Products Description
Heat shrink bag is a kind of plastic packaging material that tightly wraps the goods through heating and shrinking. It has the functions of transparency, moisture-proof, dust-proof and improving the appearance of products. Its main classification, application and characteristics are as follows:
1. Common material types of heat shrinkable bags
POF (polyolefin) heat shrinkable bag
Features: environmental protection, non-toxic, high transparency, strong tear resistance, suitable for food, daily necessities and other packaging.
Application: instant noodles, milk tea boxes, cigarette boxes and other sealed packaging.
PVC (polyvinyl chloride) heat shrinkable bag
Features: high shrinkage rate, good gloss, low cost; but poor environmental protection.
Application: stationery, toys, hardware tools and so on packaging.
PET (polyester) heat shrinkable bag
Features: high strength, high barrier (moisture/anti-oxygen), high temperature resistant, often used in beverage labels.
Application: beverage bottle label, electronic product packaging.
PE (polyethylene) heat shrinkable bag
Features: good flexibility, strong impact resistance, suitable for heavy goods bundled packaging.
Application: mineral water/brewer's bottle combination packaging, building materials transportation protection.
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2.The core advantages of heat shrinkable bags
Improve product appearance: high transparency to display goods, printed exquisite labels to enhance the appeal.
Protection performance: waterproof, dustproof, wear-resistant, suitable for long-distance transportation.
High efficiency sealing: fully sealed design to extend the shelf life of food (such as frozen meat).
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3. Application scenarios of heat shrink bags
Food industry: sealing and preservation of labels for fresh meat, dairy products and beverages.
Daily chemical and electronics: outer packaging protection of cosmetics, medicines and electronic products.
Logistics consolidation: fixed boxes and pallet cover for bottled beverages and canned food.
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4. Precautions for the use of heat shrinkable bags
Adjustment of equipment parameters for heat shrinkable bags:
Bloating problem: increase the air hole, reduce the conveyor belt speed or increase the temperature.
Aerosol elimination: reduce the temperature or speed up the delivery.
Seal is not tight: adjust the seal temperature, pressure or clean the heat seal knife.
Key points for purchasing heat shrink bags:
Select the thickness according to the weight of the item (such as PE material for heavy objects).
Food packaging should meet environmental standards (POF/PET is preferred).
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5. Market trend of heat shrinkable bags
Size growth: The global heat shrink label market reached $8.7 billion in 2024 and is expected to grow to $12.1 billion by 2031 (CAGR of 4.9%).
Environmental protection upgrade: the demand for POF and other degradable materials is rising, which promotes technological innovation in the industry.
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Material performance comparison table
|
material type |
pellucidity |
Environmental friendliness |
resistance to impact |
Typical application |
|
POF |
polar altitude |
★★★★★ |
★★★☆☆ |
Seal food and daily necessities |
|
PVC |
tall |
★★☆☆☆ |
★★☆☆☆ |
Stationery and toy packaging |
|
PET |
tall |
★★★★☆ |
★★★★☆ |
Beverage labels, electronics |
|
PE |
secondary |
★★★☆☆ |
★★★★★ |
Heavy goods are packed in bundles |
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