TWM548149U - Well-ventilated bag for fruit and vegetable preservation - Google Patents

Description

Gas transparent type vegetable and fruit storage bag

The utility model relates to a multifunctional vegetable and fruit fresh-keeping bag, in particular to a vegetable and fruit fresh-keeping bag which can pass through a gas permeable body.

The more fresh vegetables and fruits, the more they retain their deliciousness and nutrition, but the time to pick and sell vegetables and fruits to the hands of consumers, how to preserve the fresh nutrition of fruits and vegetables is a big problem.

During transportation and storage, fruits and vegetables are often packed in plastic foam net bags, plastic bags or plastic boxes. In addition to facilitating consumers' purchase, they can also block external pollutants or prevent collision damage of fruits and vegetables during transportation. The packaging of plastic materials may be the murderer to further accelerate the corruption of fruits and vegetables.

In general, there are three key elements in the preservation of fruits and vegetables: temperature, humidity and gas. Only by properly adjusting the temperature and humidity, and removing the spontaneous catalytic mature gas of fruits and vegetables such as ethylene, and maintaining the fresh-keeping gas in the storage environment of fruits and vegetables. The concentration can effectively delay the degree of decay of fruits and vegetables. Temperature regulation can be achieved by storing fruits and vegetables in an incubator or refrigerator, and humidity and gas conditioning often need to be achieved through packaging materials for fruits and vegetables.

The aforementioned plastic foamed mesh bag, because of the completely open design of the mesh bag, can only provide the anti-collision function during the transportation of fruits and vegetables, and can not regulate the humidity and remove the spontaneous catalytic gas of fruits and vegetables; while the plastic bag or the plastic box can be sealed. And completely block the function of the gas, but it may cause the fruits and vegetables to breathe in a closed environment, and consume a lot of oxygen until it is anaerobic, or because the water is in a plastic bag or A large number of plastic boxes accumulate to accelerate the apoptosis or spoilage of fruits and vegetables. These are the problems that need to be solved in the packaging materials of plastic foam net bags, plastic bags or plastic boxes. At present, there is no humidity adjustment and gas regulation at the same time. The existence of multifunctional packaging materials.

In order to improve the existing plastic foam mesh bags, plastic bags or plastic boxes, during the storage of fruits and vegetables, only a single protection, sealing or blocking function can be provided, and the perfect preservation effect of fruits and vegetables can not be provided. a gas permeable type vegetable and fruit storage bag comprising a catalytic gas removal film and a gas permeable membrane, wherein the catalytic gas removal membrane and the gas permeable membrane are in the form of a sheet and are combined with each other at at least a partial edge to form a joint edge. Forming an accommodating space inside the corresponding surface of the catalytic gas removal membrane and the gas permeable membrane, wherein: the catalytic gas removal membrane adsorbs or removes ethylene gas; and the gas permeable membrane comprises a plurality of micropores, the micropores being at least transparent Oxygen, carbon dioxide and moisture.

Wherein, the gas permeable membrane is a non-woven fabric, a microporous membrane or a gas permeable membrane.

The gas permeable membrane may also be a laminating paper, and the micropores are formed on the gas permeable membrane by needle sticking.

Wherein, the catalytic gas removal film is a film formed by adding a material for removing ethylene gas to a polyolefin or a polyester plastic.

Wherein, the polyolefin plastic comprises polyethylene, polypropylene or polystyrene; the polyester plastic comprises polylactic acid or polyethylene terephthalate.

Wherein, the ethylene gas removal material comprises potassium permanganate, potassium bromide or bromide water.

Wherein, the catalytic gas removal film or the gas permeable membrane further forms a plurality of holes by pinning.

The gas permeable membrane is permeable to oxygen, carbon dioxide and moisture, so that the oxygen concentration in the accommodating space is between 1 and 20 vt%, the carbon dioxide concentration is between 0.04 and 12 vt%, and the relative humidity is above 80%.

As can be seen from the above description, the present invention has the following advantages:

1. The novel type is a gas-permeable type vegetable and fruit fresh-keeping bag, which has a catalytic gas removing membrane capable of removing catalytic gas and a gas permeable membrane transparent to oxygen, carbon dioxide and water gas, and can moderately adjust the environment inside the bag body. To achieve dynamic gas exchange, it can maintain a low-oxygen, high-carbon dioxide concentration in the bag for a long time to preserve and preserve the environment of fruits and vegetables, and is a multi-functional fresh-keeping packaging material.

2. The new type can be provided with a plurality of holes by means of needle sticking, so that the water accumulated in the bag can be quickly discharged, which can avoid the problem that the packaged fruits and vegetables are in a high humidity environment, and a large amount of water accumulated in the bag will soak the vegetables and fruits.

10‧‧‧ gas-permeable vegetable and fruit storage bags

11‧‧‧ Catalytic gas removal membrane

12‧‧‧ gas permeable membrane

121‧‧‧Microporosity

122‧‧‧ holes

13‧‧‧ combined side

14‧‧‧ accommodating space

20‧‧‧Apple

Figure 1 is a schematic view of a first preferred embodiment of the present invention.

Figure 2 is a partial cross-sectional view showing the gas permeable membrane of the first preferred embodiment of the present invention.

Figure 3 shows a perspective view of the new type.

Figure 4 is a partial cross-sectional view taken along line A-A of Figure 3 of the present invention.

Figure 5 is a partial schematic view of a second preferred embodiment of the present invention.

Figure 6 is a test chart of the ethylene gas removal rate of the present invention.

Referring to FIG. 1 to FIG. 2, a first preferred embodiment of a gas-permeable type vegetable and fruit fresh-keeping bag 10 includes a catalytic gas removal film 11 and a gas permeable membrane 12, and the catalytic gas removal membrane 11 is connected to the gas. The permeable membrane 12 is in the form of a sheet and is joined to each other at a partial edge to form a joint edge 13 , and an accommodating space 14 is formed inside the corresponding surface of the catalytic gas removal membrane 11 and the gas permeable membrane 12 .

The catalytic gas removal membrane 11 of the present invention has the function of adsorbing or removing the packaged fruits and vegetables, which spontaneously generates a catalytic gas, such as ethylene gas, and the catalytic gas removal membrane 11 preferably adds a material capable of removing the catalytic gas to a plastic. The formed film may be, for example, a polyolefin plastic or a polyester plastic, and the polyolefin plastic comprises polyethylene (Polyethylene, PE), polypropylene (PP) or polystyrene (PS). The polyester plastic comprises polylactic acid (PLA) or polyethylene terephthalate (PET), and the material for removing the catalytic gas may be, for example, potassium permanganate, potassium bromide or bromine. The gas permeable membrane 12 has a plurality of micropores 121 capable of permeating oxygen, carbon dioxide and moisture, and may be a non-woven fabric, a microporous membrane or a gas permeable membrane, or may be a general coated paper for subsequent processing. Means, for example, needle sticking, form the micro-pores 121 thereon.

The method of melting the catalytic gas removal membrane 11 and the gas permeation membrane 12 is preferably a method in which the catalytic gas removal membrane 11 and the gas permeation membrane 12 are superimposed and then cut by a heated cutter. The cutting is formed, and the heated cutting blade is cut, and the catalytic gas removing film 11 is melted and combined with the cutting edge of the gas permeable membrane 12 to form the bonding edge 13 because of the high temperature relationship. The bonding edge 13 may be formed by ultrasonic waves, high frequency waves, or the like.

Referring to FIG. 3 to FIG. 4 , when the present invention is used for packaging fruits and vegetables, such as an apple 20 , the catalytic gas removal film 11 continuously removes the ethylene catalytic gas released by the apple 20 to reduce excessive ripening of the apple, and the gas permeable membrane 12 can be transparent to oxygen, carbon dioxide and moisture, so that the accommodation space 14 and the outside to achieve dynamic gas exchange. The so-called dynamic gas exchange of this new type is due to the fact that after harvesting vegetables and fruits from plants, they will change from the original photosynthesis to consume oxygen (O ₂ ) and produce carbon dioxide (CO ₂ ) respiration. Stored at a relatively low oxygen concentration and a relatively high carbon dioxide concentration, such as about 1 to 20 vt%, compared to a normal atmosphere (21 volume percent (vt%) of oxygen and 0.03 vt% of carbon dioxide). With a high concentration of carbon dioxide environment of about 0.04~12vt%, the oxygen concentration should not be lower than 1vt% to avoid the hypoxia and apoptosis of fruits and vegetables in the bag, and maintain the relative humidity above 80%, more preferably over 90%. Even with a relative humidity of 98%, the skin of the fruits and vegetables packaged inside the novel is kept moist and abundance, and has a better selling phase to achieve superior preservation conditions, and the gas permeable membrane 12 of the present invention It has the characteristics of moisture and permeability. Even if the relative humidity of the bag is more than 80%, it will not produce water droplets or accumulate too much water, which can avoid the problem of soaking and rot of the packaged fruits and vegetables.

The gas permeable membrane 12 of the present invention can be ventilated, and based on the concentration balance, oxygen in the external environment can be appropriately introduced into the accommodating space 14 to supplement the oxygen concentration consumed by the apple 30, so that the interior of the novel The oxygen concentration of the environment is between 1 and 20 vt%, and at the same time, carbon dioxide is permeated, and the concentration of carbon dioxide in the accommodating space 14 is maintained at a high concentration of 0.04 to 12 vt% for a long time. Moreover, the fruits and vegetables or the environment cause the moisture generated in the bag to be quickly discharged, and the accommodating space 14 is generated to generate a gas environment favorable for maintaining the freshness of the fruits and vegetables.

Referring to FIG. 5, in the second preferred embodiment of the present invention, the catalytic gas removal membrane 11 and/or the gas permeable membrane 12 of the first embodiment are formed in a plurality of holes 122 by needle sticking. The purpose of the hole 122 is that when the external environment humidity is too high, and the water and gas are quickly and massively accumulated in the accommodating space 14, the hole 122 can assist the novel to quickly discharge excessive moisture and avoid packaging fruits and vegetables. As water and gas accumulate, it is like burning fruit and vegetables in water to accelerate corruption.

Please refer to Figure 6 and Table 1 below for the effectiveness of the new removal/removal of ethylene gas. The test standard was FTTS-FA-018, and the test samples were placed in a closed space, and 100 ppm of ethylene catalytic gas was injected, and the amount of ethylene gas removed was measured after 24 hours and 48 hours. Among them, the control groups 1 to 3 are polyethylene (PE), polyolefin resin (POF), polypropylene (CPP) plastic, that is, do not contain general plastics that can adsorb or remove ethylene materials, while the new model takes two test samples. One is fresh sample A within one month from production to testing, and the other is stored sample B that has been preserved for one year from production to testing. As can be seen from Fig. 6, the two samples of the present invention have superior ethylene gas removal effect compared with the general plastic, and can greatly reduce the spontaneous ethylene gas of the fruits and vegetables and increase the fresh-keeping efficiency.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes or modifications that are not departing from the spirit of the present invention should be included in the claims of the present invention. Within the scope.

10‧‧‧ gas-liquid transparent fruit and vegetable storage bags

11‧‧‧ Catalytic gas removal membrane

12‧‧‧ gas permeable membrane

13‧‧‧ combined side

14‧‧‧ accommodating space

Claims (8)

A gas-permeable type vegetable and fruit fresh-keeping bag comprising a catalytic gas removal film and a gas permeable membrane, the catalytic gas removal membrane and the gas permeable membrane being in the form of a sheet and being combined with each other at at least a partial edge to form a joint edge Forming an accommodating space inside the corresponding surface of the catalytic gas removing membrane and the gas permeable membrane, wherein: the catalytic gas removing membrane adsorbs or removes ethylene gas; and the gas permeable membrane comprises a plurality of micropores, the micropores being at least transparent to oxygen , carbon dioxide and moisture. For example, the gas-permeable type vegetable and fruit storage bag of the first application of the patent scope is a non-woven fabric, a microporous membrane or a gas permeable membrane. For example, in the gas-permeable type vegetable and fruit storage bag of the first aspect of the patent application, the gas permeable membrane is a coated paper, and the micropores are formed on the gas permeable membrane by needle sticking. For example, in the gas-permeable type vegetable and fruit storage bag of the first application of the patent scope, the catalytic gas removal film is a film formed by removing a vinyl gas material from a polyolefin or a polyester plastic. A gas-permeable type vegetable and fruit storage bag according to claim 4, wherein the polyolefin-based plastic comprises polyethylene, polypropylene or polystyrene; and the polyester-based plastic comprises polylactic acid or polyethylene terephthalate . For example, in the gas-permeable type vegetable and fruit storage bag of claim 1, the ethylene-removing material comprises potassium permanganate, potassium bromide or bromide water. For example, in the gas-permeable type vegetable and fruit storage bag of claim 1 or 2, the catalytic gas removal film or the gas permeation film further forms a plurality of holes by pinning. For example, the gas-permeable type vegetable and fruit storage bag of the first application patent scope, the gas permeable membrane is transparent to oxygen, carbon dioxide and moisture, so that the oxygen concentration in the accommodating space is between 1 and 20 vt%, and the carbon dioxide concentration is between 0.04. ~12vt% and relative humidity above 80%.