Abstract Disclosed is a perforator blade for core wound paper products, such as toilet tissue and paper towels. The perforator blade has a relatively narrow notch width and a relatively narrow tooth width. As the notch width and tooth width of the perforator blade are decreased, the total notch width, which is the aggregate of the width of each notch across the total width of the perforator blade, is similarly decreased. A perforator blade according to the present invention provides very high perforation bond strengths, joining superimposed plies in face-to-face relation, without unduly increasing the tensile strength of the lands bridging adjacent sheets of the core wound paper product. Also, individual tooth flexibility is increased according to the present invention resulting in enhanced perforator blade life and perforation bond quality. Perforated paper products according to the present invention also exhibit less lint, reducing hygiene problems, reduced occurrences of sheet tearing during dispensing, and provide a smoother, better finished appearance during dispensing.
A core wound paper product having adjacent sheets defined and divided by transverse perforations, said perforations comprising alternately spaced cuts and lands, each of said cuts having a width of less than about 0.9 millimeters, and each of said lands having a width less than about 0.5 millimeters, said paper product having a total land width of less than about 30.5 millimeters per 11.33 centimeters of width of said paper product.
Claim 2
Dependent Claim
71 words
A core wound paper product having adjacent sheets defined and divided by transverse perforations, said perforations comprising alternately spaced cuts and lands, each of said cuts having a width of less than about 0.9 millimeters, and each of said lands having a width less than about 0.5 millimeters, said paper product having a total land width of less than about 30.5 millimeters per 11.33 centimeters of width of said paper product.
Claim 3
Dependent Claim
18 words
A paper product according to claim 1 wherein said cuts are less than about 0.8 millimeters in width.
Claim 4
Dependent Claim
20 words
A paper product according to claim 1, wherein each of said lands are less than about 0.3 millimeters in width.
Claim 5
Dependent Claim
26 words
A paper product according to claim 2 or 3 wherein said total land width is less than about 20.8 millimeters per 11.33 centimeters of product width.
Claim 6
Dependent Claim
26 words
A paper product according to claim 1 wherein said total width of said lands is less than about 25.4 millimeters per 11.33 centimeters of product width.