US 12,239,206 B2
Packaging tube
Yongqing Fang, Zhejiang (CN); Weifeng Zhu, Zhejiang (CN); Bokun Ni, Zhejiang (CN); and Junjie Huang, Zhejiang (CN)
Assigned to ZHEJIANG AXILONE SHUNHUA ALUMINUM & PLASTIC CO., LTD, Shaoxing (CN)
Filed by ZHEJIANG AXILONE SHUNHUA ALUMINUM & PLASTIC CO., LTD, Zhejiang (CN)
Filed on Mar. 28, 2023, as Appl. No. 18/127,183.
Application 18/127,183 is a continuation of application No. PCT/CN2021/071037, filed on Jan. 11, 2021.
Claims priority of application No. 202011061476.8 (CN), filed on Sep. 30, 2020.
Prior Publication US 2023/0232963 A1, Jul. 27, 2023
Int. Cl. A45D 40/06 (2006.01); A45D 40/20 (2006.01)
CPC A45D 40/06 (2013.01) [A45D 2040/204 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A packaging tube, comprising a center tube core and a base,
wherein the center tube core and the base are both made of metal, the center tube core has an axial direction and comprises a bead, a prong and a spiral arranged from interior to exterior in sequence, and
wherein an inner wall of the spiral has a threaded structure which is configured to drive the bead to slide axially relative to the prong when the spiral rotates relative to the prong, and fitting structures that are pluggable one another in the axial direction are provided between the prong and the base for limiting relative movement between the prong and the base in the axial direction and a circumferential direction;
wherein a bottom of the prong is provided with a socket, or the bottom of the prong is fixed with a connecting seat having the socket, and the base is provided with a plug fitting with the socket; and both the socket and the plug, at least locally, have a non-circular cross-sectional shape to limit circumferential movement therebetween;
the base comprises an outer base and an inner base located within the outer base, and wherein the inner base comprises a fixing plate and a columnar portion protruding axially from middle of the fixing plate and used as the plug; and
the columnar portion is formed by punching the fixing plate and a closed plane is formed at a top thereof to improve the structural strength of the plug.