| 摘要 |
580,022. Collapsable tubes. BETTS & CO., Ltd., MENHENEOTT, F. M., and HAGGER, W. J. Aug. 22, 1944, No. 16001. [Class 66] [Also in Group XXII] A non-corroding insert 1, Figs. 4 and 9, e.g:, of tin, or of urea-formaldehyde, phenol-formaldehyde, or nitrocellulose with a flared skirt 2 is pressed into the neck of a collapsable tube 4. It may be retained in place by adhesive, or the neck of the insert may be fluted externally. In a modification, the insert projects outside the collapsable tube, and is turned over to cover the screw-thread, at 8.
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