초록 ▼

The present tubular containers, for example for foodstuffs, toothpaste, or the like, have a top cap secured to an initially open ended tubular body by means of a heat bond such as soldering where metal containers are involved or welding or fusing where plastics materials are involved. The heat for m

The present tubular containers, for example for foodstuffs, toothpaste, or the like, have a top cap secured to an initially open ended tubular body by means of a heat bond such as soldering where metal containers are involved or welding or fusing where plastics materials are involved. The heat for making the bond is generated by friction resulting from relative rotation between the cap and the tubular body. For this purpose, a tool is provided with a rotatably supported counter presser forming an inner holding member and with a rotating presser tool forming an outer holding member which holding members hold the cap therebetween so that its outer rim contacts the edge of the tubular body to produce frictional heat when the cap and tubular body are rotated relative to each other, said frictional heat being sufficient to cause said bond.

대표청구항 ▼

An apparatus for bonding a cap to one end of an open ended tubular body along a joining seam adjacent one end of said tubular body by applying heat to said seam, comprising first means for holding said tubular body, said first holding means having a longitudinal axis, second means for holding said c

An apparatus for bonding a cap to one end of an open ended tubular body along a joining seam adjacent one end of said tubular body by applying heat to said seam, comprising first means for holding said tubular body, said first holding means having a longitudinal axis, second means for holding said cap in axial alignment with said first holding means relative to said longitudinal axis, means for axially moving said first and second holding means axially relative to each other, pressure menas for pressing said holding means axially relative to each other to bring the cap into frictional contact with said tubular body along said seam, drive means operatively connected to at least one of said holding means for positively rotating one of said holding means relative to the other to produce sufficient bonding heat by friction between the cap and the tubular body, wherein said second holding means comprise an outer holding member and an inner holding member, a housing, means for rotatably and axially movably supporting said outer holding member in said housing, and means for rotatably supporting said inner holding member inside said tubular body in axial alignment with said outer holding member to receive said cap between the inner and outer holding members, and wherein said pressure means are located between said outer holding member and said housing for pressing the outer holding member and thus the cap against the inner holding member.