Blog
At LD Davis, we pride ourselves on being an educational resource for our customers, our prospects and the community. Our blog is a helpful learning tool for those wanting to know more about glue best practices, news in the industry and simple answers to common glue questions. Hear it straight from the experts in every post.

Most Popular Posts

Cheaper Book Binding Glue Could Be Costing You More

I will start off by saying this: all book binding glues are not created equal.

In our 90 years in business, we have worked with hundreds of book binding companies. 

Like many of our customers, we're always working to get competitive pricing on our raw materials. It's only natural to shop around for the best pricing possible. But one thing we have noticed is that some book binders are making the switch to different glue vendors because, on the surface, the price per pound for their glue is less expensive.

In the end, it turns out that's really not the case.  Here's a little story for you...

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Lab Testing of Glue Raw Materials: Jelly Strength Tests

Our protein glue products are based on gelatin protein which is derived from the hydrolysis of collagen. Collagen is a protein ingredient of animal hide, tissue and bone. We source our gelatin in the form of soft gel netting which is recycled from pharmaceutical companies.

Protein glue is composed of polyamides of alpha-amino acids. The solubility of protein glues in water is due in large part to the fact that five of the major constituent amino acids present in glue possess high water solubility. Protein glues are insoluble in oils, waxes, organic solvents and absolute alcohol. They may be emulsified in water-oil or oil-water systems.

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Lab Testing Of Glue Raw Materials: Viscosity Tests

 Gelatin is an extremely important part of our protein glues. Since the 1970s, we have replaced the primary ingredient, extracted collagen from hides of bovine and porcine, with recycled pharmaceutical and nutritional gelatin in the form of soft gel netting.

Some tests that we perform on incoming gelatin shipments include: dirt tests, viscosity tests, gram “jelly” strength tests, sulfur tests, solids tests, and bleachability tests. Any customer specific testing is performed on all protein glues as well.

Today we will dive into viscosity tests.

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The Pros and Cons of Protein Glue (Hide Glue) in Packaging

Considering making the switch to protein glue (hide glue)? This list of pros and cons will help you determine if it is the right packaging glue for you. 

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