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Matching principle in one sentence:The faster the machine speed, the faster the required curing and the shorter the opening time; If the machine speed is slow or the workpiece is large and needs to be aligned over a long distance, it should be fixed and opened slowly insteadChoosing the wrong direction is either due to poor adhesion or loose edges during wire drawing, and cannot be repaired by adjusting the temperature.
| Comparison item | Quick fix type | Slow solidification type |
|---|---|---|
| Opening hours | 2–5 s | 8–15 s |
| curing time | 1–3 s | 4–8 s |
| Adapt to machine speed | High speed sealing and high-speed pasting of boxes | Medium low speed adhesive bonding, large format manual bonding |
| Typical advantages | Stacking can be done offline, with a tight rhythm | Adjustable alignment for more thorough penetration |
| Typical risks | If not pressed in time, the skin will already form and become sticky | Displacement still occurs after compression, with edges and corners overflowing |
Q: Can we increase the temperature to make slow solidification faster?
Answer: No. Heating only reduces viscosity, but prolongs the time of loss of viscosity and accelerates carbonization, which is a typical reverse operation.
Q: How to choose between running multiple tasks on one line?
Answer: Choose the main adhesive according to the largest proportion and the most tight rhythm of the live parts, prepare another one to deal with special live parts, and write the switching rules clearly on the process card.
Sunlife provided by Guangzhou Sunlife Tradinghot melt adhesiveAccording to the opening time, corresponding grades can be recommended based on your model, machine speed, and compression section length, and initial parameters for temperature machine speed comparison can be provided to reduce machine trial and error.
Choose hot melt adhesive granules and focus on 7 key parameters: softening point, melt viscosity, opening time, curing time, initial adhesion, temperature resistance range, color and appearance. This article compiles the meanings, common ranges, and selection points of each parameter into a table, which can be directly compared and used by procurement and technology. List […]
Have you also encountered these binding difficulties?After binding copperplate paper picture books and magazines, the spine of the book is prone to peeling and falling pages; On high-speed production lines, colloidal wire drawing scratches dirty paper, resulting in a high rework rate; After being stored for a period of time, the spine of the book […]
When pasting hardcover book cover cloth (flower cover cloth on both ends of the spine), it should be selectedHot melt adhesive particles for book and magazine binding with high initial adhesion, short opening time (3-6 seconds), and softening point of 80-95 ℃This process requires a small amount of glue, a narrow area, and quick positioning. […]
Where does batch color difference come from? hot melt adhesive pelletsThe color depends on the natural color of the EVA resin batch, the type of tackifying resin, the whiteness of the filler, and the amount of coloring agent added. Small fluctuations in each batch of raw materials can lead to color differences in the finished […]
