The production process of the paper egg tray is a new production method of the paper egg tray. Compared with the traditional paper egg tray, this kind of production and manufacturing method has a great development in technology. Paper egg trays are a good type of packaging. Compared with traditional plastic egg trays, it is a paper egg tray constructed entirely of paper. Since the product is very warmly welcomed, the paper tray manufacturers undoubtedly have higher specifications for the production quality of the paper egg trays. Then, what quality regulations are there for the paper egg trays?
(1) Appearance: The appearance of the paper egg tray should meet the following requirements:
① The paper tray and egg tray should be shiny, without obvious defects such as out-of-round, dented, or inclined.
②The barrel is smooth and clean, without damage to mechanical equipment, no wrinkles, no degumming, uniform paint sizing, no leakage, no bubbles, and no significant loss of gloss.
③Round rolling without paper tongue.
④Electric welding of barrel hoop is firm and level, no burn through or empty welding, no obvious rust, peeling and cracking.
⑤The sealer is firmly connected and easy to open. After closing, the sealing cap and the bottom of the barrel can be closed well.
⑥The hot-dip galvanized or sprayed barrel hoop and closure should be bright and not fall off.
⑦The packaging and printing pictures are clear, well-proportioned, strong adhesion, no ink running.
⑧The inside and outside of the paper tray is cleaned up and there is no oil trace.
(2) Characteristic testing: testing new items includes vertical impact drop test, stacking test, shear stress test, etc. The test piece shall be prepared for 4h at a temperature of 23±2℃ and an air humidity of (50±5)% in accordance with the requirements of GB4857.2, and the test shall be carried out within 5min after removal.
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