Gas Permeability BOPP Film
PORO FRESH
[
INTRODUCTION
]
A gas permeability film "PORO
FRESH" is composed of PP as a base
material and is a transparent film that has allout
gas permeability of a film.
MA wrapping of vegetables and fruits,we think that they
can propse it for a various use to need a control
of permeability of gas also.
About an existing ventilation film, technology to open
a hole after they made a film generally was applied.
Then,though it is necessary finely to control
a diameter and a number of a hole,we don't perform processing
that "PORO FRESH" opens a hole at all.
Therefore,as it makes a balance good and compatible airtightly
and gas gas permeability,we attain low bocoming
cost also. And, because "PORO
FRESH" isn't a type to mix a filler,
a strength and a transparency of the film become
a property near a general BOPP.
[
CHARACTERISTICS ]
All-out
gas permeability
There is a permeability performance on a portion of a
film throat.
Low
cost
Principal ingredients of a film is PP, and because making
it have permeability without a process to open
a hole,it reduces the cost that was a weak point
of a ventilation film.
Laminating
aptitude
It can laminate with sealant materials,because there
is all-out gas permeability.
[
GRADE
]
| Grade | Thickness | Corona Treated | Type |
| PORO-FL | #15 #20 | One-side | Lamination |
| PORO-FH | #15 | One-side | Heat Sealable |
| PORO-F | #25 #30 | Both-sides | Anti-Fogging |
[
APPLICATION
]
*Freshness-keeping wrapping for vegetables and fruits.
(for rotting prevention)
*Deoxidation agent, mold prevention agent wrapping.
*As polystyrene, vinyl chloride substitution materials.
*Cover of a sake without gas of fermentable foods.
*For transpiration control of a volatile liquid.
(alcohol and a flagrant ingredient)
*Cover of a sublimation substance. (such as insecticides)
[
SPECIFICATION
]
Please refer to a next sheet.
[
APPENDIX ]
Permeability of each gas molecular weight, a strength
of a polarity,temperature,humidity,concentration,
and dispersion it changes.Please inquire it separately,about
the kind expect gas that we showed to a lower
table. And, in order to utilize a permeability
performance at most, for what you select to a high
permeablity material (such as PE) for sealant we advise it. Please
set up it thinly even grade that a difficulty isn't on processing
in case of other materials.
[
GAS
TRANSMISSION RATE ]
| properties | F L | F H | F | |||
| Gas permeability | Thickness | #15 | #20 | #15 | #25 | #30 |
O2
* |
4400 | 3200 | 3900 | 3000 | 2300 | |
| CO2
* |
16900 | 12800 | 15300 | 11000 | 8900 | |
| H2O *2 | 26.0 | 20.8 | 23.8 | 20.2 | 16.0 | |
| C2H4
* |
2500 | 2000 | 2200 | 1900 | 1500 | |
*
unit : nmol/m2.s.100kPa(23
,
0%RH)
* 2 unit : g/m2.day(40,
90%RH)
Chart for Property Comparison with Taiko Drawn Polypropylene Film
PORO
FRESH
(Gas
Permeability BOPP Film)
| Measured item | Units | Name | PORO-FL | PORO-FH | PORO-F | Measurement standard |
| Type | Exclusively for lamination | Individual use | Dual surface anticlouding | |||
| Thickness |  |
20 | 15 | 25 | JIS K 7130 | |
| Haze | % | 2.4 | 2.6 | 2.9 | JIS K 7105 | |
| Dynamic coefficient of friction | ( ) |
1* | 0.27 | 0.26 | 0.28 | JIS K 7125 |
| 2* | 0.34 | 0.34 | 0.28 | |||
| Tension breakage strength | MPa | MD | 178 | 170 | 155 | JIS K 7127 |
| TD | 210 | 200 | 187 | |||
| Tension breakage/stretching | % | MD | 180 | 175 | 160 | JIS K 7127 |
| TD | 70 | 70 | 90 | |||
| Elasticity of tension | GPa | MD | 1.50 | 1.45 | 1.23 | JIS K 7127 |
| TD | 2.70 | 2.60 | 2.56 | |||
| Heat bonding temperature | 300gf/15mmwidth |
1* | - | - | 146 | In-house Method |
| 2* | - | 126 | 146 | |||
| Static prevention | % (10kV,30sec) |
1* | 15 | 15 | 100 | In-house
Method (Rate of Attenuation Method) |
| 2* | 0 | 0 | 100 | |||
| Anticlouding |     (vapor,1min) |
1* | |
|
|
In-house Method |
| 2* | |
|
|
|||
| Remarks | 1* | Corona processing | Corona processing | Anticlouding processing | Roll internal surface | |
| 2* | Unprocessed | Heat-seal surface | Anticlouding processing | Roll external surface | ||
<Gas Permeability of Film>
| Measured item | Measurement conditions | PORO-FL #15 |
PORO-FH #15 |
PORO-F #25 |
Anticlouding OPP 25  |
|
| Gas permeability | O2
* |
23,
Differential pressure method |
3200 | 3900 | 3000 | 1010 |
| CO2
* |
23,
Differential pressure method |
12800 | 15300 | 11000 | 2860 | |
H2O
*
|
40,
90% RH |
20.7 | 23.8 | 20.2 | 8.0 | |
| * |
23,
0% RH |
2000 | 2200 | 1900 | 390 | |
*
: nmol/m2.s.100
kPa
* : g/m2.day
[Precautions]
1)With regard to FL and FH, the respective #15 and #20F
will be the #25 and #30 lineup for use with agricultural produce.
2)The
above values for properties are typical values measured under specific conditions
( 23 ,
50% RH ) and are not standard values.
3)Please consult us separately for permeability with
regard to other gases.