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1. (CA2984911) METHOD OF INJECTION MOLDING WITH CONSTANT-VELOCITY FLOW FRONT CONTROL

Office : Canada
Application Number: 2984911 Application Date:
Publication Number: 2984911 Publication Date: 05.01.2017
Publication Kind : A1
Prior PCT appl.: Application Number:PCTUS2016040249 ; Publication Number: Click to see the data
IPC:
B29C 45/77
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45
Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
17
Component parts, details or accessories; Auxiliary operations
76
Measuring, controlling or regulating
77
of velocity or pressure of moulding material
CPC:
B29C 45/77
B29C 45/7646
B29C 45/766
B29C 45/7693
B29C 45/78
B29C 45/80
B29C 2945/76006
B29C 2945/76013
B29C 2945/7604
B29C 2945/7618
B29C 2945/76287
B29C 2945/76381
B29C 2945/76498
B29C 2945/76531
B29C 2945/76538
B29C 2945/76545
B29C 2945/76859
B29C 2945/76936
B29K 2101/12
Applicants: IMFLUX INC.
Inventors:
Priority Data: 62/186,739 30.06.2015 US
Title: (EN) METHOD OF INJECTION MOLDING WITH CONSTANT-VELOCITY FLOW FRONT CONTROL
(FR) PROCEDE DE MOULAGE PAR INJECTION A REGULATION DE FRONT D'ECOULEMENT A VITESSE CONSTANTE
Abstract: front page image
(EN) In order to injection mold parts at a constant flow front velocity in a mold cavity of an injection molding system, particularly where the mold cavity has a varying thickness along its length, mold modeling software is used to calculate the cross-sectional area as a function of the distance from the gate, percentage of fill, or length of the mold cavity. Based on that cross-sectional area, the mold modeling software determines an appropriate recommended ram force profile and/or melt pressure profile that would result in filling the mold cavity at a constant flow rate. An injection molding system is then operated according to the recommended ram force profile and/or melt pressure profile.


Also published as:
EP3317075WO/2017/004300