一次性飯盒能否用微波爐加熱主要取決于其材質和標識，以下是具體分析及使用建議：

　　Whether disposable lunch boxes can be heated in a microwave mainly depends on their material and labeling. The following are specific analysis and usage suggestions:

　　1. 可加熱的材質：PP（聚丙烯）

　　1. Heatable material: PP (polypropylene)

　　標識要求：只有底部標有數字 5 或 PP 材質的一次性飯盒可以安全用于微波爐加熱。PP材質的熔點高達167℃，耐高溫性能較好，是唯一明確適合微波加熱的塑料類型。

　　Labeling requirement: Only disposable lunch boxes with the number 5 or PP material on the bottom can be safely used for microwave heating. The melting point of PP material is as high as 167 ℃, and it has good high temperature resistance, making it the only plastic type that is clearly suitable for microwave heating.

　　注意事項：

　　Notes:

　　需確認盒身和盒蓋均為PP材質。部分飯盒盒身為PP，但盒蓋可能是PET（1號）或PE（4號）材質，這些盒蓋不耐高溫，需取下后再加熱。

　　Please confirm that both the box body and lid are made of PP material. Some lunch box bodies are made of PP, but the lid may be made of PET (No. 1) or PE (No. 4) material. These box covers are not heat-resistant and need to be removed before heating.

　　若加熱后飯盒變形或產生異味，應立即停止使用并丟棄。

　　If the lunch box deforms or produces an odor after heating, it should be immediately stopped from use and discarded.

　　2. 不可加熱的材質

　　2. Non heatable materials

　　PET（1號）、PS（6號）等：如礦泉水瓶（PET）、奶茶杯蓋（PS）等，耐熱性差，高溫下可能釋放有害物質。

　　PET (No. 1), PS (No. 6), etc.: such as mineral water bottles (PET), milk tea cup lids (PS), etc., have poor heat resistance and may release harmful substances at high temperatures.

　　紙質飯盒：普通紙質飯盒易燃燒或變形；若覆有塑料膜（如PE或PLA淋膜），高溫可能導致膜層分解，不建議微波加熱。

　　Paper lunch box: Ordinary paper lunch boxes are prone to burning or deformation; If covered with plastic film (such as PE or PLA coating), high temperature may cause the film layer to decompose, and microwave heating is not recommended.

　　3. 其他風險提示

　　3. Other risk warnings

　　避免重復使用：一次性飯盒設計為單次使用，反復加熱或盛放油脂食物會加速有害物質析出。

　　Avoid repeated use: Disposable lunch boxes are designed for single use, and repeatedly heating or storing oily food can accelerate the release of harmful substances.

　　檢查標識：無明確材質標識或“微波爐適用”字樣的飯盒，可能是劣質產品，存在安全隱患。

　　Inspection label: Lunch boxes without clear material labeling or the words "suitable for microwave ovens" may be inferior products and pose safety hazards.

　　替代方案：更推薦使用玻璃、陶瓷等耐高溫容器加熱食物，安全性更高。

　　Alternative solution: It is more recommended to use high-temperature resistant containers such as glass and ceramics to heat food for higher safety.

　　總結

　　summary

　　安全操作步驟：

　　Safe operation steps:

　　① 查看飯盒底部是否為5號PP材質；② 取下非PP材質的盒蓋或包裝膜；③ 控制加熱時間，避免過熱；④ 加熱后檢查飯盒狀態。若不符合條件，建議更換為專用微波爐容器。

　　① Check if the bottom of the lunch box is made of PP material No. 5; ② Remove the non PP material box cover or packaging film; ③ Control heating time to avoid overheating; ④ Check the condition of the lunch box after heating. If the conditions are not met, it is recommended to replace it with a dedicated microwave container.

　　本文由 一次性外賣打包盒  友情奉獻.更多有關的知識請點擊  http://www.gaoyd.com/   真誠的態度.為您提供為全面的服務.更多有關的知識我們將會陸續向大家奉獻.敬請期待.

　　This article is a friendly contribution from a disposable takeaway packaging box For more related knowledge, please click http://www.gaoyd.com/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.