Abstract: Proposed is a gas discharge valve for a packaging material, the gas discharge valve being attached on an upper surface of a packing material in a manner that covers a through-hole formed in one side of the packing material and being configured to discharge to the outside thereof only gas within the packing material, the gas discharge valve including: a high-adhesiveness layer attached to an external surface of the packing material and adhered to a portion of the external surface in the vicinity of the through-hole; and a low-adhesiveness layer formed inside the high-adhesiveness layer and adhered to cover a top opening of the through-hole, where, when gas occurs within the packing material, the low-adhesiveness layer is inflated by pressure, a portion thereof is raised, and the gas is discharged, and when the pressure is released, the low-adhesiveness layer seals the through-hole, thereby blocking introduction of outside air.

Abstract: Proposed is a gas discharge valve for a packaging material, the gas discharge valve being attached on an upper surface of a packing material in a manner that covers a through-hole formed in one side of the packing material and being configured to discharge to the outside thereof only gas within the packing material, the gas discharge valve including: a high-adhesiveness layer attached to an external surface of the packing material and adhered to a portion of the external surface in the vicinity of the through-hole; and a low-adhesiveness layer formed inside the high-adhesiveness layer and adhered to cover a top opening of the through-hole, where, when gas occurs within the packing material, the low-adhesiveness layer is inflated by pressure, a portion thereof is raised, and the gas is discharged, and when the pressure is released, the low-adhesiveness layer seals the through-hole, thereby blocking introduction of outside air.

Abstract: A sealable lidding film for discharging gas according to an exemplary embodiment of the present invention may seal an opening of a main body, has a structure in which a first layer and a second layer, which are configured such that gas flows between one surface and the other surface, are stacked, and may include lamination portions which are formed by partially laminating the first layer and the second layer; and gap portions which are regions other than regions of the lamination portions and have spaces formed between the first layer and the second layer so that the gas flows in the spaces. According to the sealable lidding film for discharging gas, the spaces, in which the gas may flow, are formed by partially laminating the first and second layers having the fine bores, and as a result, it is possible to prevent expansion and deformation of the sealable lidding film or the container by smoothly discharging the gas created in the container.

Abstract: A packing sheet for discharging gas according to an exemplary embodiment of the present invention has a structure in which a first layer and a second layer, which are configured such that gas flows between one surface and the other surface, are stacked, and includes: a lamination portion which is formed by partially laminating the first layer and the second layer; and a gap portion which is a region other than a region of the lamination portion and has a space formed between the first layer and the second layer so that the gas flows in the space. According to the packing sheet for discharging gas, a space, in which gas may flow, is formed by partially laminating the first layer having fine bores and the second layer made of a gas-permeable waterproof material, and as a result, it is possible to prevent a liquid leakage while smoothly discharging the gas created in the container.

Abstract: A sealable lidding film for discharging gas according to an exemplary embodiment of the present invention may seal an opening of a main body, has a structure in which a first layer and a second layer, which are configured such that gas flows between one surface and the other surface, are stacked, and may include lamination portions which are formed by partially laminating the first layer and the second layer; and gap portions which are regions other than regions of the lamination portions and have spaces formed between the first layer and the second layer so that the gas flows in the spaces. According to the sealable lidding film for discharging gas, the spaces, in which the gas may flow, are formed by partially laminating the first and second layers having the fine bores, and as a result, it is possible to prevent expansion and deformation of the sealable lidding film or the container by smoothly discharging the gas created in the container.

Abstract: A packing sheet for discharging gas according to an exemplary embodiment of the present invention has a structure in which a first layer and a second layer, which are configured such that gas flows between one surface and the other surface, are stacked, and includes: a lamination portion which is formed by partially laminating the first layer and the second layer; and a gap portion which is a region other than a region of the lamination portion and has a space formed between the first layer and the second layer so that the gas flows in the space. According to the packing sheet for discharging gas, a space, in which gas may flow, is formed by partially laminating the first layer having fine bores and the second layer made of a gas-permeable waterproof material, and as a result, it is possible to prevent a liquid leakage while smoothly discharging the gas created in the container.