If you're looking to create plastic food packaging, it's essential that you understand which plastics are food-safe. Food-safe plastic resins are those approved for contact with edibles by the Food and Drug Administration (FDA). They are known as food contact substances (FCS).
The FDA defines tvari u kontaktu s hranom as "any substance that is intended for use as a component of materials used in manufacturing, packing, packaging, transporting, or holding food."
Evo najčešćih plastičnih smola koje je FDA odobrila za kontakt s hranom.
polietilen tereftalat (PET)
PET smola se naširoko koristi u plastici koja ima primjenu u kontaktu s hranom, od sveprisutnih 2-litarskih boca sode do boca za prelive za salatu do tegli putera od kikirikija. Velika većina boca za piće za jednu porciju napravljena je od PET-a. Posebno-tretirane PET posude se mogu peći u mikrovalnoj pećnici i koriste se u posudama za-iznošenje i posudama za hranu za jednu porciju.
The FDA has approved both virgin and poslije-potrošački reciklirani (PCR) PET za kontakt s hranom. The resin has been thoroughly studied for negative health effects and found to cause none. According to a foundational study, "PET itself is biološki inertan ako se proguta, bezbedan je za kožu tokom rukovanja i nije opasan ako se udiše."
PET resin is stable. That means it doesn't degrade when in contact with food or beverages, it resists corrosion, and it repels microorganisms. These qualities that make it ideal for food contact.
polipropilen (PP)
Polypropylene is a widely used plastic. You likely have polypropylene plastic in your fridge and cupboards right now: it's regularly used in reusable food storage containers. It's also the resin used to make yogurt containers and other single-serving tubs.
PP plastics are approved for food contact. They are inertnih materijala i ne predstavljaju opasnost po zdravlje potrošača. The FDA began to odobriti reciklirani polipropilen kao siguran za hranu-2013.
Polypropylene's high melting point makes it suitable for microwaveable food containers. It's nonvolatile and doesn't react to liquids, acids, or bases, so it's perfect to store a wide variety of foods.
Polietilen visoke gustine- (HDPE)
HDPE je najčešća plastika u domaćinstvu. U prodavnici možete vidjeti puno HDPE plastičnih boca u prolazu za sokove i kutiji za mlijeko. HDPE se također koristi u posudama za puter, kutijama za žitarice i u velikim kantama za hranu, kao što su one koje snabdijevaju školske kafeterije i restorane.
Virgin HDPE is a safe plastic for food contact. The FDA has sanctioned recycled HDPE za kontakt s hranom od slučaja-po{1}}od slučaja više od 20 godina.
HDPE resin produces plastic that is corrosion-resistant and absorbs little moisture, making it well-suited for storing beverages. Also, HDPE containers don't leach chemicals into their contents.
Polietilen niske gustine (LDPE)
LDPE plastika je slična HDPE plastici, ali je poznata po tome što je manje kruta. Popularne su u bocama za cijeđenje, kao što se koriste za kečap i senf; plastične folije, kao što su one koje omotavaju komercijalne pečene proizvode i meso; i šest-prstenova.
Virgin LDPE resins are safe for food contact. While recycled LDPE/PP blends have been approved for food contact by the FDA on dva prilike, materijali napravljeni od 100 posto PCR LDPE smole nisu očišćeni za kontakt s hranom.
LDPE ima dobru hemijsku otpornost, visoku otpornost na udar i jaku apsorpciju habanja. Poput PET i HDPE plastike, LDPE može zadržati vaše prehrambene proizvode bez ispiranja bilo kakvih štetnih materijala ili dopuštanja mikroorganizmima da prodre.
Polikarbonat (PC)
Polikarbonat se obično koristi u flašama{0}}hladnjacima vode, flašicama za bebe i posudama za vodu za višekratnu upotrebu.
There's been a lot of discussion the past few years about the food safety of polycarbonate because there is bisphenol A (BPA) in the resin). BPA is rumored to be hazardous to health. Because of the public scrutiny, it has been extensively tested. The prosječni potrošački unos BPA je vrlo nizak, and hemikalija se ne akumulira u tijelu. No health risks are known to exist at such small levels, and the FDA has zaključio da je bezbedan za kontakt s hranom. Neki proizvođači su zamijenili ko-ko-kopoliester koji je odobrila FDA kako bi osigurali prozirne kontejnere koji ne sadrže BPA-.
PC is an especially tough plastic (it's used for bullet-resistant windows), making it ideal for "unbreakable" water bottles and storing large amounts of a product.
