Different packaging contents and different uses, the composite bag material structure also vary, cooking bags, biscuit packaging and liquid detergent bags are common in our lives several types of composite packaging products.
Cooking bags
1, packaging requirements
For the packaging of meat, poultry and other composite bags, packaging barrier is good, resistance to bone piercing, in the cooking conditions sterilization is not broken, cracked, no contraction, no smell.
2, design structure
Transparent class: BOPA / CPP, PET / CPP, PET / BOPA / CPP, BOPA / PVDC / CPP, PET / PVDC / CPP, GL-PET / BOPA / CPP.
Foil categories: PET / AL / CPP, PA / AL / CPP, PET / PA / AL / CPP, PET / AL / PA / CPP.
3, design reasons
PET: high temperature, good rigidity, good printability, high strength.
PA: high temperature, strength, flexibility, good barrier, puncture resistant.
AL: the best barrier, high temperature.
CPP: high temperature cooking class, heat sealing, non-toxic and tasteless.
PVDC: barrier material.
GL-PET: Ceramic deposited film, good barrier, through the microwave.
Choose the right structure for the specific product, most of the transparent band for cooking, aluminum foil bags can be used for ultra-high temperature cooking.
Cookies bags
1, packaging requirements
Good barrier properties, shading strong, oil, high strength, odorless and tasteless, packing crisp.
2, design structure: BOPP / EXPE / VMPET / EXPE / S-CPP.
3, design reasons
BOPP: Good rigidity, good printability and low cost.
VMPET: good barrier, avoid light oxygen, water blocking.
S-CPP (modified CPP): low temperature heat sealing, oil.
Laundry liquid bag
1, packaging requirements
High strength, impact resistance, burst resistance, good barrier properties, good rigidity can stand up, stress cracking, sealing is good.
2, design structure
Stereo: BOPA / LLDPE; Bottom: BOPA / LLDPE.
Stereo: BOPA / reinforced BOPP / LLDPE; Bottom: BOPA / LLDPE.
Stereo: PET / BOPA / reinforced BOPP / LLDPE; Bottom: BOPA / LLDPE.
3, design reasons
The structure of the barrier is good, the material rigidity, suitable for self-standing bag, the bottom is good for processing flexibility. The inner layer of modified PE, anti-sealing pollution. Reinforced BOPP increases the mechanical strength of the material and enhances the barrier properties of the material. PET improves the water resistance and mechanical strength of the material.
