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Method for preparing a water-soluble container with two compartments

A water-soluble, water-soluble film technology, applied in containers with multiple items, chemical instruments and methods, containers, etc., can solve problems such as complex operation

Inactive Publication Date: 2009-09-30
RECKITT BENCKISER (UK) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the described method for preparing the containers requires a folding operation, which is too complex to operate on a fast-moving production line
Similarly, the container of WO 02 / 085738 is not always satisfactory since one chamber always has to be significantly smaller than the other

Method used

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  • Method for preparing a water-soluble container with two compartments
  • Method for preparing a water-soluble container with two compartments
  • Method for preparing a water-soluble container with two compartments

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Embodiment Construction

[0019] The method of the present invention enables the manufacture of water soluble containers in a single molding operation, thereby providing an overall simplification of the manufacturing process. The container may have a particularly attractive appearance, since the container contains two compositions, which may be the same or different, and the two compositions are held in fixed positions relative to each other. The compositions can be easily differentiated to emphasize their differences. For example, the compositions can have a different physical appearance, or can have a different color. They may also have different physical forms. For example, one composition may be a liquid and the other a powder.

[0020] The first water soluble film, second water soluble film and third water soluble film may be the same or different and typically contain a water soluble polymer (this term is used to include water dispersibility). Examples of water-soluble polymers are polyvinyl a...

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Abstract

A process for preparing a water-soluble container comprising at least two compartments which comprises: a. forming a first pocket in a first water-soluble film by thermoforming or vacuum forming the first water-soluble film in a mould; b. filling the first pocket with a first composition; c. closing the first pocket with a second water-soluble film to produce an intermediate container; d. moving the intermediate container by deforming the mould to provide a second pocket; e. filling the second pocket with a second composition; and f. closing the second pocket with a third water-soluble film.

Description

technical field [0001] The present invention relates to a method of making a water soluble container having at least two chambers. Background technique [0002] It is known to package chemical compositions, especially those which are hazardous or irritating, into films, especially water soluble films. To dissolve or disperse the contents of the container into water, simply add the container to the water. Examples of such containers are disclosed in WO 89 / 12587 and WO 92 / 17382. [0003] However, said container has many troubles. Especially since these containers have only one chamber, these containers cannot easily contain two or more compositions. Thus, unless special precautions are taken, the container cannot contain two mutually incompatible compositions, or a composition that is incompatible with one of the films or sheets used to package the compositions. [0004] Water soluble containers having at least two chambers are also known. For example WO 02 / 085736 describ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65B9/04B65B47/10B65B47/02B65B5/10B65D65/46B65B29/10B65D81/32
CPCB65D65/46B65B9/042C11D17/042B65D81/3261B65B29/10B65B2230/02
Inventor 拉尔夫·维德曼若尔迪·萨尔瓦多弗兰切斯克·阿亚茨弗雷德里克·莫勒
Owner RECKITT BENCKISER (UK) LTD