 Comparison
POF with PVC |
Due to its price, high quality
and environmental friendliness, polyolefin film is replacing
other heat shrinkable film (e.g. PVC heat shinkable film
),
Characteristics and price comparison between POF film and PVC film |
weight per area
unit comparison between POF film and polyvinylchloride(PVC)
application |
film type |
thickness |
despecific density |
weight per squane
metre |
area per kilogram |
small volume item
packaging, e.g. |
POF film |
15¦Ì |
0.922 |
13.83g |
72.31m 2 |
PVC
film |
25¦Ì |
1.4 |
35g |
28.57m
2 |
electronics, video
tape, etc. |
POF film |
20¦Ì |
0.922 |
18.44g |
54.23m 2 |
PVC
film |
30¦Ì |
1.4 |
42g |
23.81m
2 |
medium volume item
packaging, e.g. book pharmacenticles statimany |
POF film |
25¦Ì |
0.922 |
23.05g |
43.38m 2 |
PVC
film |
40¦Ì |
1.35 |
56g |
17.86m
2 |
note:Due to excellent features
of
P.O.film, 15 micron thick PO film can be the replacement of 20-25
micron thick PVC film £»
20 micron thick PO film can be the replacement of 25-30 micron
thick PVC film £»
25 micron thick PO film can be the replavement of 35-50 micron
thick PVC film £» |
|
Comparision between
the physical propertise of POF and PVC
|
POF |
PVC |
cost |
Lower physical unit
cost, specific gravity of 0.92, the minimum thickness
go as little as 0.012mm. |
Higher physical unit
cost. for its specific gravity go as high as
1.4. The minimum thickness can only be as 0.018-0.02 |
properties |
Thin & tenacious
with even thickness soft and optimal humidity-resistant.
High tensible and tear-resistant strength Shrink rate can be easy
adjusted.
Knead-resistant is good as LLDPE be Used. |
Thick & fragile,
uneven thickness & poor in humidity-resistant
.
Low tensile strength, low shrink rate.
Knead-resistant is worse. |
value |
Optimal cold resistance
ever at -50 ¡æ , does not goes hardened, can easy
and suitable used in frozen package.
Packed product free of deformation in long time preservation even
in -50 ¡æ or 95 ¡æ atmosphere. |
Poor cold-resistance
as it goes hardened in winter or when frozen
tends to break during transport.
Unevenly shrinkage with long-time preservation, packing products
goes deformed.
Without anti-static treatment,dust would be accumulated. |
processing |
No moisture produced
in the packing process, does not create stick
sealing-blade easy mainten- ance & operation
for packing machinery.
Easy used in auto packing line of high speed. |
Moisture produced
and stick sealing-blade created in the packing-process,easy
to cause damaged machinery and need more time
for maintenace.
Just suitable for packing line of low speed. |
safety |
After shrink packing,
sealing edges remain soft & harmless, can
hold on kneading. |
After the shrink
packing, sealing edges tends to be sharpened
and harmful to hands of fingers. |
public harzard |
Non-toxic, no toxic
gased are produce in heat-seal process, it accord
with American tandard of FDA & USDA. |
Toxic during the
heat-sealing Odor and oxious gases will be produced,
forbidden to use in ear future. |
|
|
|
