In the current global economic crisis, many packaging companies have encountered unprecedented difficulties. How to tap the internal potential of an enterprise and control production costs directly affects the survival of the enterprise. The CEOs of the carton plant are also brainwashed in this regard, but they often overlook the effect of corrugating roller squalling parameters on production costs. Corrugated rollers' paper consumption and the size of the amount of paste directly affect the production cost of the company. For packaging companies, the cost of paper and glue accounts for 80% of the total cost, and the paper consumption rate and the amount of food and paste are It is determined by the corrugating roll parameters.
As early as a few years ago, many companies have recognized the importance of this issue, but there are still many manufacturers that have not paid enough attention to this issue, and they often passively accept the manufacturer's corrugating roller type or traditional tradition.楞型。 Although the same corrugated board can be produced, it brings completely different results to the product quality and the use cost of the carton plant, which is directly related to whether the plant is profitable or lossy.
In recent months, the author visited many packaging companies in North China and found that many manufacturers still use corrugated rollers with high paper consumption. For example, the A-Watt has a height of 4.8, a number of turns of 35 teeth/300mm, a paper consumption of more than 1.58, a B-watt of 2.8mm and a paper consumption of 1.43. No one used it. In general, the paper consumption of A and B is about 1.50, while that of B is about 1.38. Some manufacturers use AC, which is between 4.0 and 4.4, to replace traditional ones, which are also known as small A (paper consumption is 1.45). A, even with a lower consumption of C 楞 to replace (usually paper consumption is about 1.42), the purpose is to reduce paper costs.
When I asked the bosses of these northern manufacturers, why use such a high level? They replied: The thickness of some of our customers' five-layer cardboard is around 7.8. The author believes that for such problems, we must make a choice. If such customers account for less than 10% of total customers. The first is to guide them. If they can't give up, they can't give up 90% of the cost of paper because of the 10% of the amount, which leads to the loss of the company. The thickness of the five-layer cardboard is greater than 7.5, which is the previous standard. In the South, the consensus has been reached that the thickness of five-layer paperboard combined with A and B is not less than seven, and the thickness of five-layer paperboard combined with B and C is not less than 6.5. Nowadays, the customer's requirements for cardboard are good, the cardboard feels stiff, and the thickness requirements are not so sensitive. Reducing consumables is also advocated and encouraged by the state. The adjustment of new carton standards also embodies this principle. For example, the number of A turns from 34±2 to 34±3, and B楞 from the original 50±2 to 50±4. This is to implement this spirit and allow packaging companies to have more room to operate. The following is a detailed discussion of the ripple parameters of the corrugating roller, such as the number of turns, the height of the jaw, the arc at the end of the tooth tip, etc., which affect the amount of paper used.
Number of turns
The number of turns refers to the number of turns per 300 mm on the national standard. The denser the number of papers, the higher the paper consumption, and vice versa. Of course, the denser the number of turns, the flatter the cardboard, the stronger the resistance to pressure. The following table reflects the effect of the change in the number of turns on the amount of paper consumed in a given situation.
From Table 1, it can be seen that for each additional tooth number, the shrinkage rate is increased by 3% (that is, 3 meters of corrugated paper is used for every 100 meters of paperboard produced). If the difference is 2 teeth, it is 6%. That is to say, if other conditions do not change, if A楞 and B楞 reduce two teeth per 300mm, the paper consumption of five-layer carton corrugated paper will decrease by 12%. What kind of concept is this? If corrugated paper is weighed at 110 grams and the price is 2,000 yuan per ton, the company's daily production of 100,000 square meters will save 1,320 kilograms of corrugated paper per day, or 2,460 yuan per day. What about that month? How about a year? Counting it is amazing.
The adjustment of the number of turns should have a reasonable choice. The carton factory first needs to study what the customer has to do with the physical specifications of the cardboard. For example, what are the requirements for pressure resistance? For example, Mengniu has a higher demand for its carton suppliers in the pressure-resistance sector, and the number of carton boxes should be slightly closer. Otherwise, it can only be returned to the carton factory. However, if the customer only requires 150 kilograms of compressive strength, and the processed cardboard can reach 250 kilograms of compressive strength, this means that the additional 100 kilograms of compressive pressure is given to others in vain. The amount of paper used to achieve 150 kg of compression and 250 kg of compression differs greatly.
How to properly coordinate the relationship between the number of high-quality products, so that the quality of cardboard can be accepted by customers, and the cost of paper is more economical? This is a problem. The company where the author is working is developing such a software, that is, combined with the situation of the paper used in the carton factory, such as the weight, the level of the paper, the level of the paper, how high the number of defects, and how many turns, can withstand much pressure. If it can be successfully developed, it will certainly help packaging companies.