Adhesives are classified by shape including:

1. Aqueous solution: polyvinyl alcohol, cellulose, urea-formaldehyde resin, phenolic resin, sodium silicate.

2, solution: nitrocellulose. Acetate fiber, polyacetate, chloroprene rubber, nitrile rubber.

3, emulsion (latex): polyvinyl acetate, polyacrylate, natural latex, polybutyl latex, nitrile latex.

4. Solvent-free type: ring-borne resin, acrylic polyester, polycyanoacrylate.

5, solid type: powder-starch. Casein. Polyvinyl alcohol, copper oxide; tablets, block-fish gelatin. Rosin. Hot melt adhesive. Shellac; fine rope-like epoxy glue stick, hot melt adhesive; Film - phenolic / polyvinyl acetal. Phenolic nitrile rubber, epoxy - nitrile rubber. Epoxy - nitrile rubber, epoxy - polyamide.

6, ribbon: adhesive type, heat-sealed type.

7, cream and putty