常见的一次性餐具有哪些种类？

What's a good disposable dishware? There are three kinds of disposable tableware products on the market: paper, corn starch and polystyrene (PS).

纸类一次性餐具的材质是克重在300-350克范围内的漂白硫酸盐木浆纸板为原料，经过冲压成型工艺制成，为防止渗水或渗油，表面使用对人体无害的化学助剂。这种材质的一次性餐具，对纸板的质量要求较高，因而成本也较高。

The material of paper disposable tableware is made of bleached kraft wood pulp board weighing 300-350 grams. It is made by stamping process. In order to prevent water or oil seepage, chemical additives harmless to human body are used on the surface. The disposable tableware made of this material requires higher quality of cardboard and therefore higher cost.

玉米淀粉类的一次性餐具是以玉米淀粉为主要原料，加入膳食纤维和其他可食用类助剂经搅拌捏合而成，它采用生物复配、聚糖交联、钙离子螯合等技术精制而成，有致密层、内防水层、胶网层和外防水层四部分构成。目前市场上的玉米淀粉一次性餐具的玉米淀粉含量并不高，而且价格也较高。

Corn starch disposable tableware is made of corn starch as the main raw material, dietary fiber and other edible additives by stirring and kneading. It is refined by biological compounding, polysaccharide cross-linking, calcium ion chelating technology. It consists of compact layer, inner waterproof layer, rubber mesh layer and outer waterproof layer. At present, the corn starch content of disposable tableware on the market is not high, and the price is also high.

第三种聚苯乙烯（PS）材质。聚苯乙烯俗称PS，是一种被广泛用于食品容器生产的材质。比如，婴儿用的奶瓶，一次性推入注射器等都使用了这种材质。PS材质具有耐酸碱，耐高温，无毒无味，抗菌等优点。由于PS材质的一次性餐具早出现在航空航班中，作为一次性使用的餐具供乘客使用。该餐具晶莹剔透，犹如水晶一般的高贵，大气，因而被称为“一次性航空水晶餐具”。

The third polystyrene (PS) material. Polystyrene, commonly known as PS, is a material widely used in the production of food containers. For example, baby bottles and disposable syringes are all made of this material. PS material has the advantages of acid and alkali resistance, high temperature resistance, non-toxicity, odorless, anti-bacterial and so on. Because the disposable tableware made of PS material first appeared in air flights, it is used as disposable tableware for passengers. The tableware is crystal clear, as noble as crystal, atmospheric, so it is called "disposable aviation crystal tableware".

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