Aluminum foil bag detection method, can use!

Aluminum foil bag has excellent barrier property, heat sealing, moisture resistance, and acid resistance, alkali resistance, wear resistance, and therefore is widely used in apparel, clothing, cosmetics, food packaging. As people to the rising of the aluminum foil bag quality requirements, the quality of the aluminum bag testing is becoming more and more important. Here, professional manufacturer of flexible packaging is how to summarize on the aluminum foil bag packing appearance visual inspection, meanwhile including compound bag flatness, check of transparency and so on. First used to detect composite bag looks have significant scratches and pinhole, pincer-like device has no pollution, etc. 1, aluminum foil bag using appearance visual inspection to check the quality center place the compound aluminum foil bag hand, quietly shaking at 40 w fluorescent lamp, through the reflection of compound aluminum foil bag appearance, can be clearly found that the compound aluminum foil bag appearance whether there is a scratch or mark, the industry is often referred to as & other; Bag surface drawing & throughout; 。 Assume that drawing is serious, should according to the practice situation, finding defects address, will affect the fell to the lowest point, to ensure product quality. Let's after query found the wiredrawing phenomenon was probably caused by unclean bag making machine lead guide roller, therefore it is important to ensure that guide roller clean. In addition, the guide roll back the same compound aluminum foil bag would produce wire drawing defects. Guide roll roll not more reason is caused by lack of oil bearing, so good lubrication is the root of a bearing rolling end conditions. 2, the compound aluminum foil bag flatness check the concrete measures are: to extract several zhang products & other bag sample; Air-to-ground & throughout; Cast down, make its natural ground and a place to clean, inquire the circumstance of compound aluminum foil bag after landing. Assume that twists and turns, the compound aluminum foil bag landing become warped outward or inward arch, is the compound aluminum foil bag flatness, clarify flatness conversely. Constitute the reasons of the poor flatness generally have the following: bag temperature on the high side, the damaged stiffness of the stress of the compound aluminum foil bag inside, Structure is not reasonable; Thickness of the material itself is not equal. Composite aggregate thickness not crossed 80 & mu; M, are prone to the phenomenon of roughness variation. 3, visual inspection appearance also check some products due to the large area of transparency without pictures, transparency is particularly important. Transparency of the detection method is: extracting a products bags, through the indoor light source directly query, assuming the blanks have & other Pitting & throughout; 、“ Ring & throughout; 、“ Mist & throughout; Wait for a phenomenon, explain transparency is poor, conversely indicating transparency. Constitute the reasons of the poor transparency are various, for example: in the composite, due to the composite adhesive solution itself color slants yellow or red, transferred to the compound bag will generate the corresponding partial color, affect its transparency; Assume that material itself transparency is poor, have & other; Mist & throughout; , will also affect its transparency, so when the materials into the warehouse should be strictly the quality pass, do not qualified materials into the warehouse. In addition, the composite materials of different transparency is different also, such as flow delay the transparency of the CPP is much taller than the transparency of blow molding co-extrusion CPP.
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