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Home » Topics » Columns

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Ask Dr. Dave

Adhesives for Fiberglass Bonding

What are the best adhesives for bonding fiberglass components?
Dave Dunn, Ph.D.
Dave Dunn Ph.D.
July 20, 2021

Called thermoset polyesters, these materials are glass fiber-reinforced unsaturated polyesters. They are also often referred to as “sheet molding compounds” (SMCs), “fiber-reinforced plastics” (FRPs), or simply “fiberglass.”


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Ask Dr. Dave

Moisture-Sensitive Urethane Adhesives and the Pros and Cons of Epoxies

Dr. Dave tackles two questions this month, one related to package stability for moisture-sensitive urethane adhesives, and the other regarding epoxy adhesives.
Dave Dunn, Ph.D.
Dave Dunn Ph.D.
June 15, 2021

Question: My colleague and I are working on a unique challenge of trying to find a solution for manufacturing urethane-based adhesives that are quite sensitive to moisture exposure.


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EditorsBlog-Susan
From the Editor

Adhesives and Sealants Help Brands Achieve the Complete Package

Brands are exploring sustainable packaging as a means of increasing their appeal to environmentally conscious consumers.
Susan Sutton
Susan Sutton
May 21, 2021

Brands have long relied on their products’ packaging to draw the consumers’ eye and entice them to consider a purchase. But packaging has evolved beyond eye-catching graphics to encompass so much more, particularly as consumers continue to explore “green” products and services with the goal of helping to address climate change.


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Strategic Solutions

COVID-19 Impact on Global Shipping and Packaging Dynamics

The continued transition away from brick-and-mortar to ecommerce brings demand for packaging innovations that enable faster delivery and better content protection from shock or temperature variations.
Michael Rezai
May 19, 2021

The shift from brick-and-mortar to digital shopping had been under way for some time when the COVID-19 pandemic hit. Since 2017, ecommerce revenues have risen from an estimated $1.4 trillion to $2.4 trillion, or about 2.7% of global output.


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Ask Dr. Dave

Packaging Moisture-Sensitive Sealants

Can you recommend suitable materials for packaging a sealant that is sensitive to atmospheric moisture? Additionally, we can do accelerated humidity testing of filled packages, but how do we correlate these with shelf life?
Dave Dunn, Ph.D.
Dave Dunn Ph.D.
May 17, 2021

You can obviously package your moisture-sensitive sealant in glass or metal cans or tubes, which will totally prevent moisture ingress. Aluminum tubes are widely used for this type of product, as long as you have good crimps.


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Ask Dr. Dave

Superglues vs. Polyurethane Glues

Should I use superglue or one of the new polyurethane glues for general-purpose assembly and home repairs?
Dave Dunn, Ph.D.
Dave Dunn Ph.D.
April 19, 2021

I have worked with companies that manufacture superglue and polyurethane glue, both of which are single-component, no-mix adhesives. Superglue, which is the common term for cyanoacrylate adhesive, has been around for about 60 years. In contrast, the polyurethanes are about 20 years old in the retail market and somewhat older in professional woodworking. I admit to using both types of adhesive regularly.


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Strategic Solutions

Patenting Considerations for Composition Inventions in the Adhesives and Sealants Industry

Incorporating compositions into process or assembly/device claims, although restrictive, can afford some protection. But is it enough?
Sapna Blackburn
Sapna Blackburn Ph.D.
April 15, 2021

The global adhesives and sealants market grew from approximately $45 billion in 2010 to around $63 billion last year, according to The Adhesive and Sealant Council’s recently released “2020-2023 North American Market Report for Adhesives and Sealants, with a Global Overview.” During this period, over 200 patent applications (simple family groups) in the technical fields of adhesives and sealants were filed across the five major IP jurisdictions (US, EU, CN, JP, KR).


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Strategic Solutions

Switching Production to Satisfy Shifts in Demand

Production cycle planning and excess capacity can yield unexpected advantages.
AggieLotz.jpg
Aggie Lotz
michael-walton
Michael P. Walton
July 7, 2020

The specialty chemicals value chain has risen to the challenge of retooling to fill large supply gaps for sanitation products, packaging containers and inks, and other essential products to meet spikes in demand as an outgrowth of the COVID-19 pandemic.


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Ask. Dr. Dave

Can we replace welding and screws with an adhesive to assemble steel panels?

Dr. Dave discusses factors to consider when replacing traditional fasteners with adhesives.
Dave Dunn, Ph.D.
Dave Dunn Ph.D.
July 2, 2020

We assemble steel panels with welding and screws. Can we replace these with an adhesive?


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EditorsBlog-Susan
From the Editor

It’s a Sticky Situation

Beyond household projects and occasional hijinks, pressure-sensitive tape finds use in myriad industrial applications.
Susan Sutton
Susan Sutton
June 19, 2020

School closings and stay-at-home orders due to COVID-19 have forced many parents around the world to become true activities directors for their households—whether they like it or not. This can be stressful for everyone involved, but I’ve been amazed at some of the ambitious projects I’ve seen families undertake over the past few months using simple household items.


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