復(fù)合中的氣泡現(xiàn)象

Bubble phenomenon in recombination

1．薄膜潤濕不良，應(yīng)提高膠的濃度和涂布量，MST、KPT表面不易濕潤，易產(chǎn)生氣泡，特別在冬天。油墨上的氣泡，用提高膠的用量的方法去除。

1. If the film is poorly wetted, the adhesive concentration and coating amount should be increased. The surface of MST and KPT is not easy to be wetted and is easy to produce bubbles, especially in winter. The bubbles on the ink can be removed by increasing the amount of glue.

2．油墨表面凹凸和起泡，應(yīng)把復(fù)合膜的復(fù)合溫度和復(fù)合壓力提高。

2. If the ink surface is concave and convex and blistering, the composite temperature and pressure of the composite film should be increased.

3．油墨表面上的膠涂布量少，應(yīng)增加復(fù)合輥的壓貼時間及使用光滑輥筒、薄膜預(yù)熱充分、降低復(fù)合速度、選擇濕潤性好的膠以及正確選用油墨。

3. The amount of glue coating on the ink surface is small, so it is necessary to increase the pressing time of the composite roller and use the smooth roller, fully preheat the film, reduce the composite speed, select the glue with good wettability and correctly select the ink.

4．薄膜中的添加劑（潤滑劑、抗靜電劑）被膠滲透，應(yīng)選用分子量高、固化迅速的膠，提高膠濃度，提高烘箱溫度充分使膠干燥，不使用超過3個月存放期的薄膜，因為電暈處理已喪失。

4. When the additives (lubricant, antistatic agent) in the film are penetrated by the glue, the glue with high molecular weight and rapid curing should be selected, the glue concentration should be increased, the oven temperature should be raised to fully dry the glue, and the film with a storage period of more than 3 months should not be used, because the corona treatment has been lost.

5．冬天里氣溫低，粘結(jié)劑對薄膜和油墨轉(zhuǎn)移，潤濕粘附效果不好，故操作場所保持一定溫度。

5. In winter, the temperature is low, and the adhesive transfer to the film and ink, and the wetting and adhesion effect is not good, so the operating site should maintain a certain temperature.

6．干燥溫度太高，發(fā)生膠的起泡或表皮結(jié)皮，內(nèi)里不干，應(yīng)調(diào)整膠干燥溫度。

6. If the drying temperature is too high, blistering or skin scaling of the glue occurs, and the inside is not dry, the drying temperature of the glue should be adjusted.

7．濟(jì)南復(fù)合袋中的復(fù)合輥薄膜間夾帶入空氣，應(yīng)提高復(fù)合輥溫度，減小復(fù)合角（薄膜厚、硬時易產(chǎn)生氣泡）。

7. Air is entrained between the film of the composite roll in Jinan composite bag. The temperature of the composite roll should be increased to reduce the composite angle (bubbles are easy to occur when the film is thick and hard).

8．由于薄膜阻隔性高，膠固化時產(chǎn)生的CO2氣體，殘留在復(fù)合膜中，未印刷處也有氣泡，應(yīng)提高固化劑量，使膠在干燥中固化。

8. Due to the high barrier property of the film, the CO2 gas generated during the curing of the adhesive remains in the composite film and there are bubbles at the unprinted part. The curing dose should be increased to make the adhesive solidify in the dry.

9．膠中的脂酸乙酯是油墨粘結(jié)料的良好溶劑，膠溶滲了油墨，只在油墨上有氣泡，應(yīng)避免水分滲入膠中及提高膠干燥溫度，減少對油墨的溶滲。

9. The ethyl fatty acid in the glue is a good solvent for the ink binder. The glue dissolves the ink and only bubbles on the ink. It is necessary to avoid water infiltration into the glue and increase the drying temperature of the glue to reduce the penetration of the ink.

復(fù)合袋生產(chǎn)期間出現(xiàn)復(fù)合氣泡的原因以及應(yīng)對如上，希望給您好的幫助，不管是生產(chǎn)還是使用都應(yīng)做好了解事項，關(guān)注我們http://www.673338.com.cn為您講解更多事項！

The causes of compound bubbles during the production of composite bags and the countermeasures are as above. I hope to give you good help. Whether it is production or use, we should do a good job in understanding matters and pay attention to us http://www.673338.com.cn Tell you more!