Glass manufacturing – Preform reshaping means – Sheet bending mold
Patent
1989-03-14
1990-01-30
Kellogg, Arthur
Glass manufacturing
Preform reshaping means
Sheet bending mold
65104, 65273, 6537411, C03B 23023
Patent
active
048971022
ABSTRACT:
An improved covering for continuous surface press bending molds providing selectively variable rigidity for matching that desired in bending a particular part on the mold. The shaping element of the mold includes a resilient body having a latticework of flexible metallic bands encapsulated therein. The resilient body is covered by a plurality of superimposed individual sheets of a fibrous, heat-resistant, normally pliable material which, in turn, are covered by a layer of fiberglass cloth. One or more of the individual fibrous sheets is treated with a rigidizer to impart a selected suitable degree of rigidity to the shaping element.
REFERENCES:
patent: 4246313 (1981-01-01), Stengle, Jr.
patent: 4274857 (1981-06-01), Wolfe
patent: 4522641 (1985-06-01), Hagedorn et al.
patent: 4579577 (1986-04-01), Claassen
Hagedorn Floyd T.
Hall Harold R.
Modesitt William L.
Kellogg Arthur
Libbey-Owens-Ford Co.
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