餐盒已由泡沫饭盒逐渐转向型饭盒原来的泡沫饭盒由于不耐高温，且制作过程对环境造成污染而被淘汰，取而代之的有PP饭盒，纸制饭盒，木制饭盒，可降解饭盒等等。其中，PP与PS材质均无味、熔点较高、可塑性强、生产简便及相对成本较低等特点，因而成了制造一次性快餐盒的主流材料。PP与PS的区别在于PP可以入微波炉，PS不可以高温但是可以耐低温，分辨方法PPE比PS材质要软，PS硬而脆，透明度PS更高。PP聚丙烯，具有机械性能和热性能，适合饭菜的包装。

The lunch box has gradually changed from foam lunch box to type lunch box. The original foam lunch box was eliminated due to its high temperature resistance and environmental pollution caused by the manufacturing process. Instead, PP lunch boxes, paper lunch boxes, wooden lunch boxes, biodegradable lunch boxes, etc. Among them, PP and PS materials are odorless, have high melting points, strong plasticity, easy production, and relatively low costs, making them the mainstream materials for manufacturing disposable fast food boxes. The difference between PP and PS is that PP can be put into the microwave, while PS cannot be high-temperature but can withstand low temperatures. The resolution method is that PPE is softer than PS material, PS is hard and brittle, and PS has higher transparency. PP polypropylene, with mechanical and thermal properties, is suitable for packaging meals.

关于餐盒好坏的鉴别方法有什么呢？下面一次性纸餐盒厂家为您分析：

What are the methods for identifying the quality of a meal box? The manufacturer of disposable paper lunch boxes will analyze for you:

取一块橘子皮，在发泡餐盒上摩擦数下，没多久餐盒上被擦拭过的部分就溶解了，时间越长，溶解得越严重。

Take a piece of orange peel and rub it several times on the foam lunch box. Before long, the wiped part on the lunch box dissolves. The longer the time, the more severe the dissolution.

橘子皮检测法主要针对发泡餐盒，餐盒腐蚀速度越快的，其含有毒成分越多。

The orange peel detection method is mainly aimed at foaming lunch boxes. The faster the corrosion rate of the lunch boxes, the more toxic they contain.

实验原理：柠檬、柳橙所含的成分，对聚苯乙烯材料的发泡餐盒有强烈的腐蚀性，当用发泡餐盒装含有柠檬柳橙成分的食物时，有害物质可能就被一起食用了。而且，发泡餐盒在高温时，可能会释放出有毒有害物质。

Experimental principle: The ingredients contained in lemons and oranges have strong corrosiveness to polystyrene foam lunch boxes. When using foam lunch boxes to pack food containing lemon and orange ingredients, harmful substances may be consumed together. Moreover, foaming lunch boxes may release toxic and harmful substances at high temperatures.

取一个玻璃杯装上水，从纯聚丙烯(PP)塑料餐盒上撕下一小块，全部放入玻璃杯内，要完全浸入水中，看塑料片是否会浮出水面。

Take a glass cup and fill it with water. Tear a small piece from a pure polypropylene (PP) plastic lunch box and put it all into the glass. Completely immerse it in water to see if the plastic pieces will surface.

在家中实验时，可以不用把塑料餐盒撕裂，将完整的餐盒放入装水的洗衣盆中即可，记得一定要将餐盒完全漫入水中。

When conducting experiments at home, it is not necessary to tear the plastic lunch box apart. Simply place the complete lunch box in the washing basin containing water, and remember to completely immerse the lunch box in the water.

实验原理：纯聚丙烯(PP)塑料餐盒，由于聚丙烯的密度小于1,漫入水中后会浮在水面上不纯的聚丙烯(PP)塑料督盒，由于添加了其他物质(如碳酸钙、滑石粉等)，密度大于1,入水后会沉入水底。简单地说，放入水中会下沉的，是劣质的塑料餐盒。

Experimental principle: Pure polypropylene (PP) plastic lunch boxes. Due to the density of polypropylene being less than 1, the impure polypropylene (PP) plastic lunch boxes will float on the water surface after being submerged. Due to the addition of other substances (such as calcium carbonate, talcum powder, etc.), the density is greater than 1, and after being submerged, they will sink to the bottom of the water. Simply put, putting it into water will sink, it's a low-quality plastic lunch box.

关于餐盒好坏的鉴别方法相关内容就讲解到这里了，希望能够帮助到您，还有什么疑惑或者需求，就来我们网站https://www.sdynbz.com咨询！

That's all for the identification methods of the quality of the lunch box. I hope it can help you. If you have any doubts or needs, please come to our website https://www.sdynbz.com consulting service