MATERIALS | BIAX FILM
preferred for small formats and custom laminates. A typical example might be the use of BOPE as a replacement for PET/PE in a stand-up pouch. He said that MDO films are currently ahead of BOPE – but the scalability of BOPE films would help support global adoption of recyclable packaging. “Consumer demand for recyclable packaging will fuel the growth of oriented films,” he said.
Technical films Reinhard Priller, sales director for Asia at Bruckner, said that oriented films such as BOPP, BOPET, BOPA and BOPE are critical for the future of packaging – in areas from shrink film to stand-up pouches. The company is developing innovation in many
areas of biaxial machinery. In BOPET, for instance, it has developed a special sliding chain that ensures a simpler maintenance process – with half the number of parts needed. It already has three such lines in production, running at speeds up to 600 m/ min. It is producing eight more BOPET lines with this technology over the remainder of the year. Other lines being planned include: a 7.4m-wide sequential BOPA line, beginning in mid-2024; a BOPLA/BOPHA line for PepsiCo to produce
home-compostable packaging; and a BOPP line for Irplast, with an output of 25,000 tonnes/year (for start-up in 2025). Irplast is also using Bruckner’s Lisim technology to produce a variety of films – from shrinkable labels to thermostable films.
Biodegradability Todd Fayne, R&D associate director at PepsiCo, went into more detail on its use of BOPLA and BOPHA films.
“Biopolymers must be versatile to match existing
specifications,” he told delegates. He compared a typical BOPP-based film
structure – containing various materials including standard PP – with a biodegradable film that uses PLA and PHA. In this version, elements such as low seal
initiation temperature, machinability and heat stability are still required. “The molecular weight of PHA can decrease under high temperatures, which impacts film properties,” he said. In addition, the crystallisation rate of PHA is much slower than that of conventional polymers – which also affects manufacturing.
�
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58
