US 12,351,357 B2
Integral pulp-molded bottle, mold for molding integral pulp-molded bottle, apparatus and process for producing integral pulp-molded bottle
Kun Xu, Anyang (CN); Junzhong Chen, Anyang (CN); Guozhong Fei, Anyang (CN); Chao Shen, Anyang (CN); Huawei Zuo, Anyang (CN); Fujiao Liu, Anyang (CN); Shuangxi Xue, Anyang (CN); and Guangde He, Anyang (CN)
Assigned to THE WING FAT PRINTING CO., LTD., Hong Kong (CN)
Appl. No. 17/793,932
Filed by THE WING FAT PRINTING CO., LTD., Hong Kong (CN)
PCT Filed May 17, 2021, PCT No. PCT/CN2021/094157
§ 371(c)(1), (2) Date Jul. 20, 2022,
PCT Pub. No. WO2021/228262, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 202010414396.X (CN), filed on May 15, 2020; application No. 202010415313.9 (CN), filed on May 15, 2020; application No. 202010415315.8 (CN), filed on May 15, 2020; and application No. 202010415316.2 (CN), filed on May 15, 2020.
Prior Publication US 2023/0055532 A1, Feb. 23, 2023
Int. Cl. B65D 1/02 (2006.01); D21J 3/10 (2006.01)
CPC B65D 1/0207 (2013.01) [D21J 3/10 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A mold for molding an integral pulp-molded bottle shell, comprising
a pulp suction system,
an extrusion system, and
a hot-press molding system, wherein
the pulp suction system comprises
a pulp injection mold plate,
a pulp injection cavity, and
a pulp suction mold plate;
the pulp suction mold plate is provided with a cavity, wherein the cavity is the same as the integral pulp-molded bottle in shape; the pulp injection mold plate is located above the cavity and the pulp injection mold plate is connected to the pulp injection cavity; the pulp injection cavity has an extension portion, the extension portion is provided with pulp injection orifices, the extension portion extends into the cavity of the pulp suction mold plate, and a pulp is injected via the pulp injection orifices; the pulp suction mold plate is provided with pulp suction holes and a pulp suction cavity; the pulp suction holes are formed in a peripheral surface of the cavity and the pulp suction holes communicate with the pulp suction cavity; and the pulp suction cavity is connected to a vacuum equipment to mold, by the vacuum pumping, a preliminary wet bottle preform is formed by the pulp injection into the pulp suction cavity subjected to the pulp suction;
the extrusion system is configured to form a premolded pulp-molded bottle by applying pressure to expand a first elastomer bag wherein the pressure applied to the first elastomer bag is controlled to be 1 kgf; and
the hot-press molding system is configured to form an integral pulp-molded bottle by applying pressure to expand a second elastomer bag wherein the second elastomer bag has resistance to a temperature of 150° C. and resistance to a pressure of 5 kgf.