2019
Priority date	Jun 4, 2019
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

A multi-layer article including a first non-active state and a second active state, the multi-layer article comprising an outer layer having a first side and a second side, an inner layer adjacent to at least a portion of the outer layer and including a volatile material, and an upper layer including a first side and a second side, the first side of the upper layer being adjacent to at least a portion of the inner layer. The multi-layer article is folded upon itself in the first non-active state so that at least a first portion of the second side of the upper layer is disposed on a top of a second portion of the second side of the upper layer, and the first portion and the second portion of the upper layer are heat sealed in the non-active state.

First claim

We claim:

1. A multi-layer article including a non-active state and an active state, the multi-layer article comprising:
an outer layer formed from a high crystalline polymer structure, and having a first side and a second side;
an inner layer adjacent to at least a portion of the outer layer and including a material selected from the group consisting of a polyethylene, a polyvinyl alcohol, a polypropylene, an ethylene-vinyl acetate, a high-density polyethylene, and an ethylene vinyl alcohol, the inner layer being bonded to the outer layer in both the active state and the non-active state, wherein the inner layer includes a volatile material therein; and
an upper layer adjacent to at least a portion of the inner layer and including a material selected from the group consisting of an ethylene-vinyl acetate, a polyethylene, a polypropylene, an ethylene vinyl alcohol copolymer, a polyester, a nylon or polybutene, butylene copolymer, and/or combinations of these materials,
wherein the upper layer includes a first side and a second side opposite the first side, the first side of the upper layer being disposed atop at least a portion of the inner layer and the volatile material included therein,
wherein the multi-layer article is folded upon itself in the non-active state so that at least a first portion of the second side of the upper layer is disposed on a second portion of the second side of the upper layer, and
wherein the first portion and the second portion of the upper layer are heat-sealed in the non-active state.

2. The multi-layer article of claim 1 , wherein the outer layer is a high-density polyethylene film, the inner layer is a nylon-based film, and the upper layer is a blend of ethylene vinyl acetate with polyolefin film.

3. The multi-layer article of claim 2 , wherein the volatile material comprises an active agent and a solvent.

4. The multi-layer article of claim 3 , wherein the active agent is transfluthrin and the solvent is a di-propylene glycol dimethyl ether.

5. The multi-layer article of claim 4 , wherein the multi-layer article is initially dosed with about 110 mg of the active agent.

6. The multi-layer article of claim 5 , wherein when the multi-layer article is in the non-active state, the multi-layer article retains at least 90% of the initial dosage of the active agent after 30 days.

7. The multi-layer article of claim 6 , wherein when the multi-layer article is in the active state, the multi-layer article emanates the active agent at an emanation rate between about 2 mg/day and about 4 mg/day.

8. The multi-layer article of claim 7 , wherein the multi-layer article has a peel strength between about 2 N and about 50 N, the peel strength being an average load strength capable of separating a heat seal between the first and second portion of the upper layer.

9. A multi-layer article including a non-active state and an active state, the multi-layer article comprising:
an outer layer having a first side and a second side;
an inner layer adjacent to at least a portion of the outer layer and including a volatile material therein in both the active state and the non-active state, the inner layer being bonded to the outer layer in both the active state and the non-active state; and
an upper layer including a first side and a second side, the first side of the upper layer being positioned on an upper surface of at least a portion of the inner layer and the volatile material included therein,
wherein the volatile material includes a solvent and an active agent,
wherein the multi-layer article is folded upon itself in the non-active state so that at least a first portion of the second side of the upper layer is disposed on a top of a second portion of the second side of the upper layer, and
wherein the first portion and the second portion of the upper layer are heat-sealed in the non-active state.

10. A multi-layer article including a non-active state and an active state, the multi-layer article comprising:
an outer layer having a first side and a second side;
an inner layer adjacent to at least a portion of the outer layer and including a volatile material therein, the inner layer being bonded to the outer layer in both the active state and the non-active state; and
an upper layer including a first side and a second side, the first side of the upper layer being disposed on top of at least a portion of the inner layer and the volatile material therein;
wherein the volatile material includes an active agent,
wherein the multi-layer article is folded upon itself in the non-active state so that at least a first portion of the second side of the upper layer is disposed on a top of a second portion of the second side of the upper layer, and
wherein the first portion and the second portion of the upper layer are heat-sealed in the non-active state.

11. The multi-layer article of claim 9 , wherein the outer layer includes a high-density polyethylene.

12. The multi-layer article of claim 11 , wherein the inner layer includes a nylon.

13. The multi-layer article of claim 12 , wherein the upper layer is an ethylene vinyl acetate with polyolefin.

14. The multi-layer article of claim 13 , wherein the volatile material comprises the active agent and a solvent.

15. The multi-layer article of claim 14 , wherein the active agent is transfluthrin and the solvent is a di-propylene glycol dimethyl ether.

16. The multi-layer article of claim 14 , wherein the multi-layer article is initially dosed with about 110 mg of the active agent.

17. The multi-layer article of claim 16 , wherein when the multi-layer article is in the non-active state, the multi-layer article retains at least 90% of the initial dosage of the active agent after 60 days.

18. The multi-layer article of claim 17 , wherein when the multi-layer article is in the active state, the multi-layer article emanates the active agent at an emanation rate between about 2 mg/day and about 4 mg/day.

19. The multi-layer article of claim 9 , wherein the multi-layer article has a peel strength between about 2 N and about 50 N, the peel strength being an average load strength capable of separating a heat seal between the first and second portion of the upper layer.

20. The multi-layer article of claim 14 , wherein the active agent and the inner layer have a relative energy difference between 0.5 and 15.

21. The multi-layer article of claim 9 , the inner layer having a first side and a second side, wherein the volatile material is included between the first side and the second side of the inner layer.

Assignees

• Johnson & Son Inc S C

Inventors

• Nyambo Calistor
• Conklin Curtis
• O'Gara Caitlin Y
• Wang Jia
• Ulrich Todd

Classifications

• A01N25/34 Primary

  Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group · CPC title

• A01N53/00

  Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof · CPC title

• B29C48/0021

  combined with joining, lining or laminating · CPC title

• B29C48/08

  flexible, e.g. films · CPC title

• B29C48/21

  the layers being joined at their surfaces · CPC title