Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Reshaping running or indefinite-length work
Patent
1994-03-11
1995-08-22
Loney, Donald J.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Reshaping running or indefinite-length work
264241, 264285, 264505, 156205, 156207, 29895, B31F 120
Patent
active
054437792
ABSTRACT:
The strength and workability of a reinforced composite corrugated body are improved. A corrugated body is produced such that corrugate lines provided with vertically spaced ridges and grooves formed alternately in a sheet material are formed in a smooth meandering waveform in a horizontal direction. The corrugate lines are formed by corrugating rollers to have a substantial amplitude ratio H/L higher than or equal to 0.4 but lower than or equal to 1.4, a substantial meandering ratio D/N lower than or equal to 0.35, a substantial meandering overlapping ratio higher than or equal to 0.5 and a width narrowing ratio i in the advancing direction of the corrugate lines lower than or equal to 8% plus a stretch strain ratio of the sheet material. Sectional shapes of crest and bottom portions of the corrugate lines are formed to be curved or chamfered with a small width. A flat liner is adhered to at least one of the opposite faces of the resultant corrugated body.
REFERENCES:
patent: 2963128 (1960-12-01), Rapp
patent: 3698879 (1972-10-01), Lucien
patent: 3992162 (1976-11-01), Gewiss
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