Necessary materials

1. Fabric (polyester, nylon, cotton).

2. Zipper.

3. Rivet.

4. Sewing thread.

5. Pocket lining.

6. Snap buttons.

7. Shoulder strap.

8. Accessory bag.

Production process

1. Design: Create a design and backpack pattern.

2. Cut fabric: Cut fabric according to the design pattern.

3. Sew the backpack body: Sew the backpack body parts together.

4. Install zipper: Install zipper and snap buttons.

5. Attach accessory bag: Attach accessory bag and pocket lining.

6. Hem sewing: Sew the hem to increase durability.

7. Quality control: Check product quality.

8. Finishing: Finish the product and pack.

Detailed steps

1. Cut fabric: Use an automatic or manual fabric cutting machine.
2. Sew the backpack body: Use an industrial sewing machine.

3. Install the zipper: Use a zipper press.

4. Attach the accessory pocket: Use a sewing machine or rivets.

5. Quality control: Check the quality of the fabric, sewing, and installation.

Production time

The production time of a backpack depends on:

1. Type of fabric.

2. Design complexity.

3. Number of products.

4. Equipment and technology used.

Production cost

Production cost includes:

1. Materials.

2. Labor.

3. Equipment and machinery.

4. Management cost.

Technical requirements

1. Sewing technique.

2. Fabric cutting technique.

3. Zipper installation technique.

4. Quality control technique.

Quality standards

1. ISO 9001 standards.

2. Fabric quality standards.

3. Labor safety standards.

If you need more specific information or want to know the backpack production process for Saigon Hand Bags company, please provide more information.