Snack Packaging that Locks in Crispness
DuPont packaging materials keep snacks, cereals, and other dry foods crisp and flavorful, and help production run faster.
With a wide variety of materials and resin combinations, DuPont helps brand owners and packaging converters tailor solutions to meet any dry food or snack packaging need.
From keeping chips and cereals crisp and crunchy, to making sure cookies and confections come out of the package sweet and delicious, you can taste the difference DuPont delivers. You can see it on the shelf, and in on the production line in enhanced speed and efficiency.
One Size Does Not Fit All
DuPont packaging specialists and material science experts work with customers to develop innovative dry food and snack packaging ideas. The result can be packaging that sets products apart, to increase shelf appeal, keep snacks and sweets fresh and tasty longer, and make them easier to open and enjoy.
- Superior moisture vapor barrier
- Quality sealing through dust and powders even at high line speeds and over a range of sealing temperatures
- Resistance to punctures and abrasion for problem-free shipping and distribution
- A variety of applications including easy-open bags, pouches, and lidding
Range of Durability Options
DuPont resin combinations and experienced product development support enable brand owners and converters to tailor the hardness, stiffness, or flexibility characteristics of packaging for better food presentation and protection against damage.
High Hot Tack Strength
DuPont packaging resins, including Surlyn®, are scientifically engineered to provide increased hot tack strength for sealing and superior performance under a broader range of sealing temperatures. This helps maintain higher packaging line speeds and reduces the number of seal failures for greater moisture vapor control.
Excellent Foil Adhesion
Surlyn®, Nucrel®, and Appeel® provide a strong, consistent seal to aluminum packaging, forming an excellent moisture barrier for a variety of snack and dry food applications.
Controlled Opening and Unrivalled Seal-Through
Surlyn® can be modified to control its opening force and provide a more consistent peel compared to other resins. Its opening force can be controlled by varying the thickness of the Surlyn® layer, while continuation peel force can be controlled by mixing different grades of Surlyn® resin. This allows Surlyn® to deliver:
- Excellent tear propagation properties for directional tear
- Excellent peelability for easy opening
- Stable peel performance over time
- Reduced potential for seals to open during shipping and handling due to its high-performance seal characteristics
- Seal through powder contamination, maximum hot tack, low Seal Initiation Temperature (SIT), and the broadest range of operating temperatures
Stand-Up Pouches for Cereal, Rice, Biscuits, and Cookies
For stand-up pouches, DuPont™ Surlyn® Burst Peel technology provides easy, no-spill openings, and, in some cases, re-closing features. It is based on a co-extruded film of HDPE combined with a thin sealant layer of Surlyn®. This differs from other easy-open technologies, which are typically based on blends of incompatible resins.
As with other DuPont snack packaging solutions, it offers excellent seal-through contamination, higher packaging line speed, and reduced leakers during transport. And it increases shelf appeal by making pouches stand up straight.
Surlyn® Burst Peel technology can be used in blown-film or cast-film processes. It can be used in laminates with other substrates such as Mylar® OPET films or OPP, or in coextrusions with PA, EVOH, or other barrier resins. It can also be applied by extrusion coating onto paper, aluminum, or metalized films.
Powdered Food Protection
For dehydrated foods, such as coffee, soups, soluble drinks, bakery mixes, and sauces, using Surlyn® in aluminum-based pouches provides:
- Superior seal integrity, sealing through powder, gussets, and folds
- Higher line speeds due to excellent machinability, stiffness, and low seal initiation temperature
- Excellent protection against moisture and oxygen
- Fewer taste and flavor issues due to the minimization or elimination of primers
- Easy-tear opening
Cost Savings and Downgauging Potential
Only Surlyn® is able to combine stiffness and sealability at low temperatures. The direct adhesion of Surlyn® to aluminum, as well as its superior barrier performance with relation to oil, results in a greater resistance to delamination without the use of solvent-based primers or glues. Cereals and snacks packed in stand-up pouches eliminate the extra cost of the box. These combined benefits can lead to snack packaging material cost reduction. Surlyn® can also offer substantial downgauging potential, due to its toughness, which reduces puncture rates during handling and transportation, and its stiffness, which reduces overall thickness while still allowing for good machinability.
DUPONT PRODUCTS & SERVICES
DuPont™ Surlyn® sealant resin provides excellent clarity, hot tack, heat seal, and toughness for packaging a variety of foods, as well as pharmaceuticals, household cleaners, and personal care products.
DuPont™ Elvaloy® for polymer modification is used to improve toughness in CPET and APET trays for frozen and refrigerated ready-to-eat meals, as a PVC plasticizer and as a compatibilizer in PET/HDPE recycling.
DuPont™ Elvax® packaging resins provide toughness, flexibility, and clarity for snack, cheese, cereal, meat, poultry, and liquid packaging, as well as for some medical applications.
DuPont™ Surlyn® for thermoforming film provides excellent clarity and formability, making it a cost-effective solution for sterilized medical device packaging.
DuPont™ Nucrel® resin acts as a foil adhesive and heat sealant for beverage packaging, condiment and spice oil sachets, as well as non-food products including toothpaste tubes and cable shielding.
DuPont™ Nucrel® AE for LDPE extrusion coating improves foil adhesion when used as an LDPE modifier in pouches and sachets for food oils, snacks, and non-food products.
DuPont™ Surlyn® blow molding resins provide high gloss, scratch resistance, pleasant touch, and squeezability to cosmetic bottles and transparent tottles for lip gloss.
DuPont™ Surlyn® extrusion resin provides toughness, durability, and abrasion and chemical resistance for demanding applications, including shock tubes for mining and construction to snowshoes and wake/bodyboards.
The DuPont™ Elvax® Industrial EVA resin portfolio consists of a range of ethylene vinyl acetate polymers that are used in a vast array of industrial applications.
DuPont™ Nucrel® acid copolymer resin is used in metalized building panels, water piping, cable shield and other industrial applications.
DuPont™ Elvaloy® RET reactive elastomeric terpolymers are used for polymer modified asphalt to help build roads that last longer or take higher loads without rutting.
An Italian packaging converter uses DuPont™ Appeel® for a reliable, easy-to-peel, tamper-evident packaging solution for ice cream.
French ceramic container maker Poteries Malicornaises uses DuPont™ Nucrel® in ceramic packaging to successfully seal and protect ready-to-eat meals.
European packaging converter WipakGryspeert uses DuPont™ Bynel® in foam trays for a more efficient, flexible, and fresher packaging solution for meat, seafood and ready-to-eat meals.
INFORMATION & IDEAS
DuPont has a proven history of driving practical, scalable solutions for sustainable packaging based on full life cycle assessment and business-driven collaboration with customers worldwide.
DuPont™ Surlyn® delivers the strength, stiffness, and extrudability film converters require for packaging downgauging and to optimize use of petroleum-based materials.
DuPont innovations help manufacturers and designers create cost-effective, environmentally friendly packaging solutions.
DuPont works with converters and brand owners to develop energy saving packaging solutions, from making production and shipping more efficient to reducing power costs.
DuPont collaborates with customers on efficient packaging that protects products by developing optimal packaging that maximizes effectiveness and environmental efficiency.
To meet growing demand for high-performance specialty resins used in packaging, footwear, electronics, and more, DuPont has a joint venture for EVA plastic production in China.