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Friends
I am processing an injection molded component which is flat ring like structure. the OD is 700 mm & ID is 300 mm approximately, component thickness is 7.0 mm . it has small bosses of dia 10 to the height of 100 on the face.
the material is PPO + PS blend with 3 0 % glass filled & MFI is 14
processing parameters are given below
clamping tonnage 800
injection pressure 54 mpa
melt temp : 290 degree centigrade
mold temp 80 degree
cycle time 65 secs
no of gates 4
the component is filling properly but it is having three major issues
1. warpage up to 30 mm in thickness & is getting twisted
2. thickness variation , inner side it is 7.1 towards gate & outer edge it is 6.8
3. white streaks of glass on surface
find the photos attached
tried using fixture for avoiding warpage but no use
can somebody suggest the remedy?
.
I am processing an injection molded component which is flat ring like structure. the OD is 700 mm & ID is 300 mm approximately, component thickness is 7.0 mm . it has small bosses of dia 10 to the height of 100 on the face.
the material is PPO + PS blend with 3 0 % glass filled & MFI is 14
processing parameters are given below
clamping tonnage 800
injection pressure 54 mpa
melt temp : 290 degree centigrade
mold temp 80 degree
cycle time 65 secs
no of gates 4
the component is filling properly but it is having three major issues
1. warpage up to 30 mm in thickness & is getting twisted
2. thickness variation , inner side it is 7.1 towards gate & outer edge it is 6.8
3. white streaks of glass on surface
find the photos attached
tried using fixture for avoiding warpage but no use
can somebody suggest the remedy?
.