A lot of times, We will judge that the product is worth to buy or not according to its packaging. Therefore, Businesses should put more attention on the packaging. It is very important to choose a manufacturer of packaging bag with reputation. However, There are somethings you should take into consideration when you inspect the goods. Here is the tips from LIRUI PACKAGING CO.,LTD to inspect goods whether the packaging bag is up to quality or not.
    1)Appearance: The packaging should not to be bubble, punch, water cut, sudden bar,  bad plasticizing, fisheye etc. The specification and thickness deviation which shall be stipulated in the deviation range.
    2)Stretching: The tensile strength and rupture ratio of packaging bag is reflected the quality of products when it is using. If it is failed, the packaging is easier to fracture and damage.
    3) Hygiene:You should do the test for evaporation residue (acetic acid, ethanol, n_hexane), potassium permanganate consumption, heavy metal, decoloring.Evaporation residue is reflected that it is possible to separate out the residue, heavy metal when the food packaging bag touch vinegar, wine, and oil and this kinds of liquid. The residue, heavy metal is unhealth to our human bodies. It is also influence the color, aroma, taste and eating of food quality.
    4) Environmental protection: The biodegradability of packaging bag is different to different products. They can be divided into photo degradation type, biological degradation type, environmental degradation type. The biodegradability of packaging bag is reflected to the  environmental acceptance ability when they are abandoned. If good, they can be fracture, differentiation and degradation, and ultimately become scrap by themself with the combined action of light and microorganisms. If no, the packaging bag will become “white pollution”.

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