Flat Round Particles :

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Flat Round Particles Pancake Shape Polymer
Particle
Softbeads Elastic Spherical Microbeads
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• Pancake Shape Polymer Particle
• Polyethylene

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Product Outline
Low-density Polyethylene (Other materials may
be available per request) Pancake shape polymer
particle (Mean particle size 11 to 13 µm)
Unique reflection characteristics
Intermediate light reflection/scattering
characteristics between spherical and flat
particles. Excellent smoothness
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Light Reflection
Intermediate light reflection/scattering
characteristics between spherical and flat
particles. Suitable use with moderate light
reflection when spherical beads provide too
matte appearance, or when flat shape powders
provide too glittering appearance.
Light Reflection Chart for Various Particles
(Test Results of Goniometer)
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Light Reflection
Reflected light is scattered in various
directions. (Scattering or diffused reflection)
Light reflects in narrower direction
range. (Limited scattering)
Light reflects out in the same direction as the
incidence angle . (Mirror reflection)
Spherical Beads
FLAT ROUND PARTICLE
Flat Particles (talc, mica, etc.)
Theoretical Images of Light Reflection for
Particle Shapes
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Particle Size Shape
Thickness
Diameter
Particle Size Distribution Mean particle size
11-13µm (Typical data)
Aspect ratio 3-5 (Observed in microscopic
pictures) Aspect ratio Diameter/Thickness
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Expectations in Cosmetic Application
Contributes smooth tactile associated with flat
round shape and material resin characteristics. Pr
ovides narrow range light scattering, which
allows moderate fogginess and gloss. Longer
lasting because of strong particle adhesion on
skin surface via nearly flat bottom shape of the
particles. Composed of various sizes of the
particles in a certain range. Effectively paste
skin wrinkles expecting better appearance of skin
texture. Improve tactile and appearance in solid
foundations, etc.
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Effect Example of cosmetics (Powder foundation)
Powder foundation with FLAT ROUND PARTICLE showed
advantageous comments of gloss, deeply
chiseled, and vividness relative to another
powder foundation with spherical beads among
female panelists in a sensory testing.
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• Elastic Spherical Microbeads
• Ethylene-Methyl Methacrylate Copolymer

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Product Outline
Ethylene-methyl methacrylate copolymer
(EMMA) Spherical polymer beads (Mean particle
size 10 to 12 µm) Soft and smooth beyond
silicone and polyurethane beads Two grades
available depending on softness Standard grade
SOFTBEADS A Super soft grade SOFTBEADS B
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Softness Compared with other beads
Force at 10 compression shows hardness of
SOFTBEADS is about 1/7 of poly(methyl
methacrylate) beads, and about 1/3 of Polyamide
beads.
Force at 10 Compression of Single Bead
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Softness Compared with Sumitomo Seikas
FLO-BEADS
SOFTBEADS is more elastic than our current
polymer microsphere FLO-BEADS.
Durometer Hardness of Sumitomo Seikas
Microsphere Materials
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Particle Size Distribution
SOFTBEADS A Mean particle size 11.0µm
(Representative data)
SOFTBEADS B Mean particle size 11.6µm
(Representative data)
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Applications
SOFTBEADS has unique smoothness associated with
softness of the material. Spherical shape
provides haze or fogginess based on its good
light scattering effect. SOFTBEADS is composed
of various sizes of the particles in a certain
range. The particles effectively paste skin
wrinkles expecting better appearance of skin
texture. SOFTBEADS is expected to improve tactile
and appearance in solid foundations, etc.
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Effect Example of cosmetics (Powder foundation)
Powder foundation with SOFTBEADS showed
advantageous comments of non-powdery, smooth
feel, and easy to smooth the powder out on
skin relative to another powder foundation with
Polyurethane beads among female panelists in a
sensory testing.