skin formation -- appearance of a relatively loose layer at the surface of a polymeric material. This definition is currently listed in ASTM D4499. In accordance with the practice of the Adhesives Committee, terms that are not specific to a standard are to be included in D907. Therefore, this term is being balloted to be included in D907. This term was balloted In the past year, but received 2 negatives, which were found persuasive, and 2 comments, one of which included a new proposal for the term. This proposal was discussed and modified slightly and the result is being reballoted as follows. skin formation, n -- in an adhesive, the appearance of a solid or semi-solid layer of material at the exposed surface. Discussion: Skin formation is the result of solidification through cooling, drying or chemical reaction.
Gap-filling adhesives; Hot melt adhesives; Terminology; Adhesives;
Citing ASTM Standards
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