Corrugating machinery
AssigneeSimon Container Machinery Limited
InventorBjorn Iversen
Life of this patent
Estimating the term…
Abstract
Apparatus for applying pressure in a controlled manner to a moving web of material for the purpose of transferring heat to the web passing over heating means, for curing the adhesive thus bonding together the component sheets making up the web, includes a plurality of pressure rolls resting directly or indirectly on the web, manual and automatic adjustments for varying the effective weight of the rolls to vary said applied pressure in accord with variations in the speed of the web, such being adjustable for varying the rate of said adjustment, and an arrangement for preselecting a condition such that at zero web speed, the effective weight has an initial positive or negative value.
Claims9
Apparatus for applying pressure in a controlled manner to a moving web of material, including a plurality of pressure rolls arranged to rest directly or indirectly on said web, means for adjusting the effective weight of said rolls to vary said applied pressure, drive means for said adjusting means, means for sensing the pressure applied by said rolls and providing a signal corresponding to said pressure, means for sensing the speed of movement of said web and providing a signal corresponding to said speed, means for continually comparing said signals from said pressure and speed sensing means and for automatically actuating said drive means accordingly thus to cause the effective weight of said rolls to vary as the speed of the web varies, means for varying the rate at which said effective weight may vary, and means for preselecting an initial positive or negative constant factor of said effective weight.
Dependencies are inferred from the claim text.