Matches

Animal glues continue to be used for the production of book and wooden stick matches. Efforts to replace it have been without success. The production of matches is dependent on the presence of the animal glue in the head. It not only serves as the binder for the ignition chemicals, combustible fillers, and inert materials, but also because of its air-entraining properties ensures a match head of proper density and burning characteristics.

The animal glue content of the match head is normally 10 to 12% of the dry ingredients. High-grade glues are used for book matches, and medium — to high — grade glues are used for safety and ‘‘strike anywhere’’ wood stick matches. Glues for matches require a low grease content, usually 0.3% or below, and controlled foam proper­ties. The foam creates a uniform, porous head containing oxygen to promote ignition and combustion.

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