Stock material or miscellaneous articles – Structurally defined web or sheet – Fold at edge
Patent
1996-07-15
2000-07-18
Ahmad, Nasser
Stock material or miscellaneous articles
Structurally defined web or sheet
Fold at edge
221 48, 270 3901, 270 3906, 270 3907, 428124, 428126, 428130, 493430, B32B 304
Patent
active
060904674
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an apparatus and method to manufacture a towel or tissue stack, as well as the towel or tissue stack itself.
BACKGROUND OF THE INVENTION
Towels and tissues are stacked and delivered to a dispenser so that as each tissue is withdrawn from the box, the next tissue is moved to a position protruding from the apertures through which the towels or tissues are withdrawn. This action of delivering the next towel or tissue to a position protruding through the aperture is achieved by overlapping the folds of adjacent tissues in the tissue stack.
There are two constraints in the formation of a tissue stack. Firstly the portion protruding from the aperture must be of a size enabling the user to grasp the tissue. Also the portion extending from the dispenser must be of a sufficient size and therefore strength so that when it is gripped the tissue can be withdrawn from within the box without tearing of the tissue. The next constraint is the number of tissues contained within a stack to be located within the dispenser. If the tissue strength is increased so that the tissue does not rip as it is being withdrawn from within the box, the stack becomes too thick. It is therefore in some instances, desirable to minimise the thickness of the sheet in order to ensure that the stack contains a sufficient number of tissue sheets.
A first known tissue or towel stack includes adjacent tissues or towels overlapping by one panel only. In other instances, the tissues or towels consist of a single sheet but again the adjacent tissues are only overlapped by a single panel. In a still further configuration, again the tissues or towels are of a single thickness but overlap adjacent a fold only.
In the first two discussed stacks, each tissue consists of three folds. In the last mentioned stack, each tissue has three fold panels and two part panels.
The above discussed towel or tissue stacks suffer from the disadvantage that they do not provide a stack which is compact and therefore provides a desired number of towel or tissue sheets while at the same time providing towel or tissue sheets which can be withdrawn from within the dispenser regularly without tearing.
Commerically available machines that produce tissue or towel stack suffer from the disadvantage that they can only produce stacks of the above kind. They are provided with a lap roll spaced from a retard roll, but are driven at relative speeds so that the tissues or towels overlap as discussed above.
OBJECT OF THE INVENTION
It is the object of the present invention to overcome or substantially ameliorate the above disadvantages.
SUMMARY OF THE INVENTION
There is disclosed herein a tissue or towel stack comprising: as to provide at least three tissue or towel panels, and wherein the leaves are folded back upon themselves so that each leaf has a first set of panels comprising two adjacent panels, which first set of panels is located between a second set of panels comprising two adjacent panels of an adjacent leaf.
Preferably there are six panels in each leaf.
There is also disclosed herein a method of producing a towel or tissue stack comprising the steps of: discrete towel or tissue leaves; has a leading portion overlapping a trailing portion of the preceding leaf, the leaves overlapping by a predetermined length; panels, with overlapping portions of adjacent leaves being folded to form discrete panels such that each leaf has a first set of panels comprising two adjacent panels folded between a second set of panels comprising two adjacent panels of an adjacent leaf.
Preferably each leaf is folded to have six panels.
There is still further disclosed herein a machine to produce a towel or tissue stack, each stack having a plurality of leaves, with each leaf consisting of at least three panels, said machine comprising: and transversely cuts the web to form discrete leaves of a predetermined length; so that adjacent leaves overlap; three panels, with overlapping portions of adjacent leaves forming discrete panels, and wherein th
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Ahmad Nasser
Kimberly-Clark Australia Pty Limited
LandOfFree
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