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Quality Control of Raw Materials


Since raw materials for adhesives influence the performance of final adhesive products, the selection, storage, handling, and testing of the raw materials are very important. In this chapter, types of raw materials including basic resins, hardeners, fillers, and functional additives for adhesives are firstly described. In addition, the roles of the materials are also shown. Practices for the quality control of the raw materials consisting of acceptance inspections and testing are also explained. Other tests conducted when adhesive products are shipped are explained too. These tests should be carried out following test standards. The standards for testing raw materials, and standards for materials are also mentioned in this chapter.


Quality control of products can be done considering only four elements called "4M." Adhesives are not an exception to that concept. 4M is the abbreviation of "Materials," "Method," "Machine," and