新闻中心
Hot melt adhesive particles produced by legitimate manufacturers have a very low odor. Taking EVA based hot melt adhesive granules commonly used in book binding, packaging and sealing, and quick printing of graphics and text as an example, they are solid particles at room temperature and almost odorless; After heating and melting, there will be a slight odor, but qualified food grade and book grade products have a very light odor, which will dissipate in a few seconds in a ventilated environment.
The odor mainly comes from two aspects: one is that there are too many low molecular weight volatile compounds in the raw materials, and the other is that there are too many recycled materials mixed in. Pure new material and clean formula particles only have a very light wax smell when melted; If it is pungent, sour or even spicy to the eyes, it is mostly due to inferior materials or mixed with recycled materials. All particles of Sunlife hot melt adhesive are produced using new materials, and Guangzhou Sunlife Trading conducts odor and volatile matter testing on each batch to ensure that the workshop is user-friendly.
Q: Will the odor remain on the books when hot melt adhesive particles are used in the workshop of the book and magazine factory?
Answer: No. After the adhesive layer cools, the odor is basically sealed inside the adhesive, and readers cannot smell it after the book is completed, which meets the odor requirements of publications.
Q: Does a strong odor indicate toxicity?
Answer: It is not necessarily toxic, but a pungent smell usually means that there are many volatile substances, the formula is not clean, and long-term inhalation is not conducive to health. It is recommended to replace with qualified products.
Q: How to determine if the purchased hot melt adhesive particles have a qualified odor?
Answer: Take a small amount and melt it at around 180 ℃. Close it up and smell it lightly. A light wax smell is normal; If it is obviously pungent or irritating, it should be returned.
Sunlife hot melt adhesive from Guangzhou Sunlife Trading provides samples for trial use. The odor and bonding effect can be verified in small batches on our own production line before deciding on bulk purchases.
First answer: Having more fine powder does not necessarily mean poor quality, but it is worth asking a question Hot melt adhesive granulesA small amount of fine powder at the bottom of the bag is a normal phenomenon. Particles rub against each other during granulation, cutting, conveying, bagging, and long-distance transportation, inevitably producing powder. The […]
What is the reason why EVA hot melt adhesive does not stick? Some time ago, a customer asked us why we couldn’t stick books firmly when bonding. Through this small case, we will answer the question: What is the reason why hot melt adhesive does not stick? When bonding books, if EVA hot melt adhesive […]
In the wireless adhesive packaging process of books, the uneven thickness of the adhesive wire is a quality problem frequently encountered by printing factories and graphic and text fast printing factories. One side of the adhesive layer is too thick and overflowing, while the other side is too thin and debonding. This not only makes […]
Due to the fact that paper materials vary across different industries, we use different hot melt adhesives to bond the handles of paper bags, providing our customers with hot melt adhesive solutions for paper bags. This is not only for reinforcement but also to ensure the aesthetic appearance of the hand-held paper bags. More importantly, […]
