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| HOW TO CHOOSE HOLT-MELT ADHESIVES | ||
| "G.M"series hot melt adhesives , all series are developed and manufactured according to needs of different industries.For the different avidities of the holt melt adhesives with adherence,to make the hot melt adhesives better show their viscosities, the following considerations : 1.Colors:Requirement s for colors of hot-melt adhesives shoud be different from different colors of adherends. Yellow hot melt is commendatory to be used if no special requirement for colors of adherends. Generally speaking, the viscosity of yellow hot melt adhensives is better than white ones 2.Surface treatment of adherence. Hot-melt adhesives have not such requirements to surface treatment as other adhesion agents.In order for the hot melt adhesives to show bonding property , the dust, oil on the surface should be treated properly. 3.Operating time.quick fast operations is one of prominent characterstics of hot melt adhesives. The time is about 15 seconds. Widely equiped with modern production method-assembly line, the requirement for operation time will get shorter and shorter, for example,operation time of book binding and speaker making is about 5 seconds. 4.Temperature Resistance. Hot melt adhesives are sensitive to temperature.Once the temperature rises to a certain height, the hot melt adhesives begin to soften. The hot melt become crisp when the temperature is lower than a certain degree, So environmentali temperature of products should be taken into account when choosing hot-melt adhesives. 5.Viscosity. The viscosity of hot melt adhesives consist of initial viscosity and later viscosity.Only on condition that the initial viscosity and later viscosity are the same, hot melt adhesives and the adherend can keep stable. During the course of production of hot melt adhesives , their oxidization resistance ,halogen resistance ,acid&alkali resistance and plasticity reinforcemetn must be guaranteed. The viscosity of hot melt adhesives is different for the difference of the adherends . different hot melt should be choosen according to different materials. |
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| HOW TO CHOOSE THE HOT MELT GLUE GUN | ||
| 1.Please examine whether the power wire is in good condition and the bracket is provided and flow backwards with the adhesive gun handled. 2.The adhesives gun must be pre-heated before using, please don't place the glue gun erectly on the tables. 3.Please keep the surface of the hot melt adhesives strip and avoid pluging the mouth of guns up. 4.During the course of using the gun, if no glue comes from the mouth of the gun, please check the heat radiation of the gun; The reason in abnormal heat radiation: 1 The power is not correctly inserted of the gun; 2 The gun is burned out for short circuit. The reason in normal heat radiation: 1.When the mouth of the gun is pluged up by impurities, please contact professional personnel to repair it. 2. When the flow backwards occur leading to widen of the strip, you need to circumrotate the strip for a circle , tear a small moiety to shuck off the wider, continue to use it. 3.Before using the adhesive strip up, try your best not to draw the adhesive strip from the adhesive gun 4.When flow backwards occurs to the adhesive strip, please stop using the gun. after the professional personnel clean the refluent adhesives . |
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| USE GENERAL KNOWLEDGE | ||
| When the glue is used in the objects which are easy to be endothermic,such as metals,ceramics,glasses in winter,the glue liquid should be avoided to touch the cool face of objects,as it can be hardened and reduced the viscidity.If the faces of objects can be heated in advance,the result is remarkable. | ||