Nike Air Max 1 By The Hot Melt Caused Nike Air Max

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Thermal classification performance of sol no use by
(1) hot melt rate of classification by Binding
Binding books in order to ensure the quality of hot melt adhesive, when used, should be the speed of different devices use different types of hot melt adhesive. Binding rate of hot melt adhesives according to three types, namely, perfect binding rate was 3600 / hour, 8000 / hour, 10,000 / hour of speed glue, the glue-speed, high-speed glue. Hot melt adhesive open time and curing time and the speed of Binding has a close relationship. The opening hours of hot melt adhesive is hot melt adhesive to a brush on the surface of the material, then bonded to another surface of the material time. And the two adherends to be completed within the stipulated time nike air max 2011, so as to ensure the bond strength. Low-speed machine is open 15 ~ 20 seconds, medium-speed machine for 5 ~ 10 seconds, high-speed machine for 2 ~ 7 seconds. Hot melt adhesive curing time, is the book cover and the core bonding in a specified time after the cooling period of time to go through to flip or pressure. If you do not set hot melt adhesive curing and cooling on the flip, or cut, the back will result in deformation of cutting blade when the hot melt adhesive stick easily, the impact of quality books. Hot melt adhesive according to different types and curing time have long or short, should be different depending on the season Nike Air Max 1, a reasonable choice. Hot melt adhesive curing time is generally 3 ~ 5 minutes.
(2) hot melt adhesive according to the paper category
Are coated with the hot melt adhesive and hot melt adhesive used generally two types of paper. Different types of paper, suitable hot melt adhesive to use, since different surface finish of paper, permeability, thermal conductivity is different. Coated paper with high surface finish, poor wetting, heat fast, hot melt coated paper to fit the performance.
(3) hot melt adhesive binding process by Category
Gum and gum have side for lateral flow of hot melt glue used for low viscosity, opening hours, long curing time, bonding strength. Because the book side of the plastic required to achieve thin uniform, bonded firmly to ensure the book's quality and cutting requirements.
2. Hot melt adhesive should be noted in the use of some of the issues
(1) hot melt adhesive heating Should be preheated before use, the general warm-1 ~ 2 hours to reach the heating temperature liquid, then put in 160 ~ 180 plastic tank, used to boot. Strictly control the temperature, when the heating agent 170 , the bond strength up to 8.83 0.44N/cm. When the temperature rose to 180 , adhesive force decreased to 7.33 033N/cm. Fluidity, permeability will increase, but decrease the viscosity and strength, affecting the bond strength of books. When the glue when the temperature dropped to 155 , adhesive strength is only 5.22 0.25N/cm. Viscosity increase, rolling resistance and permeability are affected, hot melt adhesive will thicken, become brittle Ershi adhesive ineffective. Prevent unglued and loose, affecting the quality of book binding, heating temperature and the gel temperature was controlled at 170 ~ 180 range. To ensure perfect binding quality, regular cleaning of plastic pot, the aging and sediment removal. In addition, the Binding books according to climate change, adjust temperature, low temperature, the cold season, do not force plowing the back nike air max ltd 2, to avoid the cold brittle fracture, using the time required to relieve at room temperature.
(2) Thermal stability of hot melt adhesive
Thermal stability refers to the recycling or long after the present state of heating and reaction. If the thermal stability of the poor, will cause darkening of gum, viscosity increased, decreased permeability from surface and affect bond strength.
3. To prevent gum pot of hot melt preheating aging
(1) temper