06 05 23.02_e - MASTERFORMAT Issued Preface 06 05 23.02...

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Preface MASTERFORMAT: 06 05 23.02 Issued: 2009-01-20 Wood Adhesives Scope These Evaluation Listings apply to all wood adhesives. The prescriptive standards cover adhesives made from animal glues, starch glues, casein glues, polyvinyl adhesives, urea resin adhesives, phenol and phenol-resorcinol resin adhesives (high-temperature curing), resorcinol and phenol-resorcinol resin adhesives (room- and intermediate-temperature curing) and polyvinyl adhesives (cross-linking). The performance-based standard covers “exterior exposure” and “limited moisture exposure” adhesives. The proponent has demonstrated that the product meets at least one of the following standards: CSA O112.1-M1977, “Animal Glues for Wood;” CSA O112.2-M1977, “Starch Glues for Wood;” CSA O112.3-M1977, “Casein Glues for Wood;” CSA O112.4-M1977, “Polyvinyl Adhesives for Wood;” CSA O112.5-M1977, “Urea Resin Adhesives for Wood (Room- and High-Temperature Curing);” CSA O112.6-M1977, “Phenol and Phenol-Resorcinol Resin Adhesives for Wood (High-Temperature Curing);” CSA O112.7-M1977, “Resorcinol and Phenol-Resorcinol Resin Adhesives for Wood (Room- and Intermediate-Temperature Curing);” CSA O112.8-M1977, “Polyvinyl Adhesives - Cross Linking, for Wood;” CSA O112.9-M2004, “Adhesives for Structural Wood Products (Exterior Exposure);” or CSA O112.10-08, “Evaluation of Adhesives for Structural Wood Products (Limited Moisture Exposure).” The standards outline the intended use and categorize the product by type as follows: CSA O112.1, “Animal Glues for Wood” Animal glues for wood shall be used only for the bonding of wood for general woodworking applications, such as veneering, assembly gluing, edge gluing and other similar applications. The glues are classified by type according to their state: Type I - dry form (shall be furnished in granular form); Type II - liquid form; or Type III - jelly form. 1 of 10
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Type I and Type III glues are graded as follows: Glue Grades Type I Type III Recommended Uses 85 110 135 85 110 135 veneering 165 165 veneering and assembly gluing 190 220 250 280 315 350 380 190 220 250 280 315 350 380 assembly gluing, edge gluing, laminating Type II glue shall be furnished as Grade A-1 only. CSA O112.2, “Starch Glues for Wood” Starch glues shall be used only for veneering and general wood bonding where moisture resistance of the glue bonds is not a requirement. They are classified by type according to their state: Type I - dry powder form: (i) processed starch materials, (ii) natural starch materials; or Type II - liquid form. CSA O112.3, “Casein Glues for Wood” Casein glues shall be used for the bonding of wood or for the bonding of either wood or some non-wood materials to wood. The glues are classified by type according to their intended use: Type I - for use where a bond with resistance to moisture and to micro-organisms is required; Type II - for use where a bond with resistance to moisture only is required; or Type III - for use where low staining characteristics are required, and where moisture resistance is not a requirement.
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