SINGLE WEB SINGLE-FOLD APPARATUS AND METHOD
First Claim
Patent Images
1. A folding apparatus for forming a pattern of single-folded sheets from a single web of material, the folding apparatus comprising:
- a pair of counter-rotating first and second folding rolls forming a nip therebetween for passage through the nip of at least one stream of sheets; and
a sheet cutting and directing arrangement operable in a single-fold mode for cutting and directing successive sheets cut from the single web of material alternatively along first and second paths extending through the nip in two parallel streams of sheets to produce the single-folded pattern of interfolded sheets.
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Abstract
A folding apparatus and method are provided for producing a single-folded pattern of interfolded sheets from a single web of material, through the use of a sheet cutting and directing arrangement having a sheet crossover arrangement. Some embodiments are operable in a variety of modes, with one or two webs of material, to produce either single-fold or multi-fold patterns of interfolded sheets. Some embodiments include a sheet cutting arrangement inside of the sheet cutting and directing arrangement for selectively producing sheets of various lengths.
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Citations
60 Claims
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1. A folding apparatus for forming a pattern of single-folded sheets from a single web of material, the folding apparatus comprising:
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a pair of counter-rotating first and second folding rolls forming a nip therebetween for passage through the nip of at least one stream of sheets; and a sheet cutting and directing arrangement operable in a single-fold mode for cutting and directing successive sheets cut from the single web of material alternatively along first and second paths extending through the nip in two parallel streams of sheets to produce the single-folded pattern of interfolded sheets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for forming a pattern of single-folded sheets from a single web of material using a pair of counter-rotating first and second folding rolls forming a nip therebetween for passage through the nip of at least one stream of sheets, the method comprising:
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feeding the single web of material to a sheet cutting and directing arrangement configured for cutting and directing successive sheets cut from the single web of material alternatively along first and second paths extending through the nip in two parallel streams of sheets to produce the single-folded pattern of interfolded sheets; cutting successive sheets from the single web of material with the sheet cutting and directing arrangement; and directing the successive sheets cut from the single web of material alternatively along first and second paths extending through the nip in two parallel streams of sheets in a single-fold mode of operation to produce the single-folded pattern. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A folding apparatus for alternatively forming either a single-fold or a multi-fold pattern of interfolded sheets from a single web of material, the folding apparatus comprising:
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a pair of counter-rotating folding rolls forming a nip therebetween for passage through the nip of at least one stream of the sheets for folding the sheets; and a sheet cutting and directing arrangement for cutting and directing successive sheets cut from the single web of material through the nip between the folding rolls; the sheet cutting and directing arrangement being configured for operation in a single-fold mode in which the sheet cutting and directing arrangement directs the successive sheets through the nip in two parallel streams of sheets; the sheet cutting and directing arrangement also being configured for operation alternatively in a multi-fold mode in which the sheet cutting and directing arrangement directs the successive sheets through the nip in a single stream of sheets with the successive sheets overlapped in a shingle-like orientation. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54)
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55. A method for alternatively forming either a single-fold or a multi-fold pattern of interfolded sheets from a single web of material in a folding apparatus having a pair of counter-rotating folding rolls forming a nip therebetween for passage through the nip of at least one stream of the sheets for folding the sheets, the folding apparatus also having a sheet cutting and directing arrangement for cutting and directing successive sheets cut from the single web of material through the between the folding rolls, the method comprising:
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operating the folding apparatus in a single-fold mode in which the sheet cutting and directing arrangement directs the successive sheets through the nip in two parallel streams of sheets to form the single-fold pattern of interfolded sheets; and alternatively operating the folding apparatus in a multi-fold mode in which the sheet cutting and directing arrangement directs the successive sheets through the nip in a single stream of sheets with the successive sheets overlapped in a shingle-like orientation to form the multi-fold pattern of interfolded sheets. - View Dependent Claims (56, 57, 58, 59, 60)
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Specification