- TOP
- Products
- HEPTAX (Multi-layered Nylon Film): Pinhole-resistant nylon for the frozen environment
Products
HEPTAX
(Multi-layered Nylon Film)
Product lineup
- “HEPTAX”, the complex nylon film of Gunze is a coined word of Greek “7 (HEPTA)” and “X” from COMPLEX.
- Sequential bio-oriented film, which can layer up to 5 types 7 layers.
01
Pinhole-resistant nylon for the frozen environment
Recently, cold chain(low temperature transportation network) has expanded for the purpose of extending the shelf life of food. However, because of the low temperature, the burden on the packaging is getting bigger.
- Advantage (layer composition)
- Physical characteristics comparison
- Proposal case
- Application
- HEPTAX (Pinhole-resistant nylon for the frozen environment)
- Heat-resistant temperature
- Associated product
Advantage (layer composition)
Added cold-resistant function to the conventional pinhole-resistant grade, which are barrier (type PF) and non-barrier (type PG). Selectable depending on the application.
- ①Strengthen pinhole-resistant: Effective in preventing all pinholes.
- ②Add cold-resistant: Maintains flexibility in freezing and refrigerating environments.
- ③Multi-layered: Add multiple functions by multi-layer technology.

Physical characteristics comparison
【PF】
Item | Unit | PF EVOH group |
HF EVOH group |
|
---|---|---|---|---|
Thickness |
μm |
15 |
15 |
|
Stick strength |
N |
13.1 |
9.6 |
|
Shock strength |
J |
1.3 |
1.0 |
|
Gelbo Flex |
Room temperature 1000 times |
Piece |
0.0.0 |
0.0.0 |
5℃ 1000 times |
0.0.0 |
2.3.3 |
||
-5℃ 1000 times |
0.0.1 |
7.11.12 |
||
New friction test |
Time |
500 |
300 |
|
Oxygen permeability |
※ |
13.8 |
18.6 |
- New unit: ml/m2 ・24HR・MPa (20℃×65%RH) Old unit conversion→ divided by 9.87

【PG】
Item | Unit | PG | General ONY | |
---|---|---|---|---|
Thickness |
μm |
15 |
15 |
|
Stick strength |
N |
13.0 |
11.6 |
|
Shock strength |
J |
1.35 |
1.26 |
|
Gelbo Flex |
Room temperature 1000 times |
Piece |
0.0.0 |
0.0.1 |
-25℃ 1000 times |
5.6.9 |
20.32.34 |
||
New friction test |
Room temperature |
Time |
500 |
350 |

Performance map

- This is an example based on our measurement results, so please be reminded that is not guaranteed.
Proposal case

Application
【PF】

【PG】

Pinhole-resistant nylon for the frozen environment
Type | Thickness (μm) |
Corona treatment |
Length (m) | Composition of layers | Features・Applications | |
---|---|---|---|---|---|---|
2000 | 4000 | |||||
PF |
15 |
Inside |
〇 |
〇 |
NY/NY/EVOH/NY/NY |
Barrier type resistant to pinholes and cold (Especially in the frozen/chilled filling and transportation) For meat, pizza, confectionery, etc. |
25 |
||||||
PG |
15 |
NY/NY/NY |
Resistant to pinholes and cold (Especially in the frozen filled packaging, degassed packaging) |
|||
25 |
- Please confirm size to sales person in charge
Heat-resistant temperature
Type | Boiled (Opened) | Semi-retort | |
---|---|---|---|
85℃×30 minutes |
100℃×60 minutes |
105℃×30 minutes |
|
PF | 〇 |
― |
― |
PG | 〇 |
〇 |
― |
- Attention: These are the evaluations of single film. Please contact person in charge before use.
Associated product
【Pinhole-resistant tube film for the frozen environment】
In addition to pinhole-resistant film HEPTAX, Gunze also develops tube film for the frozen environment.

*Gunze Kobunshi HP (https://www.gunze.co.jp/e/koubunshi/)
HEPTAX product list
HEPTAX product list can
be downloaded from here.