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US 10,603,864 B2Granted
Apparatus for producing a corrugated product
AssigneeIntpro, LLC
InventorHerbert B. Kohler
Life of this patent
Estimating the term…
Abstract
An apparatus for introducing transverse trapezoidal corrugations into a traveling web is provided, and includes a plurality of corrugating rollers for imparting corrugations to the web. In disclosed embodiments four such rollers are provided in a roller train defining respective first, second and third nips therebetween, wherein the teeth of the first and second rollers have rounded distal faces and those of the third and fourth rollers have flattened distal faces. Methods of yielding a trapezoidal corrugated web also are disclosed.
Claims28
An apparatus for producing a corrugated product, comprising:
- a roller train comprising:
- a first corrugating roller having a first set of corrugating teeth,
- a second corrugating roller having a second set of corrugating teeth,
- a third corrugating roller having a third set of corrugating teeth, and
- a fourth corrugating roller having a fourth set of corrugating teeth;
- a first nip defined between said first and second corrugating rollers opposing one another;
- a second nip defined between said second and third corrugating rollers opposing one another;
- and
- a third nip defined between said third and fourth corrugating rollers opposing one another;
- each tooth in each of said first, second, third and fourth sets of teeth comprising a distal face, a leading flank and a trailing flank, the distal faces of each of said first and second sets of teeth being rounded, the distal faces of each of said third and fourth sets of teeth being substantially flat.
7 more elements
An apparatus for producing a corrugated product, comprising:
- a roller train comprising:
- a first corrugating roller having a first set of corrugating teeth,
- a second corrugating roller having a second set of corrugating teeth,
- a third corrugating roller having a third set of corrugating teeth, and
- a fourth corrugating roller having a fourth set of corrugating teeth;
- a first nip defined between said first and second corrugating rollers opposing one another;
- a second nip defined between said second and third corrugating rollers opposing one another;
- and
- a third nip defined between said third and fourth corrugating rollers opposing one another;
- each tooth in each of said first, second, third and fourth sets of teeth comprising a distal face, a leading flank and a trailing flank, the distal faces of each of said first and second sets of teeth being rounded, the distal faces of each of said third and fourth sets of teeth being flattened,
- each tooth of the first and second sets of teeth having radiused edges between the distal face and the respective leading and trailing flanks thereof,
- each tooth of the third and fourth sets of teeth having reduced-radius edges between the distal face and the respective leading and trailing flanks thereof, said reduced-radius edges having radii of curvature smaller than the edges of the teeth of the first and second sets of teeth, and
- the radii of curvature of said edges of said third and fourth sets of teeth being not more than 0.5 times the radii of curvature of said edges of either of said first and second sets of teeth.
10 more elements
An apparatus for producing a corrugated product, comprising:
- a roller train comprising:
- a first corrugating roller having a first set of corrugating teeth,
- a second corrugating roller having a second set of corrugating teeth,
- a third corrugating roller having a third set of corrugating teeth, and
- a fourth corrugating roller having a fourth set of corrugating teeth;
- a first nip defined between said first and second corrugating rollers opposing one another;
- a second nip defined between said second and third corrugating rollers opposing one another;
- and
- a third nip defined between said third and fourth corrugating rollers opposing one another;
- each tooth in each of said first, second, third and fourth sets of teeth comprising a distal face, a leading flank and a trailing flank, the distal faces of each of said first and second sets of teeth being rounded, the distal faces of each of said third and fourth sets of teeth being flattened, and
- the distal faces of the teeth of the fourth set of teeth having substantially the same width and circumferential spacing as the distal faces of the teeth of the third set of teeth.
8 more elements
An apparatus for producing a corrugated product, comprising:
- a roller train comprising:
- a first corrugating roller having a first set of corrugating teeth,
- a second corrugating roller having a second set of corrugating teeth,
- a third corrugating roller having a third set of corrugating teeth, and
- a fourth corrugating roller having a fourth set of corrugating teeth;
- a first nip defined between said first and second corrugating rollers opposing one another;
- a second nip defined between said second and third corrugating rollers opposing one another;
- a third nip defined between said third and fourth corrugating rollers opposing one another;
- a pair of feed rollers defining a feed nip therebetween and located upstream of said first nip along a web travel pathway, said pair of feed rollers being rotatable to feed a web through said feed nip on its way to said first nip along the web travel pathway;
- and
- a capacitive feed apparatus located upstream of the first nip and downstream of the feed nip along the web travel pathway and adapted to dynamically adjust a path length of said pathway therebetween in phase with tension oscillations in said web that result from the web traversing said first nip, the capacitive feed apparatus comprising a cam roller rotatable about a cam axis and having a variable radius such that a radial distance between the cam axis and the outer surface periodically increases and decreases about said cam axis,
- each tooth in each of said first, second, third and fourth sets of teeth comprising a distal face, a leading flank and a trailing flank, the distal faces of each of said first and second sets of teeth being rounded, the distal faces of each of said third and fourth sets of teeth being flattened.
9 more elements
Dependencies are inferred from the claim text.