2. ΔL Δa Δb
CIM H&C CIM H&C CIM H&C
0,69 0,85 1,18 1,5 2,04 2,47
0,37 0,63 0,66 0,79 1,30 1,55
0,62 0,79 0,71 0,93 1,40 2,26
FORM
FOR-TEC-111 Rev.: A
Page 1 of 2
QUALITY SURFACE CHARACTERIZATION REPORT
ABS 4134 GRADE _TRADE NAME
GLOSS RESULTS (ISO 2813 Standard)
T=50°C - Conventional - WITHOUT 52.9 GU T=140°C - Roctool - WITH 84.5 GU
HD PLAQUE
MATERIAL
FAMILY ABS SUPPLIER MBA
DATE 07/09/2016 TRIAL # HDP-16-007 MOLD
LAB - COLOR DEPHT RESULTS (DIN 5033 Standard)
MEASUREMENTS
PROCESS TECHNOLOGY
COLOR SCALE DELTA
COLOR
DIFFERENCE
L* ( Lightness) a* b* ΔE
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
-0,05 0,09 0,30
T=140°C - Roctool - WITH 28,23 -0,01 -1,35
T=50°C - Conventional - WITHOUT 28,51 -0,06 -1,26
0,28
Volume cavity (µm
3
) 11377 24684
117%
Rate replication from the mold surface (%) 45% 98%
3D TEXTURATION RESULTS
Roughness parameters Conventional (µm3
) Roctool technology (µm3) Improvement (%)
CHEMICAL 23% 27% 21% 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)
% % %
LASER 27% 31% 61% Sa (µm)
EDM 70% 20% 19% Sa (µm)
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 60%. However, we measured an 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 roughnesses are well felt when touched. The
roughness measurement carried out using optical rugosimeter confirms the above with repliction rate of up to 98% : an improvement of 117% with Roctool compared to
conventional technology (CIM).
C
C
3. FORM
FOR-TEC-111 Rev.: A
Page 2 of 2
QUALITY SURFACE CHARACTERIZATION REPORT
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
White
L* = 100
Black
L* = 0
