The bubble bag is a kind of biodegradable foam plastic. It is discussed in terms of photodegradable plastics, currently in polyhydroxybutyrate (PHB) and polyhydroxyvalerate (PHV), its function is similar to PE and PP, and the price of PE is about 10 times. The truth is that the polymer receives ultraviolet effect, weakens the key, and the long chain fragment is divided into low molecular weight and decreased body function. The fragments with lower molecular weight were further oxidized in the air, resulting in the fracture of free radical chain and further degradation to CO2 and water.

　　根据降解机理，可降解塑料可分为光降解塑料、光敏剂光降解塑料、生物降解塑料和多功能可降解塑料。根据降解塑料的情况，分为光降解塑料、生物降解塑料、完全生物降解塑料、部分生物降解塑料、氧化降解塑料、水降解塑料和由三种降解塑料组成的复合降解材料。

　　According to the degradation mechanism, degradable plastics can be divided into photodegradable plastics, photosensitizer photodegradable plastics, biodegradable plastics and multifunctional degradable plastics. According to the situation of degradable plastics, it can be divided into photodegradable plastics, biodegradable plastics, fully biodegradable plastics, partially biodegradable plastics, oxidative degradable plastics, water degradable plastics and composite degradable materials composed of three kinds of degradable plastics.

　　添加光敏剂的光降解塑料是塑料加工过程中的几种光敏剂。由于光敏剂的光激发效应和光化学反应，会产生自由基激发源，所以气泡袋材料可以加速聚合物的光降解过程。这种塑料制造方法简单，成本也低。光降解塑料只有在阳光照射的条件下才能降解，受地理和天气条件的限制。

　　Photodegradable plastics with photosensitizers are several photosensitizers in the process of plastic processing. Due to the photo excitation effect and photochemical reaction of photosensitizer, free radical excitation source will be generated, so the bubble bag material can accelerate the photodegradation process of polymer. This kind of plastic is easy to manufacture and low in cost. Photodegradable plastics can only be degraded under the condition of sunlight, which is limited by geographical and weather conditions.

　　泡袋，又称气垫膜、珠塑料、泡圈等，采用低密度聚乙烯加工而成，是一种用途广泛、用途明确的软包装材料，用途广泛。气泡袋原理是由包括气泡在内的薄膜构成，以避免产品受到冲击，保证产品在震动时的保养效果，同时还具有保温效果，适用于不同行业的产品包装或周转。因为气泡袋的层是充满空气的，所以车身轻、有弹性、隔音、防震、抗磨损的功能，而且还具有防水、防潮、抗压、减少阻力等功能。

　　Bubble bag, also known as air cushion film, bead plastic, bubble ring, etc., is made of low-density polyethylene. It is a kind of flexible packaging material with wide use and clear use. The principle of bubble bag is composed of film including bubble, so as to avoid the impact of the product, ensure the maintenance effect of the product when it vibrates, and also have the effect of heat preservation, which is applicable to the packaging or turnover of products in different industries. Because the central layer of the bubble bag is full of air, the body is light, elastic, sound proof, shockproof and wear-resistant, and it also has the functions of water-proof, moisture-proof, compression resistance and resistance reduction.