Process for making unitized dose pouches with modifications at a seal region

Patent metadata

Field	Value
Publication number	US-10294445-B2
Application number	US-201615254152-A
Country	US
Kind code	B2
Filing date	Sep 1, 2016
Priority date	Sep 1, 2016
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

Processes for making unitized dose pouches that have improved water solubility due to modifications at a seal region of the pouch, such as perforations. Unitized dose pouches having modifications at a seal region. Process of treating a fabric.

First claim

What is claimed is:

1. A process for making unitized dose pouches having improved water solubility, the process comprising the steps of:
providing a web comprising at least a first water-soluble film and a second water-soluble film,
the first and second water-soluble films being joined at seal regions,
where the first film, the second film, and the seal regions define a plurality of sealed compartments,
the sealed compartments containing at least one composition;

providing a plurality of modifications solely to the seal region, the modifications comprising perforations; and
cutting the web along cut lines at the seal regions and separating the web along the cut lines to form a plurality of unitized dose pouches,
each pouch comprising at least one sealed compartment, a seal region, and modifications at the seal region of the pouch.

2. A process for making unitized dose pouches according to claim 1 , the process further comprising the steps of providing the first film, forming a plurality of cavities in the first film, providing a composition to the plurality of cavities, and joining the second film to the first film to provide the web.

3. A process for making unitized dose pouches according to claim 1 , wherein the at least one composition is a liquid or gel composition.

4. A process for making unitized dose pouches according to claim 1 , wherein the at least one composition comprises from about 5% to about 60%, by weight of the at least one composition, of surfactant.

5. A process for making unitized dose pouches according to claim 1 , wherein the plurality of sealed compartments comprise first compartments that contain a first composition, and wherein the plurality of sealed compartment further comprise second compartments that contain a second composition, where the second composition is different than the first composition.

6. A process for making unitized dose pouches according to claim 1 , wherein the perforations are made with a laser, with an ultra sound device, with a mechanical device, or combinations thereof.

7. A process for making unitized dose pouches according to claim 6 , wherein the perforations are made with a laser.

8. A process for making unitized dose pouches according to claim 1 , wherein the modifications are located at least 0.5 mm, on average, from a periphery of the sealed compartments.

9. A process for making unitized dose pouches according to claim 1 , wherein the modifications are located at least 0.1 mm apart, on average, from each other.

10. A process for making unitized dose pouches according to claim 1 , wherein the modifications are regularly spaced.

11. A process for making unitized dose pouches according to claim 1 , wherein the web further comprises a third water-soluble film.

Assignees

• Procter & Gamble

Inventors

• Brandt Sanz Miguel

Classifications

• C11D17/045

  Multi-compartment · CPC title

• C11D17/043

  Liquid or thixotropic (gel) compositions · CPC title

• B65B9/023

  Packaging fluent material (B65B9/04 takes precedence) · CPC title

• C11D17/00 Primary

  Detergent materials or soaps characterised by their shape or physical properties (shaping soap C11D13/14) · CPC title

• B65D65/46

  Applications of disintegrable, dissolvable or edible materials · CPC title