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Adhesives Ingredients
The material selection platform
Adhesives Ingredients

Blood Glue for Plywood and Packaging

Adhesives Formulation

Applicable Base Polymer Properties

Blood glues are preferably made from soluble dried beef blood, a byproduct of meat packaging operation. Blood glues are used to manufacture plywood and other wood products. They have also been used in food packaging, as the bonds are odorless, nontoxic, and tasteless. A typical use was the bonding of cork disks in metal bottle caps.
Blood glues are of little commercial importance in most countries, but they are still used in certain regions for the manufacture of interior grade plywood. High-speed assembly operations can generally be achieved by heating the glue to a temperature of approximately 80°C.

Typical Formulation Ingredients

Ingredient
Parts by weight
Water at 62°C 
xxx 
Soluble dry beef blood 
xx 
Fir wood flour 
xx 
Pine oil or equivalent defoamer Mix 10 mins 
x 
Cold water 
xxx 
Pine oil or equivalent defoamer Mix 2 mins 
x 
Hydrated lime 
x 
Water at 18-22°C Mix 2 mins 
xx 
Sodium silicate solution Mix 5 mins 
xx 

Processing

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Resulting Properties

A typical animal blood composition is listed above for the hot or cold pressing of plywood. It is based on soluble blood using hot water to coagulate the protein into a granular, high water content plywood adhesive.
Blood glues have good adhesion to paper, textiles, leather, cork, and metals. Blood glue has fair thermal resistance when set with heat. These glues have quite good water resistance but are highly susceptible to mold growth and attack by bacteria under damp conditions.

Tips and Tricks

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