Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Measuring a weight or volume
Patent
1987-09-14
1989-04-18
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Measuring a weight or volume
156 66, 15624415, 15624425, 156500, 264 407, 264173, 26417714, 2642098, 4251335, 425140, 425146, 425463, B29C 4706, B29C 4730, B29C 4792
Patent
active
048225398
ABSTRACT:
A method of and apparatus for controlled coextrusion of plastic bag making film and a reclosable fastener male profile comprising extruding the film through an orifice with which is aligned a profile orifice and one or more alignment rib orifices as well as one or more stablizing ridge orifice cooperating with the profile and/or rib orifices. The resulting extruded product provides a bag making material comprising a plastic film carrying the zipper profile and with one or more alignment ribs in spaced parallel relation to the profile, with a reinforcing ridge or ridges effecting stabilizing beam effect in respect to the alignment rib or ribs and/or the profile during the processing of the extruded product into its final bag making material form. The extrudate for the film and the extrudate for the alignment rib or ribs may be derived from separate sources so that different plastics of different density or characteristics may be supplied to the alignment rib or ribs. The plastic for the alignment rib or ribs and the stabilizing ridge or ridges may be derived from a common source. Controls are provided for independently controlling extrudate volume for the profile, the alignment rib or ribs, and the stabilizing ridge or ridges. ure
REFERENCES:
patent: Re27174 (1971-09-01), Ausnit
patent: 3198228 (1965-08-01), Naito
patent: 3543343 (1970-12-01), Staller et al.
patent: 3565737 (1971-02-01), Lefevre et al.
patent: 3715420 (1973-02-01), Kiyono et al.
patent: 3841816 (1974-10-01), Herz
patent: 4125585 (1978-11-01), Rosenbaum
patent: 4263079 (1981-04-01), Sutrina et al.
patent: 4562027 (1985-12-01), Behr et al.
patent: 4563319 (1986-01-01), Ausnit et al.
patent: 4672723 (1987-06-01), Hugues et al.
patent: 4741789 (1988-05-01), Zieke et al.
Machacek Zdenek
Scott Richmond
Tilman Paul A.
Minigrip Inc.
Tentoni Leo B.
Thurlow Jeffery
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