https://www.avient.com/resource-center?document_type=59&document_subtype=0&industry=0&product_family=0&product_name=0&op=FILTER RESULTS&form_id=resource_filter_form&page=45
Colorant Chromatics™ Precolor and Masterbatch Formulations that counteract yellow tones without sacrificing heat and steam resistance
https://www.avient.com/resource-center?document_type=59&page=42
Colorant Chromatics™ Precolor and Masterbatch Formulations that counteract yellow tones without sacrificing heat and steam resistance
https://www.avient.com/resource-center?document_type=59&page=37
Colorant Chromatics™ Precolor and Masterbatch Formulations that counteract yellow tones without sacrificing heat and steam resistance
https://www.avient.com/resource-center?document_type=59&document_subtype=0&industry=0&product_family=0&product_name=0&op=FILTER RESULTS&form_id=resource_filter_form&page=42
Colorant Chromatics™ Precolor and Masterbatch Formulations that counteract yellow tones without sacrificing heat and steam resistance
https://www.avient.com/news/generational-changes-environmental-concerns-and-new-digital-universe-expected-drive-color-preferences-2023
Here the colors are earthy, but appropriately toned down, dark and somewhat dirty to reflect the anxiety many people are experiencing.
https://www.avient.com/sites/default/files/resources/PolyOne%25202013%2520Annual%2520Report.pdf
Stephen D.
S/ STEPHEN D.
s/ Stephen D.
https://www.avient.com/sites/default/files/2020-10/2020-gravi-tech-design-guide-.pdf
The boss should extend into the nominal wall of
the part, to avoid a thick region and possible sink
Figure 4 - Drafting Guidelines for
Nominal Wall Thickness
Cross section
showing draft
Figure 5 - Rib design guidelines
1/4˚—–1˚
2.5W
3W Min.
.01" R Min. or .25W
.75W for a low shrink material
.50W for a high shrink material
Figure 6 - Wall thickness changes due
to rib placement
16.00
14.00
12.00
10.00
8.00
6.00
4.00
2.00
5.00 10.00 15.00 20.00 25.00 30.00 35.00
Rib-height (mm)
M
ax
D
is
p
la
ce
m
en
t
M
ag
n
it
d
e
(m
m
)
FIGURE 4 - Drafing guidelines for
nominal wall thickness
FIGURE 5 - Rib design guidelines
FIGURE 7 - Wall thickness changes
due to rib placement
FIGURE 6 - Rib height vs. stiffness
10 Gravi-Tech
FIGURE 8 - Side Wall Boss Design Guidelines
Sink
Not Recommended Preferred Design
A
= Diameter
= A
= Primary Wall
= A
= 2A
FIGURE 9 - Guidelines Design Guidelines
4W
2W
.75W For a Low Shrink Material
.50W For a High Shrink Material
FIGURE 9 - Side wall boss design guidelines
FIGURE 10 - Gusset design guidelines
FIGURE 11 - Structural hole
area.
SERIES PARALLEL
Pressure Drop High Low
Flow Rates Consistent Variable
Temperature
Rise Potential Large Small
Horsepower
Requirements Higher Lower
Reynolds Numbers Higher Lower
FIGURE 37 - Parallel vs series cooling line layout
FIGURE 36 - Parallel cooling line layout
Plastic
Molding
Draft
Angle
Mold
Core
Ffriction
Fnormal
Feject
FIGURE 38 - Friction force
Can use larger
pin at intersections
FIGURE 39 - Ejection pin layout
Design Guide 19
FIGURE 39 - Sripper Plate
Core Block Core Insert
Stipper
Plate
Ejector
Pin Bolts Ejector Pin
FIGURE 40 - Ejector sleeve
Land = 3*D
0.001 in
0.02 mm
0.020 in
0.5 mm
D
FIGURE 42 - Ejector pin
FIGURE 41 - Stripper plate
Stripper Plate
This type of ejector is often used with round parts
to provide a constant ejection force on the entire
part.
Design Guide 33
Mold damages Loss of clamp force
Barrel malfunction
Melt temperature too
Transfer position too low
Excessive pack pressure
Excessive back pressure
Repair mold damage
Clean parting line
Reduce pinch-off land
Increase clamp force Dry material Reduce melt temperature
Reduce mold
Reduce hold pressure
Increase transfer
Flash
• Excess material commonly found at parting lines or mold features
Root cause: Too much plastic or mold damage.
34 Gravi-Tech
Design of gate too small
or in wrong location
Machine not providing
Heater overriding
Viscosity too low
Injection velocity
too high
Melt temperature
Remove sharp corners
Change gate type
Move gate to a position
where the melt stream
will impinge upon a mold
feature
Dry material Reduce injection velocity
Increase melt
Jetting
Root cause: Injection speed is too high for the viscosity of the material
Design Guide 35
Finish too rough
Screw configuration
Overworking material
Non-compatible
additive
Melt temperature too
Remove sharp corners
Use smaller screw/barrel
Check melt uniformity
Check L/D ratio
Check additive
compatibility
Reduce screw speed
Reduce residence time
Plate-Out
• Build-up or deposit on mold surface
Root cause: One component of the material is not totally compatible.
36 Gravi-Tech
Shut-off partially turned
Screw problems
Barrel heater problems
Material too dry
Under-packing
Not enough pack
pressure
Transfer position too high
Make sure gate is not
blocked
Insure runner shut-off
is not turned
Check venting
Change gating location
Add flow leader
Insure cushion position
Make sure screw is trans-
ferring at a correct
Change screw/barrel
Make sure material was
dried at proper settings
Increase melt
Increase mold
Decrease transfer
Short Shot
• Not enough material is being injected into the mold to fill out all of the cavities
Root cause: Not enough plastic is getting into the cavity.
https://www.avient.com/sites/default/files/2023-07/Avient-2022-Sustainability-Report.pdf
D&I at Avient is a shared
value and position, but it’s crucial for me to lead by example.”
We have enabled our innovation strategy
through continued investment in R&D, Sales and
Marketing.
R&D Spend
U
.S
.
https://www.avient.com/news/invisio-color-inspiration-2018-polyone-empowers-color-strategies-designs-captivate
This year’s forecasts show an evolution from last year’s tone of paradox and passion.”
https://www.avient.com/company/sustainability/sustainability-report/products/markets/packaging-case-study
ColorMatrix™ Optica™ Toners for PET improve color tone with recycle friendly colorants and reduce carbon emissions through improved bottle blowing efficiencies while enabling increased amounts of postconsumer recycled (PCR) content.