Resources Contact Us Home
Pneumatic scrap reduction system for rotary die cutter

Image Number 6 for United States Patent #4781088.

A rotary die cutter system minimizes the amount of scrap between successive blanks cut from web material by holding the web against backward movement at a position spaced upstream from the nip defined by the die and anvil cylinders, retracting the cut leading end of the web through a predetermined distance by means of a fluid pressure cylinder in response to release of the web by the cut-off knife at the trailing edge of the die on the die cylinder such that on the next cycle, the leading edge of the die will engage the web at a position spaced so close to the retracted leading end of the web that contiguous portions of a single blank can be cut from the web during successive revolutions of the die cylinder.

  Recently Added Patents
Secure device sharing
Apparatus and method for multiplying frequency of a clock signal
Semiconductor device having a triple gate transistor and method for manufacturing the same
Laser protection polymeric materials
Semiconductor devices having through electrodes and methods of fabricating the same
Gathering user feedback in web applications
Image surveillance system and method of detecting whether object is left behind or taken away
  Randomly Featured Patents
High frequency voltage multiplier for an electrically erasable and programmable memory device
Method for selectively acidizing the less permeable zones of a high temperature subterranean formation
Nonlinear filter
Access control lists and profiles to manage femto cell coverage
Low wattage metal halide arc discharge lamp
Container unloading device
Bypass device and method for a power line communications system
Order information recording system and photographic image processing method
Cyclopentadiene type compounds and method for making