fr fibers is secured to one side of the adhesive 12 the adhesive may be applied to the batt 10 or more preferably the adhesive is in the form of double sided tape where one side is applied to the batt 10 the opposite side of the adhesive binds the tape to two edge butted or overlapped pieces 20 22 of fire retardant material the adhesive side of the tape may have a protective release sheet 14 a throw away strip of film or paper for example that keeps the adhesive from sticking to everything before it is employed in the mattress construction to provide the fr binder tape with more rigidity it may be desirable to employ a carrier film as illustrated in fig3 during its construction an fr nonwoven batt or substrate 10 is applied to an adhesive 12 as explained with respect to fig1 to the other side of the adhesive a carrier film 16 is applied and a second adhesive 12 preferable another strip of double sided tape is secured to the other side of the carrier film such that the carrier film 16 has an adhesive 12 12 secured to both sides to the second adhesive may be applied a release sheet 14 to keep the tape from adhering to anything before it is used to secure the two.