Description

1 Introduce

In the Chinese market, high-gloss aluminum foil box-bottom pouches for pet food have become increasingly popular. This type of packaging not only highlights the premium quality of the product with its sleek, glossy finish but also ensures reliable protection during filling, transportation, and distribution. Its combination of visual appeal and functional performance makes it a preferred choice for many pet food brands seeking to enhance both product presentation and safety.

Here, we will provide a further analysis of this amazing dog food bag and hope that you will receive a fantastic package for your products.

2 Foil Materials

This foil material is a reinforced structure with excellent properties for dog food packages. The foil structure is PET/AL/LDPE, with a graphic as below.

Let’s first get a further understanding of each substrate layer material.

PET12

PET film, or polyethylene terephthalate film, is a thermoplastic polymer resin that is a type of plastic film. It is a versatile material with many uses due to its physical, mechanical, optical, thermal, electrical, and chemical properties. PET film is available in various thicknesses, widths, and transparencies.

PET film has many uses, including:

• Packaging: PET film is used in containers for food and liquids, as well as in flexible packaging.
• Manufacturing: PET film is used in thermoforming.
• Engineering: PET film is combined with glass fiber to create engineering resins.
• Films: PET film is used for antimicrobial and insulation films, surface protection, hard-coats films, protective films, and printable films.

Aluminum

Aluminum foil is a thin, pliable sheet of aluminum alloy that is often used for wrapping and covering food during cooking. It is made by rolling large slabs of aluminum until they are less than 0.2 millimeters thick, and then solidifying the molten alloy between water-cooled rollers. During the final rolling process, two layers of foil are passed through the mill at the same time, resulting in one shiny side and one dull side. The different finishes do not affect how the foil reacts with food, so it doesn’t matter which side is facing up or down when cooking.

LDPE

LDPE film is short for low density polyethylene film, which is the most common used inner sealing film for multi-layer flexible packaging in various applications.

 

 

 

 

The final thickness for this foil laminate should be 120 microns, with a tolerance +-5%. and the toughness will be enough to present a good standing effect for finished bags.

You may read here on our company website to get a deeper understanding of PET/AL/LDPE Foil Laminate and see how it can help you to decide the ideal packages.

PA/Al/LDPE Foil Laminate Materials

3 Properties and Quality Assurance

3.1 Exquisite print quality

Our rotogravure press, capable of printing up to 10 colors, delivers exceptional artwork through advanced gravure printing technology. Supported by cutting-edge print techniques and a rigorous defect inspection system, we consistently achieve outstanding visual effects, ensuring our customers’ designs are reproduced with remarkable precision and impact.

You are advised to watch the video below to have a further understanding of the print quality of this standing pouch package for pet foods.

In our manufacturing plant, we place great emphasis on achieving high color fidelity and maintaining consistency across repeated print orders. The following is a brief introduction to our approach and practices.

a.  Color Analyzer

The color analyzer is one of the key auxiliary tools in our system, designed to achieve the highest standards of color fidelity. The eXact Advanced goes beyond simply validating CMYK and spot color inks. It is capable of simultaneously measuring four M modes to visualize the spectral reflectance of substrates or inks, assess the concentration of specific inks, and evaluate color differences on both white and black backgrounds.

b. Pantone Color Code

When working with spring service suppliers and customers, color accuracy is especially important given the large areas printed in a single Pantone shade. For many Pantone colors, the final appearance can be influenced by factors such as the printer, the paper substrate, and even environmental conditions during printing. To ensure consistency, we confirm the exact Pantone Color Code with customers during the artwork design stage, prior to moving the order into production.

c. Physical Printed On Photo Paper

Computer files such as JPG, PDF, PSD, AI, etc can not be taken as the guide to determine the color in print produce, as they present the colors through electronic screening devices. Different electronic screens may be set in different parameters by the various manufacturers, which will inevitably interfere with the color presentation. Artwork can only be a reliable guide when printed on a physical substrate, with the most common photo paper applied.

You may read here to understand more about how our company ensures color fidelity and consistency for all our orders.

Measures taken to achieve high color fidelity and consistency in reprints

3.2 Excellent Glossy Finish Effect

The premium PET bag achieves its glossy finish through a uniform layer of matte lacquer applied over the PET substrate. This coating not only ensures excellent adhesion but also delivers a smooth, refined appearance. Beyond its elegant look, the lacquer offers superior scratch resistance, effectively preventing fine surface lines that can occur when the foil passes through rollers during the bag-making process.

Additionally, there are alternative methods to achieve a glossy finish for PET food packaging. You can explore more options in this [post] if you’re interested.

How is matte finish achieved on standup pouches

3.3 Excellent Dimension Stability

There is a growing demand for dimensional stability in pet food bags, especially as roasters and packers seek to improve production efficiency with high-speed filling lines. At our company, we understand this requirement well and are committed to maintaining strict dimensional control. By continuously narrowing tolerance levels across every order, we ensure consistent quality and reliable performance in long-term supply.

3.4 Delicate Bag Making

The bag is achieved with delicate details, which can create a perfect impression for the consumers when they pass by the products, and cause them a purchase. Some customers do like to buy a product out of its gorgeous profile.

3.5 High Barrier Performance

This foil laminate is finished with a thin layer of aluminum, providing the highest level of protection against oxygen and moisture. Such a barrier is essential for roasted coffee beans, as it preserves their original flavor and aroma over an extended period, ensuring that consumers can enjoy the coffee at its best.

3.6 Fantastic Standup Effect

With its innovative box-style bottom, this stand-up pouch stands tall on shelves once filled, providing excellent shelf presence. This practical design supports brand visibility and creates a stronger appeal to consumers, ultimately driving sales.

3.7 Great Mechanical Strength

This reinforced laminated foil can greatly protect pet food packages ranging from 100g to 5lb volume.

We perform various inspections and tests to check the mechanical strength of the finished pouch, like drop tests, hard sudden strikes, anti-pressure tests

• Tensile Strength
• Sealing Strength
• Anti-puncture Strength
• Burst Impact Strength
• Anti-pressure Property

The above tests are performed against each order, on customer requirements, and you may check the exact values of this foil material PET12/AL7/PET12/LDPE in the Technical Date Sheet part of this post.

3.8 Smooth Zipper

The Tab Zipper (also known as the Rip Zipper) is designed to make pet food pouches effortless to open.
With a simple pull from the designated tab, the package tears cleanly and smoothly,no scissors required,while maintaining the pouch’s overall strength and freshness.

Seamlessly integrated into the bag, the Tab Zipper ensures a sleek, wrinkle-free appearance that enhances both functionality and shelf appeal, offering consumers a premium and convenient unboxing experience.

The video below will give you a further explanation of the smooth zipper.

 

4 Quality Control Measures

Our manufacturing plant implements rigorous quality control measures to ensure that every order meets the specific requirements of each customer. With over ten years of experience in the industry, we have developed a comprehensive QC manual that standardizes our processes, ensuring that each product is produced according to precise and consistent procedures

Here, please allow us to guide you further into our QC system.

4.1 Manufacturing Traceback

We apply a strict recording system to document the manufacturing details, such as environmental conditions, craftsmanship parameters, production facility conditions, etc, which allows us to trace back whenever there is a problem.

4.2 QC Test Report Against Each Order

There will be a QC test report issued against each order produced, with the core items evaluated in it.  It is highly appreciated by our customers.

You may read here to understand the QC test report for an order of 250g and 1000g dog food bag.

4.3 Print Inspection

In our manufacturing plant, the print inspection is always taken and done in a serious way, as we will never allow the customer artwork to be achieved in a way that deteriorate their business. On our gravure print press, there is in-line inspection system which can eliminate more than 98% of the defects in the printing process.

You may check how it works on our control panel.

 

There is also a supplementary off-line inspection equipment, to allow us to do the print inspection again whenever it seems necessary.

We are now producing dog food pouch. against customer artwork, and we surely love to support the startup and market-testing period for our customers. We will accept a minimum order quantity of 10,000 bags printed against customer artwork design.

4.4 Airtight Property Test

The finished coffee bag should be completely airtight, to get the products well-protected from oxygen and moisture in the environment. We perform the airtight property test against each order with the device as below.

In actual operation, we will pick up 1 bag every 1,000 pcs, and perform the test following the procedure in our QC manual.

4.5 Gas Release Property Test

The gas will be released from the inside when the air pressure for the inside is 2~7 mbar than the outside environment. Usually, we will immerse the valve welded bag under the water, and check if the degassing valve works well.

4.6 Drop Test

Drop testing is widely regarded as a highly reliable method to assess whether coffee bags possess sufficient strength to withstand various conditions. This test simulates real-life scenarios, such as when products accidentally fall from store shelves, subjecting the finished bags to sudden and significant impact. In our routine quality control process, we perform drop tests on every order to ensure product durability. Of course, the specific standards for these tests are determined based on the individual requirements of each customer.

You are advised to watch the video below, for a further understanding.

 

 

After 5 drops for each bag, none of them breaks,  all are fine and dandy.

4.7 Hard Sudden Strikes on inflated coffee bags

Hard sudden strikes should be taken as a more fierce test method than drop test, as it causes much higher force on inflated packages.

Let’s watch the video to understand how we perform this test in our manufacturing plant.

4.8 Anti-Pressure Test

Pressure-resistance testing is an essential method for evaluating whether a package can provide reliable protection for its contents, particularly for liquid products such as household detergents or windshield washer fluids. For coffee packaging, we routinely conduct anti-pressure tests as part of our daily quality control processes, ensuring that every order meets high standards of mechanical strength and durability.

When a coffee bag leaks or breaks, it’s not just a minor mishap,it can create serious problems for distributors, manufacturers, and ultimately, the customers. Avoiding such incidents is critical to maintaining trust and smooth operations.

Sometimes, for easier and fast operation, we may just get one person to stand on the well-sealed and inflated coffee bag, to check if there is any burst of them.

 

4.9 Easy Rip Tear Zipper Test

The zipper on the packaging must be easy for consumers to open by hand. If it is difficult to rip, it may negatively affect the overall product experience. Ensuring ease of use not only enhances customer satisfaction but also encourages repeat purchases, as consumers are more likely to return to products that are convenient and user-friendly.

Here, we just perform the tear test on this 12oz flat-bottom lifeboost coffee bag, you may get a further understanding how easily the zipper can be torn.

4.8 Laboratory Tests

Laboratory testing plays a crucial role in revealing the intrinsic properties of foil materials that cannot be seen by the naked eye. These scientific analyses provide valuable insights into our bag production, allowing us to deeply understand material performance and make data-driven improvements.
By applying these findings with precision, we continuously refine our craftsmanship , striving toward the creation of bags that embody superior quality, durability, and aesthetic excellence.

For more technical details, please refer to the Technical Data Sheet section of this post.

4.9 Third-party Inspection

Third-party inspection is available for all our orders on agreed standards or regulations.

5 Human Food Safety

All film materials, inks, adhesives, and solvents used in the production of food bags and packaging materials fully comply with human food safety regulations. Migration tests were conducted on these multilayer flexible pouches, which are in direct contact with food, and the results are illustrated in the graphic below, showing the mass spectra obtained. These data demonstrate the safety and suitability of the packaging materials for food applications.

Through the below link, you will be able to study the certificates on each of the materials adapted in our factory.

Human Food Safety

 

7 Dieline of pet food bags

The die-line of this standing pouch package is essential when customers want to achieve a fantastic artwork design for their package. All the details, like dimension, valve position, and zipper position are well stipulated in this die-cut line.

We attach the editable PDF file here, and the customer can just download and forward it to his designer for further creative work.

Design Template 12oz coffee beans W125XH230+Gusset80+Flat Bottom Pouch

8 Technical Data Sheet of high glossy aluminum foil box bottom pouch for pet foods

Here, we include the specifications on some main items of this multilayer dog food bag, with the videos showing the test progress in the later columns.

You may check the attached PDF file for a piece of further knowledge on the specifications of this 2.5kg Matt finish flat bottom doypack for dog food.

Some main items are listed below.

1. Dimension Tolerance
2. Print Appearance
3. Yield (grams per square meter)
4. Tensile Strength (Mpa)
5. Elongation Rate  (%)
6. Coefficient of friction, short as COF
7. Solvents Left (mg/m2 )
8. Sealing Strength (N/15mm)
9. Sealing Conditions
10. Bond Strength (N/15mm)
11. Burst Strength (J)
12. Anti-Puncture ability (N)
13. Drop Test Ability (cm)
14. Anti-pressure ability (kgs)
15. Water Vapor Transmission Rate (g/m2/24hr)
16. Oxygen Transmission Rate (cc/m2/24hr)

Just reach us if you have any questions with any of the items.

9 More Sustainable Options

With the growing global concern over plastic pollution, an increasing number of manufacturers are turning to more sustainable packaging solutions. Options such as compostable films, recyclable mono-material packages, and plant-based materials are gaining popularity due to their eco-friendly properties. Unlike traditional plastic films, which are typically derived from fossil fuels and are difficult to recycle or decompose, these sustainable alternatives offer a significantly lower environmental impact, supporting both circular economy initiatives and long-term ecological sustainability.

Here, we are going to share some of the trending sustainable packages for the coffee market.

9.1 Compostable film material packages

The compostable substrate films we adapt to convert the multi-layer flexible pouches are listed below.

1. BOPLA Film
2. PLA+PBAT Film
3. Kraft Paper
4. Metallized Paper
5. Cellulose Film
6. Metallized Cellulose Paper
7. PBS Film
8. PVDC Coated Cellulose Film
9. Metallized BOPLA Membrane

We are now achieving multilayer compostable foil materials based on extrusion coating lamination, solvent-free lamination and dry lamination, and then convert into various types of flexible pouches against customers’ requirements.

Some of the common compostable foil structures are listed below.

• Kraft Paper/PLA+PBAT Membrane
• Kraft Paper/BOPLA Membrane
• Cellulose/PLA+PBAT Membrane
• Kraft Paper/PBS Foil Membrane
• Metallized Paper/PLA+PBAT Membrane
• BOPLA/PLA+PBAT Membrane
• Cellulose/Metallized Cellulose/PLA+PBAT Membrane
• Kraft Paper/Metallized Cellulose/PLA+PBAT Membrane
• Cellulose/Metallized Paper/PLA+PBAT Membrane
• Kraft Paper/Cellulose/PLA+PBAT Membrane
• Kraft Paper/Cellulose/PBS Membrane
• Metallized Paper/Cellulose/PLA+PBAT Membrane

Here, we are going to introduce the main performance of these compostable materials pouches.

a. Compostable

All the film materials we adapt are certificated compostable, under home or industrial conditions, complying with the standards EN 13432 or ASTM 6400.

 

 

 

 

 

 

 

 

 

 

The films will present different biodegradation behaviors under different conditions, such as industrial composting facilities, home and garden conditions, and nature soil conditions.

In most cases, industrial composting will be able to achieve a faster biodegradation of the compostable film materials than other composting progress, as it is able to provide better conditions.

Some manufacturers would like to have a better biodegradation behaviors of their own compostable packages under nature soil conditions, as in most cases, the abandoned package may not be recycled into human composting facilities.

You may read here to have a better understanding of the break-down progress of our compostable foil laminated materials under the nature condition in Qingdao, Shandong, North China conditions.

The biodegrading process of compostable film materials buried in nature soil

b. High-barrier performance pouches

Through vacuum metallization, PVDC coating, and AlOx/SiOx depositing, the compostable films can be achieved with better barrier performance, such as water vapor transmission rate (short as WVTR) and Oxygen Transmission Rate (short as OTR). Later on, we will combine several layers of the barrier film and convert into laminate foil, with an improved barrier property for finished packages.odles, or soup products

In below table, we are going to share some barrier data of the most common foil laminates tested on our Mocon permeation tester.

Biodegradable Foil Laminate	WVTR (g/m2/24hr)	OTR (cc/m2/24hr)
BOPLA40/PLA+PBAT60	62.2	267
Cellulose30/PLA+PBAT60	131.5	5.6
Kraft Paper45g /PLA+PBAT60	44	742
Kraft Paper45g/BOPLA40	41	380
Metallized Paper69g/PLA+PBAT40	27	127
Cellulose30/Metallized Cellulose20/PLA+PBAT60	23	0.16
Cellulose30/Metallized Cellulose20/BOPLA40	25	0.12
Metallized Paper 69g/Cellulose30/PLA+PBAT60	5.6	1.12
Kraft45g/Metallized Cellulose20/PLA+PBAT60	26	0.22
Cellulose30/Kraft45g/PLA+PBAT60	19	117.2
Cellulose30/Metallized Paper69g/PLA+PBAT60	8.9	1.1

c. Alkaline Resistant

We put a certain amount of bleaching powder into the compostable pouches with various foil structures, and place them in an environment of 40~45 Celsius degree, to accelerate the aging process of the compostable pouches.

The test result proves the compostable pouches will be fine for packing alkaline products, like household detergent powder, and hand wash cubes.

However, it is not ok for household liquid detergent and other liquid cleaning chemicals.

You may watch the video below for further knowledge on it.

d. Frozen Treatment

Our compostable doypack is designed to withstand microwave heating, making it ideal for applications such as melting candle wax and other heat-treatment uses.

Please note:
For microwave safety, the pouch must be made without any metalized film layer to ensure proper performance and avoid potential hazards.

This innovative solution combines eco-friendly materials with practical functionality, offering both sustainability and convenience for modern consumers.

d. Vacuum Packages

The compostable pouches can be intended for the vacuum packages for products, like milk powder, nutrition products, etc.

f. Hot Filling up to 100 Celsius Degree

The compostable pouch will be fine for the hot filling process, which may work well for juice products.

Watch the video below to learn our test.

g. Microwave Oven Treatment

Our compostable doypack is designed to withstand microwave heating, making it ideal for applications such as melting candle wax and other heat-treatment uses.

Please note:
For microwave safety, the pouch must be made without any metalized film layer to ensure proper performance and avoid potential hazards.

This innovative solution combines eco-friendly materials with practical functionality, offering both sustainability and convenience for modern consumers.

You may read here for better understanding on the compostable plant-based film materials packaging.

Compostable Plant-film Materials Pouch Packaging

9.2 Mono Materials Recyclable Pouch Packages

Mono-material pouch packages are genuinely recyclable, as they can be easily processed into plastic granules for reuse in various applications. In contrast, traditional multilayer laminates—such as PET/LDPE—pose significant recycling challenges. PET and LDPE are fundamentally different materials with distinct melting points, making them difficult to process together. This limitation has driven the rise of mono-material pouches in the packaging industry, earning them high recognition and trust in the consumer market.

Currently, mono-material pouches are primarily categorized into polyethylene-based and polypropylene-based channels. Among these, polyethylene-based pouches are particularly popular due to their versatility and high performance. They can be manufactured into a wide range of stand-up pouch formats, offering both excellent functionality and recyclability, making them a preferred choice for sustainable packaging solutions.

Here we list the film materials that can be well intended for mono-materials recyclable pouch packages.

1. MDOPE Film
2. BOPE Film
3. APE Film
4. LDPE Film
5. LLDPE Film
6. CPE Film
7. ABOPP Film
8. CPP Film
9. VMCPP Film
10. VMBOPP Film
11. EVOH-LDPE Film
12. HDPE Film

Various foil laminates can be achieved based on the above film materials with different properties, which are intended to meet the particular requirements for specific products. Some of the common mono-material foil laminates are listed below.

1. MDOPE/APE
2. MDOPE/LDPE
3. MDOPE/EVOH-LDPE
4. MDOPE/HDPE/APE
5. MDOPE/BOPE/APE
6. BOPE/APE
7. BOPP/CPP
8. BOPP/VMCPP
9. ABOPP/VMCPP

From our experience, mono-materials pouches can be well intended for spices powder products.

You may have a further understanding of the recyclable mono materials and pouches here, and just reach us if you have any questions

Fully Recyclable Mono Materials Package

10 Reliable filling machinery to fill products into this flat-bottom pet pouch

Our coffee bags are engineered to perform flawlessly on high-speed filling lines, helping roasters boost production efficiency and consistency.

To ensure optimal results, choosing a reliable filling machine is just as important as choosing the right packaging.

We’re pleased to recommend a trusted filling line solution designed specifically for flat-bottom coffee bags, offering precise, efficient, and mess-free filling every time.

Experience smoother, faster, and more efficient packaging , from bag to cup.

 

11 About the manufacturer

Qingdao Tongli Packaging has been dedicated to producing high-quality coffee bags for over a decade, serving long-term clients across the globe. With our extensive experience and commitment to excellence, you can count on us for a sustainable and reliable supply of coffee packaging solutions.