BS 5131-1.2:1991

This standard BS 5131-1.2:1991 Methods of test for footwear and footwear materials. Adhesives is classified in these ICS categories:

• 83.180 Adhesives
• 61.060 Footwear

This Section of BS 5131 describes a method for measuring the strength, in terms of resistance to peeling, of a bond between two sheet materials that have been bonded together. The method is applicable to a great variety of combinations of upper materials, soling materials and adhesives, where at least one of the adherends is flexible.

NOTE 1 The purpose of the method is to test joints rather than to compare adhesives. As a consequence, unlike BS 5131-1.1, no recommendations are given concerning appropriate adherends. In BS 5131-1.1 the two adherends are subjected to a constant separating force, and therefore in principle the test specimen may remain intact. In this Section, the two adherends are pulled apart at a constant rate; the test specimen will inevitably fail, and it is the forces required to cause the test specimen to fail and the nature of the failure that are under investigation. This test is more destructive in its philosophy than the test described in BS 5131-1.1. In BS 5131-1.1 the failures (e.g. cohesive failure of the adhesive layer, or failure of adhesion to one adherend) are associated with the adhesive. In this Section, however, alternative types of failure which may take place within the adherend are described.

NOTE 2 For the peel bond strength of specimens cut from made-up footwear see BS 5131-5.4.

NOTE 3 The titles of the publications referred to in this standard are listed on the inside back cover.

Method for measuring the resistance of an adhesive joint when subjected to peeling at a constant rate of separation.