How To Distinguish The Quality Of Cling Film
Sep 06, 2024
Food wrap is a common kitchen utensil used to wrap food to maintain its freshness and prevent contamination. Choosing good food wrap is crucial for ensuring the quality and safety of food. Here are some methods to distinguish the quality of food wrap:
1. Materials
Polyethylene (PE): This is a common food grade material that is safe, non-toxic, and suitable for direct contact with food. PE cling film is divided into two types: low-density polyethylene (LDPE) and polyvinyl chloride (PVC), with the former being more suitable for food packaging.
Polyvinyl chloride (PVC): Although inexpensive, it may contain plasticizers that are harmful to human health, especially not suitable for microwave heating.
2. Transparency
High transparency: Good cling film should have high transparency, so that the packaged food can be clearly seen and easily identified.
Low transparency: Plastic wrap with poor transparency may affect the judgment of food status.
3. Viscosity
Good adhesion: High quality cling film can quickly adhere after tearing, and can tightly adhere to the surface when wrapping food, forming a good sealing effect.
Insufficient stickiness: If the cling film is not sticky enough, it will be difficult to maintain the freshness of the food.
4. Thickness
Moderate thickness: Thin plastic wrap is prone to breakage, while thick wrap may affect breathability. Generally speaking, a thickness between 0.015mm and 0.025mm is ideal.
Uniform thickness: High quality cling film should maintain a uniform thickness throughout the entire roll to ensure consistent quality and effectiveness every time it is used.
5. Stretchability
Good stretchability: High quality cling film should have good elasticity, which can be easily stretched without breaking, making it easier to wrap food of different shapes.
Poor stretchability: Plastic wrap with insufficient stretchability is prone to rupture during use, affecting the sealing effect.
6. Temperature resistance
High and low temperature resistance: Good cling film should be able to be used in refrigerator freezers and microwave ovens without affecting its performance. PE cling film usually has good temperature resistance.
Not temperature resistant: If the cling film becomes brittle at low temperatures or releases harmful substances at high temperatures, it is not suitable for use.
7. Security
Non toxic and harmless: Choose cling film with relevant food safety certifications, such as FDA (US Food and Drug Administration) or EU standards, to ensure that the product does not contain harmful chemicals to the human body.
Avoid harmful substances: Avoid using cling film containing BPA (Bisphenol A) or other known harmful substances.
8. Label information
Clear identification: Check if the product label clearly indicates information such as material, instructions for use, production date, etc. Regular manufacturers produce plastic wrap with detailed instructions.
9. User reviews
Reference review: Other users' reviews and feedback can be viewed on online shopping platforms to understand the actual effectiveness of the product.
Through the above points, you can better distinguish the quality of food cling film and choose a safe and effective cling film product. Remember to choose a reputable brand when purchasing, and pay attention to the material, performance, and safety of the product to ensure food safety.
