Inspection method of the customized paper cup rolls raw material near me:
1. Check the appearance: The first thing is to observe whether the appearance of the customized paper cup rolls raw material near me is smooth and there is no abnormality.
2. Check whether the material composition meets the hygienic indicators: that is, whether the heavy metals, fluorescent substances, decolorization tests and microbial content of the customized paper cup rolls raw material near me exceed the standard, and whether the evaporation residue and potassium permanganate consumption of the paper cup rolls raw material meet the hygienic indicators.
3. Check whether the specifications and dimensions meet the standard: use a sampler to sample the gram weight of the base paper, and then place the sample of the customized paper cup rolls raw material near me on an electronic scale with an accuracy of 0.01 gram, and the weighing gram weight is the base paper and PE composite rear weight. Put the weighed sample of the customized paper cup rolls raw material into ordinary ethanol solution, soak it for 20 minutes, separate the PE film from the base paper, wash it, and dry it. Then weighing the weight of the PE film. The gram weight of the base paper is obtained by subtracting the weight of the pe film from the total weight of the customized paper cup rolls raw material. The width of the paper cup roll stock is measured with a tape measure with an accuracy of one millimeter.
