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.

　　根據降解機理，可降解塑料可分為光降解塑料、添加光敏劑的光降解塑料、生物降解塑料和由多種可降解塑料復合而成的多功能可降解塑料。根據降解塑料的情況，可分為光降解塑料、生物降解塑料、完全生物降解塑料、部分生物降解塑料、化學降解塑料、氧化降解塑料、水降解塑料和由三種可降解塑料組成的復合降解材料。

　　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劑是塑料加工過程中為數不多的光敏劑。由于光敏劑的光敏效應和光化學反應，產生了自由基激發源，使得泡袋材料加速了聚合物的光降解過程。制造塑料的方法簡單，成本低。光降解塑料只能在陽光照射的前提下降解，受到地理條件和天氣條件的限制，所以光降解塑料的普遍應用必然受到限制。

　　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.

　　泡袋又稱氣墊膜、珠膠、泡輥等，采用低密度聚乙烯加工而成，是一種廣泛應用于軟包裝上的一種信息材料，應用廣泛。氣泡袋的原則是,這部電影包括空氣形成泡沫,避免產品的影響,以確保產品維護時振實效果,但也有保溫和隔熱材料的影響,適合各行各業的不同產品包裝或周轉。由于中間層是充滿空氣的，所以車身輕、有彈性，具有隔音、防震、抗磨的功能，它具有防水、防潮、抗壓、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.