With the continuous improvement of the product packaging level requirements of the commodity market, cartons and cartons as the most widely used packaging products must not only have exquisite printing and decoration, but also have perfect body quality and compressive strength. The indentation undercut in the die-cut indentation process is an important guarantee for the quality of the box shape. In addition to the method of manually pasting the bottom mold, the bottom mold, fiber indentation bottom mold, and emboss Die and so on.
From a technical point of view, the indentation strip mold is highly recommended for its simple and convenient operation, complete specifications, and wide application range. It not only compensates for the low relative position of the hand-bonded bottom mold and the die-cutting plate, but also the low dimensional accuracy of the pit pit itself. In addition to the short service life, the overall cost of the carton is also reduced. Whether in the automatic die-cutting machine or the semi-automatic die-cutting machine, the indentation bar mold can perform perfectly.
The indentation strip mold does not require the special equipment of the bottom mold, nor the expensive price of the fiber bottom mold, nor the quality problem of the box-shaped angle bending. The depth of the indentation is relatively stable, suitable for different types of paper, and the price is low and the durability is low. Strong, suitable for different needs and use. Even workers who have never done indentation moulds can use it skillfully within a short time.
The use of indentation bar molds is simple and convenient. When in use, first measure the length of the indentation line on the knife template, cut the indentation strip mold according to the measured length, place the elastic opening card of the positioning suction strip on the indentation line, tear off the protective tape, and cut the mold Install the machine, and then start the Die Cutting Machine once, the indentation strip mold is positioned on the bottom touch plate. Tear off the positioning strip and position the indentation strip. The bottom touch plate is reinstalled, and the Die cutting machine can be used for die cutting operation.
There are many kinds of paper boxes and their shapes are different. The paper used for die-cutting color boxes is not the same. Different types of indentation strips are required for different box shapes and papers.
The specification of the indentation bar die is: the depth of the slot pit × the width of the slot pit, for example, the specification of the SLB type 0.44 × 1.3mm is: the standard type of indentation bar mold, the depth of the pit is 0.44mm, and the width of the pit is l. 3mm.
Different types of indentation moulds should be used for different types of papers in touch-cut indentations. There are different options for paperboard and corrugated paper.
Selection of Indentation Bars for Cardboard Die-cutting
First, the thickness of the paper is measured with a caliper, and the thickness of the indentation line used for the touch selection should be greater than or equal to the thickness of the paper. The depth of the pit used for the indentation molding should be equal to the thickness of the paper. In production practice, the width of the pit of the indentation strip mold can be selected according to the following formula: Indentation pit width = paper thickness × 1.5 + indentation line thickness.
Example: The thickness of the jam is 0.52mm, the thickness of the selected indentation line is 0.71mm, and the depth of the pit of the indentation pattern is 0.52mm (about 0.5mm). After calculation, the width of the pit of the indentation bar die = 0.52 × 1.5 + 0.71 = 1.49mm (about 1.5mm), then, the type of the indentation bar die should be 0.5 × 1.5mm.
Corrugated paperboard cutting die selection
First, the thickness of the corrugated board should be measured. The thickness of the indentation line should be greater than or equal to the thickness of the corrugated board. The depth of the groove should be equal to the thickness of the corrugated board. Here we need to explain is that if the thickness of the indentation line is less than the thickness of the paperboard, the indentation line is not prominent enough, and the paper box is easily deformed at the indentation line when the paper box is folded. In severe cases, the paperboard will burst and eventually affect the paper. The beauty of the box. In addition, if the pit concentration is less than the cardboard thickness, the same situation will occur; if the pit concentration is greater than the cardboard thickness, the situation will be better, but it is also easy to make the indentation line adjacent parts of the crack. Therefore, in actual production, we usually calculate the width of the indentation strip die pit according to the following formula: Indentation Strip Die Pit Width Corrugated board flattening thickness x 2 + indentation line thickness.
For example: The corrugated board has a flattened thickness of 0.85mm, the indentation line thickness is 1.0mm, and the depth of the pit of the indentation pattern is 0.85mm (approximately 0.8mm). It is calculated that the width of the pit of the indentation bar die = 0.85 × 2 + 1.0 = 2.7 mm (about 2.0 mm), so the model number of the indentation bar to be used is 0.8 mm × 2.0 mm.
to sum up
After making these two choices of paper and indentation strips, perhaps the reader is not very clear about this formula, and some questions arise as to why the cardboard cannot use the indentation pattern used in corrugated cardboard. Because there is a big difference between the two:
1. If the cardboard is selected by corrugated paper, the product will have an adverse effect, resulting in a box-shaped uneven angle, bending, compressive strength is not enough, indentation lines are not real enough, so that the product is not guaranteed.
2. Because the thickness of the two papers is different, the width of the creasing pattern of the corrugated paper is significantly wider than the width of the creasing pattern of the paper jam, and the creasing pattern of the paper jam is narrow, such as the corrugated paper box selecting the paper jam. If the indentation pattern is used, the indentation line of the product will have a popping phenomenon and the quality will be poor. In severe cases, the product will be scrapped and cause economic loss, and the customer will be outflowed.
For different cardboard, such as AB wave, EB wave, B wave, E wave, F wave, G wave, etc., you need to choose different indentation bar mold.
Die-cutting is a crucial process in the printing and packaging carton industry. It is an indispensable department. Therefore, if the die-cutting is not grasped correctly and semi-finished products are made, the cost will be greatly increased. The flexibility and convenient performance of the indentation bar model just adapt to the development trend of various types of cartons, cartons, and batches, and is thus favored by more and more carton and carton processing companies, which not only reduces the The manpower and man-hours consumed in the production process provide a reliable guarantee for the company's high quality and efficient service and quality.
Company Details
Suzhou Flying Man Assembly Automation Co., Ltd.
