Package making – Methods – Enclosing contents within progressively formed web means
Patent
1980-05-20
1982-08-24
Spruill, R. L.
Package making
Methods
Enclosing contents within progressively formed web means
156251, 156267, 493342, 493373, B65B 902
Patent
active
043454151
ABSTRACT:
In accordance with the present invention protective envelopes for suction tubes or drinking straws as well as the tapes joining them are manufactured at the same time and of the same material. The suction tubes are placed with equal intervals transversely between two thermoplastic webs, whereupon these webs are sealed to each other around the suction tubes. At the same time the webs are punched or cut so that individual suction tube envelopes are obtained which are mutually connected by means of straps extending between the envelopes. In this manner all handling of separate wrapped suction tubes is avoided, so that the suction tube band can be manufactured with appreciably greater precision. The invention relates to the method of manufacture as well as to a machine for its realization and the finished suction tube band.
REFERENCES:
patent: 1830571 (1931-11-01), Sullwald
patent: 3333393 (1967-08-01), Sparks
patent: 3372797 (1968-03-01), Grevich
patent: 3482733 (1969-12-01), Groves
patent: 3589913 (1971-06-01), Rosenberg
patent: 3991540 (1976-11-01), Ballestrazzi et al.
patent: 4153496 (1979-05-01), Swift
patent: 4246058 (1981-01-01), Reed
Spruill R. L.
Tetra Pak International AB
Willis Charles L.
LandOfFree
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