What's The Difference Between 2-Side Seal Pouches vs. 3-Side ...

05 Jun.,2025

 

What's The Difference Between 2-Side Seal Pouches vs. 3-Side ...

As a brand owner, packaging plays a vital role in your product’s success. Not only does it protect your product, but it also serves as a powerful branding tool that attracts customers and communicates your message. If you’re exploring flexible packaging options, you’ve likely come across 2-side seal pouches (2SS) and 3-side seal pouches (3SS). But what’s the difference, and which one is the best fit for your product? Let’s break it down.

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What Are 2-Side Seal Pouches?

Overview

A 2-side seal pouch is folded in half, then sealed on two sides and left open at the top or bottom for filling. Once filled, the final seal is made, creating a three-sided enclosure.

Key Features:

  • Compact Design: The folded structure eliminates the need for one additional seal.

  • Cost-Effective: Requires less material compared to other pouch designs, reducing packaging costs.

  • Customizable Sizes: Ideal for single-serving products or small quantities.

Best for:

  • Single-use supplements like protein powders or vitamin sachets.

  • Trial-size cosmetic products such as creams or serums.

What Are 3-Side Seal Pouches?

Overview

A 3-side seal pouch is sealed on three sides, leaving one side open for filling. This design allows for a flat, rectangular shape with a neat and uniform appearance.

Key Features:

  • Premium Look: The fully sealed edges create a clean, polished aesthetic.

  • Enhanced Durability: Seals on three sides provide added protection against leaks and contamination.

  • Flexible Filling Options: Can be filled manually or through automated processes.

Best for:

  • High-end cosmetic products like face masks or sample kits.

  • Nutraceutical items such as herbal teas, gummies, or capsules.

Key Differences Between 2-Side and 3-Side Seal Pouches

How to Choose the Right Pouch for Your Brand

When deciding between 2-side and 3-side seal pouches, consider the following factors:

  1. Product Type:

    • For single-serving or cost-conscious items, 2-side seal pouches are a great option.

    • For premium products that demand a polished look, go with 3-side seal pouches.

  2. Brand Aesthetic:

    • If your brand prioritizes elegance and sophistication, 3-side seal pouches align better with that image.

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    • If simplicity and practicality are your focus, 2-side seal pouches work perfectly.

  3. Your Equipment:

    • If you're filling via automation, check which is the optimum form factor from your packer.

    • Tell your printer about the above and trial the film to ensure you get the desired result.

Conclusion

Both 2-side and 3-side seal pouches offer unique benefits, and the right choice depends on your product’s needs and your brand’s goals. By understanding the differences, you can select packaging that not only keeps your product safe but also resonates with your target audience. Need help deciding or designing your ideal pouch? Contact The Pouch house to explore custom pouches to help your brand succeed.

Comparison of Three & Four Side Sealing - KanzoPack

Four-side and Three-side Sealing Pouch: Comparison & Size/Capacity

Table of Contents Add a header to begin generating the table of contents Do you ever notice what is the packing way of the goods you purchase? This article explains two ways to pack goods: four-side sealing and three-side sealing. It includes definitions, features, suitable scenarios, and a comparison.

Four-Side Sealing and Three-Side Sealing Comparison

Four-side sealing and three-side sealing are two common ways of packaging goods. Four-side sealing means wrapping the goods with plastic film and sealing them on all four sides with heat. Three-side sealing means sealing on three sides and leaving one side open for loading the goods. You can see the difference from the photos.

As you can see, the 3-side sealing Sachet is of the same shape as a 4-side sealing sachet. But the front and back panels are actually regionally sealed and then folded at one side for product filling. Generally, the bottom or edge side of the bag is folded which allows the pouch to flex and have products adjust to the correct position of the pouch.

Characteristics of four-side sealing and three-side sealing

They both own advantages and disadvantages, let’s take a look at their characteristics respectively.

4 sided seal: Four-side sealing provides excellent sealing, protecting goods from pollution and damage. In addition, 4 side sealing pouch can provide a larger display area and a more beautiful presentation effect.

3 side seal: 3-side sealing pouch has lower costs, offers easier storage and handling. Also, without the need for any tools, just rip it open by the tear notch.

Applications of Four-side Sealing and Three-side Sealing

However, different goods have different packaging requirements:

Four-side sealing: Four-side sealing is great for products that need full protection, longer warranties, and brand displays, like high-quality electronics.
These products normally must be kept away from moisture, dust, and other things which could spoil their performance or quality.
Additionally, four-side sealing enhances the professional and high-quality appearance of products, boosting consumer trust in your company.

Three-side sealing: Three-side sealing is commonly used for products that are easy to clean and have short lifespans or low packaging requirements. These products include everyday items and food, such as ketchup, small snacks, facial masks.
These products usually do not need too many protection measures; most likely, they have an outer box to keep them safe. As long as they can keep their cleanliness and hygiene.
Also, this seal packaging method helps consumers easily open and use products, increasing their satisfaction and effectiveness.

Size/Capacity

Now, we will compare the size/capacity of packaging for four-side sealing and three-side sealing by using a table.

Three-side Sealing Size & Volume

Length (mm) Width (mm) Capacity (c.c.) 80 60 9 95 70 20 110 80 31 125 90 50 140 100 62 155 110 76 170 120 90 185 130 180 200 140 240 215 150 330 230 160 470

Four-side Sealing Size & Volume

Length (mm) Width (mm) Capacity (c.c.) 80 60 8 95 70 16 110 80 25 125 90 36 140 100 52 155 110 70 170 120 80 185 130 150 200 140 210 230 160 250 230 160 380

Summarize

After compare the size and volume from these two tables, we are going to talk about the Benefits of them.

Benefits of 3 Side Seal Bags:

  • 3 Side Seal bags are a cheap and practical option for packaging, using materials efficiently and working well.
  • These bags are larger volume in size and can hold more compared to the 4 side seal bags. Therefore, they are suitable for accommodating larger items.
  • Uniform shape of 3 Side Seal bags makes cartoning neat and consistent, improving shelf appearance.
  • Consumer convenience: We can easily incorporate a tear notch feature to simplify product access, enhancing the user experience.
  • Fast packaging: 3 Side Seal Bags work well with high-speed equipment, making manufacturing efficient.
  • Design allows for efficient storage and transport, consuming less space than rigid formats.

Benefits of Rectangular 4 Side Sealing Bags:

  • Different sizes available to accommodate different product volumes and meet various consumer needs.
  • Structural integrity: The straight edges and angles provide robustness, offering protection for products during transit and handling.
  • Efficient automation: The consistent dimensions facilitate automation in packaging lines with greater precision and less waste.
  • Presentation enhancement: The rectangular form facilitates effortless stacking and showcasing, enhancing shelf visibility and attracting customers.

Common Applications

  • Grounded goods / Powder
  • Healthcare
  • Supplements
  • Homecare products
  • Meal
  • Drip Coffee Sachet
  • Snacks
  • Frozen food
  • Pet treat
  • Nuts

OPTIONAL FEATURES

  • Easy-open tear notches
  • Press-to-seal closures
  • Smooth-edged corners
  • Visible product viewing window
  • Convenient hanger hole

Relate Product:

3 Side Seal Pouch
Packaging Film
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