Flat bottom bags( Eight-sided seal bags, Octagonal bags)

Custom all kinds of types of bags, such as three-sided seal bags, back seal bags, side gusset bags, flat bottom bags etc.
flat bottom bags


Flat bottom bags(eight side seal bags, octagonal bags), also known as block bottom bags or square bottom bags, are a popular type of packaging used in various industries. These bags are characterized by their unique shape, which allows them to stand upright on store shelves or other surfaces.

 One of the key features of flat bottom bags is their stability. The flat bottom design provides a solid base, preventing the bag from tipping over and ensuring that the contents remain secure. This makes them ideal for packaging products such as coffee, tea, snacks, pet food, and more.

 Flat bottom bags are typically made from laminated materials, which offer excellent barrier properties to protect the contents from moisture, oxygen, and other external factors. The laminated structure also provides durability and strength, ensuring that the bag can withstand the rigors of transportation and handling.

 These bags often feature a resealable closure, such as a zipper or a heat seal, allowing consumers to easily open and close the bag multiple times while keeping the contents fresh. Some flat bottom bags also come with additional features like tear notches for easy opening or a clear window to showcase the product inside. 

In terms of customization, flat bottom bags offer a wide range of options. They can be printed with vibrant graphics, logos, and product information to enhance brand visibility and attract consumers. Additionally, various sizes and capacities are available to accommodate different product quantities


The manufacturing process of flat bottom bags 

The manufacturing process of flat bottom bags typically involves several steps. Here’s a general overview: 

1. Material selection: The first step is to choose the appropriate material for the flat bottom bags. Common materials include plastic films, such as polyethylene or polypropylene, which are often laminated for added strength and barrier properties. 

2. Printing: If desired, the bags can be printed with custom designs or branding using various printing techniques, such as flexography or rotogravure. 

3. Film extrusion: The selected materials are then extruded into thin films. This process involves melting the plastic resin and forcing it through a die to create a continuous film. 

4. Bag making: The flat bottom bags are formed by cutting and sealing the film. The exact method may vary depending on the specific bag design and equipment used. One common method is to fold the film in half and seal the sides to create a tube. The bottom of the bag is then formed by folding and sealing the corners to create a flat base. 

5. Gusset formation: Some flat bottom bags may include gussets, which are triangular-shaped folds on the sides of the bag that allow for expansion. Gussets can be formed by folding and sealing the film at specific angles. 

6. Additional features: Depending on the intended use, flat bottom bags may include additional features such as resealable zippers, tear notches, or handles. These features are typically added during the bag making process. 

7. Quality control: Throughout the manufacturing process, quality control measures are implemented to ensure that the flat bottom bags meet the required specifications. This may include checking for proper sealing, print quality, and overall bag integrity. 

8. Packaging and distribution: Once the flat bottom bags are manufactured and inspected, they are typically packaged and prepared for distribution. This may involve stacking, boxing, or palletizing the bags for transportation to customers or retailers.

It’s important to note that the specific manufacturing process may vary depending on the equipment and technology used by different manufacturers.

Design layout of flat bottom bags

coffee bag 250g

Common applications

FAQs for flat bottom bags

1. What are flat bottom bags?

Flat bottom bags are a type of packaging that have a flat base and stand upright on their own. They are commonly used for packaging various products such as food, pet food, coffee, and more.


2. What are the advantages of using flat bottom bags?

Flat bottom bags offer several advantages, including:

– Improved stability and balance due to their flat base, making them ideal for retail displays.

– More efficient use of shelf space compared to traditional stand-up pouches.

– Enhanced product protection and preservation, thanks to their high barrier properties.

– Easy filling and sealing processes, ensuring convenience for manufacturers and consumers.


3. What materials are used to make flat bottom bags?

Flat bottom bags are typically made from laminated films that provide excellent barrier properties to protect the contents from moisture, oxygen, and other external factors. The films used can include layers of plastic, aluminum foil, and other materials, depending on the specific requirements of the product being packaged.


4. Can flat bottom bags be customized?

Yes, flat bottom bags can be customized to meet specific branding and product requirements. Customization options include printing logos, product information, and designs on the bags. Additionally, various features such as resealable zippers, tear notches, and hang holes can be added for convenience.


5. Are flat bottom bags environmentally friendly?

Flat bottom bags can be environmentally friendly depending on the materials used and their end-of-life disposal. Some manufacturers offer flat bottom bags made from recyclable materials, such as polyethylene or polypropylene. Additionally, some bags are designed to be compostable or biodegradable, offering more sustainable options.s.

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