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Method of encapsulation

a gelatin capsule and encapsulation technology, applied in the field of encapsulation, can solve the problem of very limited sales of gelatin capsules

Inactive Publication Date: 2002-03-07
BIOPROGRESS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0011] It is preferred to use film material that becomes more flexible when in partially solvated conditions as this assists capsule formation. PVA has this property.

Problems solved by technology

As a result, the sales of such gelatin capsules are very limited among such individuals.

Method used

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  • Method of encapsulation

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example

[0040] Using the apparatus of FIG. 1 encapsulation of a typical bath oil cosmetic product was carried out using Hi-Selon cold water soluble plasticised polyvinyl alcohol (B9) film, 80 micron thick, with partial solvation carried out by application of water. This resulted in production of good quality capsules, suitable for cosmetic use.

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Abstract

A method of encapsulation is characterized by supplying to an encapsulation unit (22) two films (14, 16) of like material capable of deforming elastically at least when partially solvated, and applying solvent to at least one of the films prior to encapsulation to cause partial solvation of the material surface, such that the partially solvated surface can adhere to and seal with the film material. In the encapsulation unit, the substance to be encapsulated e.g. a cosmetic oil or vitamin preparation is supplied between the films, the films are formed, typically by a molding process, into suitably shaped capsule portions which can adhere to each other as a result of the adhesive action of the partially solvated surface(s), and which seal together encapsulating the supplied substance, forming a capsule. The invention enables encapsulation using materials other than gelatin, such as polyvinyl alcohol. Also disclosed is encapsulation apparatus and the resulting capsules.

Description

[0001] This invention concerns encapsulation and relates to a method of encapsulation, encapsulation apparatus and the resulting capsules.BACKGROUND TO THE INVENTION[0002] The provision of water soluble and digestible capsules containing pharmaceutical or cosmetic preparations is well established. Typically oils are encapsulated in gelatin shells designed to release their contents when subjected to immersion in water or exposure to digestive juices. These oils include dietary enhancement substances or, in the case of cosmetic preparations, fragrant oils for release into bath water. A substantial industry has been built up around this principle, based primarily on the use of gelatin for the capsule shells. This gelatin is derived from the bones and skins of animals.[0003] With concern for the environment and animal welfare and fear of animal related diseases such as Bovine Spongiform Encephalopathy (BSE) increasing, the number of individuals adopting a serious stance on the use of an...

Claims

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Application Information

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IPC IPC(8): A61J3/07B65B11/50A61K9/48C08J5/12
CPCA61J3/07A61K8/11A61K8/8129A61K9/4816A61Q19/10C08J5/122
Inventor BROWN, MALCOLM DAVID
Owner BIOPROGRESS TECH
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