丁基膠涂布機的常見(jiàn)原因
Common causes of butyl rubber coater
現象1:涂在鋁隔條上的丁基膠條有毛刺，不整齊。
Phenomenon 1: The butyl adhesive tape coated on the aluminum spacer strip has burrs and is irregular.
原因:兩個(gè)噴嘴出口處可能有雜質(zhì)或噴嘴不光滑。
Cause: There may be impurities at the outlet of two nozzles or the nozzles are not smooth.
方案或建議:檢查兩個(gè)噴嘴出口處是否有雜質(zhì)或噴嘴是否光滑。
Solution or suggestion: Check whether there are impurities at the outlet of two nozzles or whether the nozzles are smooth.
現象2:層壓后，丁基膠帶和第二層密封膠之間出現間隙(白線(xiàn))。
Phenomenon 2: After lamination, there is a gap (white line) between butyl tape and the second layer of sealant.
原因:第二層密封膠涂抹不正確。
Cause: The second layer of sealant is applied incorrectly.
方案:在涂抹第二層密封膠時(shí)，應使用適當的力在一個(gè)方向上涂抹密封膠，以防止空氣包裹在密封膠中，降低中空玻璃的密封性能。
Solution: When applying the second layer of sealant, apply the sealant in one direction with appropriate force to prevent air from wrapping in the sealant and reduce the sealing performance of the insulating glass.
現象3:加熱后擠出不順暢，膠水容易斷裂(斷線(xiàn))。
Phenomenon 3: The extrusion is not smooth after heating, and the glue is easy to break (broken wire).
原因:丁基密封膠應用的關(guān)鍵是擠出。溫度控制在擠壓過(guò)程中非常重要。溫度控制是否恰當，直接影響密封膠在整個(gè)過(guò)程中的流變狀態(tài)，影響產(chǎn)品內在質(zhì)量的美觀(guān)。應該特別注意溫度。過(guò)高的溫度會(huì )導致密封膠融化過(guò)多，沒(méi)有強度甚根本無(wú)法形成(流動(dòng)現象)；溫度過(guò)低，膠水流動(dòng)性差，機器無(wú)法擠出膠水，影響施工進(jìn)度。這是擠壓不平滑的主要原因。另一個(gè)原因可能是丁基密封膠在制造過(guò)程中混入氣泡，導致擠出過(guò)程中膠水斷裂。
Cause: Extrusion is the key to the application of butyl sealant. Temperature control is very important in extrusion process. Whether the temperature control is appropriate will directly affect the rheological state of the sealant in the whole process and the aesthetic appearance of the product's internal quality. Special attention should be paid to temperature. Too high temperature will lead to excessive melting of sealant, no strength or even no formation (flow phenomenon); The temperature is too low, the fluidity of glue is poor, and the machine cannot extrude glue, which affects the construction progress. This is the main reason for unsmooth extrusion. Another reason may be that butyl sealant is mixed with bubbles during manufacturing, resulting in glue fracture during extrusion.

方案:溫度通常在制造商提供的擠出溫度下選擇。擠出機溫度一般設定為機筒110-140℃，機頭112-142℃。為了使主機產(chǎn)生一定的壓力并均勻地熔融擠出，要求機頭的溫度高于機筒的溫度，并且溫度具有一定的滯后性。在調節過(guò)程中，應注意逐漸加熱和冷卻。在開(kāi)始涂膠之前，應進(jìn)行適當的排氣，以減少內部氣泡和空隙，并防止擠出過(guò)程中產(chǎn)生的氣泡導致膠水斷裂。
Solution: The temperature is usually selected at the extrusion temperature provided by the manufacturer. The extruder temperature is generally set as 110-140 ℃ for the barrel and 112-142 ℃ for the head. In order to make the host produce a certain pressure and uniformly melt and extrude, the temperature of the die head is required to be higher than the temperature of the barrel, and the temperature has a certain hysteresis. During the adjustment, pay attention to gradually heating and cooling. Before gluing, proper air exhaust shall be carried out to reduce internal bubbles and voids, and prevent bubbles generated during extrusion from causing glue fracture.
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