餐盒已由泡沫飯盒逐漸轉(zhuǎn)向型飯盒原來(lái)的泡沫飯盒由于不耐高溫，且制作過(guò)程對(duì)環(huán)境造成污染而被淘汰，取而代之的有PP飯盒，紙制飯盒，木制飯盒，可降解飯盒等等。其中，PP與PS材質(zhì)均無(wú)味、熔點(diǎn)較高、可塑性強(qiáng)、生產(chǎn)簡(jiǎn)便及相對(duì)成本較低等特點(diǎn)，因而成了制造一次性快餐盒的主流材料。PP與PS的區(qū)別在于PP可以入微波爐，PS不可以高溫但是可以耐低溫，分辨方法PPE比PS材質(zhì)要軟，PS硬而脆，透明度PS更高。PP聚丙烯，具有機(jī)械性能和熱性能，適合飯菜的包裝。

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.

關(guān)于餐盒好壞的鑒別方法有什么呢？下面一次性紙餐盒廠(chǎng)家為您分析：

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

取一塊橘子皮，在發(fā)泡餐盒上摩擦數(shù)下，沒(méi)多久餐盒上被擦拭過(guò)的部分就溶解了，時(shí)間越長(zhǎng)，溶解得越嚴(yán)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.

橘子皮檢測(cè)法主要針對(duì)發(fā)泡餐盒，餐盒腐蝕速度越快的，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.

實(shí)驗(yàn)原理：檸檬、柳橙所含的成分，對(duì)聚苯乙烯材料的發(fā)泡餐盒有強(qiáng)烈的腐蝕性，當(dāng)用發(fā)泡餐盒裝含有檸檬柳橙成分的食物時(shí)，有害物質(zhì)可能就被一起食用了。而且，發(fā)泡餐盒在高溫時(shí)，可能會(huì)釋放出有毒有害物質(zhì)。

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.

取一個(gè)玻璃杯裝上水，從純聚丙烯(PP)塑料餐盒上撕下一小塊，全部放入玻璃杯內(nèi)，要完全浸入水中，看塑料片是否會(huì)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.

在家中實(shí)驗(yàn)時(shí)，可以不用把塑料餐盒撕裂，將完整的餐盒放入裝水的洗衣盆中即可，記得一定要將餐盒完全漫入水中。

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.

實(shí)驗(yàn)原理：純聚丙烯(PP)塑料餐盒，由于聚丙烯的密度小于1,漫入水中后會(huì)浮在水面上不純的聚丙烯(PP)塑料督盒，由于添加了其他物質(zhì)(如碳酸鈣、滑石粉等)，密度大于1,入水后會(huì)沉入水底。簡(jiǎn)單地說(shuō)，放入水中會(huì)下沉的，是劣質(zhì)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.

關(guān)于餐盒好壞的鑒別方法相關(guān)內(nèi)容就講解到這里了，希望能夠幫助到您，還有什么疑惑或者需求，就來(lái)我們網(wǎng)站http://gcqhszh.com咨詢(xún)！

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 http://gcqhszh.com consulting service