Press-bending method and apparatus for bending glass sheets

Details Press-bending method and apparatus for bending glass sheets Press-bending method and apparatus for bending glass sheets

1993-05-12

1995-01-24

Woodard, Joye L.

Glass manufacturing

Processes

Utilizing parting or lubricating layer

65106, 651822, 65287, 65289, C03B 23035

Patent

active

053839471

ABSTRACT:
The invention relates to a press-bending method and apparatus for bending glass sheets. The press bending is effected between an upper curved mold surface (12) and a lower ring mold (13). Air is blown through pores included in an upper mold (2) into a space (3) between mold surface (12) and a glass sheet (11), and vacuumed from the edges of the space for developing in the space (3) a negative pressure (P.sub.2) capable of bearing a glass sheet (1) in the immediate proximity of the mold surface (12), yet without contacting the mold surface (12).

REFERENCES:
patent: 3223443 (1965-12-01), Mission
patent: 4615724 (1986-10-01), Fackelman
patent: 4877437 (1989-10-01), Nitschke
patent: 5079931 (1992-01-01), Lehto et al.

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