胶缸中丁基胶没有排净即更换加入新的丁基胶。双组份打胶机如果在胶缸中存在丁基胶的情况下退出活塞，具有优良粘接性的丁基胶。

　　If the butyl rubber is not discharged, the new butyl rubber is replaced. If there is butyl rubber in the rubber cylinder, the piston will have good adhesive properties.

　　在胶缸底部和活塞上会形成山峰状，而在推人新的丁基胶后，胶缸和活塞粘接的山峰状丁基胶与新的丁基胶之间会存在大量气泡，区别只不过是活塞处气泡比胶缸底部气泡少一些。因此在涂胶过程中表现为刚刚换胶后气泡较大，毛刺较多，而在将近结束时，气泡较少的现象。

　　At the bottom of the cylinder and the piston, the peak is formed, and after the new butyl rubber is pushed, there will be a large number of bubbles between the gums and the new butyl rubber. The difference is only that the bubbles at the piston are less than the bubbles at the bottom of the cylinder. Therefore, during the process of gelatinization, the bubbles are bigger and the burrs are more after just changing the glue, and the bubbles are less at the end.

　　成品丁基胶内部存在气泡。因丁基胶为半固体粘稠状不干胶，在生产过程中如果混入气泡不加以处理或处理不彻底而把气泡存留在胶体中，在涂布过程中气泡可随胶体从涂胶头排出从而影响涂布质量。

　　There are bubbles inside the finished butyl rubber. Because butyl rubber is a semi solid sticky adhesive, the bubble can be retained in the colloid in the process of production. In the process of coating, the bubble can be discharged with the colloid from the gel head and influence the coating quality.

　　胶缸和胶头温度过高。由于丁基胶内部存在大分子有机物质，如果温度过高，有机物质会发生裂解，产生小分子物质，其中一些在高温下以气态形式存在，如果此时丁基胶涂布操作，排出胶头后，即高温高压状态下的气体突然降压，其体积会迅速膨胀，产生大量微气泡，使胶条表现为毛刺现象。

　　The temperature of the rubber cylinder and the rubber head is too high. Due to the existence of large molecular organic matter in the butyl rubber, if the temperature is too high, the organic matter will break up and produce small molecules. Some of them exist in the form of gaseous state at high temperature. If the adhesive is coated at this time, the gas will suddenly depressurization at high temperature and high pressure, and the volume will expand rapidly. The bulge produces a large number of micro bubbles, which makes the rubber strip show burr phenomenon.

　　丁基胶体直径与胶缸直径相差太大。如果丁基胶直径大大小于胶缸直径，丁基胶与胶缸内壁存在较大空间并充斥着大量空气，丁基胶在活塞强大的机械力挤压下，胶体外壁不规则向外膨胀

　　There is too much difference between the diameter of the butyl colloid and the diameter of the cylinder. If the diameter of the butyl rubber is much smaller than the diameter of the cylinder, the inner wall of the butyl rubber and the inner wall of the cylinder is filled with a large amount of air. Under the powerful mechanical force extrusion of the butyl rubber, the outer wall of the colloid outer wall expands outwards.

　　把部分空气挤压封闭在胶体与缸壁之间'虽然在挤压过程中会有部分空气从活塞与缸壁之间的缝隙中排出，但被封闭的空气由于丁基胶的阻碍，不能排出，导致在丁基胶涂布过程中间隔一定时间就会有气泡产生。

　　Part of the air is squeezed between the colloid and the cylinder wall, although part of the air is discharged from the gap between the piston and the cylinder wall during the extrusion process, but the closed air can not be expelled because of the butyl rubber.

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　　Our company has won the trust of new and old customers with reliable quality, perfect service and reasonable price. In the century of challenges and opportunities, we will strive for the best quality and the best service. I hope we will have the honor of serving you!