1. Biscuit packaging bag
Product requirements: good barrier, strong shading, oil resistance, high strength, tasteless and tasteless, and scratched packaging.
Planning structure: BOPP / exe / VMPET / exe / s-cpp
Reason: BOPP has good rigidity, good printability and low cost. VMPET has excellent barrier property to prevent light, oxygen and water. S-cpp has excellent low temperature heat sealing function and oil resistance.
2. Green tea packaging bag
Product requirements: anti metamorphosis, anti discoloration and anti taste, that is, to prevent the oxidation of protein, chlorophyll, catechuic acid and vitamin C contained in green tea.
Planning structure: BOPP / Al / PE, BOPP / VMPET / PE, kpet / PE
Reason: aluminum foil, VMPET and kpet are excellent barrier materials, which have excellent barrier to oxygen, water vapor and peculiar smell. AK foil and VMPET also have excellent light resistance. The product price is moderate.
3. Puffed fast food packaging bag
Product requirements: oxygen resistance, water resistance, light resistance, oil resistance, fragrance preservation, scratched appearance, bright color and low cost.
Planning structure: BOPP / VMCPP
Cause: both BOPP and VMCPP have scratches. BOPP has excellent printability and high gloss. VMCPP has excellent barrier property, maintaining fragrance and moisture. CPP also has excellent oil resistance.
4. Milk powder packaging bag
Product requirements: long shelf life, fragrance and taste protection, anti-oxidation and metamorphosis, moisture absorption and anti caking.
Planning structure: BOPP / VMPET / s-pe
Reason: BOPP has excellent printability, gloss, strength and moderate price.
VMPET has excellent barrier, light resistance, toughness and metallic luster. It is preferable to use Reinforced PET aluminized with a thick aluminum layer. S-pe has excellent anti pollution sealing function and low temperature thermal sealing function.
5. Grind coffee bags
Product requirements: anti water absorption, anti-oxidation, anti product lump after vacuum pumping, and maintain the volatile and oxidizable flavor of coffee.
Planning structure: PET / PE / Al / PE, PA / VMPET / PE
Reason: aluminum, PA and VMPET have excellent barrier, water resistance and air tightness, and PE has excellent heat sealing.
6. Chocolate bag
Product requirements: good barrier, light resistance, beautiful printing, low temperature heat sealing.
Planning structure: pure chocolate varnish / ink / white BOPP / PVDC / cold sealing adhesive
Nut chocolate varnish / ink / VMPET / AD / BOPP / PVDC / cold sealing adhesive
Reason: PVDC and VMPET are high barrier materials. Cold sealing glue can seal at very low temperature, and heat will not affect chocolate. Because the nut contains more oil and simple oxidative transformation, an oxygen barrier layer is added to the structure.
7. Requirements for cooking products:
Used for packing meat, poultry, etc. The packaging is required to have excellent barrier, anti bone porosity and sterilization, and there is no damage, cracking, shortening and peculiar smell under cooking conditions.
Planning structure: Tongming: BOPA / CPP, PET / CPP, PET / BOPA / CPP, BOPA / PVDC / CPP, PET / PVDC / CPP, GL PET / BOPA / CPP
Aluminum foil: PET / Al / CPP, PA / Al / CPP, PET / PA / Al / CPP, PET / Al / PA / CPP
Reason: Pet: high temperature resistance, good rigidity, good printability and high strength.
PA: high temperature resistance, high strength, flexibility, excellent barrier and puncture resistance.
Aluminum: best barrier, high temperature resistance.
CPP: high temperature cooking grade, good heat sealing, non-toxic and tasteless.
PVDC: high temperature resistant barrier data.
GL PET: ceramic evaporation coating, excellent barrier and microwave permeability.
