2. ΔL Δa Δ
CIM H&C CIM H&C CIM H&C
0,57 0,76 0,99 1,42 1,67 2,33
0,31 0,74 0,53 1,02 0,97 1,52
0,59 0,78 0,61 0,81 1,09 3,12
Rate replication from the mold surface (%)
COMMENTS
Sa (µm)
VDI 18 (Ra=±0.80 µm)
%
Quality surface characterization:
1) Visible improvements using Roctool technology are observed: weld line are removed.
2) No improvement on the gloss value. However, we measured a small impact of the mold temperature on the color perception and Roctool
technology allows a darker color with a perfect surface finish compared to conventional process.
3) The different textured areas hightlight the positive impact on the replication using Roctool technology. Also, the different roughness are well
felt when touched. The roughness measurement carrie out using optical rugosimeter confirms the above with repliction rate of up to 97% : an
improvement of 202% with Roctool compared to conventional technology (CIM).
Note: CIM: Conventional Injection Molding.
Rev.: A
GLOSS RESULTS (ISO 2813 Standard)
T=80°C - Conventional - WITHOUT 101 GU 101 GUT=140°C - Roctool - WITH
TRADE NAME
0,15
05/10/2016 TRIAL # HDP-16-011 MOLD HD PLAQUE
MATERIAL
FAMILY PC
FORM
FOR-TEC-111
Page 1 of 3
QUALITY SURFACE CHARACTERIZATION REPORT
LEXAN™ GRADE 123R
DATE
DELTACOLOR SCALE
L* ( Lightness)
MEASUREMENTS
PROCESS TECHNOLOGY
0,09
T=140°C - Roctool - WITH
SUPPLIER SABIC
0,21
ΔE
COLOR
DIFFERENCE
LAB - COLOR DEPHT RESULTS (DIN 5033 Standard)
0,12
T=80°C - Conventional - WITHOUT
27,84 -0,12 -1,69
27,99
a*
-0,03
b*
-1,57
TEXTURE RESULTS - Ra (Amplitude roughnes parameter)
24357
32% 97%
202%
Volume cavity (µm3
)
Note: L* = 0 yields black and L* = 100 indicates diffuse white. a*: negative values indicate green while positive values indicate red. b*: negative values indicate blue and positive values
indicate yellow.
T=140°C - Roctool - WITHT=90°C - Conventional - WITHOUT
PICTURES OF INJECTED SAMPLES
3D TEXTURATION RESULTS
Conventional (µm3
) Roctool technology (µm3) Improvement (%)Roughness parameters
8071
%
VDI 27 (Ra=±2.20 µm)
40%33%
VDI 22 (Ra=±1.26 µm)
%
43%
Sa (µm)
Sa (µm)
LASER
57%
186%
139%
32% 33%
92%EDM
CHEMICAL
3. MEASUREMENT AREAS
1) The high gloss area framed in blue is the measurement area for the gloss,
color and specific roughness Rz* .
2) The red rectangle define the nano-replication area.
3) The green box correspond to the multi-textured (VDI) area were the
roughness is measured.
*Rz: Maximal amplitude roughness mesured for filled materials
ROUGHNESS MEASUREMENT PRINCIPLE
Optical rugosimeter is a measuring instrument used to measure a surface's
profile, in order to quantify its roughness.
In the context of HD Plastics™, two information are carried out using
Alicona equipment according to the standard ISO 4287:
- Replication rate : volume of the specific texture defined versus the one
textured on the mold surface quavity
- The surface roughness parameters : Arithmetical mean deviation (Ra)
which evaluate the roughness amplitude on a profile and Mean roughness
depth (Rz) which measure the maximal amplitude roughness average of the
profile.
GLOSS PRINCIPLE
FORM
FOR-TEC-111 Rev.: A
Page 3 of 3
QUALITY SURFACE CHARACTERIZATION REPORT
ANNEXES
LAB COLOR PRINCIPLE
The Lab color space describes all perceivable colors in the three dimensions
L for lightness and a and for the olor opponents green–red and
lue– ello .
In the context of HD Plastics™, a spectrophotometer is used to carried out
the LAB alue : spe tro-guide / gloss BYK . HD Plasti s™ is follo ing the
DIN 5033 Standard.
The graph shows the LAB color scale. The lightness, L*, represents the
darkest black at L* = 0, and the brightest white at L* = 100. The a* and b*
value represent the color channels. a*: negative values indicate green while
positive values indicate red. b*: negative values indicate blue and positive
values indicate yellow
Gloss is an optical property which indicates how well a surface reflects light
in a specular direction. It is one of important parameters that are used to
describe the visual appearance of an object. The factors that affect gloss are
the refractive index of the material, the angle of incident light and the
surface topography.
In the onte t of HD Plasti s™, a glossmeter is used to carried out the gloss
value with a incident angle of 60° : spectro-guide 45/0 gloss (BYK). HD
Plasti s™ is follo ing the ISO 8 Standard.
The graph shows the gloss scale using glossmeter following 60° angle in the
gloss unit. Low Gloss corresponds to a textured surface, Semi Gloss and
High Gloss to high polished surface.
White
L* = 100
Black
L* = 0
4. Sensor 1 Sensor 2 Sensor 1 Sensor 2 Sensor 1 Sensor 2 Sensor 1 Sensor 2 Sensor 1 Sensor 2 Sensor 1 Sensor 2
295 12,8 662,8 185 1044,4 423,2 445,4 205,2 873 471 1262 726,2
42,46%Pressure Drop (%) 95,66% 72,09% 59,48% 53,93% 46,05%
Sensors
Mold Pressure Avg
1500
CONVENTIONAL TECHNOLOGY (80°C) ROCTOOL TECHNOLOGY (160°C)
Pressure (Bar) 500 1000 1500 500 1000
PRESSURE DROP BETWEEN THE TWO PRESSURE SENSORS
FLOW LENGTH MEASUREMENT AT DIFFERENT IMM PRESSURE IMM PRESSURE DROP AT ISO FLOW LENGTH
_ _180°C _ _ _ 180°C _
61,5% 61,1% 49,6% 160°C -73,0%
-37,5% -40,0%140°C 30,8% 36,7% 34,8% 140°C -45,9%
PICTURES OF INJECTED SAMPLES
T=80°C - Conventional - WITHOUT (1000 Bar) T= 160°C - Roctool - WITH (1000 Bar)
10 12,5Pressure (Bar) 500 1000 1500 Flow Length (cm) 7,5
ROCTOOL TECHNOLOGY IMPROVEMENT VERSUS CONVENTIONAL TECHNOLOGY
Flow length improvement IMM Pressure improvement
-62,5% -57,1%160°C
TRADE NAME LEXAN GRADE 123R
MATERIAL
FAMILY PC SUPPLIER Sabic
DATE 05/10/2016 TRIAL # HDP-16-011 MOLD Spiral 1 mm
FORM
FOR-TEC-101 Rev.: A
Page 1 of 2
FLOW AND PRESSURE STUDY REPORT
Sensor 1
Sensor 2
Sensor 1
Sensor 2
5. COMMENTS
The HD Plastics™ characterizatio trials sho s a sig ifica t flo le gth a d pressure drop i pro e t. The opti u old te perature
is 160°C regarding to the trials performed with this material. We obtain the longest flow with an important reduction of the pressure drop
compared to the conventional mold temperature.
Note: Material stick to the mold up to 180°C.
Note : All the injection trials and the pressure measurements were carried out according to the protocol defined by RocTool.
All pressure data are measured using eDart system (RJG).
Flow Length improvement vs Injection Pressure in function of Mold Temperature/Mold Thickness
TRADE NAME LEXAN GRADE
FAMILY PC SUPPLIER Sabic
MATERIAL
123R
DATE 05/10/2016 TRIAL # HDP-16-011 MOLD Spiral 1 mm
FORM
FOR-TEC-101 Rev.: A
Page 2 of 2
FLOW AND PRESSURE STUDY REPORT
