Dispensing – Collapsible wall-type container – Plural container and/or compartment
Patent
1993-01-12
1994-12-20
Kashnikow, Andres
Dispensing
Collapsible wall-type container
Plural container and/or compartment
222107, 222564, 383 38, 383210, 206484, 53410, 53451, B65D 7538, B65D 3022, B65B 902, B31B 4100
Patent
active
053739663
DESCRIPTION:
BRIEF SUMMARY
This invention relates to single use dispensing sachets, and also relates to a method of manufacturing the sachets.
Single use dispensing sachets are well known and are in extensive use. Typically, the known sachets comprise envelopes of plastics material made up of two sheets sealed together at the edges. Between the sheets is contained the sachet contents, usually being of a liquid or fluent pasty medium. Typically the contents may comprise shampoo, medication, soap, food pastes, sauces, creams and so on. In the sachets according to the present invention, the contents will be of a liquid or fluent nature which can be poured from the sachet including sauces, condiments, hair care products, cosmetics, DIY products, car care and health care products, but the actual contents material is not in essence to the present invention.
Also, although the sachets according to the present invention may principally be constructed of flexible plastics material, it is to be mentioned that other flexible sheet materials can be used such as metallic foils, laminates and the like.
To gain access to the contents in the known sachets, it is necessary to break the sachets open. This may be done by tearing or by cutting or by pressure rupturing, but whatever the method used, as soon as release of the contents takes place, the sachet must be arranged so that the contents are discharged in a particular direction or in a particular location as by virtue of the nature of the sachets, the contents will be discharged directly into the surrounding atmosphere. Obviously, if these sachets rupture undesirably when in the wrong location or position, considerable mess and inconvenience can result.
The present invention aims at providing a novel form of single use sachet which at least in its preferred embodiment does not suffer from the disadvantages of the conventional sachet mentioned above.
In accordance with the present invention a sachet for dispensing a portion of a fluent medium characterized in that the sachet is entirely of flexible sheet material sections sealed together to define a sealed compartment containing said fluent medium, and an expansion chamber, said sealed compartment being designed to be popped open by hand pressure to cause the fluent medium to be ejected from the compartment into the expansion chamber which slows down the ejecting medium and retains it in the sachet, said expansion chamber either having an outlet or being adapted to be provided with an outlet at a predetermined location, whereby the medium can at the user's leisure be poured directly from the sachet.
In one embodiment, the outlet comprises a series of apertures in a sheet section forming an outer side wall of the sachet, which side wall lies against a sheet section which is interior of the sachet and defines the sealed compartment.
Preferably, the sheet sections defining the expansion chamber are sealed together to form a baffle to the ejecting medium to change its direction of flow in the expansion cheer.
Alternatively, the sachet is made up of three sheet sections of the same size and sealed peripherally in face to face arrangement, the sealed compartment being defined between one of the outer sections and the middle section.
Preferably also, the sachet is made up of two sheet sections of the same size sealed peripherally in face to face arrangement, the sealed compartment and expansion chamber being defined by an additional weak seal line which connects the two sheet sections along a line extending between two points on the periphery of the sachet.
According to another feature, an outlet is provided in the expansion chamber by providing a gap in the peripheral seal of the sachet.
Preferably, said baffle is located between the sealed compartment and the outlet.
In using a sachet according to the invention pressure is applied to the sachet to cause the sealed compartment to pop or rupture and to discharge the contents into the expansion chamber which slows down the contents preventing them from being ejected undesirably and prematurely from the ou
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Maloney John
O'Reilly Daniel J.
Kashnikow Andres
Pomrening Anthoula
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