Flexible bags – Wall details – Pleated or gusseted
Patent
1987-01-23
1988-08-16
Garbe, Stephen P.
Flexible bags
Wall details
Pleated or gusseted
206802, 426135, A22C 1302, B65D 3020
Patent
active
047640316
ABSTRACT:
Disclosed is a cylindrically-shaped hollow rod which is closed at one end, comprising a shirred tubular casing, and an integral, essentially cylindrically-shaped, plug-type closure element which is coaxially arranged in the cavity of the hollow rod and which comprises a deshirred tubing portion and an irregularly folded, compressed tubing portion, wherein a first one of the tubing portions is adjacent to the inside wall of the hollow rod, and the second tubing portion is surrounded by the first tubing portion, wherein one end of the first tubing portion, which points in the direction of the open end of the hollow rod, is bent back at an angle of 180.degree. and integrally changes into the second portion, and wherein the other end of the first tubing portion integrally changes into the hollow rod. Also disclosed is a process for producing the hollow rod having the end closure according to the invention.
REFERENCES:
patent: 3274005 (1966-09-01), Alsys
patent: 3383222 (1968-05-01), Alsys et al.
patent: 3892869 (1975-07-01), Sheridan et al.
patent: 3971301 (1976-07-01), Becker et al.
patent: 4075938 (1978-02-01), Martinek
patent: 4428402 (1984-01-01), Kubo et al.
Andrae Klaus
Bytzek Max
Hutschenreuter Elfriede
Weinheimer Alois
Garbe Stephen P.
Hoechst Aktiengesellschaft
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