Skip to Main Content
Shaping-lathe roundup machine is key to profitable manufacture of composite sheathing panels in Massachusetts or MaineAuthor(s): Norman Springate; Peter Koch; Irving Plough
Source: Forest Products Journal, Vol. 28(10): 42-47
Publication Series: Miscellaneous Publication
PDF: Download Publication (2.03 MB)
DescriptionA process is described in which a shaping-lathe headrig produces flakes of optimum geometry while rounding 8-foot peeler bolts to their maximum cylindrical diameter. The cylinder are then passed, at a rate of 5 to 7 per minute, to a veneer lathe for production of continuous veneer, which is Subsequently clipped into 4- by 8-foot sheet.. Veneer cores are flaked in a separate operation; these flakes, mixed with the flakes resulting from roundup, veneer residue, and panel trim, are pressed into 4- by 8-foot core sheets 9/32 to 13/32 inch thick. In a separate pressing operation, the flake cores are faced with 1/8-inch veneer to yield structural exterior composite sheath-ing of superior quality. By this process, a ton of bark-free peeler bolts should yield more than .9 ton of sheathing (OD basis); less than .1 ton (mostly sanderdust) ends 88 fuel. All other residue, except bark, is incorporated in the sheathing. The proposed plant will consume 5,000 to 6,000 peeler bolt. per 3- shift day. Baaed on an average log diameter (small end, inside bark) of 10 inches, annual production during 240 3-shift operating days should be 100,000,000 square feet of 17/32.inch panel (1/2 inch nominal). Plant cost plus operating capital is estimated at $23,000,000. when sited in western Massachusetts or in central Maine, the operation should return a before-tax profit of about 36 percent (and an after tax profit of 18-1/2%) of the entire investment; cash flow should be about 28-1/2percent, or $6,520,000 annually, after taxes.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationSpringate, Norman; Koch, Peter; Plough, Irving. 1978. Shaping-lathe roundup machine is key to profitable manufacture of composite sheathing panels in Massachusetts or Maine. Forest Products Journal, Vol. 28(10): 42-47
- Shaping-lathe roundup machine is key to profitable manufacturing of composite sheathing panels in Massachusetts or Maine
- Shaping-lathe headrig will convert small hardwoods into pallet cants plus flakes for structural exterior flakeboard
- shaping-lathe headrig yields solid and molded-flake hardwood products
XML: View XML