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Title:
GAS DISCHARGE FILM FOR COFFEE PACKET AND COFFEE PACKET
Document Type and Number:
WIPO Patent Application WO/2021/035593
Kind Code:
A1
Abstract:
A coffee packet (50) and a gas discharge film (100, 200, 300) thereof, which can solve the problem in the prior art that gas cannot be discharged when an inlet is blocked by an internal pressure of a gas discharge film for a coffee packet. The gas discharge film for a coffee packet comprises at least one inner film layer (20) and one outer film layer (10) which are laminated by adhesive; the outer film layer is provided with an outlet (11), the inner film layer is provided with inlets (21), and gas discharge passages (42) are provided between the outlet and the inlets, the inlets and the outlet being provided on the gas discharge passages; in addition, inlet spacers (30) are provided on the gas discharge passages between the outer film layer and the inner film layer; gaps (43) are formed at the inlets to connect the inlets and the gas discharge passages, so as to discharge gas (53) inside a coffee packet. The present invention solves the problem that gas cannot be discharged when the inlet is blocked by an internal pressure of the coffee packet.

Inventors:
TZU KUO-HSIANG (CN)
Application Number:
PCT/CN2019/103150
Publication Date:
March 04, 2021
Filing Date:
August 29, 2019
Export Citation:
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Assignee:
KUNG LONG HONG CO LTD (CN)
International Classes:
B65D33/01; B65D81/05
Domestic Patent References:
WO2007006060A12007-01-18
Foreign References:
CN205633478U2016-10-12
CN109229871A2019-01-18
CN2778711Y2006-05-10
CN208326088U2019-01-04
CN202201270U2012-04-25
Attorney, Agent or Firm:
BEIJING HC-IP AGENCY CO., LTD. (GENERALPARTNERSHIP) (CN)
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