Blown Film Line Showing Die Bubble
11 Blown Film Line Showing Die & Bubble
Aluminum Foil Household foil is typically 17.5 um(0.0007 inches) Available in gauges as low as 7 um(0.00028 inches) Pin holing is present below 12 um(0.0005 inches) Foil is susceptible to flex cracking Most foils are supported with plastic and/or paper Unsupported foil used for some lid-stock tablet push-through packaging 12
12 Aluminum Foil Household foil is typically 17.5 mm (0.0007 inches) Available in gauges as low as 7 mm (0.00028 inches) Pin holing is present below 12 mm (0.0005 inches) Foil is susceptible to flex cracking Most foils are supported with plastic and/or paper Unsupported foil used for some lid-stock & tablet push-through packaging
Aluminum Foil characteristics Intact foil is a 100% barrier to all gases AA入AA Best deadfold properties Easily punctured(tamper evidence) Reflective of radiant heat Conductive(induction sealing Decorative appeal all reflective metallics are aluminum 13
13 Intact foil is a 100% barrier to all gases Best deadfold properties Easily punctured (tamper evidence) Reflective of radiant heat Conductive (induction sealing) Decorative appeal: all reflective metallics are aluminum Aluminum Foil Characteristics
Foil Packaging Applications Unsupported foil, non- sealable e.g. confection and cheese wraps Unsupported foil, heat sealable e.g. lidding stock, pharmaceutical tablet backing material Supported foil, non heat sealable re.g. decorative wraps, label stock Supported foil, heat sealable e.g. high barrier pouches and sachets lidding stock, retort pouches
14 Foil Packaging Applications Unsupported foil, non-sealable e.g. confection and cheese wraps Unsupported foil, heat sealable e.g. lidding stock, pharmaceutical tablet backing material Supported foil, non heat sealable e.g. decorative wraps, label stock Supported foil, heat sealable e.g. high barrier pouches and sachets lidding stock, retort pouches
Aluminum Vacuum Metallizing ← Vacuum line Rewind roll Unwind roll Aluminum_b Wire Chilled roll Aluminum vapor Ceramic boat ig.14.1 15
15 Aluminum Vacuum Metallizing Fig.14.1 Vacuum line Unwind roll Aluminum vapor Ceramic boat Rewind roll Aluminum wire Chilled roll