Therapeutic warming bag, an apparatus for its manufacture, and method for manufacturing a needle punched fabric of the bag

An apparatus for manufacturing a punched fabric for use in a therapeutic warming bag which comprises:

• a supply coil for supplying a film coated fabric,
• a punching body member for punching said film coated fabric to form a plurality of needle apertures disposed in the film coated fabric, said punching body member including:
• a driving wheel driven by a motor,
• a driving shaft extending to a shaft of said driving wheel, said driving shaft having a pair of first and second cranks,
• a first connecting rod rotatably connected to said first crank at the one end, and connected to a needle punch at the other end thereof, said needle punch having a plurality of needles for forming said needle apertures,
• a second connecting rod rotatably connected to said second crank at the one end, and adjustably connected to a clutch rod at the other end thereof through adjusting means for controlling the number of needle apertures in the coated fabric, said clutch rod intermittently rotatably connected to a driving roller shaft through a ratchet and a stopper,
• a driving roller having said driving roller shaft for advancing the punched fabric, and
• a press roller having an operating switch for being operatively associated with said driving roller to effectively advance the punched fabric, and
• a winding drum for winding the punched fabric, whereby the needle punch punches while the driving roller is stopped, the apparatus forms the needle apertures in the coated fabric as desired.