The so-called paper mounting process is the problem of lamination accuracy and lamination quality. Now let's briefly analyze the above two major problems.
Laminating accuracy is the maximum range of the relative distance between the edge of the facing paper and the backing paper on the specified rule side after the bottom paper (corrugated paper or cardboard) and the facing paper (color paper) are bonded together. value. The value is generally ± 1. The factors that affect this value can be divided into two parts. First, the mechanical part, the second human factor. The fitting principle of all manufacturers of mechanical parts can basically meet this requirement. It's just that the proficiency and skill of the operators are required (that is, the operability is strong or weak) because the semi-automatic paper laminating machine is still the most on the market. Therefore, human factors play a decisive role. Focus on this. Due to different models, this requirement is also slightly different. For Shengtian TMB1300A, its front gauge is a bevel type gauge (because the lowest origin of the gauge is the facial paper position), this can make the bottom paper not Advance, so the requirement for the operator is to accurately feed to the origin position and keep it until the point wheel feed paper pressurization, the bottom paper is also sent out for the point wheel, and sent to the front of the point wheel pressing part through the round belt conveying part. To increase the friction of warping paper and round belt. An adjustable-speed fan is also added under the round belt, the purpose is to improve the time for unwinding of the bottom paper. Because of the different working speed, the wind power requirements of the fans are also different. Excessive assembly will cause the bottom paper to be sent to the front file away from the back of the file gauge. Because of its elasticity, the bottom paper will move a distance away from the front file. If it is too small, it will be too large after it is released, and it will cause the paper to lead the backing paper by a large distance. Second, the backing paper cannot overcome the warpage of the backing paper combined with the backing paper and the working speed of the machine. Adjust the wind. Make the backing paper just stably sent to the front gauge so as to ensure the accuracy is within its required range. For the advanced function of the TMB1300B machine, it should be the largest no matter the warpage of the backing paper is large or small. Because of its front-end gauge, only the bottom paper of the face is pressed by the pressing gap of the point wheel to make the bottom paper squeezed on the face paper, and then conveyed to the pressing part through the point wheel pressing.
The so-called bonding quality refers to the impact resistance and the obvious degree of bonding of the finished cardboard are the most prominent. Both of these indicators are directly related to the adhesive, and are now based on the use of peculiar rubber powder. Explain this in detail;
The degree of adhesion, that is, the bonding strength between the bottom paper and the top paper. A good bonding product is that the bottom paper and the top paper are immersed in the mixture. If the immersion degree is too deep, it will cause a flute, and if it is too shallow, it will cause poor bonding. (That is, if the frying port is too shallow, the glue will be opened. Immersion depth, now a set of simple verification methods are introduced. First, glue is evenly applied on the corrugated corrugated front, that is, more than one third of the corrugated height should be ensured to be stroked on the corrugated cardboard coated surface by hand, there is obvious Touch the glue. second. The corrugated paper is bonded to the facial paper. After the pressure is applied, the semi-finished product is taken out before the conveying and pressing. The facial paper is pulled out and the glue trace on the facial paper is observed. When the pressure of each conveying roller is suitable, the glue trace should be A continuous glue column line, when the larger one, the glue trace is a glue trace with a certain width, when it is too large, there will be two glue traces with a smaller width, if it is too small, the glue trace will now be a discontinuous Glue line.
The obviousness of corrugated paper is what we call the degree of perforation, and it is seriously wavy on the surface of the fit. Under the premise of ensuring the complete shape of the glue line mentioned above, the paper fiber arrangement direction of the paper is decisive for this standard. The function, that is, what we call horizontal yarn and vertical yarn, should pay attention to the direction of the facial paper and the corrugated paper.
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