Package making – Methods – With nonreactive packaging materials
Patent
1978-09-19
1980-04-29
Culver, Horace M.
Package making
Methods
With nonreactive packaging materials
53434, 53469, 53473, 53479, 141 48, 141 67, B65B 116, B65B 310, B65B 316, B65B 326
Patent
active
041999150
ABSTRACT:
A method for producing sealed packages filled with fluid material wherein a limited amount of the material is delivered into a predetermined length of flexible, thermoplastic tubing, the major portion of which is wound on a primary reel, and the remainder of which is wound on a secondary reel. The amount is less than that required to completely fill the tubing, thus providing a slug of fluid material in the tubing on the primary reel and a vacant space in the tubing on the secondary reel. The amount of tubing on the secondary reel is calculated in advance to be equal in length to that portion of tubing required for the production of heat-sealed closures along the length of the tubing. The slug of material is displaced toward the secondary reel, thus creating a vacant space at the end of the tubing on the primary reel, and the tubing is rewound onto the primary reel. Then, starting with the filled end, the tubing is sequentially heat-sealed to provide spaced-apart closure portions along the entire length of the tubing, thereby producing individually sealed packages filled with the fluid material. In accordance with this method, which is especially suited for the packaging of anerobic adhesive material, the limited amount of material exactly fills the predetermined length of tubing. Packages produced in accordance with this method possess marked advantages over prior art packages for anerobic adhesive material.
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