The paper cores for plastic packaging bags have the following functions:
1. Fixation and support
Prevent looseness: The core can maintain the roll shape of the plastic packaging bag to prevent looseness and deformation during transportation or storage.
Easy to roll: The paper core provides rigid support when winding, making the plastic film more flat and evenly wound.
2. Protection function
Avoid extrusion deformation: The paper core can resist external pressure and prevent the plastic bag from being flattened during stacking or transportation.
Reducing friction: The paper core isolates the plastic layer to prevent the film from sticking or scratching due to friction (especially high gloss or printed surfaces).
3 Convenience of use
Easy to extract: Rolled plastic bags with paper cores (such as plastic wrap, garbage bags) can be fixed and used like rolls of paper, and it is more convenient to extract with one hand.
Simplified packaging: Plastic packaging can be quickly cut or rewound by paper cores during production.
4 Balance between environmental protection and cost
Replacing all-plastic cores: Paper cores are easier to degrade than all-plastic cores, reducing costs while reducing environmental burden (partially recyclable).
Lightweight design: Compared with pure plastic shafts, paper sheets are lighter and save logistics costs.
By rolling up the paper core, plastic packaging bags can play a more efficient and environmentally friendly role in both production and consumption.
5. Common application scenarios
Household products: roll packaging of plastic wrap, garbage bags, and food sealing bags.
Industrial packaging: Rolling and transportation of bulk plastic films (such as PE stretch film).
