Stand up pouch material knowledge is a basis to better makel your packages more solid and protect your products.
When we discuss the material of Stand Up Pouches, we're not only talking about the polymers, paper or aluminium, but also about their structure in which way all the different material types are combined together. The polymers include LLDPE, BOPP, Metalized PET, Nylon, etc. Their combinations with paper or foil creat a great variety of stand up pouch
To design durable, protective packaging that meets your product’s needs, it's essential to understand the materials types and the way they are used in stand-up pouches.
The composition of stand-up pouches goes beyond just plastic polymers, paper, or aluminum—it's also about how these materials are layered and combined. Common polymers include LLDPE, BOPP, metalized PET, and nylon, etc, each offering unique properties. When combined with paper or foil, or layered with other polymers, these materials create a variety of stand-up pouches tailored for specific applications.
While this summary covers the primary materials, choosing the right structure can significantly enhance your packaging's performance. Exploring the characteristics of each material and their combinations will help you to make the best choices for your packaging solutions.
Among the flexible packaging material types, polymers or synthetic plastics are the mostly used due to their mechanical strength and barrier quality. Through certain polymerization process, many different polymers was developped to improve the film performance.
The Core Substrates: Polymers, Foil & Kraft Paper
1
LLDPE (Linear Low Density Polyethylene)
Offers good tear strength and acts as a sealant layer, commonly used for everyday pouches.
2
METPET (Metalized PET)
Provides superior barrier performance due to the aluminum coating, often appearing silver.
3
PET (Polyethylene Terephthalate)
Strong and tear resistant, offering high-quality printing capabilities.
4
BOPP (Bi-Oriented Polypropylene)
Crystal clear with excellent printability, used for packaging requiring transparency.
5
CPP (Cast Polypropylene)
Ideal for retort pouches due to its heat resistance, offering stability at high temperatures.
6
MBOPP (Matt BOPP)
Provides an excellent water barrier, ideal for products requiring extended shelf life.
7
ALU (Aluminum Foil)
Offers superior barrier against light, moisture, and oxygen, but is not transparent.
8
Kraft Paper - Natural / White Color
compostable and cheap when printed by flexo printing.
Special Purpose barrier film
White LLDPE
Elevate visual appeal with white background , enhance image clarity and vividness while reducing printing plates expenses.
BO PE (Bi-Oriented Polyethylene)
High clarity, matt or glossy, laminated with inner NW PE to make a fully recyclable PE pouch.
PLA (Polylactic Acid)
Fully compostable, often laminated with kraft paper for a 100% compostable pouch.
Hologram PET
Create visually striking effects, enhance product appeal, prevent counterfeiting, and provide an added layer of authenticity and sophistication
NW PE
Lower heat seal temperature than common LLDPE, serve as a sealant layer of Mono PE pouch.
Soft-touch PET
Excellent handle feel of velvet softness, distinghished your band apart from the ordinary.
New High Barrier and Protective Base Films
Metalized PLA
Offers improved barrier performance due to the aluminum coating.
ALOx PET
Offers outstanding barrier property against gas and moisture, with high transparency.
Coextruded EVOH PE
Provides an excellent oxygen barrier, ideal for products requiring extended shelf life.
KNYLON or KPET
PVDC coated PA or PET, higher barrier performance than normal PA or PET.
Recyclable and Sustainable Laminates
NK PLA (Polylactic Acid)
Fully compostable, often laminated with kraft paper for a 100% compostable pouch.
Mono-material PE
Mono PE pouch is fully recyclable, offering a sustainable option for stand up pouch packaging.
Compostable Kraft Paper
Biodegradable and compostable, suitable for environmentally conscious packaging.
Material Property Comparison
To clarify how they perform when used in packaging applications, Supouches has compiled the following table. This table will help you understand all the strengths and weaknesses of these materials, serving as a useful guide for your reference.
Film Types
Advantages
Disadvantages
LLDPE
High tensile strength, Good heat seal property, Good clarity, Flexibility
Poor gas barrier, Easy to melt under high temperatures
BOPP
High clear transparency, Printability, Excellent moisture vapour barrier
Poor heat sealing property, Brittle at low temperature, Poor gas barrier
CPP
Excellent heat seal property, High moisture barrier quality, High transparency, Stability under high retorting temperatures
Poor barrier against gas, aroma, oxygen, Easy to crack at low temperatures
PET
Great tensile strength, Good thermal stability, Excellent chemical resistance, Low permeability of gas, moisture, and aroma, Good transparency, Printability
Rigidity, Poor heat sealability
PA
Highly resistance to puncture, Durable tear property, Excellent barrier to oxygen, Good flexible adaptability to shapes & sizes, High melting points, Good heat sealing strength
Low barrier to moisture
EVOH
High barrier against gas, oxygen, etc., Good heat resistance
Low moisture barrier quality
PLA
Compostable & Eco-friendly, Food contact safe
Poor heat resistance, Limited barrier quality
Aluminum
Superior barrier quality against light, moisture and gas
Not transparent, Not microwavable, Expensive
Paper
Biodegradable, tear resistant
Poor barrier quality, Not transparent
LLDPE is the most widely used material in stand up pouch packaging. True
PE can be used both as the inner sealant layer in most of stand up pouches, also outer layer in recyclable PE pouches.
PET can be used as the sealant layer in stand up pouches. False
PET can't be heat sealed, but it can be used as outer layer and middle layer to help enhance barrier quality of stand up pouches.
Conclusions:
To choose suitable materials for your bags play an important role in the success of your packaging project. Additionallly, we provide more advanced materials such as recyclable plastics, higher barrier base films to provide more options. we are committed to the continuous innovation in material for flexible packaging. Stay informed about the latest material technologies and trends, contact us for more.
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