Polyvinyl Alcohol PVOH728F
Overview
PVOH 728F is a partially
alcoholized, low molecular
weight polyvinyl alcohol
(PVOH)
product, usually
appearing as light yellow
particles. It is specifically
designed for the production
of specialized
PVOH grades used in PVA films.
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Specifications
| Appearance
|
Nearly white spherical
particle |
| Solid
content(min)w/w%
|
98.0
|
|
Alcoholysis
(mole%)
|
72.5.0±1.0
|
| Degree of
polymerization
|
800±30.0
|
| PH
|
5.0-7.0
|
| Ash content
(Na2O)
max% |
0.3
|
Packing &
Storage
| Packing |
Our polyvinyl alcohol products
are packed in craft paper bag.
Net weight 12.5kgs or
20kgs if
floccule,
Net weight 25kgs /20kgs if
powder or Granule. |
| Storage |
Powder 20°C 2 years; Floccule
20°C 2 years. |
| Shipping |
Room temperature 5-30℃ in
China; may vary elsewhere |
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| Liwei PVA is one of the top 10
PVA factories and the top 100
strongest enterprises in anhui
province.In 2010,Liwei PVA is
evaluated as advanced and high
technical company. We mainly
deals in polyvinyl
alcohol,PVA,PVA fiber and raw
materials for producing PVA
like vinyl acetate.
|
| What is PVOH 728F?
For samples, pricing, or more
information, please call us at
0086-25-52397803
or mail
to info@china-pva.net
or fill out the
following form. We will
respond to you as soon as
possible.
|
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Frequently
Asked Questions
What is PVOH 728F?
PVOH 728F is a partially alcoholized,
low molecular weight polyvinyl alcohol
(PVOH) product,
usually
appearing as light yellow particles.
It is specifically designed for the
production of
specialized PVOH
grades used in PVA films. It has
excellent properties such as water
solubility,
transparency, heat
resistance, antistatic, etc., and has
a wide range of application prospects
in packaging,
agriculture,
medicine, and other fields.
What is PVOH 728F used for?
Packaging: PVOH 728F can be used in the
manufacture of water-soluble films,
which dissolve
quickly in
contact with water and are suitable
for industries requiring fast,
convenient, and
environmentally
friendly packaging, such as cosmetics,
food, and pharmaceuticals. PVOH 728F
can also be used
in the
manufacture of difficult-to-solve
films. These insoluble films can only
dissolve under
certain conditions,
making them ideal for packaging needs
that require product integrity and
stability over long
periods.
Agriculture: PVOH 728F can be used as
a seed coating material. The coated
seed can protect
the seed from
environmental factors, improve the
germination rate and growth quality of
the seed, and not
pollute the
soil. PVOH 728F can also be used to
manufacture pesticide carriers by
controlling the
pesticide release
rate and mode to improve the
effectiveness of pesticide use and
reduce the negative impact
on the
environment.
Pharmaceutical field: PVOH 728F can be
used as a component of a drug release
system. By
adjusting the
dissolution rate of the film and the
drug release mechanism, it is possible
to realize the
timed and
quantitative release of the drug and
improve the efficacy and safety of the
drug. In
addition, PVOH 728F
can also be used to manufacture
hygiene materials, such as disposable
medical packaging,
surgical gowns,
etc. Its excellent biocompatibility
and degradability can meet the
requirements of safety
and
environmental protection in the field
of medical and health care.
How is PVOH 728F packaged and stored?
Packaging: Sealed with materials with
moisture-proof properties, weight
25kg/bag.
Storage：The
storage place should be kept dry, cool
and ventilated, avoiding direct
sunlight and high
temperature.
How is PVOH 728F produced?
Polyvinyl alcohol (PVOH) resins and
other additives are mixed, heated to a
molten state and
extruded
through an extruder, which undergoes a
cooling and curing process to achieve
the desired
physical and
chemical properties, and finally cut
and packaged.
What are the safety precautions for the
use of PVOH 728F ?
PVOH 728F itself is a non-toxic,
odorless, non-polluting, and
environmentally friendly
product. However,
when using, appropriate protective
equipment such as masks and gloves
should be worn, and
the operating
instructions in the product manual
should be followed.
In addition, hazardous situations such
as fire or explosion may occur under
certain specific
circumstances, such as exposure to
high temperatures and sources of
ignition, so ensure that
the storage
environment is away from sources of
ignition and high-temperature areas.
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