What is the pressure sensitive adhesive?


PSA (pressure sensitive adhesive, PSA), refers to a kind of adhesive which is sensitive to pressure, easily stick to things with little pressure and do not need to use solvent or other visual aids. Hot melt pressure sensitive adhesive is the third generation after the solvent pressure sensitive adhesive and emulsive pressure sensitive adhesive,compared with the two former, hot melt pressure sensitive adhesive has no solvent, more conducive to environmental protection and safety production, high efficiency production and relatively  low production costs. So now countries around the world are vigorously developing the hot melt pressure sensitive adhesive.

pressure sensitive adhesive

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The notice of using EVA hot melt glue during book binding


EVA hot melt adhesive is not the same as usual glue,in terms of its features, you would have to pay attentions during the book binding manufacturing, see as below:

1.Get to know its technical data and types firstly. Different hot melt glue has big difference of the openning time,curing time, especially you have to notice the temperature effect varying from summer to winter.

2.during the usage of hot melt,pls not heat by fire, remember to heated by the help of spacer bush oil, or by the sealed electric heating board.

3.Pre-heat the melting container for nearly 2 hours.

4.make sure that there is suitable glue in the melting container,to avoid that some glue gets aged.

5.Confirm all the bonding process is done,once confronted with fault,take out the book.

6.when the machines stops working,not forget to turn the melting device off.

7.Keep right melting temperature according to hot melt supplier’s advice.

8.Clean the kettle and melting container on time,to protect the melting system from impurity.

Filter hot melt adhesive


Tongde Hot melt Adhesive for filter is able to solve the problems of
sticking,sizing,sealing during the filters manufacturing,it is appllied
in the filter pleat,frame assembly and center part. mainly covers air filter, purifier filer, and automobile filter and oil filter etc. This kind of adhesive not only has excellent adhesion and strength,but also has nice performance of heat resistance and oil hesistance.

1.Filter Pleat Bonding    Click to see filter pleat adhesiveFilter paper glue

2.Filter Center Part Bonding   click to see filter center part adhesive Continue reading →

The New Technologies of hot melt adhesive

since hot melt adhesive was advented,due to the strong adhesive, curing speed, etc., it is widely used in food packaging, bookbinding,disposable hygiene products industry, the furniture industry, the label industry and other fields.

1.Low temperature hot melt adhesive: 

    Low temperature hot melt adhesive breakup the limits of the general usage of conventional hot melt adhesive.Its normal operating temperature is only 110 ℃ ~ 130 ℃, low temperature hot melt adhesive is below 30℃ than traditional hot melt adhesive. Low temperature hot melt adhesives have obvious lower viscosity values compared to traditional to meet the requirements of the coating process at a low temperature operating conditions.The direct benefits of low temperature hot melt adhesive is saving electricity and machine maintenance costs.

A large number of practical applications show that using low temperature hot melt adhesive can save customers approximately 15% of the electricity with the same hot melt machine.Because low temperature hot melt adhesive almost complete absence of crust, coke and other aging at 110 ℃ ~ 130 ℃, making machine
maintenance costs are significantly reduced. More importantly, low temperature hot melt adhesive PE film will not burn.

2.Hydrophilic hot melt adhesive:     Conventional hot melt adhesive generally hydrophobic, hydrophilic hot melt adhesive through a special formula to make it hydrophilic, each a hydrophilic hot melt adhesive applications can be given to higher value-added products, so that products manufacturer make effectively product difference Alienation in the current highly competitive market, and ultimately meet to consumers demands.

3.The hot melt adhesive of other new technologies: 

In addition to these aspects, the new hot melt adhesive technologies include: anti-oil hot-melt adhesives; hot melt adhesive spray suitable for high-frequency; high wet strength Hot-melt adhesives; biodegradable hot melt adhesive and so on.




What is EVA Hot Melt Adhesive?

EVA hot melt adhesive is one kind of 100% solid fusible polymer that not contain water and no need of solvent. When heated, EVA hot melt adhesive would turn to be fliquid adhesive while under constant temperature it is 100% solid. Its color usually shows light yellow or white and clear white.

As we know, the main componets of hot melt adhesive includes common resin EVA and some tackifier,viscosity adjusting agents,antioxidant etc. Therefore,tongde hot melt adhesive
would have below features:
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Congratulations To 2016 Tongde’s Annual Meeting!


After Years of Goat danced for harvest years, Years of Monkey will be coming! On January 24th, 2016, at the occasion of this New Year,
Tognde New Materials held New Year’s party in Shenzhen Harmona Hotel,together with Brother Company Yunlin Chemical and Holeo New Materials.

Time flies, the 2015 has gone without any sound,2016 comes with colorful hope, in the past year, Tongders work together, hand in hand, sacrificed hard work in exchange for the customer’s approval, we have made gratifying achievements.Today all Tongders gathered together to summarize 2015,looking back the past, and looking out for the new year!


Firstly Tongde staff Jack and Bob presented a festival flute ensemble as the opening performance, while enthusiastic General Lee could not help himself and performed on stage for everyone to play
Tai chi , get the party to a new climax.
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Those factors matter how to choose hot glue?


Hot melt glue is 100% solid fusible polymer that not contain water and no need of solvent. This kind of adhesive is widely used in book binding, filter assembly adhesion,EPE packaging adhesion,box sealing and so on.

But how to choose right Adhesive? which factors would be involved during hot glue selection?
Let’s come to notice following considerations.

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Tongde Hot Glue For EPE Foam Materials application case


EPE Foam is a kind of new type environmental friendly packaging materials and filler,much better than the traditional packing materials.

Tongde EPE Hot Glue, white granule, EVA based,has good advantages of yellowing-resistance,high-and low-temperature resistace


note: this article is transfer from www.tdhotmeltglue.com