Is the top cover of the deluxe gift box covered with glue and curled edges? A case study of adhesive selection for the bonding of a sky and earth cover

Firstly, the result is that a high-end mooncake gift box factory often has curled edges and peeling glue on the pasted dough paper and box corners when making high-end mooncake gift boxes. After switching to Sunlife hot melt adhesive for fine decoration and pasting, adjusting the opening time and gluing process, the box corners fit snugly without warping, and the top and bottom covers fit smoothly. The return rate has decreased from 3% to below 0.5%.

Product difficulties

• The surface paper of the Tian Di Gai gift box is mostly special paper or laminated paper. Ordinary adhesive particles have slow initial adhesion and the box corners are prone to rebound and warping;
• The pasting area is large and there are many corners, requiring a long enough opening time for manual alignment and bonding;
• High end gift boxes have zero tolerance for appearance, and overflow, penetration, and bulging are all considered defective products.

Solution process

The factory will send the box samples and tissues to Guangzhou Sunlife Trading. The technical judgment problem lies in the short opening time and insufficient initial adhesion, which caused the corners to solidify before the adhesive was compacted. Solution: Use special adhesive particles for fine decoration pasting with longer opening time and mild initial adhesion to facilitate workers to easily package corners and align them; Accurate control of the amount of glue applied to avoid glue overflow and penetration; Apply appropriate pressure at the corners to ensure a snug fit. The first batch of 200 sets will be tested, and after passing the fitting, flipping, and storage tests, the quantity will be measured.

Delivery data

Summary of key points for selecting adhesive

The key to choosing glue for the high-end box of the Heaven and Earth Cover is twofold: first, the opening time should be long enough to allow time for manual corner alignment; The second is the balance between initial and final adhesion, which can both locate and firmly adhere. The film coated paper also requires a high initial adhesion formula. Guangzhou Sunlife Trading can recommend corresponding models based on the paper material and process rhythm.

Frequently Asked Questions

Q: Can the Tian Di Gai gift box be sealed with ordinary rubber granules?
Not recommended. The opening time of the sealing rubber particles is short, the initial adhesion is rapid, and it solidifies before the corners are aligned, making it easy to curl the edges. A special formula is required for fine decoration and pasting.

Q: What should I do if the coated paper always doesn’t stick firmly?
The film layer is smooth, and it is necessary to choose Sunlife hot melt adhesive special models with high initial adhesion and adhesive film coating, and apply pressure at the corners to significantly improve the bonding effect.

The experience of this case is that the edge curling and glue opening of the deluxe gift box often do not match the opening time and initial bonding process well. Choosing the right specialized adhesive particles can solve the problem.