초록 ▼

A process is described in which a tubular bar (27) which is substantially but not entirely filled with flowable solids (28), is closed at one end. To close the tubular bar (27) at its end, a thread (3) is introduced into the tubular bar (27) and is caused to form a ball of thread therein. The thread

A process is described in which a tubular bar (27) which is substantially but not entirely filled with flowable solids (28), is closed at one end. To close the tubular bar (27) at its end, a thread (3) is introduced into the tubular bar (27) and is caused to form a ball of thread therein. The thread (3) is preferably introduced into the tubular bar by being blown through a hollow needle (11).

대표청구항 ▼

A method of closing an unfilled end portion of a perforated tubular bar which is filled elsewhere with flowable solids for use in the manufacture of spacer frames for insulating glass comprising the steps of blowing a thread into said unfilled end portion and causing it to form a ball of thread ther

A method of closing an unfilled end portion of a perforated tubular bar which is filled elsewhere with flowable solids for use in the manufacture of spacer frames for insulating glass comprising the steps of blowing a thread into said unfilled end portion and causing it to form a ball of thread therein. An apparatus for closing an unfilled end portion of a perforated tubular bar which is filled elsewhere with flowable solids for use in the manufacture of spacer frames for insulating glass, comprising a hollow needle having a forward end, means for inserting the forward end of the hollow needle into the unfilled end portion of said tubular bar, thread-introducing means for introducing a thread into said hollow needle at a distance from said forward end, and blowing means for blowing air into said hollow needle at a location which is upstream from said forward end.