초록 ▼

The present invention provides a combination roller, a machine and process for cutting workpieces from a web moving at a first speed and depositing them on and bonding them to a substrate web moving at a second speed with the functions of cutting, transferring, and bonding all carried out on a singl

The present invention provides a combination roller, a machine and process for cutting workpieces from a web moving at a first speed and depositing them on and bonding them to a substrate web moving at a second speed with the functions of cutting, transferring, and bonding all carried out on a single roller. The reduction in roller mass achieved by this roller and machine design permits driving the combination roller at variable speeds by means of a servomotor and servomotor controller. The resulting machine permits electronic rather than machine grade changes as the machine and process are used to produce products having different configurations.

대표청구항 ▼

[ We claim:] [1.] A process for cutting discrete workpieces from a first uncut workpiece web moving at a first workpiece web speed and transferring and bonding said cut discrete workpieces to a substrate web moving at a second substrate web speed comprising carrying out on a single roller the steps

[ We claim:] [1.] A process for cutting discrete workpieces from a first uncut workpiece web moving at a first workpiece web speed and transferring and bonding said cut discrete workpieces to a substrate web moving at a second substrate web speed comprising carrying out on a single roller the steps of:a) receiving on said roller said first uncut workpiece web and cutting discrete workpieces from said first uncut web on said roller while said roller is moving during a first fraction of its rotation at or near said first workpiece web speed and holding said cut discrete workpieces to said roller by vacuum means;b) changing the speed of said roller and said discrete workpieces to match the speed of said second substrate web during a second fraction of rotation of said roller;c) transferring said discrete workpieces to said second substrate web and bonding said discrete workpieces to said substrate web while said roller is moving for a third fraction of its rotation at said second substrate web speed; andd) changing the speed of said roller to approach the speed of said first workpiece web during a fourth fraction of rotation of said roller.