Hot melt applicator and nozzle used therefor

Dispensing – Motor operated outlet element

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2221462, 222518, 222559, 222309, B67D 500

Patent

active

059345217

ABSTRACT:
There is provided a hot melt applicator including (a) a nozzle opening, (b) a valve seat disposed upstream of the nozzle opening, (c) an empty chamber formed between the nozzle opening and the valve seat, (d) a valve body movable to the valve seat so that the valve seat is open or closed, and (e) a spring for biasing the valve body; and a pneumatically driven cylinder for driving the spring. The valve body is shaped to be a cone having an apex angle facing the nozzle opening, and the valve seat is formed with a tapered surface which is to make a contact with the cone. The tapered surface has an angle greater than the apex angle of the cone, and has a length of at least 1 mm. The hot melt applicator uses a pneumatically driven cylinder for driving the valve body to thereby compress the spring which in turn compresses the valve body, and thus, avoids the great resistance of hot melt with the spring used as a large capacity. By slightly changing angles of the valve body and the valve seat, the leakage which would occur when the valve is closed is prevented. By setting a length of the taper surface of the valve seat which is to make contact with the valve body to be in the range of 1 mm to 2 mm, the present invention makes it possible to prevent making of glue filament for a glue having great viscosity such as hot melt. In addition, setting a stroke of the valve body in the range of 0.3 mm to 0.5 mm ensures more effectively to prevent making of glue filament.

REFERENCES:
patent: 3420208 (1969-01-01), Guthrie
patent: 3537653 (1970-11-01), Jones
patent: 3622050 (1971-11-01), Acton et al.
patent: 4320858 (1982-03-01), Mercer et al.
patent: 4465212 (1984-08-01), Boone
patent: 4651906 (1987-03-01), Hoffmann et al.
patent: 4941614 (1990-07-01), Ilott
patent: 5277344 (1994-01-01), Jenkins
patent: 5467899 (1995-11-01), Miller
patent: 5794825 (1998-08-01), Gordon et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Hot melt applicator and nozzle used therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hot melt applicator and nozzle used therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hot melt applicator and nozzle used therefor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1111199

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.