

PUR 1916
PUR 1916 is a reactive polyurethane hot melt adhesive, a white solid; it has a moderate open time, high initial tack, and is not prone to bubbling, making it suitable for a variety of materials. After curing, it exhibits high adhesive strength and excellent water, temperature, cold, and solvent resistance.
Product Parameters
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Solid content |
100% |
Viscosity |
~12000 (Brookfield mPa.s/120ºC) |
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Shelf life |
12 months in a dry, cool place. Follow the "first-in, first-out" principle. |
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Application Guide
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Workshop Environment |
Temperature |
· 10-35℃ |
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Relative Humidity |
· 10-80% |
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Material Requirements |
Board Material |
· The board material must have a flat, clean surface, free of oil and dust. |
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Laminating Material |
· The plastic film must have a good primer coating with a surface energy greater than 36 mN/m; HPL must be properly sanded. |
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Process Steps |
Opening Inspection |
· Before opening the drum and loading it into the machine, check its appearance for any abnormalities or skin formation. If skin is present, take appropriate measures. |
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Board Dust Removal |
· Check the brush rollers and dust collector for proper functioning |
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Board Preheating |
· If the workshop temperature is below 15℃, open the drying tunnel. |
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Equipment Temperature Setting |
· The pressure plate and throat temperature should be around 125℃ to ensure timely glue supply; it should not be too high; · The glue temperature in the glue tank should be 120-140℃. Check for significant temperature deviations along the length of the glue application roller; · The glue surface temperature of the glue application roller should be 115-125℃. |
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Glue Application Amount |
· Adjust the amount between 35-120 g/m² depending on the material. Measure the glue application amount regularly. |
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Lamination |
· If the workshop temperature is below 15℃, the bonding material should ideally be preheated to above 15℃. · Operate as quickly as possible, preferably within 1 minute of applying the adhesive and then rolling the lamination. · In winter, it is recommended to open the drying tunnel to extend the open time and ensure the adhesive film temperature is above 30℃ before lamination. |
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Rolling |
· The pressure should be applied evenly along the length of the roller at a pressure of 2-4 bar. After curing, the material can be stacked and transported immediately after production. It is recommended to cure for 24 hours before machining. |
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Curing |
· After production, the products can be stacked and transported. It is recommended to allow them to cure for 24 hours before machining. · If subsequent processes involve painting or exposure to high temperatures, please consult technical personnel regarding the curing time. |
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On-site Quality Control |
· Appearance: Smooth surface, free from defects such as orange peel, bubbles, and particles; · Adhesive Strength: No rebound after production; after cooling, the edges should not be pulled up; factory tensile strength and material breakage should be within acceptable limits. |
Other Precautions
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Cleaning |
· At the end of each production day, clean the rubber rollers with a cleaning agent until the surface is dry. |
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Pressing |
· To prevent bubbling and rebound in summer, composite boards can be placed in a cold press for several hours under extreme conditions. |
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Expired Products |
· If the product is past its expiration date, first check for skin formation. If the appearance and viscosity do not change significantly after melting, it can be used normally. |
本文中所包含的信息,尤其是对于我们产品应用的建议,都是基于我们的知识与经验。由于使用材料的不同而且我们无法控制多变的生产条件,强烈建议系统测试,以确定产品对特定工艺与应用的适应性。除非有重大过失或虚假意图,对以上信息和任何口头建议,我们不承担任何责任。
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