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Custom Plastic Flat Bottom Bags Manufacturer in China

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Custom Plastic Flat Bottom Bags Manufacturer in China | Premium Flexible & Composite Packaging Supplier for Food, Pet and Cosmetic Products

Plastic flat bottom bags, also known as box pouches, are a premium type of flexible packaging designed to combine strong shelf stability with high-capacity storage and excellent branding space. Their reinforced flat base allows the bag to stand upright, making them highly suitable for retail display and e-commerce packaging.


Shenlong Packaging Products Co., Ltd. is a professional custom plastic flat bottom bags manufacturer in China, specializing in flexible packaging and composite packaging solutions for global brands in food, personal care, and pet product industries. We focus on customized structures, materials, and printing to meet different market requirements.


Website: https://www.sl-packaging.com/
Email: jichenao010924@gmail.com



Why Plastic Flat Bottom Bags Are a Premium Flexible Packaging Option

Compared with traditional stand-up pouches or pillow bags, flat bottom bags offer a more stable structure and higher visual appeal on shelves.

Key advantages include:

  • Strong 3D box structure for shelf display

  • Large printable surface for branding

  • High filling capacity

  • Stable standing design

  • Excellent product protection

  • Suitable for automated packaging lines

This structure is widely used in premium retail packaging.

Custom Plastic Flat Bottom Bags Manufacturer in China




Customization Options for Plastic Flat Bottom Bags

Customization is the core advantage of Shenlong Packaging. We design each flat bottom bag based on customer product requirements and branding strategy.

Fully Custom Size Design

  • Width, height, and gusset dimensions

  • Volume-based capacity customization

  • Small retail packs to large bulk packaging


Custom Composite Material Structures

Different barrier levels are available depending on product needs:

  • PET / PE

  • PET / VMPET / PE

  • PET / AL / PE (high barrier)

  • Kraft Paper / PET / PE (eco-style packaging)

  • PA / PE (high durability)

Each structure is selected based on moisture, oxygen, and aroma protection requirements.


Custom Printing & Branding

We provide high-quality gravure printing for strong shelf impact:

  • Full-color CMYK printing

  • Matte or glossy finish

  • Brand logo integration

  • Product storytelling layout

  • QR code and barcode printing

  • Seasonal or promotional designs


Custom Functional Features

Optional features include:

  • Resealable zipper

  • Tear notch

  • Transparent window

  • One-way degassing valve (for coffee)

  • Hang hole

  • Rounded corner design

  • Easy-tear opening



Industries Using Plastic Flat Bottom Bags

Food Packaging Industry

Flat bottom bags are widely used for premium food packaging such as:

  • Coffee beans and ground coffee

  • Tea leaves

  • Protein powder

  • Nuts and dried fruits

  • Cereals and granola

  • Chocolate and snacks

The box structure improves shelf visibility and product freshness.


Pet Food Packaging

Ideal for:

  • Dry dog food

  • Cat food

  • Pet treats

  • Freeze-dried snacks

The strong base supports heavier filling weights and large volume packaging.


Cosmetic and Personal Care Products

Used for:

  • Bath salts

  • Facial mask powder

  • Beauty supplement powders

  • Skincare refill packaging

Premium appearance helps improve brand positioning.


Household and Functional Products

Suitable for:

  • Laundry powder refills

  • Cleaning agents

  • Detergent powders

  • Home care products

The structure supports stable storage and easy handling.



Why Flat Bottom Bags Are Different from Other Flexible Packaging

Unlike standard zipper bags or stand-up pouches, flat bottom bags provide:

Stronger Shelf Stability

The reinforced bottom structure prevents tipping over during display.


More Branding Space

Five printable panels allow better design layout and marketing communication.


Higher Filling Efficiency

Suitable for both manual and automatic filling systems.


Premium Packaging Appearance

Commonly used by brands aiming for higher market positioning.



Material and Barrier Performance

Shenlong Packaging uses advanced laminated materials to ensure product protection.

Moisture Barrier

Protects powder, food, and dry goods from humidity.


Oxygen Barrier

Extends shelf life for coffee, snacks, and nutritional products.


Aroma Retention

Maintains freshness for coffee, tea, and food ingredients.


Light Protection

Aluminum foil layers provide UV resistance for sensitive products.



Manufacturing Process

1. Material Selection

Choosing suitable composite film based on product requirements.


2. Printing Process

High-precision gravure printing ensures color consistency and branding clarity.


3. Lamination

Multiple film layers are bonded for barrier performance and strength.


4. Bag Forming

Flat bottom structure is formed with precision folding and sealing.


5. Quality Inspection

Each batch is tested for:

  • Seal strength

  • Printing accuracy

  • Bag alignment

  • Zipper performance (if included)

  • Overall durability



Case Study: Premium Coffee Brand Packaging

A coffee brand required upgraded packaging for retail expansion.

Requirements

  • High barrier structure

  • Premium appearance

  • Degassing valve

  • Stable shelf display

Solution

Custom PET/AL/PE flat bottom bags with one-way valve and matte finish printing.

Result

  • Improved shelf visibility

  • Better aroma preservation

  • Stronger brand positioning



Case Study: Protein Powder Brand

A nutrition company needed durable packaging for sports nutrition products.

Requirements

  • Large capacity

  • Strong base support

  • Resealable zipper

  • High-quality branding

Solution

Custom flat bottom bags with reinforced bottom and full-color printing.



OEM & Custom Packaging Services

Shenlong Packaging provides full OEM/ODM support:

  • Custom dimensions

  • Material structure design

  • Printing artwork development

  • Private label packaging

  • Packaging consultation

  • Bulk production support

We help brands develop packaging aligned with market positioning and product requirements.



Why Choose Shenlong Packaging Products Co., Ltd.

Shenlong Packaging focuses on high-quality flexible packaging and composite packaging solutions for global industries.

Factory Advantages

  • Advanced laminated film production

  • Professional gravure printing system

  • Strong customization capability

  • Stable mass production capacity

  • Export experience for global markets

  • Technical packaging support

We supply packaging solutions to food, pet, cosmetic, and household product industries worldwide.



Conclusion

Plastic flat bottom bags are a premium form of flexible packaging designed for strong shelf performance, large capacity, and high-quality branding. With excellent structural stability and customizable design options, they are widely used in food, pet food, and personal care industries.


Shenlong Packaging Products Co., Ltd. provides fully customized plastic flat bottom bag solutions with advanced composite packaging technology, supporting global brands with OEM production and flexible design services.


Website: https://www.sl-packaging.com/
Email: jichenao010924@gmail.com



Frequently Asked Questions

What are plastic flat bottom bags used for?

They are commonly used for coffee, snacks, pet food, powder products, and cosmetic packaging.


Can flat bottom bags be customized?

Yes. Size, material structure, printing, zipper type, and design can all be customized.


What makes flat bottom bags different from stand-up pouches?

Flat bottom bags offer better stability, more printing space, and a premium box-like structure.


Do you support OEM production?

Yes. Shenlong Packaging provides full OEM and private label packaging services.



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jichenao010924@gmail.com
Industrial Park, Shenze County, Shijiazhuang City, Hebei Province (Gengzhuang Village)
 

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