Mainstream Materials Comparison
The transparent outer layer of food packaging film actually hides some secrets. There are three main types:
**Polyethylene (PE)**: Soft like cling film, suitable for low-temperature refrigeration, but slightly less heat resistant.
**Polypropylene (PP)**: Microwave safe, can withstand temperatures up to 120℃, and offers superior transparency.
**Polyester (PET)**: The same material used in mineral water bottles, high hardness and good barrier properties.
Safety Identification Tips
Remember three key points when choosing:
Observe the label: Legitimate products will be marked "For food contact use."
Touch test: High-quality materials have a smooth feel and no irritating odor.
Usage test: It should not become cloudy or deformed after being filled with hot water.
Daily Use Guidelines
Secrets to making packaging film better serve your life:
Packaging tips: Wrap fresh meat in PE film before freezing to prevent dehydration.
Heating precautions: PP material is microwave safe, but ventilation holes are necessary.
Environmentally friendly options: Biodegradable cornstarch film is suitable for short-term packaging.
