Patent Name One-way Breathable Valve for Packaging Patent Applicant Yang Wei Principal Applicant Address 065000, China Guangfang, Langfang Branch, No. 1 Guangyang Road, Langfang City, Hebei Province, China Marketing Development Department Jin Ning Transfer Inventor Yang Wei Application (Patent) No. 200420092901.X Application Date 2004.09.23 Award date Auditing announcement number 2736284 Auditing announcement date 2005.10.26 Instruction CD-ROM D0543 Main classification number B65D30/24 Classification number B65D30/24; B65D33/01 Division Original application number PRIORITY AUTHORIZATION Venting valve for packaging. The one-way breathable valve for packaging includes a body 1, and a longitudinal section of the body 1 is in a groove shape, and a hole is provided on the end surface. Improvements are provided in the inner side of the body 1 from the inside to the outside. There is an intermediate plastic sheet 2 and a cover 3 . This kind of one-way breathable valve for packaging uses intermediate plastic sheets instead of rubber sheets, which reduces the weight and improves the air permeability. And the plastic sheet has good oil resistance and the cost is much lower than oil-resistant rubber. The addition of a filter layer on the outside of the body can be used for the packaging of the powder material, so that the powder particles do not block the pores on the body and affect the air permeability. Sovereignty item 1. A one-way breathable valve for packaging, comprising a body (1), wherein the body (1) has a longitudinal section in the form of a groove, and is provided with an aperture on the end face, which is characterized in that the body (1) The inner side of the inner side is provided with an intermediate plastic sheet (2) and an upper lid (3) in this order. International Application International Announcement Date of Entry into the Country Patent Agency Shijiazhuang Zangke Patent & Trademark Office Co., Ltd. Agency Address Agent Li Guiqin
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Plastic sushi boxes are very simple to clean and maintain. Due to the smooth surface of the plastic material, food is not easy to adhere to it, just gently clean with warm water and dish soap. In addition, the plastic sushi box can also be washed in the dishwasher, eliminating the need for manual cleaning.
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Plastic sushi tray can be used over and over again and are not discarded like disposable food boxes. This helps to reduce the generation of plastic waste and is more environmentally friendly. Some plastic sushi boxes are also made from recycled materials, further reducing the environmental impact.
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