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Journal articles
Open Access
Starch-based hot melts for adhesive applications, TAPPI JOURNAL, September 1994, Vol. 77(9)

Starch-based hot melts for adhesive applications, TAPPI JOURNAL, September 1994, Vol. 77(9)

Journal articles
Open Access
The ball is in your court The CONEG Challenge and industryâ??s response

The ball is in your court The CONEG Challenge and industry’s response

Journal articles
Open Access
Measurement and control of biaxially oriented films for coating, laminating, and packaging applications, TAPPI JOURNAL, April 1993, Vol. 76(4)

Measurement and control of biaxially oriented films for coating, laminating, and packaging applications, TAPPI JOURNAL, April 1993, Vol. 76(4)

Journal articles
Open Access
The role of specific gravity for removal of hot melt adhesives in recyclable grades, TAPPI JOURNAL, September 1992, Vol. 75(9)

The role of specific gravity for removal of hot melt adhesives in recyclable grades, TAPPI JOURNAL, September 1992, Vol. 75(9)

Journal articles
Open Access
Accelerated electron-cured, hot melt pressure-sensitive adhesives provide improved plasticizer and heat resistance, TAPPI JOURNAL, February 1991, Vol. 74(2)

Accelerated electron-cured, hot melt pressure-sensitive adhesives provide improved plasticizer and heat resistance, TAPPI JOURNAL, February 1991, Vol. 74(2)

Journal articles
Open Access
The evolution of conductive coatings, TAPPI JOURNAL, December 1990, Vol. 73(12)

The evolution of conductive coatings, TAPPI JOURNAL, December 1990, Vol. 73(12)

Journal articles
Open Access
Technical Evaluation: Methods for Sealing Paper/Foil Aseptic

Technical Evaluation: Methods for Sealing Paper/Foil Aseptic Food Packages, 1996 Polymers, Laminations & Coatings Conference Proceedings

Journal articles
Open Access
Techniques for package printing and design, September 1988, TAPPI Journal 88SEP137

Techniques for package printing and design, TAPPI JOURNAL September 1988

Journal articles
Open Access
Single-Site Catalyst Produced Polyolefin Plastomers for Extrusion Coating and Laminating, TAPPI JOURNAL, January 1999, Vol. 83(5)

Single-Site Catalyst Produced Polyolefin Plastomers for Extrusion Coating and Laminating, TAPPI JOURNAL, January 1999, Vol. 83(5)

Journal articles
Open Access
Adhesion with purpose: The value of primers in sustainable flexible packaging, TAPPI Journal July 2025

ABSTRACT: Primers play a crucial role in flexible packaging by providing adhesion, enhancing performance, and improving the overall quality of packaging structures. As the packaging industry shifts towards more sustainable solutions, it brings new challenges for meeting adhesion requirements. Different types of sustainable materials, with their complicated physical and chemical properties, usually result in poor adhesion in extrusion coating or extrusion lamination, whether this is due to fast crystallization, secondary crystallization, low processing temperature, lack of functional groups, or a combination thereof. Water-based primers ensure that these innovations meet both functional and environmental standards for the packaging of tomorrow. Conventional water-based primers, including polyethyleneimine (PEI) and ethylene acrylic acid (EAA), offer significant advantages in sustainable packaging design by chemically modifying the surface of the substrate to enhance adhesion. In this study, we will discuss adhesion issues in three case studies involving sustainable packaging materials: (1) extrusion coating of polyvinyl alcohol (PVOH) on paper; (2) extrusion lamination of paper and metallized film with starch biopolymer; and (3) extrusion coating of polyhydroxyalkanoates (PHA) on paper. These cases represent three adhesion challenges related to sustainable materials, namely fast crystallization rate, low processing temperature, and secondary crystallization. A three-step adhesion improvement procedure was employed to identify the proper primer in each case study. This procedure included a wetting-out test with primer, an adhesion test, and an extrusion test with priming. In our results, strong fiber tearing or destructive bonds were achieved in each case with the help of water-based primers. These results demonstrate the value of water-based primers in enabling the transition to more sustainable packaging structures without compromising performance.

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