As a trust-worthy flexible converter, we would love to share with you a fantastic poly sachet intended for 180 grams of cassava starch. This polybag largely helps our customer build their powerful branding, and indeed it increased product sales by 20% in the Chinese market in 2023. We make the best use of the packaging film materials with human food certificated in the market, and finish this gorgeous package.
In this article, we will analyze the exact foil material of this 280g fried snack standing bag. and hope it helps the customers.
Packaging Foil Materials
The figure below shows the composition structure of this laminated foil material used to convert this fried snack pillow pouch. It’s made of triplex layers for BOPP/VMPET/LDPE material film.
- BOPP film, works on the outside layer as a print substrate.
- VMPET film, works as the main blocking layer.
- LDPE film, works as the inner sealing layer.
BOPP Film
BOPP is Biaxially Oriented Polypropylene.
It is a commonly used plastic film. During the production process, the raw polypropylene material undergoes biaxial stretching treatment, which causes the molecular chains to be oriented in both the longitudinal and transverse directions. This treatment endows BOPP film with good tensile strength. It is relatively tough and not easy to be torn.
The BOPP film has high transparency and good gloss, presenting a shiny appearance. Moreover, it has certain barrier properties against water vapor and oxygen and can protect products to some extent. It also has good antistatic performance and is widely used in the packaging industry, such as being frequently used for packaging food, daily necessities and so on.
VMPET Film
VMPET film is short for vacuum metalized polyester film, which is achieved under vacuum conditions to deposit a thin layer of aluminum atoms onto the surface of a PET (polyester) film substrate. And finally, realize a bright metallic film that is widely used in flexible packaging and standup pouch packages.
VMPET film has better sunlight shield properties. VMPET film is the best solution for these product’s packaging. Also, VMPET film is so widely used in standup pouch packages that it has a high barrier property at quite lower costs than aluminum foil.
LDPE Film
LDPE means low-density polyethylene film, which is the most commonly used inner sealing film for multi-layer flexible packaging in various applications. It can provide enough sealing strength and airtight properties for the final packages.
- LDPE is lightweight, easy to fabricate, and has good chemical and impact resistance.
- LDPE is recyclable and reusable, making it a popular alternative to traditional plastic.
- LDPE is nontoxic, non-contaminating, and has a high degree of break resistance.
Thickness
As you can see from the below picture, the overall thickness of this pillow pouch is 0.122 mm, which equals 122 microns for this laminated foil.
So, how does this foil structure perform when it is intended for fried snacks? Will it break during the transit?
Nitrogen Flushing Protection
Through the below picture, you may learn the potato chips pillow pouch effect when 280 grams of fried snacks are filled into a pillow pouch based on this laminated foil BOPP/VMPET/LDPE.
Mechanical Property
The pillow pouch package will protect the potato chip product during filling, transit, and distribution. Under the emergency circumstances of unexpected shock in delivery or packages falling off the goods shelf, the nitrogen-flushed pouch can better protect the product from damage.
This reinforced laminated foil is achieved with great mechanical strength, with some standard items as below.
- Tensile Strength
- Sealing Strength
- Anti-puncture Strength
- Burst Impact Strength
- Anti-pressure Property
We put the mechanical properties of this 280-gram fried snacks pillow pouch our top priority in our manufacturing plant. Serious measures are taken in our QC system, to assure each order is finalized with the expected result.
Drop Test Video #
Barrier Performance
The above tests are performed against each order, on customer requirements, and you may check the exact values of this foil material in the Technical Date Sheet part of this post.
With the mocon O2/H2O/CO2 permeation tester equipped in our laboratory, we are able to keep a closer eye on the barrier performance of each laminate foil produced in our manufacturing plant.
Through the below table, you can easily find out the typical values of moisture vapor transmission rate and oxygen transmission rate of common substrate film materials.
To ensure great protection of the fried snacks from oxygen, and moisture, usually, a layer of metalized polyester film or aluminum foil sheet is applied in the foil structure, with some common foil structures as below.
- VMPET/LDPE
- BOPP/VMPET/LDPE
- MatteBOPP/VMPET/LDPE
This foil material proves to be working well for dry nuts and snack products distributed around the country.
Technical Data Sheet of 280 grams fried snacks standing bag
Here, we attach the specification sheet of this 280 grams fried snacks sachet based on BOPP/VMPET/LDPE.
More tests are included in this specification sheet with items available listed below.
- Yield (grams per square meter)
- Tensile Strength (Mpa)
- Elongation Rate (%)
- Coefficient of friction, short as COF
- Solvents Left (mg/m2 )
- Sealing Strength (N/15mm)
- Sealing Conditions
- Bond Strength (N/15mm)
- Burst Strength (J)
- Anti-Puncture ability (N)
- Drop Test Ability (cm)
- Anti-pressure ability (kgs)
- Water Vapor Transmission Rate (g/m2/24hr)
- Oxygen Transmission Rate (cc/m2/24hr)
More Sustainable Materials Options
In recent years, along with the increasing burden of fossil-chemical polymer materials discarded into our environment, there has been an increasing focus on using more sustainable materials. there is an unprecedented demand for sustainable packages which leads to a more eco-friendly activity of the business. Upon the recent investigation of the snacks market, more and more consumers are more likely to purchase a product that acts toward environmental sustainability.
Compostable Packaging Materials
For example, Kraft Paper is already a relatively sustainable option as it is made from renewable wood pulp. In addition,the compostable packages are based on plant-based fibers like cellulose, or bio-mass like corn starch, cassava, or sugarcane. The resins derived from these resources are usually named bio-polymer, which can break down into inorganic elements under the functions of algae, bacteria, and other microorganisms.
Fully Recyclable Mono Materials
Compared with the high cost of compostable foil materials, fully recyclable materials sachets, and rolls are flooding the market for lightweight product packages in the market at much lower prices. Mono materials packages mean each layer of the multi-layer foil is made of the same resin, which can be easily processed in the human recycling system and reused for other applications. This recyclable materials sachet largely reduces the rate of plastic polymer film packages ending in landfills.
Nowadays, we have developed some standup pouches based on single resin film materials, that can be found in good application for fried snacks products.
