Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1986-06-16
1988-02-23
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
428137, 428154, 428142, 428247, 428535, 4285371, B32B 310
Patent
active
047269774
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a laminated web for use as a roll towel.
There has long been a need for a satisfactory alternative to the cotton towels which are traditionally used in roll towel cabinets but which are very expensive to make and which are costly to launder. Attempts have been made to produce a roll of paper to replace the cotton rolls. The major drawback with these rolls in the past has been their susceptibility to rupture, especially when wet. Paper rolls have not, therefore, been satisfactory for use in cabinets where the used roll is re-reeled, since, if the towel breaks, the re-reeling can only be re-started by a janitor who must open up the cabinet. The main requirements of a paper product for use in this field are that it is highly absorbent and that it is strong.
Absorbency is provided in the present invention by two layers of tissue paper for example of the kind used in the manufacture of kitchen paper towel. To strengthen the tissue in use, i.e. when a user is drying his hands on the web, the two tissue layers are adhered to a perforated plastics film. This film maintains the integrity of the web when wet but also allows water to pass readily therethrough to ensure that the complete absorbing facility of both tissue layers is utilised.
In operation of a roll towel cabinet the towel may be subjected to very high forces as the towel is withdrawn from the cabinet. Since the towel is naturally grasped in the edge portions the majority of the forces act in these regions. In order to give added strength to the regions, especially when wet, plastics film reinforcing tapes are included along each edge of the web. The tapes will withstand high forces and prevent the progation of tears from the edges across the web.
According to the invention there is provided an elongate parallel sided laminated web for use as a roll towel comprising; two layers of tissue paper extending substantially across the web; a perforated plastics film layer extending between the layers of tissue paper; and a tape in the form of a plastics film disposed along each edge region of the web between the layers of tissue paper. Preferably the plastics film layer is of non-woven material.
Although the tapes will withstand high forces they are not capable of completely protecting the web from the very high forces which are suddenly applied such as when the stop mechanism in the cabinet dispenser comes into operation. In order to withstand such forces special reinforcing threads extending parallel to the length of the web may be included at least in the edge regions of the web and at least some of these threads preferably extend in regions spaced inwardly of the inner edges of the reinforcing tapes. An embodiment of the present invention is described below with reference to the accompanying drawings in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a plan view of the web partly cut away; and
FIG. 2 shows a diagrammatic section through the web.
The web comprises two layers of creped tissue paper 1 between which is adhered a non-woven perforated film layer 2 of plastics material. Reinforcing plastics film tapes 3 are provided along each edge of the web and reinforcing threads 4 are provided in the region of the tapes 3 and inwardly thereof. The web is held together by means of adhesive.
The outer layers of creped tissue paper 1 may be any suitable soft absorbent tissue and each layer will preferably have a minimum basis weight of around 15 g/m.sup.2 and a maximum of around 80 g/m.sup.2. The preferred weight is 26 g/m.sup.2.
The interlayer 2 of perforated plastics film is suitably a polypropylene film having a basis weight of between 7 and 15 g/m.sup.2. The preferred material is SCRINYL (Registered Trade Mark) manufactured by Beghin-Say S. A. comprising a polypropylene film reinforced with polyamide filaments and having a basis weight of 11 g/m.sup.2 which is embossed and stretched to produce the required open structure with the perforations 2a.
Other plastics films, or spun bonded and woven mesh materials, may be used for t
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Goldstein Guy
Roussin-Moynier Yves
Thomas Gareth
Vanhoucke Guy
Beghin-Say S.A.
Bell James J.
Breiner A. W.
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