Severing by tearing or breaking – Severing by manually forcing against fixed edge – With blade-edge guard
Patent
1987-05-18
1988-11-29
Yost, Frank T.
Severing by tearing or breaking
Severing by manually forcing against fixed edge
With blade-edge guard
225 43, 225 52, 225 90, B65D 85671
Patent
active
047875437
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a dispenser for tough, hardly tearable, unadhesive, weblike rolled-up material.
For a long time there have been on the market several types of such material, which are sold together with disposable dispensers provided with cutting or tearing means. Examples of such are ordinary adhesive tape rolls, plastic film for use in households, drying paper with holders etc. Tearing or cutting-off usually takes place against a serrated edge made from plastics, carton or metal. This edge may not be so sharp that there is the risk of injury due to cuts or tears when pulling-out and tearing-off the rolled-up material.
For certain kinds of tough and hardly tearable materials, e.g. such having a component of textile, non-woven or tough and thick polymer film, a serrated edge of the known kinds is not sufficiently sharp. These materials therefore require the availability of scissors or a sharp knife for the removal of a piece of material.
It has therefore been a desire for a long time to provide a simple dispenser, which functions satisfactorily for tough, hardly tearable, unadhesive, weblike rolled-up materials, e.g. such as those being used for dressing purposes in medical care. Rolls of dressing material have namely been delivered so far in cardboard cartons, which function both as packing and dispenser.
The demands which must be met for such a dispenser to function satisfactorily correspond in general to the ones made on a simple dispenser for an ordinary adhesive tape roll. In the first place, it must be possible to be able to withdraw the rolled-up material from the dispenser with a simple hand movement and without any preparatory operations. It should not be necessary to change the grip of one hand on the dispenser and the other hand on the material web during withdrawal and tearing-off the material web. In the second place there must be no risk of injury due to cuts and tears against the sharp tear-off edge during these operations. Furthermore, tearing-off must be smooth and easy, with a light hand, and transverse the material web.
The situation that strong and tough web material must be folded almost 180.degree. around a knife, even if it is sharp, for comfortable tearing to take place, has so far constituted a considerable problem.
At least certain types of rolled-up material have therefore up to now been cut or clipped with a separate knife or scissors, since the known dispensers have not been able to be provided with a sufficiently sharp knife, due to the risk of cutting injury. This has naturally been a disadvantage, since a separate tool must then always be available, and withdrawing and parting the rolled-up material can not be done in one operation with the same hand movement.
If the serrated edge on known dispensers for tape rolls is replaced with a knife, one does not obtaine a dispenser which functions for the web material in question here, even if the risk of injury on the unprotected knife is overlooked. A further problem with these materials is namely that they often lack adhesive coating, or have such a coating covered by a paper layer treated with a releasing agent.
For self-adhesive rolled-up material, e.g. ordinary adhesive tape, there is obtained a braking action against rolling up again, since the material adheres to the tear-off device as it is torn off. This braking action is not present when the material has no adhesive ability. After the material has been withdrawn and cut off, a flap of it must remain outside the packing so that it can be used as a gripping flap for withdrawing further material.
To avoid cutting injuries, an envisaged dispenser provided with an edge or a knife for tough material must be provided with some type of protection for the sharp edge or knife. Since a non-adhesive material is not braked during tearing-off but is rolled up again instead, it must be inserted between knife and knife guard each time new material is to be withdrawn, which is an undesirable further operation, and would naturally be both time-consuming and irritating in pr
REFERENCES:
patent: 2708510 (1955-05-01), Klause
patent: 2889975 (1959-06-01), Hanlon
patent: 2921493 (1960-01-01), Emmert
patent: 2936936 (1960-05-01), Sano
patent: 3190520 (1965-06-01), Wyant
patent: 3843034 (1974-10-01), Lewandowsky
patent: 4196647 (1980-04-01), Fish
Abrahamsson Rolf
Fabo Tomas
Molnlycke AB
Yost Frank T.
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