BS EN 12800:2000 – Footwear Ð Test methods for insoles Ð Dimensional stability

1 Scope
This European Standard specifies a method for the determination of the dimensional stability of insoles, irespective of the malerial, after immersion in water.
2. Nomative references This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to, or revisions of, any of these publications apply to this European Standard only when inoorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 12222, Footwear日Standard atmospheres for conditioning and testing of footwear and components for foowear. prEN 13400:1998, Footwear D Sampling location of components for footwear.
3 Definitions For the purposes of this standard the fllowing definitions apply,
3.1 swelling gain in thickness, expressed as a peroentage, after leaving the test piece of insole material submerged in water for 6 h 32 increase in size increase in length and in width, expressed as a peroentage, after leaving the test piece of insole material in water for 6 h
3.2 increase in size increase in length and in width, expressed as a percentage, after leaving the test piece of insole material in water for 6 hi
3.3 shrinkage reduction in length and width, expressed as a peroentage, of a test piece of insole material after leaving the test piece in an oven at 35 8C for 24 h
3.4 dimensional stability the change in the distance between two reference points on a test piece before and after specified test conditions (e.g. heat, moisture) expressed as a percentage of the initial distance
4 Apparatus and material The fllowing apparalus and malerial shall be used:
4.1 Dual micrometer gauge, standing on a fimm base and lbaded with a dead mass such that the presser foot appled a pressure of 50 kPa土5 kPa1). The gauge has a presser foot which is flat, cdiroular and 10,0 mm in diameter. The gauge has scale divisions of 0,01 mm.
4.2 Measuring device Vernier calipers or similar, capable of measuring to an accuracy of 0,1 mm. 4.3 Glass or flat bottomed container of an adequate size such that the test piece can be placed in the bottom.
4.4 Oven, for heating the test piece to 35 8C and thermostatically contolled so that the test piece is kept within 1 8C of the required temperature during the heating peniod.
4.5 isilled water
5 Sampling and conditining From the shoe insoles, cult insoles, or component as supplied into two square or rectangular test pieces of(60mmt20mm)3(60mmt20mm),oneto determine swelling and size growth and the other to determine shrinking. According to the given dimensions, cut the test piece as big as the sample will llow.
BS EN 12800:2000 – Footwear Ð Test methods for insoles Ð Dimensional stability