2. ΔL Δa Δ
Rate replication from the mold surface (%)
Rev.: A
GLOSS RESULTS (ISO 2813 Standard)
T=65°C - Conventional - WITHOUT 104,9 GU 104,4 GUT=140°C - Roctool - WITH
TRADE NAME
0,18
18/01/2018 TRIAL # HDP-17-025 MOLD HD PLAQUE
MATERIAL
FAMILY PBT
FORM
FOR-TEC-111
Page 1 of 3
QUALITY SURFACE CHARACTERIZATION REPORT
Ultradur® GRADE XA-7455
DATE
DELTACOLOR SCALE
L* ( Lightness)
MEASUREMENTS
PROCESS TECHNOLOGY
-0,06
T=140°C - Roctool - WITH
SUPPLIER BASF
0,47
ΔE
COLOR
DIFFERENCE
LAB - COLOR DEPHT RESULTS (DIN 5033 Standard)
-0,43
T=65°C - Conventional - WITHOUT
26,92 0,09 -0,27
27,1
a*
0,03
b*
-0,7
20453
70% 82%
17%
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.
Roughness profile - Conventional VS Roctool Technology
T=140°C - Roctool - WITHT=65°C - Conventional - WITHOUT
PICTURES OF INJECTED SAMPLES
3D TEXTURATION RESULTS
T=65°C - Conventional - WITHOUT T=140°C - Roctool - WITH
Conventional (µm3
) Roctool technology (µm3
) Improvement (%)Roughness parameters
17454
Sink mark
Weld line
C
C
3. CIM H&C CIM H&C CIM H&C
0,9 1,12 1,48 1,55 2,24 2,26
0,78 0,93 1,15 1,34 1,72 1,96
0,84 0,89 1,01 1,08 1,87 2
COMMENTS
Sa (µm)
VDI 18 (Ra=±0.80 µm)
%
Quality surface characterization:
1) Visible improvements using Roctool technology are observed: weld line and sink marks are removed.
2) No significant improvement on the gloss value. However, we measured an impact of the mold temperature on the color perception and
Roctool technology allows a darker color compared to conventional process.
3) The different textured areas hightlight the positive impact on the replication using Roctool technology.
Visually, the textures are more perceptible due to the improvement of light diffraction. Also, the different roughness is felt when touched.
The roughness measurements carrie out using optical rugosimeter confirms above with repliction rate up to 82% : improvement of 17% with
Roctool compared to conventional technology (CIM).
Note: CIM: Conventional Injection Molding. H&C: Heat and Cool (Roctool)
FORM
FOR-TEC-111 Rev.: A
Page 2 of 3
QUALITY SURFACE CHARACTERIZATION REPORT
%
VDI 27 (Ra=±2.20 µm)
1%24%
VDI 22 (Ra=±1.26 µm)
%
5%
Sa (µm)
Sa (µm)
LASER
14%
7%
19%
1% 7%
17%EDM
CHEMICAL
TEXTURE RESULTS - Ra (Amplitude roughnes parameter)
4. 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
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
di e sio s L for light ess a d a a d for the olor oppo e ts gree –red
a d 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
following 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.
I the o te 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 i g the ISO 8 Sta dard.
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
