What are the raw materials of paper bags? 2025 New
Paper bag manufacturing relies on three basic materials: paper, glue, and auxiliary materials. The degree of matching between material selection and production process directly determines the quality and profit of paper bags.
1.Paper thickness determines the processing method
(1) Thin paper (60-170gsm kraft paper, etc.)
Suitable for fully automatic roll paper bag machines. The roll paper enters the machine directly. The processing advantage is that the operation threshold is low. The printing module can be connected in series with the machine, so that the customized pattern of the paper bag can be completed quickly.
(2) Thicker paper (100-300gsm coated paper, white cardboard, etc.)
Suitable for fully automatic single-Sheet Paper Bag Machines. Paper below 190gsm can be processed directly by the creasing unit of the machine without die-cutting. The produced paper bags are more refined and have a greater profit margin.
(3) Manual processing
Manual processing is suitable for processing all thicknesses of paper. Paper below 80gsm can be folded directly by hand. When it is above 80gsm, the paper thickness is too large to be folded by hand. Therefore, a die-cutting machine is required to die-cut the paper for easy processing.
2.Choice of glue
| Production method | Glue type | Reason |
| Handmade | Water-based cold glue only | Hot melt adhesive temperature is too high and can easily burn worker's hands |
| roll fed paper bag machine | Water-based cold glue only | Hot melt adhesive solidification bulge affects the appearance of thin paper |
| sheet fed paper bag machine | Free combination of water-based cold or hot melt glue | Mixed use optimize cost and strength |
3. Comparison of production efficiency and quality control
(1)Manual Production and Quality
Ordinary Worker: 300 pieces/hour, Skilled Worker: 1000 pieces/hour; Defective Rate: 8-12%
(2)Advantages of automatc production
| Machine type | Production speed(such as:paper bag with handle) | Defective rate |
| roll fed paper bag machine | 100-200 PCS/Min | ≤0.3% |
| sheet fed paper bag machine | 60-150 PCS/Min | ≤0.3% |
| Note: The equipment needs to be adjusted by professional engineers to achieve continuous and stable production | ||
4. Matching the Product Positioning with the Accessories
• Economical Paper Bags (Roll Fed Machine)
Basic Configuration: handle patch paper roll,paper twist rope, etc.
• High-End Paper Bags (Single Sheet Fed Machine)
Basic materials can be used, or a variety of textured accessories can be added to enhance the quality of the paper bag, thereby increasing its profit margin.
• Embossed Handles Or Multi-strand Cotton Rope
• Exclusive Gift Bags: top card and bottom cards, ribbon ropes, and other materials
Therefore, choosing the right machine based on the paper and factory investment can help you make money quickly:
1. If initial capital is limited, manual bag making is suitable, allowing staff to grow alongside the bag-making factory.
2. Roll-fed paper bag machines are suitable for mass production of thin paper and are ideal for those new to the paper bag manufacturing industry, as they offer a low barrier to entry.
3. Sheet-fed paper bag machines have high entry barriers due to their high paper requirements and the many processes involved, such as hot stamping and laminating. These machines are suitable for those with significant capital or experience in the paper bag industry.
Zenbo Intelligent Machinery Co., Ltd. (established in 2009) is the only Chinese manufacturer that develops both roll fed and sheet fed paper bag machines. If you're considering entering the paper bag machine industry, please contact us and we will be happy to provide you with our services.