ALOX BOPP
One gauge, 18 µm, in two grades. A is the printing grade: a protective coat over the oxide, printable and laminatable. B is the lamination grade: the same barrier, no protective coat, laminate only. Both keep the pack clear and the structure in the PP stream.
- Stream
- PP
- Thickness
- 18 µm
- OTR (grade A)
- ≤ 1 (typ. 0.63) cm³/(m²·24h)
- Grades
- A print · B laminate
Specification
Two grades, one construction. Base film, AlOx layer and test methods are the same; the protective coating is the only difference. A carries it, so A is specified for printing and lamination. B carries none, so B is specified for lamination only.
| Property | Method · unit | ALOX BOPP-A (printing grade) | ALOX BOPP-B (lamination grade) |
|---|---|---|---|
| Thickness | GB/T 6672 · µm | 18 · typ. 18.2 | 18 · typ. 18.0 |
| Density | — · g/cm³ | 0.9 · typ. 0.9 | 0.9 · typ. 0.9 |
| Tensile strength, MD | GB/T 1040.3 · MPa | ≥ 120 · typ. 145 | ≥ 120 · typ. 138 |
| Tensile strength, TD | GB/T 1040.3 · MPa | ≥ 200 · typ. 233 | ≥ 200 · typ. 224 |
| Elongation at break, MD | GB/T 1040.3 · % | ≤ 250 · typ. 232 | ≤ 250 · typ. 230 |
| Elongation at break, TD | GB/T 1040.3 · % | ≤ 65 · typ. 42 | ≤ 65 · typ. 46 |
| Haze | GB/T 2410 · % | ≤ 2 · typ. 1.59 | ≤ 2 · typ. 1.39 |
| Wetting tension, AlOx face | GB/T 14216 · mN/m | ≥ 38 · typ. 48 | ≥ 38 · typ. 42 |
| Oxygen transmission (OTR) | GB/T 19789 / ASTM D3985 · 23 °C / 0 % RH · cm³/(m²·24h) | ≤ 1 · typ. 0.63 | ≤ 2 · typ. 1.29 |
| Water vapour transmission (WVTR) | GB/T 26253 / ASTM E398 · 38 °C / 90 % RH · g/(m²·24h) | ≤ 1 · typ. 0.89 | ≤ 2 · typ. 1.32 |
Supply
- Roll width
- Up to 3,000 mm slit to requested width
- Outside diameter
- 440 mm max
- Standard roll length
- 6,000 m
- Core
- Ø76 / Ø152 mm
- Yield
- ≈ 61 m²/kg calculated at 18 µm
- Minimum order
- 1 roll
- Lead time
- 10–15 days by width
How it runs
The coating sets the process, not just the barrier. A prints; B laminates. The notes below are the points converters ask about first, and the qualification trial is where they get confirmed on your line.
- Printing
- Grade A only reverse print, CI or stack
- Lamination
- Both grades solvent, solventless, water-based
- Sealing
- Heat seal on the seal face
- Corona
- Treated face, ≥ 38 dyn/cm
- Storage
- Below 30 °C, out of direct light
Printing grade or lamination grade?
A carries a protective coating over the AlOx layer and is the grade the TDS lists for printing as well as lamination. Its AlOx face is specified at ≥ 38 mN/m wetting tension and runs at 48 typical — the surface a press needs. Print it and laminate, or laminate straight away.
B has no protective coat and is listed for lamination only. It goes into the structure as the barrier layer and stays there: no ink on this web. If the job prints on the barrier film, start with A.
Which face goes where
The coated face and the sealable face are marked on the roll label and on the grade sheet. Keep the coating out of the adhesive interface unless the trial has shown otherwise: place it on the product side of the outer web, which is where it protects the barrier. On B the oxide is bare, so keep it clear of grooved or scratched rollers.
What the trial has to prove
Adhesion after lamination, the seal window on your machine, print registration on a clear web, and the OTR of the finished structure rather than of the film alone. Send us the finished-structure result and it goes on the grade record.
Where ALOX BOPP is the right call
Transparent products that need oxygen and aroma barrier, and where a metallized look would be wrong.
| Market | Typical structure | What the film buys |
|---|---|---|
| Chocolate & confectionery | PP / AlOx-BOPP / PP | Barrier without hiding the product; aroma retention |
| Biscuits, crackers, bakery | PP / AlOx-BOPP / PP | Moisture and oxygen barrier, print on the outer web |
| Personal care, wipes | PP / AlOx-BOPP / PP | Clear film with fragrance and moisture barrier |
| Confectionery flow-wrap | AlOx-BOPP / PP sealant | High-speed flow wrap with a clear barrier web |
Documentation
Issued per grade and per lot. Ask for the full pack with the sample roll rather than later, once the claim is already in a customer's hands.
Technical data sheet
Every value on this page with its method and condition, grade A and grade B.
Lot certificate
Measured thickness, width, length and barrier for the delivered roll.
Food-contact documentation
FDA compliance; EU 10/2011 migration test report supplied with the sample.
Recyclability statement
PP stream, density and label conditions for a converter's own claim.
Questions we get before the trial
If the answer you need is not here, ask it directly — technical questions get an engineer's reply, not a brochure.
What is the difference between grade A and grade B?
The protective coating. A has one, and is specified for printing and lamination; B has none, and is specified for lamination only. Thickness (18 µm), density and the haze limit are the same on both. A is specified tighter on barrier: OTR ≤ 1 and WVTR ≤ 1, against ≤ 2 for B.
Which grade can be printed?
A. It is the grade the TDS lists for printing, and its AlOx face carries the higher wetting tension — 48 mN/m typical, ≥ 38 mN/m specified — which is the surface property a press needs. B is not a print grade: if the job puts ink on this film, start with A.
Does the coating survive lamination?
It survives when it is placed on the product side of the outer web and the adhesive is applied to the untreated face. The trial is what confirms it for a specific adhesive and line speed.
Does the pack stay transparent?
Yes. AlOx is a clear oxide layer, not a metal layer, so the pack does not turn into a mirror and the product stays visible. Haze target is 2 % or below on both grades.
Which face is sealable?
One face carries the heat-seal layer. Both faces are marked on the roll label: the coated face, and the seal face. The grade sheet repeats it.
Can it replace a metallized film?
Only where you wanted transparency or a PP structure. If the requirement is maximum light and moisture barrier in a PE structure, Metallized PE is the grade to trial.
Trial ALOX BOPP on your line
Tell us whether you print or laminate, and the width you need. The sample roll ships with its lot data; A4 sheets are free.
- Sales
- [email protected]
- Phone
- +86 532 6776 6956
- Works
- Qingdao, Shandong, China