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纸箱厂应该如何确保瓦楞纸箱纸板粘合的强度
编辑:河南金马包装材料有限公司 时间:2014-12-13
纸箱厂应该如何确保瓦楞纸箱纸板粘合的强度
Carton factory should how to ensure that the board bonding strength of corrugated box
资料整理;郑州金马包装厂 发布时间: 2012年12月12号 阅读次数:36
Data compilation; Zhengzhou Jinma Packing Factory published: December 12, 2012 reading number: 36
纸箱厂瓦楞纸板粘合强度的高低主要取决于粘合剂的质量和瓦楞纸板生产线的施胶质量。
The quality of adhesive strength of corrugated cardboard carton factory level mainly depends on the adhesive and corrugated cardboard production line sizing quality.
纸箱厂粘合剂的质量 :纸箱厂粘合剂的质量主要取决于粘合剂制作工艺的优劣和使用原料的质量。纸箱厂粘合剂使用的主要原料是淀粉,纸箱厂一般采用工业一级品以上的玉米淀粉。若使用等级较低的淀粉,由于其加工精细度差,蛋白质、脂肪等杂质较多,将消耗更多的烧碱,使粘合剂不稳定,纸箱厂粘合的瓦楞纸板易吸潮,并且粘合剂易以较大的淀粉颗粒和杂质为核心产生凝胶,使流动性变差。
Quality: quality of adhesive quality of carton factory carton factory adhesive mainly depends on the adhesive production process and the advantages and disadvantages of the use of raw materials. The main raw material is the use of starch adhesive carton plant, carton plant generally use corn starch more than a grade product industry. If the use of lower grade starch, because of its fine processing degree difference, more protein, fat and other impurities, will consume more caustic soda, the adhesive is not stable, carton factory adhesion of corrugated board is easy to absorb moisture, and adhesive easily to larger starch particles and impurities as the core to produce gel, the fluidity.
纸箱厂固含量、初黏力、黏度、糊化温度等是衡量粘合剂质量的重要指标:
Carton factory solid content, initial adhesion, viscosity, gelatinization temperature is an important index to measure the quality of the adhesive:
1.固含量 : 纸箱厂粘合剂的固含量应根据设备精度、运行速度及原纸实际情况确定,一旦高速宽幅瓦楞纸板生产线的车速达到200米/分钟以上,纸箱厂就要求粘合剂的固含量一定要高,水与淀粉的比例通常在2.5:1—3:1之间。粘合剂固含量高,水分就相对减少,较少的上胶量即可保证瓦楞纸箱纸板的粘合;并且在瓦楞纸箱纸板加工过程中水分变化较小,可以减轻瓦楞纸板翘曲。如果纸箱厂设备精度低、车速慢、原纸易透,粘合剂的固含量就要低一点,否则会造成瓦楞纸板脱胶、糊线晶化及爆线等质量问题。
1 solid content: the content of solid carton factory adhesive should be determined according to the accuracy of the equipment, the operation speed and base the actual situation, once the high-speed wide corrugated cardboard production line speed of 200 m / minute above, solid content of carton factory requires the adhesive must be high, water and the proportion of starch is usually in the 2.5:1 - 3:1. Adhesive with high solid content, water is relatively reduced, the quantity of cement can be less assurance adhesive corrugated carton board; and moisture less in the corrugated cardboard processing process, can reduce the corrugated cardboard warping. If the carton factory equipment, low precision, slow speed, paper easy penetration, the solid content of binder to a low point, otherwise it will cause the corrugated cardboard degumming, paste line crystallization and burst line quality problems.
2.初黏力 :初黏力是保证瓦楞纸板粘合以及提高车速的关键。在纸箱厂瓦楞纸板生产中,加大原纸预热面积,或者在制作粘合剂时添加交联剂和分别在主体与载体罐中增加硼砂、提高粘合剂固含量,都可以使粘合剂涂布后在较短的时间内开始产生粘合力,并且其黏力可以破坏纸面纤维。
2 initial adhesion: initial adhesion is to ensure and improve the speed of the corrugated bonded key. Carton plant in the production of corrugated board in the base paper, increase the preheating area, or in the production of adhesives during crosslinking agent and respectively in the subject and carrier tank increased borax, improve adhesive solid content, can make the adhesive coating in a relatively short period of time began to produce adhesion, and the adhesion can break the paper fiber.
3.黏度 : 粘合剂黏度越低,流动性越好。粘合剂流动性决定了粘合剂的渗透性、上胶的均匀度和胶量大小,直接影响到车速、纸板粘合、纸板平整度及强度。另外,不是粘合剂中淀粉所占比例越高,流动性越差;高固含量的粘合剂通过调整配制工艺,也可以保持很低的黏度。一般情况下,纸箱厂粘合剂在循环使用中,其黏度每通过循环泵一次,就会有所降低。此时,应兑入新制作的粘合剂混合使用。
3: the lower the viscosity of binder viscosity, liquidity, the better. Adhesive liquidity determines the uniformity and the amount of glue size adhesive permeability, glue, directly affect the speed, cardboard, paperboard smoothness and strength. In addition, starch adhesive is not the higher proportion, flow worse; adhesive with high solid content by adjusting the preparation process, also can be kept very low viscosity. In general, carton factory adhesive in the recycling, the viscosity of each circulation pump one time to will be reduced. At this time, should be blended binder made use of new.
4.糊化温度 : 糊化温度是指把淀粉粘合剂变成糊浆时所需的初始温度,粘合剂的糊化温度是保持高速生产的关键因素之解决粘合剂的糊化温度问题,除了通过调整烧碱用量及加热的方法外,适当加入一些添加剂也可起到同样的效果。纸箱厂糊化温度不能太低,否则会造成粘合剂在循环过程中糊化而影响粘合剂的流动性。应根据季节变化来调整粘合剂的糊化温度,冬季可将糊化温度调低至55—60℃,夏季则可将糊化温度调高至61℃—66。
4: the gelatinization temperature of gelatinization temperature refers to the initial temperature required to become the starch adhesive paste, gelatinization temperature of adhesive is pasting temperature problem solving adhesive remain key factors of high speed production, besides the method by adjusting the caustic soda and heating, appropriate to add some additives can also play the same effect. Carton factory gelatinization temperature is too low, otherwise it will cause flow adhesive in the circulation process and the influence of adhesive pasting. Should the gelatinization temperature to adjust the adhesive according to seasonal changes, winter can be reduced to 55 - the gelatinization temperature of 60 DEG C, summer can be the gelatinization temperature raised to 61 C and 66.