PURPOSE: To provide a chute, which does not accumulate dust of strapping work and fragments of straps which accompany strapping operation at the chute guiding the straps of a strapping machine with reduced friction on opening and closing a guide to the utmost.

CONSTITUTION: On a steel wall 12 as a fixed frame, a plurality of chute mounting and biasing mechanism 10 is installed to support a chute 14. The mechanism 10 includes a first bracket 20, a second bracket 22, a pivot arm 24, and a spring 26. The chute 14 supports the straps in a passage consisting of flanges 18, 18a and a forked portion 16. As the chute 14 is opened to an arrow direction with the second bracket 22 against the spring 86 bias, the supported straps is released. The mechanism 10 functions with exceedingly small friction and does not accumulate dust or the like of strapping, accordingly, failures such as sticking are avoided.