| 摘要 |
PURPOSE:To prevent a layer part from being leaked to the outside with certainty as maintaining the extenf of heel mat welding strength, in a welding method of a heel mat for fixing this mat on a carpet. CONSTITUTION:A guide member 42 is fixed on the outer circumference of a welder bar 41 while a lower end of this guide member 42 is projected more downward than a lower end face of the welder bar 41, setting a projection 43, and at time of high frequency welding of a heel mat 20 to a carpet 10, any possible leakage of a layer part to the outside is regulated by the projection 43 of the guide member 42. |
