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, the free radicals were broken and further degraded into CO2 and water.

　　根据降解机理，可降解塑料可分为光降解塑料、添加光敏剂的光降解塑料、生物降解塑料和由多种可降解塑料复合而成的多功能可降解塑料。根据降解塑料的情况，可分为光降解塑料、生物降解塑料、完全生物降解塑料、部分生物降解塑料、化学降解塑料、氧化降解塑料、水降解塑料和由三种可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, photodegradable plastics with photosensitizers, biodegradable plastics and multifunctional degradable plastics compounded by a variety of degradable plastics. According to the situation of degradable plastics, they can be divided into photodegradable plastics, biodegradable plastics, fully biodegradable plastics, partially biodegradable plastics, chemically degradable plastics, oxidative degradable plastics, water degradable plastics and composite degradable materials composed of three degradable plastics.

　　在可降解塑料中加入光敏剂是塑料加工过程中为数不多的光敏剂。由于光敏剂的光敏效应和光化学反应，产生了自由基激发源，使得泡袋材料加速了聚合物的光降解过程。制造塑料的方法简单，成本低。光降解塑料只能在阳光照射的前提下降解，受到地理条件和天气条件的限制，所以光降解塑料的普遍应用必然受到限制。

　　Adding photosensitizers to degradable plastics is one of the few photosensitizers in the processing of plastics. Due to the photosensitive effect and photochemical reaction of photosensitizer, free radical excitation source is produced, which makes the bubble bag material accelerate the photodegradation process of polymer. The method of making plastics is simple and low cost. Photodegradable plastics can only be degraded under the premise of sunlight, which is limited by geographical conditions and weather conditions, so the general application of photodegradable plastics is bound to be limited.

　　泡袋又称气垫膜、珠胶、泡辊等，采用低密度聚乙烯加工而成，是一种广泛应用于软包装上的一种信息材料，应用广泛。气泡袋的原则是,这部电影包括空气形成泡沫,避免产品的影响,以确保产品维护时振实效果,但也有保温和隔热材料的影响,适合各行各业的不同产品包装或周转。由于中间层是充满空气的，所以车身轻、有弹性，具有隔音、防震、抗磨的功能，它具有防水、防潮、抗压、抗阻的性能。

　　Bubble bag, also known as air cushion film, bead glue, bubble roller, etc., is a kind of information material widely used in soft packaging, which is processed by low-density polyethylene. The principle of bubble bags is that the film includes air bubbles to avoid the impact of products, so as to ensure that the product is effective when maintaining, but also has the effect of thermal insulation and thermal insulation materials, which is suitable for different products packaging or turnover in all walks of life. As the middle layer is full of air, the body is light and elastic, with sound insulation, shock resistance and anti-wear functions. It has the properties of water-proof, moisture-proof, compression resistance and resistance.