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Thread-sewn perfect bindingStill need to use hot melt adhesive particlesThe only difference is the dosage and location compared to wireless adhesive packaging. The sewing thread connects the book stickers one by one, solving the root problem of loose pages in the text; But the smoothness of the book back, the fit between the spine and the cover, and the stiffness of the finished product still rely on hot melt adhesive. Simply put, lock thread is responsible for “preventing pages from falling off”, while hot melt adhesive is responsible for “shaping the book”. The two are not interchangeable.
On the actual production line, hot melt adhesive particles are mainly used in three positions:
| Comparison item | Thread-sewn perfect binding | perfect binding |
|---|---|---|
| Glue usage | Less (book stickers sewn together) | More (completely glued into books) |
| Opening hours | Moderate enough | Strict requirements, matching machine speed |
| Page drop risk | Low, adhesive only assists | High, glue is the main force |
| Suitable category | Albums, yearbooks, textbooks | Paperback book, instruction manual |
When making lock thread adhesive, priority should be given to selectingMedium to low temperature, good fluidity, and strong permeabilityEVA hot melt adhesive particles to avoid high viscosity clogging of grooves; If the hardcover book ring lining and stopper cloth are fixed, use a model with higher initial adhesion. Guangzhou Sunlife Trading (Sunlife Hot Melt Adhesive) has a mature ratio of back adhesive and side adhesive for book and magazine binding. When customers change the thread, they can adjust the melt adhesive temperature (usually 150-170 ℃) according to the thickness of the book and the machine speed to ensure stable shipment.
Q1: Can we use lockwire instead of glue and completely avoid using hot melt adhesive?
No. Lockthread only solves the connection of the inner text. Without glue applied to the book back, the finished product will become loose and the spine will have no stiffness, making it impossible to form a book.
Q2: Is it a glue problem with the missing pages of the lock book?
Most likely not. When a page falls off in a lockstitch book, first check the distance between the lockstitch needles and whether the book cover is loose. Adhesive only affects the smoothness of the book back and the fit of the cover.
Q3: Can lockwire and wireless share the same adhesive particle?
Universal book and magazine adhesive particles can be shared, but it is recommended to use a separate high initial adhesion model for the fine binding lock thread, as the sealing ring liner is more stable.
lookHot melt adhesive granulesTest report, first capture four numbers:softening pointDetermine whether the finished product is heat-resistant or not,melt viscosity Deciding whether to apply the glue smoothly or not,Opening hoursDeciding whether it fits your machine speed,Ash and moisture contentDeciding whether the machine will be blocked or carbonized. The rest of the projects are auxiliary, and these […]
The common problem is that the film cover cannot stick to the book cover After the surface of the hardcover book cover (waist cover/outer cover) is coated with film, the surface energy of the film layer is extremely low,hot melt adhesive pelletsDifficult to wet and penetrate, resulting in weak adhesion between the protective cover and […]
First, correct the conclusion: Hot melt adhesive particles do not have better viscosity at higher temperatures. Heating for a long time above the recommended temperature of 10 ℃ will cause the colloid to oxidize and degrade, resulting in a decrease in adhesive strength instead of an increase. It can also cause a series of problems […]
Running a business faces enough challenges, so we want to ensure that we provide high-quality hot melt adhesive for your business to ensure your and your customers’ satisfaction. Packaging is an important component of many businesses, but sometimes its benefits are overlooked. Manufacturers rely on packaging to protect products during transportation, serve as a brand […]
