Causes and solutions of seam separation of Cosmetic Box For Skin Care

Causes and solutions of seam separation of Cosmetic Box For Skin Care 

There are many reasons for the large opening of the Cosmetic Box after forming, and the decisive factors are mainly in two aspects: first, the reasons on the paper, including the use of the roll paper, the moisture content of the paper, and the fiber direction of the paper. 2. Technological reasons, including surface treatment, stencil making, depth of indentation line and imposition format. If these two problems can be solved well, then the problem of Cosmetic Box forming will be solved accordingly.

1. The sound of the paper is the main factor for the forming of the shadow box

As we all know, most of the roll paper is used now, and some are imported roll paper. Due to the problems of site and transportation, it is required to be cut in China, and the storage time of the paper after cutting is short. In addition, some manufacturers have difficulty in capital turnover. They are all sold and bought now, so the paper after cutting is large. Parts are not completely flat and still have a tendency to curl. If you directly buy the slitted flat paper, the situation is much better, at least it has a certain storage process after slitting. In addition, the water content in the paper must be evenly distributed, and must be balanced with the surrounding temperature and humidity, otherwise, it will deform over time. If the cut paper is stacked for too long and not used in time, the moisture content of the four sides is greater than or less than that of the middle, and the paper will bend. Therefore, in the process of using cardboard, use it on the same day that it is cut on the same day, and it should not be stacked for too long to avoid deformation of the paper. After the Cosmetic Box is formed, the opening is too large and the fiber direction of the paper is also a factor. The fiber arrangement of the paper has a small deformation in the horizontal grain direction and a large deformation in the vertical grain direction. Once the opening direction of the Cosmetic Box is parallel to the fiber direction of the paper, the phenomenon of bulging of the opening is very obvious. Since the paper absorbs water during the printing process, after UV varnish, polishing, lamination and other surface treatments, the paper is more or less deformed during the production process, and the tension between the surface and the bottom surface of the deformed paper is inconsistent. Deformation occurs, because the two sides of the Cosmetic Box have been glued and fixed when the Cosmetic Box is formed, and only when it is opened outwards, the phenomenon that the opening is too large after forming occurs.

Second, the process operation is also a factor that cannot be ignored because the opening of the color box forming is too large.

1. The surface treatment of drug packaging usually adopts UV glazing, film coating, polishing and other processes. Among them, glazing, film coating, polishing, etc. make the paper dehydrated at high temperature, and the water content is significantly reduced. Fibers are brittle and deform. Especially for cardboard with water-based machine lamination of more than 300g, the situation of paper stretching is more obvious, and the product after lamination has the phenomenon of inward bending, which generally needs to be corrected artificially. The temperature of the polished product should not be too high, generally controlled below 80 degree . After polishing, it is usually placed for about 24 hours. After the product is fully cooled, the next process can be produced, otherwise there will be a burst of wire.

2. The production technology of the die-cutting plate also affects the forming of the Cosmetic Box. The production of the hand-made version is relatively poor, and the specifications, cutting, and machetes are not well grasped. Generally, manufacturers basically eliminate the hand-made version and use the laser knife mold company. Made beer board. However, whether the size of the lock and the high and low lines are set according to the weight of the paper, whether the specifications of the cutting line are suitable for all paper thicknesses, and whether the depth of the die-cutting line is appropriate, etc., all affect the effect of the Cosmetic Box forming. The die-cutting line is a trace pressed on the surface of the paper by the pressure between the stencil and the machine. If the die-cutting line is too deep, the fibers of the paper will be deformed by the pressure; if the die-cutting line is too shallow, the paper fibers will not be completely pressed through. Due to the elasticity of the paper itself, when the two sides of the Cosmetic Box are formed and folded back, the incision on the side of the opening will expand outward, resulting in the phenomenon that the opening is too large.

3. In order to ensure a good indentation effect, in addition to the selection of suitable indentation lines and high-quality steel knives, attention should also be paid to the adjustment of machine pressure, the selection of rubber strips and standardized installation. Generally, printing manufacturers use the form of stickers to adjust the depth of the indentation line. We know that cardboard is generally loose in texture and not hard enough, so the result is that the indentation line is not full and durable. If the imported bottom mold material can be used, the indentation line will be fuller.

4. The main way to solve the paper fiber direction is to find a way from the imposition format. Nowadays, the fiber direction of paper on the market is basically fixed, and most of them are in the longitudinal direction. The printing of color boxes is printed on a folio, three-fold or four-fold paper in a certain amount. The general situation is On the premise of not affecting the quality of the product, the more pieces of paper the better, because this can reduce the waste of materials and thus reduce the cost, but blindly consider the cost of materials and ignore the fiber direction, the formed Cosmetic Box will reach less than customer requirements. In general, it is ideal that the fiber direction of the paper is perpendicular to the direction of the opening.

To sum up, if the opening of the Cosmetic Box is too large after it is formed, as long as we pay attention to this aspect during the production process, and try to avoid it from the aspects of paper and craftsmanship, the problem is also easy to solve.

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