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MESIM BOPA With Balanced Physical Properties And Converting

SHA is the Biaxial Oriented Polyamide 6 film produced by mechanical simultaneously stretching technology.


Product Details

Features

Features Benefits
● Good oxygen/aroma barrier
● Outstanding isotropy performance in printing and retort
● Longer shelf life and better freshness
● Excellent converting performance and registration accuracy
● Excellent tensile strength, anti-punch and anti-impact properties
● High flex-crack resistance
● Wide temperature range in application
● Excellent transparency and gloss
● Capacity with excellent packaging safety to apply to heavy packaging, sharp and rigid products.
● Minimum distortion after retort

Applications

SHA can be used for producing the high-grade packaging within12 colors, sealing width ≤10cm and needs printing registration. It is not easy to warp and curl after 125℃ retorting. It’s recommended to be used for non-heavy packaging products with single bag capacity less than 2kg, for example, retort pouch and cup lid with delicate patterns.

Product Parameters

Thickness /μm Width/mm Treatment Retortability Printability
15 300-2100 single/both side corona ≤121℃ ≤12 colors

Notice: retortability and printability are depending on customers’ lamination and printing processing condition.

Performance Comparison of General External Materials

Performance BOPP BOPET BOPA
Puncture Resistance
Flex-crack Resistance ×
Impact Resistance
Gases Barrier ×
Humidity Barrier ×
High Temperature Resistance
Low Temperature Resistance ×

bad×      normal△      quite good○      excellent◎

1
2
2121

FAQ

The Small Dot/Shallow Net Lost

Print dots are missing or missed in the shallow position of the printed pattern (generally less than 30% of the dot, serious in 50% of the dot will also appear).

Causes:

Ink fineness is not enough, resulting in some large particles of ink cannot be filled to the network of shallow holes;

● Ink concentration is too thick, resulting in poor printing, the formation of dot hollowing;

● Scraper pressure is too large resulting in small amount of ink, ink supply is uneven, resulting in the loss of small dots;

● The use of too much quick-drying solvent, resulting in the ink drying up in the net hole and unable to attach to the film during the transfer process of the shallow net part;

● Printing speed is too slow, in the ink drying up in the net hole during the transfer process;

● Film surface is too rough; the underlying ink is not smooth.

Related Suggestions:

✔ Choose fineness ≤15μm ink;

✔ Appropriate dilute ink viscosity;

✔ The doctor blade should be adjusted to just scrape the ink, not to put too much pressure;

✔ Use less quick-drying solvent to adjust the drying speed of ink on the plate roller;

✔ Try to ensure that the speed of more than 160m/min printing.


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