Manufacturing container or tube from paper; or other manufacturi – Bending – Folding
Patent
1986-03-21
1987-10-20
Spruill, Robert L.
Manufacturing container or tube from paper; or other manufacturi
Bending
Folding
493423, 493438, 493455, B31F 100
Patent
active
047011564
ABSTRACT:
Apparatus and methods of operation for automatically folding obstetrical pads into a so-called three-fold configuration which occupies approximately 40% less volume than two-fold pads of the prior art. The obstetrical pads, as fabricated, have two opposed, elongated tab portions extending beyond the pad proper, and the pad is folded by the apparatus so that these tab portions are juxtaposed adjacent one another in order to facilitate removal of the pad from its package and provide enhanced convenience in preparation of the pad for use. More importantly, the placement of the tab portions in this fashion permits the handling of the pad without contaminating the sterile field in the inner fold area of the pad. By virtue of the reduced volume of the three-fold pad, substantial savings are realized in the manufacturing process, in the storage facilities required for warehousing and inventory at each step in the distribution process, as well as in shipping. The folding apparatus comprises a plurality of stations located in sequence to which each pad is directed in succession by a series of operationally synchronized conveyor belts and drive cylinders, wherein separate steps in guiding the respective folding and positioning operations are performed. Selectively directed blasts of air at strategic points in the folding apparatus are used to assist in the folding and positioning steps.
REFERENCES:
patent: 1673763 (1928-06-01), Flather
patent: 3369544 (1968-02-01), Crockford
patent: 3502322 (1970-03-01), Cran
patent: 3635462 (1972-01-01), Joa
patent: 3963029 (1976-06-01), Brooks
patent: 4022457 (1977-05-01), Marin et al.
Bissell Henry M.
Paper-Pak Products, Inc.
Spruill Robert L.
Weihrouch Steven P.
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