EHAr – BOPA Film with High Barrier Performance
EHAr is specially designed and produced in state-of-the-art LISIM simultaneous stretching process. Fresh-locking products have ultra-high barrier property. Its composite application with food packaging materials can reduce the use of additives, extend the shelf life, lock freshness and preserve fragrance, and are key materials to promote healthy upgrading of foods and reduce food waste.
EHA has good tensile strength and rubbing resistance contrast to PVDC film, such as KNY, alumina/ silicon oxide with vaccumn metalized. It can maintain the same superior oxygen barrier effect after repeated rubbing. EHA has high transparency and its film color would not have obvious change with time. The color of EHA will not change significantly with time. During incineration, it will not produce dioxins or toxic gases containing chlorine.
| Features | Benefits |
| ✦High gas/aroma barrier | ✦Extend shelf life, better freshness |
| ✦High mechanical strength and puncture/impact resistance | ✦Capable of packing heavier/larger products, rigid or sharp bone-in products |
| ✦Good dimensional stability ✦No barrier loss upon film deformation ✦Thin but multi-functional |
✦Accurate reverse printing ✦Stable barrier ✦Cost effective |
| Type | Thickness/μm | Width/mm | Treatment | OTR/cc·m-2·day-1
(23℃, 50%RH) |
Retortability | Printability |
| EHAr | 15 | 300-2100 | single/both side corona | < 8 | 100℃ pasteurization | ≤ 12 colors |
Notice: Retortability and printability are depending on customers’ lamination and printing processing condition.
| Performance | BOPP | KNY | EHA |
| OTR(cc/㎡.day.atm) | 1900 | 8-10 | ＜ 2 |
| Surface Color | Transparency | With light yellow | Transparency |
| Puncture Resistance | ○ | ◎ | ◎ |
| Lamination Strength | ◎ | △ | ◎ |
| Printability | ◎ | △ | ◎ |
| Environment-friendly | ◎ | × | ◎ |
| Soft Touching | △ | ◎ | ◎ |
Bad × it’s OK △ quite good ○ excellent ◎
EHAr is a transparent, high-barrier functional film. It’s heat-resistant to 100℃ boiling, OTR lower than 8 CC/m2.d.atm. Comparing with the conventional BOPA films, the oxygen resistance performance of EHAr is ten times better, which makes it very suitable for the packaging that has strict requirement in gas barrier, such as meat products, pickles and compound condiments.
Deviation of Upper and Lower Printing Position
Causes:
● The selection of nylon film is wrong and the product type does not match the printing requirements.
● One side can be aligned, and the color group behind the other side gradually shifts inward
● High temperature and humidity in printing environment lead to rapid moisture absorption and expansion of nylon.
●Too slow printing speed leads to moisture absorption of BOPA
Suggestions:
✔ It is recommended to use the temperature (23°C ±5°C) and humidity (≤75%RH). If the relative humidity exceeds 80%, stop using.
✔ Properly increase the tension, improve the printing speed of more than 60m/min for manual overprinting;
✔ Ensure printing speed up to 160m/min.
