How are kraft paper bags made? 2025 New

From a manual production perspective, it's suitable for small-batch, personalized kraft paper bag production. First, the raw material needs to be processed. A slitting machine cuts the rolled kraft paper into individual sheets that match the unfolded dimensions of the bag. The slitting machine can adjust the cutting specifications based on design requirements, ensuring the dimensional accuracy of each sheet and laying the foundation for subsequent handmade production. For kraft paper bags with handles, a handle machine is also required. This machine processes specialized kraft paper rolls into handles of the required length and width. After completion, a manual process removes the material, evenly applies water-based glue to both ends of the handle, and precisely adheres it to the designated locations inside the folded kraft paper bag. Finally, manual pressure is applied to ensure a secure bond and prevent the handle from falling off during use. The advantage of manual production lies in its flexibility to accommodate small-batch orders and the lack of complex machine adjustments. However, this method is less efficient, and the quality of the finished product depends on the operator's proficiency. Kraft paper bags command low prices and profit margins, so most people avoid pure handmade production.

If you want to improve efficiency and control machine costs, a combination of automatic roll fed machines without handle and manual production is a better choice. This method is especially suitable for the production of medium-sized batches of kraft paper bags with handles. The production process needs to be carried out in two steps: the first step is to use a automatic roll fed machine to make basic kraft paper bags without handles. The automatic roll fed machine can directly use kraft paper rolls as raw materials. Through the folding, gluing and other units inside the machine, it automatically completes the formation of the paper bag body, which greatly improves the production efficiency of basic paper bags compared to manual production. The second step is to use a handle machine alone to make paper handles. After the handles are made, the handles are manually pasted onto the basic paper bags produced by the automatic roll fed machine to complete the production of kraft paper bags with handles. This model eliminates the complex automatic handle pasting unit in the fully automatic machine, effectively reducing equipment procurement costs, while retaining the efficiency of mechanized production of basic paper bags, balancing the needs of production efficiency and cost control.

Fully automatic machines are the primary choice for large-scale kraft paper bag production, particularly suitable for high-volume production and effectively reducing defective product rates. A fully automatic Kraft Paper Bag Machine with handles integrates the entire process: raw material processing, bag forming, handle application, and gluing. The machine directly accepts a roll of kraft paper, processes the paper through built-in slitting and creasing units, and then glues the bag side and folds. Simultaneously, the machine's built in handle-making and gluing units simultaneously create the paper handles and automatically apply glue to precisely attach the handles to the inside of the bag. This process requires no manual intervention, significantly reducing labor costs. To produce kraft paper bags without handles, there's no need to change equipment or adjust complex parameters. Simply disable the handle-making and gluing functions and switch to basic paper bag production. This "one machine serves two purposes," improving equipment utilization and reducing the time and cost of switching between different products. It's suitable for large-scale, multi-category kraft paper bag production.

Therefore, you can choose the appropriate production method based on the budget you want to invest in your paper bag project to earn the corresponding profit. Zenbo is the only company in China that produces both sheet fed paper bag machines and roll fed paper bag machines. Welcome to contact us for consultation.