Assorted custom three side seal pouches displayed for different food and specialty packaging applications
CUSTOM FLEXIBLE PACKAGING

Custom Three Side Seal Pouches

Flexible three side seal packaging for food, tea, powders, snacks, pet treats and other products — with custom sizes, printing, materials and functional options for different applications.

Custom Sizes
Custom Printing
Barrier Structures
Window & Zipper Options
Premade flat pouches for a wide range of packaging applications
Green blue and silver plain three side seal sachets arranged together
3
Sealed on Three Sides Flat and space-efficient pouch format

What Is a Three Side Seal Pouch?

A three side seal pouch is a flat premade pouch sealed along three edges, leaving one side open for filling before the final seal is applied.

Its simple flat structure makes it suitable for a wide range of products, including snacks, tea, powders, dried foods, pet treats, cosmetic items and other compact packaged goods. The pouch can be customized with different materials, sizes, printing and functional features according to the product and packing requirements.

01

Flat Pouch Structure

A compact format that stores and ships efficiently before and after filling.

02

Flexible Material Options

Select packaging structures according to product protection, appearance and application needs.

03

Custom Printing

Printed graphics can be customized for different products, SKUs and brand requirements.

04

Functional Features

Tear notches, windows, hanging holes and zipper options can be added when appropriate.

Practical Features for Different Packaging Needs

Three side seal pouches can be customized with practical features that improve opening, display, product visibility and resealing.

01

Tear Notch

Easy-open notches help customers open the pouch cleanly without scissors.

02

Resealable Zipper

A zipper can be added when repeated opening and closing is needed after the pouch is first opened.

03

Clear Window

Transparent windows can reveal the packed product while retaining printed branding around the pouch.

04

Hanging Hole

Euro holes or round holes can support retail display when the product is designed to hang on hooks.

05

Strong Heat Seals

Seal width and pouch structure can be selected according to the product and filling requirements.

06

Rounded Corners

Rounded corners can improve handling and create a cleaner finished appearance for selected pouch formats.

Close-up views of pouch details including hanging hole tear notch side seal clear interior and zipper opening
Choose only what your product needs. Feature availability depends on pouch size, structure and application.
Silver aluminum three side seal pouch displayed beside stacks of matching flat pouches
Structure depends on the product. Material choice should balance barrier needs, appearance, filling method and final pouch performance.
MATERIALS & BARRIER

Choose the Right Material Structure for Your Product

Three side seal pouches can use different laminated structures depending on the product, required protection, appearance and packing process.

Some applications only need a simple clear or printed structure, while others may need stronger protection against moisture, oxygen, light or aroma loss. The final material structure should be selected around the actual product and storage requirements.

PET / PE

General Flexible Packaging

A common laminated structure for many dry products and general flexible packaging applications.

PET / AL / PE

Aluminum Foil Barrier

Foil-based structures can provide stronger protection from light and external conditions for products that need higher barrier performance.

NY / PE

Tough & Flexible Structure

Nylon-based structures can be considered where added toughness, flexibility or puncture resistance is important.

CLEAR FILM

Transparent Packaging

Clear structures allow direct product visibility and can suit selected food, vacuum and retail packaging applications.

Material selection usually depends on:
Product Type Moisture Sensitivity Oxygen Sensitivity Light Protection Aroma Retention Filling Method Storage Conditions Product Visibility
APPLICATIONS

What Can You Pack in Three Side Seal Pouches?

Three side seal pouches are widely used for compact products that benefit from a flat format, custom printing, barrier protection, clear windows or vacuum sealing.

White and orange printed snack pouch with a clear window showing packaged food
01

Snacks & Dry Foods

Suitable for compact snack packs, dried foods and portioned products that need printed branding or product visibility.

Black and yellow printed pet treat pouch with a large clear window
02

Pet Treats

Clear-window and printed pouch formats can be used for pet treats and other compact pet food products.

Orange spice sachet and green herbal tea sachet with printed designs
03

Tea, Spices & Powders

Small three side seal sachets work well for tea, spices, seasonings, powders and single-serve portions.

Black and gold printed three side seal pouch designed for beef jerky packaging
04

Jerky & Dried Meat

Printed flat pouches can be used for jerky and other dried meat products that need a compact retail-ready format.

Black three side seal facial mask sachet with gold printed design
05

Cosmetics & Personal Care

Flat sachets are suitable for facial masks, samples and selected cosmetic or personal care products.

Black and gold clear-window pouches containing cigar products
06

Cigar Packaging Pouches

Custom printed three side seal pouches can be used for cigar packaging, with options such as clear windows, hanging holes and resealable closures depending on the required pack format.

MORE APPLICATIONS The same pouch format can be adapted to many different products.
Sample Packs Vacuum Foods Nuts Ingredients Small Parts Cigar Packaging
SIZES & CUSTOM FORMATS

Size Reference for Three Side Seal Pouches

Three side seal pouches can be customized in width, height, material structure and sealing area according to the product, target fill volume and packing method.

The values below are practical references for selected flat pouch sizes. Actual capacity and finished pouch weight vary with material structure, product density, product shape, headspace and sealing requirements.

Representative Size Reference Selected flat pouch sizes for planning and comparison
Reference Only
Pouch SizeTotal ThicknessApprox. Weight / 100 pcsTypical Application
7 × 10 cmApprox. 140 μm0.10 kgSamples, spices and small portions
9 × 13 cmApprox. 140 μm0.17 kgTea, nuts and small snack packs
12 × 17 cmApprox. 140 μm0.31 kgMedium snack and dry-food packs
15 × 22 cmApprox. 140 μm0.50 kgNuts, dried foods and retail portions
20 × 30 cmApprox. 140 μm0.90 kgLarger retail and food packs
26 × 38 cmApprox. 140 μm1.50 kgLarge-format and bulk applications
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Capacity is product-dependent.

The same pouch size can hold very different weights depending on whether the product is powder, tea, nuts, jerky, pet treats or another item. Final size should be checked against the actual product before production.

SIZE SELECTION What we need to recommend a suitable pouch size
Product Type Target Fill Weight Product Dimensions Product Density Required Headspace Zipper or No Zipper Filling Method Seal Area
CUSTOM SIZE

Your pouch does not need to match a standard size.

Width, height and functional layout can be adjusted around the actual product and packaging process. If you already have an existing pouch, send us the dimensions or a sample for reference.

Get a Size Recommendation
PRINTING & FINISHING

Printing Options for Different Order Sizes and Design Goals

Three side seal pouches can use different printing and finishing methods depending on whether you need a simple stock-pouch overprint, a fully custom printed design or a decorative premium finish.

The best process depends on artwork complexity, number of colors, order quantity, pouch size and whether you are using an existing stock pouch or producing a fully customized pouch.

Tea sachet printing showcase with multiple custom three side seal pouch designs and rich color printing effects
01 CUSTOM PRINTING

Custom Full-Color Printing

A flexible choice for custom pouch designs with detailed graphics, multiple colors and different artwork across product SKUs.

  • Custom pouch artwork
  • Multi-color printed designs
  • Suitable for branded retail packaging
  • Useful when custom sizes or structures are required
Hot foil stamping showcase with custom tea sachet pouches featuring metallic decorative printing effects
02 DECORATIVE FINISH

Hot Foil Stamping

Metallic foil details can be added to selected design areas to create stronger contrast and a more premium shelf appearance.

  • Metallic decorative effect
  • Suitable for logos and selected design areas
  • Can highlight premium branding details
  • Used together with suitable pouch structures
Silk screen printing tea sachet showcase with custom flat pouches and stable single-color print effects
03 STOCK POUCH PRINTING

Silk Screen Printing on Stock Pouches

Silk screen printing is a lower-cost option for adding a simple one-color logo or design to existing stock pouch sizes without producing a fully custom printed pouch from the beginning.

MOQ From ~200 pcs
Recommended 1,000+ pcs
Colors Typically 1 Color
Pouch Size Existing Stock Sizes
  • Based on available stock pouch sizes
  • Usually cheaper than digital printing for simple one-color artwork
  • Suitable for small trial orders and simple branding
  • For larger quantities, digital printing may become more practical
WHICH PRINTING METHOD SHOULD YOU USE? Start with pouch size, artwork, color requirements and order quantity.

A stock pouch with one-color silk screen printing can be economical for simple low-volume projects, while fully custom printing gives more flexibility for pouch size, artwork and multiple colors.

Stock or Custom Size Artwork Complexity Color Count Order Quantity Pouch Material Repeat Orders
QUICK COMPARISON

Simple Stock Overprint vs. Fully Custom Printing

SILK SCREEN Best for simple one-color stock pouch printing

Lower entry quantity and lower cost for simple artwork, but limited to existing pouch sizes and typically one print color.

CUSTOM PRINTING Better for custom sizes and full-color designs

Offers more flexibility in pouch dimensions, artwork and color, especially as order quantities increase.

PRINTING QUANTITY GUIDE

Choose the Printing Method Around Your Quantity

The lowest unit price does not always come from the same printing process. For three side seal pouches, the practical choice depends on order quantity, pouch size, artwork, color requirements and whether you can use an existing stock pouch.

01 STOCK POUCH

Silk Screen Printing

From ~200 pcs Recommended: 1,000+ pcs

A practical low-cost option when an existing stock pouch size works for your product and the artwork can be printed in one color.

  • Uses existing stock pouch sizes
  • Typically one print color
  • Lower setup cost for simple branding
  • Good for trial orders and smaller quantities
02 CUSTOM PRINTING

Digital Printing

Small to Medium Custom Runs Full-color and custom pouch options

As quantity increases or the project requires custom sizes, multiple colors or more detailed artwork, digital printing can become the more practical option.

  • Full-color custom artwork
  • Custom pouch sizes available
  • Suitable for multiple SKUs
  • Useful for growing brands and repeat orders
03 LARGE PRODUCTION

Gravure Printing

Often Evaluated Around 20,000+ pcs Final crossover depends on pouch size

For larger and more stable repeat orders, gravure printing may offer better unit economics. The most suitable crossover quantity depends heavily on pouch dimensions and material consumption.

  • Better suited to larger repeat production
  • Suitable for stable artwork and specifications
  • Unit cost can improve as volume increases
  • Final recommendation depends on pouch size
PRACTICAL BUYING GUIDE

Do not choose by quantity alone.

A small pouch and a large pouch can use very different amounts of film, so the most economical printing method may change even at the same piece count.

Existing Size + 1 Color Start by checking stock pouch silk screen printing.
Custom Size + Full Color Digital printing is usually the more flexible starting point.
Growing Order Quantity Compare digital and gravure total cost before scaling up.
Large Repeat Orders Gravure may become more economical depending on pouch size.
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Quantity ranges are planning references, not fixed rules.

Final printing recommendations depend on pouch width and height, material structure, artwork, color count and repeat-order expectations. We can compare the available production routes before quotation.

NEED A COST COMPARISON? Send us your pouch size, quantity and artwork.
Compare Printing Options
SEALING GUIDANCE

Choose the Right Sealing Equipment for Your Pouch Structure

Three side seal pouches are supplied open on one side for filling, then closed with suitable heat-sealing equipment. The correct machine depends on pouch thickness, material structure, production volume and whether vacuum sealing is required.

Thicker laminated films and foil-based structures generally require more stable sealing pressure and temperature control than lightweight bags. For commercial production, equipment selection should be matched to the actual pouch specification before use.

01

Continuous Band Sealer

Suitable for continuous commercial sealing when production speed and consistent heat sealing are important.

02

Commercial Vacuum Sealer

Used for vacuum packaging applications such as meat, sausage, dried foods and other products that require air removal.

03

Impulse Sealer

A practical option for smaller production runs where the pouch structure is compatible with impulse heat sealing.

04

Household Vacuum Sealer

May work for selected lightweight vacuum bags, but thicker commercial laminated pouches may require stronger equipment.

!
Test sealing before full production.

Sealing temperature, dwell time and pressure should be adjusted to the actual film structure. A machine that works well with one pouch may not produce the same result with a thicker or different laminate.

Sealing equipment guide comparing continuous band sealer commercial vacuum sealer impulse sealer and household vacuum sealer for thicker pouches
MACHINE MATCHING Pouch thickness and structure matter.

Commercial laminated pouches may require stronger and more stable sealing equipment than ordinary household bags.

FREQUENTLY ASKED QUESTIONS

Questions About Custom Three Side Seal Pouches

Here are answers to common questions about pouch sizes, materials, printing, order quantities and sealing.

What is a three side seal pouch?

A three side seal pouch is a flat premade pouch sealed along three edges, leaving one side open for filling. After the product is packed, the remaining open side is heat sealed to complete the package.

Can I customize the pouch size?

Yes. Custom width, height, sealing area and functional layout can be produced according to your product and filling requirements.

If you already have an existing pouch, you can send us its dimensions or a sample for reference.

What materials are available for three side seal pouches?

Material options can include structures such as PET / PE, PET / AL / PE, NY / PE and transparent laminated films.

The right structure depends on the product, required barrier performance, appearance, filling method and storage conditions.

Can three side seal pouches have a zipper or clear window?

Yes. Depending on pouch size and structure, options can include resealable zippers, clear windows, tear notches, hanging holes and rounded corners.

What is the MOQ for silk screen printing on stock pouches?

Silk screen printing on existing stock pouch sizes can start from around 200 pieces. For better overall cost efficiency, around 1,000 pieces or more is usually recommended.

This option is generally used for simple one-color printing.

When should I choose digital printing?

Digital printing is suitable when you need custom pouch sizes, full-color artwork, multiple SKUs or a more flexible production quantity than traditional large-volume printing.

As order quantity increases, digital printing may become more practical than stock-pouch silk screen printing.

When should I consider gravure printing?

Gravure printing is generally considered for larger and more stable repeat production. For some three side seal pouch projects, it may be worth comparing gravure at around 20,000 pieces or more.

The actual crossover depends strongly on pouch dimensions, material usage, artwork and production requirements.

Can you print different designs for multiple SKUs?

Yes. Multiple artwork versions can be discussed for projects with different flavors, product variants or SKUs. The most suitable printing method depends on the total quantity and quantity per design.

What products can be packed in three side seal pouches?

Common applications include snacks, tea, spices, powders, dried foods, jerky, pet treats, cosmetics, sample packs, cigar packaging and selected vacuum-packed products.

The pouch structure should always be selected according to the actual product and packaging process.

What sealing machine should I use?

Equipment options can include continuous band sealers, commercial vacuum sealers and impulse sealers.

The correct machine depends on film thickness, laminate structure, sealing temperature, pressure and production speed. Thicker commercial laminated pouches may require stronger equipment than ordinary household bags.

How do I choose the correct pouch size?

Pouch size should be selected based on product dimensions, target fill weight, product density, required headspace, filling method and seal area.

The same pouch size can hold very different weights depending on whether the product is powder, tea, nuts, jerky or another product.

What information should I provide for a quotation?

To prepare a more accurate quotation, please provide your pouch size, required quantity, product type, preferred material structure, printing artwork and any required features such as zipper, window, tear notch or hanging hole.

If you are not sure about the structure or size, send us your product details and we can discuss suitable options.

STILL HAVE QUESTIONS? Tell us what you need to pack.

Send your target size, quantity, product and artwork requirements and we can help you review the available pouch options.

Ask Runlong Pack
START YOUR PACKAGING PROJECT

Need Custom Three Side Seal Pouches?

Tell us what you need to pack, your target size, quantity and printing requirements. We can help you review the pouch format, material structure and suitable production option.

Custom Sizes
Custom Printing
Material Guidance
MOQ Options
For a faster quotation, please include pouch size, quantity, product type and artwork if available.
WHAT TO SEND

Basic information for quotation

01

Pouch width × height

02

Required quantity

03

Product to be packed

04

Artwork or printing requirement

05

Required zipper, window or other features