Search
Use the search bar or filters below to find any TAPPI product or publication.
Filters
Content Type
Publications
Level of Knowledge
Committees
Collections
Journal articles
Improved methods for packaging copy paper with hot melts, TAPPI JOURNAL, November 1993, Vol. 76(11)
Improved methods for packaging copy paper with hot melts, TAPPI JOURNAL, November 1993, Vol. 76(11)
Journal articles
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.
Journal articles
The Effects of Corona and Flame Treatment
The Effects of Corona and Flame Treatment
Journal articles
Electron Beam Curable Gas and Aroma Barrier Technology, 2006 PLACE Conference
Electron Beam Curable Gas and Aroma Barrier Technology, 2006 PLACE Conference
Journal articles
Contact mechanics and the science of pressure sensitive adhesion, "the PLACE", September 2002 (224KB)
Contact mechanics and the science of pressure sensitive adhesion, "the PLACE", September 2002 (224KB)
Journal articles
A new enhanced polyethylene for extrusion coating and laminating, "the PLACE", August 2003 (355KB)
A new enhanced polyethylene for extrusion coating and laminating, "the PLACE", August 2003 (355KB)
Journal articles
An introduction to polymeric colorants, the PLACE, March 2003 (335KB)
An introduction to polymeric colorants, the PLACE, March 2003 (335KB)
Journal articles
Synthetic paper from plastics, "the PLACE", October 2000
Synthetic paper from plastics, "the PLACE", October 2000
Journal articles
Electron beam curing in flexible packaging, "the PLACE", September 2001
Electron beam curing in flexible packaging, "the PLACE", September 2001
Journal articles
How to achieve high bond strength and low oxygen transmission rates with a chemical primer,, "the PLACE", May 2004 (331KB)
How to achieve high bond strength and low oxygen transmission rates with a chemical primer,, "the PLACE", May 2004 (331KB)