What are Hot Melt Adhesives?
Hot melts are thermoplastics that are used after melting the polymer beyond its melting point. The main advantage of hot melts over other forms of adhesives include:
Hot melt adhesives do not require a solvent. Hence, associated environmental issues are avoided.
They set rapidly and dispensing is easy to automate.
A smaller space is required for storage and use.
There is wide formulation latitude to meet a variety of costs and performance needs.
Hot melt adhesives are often referred to as hot melt glues. Both these terms are commonly used interchangeably in various industries.
Components of hot melt adhesives
Hot melt adhesives/glues majorly comprise of three components: a polymer/ blend of polymers, a tackifying resin, and a wax or oil. Wax and oil are used for the same purpose, the only difference is that oil is liquid, and waxes are solid. Apart from these ingredients, hot melt glue may include an antioxidant, filler, UV stabilizer, or a pigment, and others.
Hot melt glues require a delicate balancing of formulation components relative to their performance and processing properties. The major components of a hot melts and their role are:
The base polymer is the molecular backbone of the systems, and it is used to provide the inherent strength and chemical resistance as well as the application characteristics.
Tackifiers are added to improve initial adhesion and to modify the base polymer.
Processing oils and waxes are used to adjust viscosity and set times. Both tackifiers and processing materials will affect the glass transition temperature (Tg) and melting point of the final product.
Antioxidants are used to provide oxidation resistance - more for the polymer in the application state rather than in the final joint.
UV stabilizers or inhibitors are added to provide stability against exposure to light.
Fillers are used to fine-tune certain properties such as melt viscosity, thermal expansion coefficient, set time, etc.
ABOUT US
Zhejiang Good Adhesive Co., Ltd was established in 1996 in China, covers an area of more than 10000 square meters with annual output of 30000tons of environmental friendly hot melt adhesive series products base on EVA, polyolefin, elastomer, polyurethane, PA and animal protein.
Professional team
We have our own lab and R&D team, can provide you technical supports at any time.
Wide application range
The main application industries of hot melt adhesive include book binding, product packaging, filter, furniture, automobile, medical, aerospace, rail transit and other industries.
30000+Tons
Annual output
8
Production Line
100+M
Annual output value
500+
Business partner
1950-01
Material Office of Zhejiang Rezzsearch Institute of Chemcal Industry.
1990-11
Zhejiang Yida Adhesive Co.,Ltd. established.
2009-10
Zhejiang Good Adhesive Co.,Ltd. established.
2020-08
Guangzhou Gute Adhesion Co.,Ltd established.
2021-01
Completion of share reform.
Establish Shanghai Gute New Material Intelligent Manufacturing Research and Development Center.
Complete the renovation of equipment intelligent manufacturing -3.0, with an annual production capacity of 18000 tons.
2022-04
Establishment of Branch Hubei Gute Chemical New Material Co.,Ltd.
2023-02
Establishment of Jiangsu Gute New Material Technology Co., Ltd.
Companies We Have as Clients
We are looking for a cooperative partner to expand our business.
