Treating glass sheets to heal vents that result in breakage duri

Details Treating glass sheets to heal vents that result in breakage duri Treating glass sheets to heal vents that result in breakage duri

1982-03-31

1983-11-22

Thomas, Alexander S.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428174, 428336, 428428, 428432, 427140, 427269, 427287, 4273762, 4273747, 427429, 65 28, 65 3014, 65 608, 296 84R, 296 90, B32B 1706, B32B 310, C03C 1702

Patent

active

044169302

ABSTRACT:
This invention relates to applying a protective composition to the vicinity of a scored region of a glass sheet. The scored region is weakened and develops vents as a result of the scoring. Such vents are likely to develop breakage when the glass sheet is subjected to a thermal treatment associated with tempering. The application of the protective composition is made before the glass sheet is subjected to thermal processing by heating to above its strain point followed by rapid cooling below its strain point. The protective composition flows at a lower temperature than the glass sheet to which it is applied and is capable of healing the scored region during the thermal treatment to which the glass sheet is subjected after the application of said protective composition, thereby reducing the tendency of a vent to develop into glass breakage during said thermal treatment.

REFERENCES:
patent: 1672857 (1928-06-01), Blake et al.
patent: 2236911 (1941-04-01), Long
patent: 2779136 (1957-01-01), Hood et al.
patent: 2871623 (1959-02-01), Marini
patent: 3149945 (1964-09-01), Betrand et al.
patent: 3232788 (1966-02-01), Marzocchi et al.
patent: 3251670 (1966-05-01), Acloque
patent: 3287201 (1966-11-01), Chisholm et al.
patent: 3352655 (1967-11-01), Barch et al.
patent: 3498773 (1970-03-01), Grubb et al.
patent: 3505051 (1970-04-01), Buckley et al.
patent: 3551234 (1970-12-01), Britton
patent: 3765859 (1973-10-01), Seymour
patent: 3827872 (1974-08-01), Augustin et al.
patent: 3843472 (1974-10-01), Toussaint et al.
patent: 3894858 (1975-06-01), Rogers
patent: 3960535 (1976-06-01), Hamilton et al.
patent: 3988136 (1976-10-01), Rogers
patent: 4000997 (1977-01-01), Rogers
patent: 4021218 (1977-05-01), Watanabe
patent: 4023945 (1977-05-01), Boaz
patent: 4164402 (1979-08-01), Watanabe

Affiliated with

Also associated with

Rating

Treating glass sheets to heal vents that result in breakage duri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Treating glass sheets to heal vents that result in breakage duri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Treating glass sheets to heal vents that result in breakage duri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1815095