How to Choose Waterproof, Oil-Proof, and High-Temperature Resistant Labels?
💡 💡 At a Glance
Specialty Label Selection Guide: Waterproof, Oil-Proof, High-Temperature Scenarios Analyzed One by One
Application Scenarios of Specialty Labels
Ordinary coated paper self-adhesive labels perform well in normal environments, but when exposed to water, oil, or high temperatures, they are prone to falling off, blurring, or even complete failure. Waterproof labels, oil-proof labels, and high-temperature resistant labels are specialty labels designed to meet these special environmental needs. The core difference lies in the selection of face stock and adhesive.
Key Points for Selecting Waterproof Labels
Waterproof labels require face stock with good waterproof performance, commonly synthetic paper (e.g., YUPO), PET, and PE materials. Synthetic paper has excellent waterproof performance and tear resistance, suitable for outdoor environments and cold chain logistics. PET has high transparency and chemical resistance, suitable for cosmetics and daily chemical products. PE material is softer, suitable for curved surface labeling.
Regarding adhesive, standard permanent adhesive loses tackiness in humid environments. It is necessary to choose waterproof adhesive or freezer-grade adhesive to ensure it remains strong under humid or submerged conditions. For outdoor products such as dishwashing liquid and body wash bottle labels, it is recommended to use synthetic paper face stock with permanent waterproof adhesive.
Key Points for Selecting Oil-Proof Labels
Oil-proof labels are mainly used in scenarios such as kitchen products, chemical products, and oil bottles. When ordinary labels come into contact with oily substances, the ink dissolves and the label edges lift. Oil-proof labels achieve oil resistance in two ways: first, by using chemical-resistant face stock such as PET or PVC; second, by adding a lamination or UV coating as a protective layer on the surface.
Key Points for Selecting High-Temperature Resistant Labels
High-temperature resistant labels must withstand high-temperature environments without deforming or falling off. For the 80-120°C range, PET material is used, suitable for drying processes and hot water immersion scenarios. For the 120-200°C range, polyimide (PI) material is used, which can withstand reflow soldering and wave soldering processes, and is standard in the electronics industry. After the PCB boards in the electronics industry undergo reflow soldering (peak 260°C), the labels must remain intact and readable.
Summary: Label Selection Decision Tree
Pure outdoor humid environment → Synthetic paper + waterproof adhesive. Immersion or underwater use → PET face stock + waterproof adhesive. Contact with grease or chemicals → PET/PVC face stock + lamination. High-temperature environment → Choose PET (below 120°C) or polyimide (below 200°C) based on temperature. When multiple factors coexist, combinations can be used, but actual testing is required to verify effectiveness.
❓ FAQ
Which is better for waterproofing, synthetic paper or PET?
Both have excellent waterproof performance, but with different focuses. Synthetic paper (e.g., YUPO) feels like paper but is completely waterproof, suitable for outdoor use. PET has high transparency and good chemical resistance, suitable for bottle labeling and scenarios where see-through effects are needed.
What temperature can high-temperature resistant labels withstand?
Ordinary PET high-temperature labels can withstand 120°C, suitable for drying scenarios. Polyimide (PI) labels can withstand 200°C, suitable for reflow soldering processes. Special ceramic labels can reach above 600°C.
Can oil-proof labels be used on edible oil bottles?
Yes. It is recommended to use PET face stock with lamination process; the surface lamination effectively blocks oil penetration. At the same time, printing ink should be chemical-resistant type.
Are there labels that are both waterproof and high-temperature resistant?
It can be done. Polyimide (PI) face stock with special high-temperature adhesive is both waterproof and high-temperature resistant (below 200°C). However, note that ordinary adhesive loses its tackiness in high-temperature environments.
Do specialty labels support small batch customization?
Yes. Both synthetic paper and PET can be digitally printed. LeXiang Packaging supports small batch, multi-variety customization, minimum order of 1 roll, no plate fees, suitable for new product trial sales and diverse needs.
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