Apparatus for girding package with bonded synthetic-resin strip

Details Apparatus for girding package with bonded synthetic-resin strip Apparatus for girding package with bonded synthetic-resin strip

1981-06-23

1984-03-13

Sipos, John

Package making

Partial cover application

Band or tube

53373, 156502, 156515, 100 33PB, B65B 1332

Patent

active

044359454

ABSTRACT:
In an apparatus for girding packages with endless synthetic-resin strips, an assembly for bonding the ends of a web segment to one another comprises a press in the form of a fixed surface and a spring-loaded press bar shiftably mounted in a rotating truncated drum along a diameter thereof. An outer tangentially extending surface of the bar has a rotation path interrupted by the fixed surface. The drum also carries a blade forming one side of a wedge-shaped channel for guiding a trailing web-segment end during a bonding phase of an operating cycle. Upon the beginning of the bonding phase a leading web portion surrounds the package and traverses the drum channel. The rotation of the drum causes the press bar to clamp the web to the fixed surface, whereupon the blade cuts the web and produces a web segment having a trailing end. A heating mandrel pivoted into a wedge-shaped space between a leading web-segment end and the fixed surface on one side and the trailing web-segment end and the press bar on the other side slips over a surface of the trailing web-segment end, while being pushed towards a rest position by the rotating press bar. The press bar squeezes the heated segment end to the other end in a sweeping motion.

REFERENCES:
patent: 1650849 (1927-11-01), McChesney
patent: 3438173 (1969-04-01), Omori
patent: 3494280 (1970-02-01), Kobiella
patent: 3850780 (1974-11-01), Crawford
patent: 3851576 (0000-01-01), Takahashi
patent: 3858503 (1975-01-01), Takahash
patent: 3914153 (0000-01-01), Sato
patent: 4050372 (1977-09-01), Kobiella

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