Unit 11A
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tetra brick is a _______ type of packaging and is it suitable for commercial sterility?
“form-fill-seal” packaging not suitable
hermetic package
hermetic- impermeable to gas and airtight
are tetra bricks and plastic bottles hermetic?
yes
how was tin cans traditionally made?
steel with a thin costing of tin
how are tin cans now made?
tin has been replaced with other corrosion resistant metals
what are epoxy resins
used as internal coatings for acidic food products prevent metal contamination from dissolving into food product
how are epoxy resins commonly made?
by BPA (bisphenol A)
why ribbing on cans
to help withstand retort pressure
is aluminium malleable
being able to be pushed/hammered to change shape without breaking
does aluminum need internal pressure to maintain shpe
yes
why is co extrusion beneficial ?
is combined the specific individual characteristics into one ( mix together to create a final hybrid film)
inner layer in a retort pound (flexible can )
polyproylene
2nd layer of a retort pouch
aluminum foil for hermetic qualitites
3rd layer of a retort pouch
nylon provides resistence to abrasion (scraping or wearing away in metal)
4th layer in a retort pouch
polyester- heat resistance
retrort thermal formed trays
peel and then microwave
how many layers does a tetra laminate have
4
susceptor based packaging
used to absorb microwave energy
are claims allowed in the treatment of disease?
no, only food composition and nutritional value legal definitions for the claims of “low-fat” “low sodium” sct
subsituents are also being highly regulated
if it is advertised to be “like milk” it must have similar nutritive value
currently tin cans are coated with
epoxy resins
in a 3 sigma process how many defective units are allowed per million
66,000 per million
in a 6 sigma process how many defective units are allowed?
3.4