'TACKY MATS' OF VARIOUS DIMENSIONS. EACH MAT CONSISTS OF 30 DISPOSABLE LAYERS/ SHEETS OF POLYETHYLENE, EACH SHEET HAVING AN ADHESIVE COATING ON BOTH SIDES. THE MAT IS STUCK TO THE FLOOR BY MEANS OF THREE ADHESIVE STRIPS. IT IS PLACED AT THE ENTRANCE TO A CLEAN ROOM. THOSE ENTERING THE CLEAN ROOM STEP ON THE MAT AND ANY DIRT/CONTAMINATION ON THEIR FOOTWEAR STICKS TO THE MAT. ONCE A LAYER LOOSES ITS TACKINESS IT IS DISPOSED OF.

CLASSIFICATION IS DETERMINED BY THE PROVISIONS OF GENERAL RULES 1 AND 6 FOR THE INTERPRETATION OF THE COMBINED NOMENCLATURE; BY THE TEXT OF CN CODES 3919 AND 3919 90 61 AND HSENS TO 3919.