 POF 和PVC热缩膜的比较 |
该产品因其经济,环保,透明度高等特点,而正逐步取代传统热缩膜,如PVC,PE等.15mic的POF完全可以取代20-25mic的PVC,20mic的POF可以取代25-30mic的PVC,
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POF和PVC单位重量比较及其应用
应用 |
膜型 |
厚度 |
密度 |
克/㎡ |
㎡/公斤 |
包小体积物品:
电子,光盘,电池..... |
POF |
15μ |
0.922 |
13.83g |
72.31 |
PVC |
25μ |
1.4 |
35g |
28.57 |
包中体积物品:
奶,文具,日用品…….. |
POF |
20μ |
0.922 |
18.44g |
54.23 |
PVC |
30μ |
1.4 |
42g |
23.81 |
包大体积和各种集合小包装:
像框,工艺品,木地板 |
POF |
25μ |
0.922 |
23.05g |
43.38 |
PVC |
40μ |
1.4 |
56g |
17.86 |
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 ； |
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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 ℃ , does not goes hardened, can easy
and suitable used in frozen package.
Packed product free of deformation in long time preservation even
in -50 ℃ or 95 ℃ 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. |
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