For manufacturers, flexible packaging decisions are about far more than choosing a film. Material selection directly affects product protection, line performance, and how a brand shows on the shelf. The right combination of polymers, sealants, and structures can extend shelf life, improve run efficiency, and deliver the high-quality graphics today’s consumers expect.
Kendall Packaging offers a broad portfolio of flexible packaging materials and formats designed to meet these demands. From single-ply films to high-barrier laminations and stand-up pouches, each option plays a role in balancing performance and presentation.
Polymer Choices: Building Performance from the Ground Up
Every flexible packaging structure starts with polymer selection. Each material brings unique advantages that can be leveraged individually or combined through lamination.
- OPP (Oriented Polypropylene) is valued for its clarity, stiffness, and printability. It provides an excellent surface for high-quality graphics and is often used as a printable outer web in laminated structures.
- PET (Polyethylene Terephthalate) offers strength, dimensional stability, and high gloss. Enhancing durability, PET supports sharp, vibrant printing, making it well-suited for premium packaging and barrier applications.
- Nylon (Polyamide) adds toughness, puncture resistance, and improved gas barrier properties. It is often incorporated into multilayer structures for products requiring added protection during distribution.
- PVDC (Polyvinylidene Chloride) coatings provide exceptional moisture, oxygen, and aroma barrier performance. When integrated into flexible structures, PVDC helps protect sensitive products and extend shelf life.
Barrier Films: Protecting Freshness and Shelf Life
Barrier performance is critical for many food and consumer products. Oxygen, moisture, light, and aroma transmission can quickly degrade quality if not properly controlled. Kendall’s barrier film offerings allow manufacturers to tailor protection levels based on product sensitivity and shelf-life targets.
High-barrier structures often combine PET, nylon, or PVDC coatings within laminated constructions to achieve the necessary performance without sacrificing appearance or run efficiency. Metallized films can also be used to enhance barrier properties while adding visual impact.
The key is matching barrier capability to real product needs, avoiding under-protection that risks spoilage, or over-engineering that adds unnecessary cost and complexity.
Standard and Barrier Sealants: Where Packaging Succeeds or Fails
Sealants are a critical but often overlooked component of flexible packaging. They determine how reliably a package closes, how it performs on the line, and how it holds up through distribution.
- Standard sealants are designed for a wide range of applications, delivering dependable seals for many dry and ambient products.
- Barrier sealants are engineered for laminated structures and higher-performance applications where hermetic integrity is essential.
Proper sealant selection supports consistent seal strength, reduces scrap, and helps maintain package integrity throughout the supply chain.
Single-ply Films and Laminated Structures
Not every product requires a complex laminate. Single-ply films can provide cost-effective solutions for applications with moderate barrier needs and shorter shelf lives. These structures simplify material use while maintaining reliable performance.
For more demanding applications, laminated films combine multiple layers to harness the strengths of different polymers. A typical laminate may include a high-clarity printable outer layer, a barrier layer for protection, and a sealant layer optimized for line conditions. This approach allows manufacturers to fine-tune performance while achieving excellent shelf appeal.
Flexible Formats that Enhance Functionality and Presentation
Material selection works hand-in-hand with format choice. Kendall supports a range of flexible packaging formats designed to improve both functionality and shelf presence.
- Stand-up pouches offer strong shelf visibility, efficient filling, and excellent branding real estate. They can be engineered with high-barrier laminations and optional resealable features to support multi-serve products.
- Three-ply laminations deliver enhanced protection for products requiring multiple layers of performance, combining strength, barrier, and seal ability.
- Cold seal films enable package sealing without heat, making them ideal for heat-sensitive products or high-speed applications where traditional heat sealing is not preferred.
These formats also support advanced printing techniques, allowing brands to achieve bold graphics, clean registration, and premium finishes.
In many categories, packaging is the first interaction a consumer has with a product. High-quality graphics help communicate value, differentiate on the shelf, and reinforce brand identity.
Films such as OPP and PET provide smooth, stable surfaces that support high-definition printing. When combined with laminated structures, they protect graphics from scuffing and damage while maintaining clarity throughout distribution.
The Kendall Packaging Advantage
Choosing flexible packaging materials is a balancing act between protection, efficiency, and appearance. We work with manufacturers to align material selection, barrier performance, and format design with real-world production and distribution needs.
From OPP, PET, nylon, and PVDC to sealants, laminations, stand-up pouches, and cold seal options, we offer the flexibility to build packaging solutions that perform inside the package and stand out on the shelf.
For more information about Kendall Packaging’s flexible packaging solutions, email info@kendallpkg.com.