Dispenser and method of use thereof

Patent metadata

Field	Value
Publication number	US-12550895-B2
Application number	US-202519220988-A
Country	US
Kind code	B2
Filing date	May 28, 2025
Priority date	Jun 4, 2019
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A multi-layer article includes a non-active state and an active state. The multi-layer article includes an outer layer with a first side and a second side, and at least one inner layer that is disposed adjacent to at least a portion of the outer layer and that includes a volatile material therein. The at least one inner layer is coupled to the outer layer in both the active state and the non-active state. The multi-layer article is folded along an axis so that an upper portion of the multi-layer article is disposed on a lower portion of the multi-layer article. The outer layer is a non-porous, non-permeable material that includes an aperture.

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 having a first side and a second side; and at least one inner layer that is disposed adjacent to at least a portion of the outer layer and that includes a volatile material therein, the at least one inner layer being coupled to the outer layer in both the active state and the non-active state, wherein the multi-layer article is folded along an axis so that an upper portion of the multi-layer article is disposed on a lower portion of the multi-layer article, and wherein the outer layer is a non-porous, non-permeable material that includes an aperture.

2 . The multi-layer article of claim 1 , wherein the outer layer is made from a different material than the at least one inner layer.

3 . The multi-layer article of claim 2 , wherein the at least one inner layer is configured to achieve a delivery rate of the volatile material of between fifteen days and twenty-five days.

4 . The multi-layer article of claim 2 , wherein the at least one inner layer is permeable.

5 . The multi-layer article of claim 4 , wherein the volatile material comprises an active agent.

6 . The multi-layer article of claim 5 , wherein the volatile material further comprises a solvent.

7 . The multi-layer article of claim 6 , wherein the solvent is a di-propylene glycol dimethyl ether.

8 . The multi-layer article of claim 5 , wherein the active agent is transfluthrin.

9 . The multi-layer article of claim 8 , wherein the multi-layer article is initially dosed with between 1 mg and 5 g of transfluthrin.

10 . The multi-layer article of claim 1 further including a sealant layer that is configured to prevent emanation of the volatile material from the multi-layer article in the non-active state.

11 . 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; at least one inner layer that is disposed on top of at least a portion of the outer layer and that includes a volatile material therein in the non-active state, the at least one inner layer being coupled to the outer layer in both the active state and the non-active state; and a sealant layer that is configured to prevent emanation of the volatile material from the multi-layer article in the non-active state, wherein the multi-layer article is folded along an axis so that an upper portion of the multi-layer article is disposed on a lower portion of the multi-layer article, and wherein the outer layer is a non-porous, non-permeable material.

12 . The multi-layer article of claim 11 , wherein the inner layer is configured to achieve a delivery rate of the volatile material of between fifteen days and twenty-five days.

13 . The multi-layer article of claim 12 , wherein the upper portion and the lower portion are mirror images of each other.

14 . The multi-layer article of claim 12 , wherein the at least one inner layer is permeable.

15 . The multi-layer article of claim 11 , wherein the volatile material comprises an active agent.

16 . The multi-layer article of claim 15 , wherein the active agent is transfluthrin.

17 . The multi-layer article of claim 16 , wherein the multi-layer article is initially dosed with between 1 mg and 5 g of transfluthrin.

18 . The multi-layer article of claim 15 , wherein the volatile material further comprises a solvent.

19 . The multi-layer article of claim 18 , wherein the solvent is a di-propylene glycol dimethyl ether.

20 . The multi-layer article of claim 11 , wherein the at least one inner layer has a first side and a second side that define a thickness therebetween, and
wherein the volatile material is disposed between the first side and the second side of the at least one inner layer.

21 . 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; and at least one inner layer disposed on top of at least a portion of the outer layer and including a volatile material therein in a non-active state, the at least one inner layer being coupled to the outer layer in both the active state and the non-active state, wherein the outer layer and the at least one inner layer are folded along an axis so that an upper portion of the multi-layer article is disposed on a lower portion of the multi-layer article, wherein the outer layer comprises a high crystalline polymer structure, and wherein the inner layer is configured to achieve a delivery rate of the volatile material of between fifteen days and twenty-five days.

22 . The multi-layer article of claim 21 , wherein the inner layer is a different material than a high crystalline polymer structure.

23 . The multi-layer article of claim 22 further including a sealant layer that is configured to prevent emanation of the volatile material from the multi-layer article in the non-active state.

24 . The multi-layer article of claim 22 , wherein the at least one inner layer is permeable.

25 . The multi-layer article of claim 21 , wherein the volatile material comprises an active agent.

26 . The multi-layer article of claim 25 , wherein the active agent is transfluthrin.

27 . The multi-layer article of claim 26 , wherein the multi-layer article is initially dosed with between 1 mg and 5 g of transfluthrin.

28 . The multi-layer article of claim 21 , wherein the at least one inner layer has a first side and a second side that define a thickness therebetween, and
wherein the volatile material is disposed between the first side and the second side of the at least one inner layer.

29 . The multi-layer article of claim 25 , wherein the volatile material further comprises a solvent.

30 . The multi-layer article of claim 29 , wherein the solvent is a di-propylene glycol dimethyl ether.

Assignees

• Johnson & Son Inc S C

Inventors

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

Classifications

• B32B2250/24

  All layers being polymeric · CPC title

• B32B2250/05

  5 or more layers · CPC title

• B32B27/34

  comprising polyamides · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• B32B27/306

  comprising vinyl acetate or vinyl alcohol (co)polymers · CPC title