TWI641538B - Bag fresh-keeping exhaust valve - Google Patents

Abstract

The utility model relates to a fresh-keeping exhaust valve for a packaging bag, which is a bag for sealing a dry food package, and a space existing in the package of the dry food package is squeezed outside the package bag, except that the valve piece in the valve body chamber can be used The outward movement away from the hole position and the closing action of the return position, the air in the gap is unidirectionally ventilated along the venting groove of the filling portion of the preservative device and the through hole on the partition plate, and is squeezed out from the air outlet hole of the packaging bag Outside the outside world, the air that has not been completely discharged in the packaging bag only needs to be operated by the fresh-keeping device to be inserted into the storage chamber of the valve body, and the buckle convex portion is clamped on the second card portion. In the state in which the return position is defined, the piercing needle piercing sealing film forms a hole, and the preservative in the box of the preservative can pass through the gas permeable film, and then leads from the hole in the sealing film and the ventilating groove The inside of the bag body of the bag will dehumidify or deoxidize the residual air in the bag, thereby reducing the residual air or avoiding the deterioration of the dry food, effectively extending the packaging of the dried food in the package. the term.

Description

Bag fresh-keeping exhaust valve

The invention relates to a packaging bag fresh-keeping exhaust valve which can be packaged in a packaging bag and can extend the storage period.

According to the people, the requirements for fresh-keeping of articles are getting higher and higher. Generally, in addition to freezing and refrigerating to inhibit the growth of bacteria, if air and moisture can be isolated, it is also one of the ways to prevent food from being deteriorated by moisture; Whether it is vacuum packaging or not, when the packaging bag is opened, there is no resealable structure, at most, the zipper is provided at the mouth of the bag for temporarily closing the bag mouth so that the articles in the bag can be prevented from falling out or preventing cockroaches. Or other insects enter the bag to contaminate the food, but because there is still a lot of air in the bag, the items in the bag (such as food, tea, etc.) are still susceptible to moisture deterioration; the use of such as the Republic of China Announcement No. M564875 "Package bag In the new patent case of the choke valve, a plurality of air outlet holes are arranged in the packaging bag, and a gas blocking valve is attached and fixed to the corresponding outlet of the air bag at the inner side of the packaging bag; The diaphragm of the block stop limit attaches to a plurality of air holes on the bottom surface of the chamber (gas block), the package bag is squeezed, the air is pushed up by the air hole, and the air is exhausted through the air outlet, and the pressure is formed inside and outside the bag. Poor adsorption of the membrane Covered in the air hole to prevent outside air and moisture from entering the bag; although the above-mentioned conventional choke valve can squeeze the air in the bag out of the outside by the bag extrusion method, it can also prevent outside air from entering the bag, reducing air or moisture. It has an effect on the oxidative deterioration of food. Although the bag body is squeezed by the bag alone, only most of the air in the gap of the bag can be discharged to the outside, and more or less will remain in the bag. Gas, even if it is less air, still affects the deterioration or freshness of food, and it is even difficult to grasp or anticipate the safe shelf life of food.

The main object of the present invention is to provide a packaging bag fresh-keeping exhaust valve, which is an exhaust valve, comprising a valve body, a valve plate and a fresh-keeping device; the valve body is formed by a partition to form an internal space. a valve chamber and a storage chamber; the partition plate is provided with more than one through hole, so that the valve chamber and the storage chamber communicate with each other through the through hole; the inner peripheral edge of the open end of the valve chamber is convex in the radial direction a retaining piece, and an outer peripheral edge, a radially outwardly projecting convex frame, the surface of the conforming frame is provided with a fitting surface; the receiving chamber is a slotted hole in the form of a plug hole, the inner surface of the peripheral groove wall, the diameter Surrounding the concavo-convex body, a first crotch portion and a second crotch portion are formed from the outside to the inside, and one or more piercing needles are protruded in the axial direction of the partition plate. The valve piece is assembled in the valve chamber of the valve body, and is blocked and restricted by the blocking piece to allow movement between the partition plate and the blocking piece; the fresh-keeping device is packed and assembled in the valve body. Indoor, there is a box body filled with a preservative, and the periphery of the open end is formed a step portion, the step portion is provided with a gas permeable film for restraining the preservative agent inside the box body, and a film surface is formed on the outer edge end, and the film surface is opposite to the film piercing needle on the partition plate a film is attached, and a filling surface is formed on the periphery, and the filling surface is in contact with the inner surface of the groove wall of the storage chamber, and more than one ventilation gap is formed between the groove wall, and the first surface is opposite to the first a latching portion and the second latching portion are provided with more than one latching projection, the latching projection is fastened on the first latching portion, so that the freshener is the first lane The cassette portion is defined in the accommodating chamber to allow an internal movement and press-in action toward the partition end; when the dry food is to be packaged by using a vented bag, the package is manufactured, and the valve of the vent valve is used The fitting surface of the body-fitted frame is fitted to the predetermined interior of the bag The paper surface is opposite to the air outlet hole, so that the valve chamber of the valve body can communicate with the outside through the air outlet hole of the packaging bag; thus, when the packaging bag seals the dry food packaging, the inside of the packaging bag exists for the dry food packaging. The gap, through the extrusion of the outside of the package, can be removed from the position of the through hole by the valve piece in the valve body valve chamber, and the air in the gap is unidirectionally along the filling face of the preservative device. The upper air venting slot and the through hole in the partition plate are squeezed out from the air outlet hole of the packaging bag, and the air remaining in the packaging bag which is not completely discharged and only needs to operate the freshener to the storage chamber of the valve body In the middle internal pressure insertion operation, in the state in which the snap protrusion portion is formed on the second click portion to form a return position, the through-the-needle puncture sealing film forms a hole, which can be formed by the container of the preservative device. The medium preservative can pass through the gas permeable membrane, and then from the hole in the sealing film and the ventilating slot to the inside of the bag body, dehumidifying or deoxidizing the residual air in the bag, thereby reducing or avoiding residual air. Correct Dry food deterioration caused by the impact, the effective increase in the extension of the shelf life of dry food bag packaging.

A second object of the present invention is to provide a package fresh-keeping exhaust valve, wherein a filter film is attached to one end surface of the partition body of the valve body, and the filter film covers an opening at one end of the through hole. On the outside, the filter film is used to insert the powder into the storage chamber at the inner end of the packaging bag to form a stop or restriction from the through hole, so as to prevent the powder from entering the valve chamber and ensure the negative pressure inside the package. It can be effectively placed in close contact with the through hole, and the exhaust gas can be reversed for a long time.

A further object of the present invention is to provide a package fresh-keeping exhaust valve, wherein a first hook portion and a second click portion on a wall of the storage chamber of the valve body are respectively formed to surround the groove wall a concave arc-shaped annular groove having a thicker thickness, and the box body of the fresh-keeping device is filled with a buckled convex portion on the face, which is an outer convex buckle body having a shape opposite to the first and second clicks, by the buckle The convex part is buckled into the first The positioning of the axial displacement can be generated on one of the latching portions or the second latching portion, so that the device can be inserted into the retaining chamber of the storage chamber, and the latching convex portion can be clamped on the first latching portion. Retraction restriction during assembly; and when the preservative device is forced to push into the storage chamber, the buckle can be exchanged to the second card portion to form a retreat limit when the preservative in the cartridge is opened. It can achieve the effect of double-stage positioning when the preservative is used in the storage room.

Another object of the present invention is to provide a packaging bag fresh-keeping exhaust valve, wherein the diaphragm is pierced by a lancet, which is a tapered needle body, and the body is formed with more than one venting sulcus; when the puncturing needle is pierced When the over-sealing film is formed into a hole, a venting space is formed between the venting groove and the hole, so that the puncturing action of the lancet on the sealing film can ensure that the preservative in the case is effectively opened.

Still another object of the present invention is to provide a packaging bag fresh-keeping exhaust valve, wherein a gas permeable film on the box body portion of the fresh-keeping device forms a void space between the sealing film and the sealing film surface, by wearing When the film piercing needle breaks through the sealing film, the needle piercing needle passes through the tip of the sealing film and enters into the void space, and does not penetrate the gas film, thereby ensuring that the preservative in the box is sealed by the gas permeable film for a long time. leak.

A second object of the present invention is to provide a package fresh-keeping exhaust valve, wherein the fresh-keeping device is packed and assembled in a storage chamber of the valve body, and the snap protrusion of the box is clamped in the first card. Positioning on the upper part, the outer end of the bottom portion is slightly exposed to the outside of the storage compartment, so that the inner pressure of the fresh-keeping device into the storage chamber is inserted into the operation, and the outer end of the bottom of the casing can be used as a pressing operation surface, which is advantageous for The preservative in the preservative box is opened for use.

A second object of the present invention is to provide a packaging bag fresh-keeping exhaust valve, wherein the casing of the fresh-keeping device is filled with a face portion, and is formed by extending the film surface outside the body of the casing. An outer surface portion of the frame ring body, and each of the latching convex portions on the filling surface portion is formed by a pair of broken hole slots formed on the frame ring body of the filling surface portion, and is formed by the elastic piece The protruding portion is formed by the convex body, and the buckle convex portion has deformation and recovery elasticity when pressed, so that when the fresh-keeping device is assembled in the storage chamber, the buckle convex portion can be pressed and then snapped and buckled. On one of the cassette portions, the positioning during assembly is easily achieved, and during the opening operation of the preservative in the box body, the position of the snap tab can be snapped and buckled to the position of the second card portion. The effect of preservatives on labor-saving operation.

10‧‧‧Exhaust valve

20‧‧‧ valve body

21‧‧‧Baffle

210‧‧‧through hole

22‧‧‧ valve room

220‧‧ ‧Flap

221‧‧‧Fitting border

222‧‧‧Fitting surface

23‧‧‧ Storage room

230‧‧‧ First card department

231‧‧‧Second Card Department

24‧‧‧through the needle

240‧‧‧ Breathable slot

25‧‧‧Filter film

30‧‧‧ Valves

40‧‧‧ Preservative

41‧‧‧Box

42‧‧ ‧Class Department

43‧‧‧ film surface

44‧‧‧ stuffing the face

45‧‧‧ Breathable slot

46‧‧‧Snap convex

47‧‧‧ void space

48‧‧‧Box body

480‧‧‧Drilled slot

49‧‧‧Shrap

50‧‧‧preservative

60‧‧‧ breathable film

70‧‧‧Seal film

71‧‧‧ hole

80‧‧‧Package

81‧‧‧ Vents

Figure 1 is an exploded perspective view of the structure of the present invention

Figure 2 is an enlarged schematic view of the structure of Figure 1A

Figure 3 is a perspective view of the combined appearance of the present invention

Figure 4 is a cross-sectional view of the combined structure of the present invention

Figure 5 is a state diagram of the exhaust gas of the present invention.

Figure 6 is a schematic view showing the state of the present invention when the preservative is opened

Figure 7 is an enlarged schematic view showing the inside of the packaging bag of the preservative of Figure 6B.

The present invention is directed to the above object, and the preferred embodiment, together with the drawings, is described in detail as follows: a packaging bag fresh-keeping exhaust valve, as shown in Figures 1, 2, 3, 4, is an exhaust valve 10 The valve body 20 includes a valve body 30 and a freshener 40. The valve body 20 is separated by a partition 21 to form a valve chamber 22 and a storage chamber 23; the partition 2 1 is provided with one or more through holes 210, such that the valve chamber 22 and the storage chamber 23 communicate with each other through the through hole 210; the inner peripheral edge of the open end of the valve chamber 22 has a plurality of blocking pieces 220 protruding in the radial direction. The outer peripheral edge of the outer peripheral edge has a fitting frame 221, and a surface of the abutting frame 221 is provided with a fitting surface 222. The receiving chamber 23 is a slot hole in the form of a plug hole, and the inner surface of the peripheral groove wall. The radial concavo-convex shape is surrounded by the first and second latching portions 230 and 231, and the partitioning plate 21 is formed in the partitioning chamber 23 and protrudes axially. The above-mentioned puncturing needle 24 is assembled in the valve chamber 22 of the valve body 20, and is blocked and restricted by the blocking piece 220, allowing movement between the partitioning plate 21 and the blocking piece 220. The freshener 40 is packed in the storage chamber 23 of the valve body 20 and has a casing 41 filled with a preservative 50 (for example, a desiccant or a deoxidizer) and having an open end periphery. Forming a step portion 42 to which a non-woven breathable film 60 for restraining the preservative 50 inside the case 41 is attached, and the outer edge end A film surface 43 is formed on the film surface 43 opposite to the film piercing needle 24 on the partition plate 21, and an aluminum foil sealing film 70 is attached, and a filling surface portion 44 is formed on the periphery thereof, and the filling surface portion 44 is attached thereto. The inner surface of the groove wall of the storage chamber 23 is in contact with the groove wall, and one or more ventilation notches 45 are formed between the groove and the groove, and one or more of the first groove portion 230 and the second channel portion 231 are provided. a latching projection 46 that is latched on the first latching portion 230 such that the freshener 40 is defined in the receiving compartment 23 by the first latching portion 230 (positioning) Allowing an inward pressing action toward the end of the partition 21; that is, as shown in FIG. 4, when the dry food (not shown) is to be packaged by the packaging bag 80 having the air outlet 81, the packaging 80 is manufactured. The sealing surface 222 of the valve body 20 of the exhaust valve 10 that is attached to the frame 221 is attached to the predetermined inner paper surface of the packaging bag 80, and is opposed to the air outlet 81. The valve chamber 22 of the valve body 20 can communicate with the outside through the air outlet 81 of the packaging bag 80; thus, when the packaging bag 80 is sealed to complete the dry food packaging, the gap existing inside the packaging bag 80 for the dried food package passes. Extrusion of the outside of the packaging bag 80, except that the valve piece 30 in the valve chamber 20 of the valve body 20 can be moved outwardly from the position of the through hole 210 when the air is discharged from the position of the through hole 210, and the returning position is closed when the air is not discharged. The air is ventilated along the filling surface 44 of the preservative 40 and the through hole 210 in the partition 21, and is squeezed out from the air outlet 81 of the packaging bag 80 to stop the outside air from entering the package. 80 (corresponding to the state of Fig. 4), the air remaining in the packaging bag 80 that has not been completely discharged, as shown in Figs. 6 and 7, only the freshener 40 has to be operated into the accommodating chamber 23 of the valve body 20 for internal tamping. In the (push-in) action, in a state in which the latching projection 46 moves the latch to form a return position on the second latching portion 231, the penetrating needle 24 pierces the sealing film 70 to form a hole 171, which can be borrowed. The preservative 50 in the casing 41 of the preservative 40 can pass through the gas permeable film 60 and then break from the sealing film 70. 71 and the venting notch 45 lead to the inside of the bag body (intercommunication) of the packaging bag 80, and dehumidify or deoxidize the residual air in the packaging bag 80, thereby further reducing the residual air or avoiding the deterioration of the dry food, effectively The shelf life of the packaged dry food in the package 80 is extended.

According to the above embodiment, in FIG. 1 and FIG. 4, a non-woven filter film 25 is attached to the surface of one end of the partition 21 in the valve body 20, and the film surface of the filter film 25 is covered in the through hole 210. Outside the one end opening, the fine film of the food which may enter the storage chamber 23 at the inner end of the packaging bag 80 by the filtering film 25 forms a stop or restriction extruded from the through hole 210, so that the inside of the valve chamber 22 is avoided. When the fine powder of the food enters and the negative pressure inside the packaging bag 80 is ensured, the valve sheet 30 can be effectively (not interfered by the fine powder of the food) and is affixed in one direction. The through hole 210 exerts an effect of exhausting the exhaust for a long time.

According to the above embodiment, wherein, as shown in FIG. 1 and FIG. 4, the first card portion 230 and the second ball portion 231 of the groove of the storage chamber 23 of the valve body 20 are respectively formed to be thicker around the groove wall. a concave arcuate ring groove, and the box body 41 of the preservative 40 fills the latching convex portion 46 on the face portion 44, and is a convex outer button body having a shape opposite to the first and second hook portions 230 and 231. The snap protrusion 46 can be inserted into the first click portion 230 or the second click portion 231 to generate an axial displacement positioning function, so that the assembly is inserted into the storage chamber 23 40, the buckle protrusion 46 on the stuffing surface 44 can be snapped on the first click portion 230 to form a retraction limit during assembly; as shown in FIG. 6, and when the freshener 40 is forced into the storage chamber 23, The buckle can be exchanged by the latching projection 46 to the second latching portion 231 to form a retraction of the transdermal needle 24 when the preservative 50 in the cartridge is opened, and the preservative 40 is used in the storage chamber 23 to maintain the preservative. At 50 o'clock, the effect of double-segment positioning can be achieved.

According to the above embodiment, wherein, as shown in FIG. 1 and FIG. 2, the lancet 24 is formed on the partition 21 as a tapered needle body, and more than one venting vacant groove 240 is formed in the body; as shown in FIGS. 2, 6, and 7. When the piercing needle 24 penetrates the sealing film 70 to form the hole 71, a ventilation gap is formed between the gas permeable groove 240 and the hole 71, so that the piercing action of the penetrating needle 24 on the sealing film 70 can be performed. It is ensured that the preservative 5 in the casing 41 is effectively opened.

According to the above embodiment, as shown in FIG. 4, a gas permeable film 60 on the frame portion 42 of the container 40 of the freshener 40 is formed with a gap space 47 between the sealing film 70 on the film surface 43, as shown in FIG. 7. When the sealing film 70 is pierced by the penetrating needle 24, the tip of the penetrating needle 24 passing through the sealing film 70 only enters into the void space 47, and does not pierce and damage the gas permeable film 60, thereby ensuring Preservative 50 in box 41 for a long time It is sealed by the gas permeable film 60 without damaging the leak.

According to the above embodiment, wherein the freshener 40 is packed and assembled in the accommodating chamber 23 of the valve body 20, the snap protrusion 46 of the box 41 is clamped in the first ridge portion. Positioned on the 230, the outer end of the bottom portion is slightly protruded outside the storage chamber 23, and as shown in Fig. 6, the inner pressure of the freshener 40 into the storage chamber 23 is pushed (pushed), and the casing can be The bottom outer end of the 41 serves as a pressing operation surface (outputting action surface), which facilitates the opening operation of the preservative 50 in the casing 41 of the freshener 40.

According to the above embodiment, wherein the casing 41 of the preservative 40 is filled with the face portion 44 as shown in Figs. 1, 3, and 4, a frame body 48 extending from the film surface 43 to the periphery of the body of the casing 41 is used. The outer surface portion, and each of the latching projections 46 on the caulking surface portion 44, is formed by a pair of broken hole slots 480 formed in the frame ring body 48 of the caulking surface portion 44, and the elastic piece 49 is formed by the elastic piece 49. The buckle protrusion 46 is formed by the protrusion, and the buckle protrusion 46 has deformation recovery elasticity when pressed, and as shown in FIG. 4, when the freshener 40 is assembled in the storage chamber 23, the buckle can be buckled. After the convex portion 46 is pressed, the bounce snaps on the first click portion 230, and the positioning at the time of assembly is easily achieved, as shown in FIG. 6, and during the opening operation of the preservative 50 in the casing 41, the snap protrusion can be obtained. After the internal pressure is turned on, the snapping buckle is snapped onto the second latching portion 231 to achieve the effect of the preservative 50 being labor-saving operation.

The above description is intended to be illustrative, and not restrictive, and many modifications, variations, etc. may be made without departing from the spirit and scope of the invention. Effective, but all fall within the scope of protection of the present invention.

Claims (7)

The utility model relates to a packaging bag fresh-keeping exhaust valve, which is an exhaust valve, comprising a valve body, a valve piece and a fresh-keeping device; the valve body is formed by a partition to form a valve chamber and a storage chamber; The partitioning plate is provided with more than one through hole, so that the valve chamber and the receiving chamber communicate with each other through the through hole; the inner peripheral edge of the open end of the valve chamber has a plurality of blocking pieces protruding in the radial direction, and the outer peripheral edge is The radial outer protrusion has a fitting frame, and the surface of the bonding frame is provided with a bonding surface; the storage chamber is a slot chamber in the form of a plug hole, and the inner surface of the peripheral groove wall is surrounded by a radial concave and convex body, and is surrounded by the outer surface a first click portion and a second click portion are formed on the partition, and one or more piercing needles are protruded in the axial direction of the partition, and the valve piece is assembled The valve chamber of the valve body is blocked and restricted by the blocking piece, and is allowed to move between the partition plate and the blocking piece; the fresh-keeping device is packed and assembled in the storage chamber of the valve body, and has a box body. The inside of the box is filled with a preservative, and the periphery of the open end is formed with a class portion, and the class portion is attached a preservative agent is confined to the gas permeable film inside the box body, and a film surface is formed on the outer edge end, and the film surface is attached with a film of the mouth on the film piercing needle, and the outer periphery is extended Forming a filling surface, the filling surface is in contact with the inner surface of the groove wall of the storage chamber, and more than one ventilation gap is formed between the groove wall and the first channel and the second channel The latching portion is provided with one or more latching projections, and the latching projections are fastened on the first latching portion, so that the freshener is defined in the receiving compartment by the first latching portion Allowing an internal movement and press-in operation toward the end of the partition; when the dry food is to be packaged in a packaging bag having an air outlet, the packaging bag is formed by attaching the sealing surface of the valve body of the exhaust valve to the frame The predetermined internal paper surface of the packaging bag is opposite to the air outlet hole, so that the valve chamber of the valve body can communicate with the outside through the air outlet hole of the packaging bag; thus, when the packaging bag is sealed and the dry food packaging is completed, the inside of the packaging bag is The gaps in the dry food packaging, Live Extrusion outside the bag, except that the valve piece in the valve body chamber can be moved away from the position of the through hole and the return position is closed, and the air in the gap is unidirectionally ventilated along the filling face of the preservative device. The groove and the through hole in the partition are squeezed out from the air outlet hole of the packaging bag, and the air remaining in the packaging bag which is not completely discharged and only needs to operate the freshener to the internal pressure of the storage chamber of the valve body In the insertion action, in the state in which the snap protrusion is formed on the second card portion to form a return position, the piercing needle piercing sealing film forms a hole, and the preservative in the box of the preservative device can be The air-permeable film can be used to remove dehumidification or deoxidation of the residual air in the package from the holes in the sealing film and the ventilating slot to the inside of the bag body, thereby reducing residual air or avoiding dry food. It will cause deterioration and effectively extend the shelf life of dry food packaging in packaging bags. The packaging bag fresh-keeping exhaust valve according to claim 1, wherein a filter film is attached to one end surface of the partition body of the valve body, and the filter film covers the one end opening of the through hole. On the outside, the filter film is used to insert the powder into the storage chamber at the inner end of the packaging bag to form a stop or restriction from the through hole, so as to prevent the powder from entering the valve chamber and ensure the negative pressure inside the package. It can be effectively placed in close contact with the through hole, and the exhaust gas can be reversed for a long time. According to the invention of claim 1, the first ferrule portion and the second ferrule portion of the housing wall of the valve body are respectively formed to surround the groove wall. a concave arc-shaped annular groove having a thicker thickness, and the box body of the fresh-keeping device is filled with a buckled convex portion on the face, which is an outer convex buckle body having a shape opposite to the first and second clicks, by the buckle The convex portion is buckled into the first card portion or the second card portion to generate an axial displacement positioning function, so that the device can be inserted into the storage device and can be clamped by the buckle convex portion. The withdrawal limit of the assembly is formed on one of the cassette portions; and when the preservative device is forced to push into the storage chamber, the buckle can be exchanged by the buckle convex portion to the first On the two-way card part, the retreat limit when the preservative in the box is opened is formed, and the effect of the two-stage positioning when the preservative is used in the storage room is achieved. According to the patent application scope of claim 1, the packaging bag fresh-keeping exhaust valve, wherein the diaphragm is pierced by a lancet, which is a tapered needle body, and more than one ventilated sulcus is formed in the body; When the over-sealing film is formed into a hole, a venting space is formed between the venting groove and the hole, so that the puncturing action of the lancet on the sealing film can ensure that the preservative in the case is effectively opened. The bag fresh-keeping exhaust valve according to claim 1, wherein the gas permeable film on the box body portion of the fresh-keeping device forms a void space between the sealing film and the sealing film on the film surface, by wearing When the film piercing needle breaks through the sealing film, the needle piercing needle passes through the tip of the sealing film and enters into the void space, and does not penetrate the gas film, thereby ensuring that the preservative in the box is sealed by the gas permeable film for a long time. leak. The bag fresh-keeping exhaust valve according to claim 1, wherein the fresh-keeping device is packed and assembled in the storage chamber of the valve body, and the buckle protrusion of the box is clamped in the first card portion In the upper positioning, the outer end of the bottom portion is slightly exposed to the outside of the storage compartment, so that the inner pressure of the freshener is inserted into the storage chamber, and the outer end of the bottom of the casing can be used as a pressing operation surface to facilitate preservation. The preservative in the box is opened for use. The package fresh-keeping exhaust valve according to claim 1, wherein the box body of the fresh-keeping device is filled with a face, and is an outer surface of the frame body extending from the film surface to the periphery of the body of the case. And each of the latching protrusions on the filling surface is formed by a pair of broken hole slots formed in the frame ring body of the filling surface portion, and the elastic piece is formed on the elastic piece to form the buckle. The convex portion has a deformation recovery elasticity when the buckle convex portion is pressed, and the freshener is in the storage chamber When assembled, the buckle can be snapped and buckled on the first click portion of the buckle to easily achieve the positioning during assembly, and can be moved by the buckle convex portion during the opening operation of the preservative in the cartridge body. After the button is snapped, the positioning on the second card portion is achieved, and the effect of the preservative is saved.