JPH01168849U - - Google Patents

Info

Publication number

JPH01168849U

JPH01168849U JP6693888U JP6693888U JPH01168849U JP H01168849 U JPH01168849 U JP H01168849U JP 6693888 U JP6693888 U JP 6693888U JP 6693888 U JP6693888 U JP 6693888U JP H01168849 U JPH01168849 U JP H01168849U

Authority

JP

Japan

Prior art keywords

heating element

heating

placement part

glass bead

melting

Prior art date

1988-05-20

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 238000010438 heat treatment Methods 0.000 claims description 11
• 239000011324 bead Substances 0.000 claims description 6
• 239000011521 glass Substances 0.000 claims description 6
• 238000004519 manufacturing process Methods 0.000 claims description 4
• 238000002844 melting Methods 0.000 claims description 3
• 230000008018 melting Effects 0.000 claims description 3
• 238000002360 preparation method Methods 0.000 description 1