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ASO Clean Poly Bag

Clean Poly Bag is a clean plastic bag with no visible foreign matter on the inner or outer surfaces. It has been certified to comply with the Japanese Pharmacopoeia and other standards, is cost effective, and can be widely used as an inner packaging bag for various applications, including the pharmaceutical applications.
 
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Major features
Clean
Highly clean
Standard size
Sterilized
Antistatic
UV protection
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Overview

Clean Poly Bag is a clean plastic bag with no visible foreign matter on the inner or outer surfaces. It has been certified to comply with the Japanese Pharmacopoeia and other standards, is cost effective, and can be widely used as an inner packaging bag for various applications, including the pharmaceutical applications.
Additive-free low density polyethylene (LDPE) is used as the raw material. Radical polymerization LDPE is used, which prevents particle formation in the product from bleed-out of additives (formation of agglomerated powder).

Standards compliance

Standards
Raw material
Food Sanitation Act (Japan)
Standards and criteria for food and food additives, etc.
Ministerial Ordinance on Milk and Milk products Concerning
Compositional Standards, etc.
Product
Japanese Pharmacopoeia
Polyethylene or poypropylene containers for aqueous injections.
※Some of the above test contents are excerpted and tested.

Heat-seal strength

The most common complaints about plastic bag products are defects such as "cuts" and "separation" in the sealed portions due to insufficient heat-seal strength. Our production equipment employs a unique "cut-and-seal method" that provides improved seal strength and stability compared to the conventional heat-seal method.
1st specimen
2nd specimen
3rd specimen
Both
ends
Center
Both
ends
Both
ends
Center
Both
ends
Both
ends
Center
Both
ends
Cut-and-seal
method
28.0
27.4
28.6
28.5
29.2
27.7
27.9
28.9
26.8
Conventional
sealing method
(hot plate
bottom seal)
20.8
19.1
19.7
21.2
19.6
22.0
20.1
19.2
21.0
[Test conditions]
1. Bag size: 0.1mm×550mm×770mm 2. Raw material: Additive-free LDPE 3. The seal strength was measured in three sealed portions of three specimens.
* The above figures are measured, not guaranteed, values.

Comparison of particles on the inner surface

Common materials for the manufacturing of plastic bags include "low density polyethylene (LDPE)" and "linear low density polyethylene (LLDPE)".

LDPE is a very pure polymer immediately after polymerization. The formation of additive particles is inevitable for LLDPE, which is produced by ion polymerization. However, in order to improve film productivity and efficacy of the bag manufacturing processes, an "antioxidant (BHT)," fatty acid-based "lubricant," silica-based "anti-blocking agent," and other additives are added in quantities of several hundred to several thousand ppm.

Therefore, after the inflation and bag manufacturing processes agglomerated powder starts to form on the inner and outer surfaces of the bag due to the bleed-out of these additives from inside the film. As these surfaces will come in contact with the packaged products, the biggest challenge in standard polyethylene is to prevent additive particles forming as they inevitably contaminate the products at the time of filling or packaging.

These particles continue to bleed out from the plastic film over time. For example, you may have seen white powder adhering to the surface of plastic bags stored for as long as a year. This is due to the bleed-out of these particles.

The following tables compare the numbers of particles measured on a standard plastic bag and our Clean Poly Bag. Relatively new plastic bags produced about one week before testing were selected.

Standard L-LDPE bag
(0.1mm×500mm×850mm)
Particle size
2μm
3μm
5μm
10μm
25μm
40μm
Blank water
Measured value
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
Maximum
1
1
1
0
0
0
Average
1
0
0
0
0
0
Minimum
0
0
0
0
0
0
Product
Measured value
130,703
81,503
9,770
757
24
6
125,758
78,065
10,304
1,264
53
12
131,156
82,304
10,928
1,466
60
8
Maximum
131,156
82,304
10,928
1,466
60
12
Average
129,206
80,624
10,334
1,162
46
9
Minimum
125,758
78,065
9,770
757
24
6
Clean Poly Bag
(0.1mm×500mm×720mm)
Particle size
2μm
3μm
5μm
10μm
25μm
40μm
Blank water
Measured value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Maximum
0
0
0
0
0
0
Average
0
0
0
0
0
0
Minimum
0
0
0
0
0
0
Product
Measured value
100
66
14
1
0
0
101
66
14
0
0
0
94
63
10
0
0
0
Maximum
101
66
14
1
0
0
Average
98
65
13
0
0
0
Minimum
94
63
10
0
0
0
※The above figures are measured, not guaranteed, values.

Production environment

This product is produced in an ISO class 6 (class 1000) cleanroom.
In the production environment, bacteria inspections (falling and airborne) are conducted periodically. The products are also periodically inspected for microorganisms. Our workers wear clothing that completely covers the skin. Thus, we take all possible measures to ensure that the bags are suitable for use as packaging for pharmaceuticals or semiconductor devices.
Microorganism inspection
(1)Falling bacteria inspection (Koch method)
Measurement area
General bacteria
Fungi
A
0
0
B
0
0
C
0
0
(2)Airborne bacteria inspection (80 in 320 L)(Number of colonies/L)
Measurement area
General bacteria
Fungi
Viable bacteria count
Area A
0.0000
0.0000
0.0000
Area B
0.0000
0.0000
0.0000
(3)Product inspection; washout method (2000cm3)
Product name
General bacteria
Fungi
Clean Poly Bag
(0.1mm×550mm×700mm)
0
0

Packaging

Packaging is an important factor in maintaining the cleanliness of clean plastic bags. As the inner packaging bag of clean bags, which comes in contact with them, we use a clean bag of the same material to keep them clean. We can also deliver our clean bags in double or triple inner packaging so that they can be unpackaged in order in an anteroom.

As the outmost package, "UV Cut Clean Cloth Sheet" is used. With its excellent shock resistance, "UV Cut Clean Cloth Sheet" protects Clean Poly Bags in transit securely. This UV protection sheet cuts 99% of 380 nm and shorter wavelengths, which promote ultraviolet degradation, and protects plastic bags in storage from degradation by ultraviolet light from ultraviolet germicidal lamps.

The combustion catalysis effect of the sheet makes it an environmentally-friendly, hybrid packaging material that, when incinerated, inhibits the production of dioxins from other waste (of course, this product does not produce dioxins) or reduces NOX in exhaust gas.

Inner packaging method
Outer packaging
method
Clean
Poly
Bag
The product is put in a Clean Poly Bag and vacuum sealed
(both single and double packaging available)
Wrapping in UV Cut
Clean Cloth Sheet

Film properties

Measurement item
0.05mm
0.1mm
Measurement method
Tensile strength
[N/mm3]
MD
28.9
28.0
JIS Z-1702
TD
18.9
22.9
Tensile elongation
[%]
MD
233
271
JIS Z-1702
TD
629
642
Tear strength
[N/mm]
MD
99.0
29.4
JIS K-7128
TD
56.2
37.9
Seal strength
[N/10mm]
9.1
19.5
Our measurement method
Oxygen permeability
[ml/m2・24hr・Mpa]
38996
19701
JIS K-7126
Water vapor permeability [g/m2・24hr]
9.23
4.72
JIS Z-0208
※The above figures are measured, not guaranteed, values.

Size/Specifications

This product is available in custom sizes.

We produce this product to suit your application.
Feel free to contact us.
Unfortunately, we cannot answer any telephone inquiries.
If you have any questions, please contact us through the website and we will reply to your inquiry by e-mail.
Thank you for your understanding.