| 摘要 |
675,707. Paper bags. PERMUTIT CO., Ltd. Jan. 16, 1951 [Feb. 18, 1950], No. 1217/51. Class. 94(ii) [Also in Group I] The top of the pliable plastic bag 10 of a device for the treatment of a liquid (see Group I) is made liquid-tight by rolling a few turns around stiffening strips 12, Fig. 1, 13, Fig. 3, provided at the top of the bag and these turns are held tightly together by a snap fastener 25, Fig. 2. The two components 20, Fig. 1, and 25, Fig. 3, of the fastener are mounted on tongues 21, Fig. 1, and 24, Fig. 3, respectively. The base 22 of tongue 21 is widened and secured to a stiff plate 23 secured to the bag. The base 26 of tongue 24 is widened and secured to the bag on the opposite face to tongue 21. Specification 577,449, [Group I], is referred to. |
