Sturdy disposable burger box

Sturdy disposable burger box   Usually buy burgers, has anyone found that there is this phenomenon, that is, some with a paper package, some with a box, and there is a box with a paper package of burgers. Why is there such a situation? In fact, it is mainly for the different nature of the burger itself to choose what to pack. As far as the product itself is concerned, the paper wrapped are generally with juice, paper can avoid juice splash, and this kind of burger meat and bread friction is small, not wrapped if it is easy to fall apart. Fried meat burger is generally directly into the box, on the one hand, can be breathable to ensure that the crispy fried food. On the other hand, to avoid being squeezed. On the other hand, from the operating cost considerations. The cheaper ones will choose to use paper wrapping.