CA2251839A1 - A heat pack - Google Patents
A heat packInfo
- Publication number
- CA2251839A1 CA2251839A1 CA002251839A CA2251839A CA2251839A1 CA 2251839 A1 CA2251839 A1 CA 2251839A1 CA 002251839 A CA002251839 A CA 002251839A CA 2251839 A CA2251839 A CA 2251839A CA 2251839 A1 CA2251839 A1 CA 2251839A1
- Authority
- CA
- Canada
- Prior art keywords
- liquid
- pack
- sealed
- water
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
A heat pack capable of being heated to at least 55 °C is provided and comprises a flexible impervious outer container capable of being sealed to retain a liquid such as water therein and of maintaining its sealed integrity when heated to at least the aforesaid temperature.
A porous, non-rigid filling material, which can absorb at least its own weight of the liquid, is located in the container. Advantageously, the pack contains a weight of liquid in the range 250 g to 1250 g, which liquid comprises water or compounds comprising one or more hydroxyl groups, or a mixture of water and such hydroxyl group compounds. In order to prevent microbial growth within the liquid-filled, sealed container, a predetermined quantity of a preservative at an appropriate concentration is also added to the fill. The filling material is preferably either fibrous or spongy in nature and advantageously may comprise a textile material or paper which is either recycled or would otherwise be treated as scrap or waste. Preferably also, air is removed from the outer container prior to it being sealed. The pack is also capable of use as a negative heat pack, i.e. a cool pack.
A porous, non-rigid filling material, which can absorb at least its own weight of the liquid, is located in the container. Advantageously, the pack contains a weight of liquid in the range 250 g to 1250 g, which liquid comprises water or compounds comprising one or more hydroxyl groups, or a mixture of water and such hydroxyl group compounds. In order to prevent microbial growth within the liquid-filled, sealed container, a predetermined quantity of a preservative at an appropriate concentration is also added to the fill. The filling material is preferably either fibrous or spongy in nature and advantageously may comprise a textile material or paper which is either recycled or would otherwise be treated as scrap or waste. Preferably also, air is removed from the outer container prior to it being sealed. The pack is also capable of use as a negative heat pack, i.e. a cool pack.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9609300.0 | 1996-05-03 | ||
| GBGB9609300.0A GB9609300D0 (en) | 1996-05-03 | 1996-05-03 | A heat pack |
| PCT/GB1997/001118 WO1997041814A1 (en) | 1996-05-03 | 1997-04-23 | A heat pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2251839A1 true CA2251839A1 (en) | 1997-11-13 |
| CA2251839C CA2251839C (en) | 2006-03-14 |
Family
ID=36095820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002251839A Expired - Fee Related CA2251839C (en) | 1996-05-03 | 1997-04-23 | A heat pack |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2251839C (en) |
-
1997
- 1997-04-23 CA CA002251839A patent/CA2251839C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2251839C (en) | 2006-03-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20140423 |