Patent ID: 11883986
Assignee: KRAUSSMAFFEI TECHNOLOGIES
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 3:
4. Method according to claim 1, wherein in the accepted-part reference injection-moulding cycle and in the current injection-moulding cycle a compound pressure integral during injection is determined as measured variable which correlates with a processing viscosity of the melt, according to the formula:

Wz,act/ref=∫t0t1pmasse,act/ref(t)dt, 

wherein
t0 is a time of beginning the injection phase tinj,start or a time after closure of a back flow valve and
t1 is a time of the switch-over tinj,umschalt or a time which lies after t0 but before tinj,umschalt.