https://www.avient.com/sites/default/files/2025-01/OnForce LFT-Truck Foot Pedal-Case study Snapshot.pdf
Heavy Truck manufacturer
HEAVY TRUCK
MANUFACTURER
E X T E R I O R S T E P P E D A L
• Offer pre-color support to achieve an approved silver color
formulation
• Provide a metallic look with good weather resistance and
wear performance for the exterior part
• Shorten development time to gain durability approval
• Offered color options that met desired metal
color and texture, which was different from
an ordinary plastic feel
• Achieved excellent wear performance and
weather resistance, qualifying it to replace
metal
• Provided support in achieving durability
approval, resulting in significant time and
cost savings
OnForce Long Glass Fiber Reinforced
Polypropylene Composites
KEY REQUIREMENTS
WHY AVIENT?
https://www.avient.com/sites/default/files/2025-03/Complet LFT - Axial Fan Blade - NA case study snapshot.pdf
INDUSTRIAL FAN
MANUFACTURER
A X I A L F A N B L A D E
• Replace aluminium alloy
• Reduce thickness and weight of fan blade
• Withstand 920 Pa of static pressure, high relative humidity
(90-95%), and max temperature of 104ºF
• Redesigned the 1600mm blade utilizing 3D modeling and
mold flow analysis services from Avient Design
• Simulated mechanical load to determine which new
design would provide optimal performance
• Increased strength using a carbon fiber grade, enabling
injection-moldable parts and streamlined production
• Reduced blade thickness to 35% of the original and
blade weight from 7.71 lbs to 1.76 lbs (77% decrease)
• Improved overall efficiency of fan with a thinner, lighter
blade that cuts through the air
Complēt Long Fiber Reinforced Thermoplastic
KEY REQUIREMENTS
WHY AVIENT?
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
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
area .
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/products/thermoplastic-elastomers/tpe-knowledge-center/technical-bulletins/tpe-processing
For both product lines, a “D” designates a TPE based on SBS or SIS, while a “G” designates a TPE based on SEBS or SEPS.
https://www.avient.com/products/thermoplastic-elastomers/tpe-knowledge-center/technical-bulletins/hardness
The Shore D durometer is more appropriate when hardness levels are above 90 Shore A.
https://www.avient.com/products/thermoplastic-elastomers/tpe-knowledge-center/overmolding-guide/overmolding-part-design
Dynaflex D
https://www.avient.com/products/thermoplastic-elastomers/tpe-knowledge-center/technical-bulletins
TPEs made from styrenic block copolymers (SBC) such as Kraton® D or G Polymers have special properties that can enhance the success of a finished part.
https://www.avient.com/sites/default/files/2021-01/eccoh-selection-guide-cn.pdf
特点
电线和电缆
高度阻燃
毒性和烟密度极低
不同级层间可交联
可与色母料、添加剂浓缩液、紫外稳定剂一同加工
高度阻燃
毒性和烟密度极低
适合进行挤压和注射成型
管和配件
材料(ECCOH) 5924C 5920 5511C 5806UV 5127UV 5549/1 8300-8001 8300-8003 8300-8008 1125C 1052C 5309 5995/1C 5555C 5286 3140-3 6151 5865C XLS8002 6649
中低压电缆 光缆 机车/船 光缆 电缆/光缆 电子线 电缆 电子线 电子线 电缆 机车缆护套 电缆/光缆 电缆 机车缆 电缆 电缆/光缆 电缆 电缆 电缆/光缆 应用
热老化等级
热塑性 √ √ √
√交联型
交联方式
密度48
熔融指数(150℃/21.6kg)
硬度shore D
拉伸强度MPa
断裂伸长率%
氧指数%
耐环境应力开裂ESCR
阻燃性能
低温性能
耐油性能
耐UV性能
耐泥浆性能
低摩擦性能
产地
有焰(1mm)ASTM E662
无焰(1mm)
70
235
C类
√
√
√
中国
45
265
中国
68
275
√
√
√
欧洲
210
√
C类
中国
1.49~1.51
4.0
54
12.5
200
36
1.47
3.5
55
14
210
34
1.53
0.8
56
14
150
40
1.51
1
47
9.5
170
38
1.46
3.8
54
15.5
180
32
√
中国
1.6
2.9
49
11.7
170
45
CPR B
√
√
中国/欧洲
1.29
13.5
48
17.5
345
27
FT-2
中国
1.27
9.5
48
13
360
29
90
190
√
中国
1.49
8
53
15.7
245
35
63
180
√
中国
1.54
2.7
55
11.5
180
40
106
214
CPR C
√
√
中国
1.5
8
50
12.5
180
34
84
206
C类
√
中国
1.5
1.6
46
14
250
39
√
√
√
欧洲
1.48
3
46
11
215
36
√
√
欧洲
1.6
2.8
48
10.3
165
41
√
√
√
欧洲
1.58
4.2
48
12.4
160
46
CPR B
√
欧洲
1.46
6
53
17
160
33
39
143
√
欧洲
1.51
4
53
11.5
170
43
50
150
√
√
√
中国
1.54
2.3
56
11.5
155
35
D类
中国
1.5
5.8
12
250
27
FT-2
中国
1.35
10
49
15
320
28
FT-2
中国
辐照/硅烷 辐照 辐照 辐照 辐照 辐照 自交联/水浴辐照/硅烷
√ √
√
√
√ √ √ √ √ √
√ √ √ √ √ √
90℃ 90℃ 90℃ 105℃ 90℃ 105℃ 125℃ 105℃ 105℃ 105℃ 90℃ 90℃ 90℃105℃ 105℃ 105℃ 105℃ 105℃
加工方式(挤出)
材料性能:热塑状态(非交联后)
烟密度(最大)
特殊性能
ECCOH™低烟、无卤解决方案
https://www.avient.com/sites/default/files/2020-09/versaflex-pf-technical-bulletin-sept-2020-es-la.pdf
AJUSTAR LA ADHERENCIA MEZCLANDO VERSAFLEX PF
Grosor de la película:
LDPE de 39 micras/Versaflex PF de 13 micras
F = Adherencia final después
de 7 días a 25° C
i = Adherencia inicial después
de 20 minutos a 25° C
Re
si
st
en
ci
a
al
d
es
pr
en
di
m
ie
nt
o
so
br
e
ac
er
o,
N
/2
5
m
m
.
Re
si
st
en
ci
a
al
d
es
pr
en
di
m
ie
nt
o
so
br
e
ac
er
o,
N
/2
5
m
m
.
https://www.avient.com/sites/default/files/2021-12/Chemically Resistant Materials Whitepaper.pdf
D) Corresponding tensile data showing property
retention for treatment groups relative to their respective controls.
7© 2021 Avient Corporation, 33587 Walker Road, Avon Lake, Ohio USA 44012
The combination of visual observation and
mechanical properties afforded an ESCR rating
as described previously, which is summarized in
Table 3A for healthcare disinfectants and Table 3B
for common household/consumer disinfectants
tested in this study.
P.; Pollock, D.
A.; Cardo,
D.