EP0046021A1
Expired / Lapsed
EP
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Sachets and methods for their production
Assignee: Imperial Chemical Industries Ltd
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Filing: 1981-07-22
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Granted: —
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Expires: 2001-07-22
Abstract
Abstract A sachet which comprises a sealed bag containing a compressible and porous carrier (10) which is held under compression within the sachet by pressure exerted by the walls of the sachet onto the carrier, the carrier being thoroughly impregnated with liquid suitably an antiseptic. Methods are provided for manufacture of the sachets. The carriers in such sachets containing antiseptic liquid have reduced tendency to harbour bacteria, and are preferably open or reticulated cell foam sponges.
Inventors
- 👤 Roy Fred Gray
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 12:56
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/28; B65D75/30; B65D75/32; A; A61; A61F; A61F15/00; A61F15/001; B65B; B65B9/00; B65B9/02; B65B9/04; B65B9/042
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
41 words
A sachet which comprises a sealed bag containing a compressible and porous carrier which is held under compression within the sachet by pressure exerted by the walls of the sachet onto the carrier, the carrier being thoroughly impregnated with a liquid.
Claim 2
Dependent Claim
41 words
A sachet which comprises a sealed bag containing a compressible and porous carrier which is held under compression within the sachet by pressure exerted by the walls of the sachet onto the carrier, the carrier being thoroughly impregnated with a liquid.
Claim 3
Dependent Claim
20 words
A sachet as claimed in claim 1 in which one of the walls of the sachet comprises a preformed pocket.
Claim 4
Dependent Claim
25 words
A sachet as claimed in either claim 1 or claim 2 in which at least one of the walls are formed from a laminate film.
Claim 5
Dependent Claim
22 words
A sachet as claimed in claim 3 in which the walls are formed from a laminate of low density polyethylene and nylon.
Claim 6
Dependent Claim
24 words
A sachet as claimed in any of claims 1 to 4 in which the carrier is a foam sponge having reticulated or open cells.
Claim 7
Dependent Claim
18 words
A sachet as claimed in any of claims 1 to 5 in which the liquid is an antiseptic.
Claim 8
Independent Claim
100 words
A method for making a sachet comprises forming a dish-like pocket in a sheet of film or foil, placing a suitable amount of liquid into the pocket, placing a piece of carrier having base area smaller than the base area of the pocket into the pocket;, placing a second film or foil over the pocket which contains the liquid and piece of carrier to form an assembly, evacuating the pocket and around the assembly below atmospheric pressure, sealing the second film or foil around the edge of the pocket to form a sachet, and releasing the vacuum around the sachet.
Claim 9
Independent Claim
100 words
A method for making a sachet comprises forming a dish-like pocket in a sheet of film or foil, placing a suitable amount of liquid into the pocket, placing a piece of carrier having base area smaller than the base area of the pocket into the pocket;, placing a second film or foil over the pocket which contains the liquid and piece of carrier to form an assembly, evacuating the pocket and around the assembly below atmospheric pressure, sealing the second film or foil around the edge of the pocket to form a sachet, and releasing the vacuum around the sachet.
Claim 10
Dependent Claim
84 words
A method as claimed in claim 7 which is an essentially continuous process comprising forming pockets from a continuous web of film or foil, placing measured amounts of liquid and carriers into the pockets at stations along the web as the web passes those stations, placing a second web of film or foil over the web containing the pockets to form a local assembly, evacuating the assembly, forming,a sachet by sealing the two webs around the pocket, releasing the vacuum and separating the sachets.
Claim 11
Dependent Claim
38 words
A process as claimed in either claim 7 or claim 8 in which the carrier has height greater than the depth of the pocket and is partially compressed before forming the sachet by pressure applied onto the carrier.
Claim 12
Independent Claim
21 words
A method as claimed in any one of claims 7, 8 or 9 in which the sealing is achieved by heat.
Claim 13
Dependent Claim
15 words
A sachet produced by the method claimed in any one of claims 7 to 10.
References Cited (Backward Citations)
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