一塊合格的中空玻璃不僅在于規范的操作流程與完美的工藝技術，更需要能滿足中空玻璃性能的中空玻璃加工設備和與其相關的密封材料。不同的中空玻璃的密封差異可能讓中空玻璃終呈現的工藝成品以及綜合性能不同。
A qualified insulating glass not only lies in the standardized operation process and perfect process technology, but also needs insulating glass processing equipment and related sealing materials that can meet the performance of insulating glass. The sealing difference of different insulating glass may make the final process finished products and comprehensive properties of insulating glass different.
中空玻璃的密封主要采用密封膠，起到中空玻璃的密封作用。中空玻璃的密封，除紫外線照射是測試中空玻璃密封膠是否含有影響視線的有機揮發物外，另外四項指標“密封性能、初始露點、高溫高濕、氣候循環”，都是檢測中空玻璃在各種環境下的密封性能的。中空玻璃的密封主要采用密封膠，起到中空玻璃的密封作用。
The sealing of insulating glass mainly adopts sealant, which plays the sealing role of insulating glass. For the sealing of insulating glass, in addition to ultraviolet radiation, which is used to test whether the insulating glass sealant contains organic volatiles that affect the line of sight, the other four indicators "sealing performance, initial dew point, high temperature and humidity and climate cycle" are used to test the sealing performance of insulating glass in various environments. The sealing of insulating glass mainly adopts sealant, which plays the sealing role of insulating glass.
槽鋁式雙道密封中空玻璃第一道密封用丁基膠，具有極低的水蒸氣透過率；第二道密封膠主要有聚硫膠和硅酮膠。間隔鋁框宜采用連續長管彎角式，接頭處應用丁基膠做密封處理；間隔鋁框如采用四角插接式，其各個接頭處亦應用丁基膠做密封處理，以此做成的中空玻璃，使用壽命不如前者。當中空玻璃第二道密封膠采用硅酮膠時，不應采用四角插接式間隔鋁框的中空玻璃。
The first sealing butyl rubber of grooved aluminum double sealing insulating glass has very low water vapor transmittance; The second sealant mainly includes polysulfide glue and silicone glue. The interval aluminum frame should be of continuous long pipe angle type, and the joint should be sealed with butyl rubber; If the four corner plug-in type is adopted for the spacing aluminum frame, each joint shall also be sealed with butyl rubber. The service life of the insulating glass made of this is not as long as the former. When silicone sealant is used for the second sealant of insulating glass, insulating glass with four corner plug-in spacer aluminum frame shall not be used.

單道密封中空玻璃是難以滿足中空玻璃的密封性能的。為彌補這些膠的密封性能的不足，通常采用水汽透過率極低，但結構性差的聚異丁烯膠作為中空玻璃的第一道密封膠，以阻止潮氣向中空玻璃內滲透，這就是傳統的大家熟悉的雙道密封中空玻璃的生產工藝。由于雙道密封中空玻璃所采用的二種密封膠各自性能上的缺陷，只能采用兩者結合的方式（即雙道密封式）才能滿足中空玻璃的密封性和結構性指標。現在有一些新型中空玻璃密封膠：結構型熱熔丁基密封膠。
Single sealed insulating glass is difficult to meet the sealing performance of insulating glass. In order to make up for the lack of sealing performance of these adhesives, polyisobutylene adhesive with extremely low water vapor transmittance but poor structure is usually used as the first sealant of insulating glass to prevent moisture from penetrating into insulating glass. This is the traditional familiar production process of double sealed insulating glass. Due to the defects in the performance of the two sealants used in double channel sealed insulating glass, only the combination of the two (i.e. double channel sealed) can meet the sealing and structural indexes of insulating glass. Now there are some new types of insulating glass sealant: structural hot-melt butyl sealant.
中空玻璃打膠機主要用于中空玻璃的打膠環節，也就是我們平時所說的密封環節。中空玻璃打膠機主要針對中空玻璃的第一道密封。使用專用設備將熱熔丁基膠加熱熔化后，用中空玻璃打膠機將丁基膠涂至中空玻璃的涂膠部位。這個打膠速度要掌握好，因為丁基膠幾分鐘就冷卻定型，打膠速度不宜過快過慢。過快的情況下很容易導致打膠不飽滿，日后影響中空玻璃的密封問題。過慢的情況下影響中空玻璃打膠機的工作效率問題。
The insulating glass gluing machine is mainly used for gluing the insulating glass, which is what we usually call the sealing link. The insulating glass gluing machine is mainly used for the first sealing of insulating glass. After heating and melting the hot-melt butyl adhesive with special equipment, apply the butyl adhesive to the gluing part of the insulating glass with the insulating glass gluing machine. The gluing speed should be well controlled, because the butyl glue will be cooled and shaped in a few minutes, and the gluing speed should not be too fast or too slow. Too fast can easily lead to insufficient gluing, which will affect the sealing of insulating glass in the future. The working efficiency of insulating glass gluing machine is affected when it is too slow.