Telescopic packaging tube

【patent type】 utility model 【patent name】 retractable packaging drum 【invention (designer]】 Sun Xianhua 【 applicant 】 Sun Xianhua [main applicant address ] 322000, No. 8, Baolian West Street, Houjie Town, Yiwu, Zhejiang, China No. : 200520118123.1
【 Application Date 】 2005.08.31
[Examination and announcement number] 2820722
【 Validation announcement date 】 2006.09.27
[Main classification number] B65D21/08(2006.01)I
[Classification] B65D21/08(2006.01)I
[Instructions CD-ROM] D0639-2
【 Abstract 】 The utility model relates to a packaging device, in particular to a packaging cylinder for packaging slender objects. To provide a package that can be stretched according to the length of the item. Including the outer cylinder and the inner cylinder, matching threads are provided on the inner wall of the outer cylinder and the outer wall of the inner cylinder. With the telescopic packaging cylinder having the above structure, the inner cylinder is screwed into the outer cylinder through the thread during use, so that the length of the packaging cylinder can be adjusted by rotating the inner cylinder or the outer cylinder by screwing the thread so that the packaging cylinder can be applied to different lengths. Objects.
[Sovereign Items] 1. A retractable packaging tube, characterized in that the packaging tube comprises an outer tube and an inner tube, and matching threads are provided on the inner wall of the outer tube and the outer wall of the inner tube.
【 Agency 】 Beijing Zhongbo Shida Patent & Trademark Agency Co., Ltd. 【Attendant】 张岱

Excerpt from: Wanfang Data