What are the Quad Seal Bags?

About quad seal bags

Quad seal bags have four sealed edges, resembling two films bonded together with their four edges sealed, which is the origin of the four-side seal.

Features of quad seal bags

• The product has a good three-dimensional appearance and, once packed, forms a cubic shape. It can be used for food preservation, is reusable multiple times, and makes full use of the packaging space.

  
  

• The unique four-side seal design can effectively prevent bursting. The new printing process highlights pattern design and trademark effects, allows for special trademarks or designs, and provides excellent anti-counterfeiting effects.

  
  

• It enhances the product's premium feel, making it stand out.
  

  
  

• The appearance is elegant, and it is suitable for steaming, moisture-proofing, has a good vacuum effect, low oxygen permeability, high sealing performance, and good heat-sealing performance.

  
  

• It has strong puncture resistance, anti-oxidation properties, and effectively protects the product from external environmental factors, thus extending the shelf life.

Advantages of quad seal bags

• Unlike pillow packs, quad seal coffee bag do not have the situation of the four-layer material sealing overlap, thus providing better sealing performance;

  
  

• Unlike pillow packs, quad seal bags have a larger printing area, allowing for the printing of instructions and other information;

  
  

• Thin slice products can be packaged in multiple rows to increase packaging speed;

  
  

• After integrating the same cut surface of the roll film, the printing pattern is not easily misaligned.

Main products of quad seal bags 

• Composite bags made of OPP, CPP, PET, Nylon, aluminized films, etc.;

  
  

• Blank or multi-color hanging card bags, self-adhesive bags made of OPP, CPE, PE, PP, etc.;

  
  

• Various sizes of express bags, flat bags, and gusset bags made of PE, PP, PO, OPP, CPP, etc.;

  
  

• PVC handle bags, zipper bags, eco-friendly bags, and other series of products.

The produced quad seal bags can be expanded into a three-dimensional bag shape, making good use of space, suitable for large volume packaging needs. The unique four-side seal design can effectively prevent bursting. They are mainly used for powder foods, grains, dried fruits, and tea leaves, which require storage in the bag. Some foods require air to be drawn out for hygiene, environmental protection, and extending shelf life.

Industry challenges of quad seal bags

With the advancement of technology and the rapid development of the economy, companies are becoming more sensitive to the differentiation of appearance and packaging costs, making quad seal bags increasingly the preferred product of packaging equipment suppliers.

A common difficulty with custom quad seal bag is their insufficient adaptability to large volume materials. Since the entire film forms the bag first and then is cut, the composite film must be relatively flat when forming the bag. The bag body is planar, making it difficult to load large volume materials, and the space utilization inside the bag is relatively low.

Quad seal bags have high requirements for heat sealing quality, allowing for free layout design on a larger surface, thus improving the aesthetics of packaging.

As an innovator in the packaging industry, ForestPac will continue to explore and practice, providing customers with more diverse, eco-friendly, and creative the solutions of quad seal bags. Choose ForestPac and start a new chapter of personalized packaging, building a better future together.