TAC
Film Market is segmented on the basis of types, application, and
geographical region. TAC stands for tri-acetyl cellulose, also known as
triacetate, CTA, Cellulose triacetate. It is a chemical compound manufactured
from cellulose and a source of acetate esters, characteristically acetic
anhydride. It is classically used for the creation of fibers and film base. The
TAC film is a polymeric film in which all or a predominant portion of the film
is cellulose triacetate. Tri-acetyl cellulose (TAC) films are widely used as a
protective film for polarizers because it has high light transmittance, low
birefringence, high moisture permeability, high uniformity and good curling
property.
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Plasticizing agents have long
been known to increase the physical properties of solvent cast cellulose
triacetate (also called triacetyl cellulose or TAC) polymeric films. TAC
polymers have a cellulose chain backbone with varying degrees of acetylation.
TAC can range in substitution from approximately 2.4 to 3 acetyl substitution points
on the cellulose backbone. Other substitutions on the cellulose backbone could
be hydroxyl, propyl or butyl groups.TAC tends to be high in polymer molecular
weight. This is due to the enormously large cellulose chains it is formed from.
TAC cannot be thermally extruded, as it does not possess a melting point. TAC
is a very good polymer for forming amorphous polymer sheet.
The TAC film plays an active
role in optical compensation of LCDs as well as protection of polarizers. The
out-of-plane birefringence of the TAC film can be controlled by additives, and
the in-plane birefringence can be controlled by stretching. Coating a discotic
material on the TAC film gives a supplementary optical compensation layer. On
the basis of product types, the global market is classified into Thickness
50μm, 80μm, Thickness ranges from 80μm, 90μm, 150μm, 190μm, 240μm to 270μm,
Thickness of 30μm, 40μm.
On the basis of applications,
the global market is classified into TAC film for Polarizer (UV type and normal
type), TAC film for polarized sunglasses (with color or clear), TAC film for
insulation (with UV and without UV), photographic equipment filters, anti-glare
goggles, onboard vehicle navigation systems, as well as optical eyepieces and
lenses for polarizing microscopes and special medical purposes. Geographically,
the global market is segmented into North America, China, Europe, Southeast
Asia, Japan, and India. The key players in the TAC film market include
Fujifilm, Konica Minolta, Zeon, TacBrightOptronics Corp., HYOSUNG, IPI, Lucky
Group and Skinnovation.
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