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Aluminum foil coated paper has a layer of metal film on its surface, which is dense, smooth, and has low surface energy,Hot melt adhesive granulesIt is difficult to wet after coating, and the initial adhesion is much lower than that of copperplate paper or kraft paper. Many packaging factories have reported that “even when the temperature is high and the amount of glue applied is sufficient, it cannot stick”, and the fundamental reason is that the glue type is incorrect – the universal EVA hot melt adhesive particles have insufficient affinity for low surface energy materials, and high adhesion specialized models need to be selected.
It is recommended to use modified EVA or APAO based hot melt adhesive particles with a higher proportion of tackifying resin. This type of adhesive has a moderate softening point (80-95 ° C), a slightly longer opening time, and can be fully wetted on the aluminum foil surface before curing. The peel strength can reach 4N/cm or more. Sunlife hot melt adhesive has launched a special model for aluminum foil coating scenarios. After testing by multiple cosmetics box factories, the bonding strength has increased from 60% of universal adhesive to over 95%.
Quick print shops often encounter orders with small quantities, multiple sheets, multiple covers, and tight delivery times. A more practical approach than searching for “universal binding glue” is to establish a process for confirmation, trial assembly, and parameter retention before changing orders. This article explains how to reduce rework from daily order taking scenarios. Core […]
How to use pearl cotton hot melt adhesive? High pressure polyethylene polyurethane foam is a kind of non chemical closed cell structure, also called EPE pearl cotton, which is a new environmental protection packaging product. It consists of thousands of individual bubbles made of high pressure polyethylene grease through physical polyurethane foam. The conventional polyurethane […]
Direct answer: One kilogram of hot melt adhesive granules specifically designed for books and periodicals, estimated to be able to hold approximately 80-120 books in a common A4 booklet (about 150 pages, with a book back length of about 29.7 centimeters); There are more pocket books and thin books, up to 150 or more; Thick […]
More and more books are using EVA hot melt adhesive for binding process. Almost all of them are used in large, medium, and small processing plants across the country. There will still be an upward trend in the future. This is because using this adhesive results in fast book publishing speed, short cycle time, aesthetically […]
