【中文版】

热风底膜是一种包装材料，通常用于食品、药品等产品的包装。它是由一层塑料薄膜和一层纸组成的，在塑料薄膜的一面设置有热封层。热风底膜在热封层的一面受到热风加热后，可以与另一面进行黏合，从而形成一个封闭的包装。

热风底膜具有很多优点。首先，它可以提供防潮、防氧、防腐等保护功能，有效地保护产品免受外界环境的影响。其次，热风底膜的密封性能好，可以保证包装内的产品不漏气、不漏液。此外，热风底膜还具有成本低、环保等优点，被广泛应用于各种产品的包装中。

在药品行业中，热风底膜的应用尤为广泛。由于药品对包装的密封性、阻隔性等要求非常高，因此热风底膜成为药品包装的首选材料之一。在药品包装中，热风底膜可以有效地防止药品受潮、氧化、变质等问题，保证药品的品质和稳定性。

总之，热风底膜是一种具有多种优点的包装材料，被广泛应用于食品、药品等产品的包装中。它的应用不仅提高了产品的质量和稳定性，同时也降低了包装成本，为生产商和消费者带来了实实在在的好处。

【英文版】

Hot-air bottom film is a packaging material commonly used for packaging food, medicine and other products. It is composed of a layer of plastic film and a layer of paper, with a hot-seal layer applied to one side of the plastic film. When the hot-seal layer of the hot-air bottom film is heated by hot air, it can be adhered to the other side to form a closed package.

Hot-air bottom film has many advantages. Firstly, it can provide moistureproof, oxygen-proof, and防腐 protection to effectively protect the product from external environmental factors. Secondly, the sealing performance of hot-air bottom film is good, which can ensure that the packaged product does not leak or leak. In addition, hot-air bottom film also has the advantages of low cost and environmental protection, and is widely used in the packaging of various products.

In the pharmaceutical industry, the application of hot-air bottom film is particularly widespread. Because drugs have very high requirements for packaging sealing and barrier properties, hot-air bottom film has become one of the preferred materials for drug packaging. In drug packaging, hot-air bottom film can effectively prevent moisture absorption, oxidation, and deterioration of drugs, ensuring the quality and stability of drugs.

In summary, hot-air bottom film is a packaging material with multiple advantages that is widely used in food, medicine and other product packaging. Its application not only improves product quality and stability, but also reduces packaging costs, bringing tangible benefits to manufacturers and consumers.