What are the classifications of food packaging bag materials?

Classification of food packaging bag materials

namepolyethyleneHPLDPELPHDPELinear Low Density PolyethylenePolypropylene (BOPP, OPP)polystyrene
featureLightest plastic for food packagingThe main disadvantage is brittleness
Water resistancegoodhigher than LDPEWater vapor transmission rate similar to HDPEPoor, lower than PE
Gas barrierDifferenceDifferencehigher than LDPEDifferenceOxygen transmission rate
also similar
Mechanical strengthLowhigher than LDPEhigher than LDPEGood, above PEGood rigidity and high brittleness; poor impact resistance
Low temperature resistancevery goodWorse than PE
-17℃ becomes brittle
High temperature resistanceDifferenceexcellentPoor, for
transparencynot tallhigherlower than LDPEgoodgood, Gundam
Printing performancepoor, needs to be dealt withpoor, needs to be dealt with
heat sealabilityvery goodgoodlower than LDPEHigher than HDPEWorse than PE
flexibilitygoodlower than LDPEbetter
Processabilitygoodlower than LDPEgood
health and safetygoodhigher than PEgood, non-toxic, odorless
scope of applicationAdapt to the freezing treatment of foodIt is mainly made into film, which is used for food with lower packaging requirements, dry food with moisture-proof requirements, fresh-keeping packaging for fresh fruits and vegetables; packaging for frozen foodsCompared with LDPE, under the same strength, raw materials can be saved, and it can be used as a heat-sealing layer of composite film for packaging of high-temperature sterilized foodIt is mainly made into film, which is used for packaging meat, frozen food, and dairy products. It has poor gas barrier properties and cannot meet the long-term maintenance requirements.The film needs to be directional stretched, which is better than CPP. It can pack oily food, can replace cellophane to pack snacks and bread, and can be used as twisted packaging for candies and snacks to make various forms of ropes and belts.Made into transparent food boxes and fruit bowls, the brightly colored foamed EPS can be used as thermal insulation and cushioning packaging materials, such as: fast food boxes

Classification of Plastic Packaging Bags - Honest Post


The materials used in common food packaging bags are divided into six categories:

1. Material: BOPP/LLDPE two-layer composite
Features: Moisture-proof, cold-resistant, low-temperature heat-sealing and strong tensile force
Uses: instant noodles, snacks, frozen snacks, powder packaging, etc.

2. Material: BOPP/CPP two-layer composite
Features: Moisture-proof, oil-resistant, high transparency, good stiffness
Uses: instant noodles, biscuits, candies, all kinds of light food

3. Material: BOPP/VMCPP composite
Features: Moisture-proof, oil-resistant, oxygen barrier, shading, good stiffness
Composite bag
Uses: All kinds of dry food, fried food, potato chips

4. Material: BOPP/VMPET/LLDPE three-layer composite
Features: moisture-proof, oxygen barrier, shading
Uses: all kinds of food, rice snacks, snacks, tea

5. Material: PET/CPP two-layer composite
Features: moisture-proof, oxygen barrier, fragrance preservation, high temperature resistance
Uses: steaming, alcoholic food, aroma food

6. Material: PET/PET/CPP three-layer composite
Features: Moisture-proof, high temperature resistance, easy to seal
Uses: powder packaging, soy sauce, liquid, shampoo

gs Cannabis Pouches Marijuana Packaging-Honest Design

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