Biodegradable plastics are mainly made of natural polymers (such as starch, cellulose, chitin) or agricultural and sideline products through microbial fermentation or synthesis of biodegradable polymers, such as thermoplastic starch plastics, aliphatic polyesters, polylactic acid, starch, polyvinyl alcohol, etc. belong to this type of plastic. They can be completely biodegraded by means of "composting degradation", while the degradation cycle of PE plastics is 30-50 years. In order to reduce the pollution of plastic products to the social environment, many large shopping malls have stopped using non-degradable plastic shopping bags.
Are there still plastic straws on the market? Do consumers approve of degradable straws? Many large catering companies, including milk tea shops and coffee shops of various brands, no longer provide disposable plastic straws. Most of them have been replaced by paper straws, some have been changed to polylactic acid degradable straws, and some of them are replaced by cup lids that can be directly drunk. Young people's favorite milk tea shops, fast food restaurants, bakery coffee shops, and other catering companies have also begun to use paper straws and biodegradable drinking straws made of polylactic acid.
The ban on single-use plastic straws has created a huge market demand for degradable straws. At present, there are mainly two types of degradable straws that are widely promoted in the market, one is a paper straw, and the other is a degradable straw made of polylactic acid. How are these two straws different from traditional single-use plastic straws? What is the current market supply situation?
Due to different materials and differences in production technology, the current production cost of degradable straws is significantly higher than that of traditional disposable plastic straws. Generally speaking, the overall cost of pulp straws is three times more expensive than plastic straws on average, and the better ones may be five times more expensive. PLA is more expensive, often five to six times more expensive than plastic straws. This kind of straw is a biodegradable drinking straws made of polylactic acid. Under the condition of composting, this kind of straw will degrade in only 90 days, which means that it will disappear. Degradable straws made of polylactic acid are produced from crops such as corn and sugarcane through a series of complex processes.
In addition, market participants suggested that the promotion of biodegradable drinking straws does not mean that they can be discarded at will after use. Because it degrades slowly under pure natural conditions, it still needs reasonable recycling. At the same time, in order to promote the recycling of resources, the use of recyclable straws made of bamboo, glass, stainless steel and other materials is also encouraged.