Food bags material recommendation
"Here we will introduce the use of flexible packaging material in the 10 kinds of food products, including retort bags, snack bags, sauce bags, cookie packaging, powder packaging, tea bags, coffee bags, chocolate bags, and liquid detergent stand up pouches, each category will give the material recommendation and reasons."
used for meat packaging, requires high barrier property,resistant to puncture from the bone, without breaking,shrinkage and smelling in the high temperature retorting.
PET: High temperature resistance, good rigidity, good printability, high strength.
PA: High temperature resistance, high strength, good flexibility, good barrier, puncture resistance.
AL: Best barrier property, high temperature resistance.
CPP: high temperature resistant steaming , good heat sealability, non-toxic and odorless.
PVDC: High temperature resistant barrier material.
GL-PET: Ceramic evaporation coating, good barrier property, microwave permeable.
For specific products to choose the right material, clear bags are mostly used for retort bags, AL foil bags can be used for ultra-high temperature retort bags.
Packaging requirements: block the oxygen and moisture,smell-proof,grease-proof,Straight appearance, bright colors and low cost.
BOPP and VMCPP are both bracing, BOPP has good printability and high gloss, VMCPP has good barrier, fragrance and moisture retention, CPP also has better grease resistance.
Odorless and tasteless, low-temperature sealability, resistance to seal contamination, good barrier properties, and reasonable price.
KPA has excellent barrier property, good toughness, high fastness to PE compound, not easy to break , and good printability. S-PE is a kind of PE blends (co-extrusion), low heat sealing temperature, strong resistance to sealing contamination.
good barrier properties, light-proof,grease-proof,and high mechenical property,and crisp
BOPP has good rigidity, good printability and low cost.
VMPET has good barrier property, light-proof and resistant to oxygen and moisture.
S-CPP has good low temperature heat sealability and grease resistance.
long shelf life, aroma and flavor preservation, anti-oxidation and deterioration, anti-moisture
BOPP has good printability, good luster, good strength and low price.
VMPET good barrier, light-proof, good toughness, with metallic luster.
S-PE has good anti-pollution sealing property and low temperature heat sealing property.
Anti-deterioration, that is, to prevent the oxidation of the protein, chlorophyll, catechic acid and vitamin C type contained in tea.
BOPP/AL/PE BOPP/VMPET/PE KPET/PE
AL foil, VMPET, and KPET are all materials with excellent barrier properties to oxygen, moisture, and odors. The light proof properties of AK foil and VMPET are also excellent. The product price is reasonable.
Ground coffee bags
Resistant to oxygen and moisture, resistance to lumps of the product after vacuuming, and keep aroma of coffee.
PET,BOPP and VMPET has good barrier property ,and PE has good heat sealability..
Good barrier properties, avoid light, beautiful printing, low temperature heat sealing.
Pure Chocolate:White BOPP/PVDC/cold sealant
Chocolate with nuts:BOPP/VMPET/AD/PVDC/cold sealant
Both PVDC and VMPET are high-barrier materials. The cold sealant can be sealed at a very low temperature, and the heat will not affect the chocolate. Because the nuts contain more oil and are easy to oxidize and deteriorate, an oxygen barrier material is added.
Acidic beverages pH <4.5, pasteurization, and general barrier properties.
Neutral beverages PH > 4.5, sterilization, and higher barrier
Neutral beverages :PET/AL/CPP，PET/AL/PA/CPP，PET/AL/PET/CPP，PA/AL/CPP
For acidic beverages, PET and PA can provide good barrier properties and are resistant to pasteurization, and the shelf life is prolonged due to acidity. For neutral beverages, AL provides the best barrier properties, PET and PA are with high trength, and high temperature sterilization resistance.
Liquid detergent bags
High strength, impact resistance, burst resistance, good barrier properties, good rigidity, can stand upright, resistance to stress cracking, and good sealing.
①Front and Back：BOPA/LLDPE；Bottom：BOPA/LLDPE
②Front and Back：BOPA/S-BOPP/LLDPE；Bottom：BOPA/LLDPE
③Front and Back：PET/BOPA/S-BOPP/LLDPE；Bottom：BOPA/LLDPE
The above-mentioned material has good barrier properties, high material rigidity, suitable for stand up pouches, and good bottom flexibility and suitable for production. The inner layer is LLDPE, which has good anti-sealing pollution. S-BOPP increases the mechanical strength of the material and strengthens the barrier properties of the material. PET improves the moisture resistance and mechanical strength of the material.
Post time: Nov-05-2021