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
Anti-GITR antibodies
Boring machine
Method and apparatus for providing contention-based resource zones in a wireless network
Automatic portable electronic device configuration
Control unit of a ride level control system, and ride level control system
Apparatus and method for an iterative cryptographic block
Peptide vectors
  Randomly Featured Patents
Instance updating method and apparatus therefor
System and method of using acoustic models for automatic speech recognition which distinguish pre- and post-vocalic consonants
Noninvasive characterization of a flowing multiphase fluid using ultrasonic interferometry
System for quenching hot coke
Photosensitive material processor
Information providing apparatus and method, information processing apparatus and method, program storage medium, program, and information providing system
Calcium phosphate compound-cellulose fiber composite material and method for production thereof
Integrated accelerometer with single hardstop geometry
Managing asynchronous objects received over multiple communication protocols
High-strength vehicle-mounted cargo transport apparatus