Paper bag machines often have some problems, we need to understand the reasons for these problems. If there is an error in the length of the cut bag, we need to lock the rubber roller, and then check whether the film is clamped in the rubber roller. Secondly, we need to observe whether the feeding speed is too high. If it is too high, we need to reduce the feeding speed in time.
There are errors in the length of the cut bag, long and short ① First, "lock the shaft" on the feeding rubber roller, and pull the film hard to see if it is not clamped in the feeding rubber roller. If it is not clamped, properly adjust the pressure of the feeding roller until the film It can't be pulled. ② Whether the "feeding speed" is too high, appropriately reduce the "feeding speed". ③ Whether the clamping device of the back bread red cloth is clamped too tightly, adjust it appropriately. If it cannot be clamped too tightly, it is better to pull the film gently. ④ Try to loosen or tighten the aluminum gantry tube.
2. The length of the cut out bag is the same, but it is not satisfied with the set value
① Press "2" to enter the password in the computer standby state, enter the actual length for correction
3. The bag is not sealed tightly or one side is not strong
① Whether the temperature is set properly: LDPE material is above 280°, BOPP material is above 320°
② Adjust the position of the heat sealing knife
③ Check whether the conveyor belt is pulling the material too early, and the upper conveyor belt should be closed just after the heat sealing knife leaves the silicone roller 20mm-25mm high.
④Check the transmission bearing of the upper conveyor belt
4. The bag sometimes cuts continuously
① The hot knife is not smooth. Stuttering is the main reason for the continuous bag cutting. Because the hot knife will expand with high temperature, the hot knife can only lock one screw but not both ends, otherwise it will cause the hot knife to freeze or run unsmoothly
② Pay attention when adjusting the heat-sealing knife. When locking the heat-sealing knife, you must move closer to the side with the locking screw to ensure that there is room for extension on the other end of the heat-sealing knife, otherwise it will cause the heat-sealing knife to jam or fail to operate. Smooth, causing the bag to cut constantly
③ The upper conveyor belt pulls the material too lightly, adjust it down appropriately
5. The bag is not tidy when exiting the conveyor belt, and the material is received in disorder
① Check whether one side is high or low when the upper and lower conveyor belts are closed. The mismatch between the upper and lower conveyor belts is one of the main reasons for the disordered and untidy collection.
② Adjust the up and down distance of the apron, and whether the apron is evenly spaced
3. Equipment maintenance
1. The equipment should always clean up the debris in the electric box, and the four corners of the equipment should be blown clean with air guns to keep the whole machine clean
2. Hot cutter slider and hot cutter bar. Lubricating oil should be added regularly to the water jet slider, punching machine, and transmission chain, generally 1-2 times every 10 hours
3. The equipment must be grounded strictly to prevent leakage and injury. The wiring of the heating blade of the hot cutter must be checked for looseness. If there is looseness, it must be tightened in time to prevent leakage or even fire.

The kraft paper made by our common kraft paper bag machine is generally yellowish brown, and it is often used to make bags and wrapping paper. There are many types of kraft paper on the market. According to the nature and use of kraft paper, we can often classify it. According to different classifications, it will be easier for us to find the kraft paper we need.
1. Kraft paper usually keeps its yellowish-brown color, suitable for bags and wrapping paper. Depending on its properties and uses, kraft paper has various uses. Kraft paper is a collective name for a kind of paper, and there is no certain specification, and it is generally classified according to its nature and use.
2. According to the different colors, it can be divided into: primary color kraft paper, red pine kraft paper, white kraft paper, flat kraft paper, single-gloss kraft paper, and two-color kraft paper.
3. According to different purposes, it can be divided into: packaging kraft paper, waterproof kraft paper, moisture-proof kraft paper, anti-rust kraft paper, pattern-making kraft paper, process kraft paper, insulation kraft paper, and kraft stickers.
4. According to different materials, it can be divided into: recycled kraft paper, kraft core paper, kraft base paper, rough kraft paper, kraft wax paper, wood pulp kraft paper, composite kraft paper. Kraft paper color reasons
Different sources of kraft paper raw materials, different production batches, different production seasons, different production machines, etc. Many reasons will affect the color of the kraft paper roll base paper. This difference in color is difficult to avoid, and it is also Uncontrollable, generally the same batch of kraft paper can guarantee 98% consistent color. Kraft paper applications and uses
1. Kraft paper is used in various industries such as chemical industry and machinery, especially widely used in food packaging industry. Kraft paper is widely used in various packaging supplies, such as paper bags, handbag kraft paper, color boxes, paper cups, gift box kraft paper, printing kraft paper, notebook kraft paper, workbook kraft paper, and special kraft paper for envelopes.
2. Food packaging should follow the principle of convenience and convenience. The tensile strength of kraft paper makes it very suitable for packaging needs. In order to prevent the bag from being pulled off when consumers carry out food, the packaging material is required to have good tensile strength. Beverage packaging requires that the material has a certain resistance to moisture and deformation to prevent deformation and damage due to water absorption.
3. As shown in the picture, we have packed 2 books in a handbag, 2 books are 2kg, the bearing capacity is still OK, the bottom is not broken, and the handle is not broken. The glue we use to make paper bags
It consists of two parts: base material and adhesive. The adhesive material is mainly hot melt adhesive, pressure sensitive adhesive, acrylic adhesive, synthetic rubber, natural rubber, etc. The base materials include polypropylene film, polyvinyl chloride film, fiber cloth, fiber plastic, sponge, foam, tissue paper and other materials. But the glue used in our craft is hot melt glue, which belongs to glue used for food grade paper bags.

The computer controller of the paper bag machine often has some failures. In order to solve these failures, we need to know the type of failure and the solution. If you can't start by pressing the start button, you need to turn off the power and restart, and then check whether the inverter alarms. Also need to check whether the intermediate relay is working properly, if not, replace it.
③ Check whether the voltages of U, V, W, and 380V are normal. If they are normal, replace the motor.
2. The computer screen does not display or the keys fail:
① First check whether the switching power supply has DV 24V voltage output. Or the proximity switch is damaged and disconnected, causing the power indicator to not light, and there is no 24V output.
② Replace the proximity switch or switching power supply.
③ Replace the computer.
3. The machine can be started, but the feeding rubber roller does not rotate or feed:
① Check whether the servo drive has alarms. If there is no alarm, replace the servo drive.
② Check whether the proximity switch is burnt out. If it burns out, replace the proximity switch.
③ Replace the servo motor.
4. The machine starts to work, but the feeding rubber roller is feeding slowly or feeding for a long time:
① Mainly check whether the current value of the "pulse equivalent" parameter in the computer "modification" is "0.107".
5. The rear discharge DC motor or conveyor belt motor does not rotate or work:
① Check whether the over-current indicator on the upper left corner of the DC motor speed control board is on. If the over-current indicator is on, turn off the main power supply for 5 seconds and then power on. If the over-current indicator is still on, please replace the DC motor speed control board.
② Check whether the speed regulating potentiometer is out of order, if it fails, replace the potentiometer.
③ Check whether the carbon brushes of the DC motor are excessively worn. If they are excessively worn, replace the carbon brushes.
6. The punching machine does not punch or penetrate the material:
① First check the parameter settings in the computer: whether the current value of "punching delay" is "50-80" milliseconds, whether the current value of "punching delay" is "30" milliseconds, and whether the current value of "function 17 port" is "1 punching" "
② Check whether the punching machine is worn
③ Check whether the air pressure is above 0.6MPA
④ Check whether the perforated intermediate relay works normally (replace)
⑤ Check whether the solenoid valve is damaged (replace)

In order to be able to use the paper bag machine for a long time, we must maintain and maintain it on a regular basis, which will help extend its service life. When the paper bag machine is maintained, we must often clean it to ensure that it can be kept clean and tidy, and when it has problems, we must solve the problem in time.
The types of smooth grease can be roughly classified according to its hardness, pressure feedability, dripping point, water resistance and stability. When using the die-cutting machine, it is necessary to control the position of the operation panel, so that the pressure adjustment and tilt adjustment of the die-cutting board are safer and easier to operate, and it can be adjusted at any time when it is turned on.
The application range of smooth grease is very wide, and the working conditions are also very different. Different mechanical equipment has very different requirements for the function of smooth grease. The function of slick grease is the summary performance of the composition of slick grease and its preparation skills. The evaluation of the function of smooth grease is not only of decisive significance in the production and research work, but also in the selection and inspection of the smooth grease by the application department. According to the specific conditions of the grease parts of cars and construction machinery, the basic requirements for smooth grease are: proper consistency, outstanding high and low temperature functions, outstanding extreme pressure, anti-wear properties, outstanding water resistance, corrosion resistance, rust prevention and stability Sex etc.
The die-cutting pressure adjustment of the usual die-cutting machine of the paper bag machine is to use the upper adjustment method and the lower adjustment method, which is to adjust the upper part of the paper or the lower part of the paper. Because from the point of view of skills, it is difficult to keep the paper feeding at the same level if the two-seater die-cutting is used for adjustment. For the same adjustment of the inclination of the die-cutting board, it is also possible to select the upper adjustment method, which has the same reason. Manufacturers are choosing machines, especially those with double die cutting bases, to consider this aspect.
Paper bag machine hardness, or penetration, is a measurable characteristic that must be considered for the selection of appropriate smooth grease. The hardness of lubricating grease is determined by the number. No. 0 is the softest, and then increases to No. 6 with No. 1 and No. 2. The hardness of No. 6 is the same as that of Panjian block. The mud in the garden is soft when shoveled in easily, harder to shovel in, and the hardness of the smooth grease is the same. It is graded according to the penetration depth of the smooth grease dropped from a certain height by the cone gauge. It is necessary for printing machinery to participate in smooth grease of appropriate hardness according to the printer manufacturer's request, otherwise it may cause lack of smoothness or increase resistance to the machine.
Traditionally, the planning and production of smooth grease only focused on the unity problems faced by perfunctory machinery and equipment. Such as high temperature, high speed, high pressure or anti-wear. Later, due to the request of machinery manufacturers and increased competition in shopping malls, the production of smooth grease gradually tended to move in a multi-functional direction. However, ordinary petroleum products always have their limits in use, and they have not been able to effectively meet the rapid development requests of modern production equipment. Although it is not easy to choose the right smoothing agent, there are also some professional smoothing agent suppliers in the shopping malls that can provide professional data and long-term after-sales service to reduce customers' mistakes in use and prevent waste of precious time and money. We might as well listen to the opinions of industry insiders, I believe it will help protect the outstanding features of the printer.

Paper bags are not only very convenient to carry, but also can be used to store items. It has a wide range of applications, which promotes the development of paper bag machines, which can make paper bags well. When the paper bag machine is used to produce paper bags, the raw materials used are generally virgin pulp or recycled paper, and manufacturers will choose raw materials according to specific needs.
Today, the printing expert informs you that you should do this when printing tote bags.
1. Commonly used paper for handbag printing
1. Most of the papers used for handbag printing are 157g/㎡, 200g/㎡ coated paper, in addition, 120g/㎡, 140g/㎡ white or yellow kraft paper is also compared.
If the handbag needs to be loaded with heavier goods, there are also 300g/㎡ coated paper or 300g/㎡ or more cardboard. If you want to further strengthen the strength of the handbag, you can cover it according to your needs, contact the planning of the handbag, and cover it with a layer of bright or matte film to show the exquisiteness of the handbag.
2. White kraft paper has strong toughness and environmental protection. Recently, it has been increasingly used in the printing and manufacturing of handbags.
3. The color expressiveness of the coated paper is relatively strong, so the planning style of the handbag can also be unique. In terms of printing technology, all the technologies in modern printing can be expressed on a small handbag.
2. Paper bag planning
When planning a handbag, the primary focus may be on how to make the handbag planning special and exquisitely printed, which can leave a deep image. Nowadays, the features such as being able to be used repeatedly and having environmental protection features are among the main points considered by planners.
Corporate handbag planning usually requires conciseness and generosity. The front of the handbag planning and printing process is usually based on the company’s logo and company name. Perhaps with the company’s operating philosophy, the planning should not be too messy, which can deepen consumers’ perception of the company or products. To obtain a good publicity effect, the planning and printing of handbags has a great effect on expanding sales, establishing famous brands, and influencing purchasers to enhance competitiveness.
Three, paper bag scale
Many commodity handbags are only arbitrarily manufactured based on the scale of their commodities. Usually many commodities are produced and processed without considering the scale of the handbag when it is packaged, so it cannot be prevented from being printed in the handbag. It will be spoiled.
When planning bags for customers, printing factories should be as close to their standards as possible, and they should also try to prevent their unnecessary waste.
For example: the scale of the front facing: 400*300*80 (mm), this scale is not spoiled, a full-open paper can be made into two bags, and the printing is also cost-effective, and it can be printed with a facing machine. .If the customer wants to make the scale of 400*320*100 (mm), this is a large scale, and it is not spoiled, but if it is made to be 400*300*150 (mm), then Nothing, the spoilage is relatively large. One is the paper, and the other is the printing. The post-processing costs are also higher, because the handbag of this size can only be made into a double-sticky mouth.
Fourth, paper bag forming
By laminating the film after printing, and then punching and threading (usually nylon rope or cotton rope, some thin paper bags often use paper rope), the handbag can be formed (such as the large printing scale of the handbag, the rope hole Reinforce the rivets to resist tension).
It can be seen that the production technology of handbags is not messy, and the process of just stringing usually requires manpower to complete. Therefore, compared with other printed products, the technical process is slightly messy, which also increases the cost of handbags.