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 toiduga kokkupuutuvad ained as "any substance that is intended for use as a component of materials used in manufacturing, packing, packaging, transporting, or holding food."
Siin on kõige levinumad plastvaigud, mille FDA on toiduga kokkupuutumiseks heaks kiitnud.
Polüetüleentereftalaat (PET)
PET-vaiku kasutatakse laialdaselt toiduga kokkupuutuvates plastides, alates üldlevinud 2-liitristest soodapudelitest kuni salatikastmepudelite ja maapähklivõipurkideni. Valdav enamus ühekordseks kasutamiseks mõeldud joogipudelitest on valmistatud PET-st. Spetsiaalselt-töödeldud PET-mahutid on mikrolaineahjus kasutatavad ja neid kasutatakse väljavõtu-
The FDA has approved both virgin and post-tarbija taaskasutatud (PCR) toiduga kokkupuutumiseks mõeldud PET. The resin has been thoroughly studied for negative health effects and found to cause none. According to a foundational study, "PET itself is allaneelamisel bioloogiliselt inertne, käsitsemisel nahale ohutu ega ole sissehingamisel ohtlik."
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.
Polüpropüleen (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 inertseid materjale ega kujuta endast ohtu tarbijate tervisele. The FDA began to 2013. aastal kinnitas ringlussevõetud polüpropüleen-toiduohutuks.
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.
Kõrge{0}}tihedusega polüetüleen (HDPE)
HDPE on kõige levinum majapidamisplast. Toidupoes näete mahlakäigus ja piimakarbis palju HDPE plastpudeleid. HDPE-d kasutatakse ka võimahutites, teraviljakarbi vooderdis ja suurtes toiduämbrites, näiteks koolikohvikutes ja restoranides.
Virgin HDPE is a safe plastic for food contact. The FDA has sanctioned recycled HDPE toiduga kokkupuutumiseks üle 20 aasta-juhtumipõhiselt-.
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.
Madala{0}}tihedusega polüetüleen (LDPE)
LDPE plastid on sarnased HDPE plastidega, kuid on tuntud vähem jäikuse poolest. Need on populaarsed pigistatavates pudelites, näiteks ketšupi ja sinepi jaoks; plastkiled, näiteks need, mis pakivad kaubanduslikke küpsetisi ja liha; ja kuus{0}}paki rõngast.
Virgin LDPE resins are safe for food contact. While recycled LDPE/PP blends have been approved for food contact by the FDA on kaks kordadel, 100% PCR LDPE vaigust valmistatud materjalid ei ole toiduga kokkupuutumiseks puhastatud.
LDPE-l on hea keemiline vastupidavus, kõrge löögitugevus ja tugev kulumisvõime. Sarnaselt PET- ja HDPE-plastidele suudab LDPE hoida teie toiduaineid, ilma et see leostuks kahjulikke materjale või võimaldaks mikroorganismidel imbuda.
Polükarbonaat (PC)
Polükarbonaati kasutatakse tavaliselt vee{0}}jahutites, lutipudelites ja korduvkasutatavates veeanumates.
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 keskmine tarbija BPA tarbimine on väga madal, and kemikaal ei kogune kehasse. No health risks are known to exist at such small levels, and the FDA has järeldas, et see on toiduga kokkupuutel ohutu. Mõned tootjad on asendanud FDA{0}}heakskiidetud ko-polüestri, et pakkuda läbipaistvaid BPA-vaba konteinereid.
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.
