2. ΔL Δa Δ
CIM H&C CIM H&C CIM H&C
0,82 0,95 1,23 1,52 1,67 2,33
0,42 0,58 0,64 0,92 1,3 1,82
0,65 0,76 0,76 0,91 _ 2,76
Note: CIM: Conventional Injection Molding. H&C: Heat and cool (Roctool)
COMMENTS
Quality surface characterization:
1) Visible improvements using Roctool technology are observed: weld line and sink marks are removed.
2) Significant improvement on the gloss value up to 120%. However, we measured an impact of the mold temperature on the color perception and Roctool technology
allows a darker color (ΔL 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 roughnesses are well felt when touched. The
roughness measurement carried out using optical rugosimeter confirms the above with repliction rate of up to 89% : an improvement of 57% with Roctool compared to
conventional technology (CIM).
LASER 17% 20% _ Sa (µm)
EDM 38% 44% 40% Sa (µm)
CHEMICAL 16% 24% 40% Sa (µm)
TEXTURE RESULTS - Ra (Amplitude roughnes parameter)
VDI 18 (Ra=±0.80 µm) VDI 22 (Ra=±1.26 µm) VDI 27 (Ra=±2.20 µm)
% % %
Volume cavity (µm
3
) 14245 22383
57%
Rate replication from the mold surface (%) 57% 89%
3D TEXTURATION RESULTS
Roughness parameters Conventional (µm3
) Roctool technology (µm3) Improvement (%)
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. ΔE>0,2 usual color tolerance.
PICTURES OF INJECTED SAMPLES
T=50°C - Conventional - WITHOUT T=140°C - Roctool - WITH
-0,02 0,12 0,49
T=140°C - Roctool - WITH 26,3 -0,10 -1,54
T=50°C - Conventional - WITHOUT 26,77 -0,12 -1,42
0,47
LAB - COLOR DEPHT RESULTS (DIN 5033 Standard)
MEASUREMENTS
PROCESS TECHNOLOGY
COLOR SCALE DELTA COLOR
L* ( Lightness) a* b* ΔE
GLOSS RESULTS (ISO 2813 Standard)
T=50°C - Conventional - WITHOUT 32.5 GU T=140°C - Roctool - WITH 72.8 GU
HD PLAQUE
MATERIAL
FAMILY PP MF10 SUPPLIER LUXUS
DATE 04/10/2016 TRIAL # HDP-16-009 MOLD
FORM
FOR-TEC-111 Rev.: A
Page 1 of 2
QUALITY SURFACE CHARACTERIZATION REPORT
Hycolene™ GRADE 16818TRADE NAME
C
C
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 frame correspond to the multi-textured (VDI) area were the roughness is
measured.
*Rz: Maximal amplitude roughness mesured for filled materials
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– ellow.
In the context of HD Plastics™, a spectrophotometer is used to carried out the LAB value :
spe tro-guide /0 gloss BYK . HD Plasti s™ is following the DIN 0 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
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.
ANNEXES
GLOSS PRINCIPLE
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
in ident angle of 0° : spe tro-guide /0 gloss BYK . HD Plasti s™ is following the ISO
2813 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.
LAB COLOR PRINCIPLE
FORM
FOR-TEC-111 Rev.: A
Page 2 of 2
QUALITY SURFACE CHARACTERIZATION REPORT
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
481,2 337 1002,8 805,6 1516,2 1279 501,8 418,4 1021,6 914 1542 1386,6
Sensors
SUPPLIER
Mold Pressure Avg
Pressure Drop (%)
PRESSURE DROP BETWEEN THE TWO PRESSURE SENSORS
CONVENTIONAL TECHNOLOGY (30°C) ROCTOOL TECHNOLOGY (140°C)
Pressure (Bar) 500 1000 1500 500 1000 1500
35
-58,3% -42,4%
29,97% 19,66% 15,64% 16,62%
FLOW LENGTH MEASUREMENT AT DIFFERENT IMM PRESSURE IMM PRESSURE DROP AT ISO FLOW LENGTH
20,3% 100°C
500 1000 1500 Flow Length (cm) 15 25
120°C 50,9% 45,1% 36,2% 120°C -62,5%
-53,2%
Flow length improvement IMM Pressure improvement
T=140°C - Roctool - WITH (1000 Bar)
LUXUS LTD
100°C 27,4% 24,5% -31,3% -29,8% -26,3%
Pressure (Bar)
T=30°C - Conventional - WITHOUT (1000 Bar)
PP
140°C 76,0% 67,5% 54,3% 140°C -68,8% -61,3%
10,53% 10,08%
FORM
FOR-TEC-101 Rev.: A
Page 1 of 2
FLOW AND PRESSURE STUDY REPORT
ROCTOOL TECHNOLOGY IMPROVEMENT VERSUS CONVENTIONAL TECHNOLOGY
TRADE NAME Hycolene™ GRADE 16818
PICTURES OF INJECTED SAMPLES
TRIAL # HDP-16-009 MOLD Spiral 1 mm
MATERIAL
FAMILY
08/09/2016DATE
Sensor 1
Sensor 2
Sensor 1
Sensor 2
5. FORM
FOR-TEC-101
Flow Length improvement vs Injection Pressure in function of Mold Temperature/Mold Thickness
MATERIAL
FAMILY SUPPLIER
TRADE NAME
Rev.: A
Page 2 of 2
FLOW AND PRESSURE STUDY REPORT
DATE 08/09/2016 TRIAL # HDP-16-009 MOLD Spiral
PP LUXUS LTD
Hycolene™ GRADE 16818
The HD Plastics™ characterization trials shows a significant flow length and pressure drop improvment. The optimum mold temperature is
140°C according to the trials and characterization performed with Hycolene. We obtain at high mold temperature a longest flow with an
important reduction of pressure drop compared to conventional mold temperature.
COMMENTS
Note: All the injection trials and the pressure measurements were carried out according to the protocol defined by RocTool (injection process, 2 heating sides,
cold sprue, mold design).
All pressure data are measured using eDart system (RJG).
