Disposable lunch boxes have a wide range of material classifications, and the production processes of products of different materials are also very different. The so-called standard products and inferior products are not black and white. Judge or define.
Here we will sort out the quality differences of PP plastic disposable (blister) lunch boxes that are favored in the catering market, combined with the reflections of different levels of the market, and organize a set of safe consumption guidelines from an objective perspective. For the reference of consumers, so that everyone can have a deeper understanding of PP plastic disposable (blister) lunch boxes.
One material. 1. Standard lunch box: 100% PP food-grade new materials are used, with zero environmental protection and safety. (Pure PP material is uniform in thickness, transparent in primary colors, elastic and tough when bent) 2. Inferior lunch boxes: recycled materials plus non-food grade fillers, or excessive use of mixed materials. (Most of them are gray-black. The color is uneven and the thickness is different after adding the filler. The addition is generally white or black. The cover is mostly processed into a soft and thin transparent PS material)
Second design. 1. Standard: The design of load bearing and compression is reasonable, relatively thick, heavy and hard, focusing on practicality. The four-angle inclination is small and the capacity is large. 2. Inferior quality: the material is soft and thin, the box is flat, (simple production, looks generous), the inclination of the four corners is large, and the capacity is small.
Three craftsmanship. 1. Standard meal box: Use the mechanical equipment of a company with QS certification. The meal box is formed in place, beautiful and textured, and the high degree of tight fit between the box and the lid is guaranteed. 2. Poor quality lunch box: The processing machinery is simple. In order to save costs, the process is in one step, the lunch box is irregularly formed, the edges are rough and burr, there is no half-ear to cover, and the sealing of the lid is not guaranteed.
How do consumers ensure the safe use of disposable lunch boxes?
1. Choose a supplier with good credibility and check the provenance of the product in detail.
2. The bottom or cover of the regular product should be printed with QS certification number and material identification symbol, such as ‘’ symbol, which represents PP material.
3. If you do not understand the performance of the product, try to avoid using it in a high temperature state of more than 80 degrees Celsius.
4. When purchasing, it is best to choose primary color transparent products with high safety factor.
5. No odor during heating, no deformation and distortion and soften into a safe lunch box.