FIELD: one-way valve used in food product packages.
SUBSTANCE: one-way valve is adapted to be opened at excessive pressure within package and may be repeatedly closed. One-way valve has adhesion sheet positioned on the top of cut provided in packaging material. Sheet is designed so that cut is opened under the action of loading created by pressure occurring within package. The package itself is therefore used as part of valve. One-way valve allows food products to be hermetically sealed and heated immediately within package.
EFFECT: reduced risk of penetration of contaminating substances into package owing to formation of cut-formed opening in package and due to adhesion sheet.
16 cl, 9 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PACKAGE | 2019 |
|
RU2766368C2 |
| MULTILAYERED FILM AND FILM PACKAGE MADE WITH POSSIBILITY OF RECLOSING | 2019 |
|
RU2789267C1 |
| RESEALED LAMINATE FOR HEAT-SEALED BAG | 2010 |
|
RU2491173C1 |
| MULTILAYER FILM AND FILM PACKAGE MADE WITH POSSIBILITY OF REPEATED CLOSING | 2016 |
|
RU2688856C2 |
| RE-SEALED FLEXIBLE PACKAGE AND METHODS OF ITS MANUFACTURE | 2011 |
|
RU2574489C2 |
| OPENING DEVICE, PACKING AND METHOD TO PRODUCE PACKING WITH OPENING DEVICE | 2003 |
|
RU2329185C2 |
| DISPOSABLE ONE-WAY FOOD PACKAGE VALVE EMITTING SOUND SIGNAL WHEN HEATED TO SUFFICIENT TEMPERATURE | 2003 |
|
RU2304075C2 |
| CARTON FOR TOBACCO GOODS | 1997 |
|
RU2202504C2 |
| END LOADING CARDBOARD CONTAINER WITH CLOSING SYSTEM | 2015 |
|
RU2696781C2 |
| CARDBOARD BOX | 2007 |
|
RU2347730C1 |
