Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Patent
1985-07-31
1986-11-04
Therkorn, Ernest G.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
156204, 156290, 1563084, 156324, 156553, 156555, 264145, 264159, 264160, 264248, 425383, 425409, B32B 3114, B32B 3126
Patent
active
046208950
ABSTRACT:
A square filler for water treatment and an apparatus for the manufacture thereof are disclosed. The square filler is used as a contact medium for aerobic or anaerobic treatment of sewage.
The square filler is made of synthetic resin net sheet or net tube of which a plurality of net layers are formed, and melt-bonding is applied to at least one spot on each layer for fixing all layers together.
An apparatus for manufacturing square fillers flattens the net sheet or net tube for forming net layers with the application of pressure, intermittently feeds the flattened net sheet or net tube in the longitudinal axial direction thereof, and heats the net sheet or net tube for softening during transfer thereof.
The heated net sheet or net tube is locally pressed with projections for melt-bonding so that net layers are locally melt-bonded to each other, thereby square fillers having net layers fixed by solidification thereof are obtained.
REFERENCES:
patent: 3703430 (1972-11-01), Rich
patent: 3785897 (1974-01-01), Zipf
patent: 3791266 (1974-02-01), Bucalo
patent: 3823047 (1974-07-01), Colombo
patent: 3978637 (1976-09-01), Mauriello
patent: 4082598 (1978-04-01), Katagi
patent: 4184946 (1980-01-01), Kato
patent: 4264392 (1981-04-01), Watt
patent: 4376671 (1983-03-01), Schulz
patent: 4417936 (1983-11-01), Gaffney
Terashima et al., "Performance of the Biofilm Reactor with Porous Tube Waterwheel Aerator and Fold Net Filters", 1984.
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