https://www.avient.com/sites/default/files/2022-05/OnFlex S HF Electrical Housing Case StudyNEW.pdf
ECO-CONSCIOUS SOLUTION
REMOVES HALOGENS
FROM ELECTRICAL
JUNCTION BOXES
CASE STUDY: ONFLEX™ S HF THERMOPLASTIC ELASTOMERS
Ch
all
en
ge
A
cc
ep
te
d.
https://www.avient.com/sites/default/files/2021-06/sat-avient-de-mexico-sa-de-cv-toluca.pdf
Cadena Original Sello: ||2021/06/08|PME940105NT9|CONSTANCIA DE SITUACIÓN FISCAL|200001088888800000031||
Sello Digital: HMw/p0JkFsls7AMe21FdEdUJTEh+0Kb35I5JBi3S6Cm8ZhPF6eLtuMXjroG46jgIUwuIRpJWlogwyU0ktZuQ+30T
d/xOtYzCUV64IW4hLEhtSajVQGhjenTevMUWzW8HqnC1GRRikHBcRzO5XtrbZVD+d7TpmlO4cpJoT/3QHH8=
https://www.avient.com/sites/default/files/2024-11/ColorMatrix Lactra LX Product Bulletin.pdf
Vitamins A, B2 (riboflavin), D,
and amino acids are lost, lipids (milk fats) oxidize,
and off-flavors can develop.
https://www.avient.com/sites/default/files/2020-10/luxury-closures-gravi-tech-design-guide-2.0-application-specific.pdf
The round at the bottom of the boss should
Figure 4 - Drafting Guidelines for
Nominal Wall Thickness
Cross section
showing draft
Figure 5 - Rib design guidelines
1/4˚—–1˚
2.5W
W
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
a
x
D
is
p
la
c
e
m
e
n
t
M
a
g
n
it
u
d
e
(
m
m
)
0
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
W
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
design guidelines
be 10% of wall thickness.
Unfortunately, this method
only has limited durability and has a minimum
amount of assembly repeatability .2
FIGURE 19 - Mechanical Fasteners
Design Guidlines
Potential high stress
due to wedging action
of screw head
Potential high stress
due to wedging action
of screw head
Poor DesignsPoor Designs Preferred DesignsPreferred Designs
Planned gap between added
bosses prevents excessive
bending of hosing as bosses
touch and go into compression
Planned gap between added
bosses prevents excessive
bending of hosing as bosses
touch and go into compression
Alternative recessed head
design avoids potentially
dangerous wedging action
Alternative recessed head
design avoids potentially
dangerous wedging action
Truss or Round Head ScrewTruss or Round Head Screw
Potential high bending
stress as bolt is tightened
Potential high bending
stress as bolt is tightened
Flat-head Screw
Standard Screw
Plastic Part
Metal Sub-frame
Shoulder Screw
Plastic
Part
Metal
Casting
FIGURE 20 - Mechanical fasteners design guidelines
F=
π × µ × DShaft 1engage × σH
W
I = D – 0.373 = 0.0002"
σH =
1 × W
DShaft
W + v
E( )
σH = = 200psi
0.002 × 1.998
0.375 1.998 + 0.4
450000( )
W = = 1.998
1 – 0.375
0.650( )
2
1 + 0.375
0.650( )
2
W = DShaft
ODHub
1 – ( )2
DShaft
ODHub
( )21 +
FIGURE 16 - Interference fit variable
F=
π × µ × DShaft 1engage × σH
W
I = D – 0.373 = 0.0002"
σH =
1 × W
DShaft
W + v
E( )
σH = = 200psi
0.002 × 1.998
0.375 1.998 + 0.4
450000( )
W = = 1.998
1 – 0.375
0.650( )
2
1 + 0.375
0.650( )
2
W = DShaft
ODHub
1 – ( )2
DShaft
ODHub
( )21 +
FIGURE 17 - Geometry factor variable
F=
π × µ × DShaft 1engage × σH
W
I = D – 0.373 = 0.0002"
σH =
1 × W
DShaft
W + v
E( )
σH = = 200psi
0.002 × 1.998
0.375 1.998 + 0.4
450000( )
W = = 1.998
1 – 0.375
0.650( )
2
1 + 0.375
0.650( )
2
W = DShaft
ODHub
1 – ( )2
DShaft
ODHub
( )21 +
FIGURE 18 - Hoop stress equation
F=
π × µ × DShaft 1engage × σH
W
I = D – 0.373 = 0.0002"
σH =
1 × W
DShaft
W + v
E( )
σH = = 200psi
0.002 × 1.998
0.375 1.998 + 0.4
450000( )
W = = 1.998
1 – 0.375
0.650( )
2
1 + 0.375
0.650( )
2
W = DShaft
ODHub
1 – ( )2
DShaft
ODHub
( )21 +
FIGURE 19 - Press fit pull-out force
.400
.500
.375
.373
.650
FIGURE 15 - Press fit example
Design Guide 13
ADHESIVE TYPES
A chart containing the various specific adhesive
types, with advantages and disadvantages of
both can be seen in the appendix .
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
Part
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
design guidelines
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 .
https://www.avient.com/sites/default/files/2021-01/eccoh-cpr-product-bulletin.pdf
Data Insulation 6200 D 11.0 14 350 30 Low thickness and high speed processing.
https://www.avient.com/sites/default/files/2020-08/eccoh-cpr-product-bulletin.pdf
Data Insulation 6200 D 11.0 14 350 30 Low thickness and high speed processing.
https://www.avient.com/sites/default/files/2020-10/sem-base-station-antenna-application-bulletin-jp.pdf
安定したDk品質 ‒ D k値を測定し、確認検証ができます。
https://www.avient.com/sites/default/files/resources/HIGH_PERFORMANCE_CLEAR_THERMOPLASTICS_ELASTOMER.pdf
TMA strain versus temperature measurement
-2000
-1500
-1000
-500
0
D
im
e
n
si
o
n
C
h
a
n
g
e
(µ
m
)
20 40 60 80 100 120 140 160 180 200
Temperature (°C)
––––––– 224-020A-10N-HDT.003
– – – – 224-001A-HDT
Universal V2.6D TA Instruments
3038 / ANTEC 2003
Figure 3.
https://www.avient.com/sites/default/files/2022-06/Nymax BIO Bio-based Polyamide Solutions Processing Guide.pdf
Parameters NM5600-8002 RS NM5600-8004 RS
Drying Temperature 100–120°C 100–130°C
Drying Time 4–6 hours 4–6 hours
Barrel Temperature °C °C
Rear Zone 250–270 260–270
Central Zone 260–280 270–290
Front Zone 270–295 290–305
Nozzle 290–300 290–300
Mold Temperature 80–100 80–100
Screw Speed Moderate Moderate
Back Pressure 3–10bar 3–10bar
Cushion stroke 5–10% of plasticizing stroke 5–10% plasticizing of stroke
Injection Speed Medium Medium
Injection Pressure Medium–high Medium–high
Holding Pressure 30–50% of injection pressure 20–40% of injection pressure
Screw Type General purpose General purpose
Screw L/D 20:1 20:1
Screw Compression Ratio 2.5:1 2.5:1
Non-return Check Valve Free flow check ring Free flow check ring
Nozzle Type Reverse taper Reverse taper
Barrel Capacity 30–80% of barrel should be used
Processing Guide 2
Start Up & Shut Down Recommendations
Purge Compound 1. 2–3 melt flow PP or purging compound.
https://www.avient.com/sites/default/files/2020-08/colormatrix-lactra-sx.pdf
同时分解产物也会导致维生素A、B2(核黄
素)、D和氨基酸流失,脂质(牛奶脂肪)氧化,令乳
制品产生异味。