Kraft paper bento box is a bento box made of brown paper. Kraft paper is a material made of cellulose pulp with high strength and wear resistance. Brown paper bento boxes usually have the following characteristics: Kraft Paper Bento Box,Restaurantware Bento Box,Eco Friendly Disposable Bento Box,Disposable Bento Box With Lid EVER GREEN(ZHEJIANG)NEW MATERIAL CO., LTD / KUNSHAN GREENPACK CO.,LTD , https://www.changjingpack.com
Since Ledus produces both gravure and flexo presses, the comparison between the two technologies is unbiased. Which printing method to choose should be based on quality, cost, and user acceptability (see Table 1).
Judging from the actual situation of the domestic use of flexographic presses, a large number of satellite flexographic presses used for printing stretched films abroad have been widely used in China; the width of paper is 400-650 mm, and it is equipped with a narrow processing unit. The web-type flexo press is popular in China. The main reason is that this type of machine has a low price and can print a variety of products such as beer labels, stickers and cigarette hard cases. Although there are still gaps in the printing effect and people's requirements, it has adapted to many small printing companies with “low investment. "Fast results and acceptable quality." The comparison and competition between gravure and flexo printing has been going on in Europe and America for more than 20 years. In the past 10-15 years, the application of new technologies (such as ceramic anilox rollers, enclosed squeegee blades, telescopic plate cylinders, electronic engraving technology and computer technology) in flexo printing has improved flexo printing. The printing quality also increases the cost of flexo printing. Today, the fact that both flexographic and gravure technologies coexist and begin to merge with one another tells us that they all have the rationality of existence and their respective market demands. Especially in recent years, with the deepening of the concept of environmental protection and the global financial crisis, packaging producers and end users have begun to pay attention to flexographic printing. For the sake of graphics and text, low hiding power, small order quantity, and non-recurring orders, especially those with shorter delivery time, the advantages of flexo printing are more obvious. As long as flexo printing continues to maintain its advantages of “short (short version of live), flat (low cost), and fast (delivery of delivery)â€, flexographic printing will still be healthy in China. In the face of the flexo printing competition, gravure equipment manufacturers have begun to flexibly apply flex prints on the premise of maintaining the advantages of small color difference in gravure printing, good effect of full-plate printing and gold printing, wide application of printing materials, and long-lived printing. Advantageous short live market enters. Le Duvens' latest ROTOPAK 3000-ES series shaftless drive gravure press is one example. In fact, as early as 1996, Duvins installed a 52-inch (about 1.32 meters) wide colorless color-axis-driven gravure printer in the United States. The design basis for a shaftless drive gravure press is: Each individual print or process unit is controlled by its own mind (ie, software) and servo drive components. The ELS (Electronic Shaftless Drive System) is connected to a main control (ie, main motor) that can effectively digitally drive the speed, plate cylinder position, and associated torque of each printing or processing unit through the fiber optic cable. Independent control. The ELS system software is responsible for the synchronous control of the whole machine in the operating position. The software operation and information transmission are completed instantly through the optical fiber. The microprocessor can perform highly efficient calculations and transfer the results of the calculations to the logic program controller and register control system. The ELS system controls the relative position of all plate cylinders up to 4000 times per second, and the position conversion accuracy is one millionth of a revolution (ie, one micron). The information exchanged by the servo-driven part completed through the optical fiber has a rate of 10 million bits per second and the synchronization error factor is less than two millionths of a second. Compared with the conventional mechanical axis-driven gravure printing machine, the new non-shaft driven gravure printing machine has the following advantages. 1, can be used low-cost plate cylinder can be used as a new type of roller (such as: polyurethane or composite material made of lightweight sleeve type drum), and the plate cylinder circumference no longer need to set incremental value, making the new type of gravure printing machine Platemaking costs are greatly reduced. 2. Register control and wire processing (1) The high-precision pre-registration (see Figure 1) uses the ELS system. The plate cylinder can be freely loaded into the print unit servo motor to automatically rotate the plate cylinder to “zeroâ€. "Mark", its positioning accuracy can reach 0.01MM. (2) The register self-diagnosis software during acceleration and deceleration will automatically read and record the parameter change amount in the initial stages of acceleration and deceleration, and self-supported to change the drum phase during acceleration and deceleration so that the printed week Compensation correction is made to improve the error. The final trapping error is significantly reduced. (3) Registering the traditional gravure printing machine in normal production process to achieve registration by changing the paper path length by the stepping motor driving the compensation roller. A shaftless drive gravure press registers the motor phase and roll position continuously and in a balanced manner. 20% reduction in paper path due to cancellation of compensating rollers between printing units. (4) When using wireless gravure printing machine to perform full-line printing, coating or compounding, it is possible to use a different circumference than the plate cylinder. The coating roller does not need to be equipped with a separate motor to drive the coating roller. At this time, the operator only needs to input the circumference of the coating roller as a set value into the system. 3. Shortening of product conversion time The gravure printing unit using the ELS system can be electronically connected to or disconnected from the entire drive system. On Le Duvens gravure printing machine, through the special “COSMOLINE†monitoring system, the unused printing units can be prepared for the next product during the whole operation process, and the product conversion time is shortened by 30%-50%. The waste generated during the commissioning of new products supports 40% - 60%. The shaftless driving gravure printing machine directly drives the printing plate cylinder by the motor, the noise of the machine operation and daily maintenance work are obviously reduced, and the operation and maintenance are more convenient. The entire printing unit can be fully enclosed, reducing the spread of solvents in the workshop. In summary, we have reason to miss the introduction of the new shaftless driving gravure printing machine will inevitably enhance the competitiveness of gravure printing in the short live market, so that gravure printing becomes a more comprehensive and more competitive printing process. .
1. Environmental protection: Kraft paper is made of natural pulp, degradable and environmentally friendly.
2. Light: the kraft food containers is relatively light and easy to carry compared with the bento box of other materials.
3. Durable: kraft paper has high strength and wear resistance, which can protect food from being damaged.
4. Breathability: kraft paper has a certain breathability, which can maintain the freshness of food.
5. Foldable: Kraft paper bento box can usually be folded for easy storage and reuse.
Brown paper bento boxes are suitable for various occasions, such as school, office, picnic and so on. They can be used not only as a bento box, but also as a packaging box, gift box and other purposes.
Flexible Packaging Printing Gravure and Flexo Printing Selection and Comparison
Valmet Group is one of the world's three largest manufacturers of papermaking equipment. The Group's packaging and processing group is mainly engaged in the production of soft packaging, printing, coating and compound equipment, the Italian music Duvens company and specialized production of various types of slitting, crosscutting and Vacuum Atelier after processing equipment such as Atlas.