Site map | Japanese site
Please read.
TOP What is Techpolymer? Optics Cosmetics Paint and ink Film New applications Inquiry
What is Techpolymer?
What is Techpolymer?
Nonspherical polymer particle
Upgrading of Techpolymer's functions
Introduction of products
Contact information
Inquiry form
n Functional Polymer Group
phone: +81-3-3347-9613(Tokyo)

Nonspherical polymer particle

Using our own shape-control technology, we succeeded in producing nonspherical particles in the shape of biconvex lenses.
When the product is used as a light diffuser for optical film, it can provide a higher whole light transmittance than spherical particles. Besides higher haze and transmittance, it can decrease the gloss of the film.

Successful production of biconvex lens-shaped particles


Using our own shape-control technology,
we succeeded in producing particles in the shape of biconvex lenses.

Spherical particles


Composition: cross-linked polymethyl methacrylate
Mean particle size: 3 - 12 μm (converted to spherical diameter)
Shape: biconvex lens
Aspect ratio: 1.2 - 1.8

*The mean particle size and aspect ratio are controllable in the above ranges.

↑ Size distribution


Inquiry

Applications and features

n Coating film

Optical properties of coated film (Formulation A)
  Haze (%) Whole light transmittance (%)
LMX series
(Maximum diameter: 12 μm)
93.3 86.3
Spherical particles
(Mean particle size: 12 μm)
93.8 79.1
* Haze and whole light transmittance were measured according to JIS K7105.
(Haze meter: Nippon Denshoku)
Nonspherical particles, when used as a light diffuser, provides higher whole light transmittance and lower the loss of light compared to spherical particles. The whole light transmittance increase about 7%.

Formulation of coating solution (Formulation A)
Particles 20 wt parts
Acrylic binder 20 wt parts
Solvent 60 wt parts


Diffused light intensity was continuously measured in the range from -80 to 80 degrees using a goniophotometer.
(* The data are examples of measurements.)
Nonspherical particles, when used as a light diffuser, cause higher light diffusion, thereby providing more uniform and brighter light than spherical particles.

n Haze and whole light transmittance

Optical properties of coated film (Formulation A)
 
Haze (%)
Whole light transmittance (%)
LMX series
(Maximum diameter: 5 μm)
69.7 88.8
Spherical particles
(Mean particle size: 5 μm)
53.0 86.8
* Haze and whole light transmittance were measured according to JIS K7105.
Nonspherical particles, when used as a light diffuser, cause higher haze and whole light transmittance than spherical particles. (* The data are examples of measurements.)

Formulation of coating solution (Formulation B)
Particles 4 wt parts
Acrylic binder 20 wt parts
Solvent 76 wt parts

n Gloss and intensity of reflected light

1) Reflection properties of light
Reflected light was measured in a range of 0 - 90 degrees.
  3) Intensity of reflected light

2) Gloss

Reflectance of 60 degrees reflected light was measured.
* The gloss was measured according to JIS Z8741.

  Gloss (%)
LMX series
(Maximum diameter: 5 μm)
24.5
Spherical particles
(Mean particle size: 5 μm)
41.5
* Haze and whole light transmittance were measured according to JIS K7105.
(Haze meter: Nippon Denshoku)
Regular light reflection on the diffusion layer surface is lower in nonspherical particle-applied film than in spherical particle-applied film. The gloss in the direction of regular reflection decreases 17%. (* The data are examples of measurements.)

n Light reflecting properties of particles



Inquiry

What is Techpolymer? Nonspherical polymer particle Upgrading of Techpolymer's functions Introduction of products
Policy on protecting and using personal information
This home page is provided by Sekisui Plastics Co., Ltd.
Copyright(C)2005 SEKISUI PLASTICS CO., LTD.