TWI663106B - Slider ziplock structure and air-tight package structure - Google Patents

Abstract

A slip chain structure includes two flexible carriers, at least one first chain assembly, at least one second chain assembly, and a chain head. The two flexible carriers are arranged side by side and have two inner surfaces close to each other and two outer surfaces far from each other. The at least one first zipper assembly and the at least one second zipper assembly are respectively disposed on two inner surfaces of the two flexible carriers. The clamping head clamps a partial region of the at least one first clamping chain component and a partial region of the second at least one second clamping chain component. The clamping head is adapted to slide back and forth to open or close at least one first clamping chain component, and during the reciprocating sliding of the clamping head, at least one second clamping chain component held by the clamping head is maintained constantly closed. The invention further provides an air-tight packaging structure.

Description

Slip chain structure and airtight packaging structure

The invention relates to a slip chain structure and an air-tight packaging structure, and in particular to a slip chain structure and an air-tight packaging structure having a good joint effect and a sealing effect.

Currently, wafers are placed in wafer handling boxes for transfer. Generally, the wafer handling box is placed in a large plastic bag before being transferred, and is sealed by a sealing machine to seal the wafer handling box in the plastic bag. However, the sealing condition of the plastic bag may be affected by the ambient temperature and humidity at the time of sealing, and the plastic bag may not be completely sealed. In addition, the operator needs to destroy the plastic bag to remove the wafer handling box from the plastic bag, so that the plastic bag can be used only once, resulting in a waste of resources and costs. In addition, during the process of transferring the wafer handling box, the wafer handling box will inevitably face vibration or shaking, which may affect the yield of the wafers in the wafer handling box and even cause wafer breakage.

A slip chain structure of the present invention includes two flexible carriers, at least one first clip chain component, at least one second clip chain component, and a clip head. The two flexible carriers are arranged side by side and have two inner surfaces close to each other and two outer surfaces far from each other. At least one first clip assembly is disposed on both inner surfaces of the two flexible carriers. At least one second clip assembly is disposed on both inner surfaces of the two flexible carriers. The clamping head clamps a partial region of the at least one first clamping chain component and a partial region of the second at least one second clamping chain component. The clamping head is adapted to slide back and forth to open or close at least one first clamping chain component, and during the reciprocating sliding of the clamping head, at least one second clamping chain component held by the clamping head is maintained constantly closed.

An air-tight packaging structure of the present invention includes a bag body, at least one first zipper assembly, at least one second zipper assembly, and a zipper head. The bag body has a bag mouth and an accommodation space, and the bag mouth is located on one side of the accommodation space. The first chain assembly is disposed on the inner surface of the bag body adjacent to the mouth of the bag. The second clip chain component is disposed on the inner surface of the bag body adjacent to the bag mouth, and the second clip chain component is located between the first clip chain component and the receiving space. The clamp head clamps a part of the first clamp assembly and a part of the second clamp assembly. The clamp head is adapted to slide back and forth along the mouth of the bag to open or close the first clamp assembly. During the reciprocating sliding movement along the mouth of the bag, the second clamp chain assembly held by the clamp head is kept constantly closed.

100‧‧‧airtight packaging structure

110‧‧‧ bag body

111‧‧‧ bag mouth

112‧‧‧accommodating space

113‧‧‧ flexible carrier

114‧‧‧Inner surface

115‧‧‧ outer surface

120‧‧‧The first clip chain assembly

122, 124‧‧‧ hook strip

130‧‧‧Second clip assembly

132‧‧‧ hooking ribs

134‧‧‧ hook groove

140‧‧‧clamp head

141‧‧‧Receiving trough

142‧‧‧ inside top surface

143‧‧‧Inner wall surface

144‧‧‧Guide groove

145‧‧‧Separator

150‧‧‧Guide rib

160‧‧‧Sealed area

162‧‧‧stop

170‧‧‧ buffer box

FIG. 1 is a schematic diagram of an airtight packaging structure according to an embodiment of the present invention. Illustration.

FIG. 2 is a partial schematic diagram of the bag body, the first clip chain assembly, and the second clip chain assembly of the airtight packaging structure of FIG. 1.

FIG. 3 is a schematic partial cross-sectional view of the air-tight packaging structure of FIG. 1 along line A-A.

Fig. 4 is a schematic partial cross-sectional view of the air-tight packaging structure of Fig. 1 along a line B-B.

5 is a schematic cross-sectional view of the clip head of the air-tight packaging structure of FIG. 1 along a line C-C.

FIG. 6 is a partial schematic diagram of the airtight packaging structure of FIG. 1.

The following disclosure provides many different embodiments or examples for implementing different features of the provided subject matter. Specific examples of components and configurations are described below to simplify the present invention. Of course, these components and configurations are merely examples and are not intended to be limiting. For example, in the following description, the formation of the first feature above or on the second feature may include embodiments in which the first feature and the second feature are formed in direct contact, and may also include additional features that may be formed between the first feature and the second feature. An embodiment is formed between the second features so that the first feature and the second feature may not be in direct contact. In addition, the present invention may repeat graphical element symbols and / or letters in various examples. This repetition is for simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

In addition, for ease of description, spatial relatives such as "below", "below", "lower", "above", "upper", and the like may be used in this article. Technique To describe the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientations depicted in the figures, spatially relative terms are intended to encompass different orientations of the device in use or operation. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may be interpreted accordingly.

FIG. 1 is a schematic diagram of an airtight packaging structure according to an embodiment of the present invention. Referring to FIG. 1, the airtight packaging structure 100 of this embodiment includes a bag body 110, a slide chain structure for sealing the bag body 110, and a buffer box 170 fixed to the bag body 110 and used to provide a buffer function. The air-tight packaging structure 100 of this embodiment can be used as a packaging structure for a wafer carrying box (not shown), which can relatively simply and quickly seal the wafer carrying box in an air-tight grade, and can be repeated. use. In addition, the airtight packaging structure 100 of this embodiment can also provide a multi-sided buffering effect of the wafer handling box, and effectively reduce the impact of vibration on the wafers in the wafer handling box.

Of course, the application of the air-tight packaging structure 100 is not limited thereto, and any component that needs to be sealed can be packed through the air-tight packaging structure 100 of this embodiment to achieve a sealing effect. In addition, although in this embodiment, the slip chain structure that can be opened and closed and normally closed through the clip head 140 is applied to the airtight packaging structure 100, the above slip chain structure can also be arranged on any two flexible carriers side by side. 113 (labeled in FIG. 2, the material of the flexible carrier 113 is, for example, a polymer, but is not limited thereto).

The airtight packaging structure 100 will be described in detail below. As shown in FIG. 1, the bag body 110 includes a bag opening 111 and an accommodating space 112. The bag opening 111 communicates with the accommodating space 112 and is located on one side of the accommodating space 112 (for example, on the upper side in FIG. 1). In this embodiment Here, the bag body 110 is a plastic bag as an example, but the bag body 110 may be any flexible carrier 113, and the material or type of the bag body 110 is not limited thereto. In this embodiment, when the bag opening 111 is stretched, the size of the bag opening 111 can be close to the length and width of the buffer box 170, so that the operator can put the wafer handling box into the bag body 110 and store it in the buffer. Box 170. As shown in FIG. 1, when the bag opening 111 is closed, the edge of the bag opening 111 will be straight, and the slide chain structure is arranged on the bag body 110 near the bag opening 111.

FIG. 2 is a partial schematic diagram of the bag body, the first clip chain assembly, and the second clip chain assembly of the airtight packaging structure of FIG. 1. FIG. 2 mainly illustrates the partial structure of the inner surface 114 and the outer surface 115 of the bag body 110 of FIG. 1 near the bag mouth 111. Please refer to FIG. 1 and FIG. 2 at the same time. In this embodiment, the airtight packaging structure 100 further includes at least one first zipper assembly 120, at least one second zipper assembly 130, and a zipper head 140 (labeled in FIG. 1). .

In the present embodiment, the air-tight packaging structure 100 is based on two first clip-chain components 120 and one second clip-chain component 130 as an example. Of course, the quantity relationship between the first zipper assembly 120 and the second zipper assembly 130 is not limited thereto. In other embodiments, the combination of a single first chain assembly 120 and a single second chain assembly 130, the combination of a single first chain assembly 120 and two second chain assemblies 130, or The matching of the plurality of first zipper assemblies 120 and the plurality of second zipper assemblies 130.

In this embodiment, the two first clip-chain components 120 are disposed adjacent to the bag opening 111 on the two inner surfaces 114 of the bag body 110 (that is, the two flexible carriers 113). The second chain assembly 130 is disposed adjacent to the bag opening 111 on the two inner surfaces 114 of the bag body 110 (two flexible carriers 113), and the second chain assembly 130 is located on the first chain assembly 120 And the receiving space 112 (labeled in FIG. 1). In other words, the first zipper assembly 120 is closer to the bag opening 111 than the second zipper assembly 130. In other words, as shown in FIG. 2, the bag opening 111 is located above, and the first zipper assembly 120 is positioned higher than the second zipper assembly 130.

Each first chain assembly 120 includes two corresponding hook strips 122 and 124. More specifically, each first clip assembly 120 includes a hook bar 122 hooked toward the upper side of FIG. 2 and a hook bar 124 hooked toward the lower side of FIG. 2. The second clip assembly 130 includes corresponding hooking ribs 132 and hooking grooves 134. The hooking ribs 132 can be embedded in the hooking grooves 134. Of course, the forms of the first zipper assembly 120 and the second zipper assembly 130 are not limited thereto. In other embodiments, the first clip assembly 120 and the second clip assembly 130 may also be in the form of hooking ribs 132 and hook recesses 134, or the first clip assembly 120 and the second clip The components 130 may also be in the form of hook strips 122, 124. Alternatively, the first zipper chain assembly 120 and the second zipper chain assembly 130 may be other hooking forms other than the foregoing.

In this embodiment, the clip head 140 is adapted to slide back and forth along the bag opening 111 to open or close the first clip assembly 120. It can be seen in FIG. 1 that if the clamp head 140 moves along the edge of the pocket opening 111 to the left of FIG. 1, the first clamp chain assembly 120 is opened, and if the clamp head 140 moves along the edge of the pocket opening 111 The rightward movement in FIG. 1 causes the first chain assembly 120 to close. Therefore, if the cross section of the A-A line segment and the cross section of the B-B line segment in FIG. 1 can be seen respectively, the closed and opened states of the first chain assembly 120 are shown. In this embodiment, during the reciprocating sliding movement of the clamp head 140 along the bag opening 111, the second clamp assembly 130 held by the clamp head 140 is kept closed to ensure air tightness. The air tightness of the packaging structure 100. This is explained further below.

FIG. 3 is a schematic partial cross-sectional view of the air-tight packaging structure of FIG. 1 along line A-A. Please refer to FIG. 1 and FIG. 3 at the same time. In this embodiment, the clamping head 140 clamps a part of the bag body 110 close to the bag mouth 111. More specifically, the clamping head 140 clamps the first clamping chain. A partial area of the assembly 120 and a partial area of the second zipper assembly 130. As can be clearly seen in FIG. 3, the clip head 140 includes an inner top surface 142, two opposing inner wall surfaces 143, an accommodation groove 141 surrounded by the inner top surface 142 and the two inner wall surfaces 143, and protruding from the inner top. The separating member 145 of the surface 142 and two guiding grooves 144 recessed on the two inner wall surfaces 143. Part of the bag body 110 (two flexible carriers 113), two partial areas of the two first clip chain assemblies 120, and partial areas of the second clip chain assembly 130 are located in the receiving groove 141.

In this embodiment, in order to guide the portion of the clip head 140 close to the bag opening 111 relative to the bag body 110 in the left-right direction, and the clip head 140 can be stably fixed near the bag body 110 in the vertical direction. It is located at the position of the bag opening 111 without rising upward. As can be seen from FIG. 2, the airtight packaging structure 100 further includes a guide rib 150, which is disposed on the outer surface 115 of the bag body 110 (that is, the flexible carrier 113) and is parallel. In the extending direction of the first and second fastener chain assemblies 120 and 130, two guide ribs 150 are respectively located in two guide grooves 144 of the fastener chain head 140 to guide the fastener chain head 140 relative to the bag body. 110 (flexible carrier 113) slides along the guide rib 150, and has the effect of restricting the movement in the up-down direction, so that the clip head 140 does not easily separate from the portion of the bag body 110 near the bag mouth 111 in the up-down direction . In addition, it can be seen in FIG. 3 that the two inner wall surfaces 143 of the clip head 140 are convex toward each other at a lower portion to support the second clip. The arrangement below the chain assembly 130 can also prevent the clip head 140 from coming out of the bag body 110.

As shown in FIG. 3, in this embodiment, the two first clamping chain assemblies 120 are located above the guide ribs 150, and the two inner wall surfaces 143 of the clamping head 140 are at positions where the two first clamping chain assemblies 120 are located. The distance between them is close to the thickness of the two hooking strips 122 and 124 of the two flexible carriers 113 and each of the first clamping chain assemblies 120, so that the two inner wall surfaces 143 of the clamping head 140 are at the two first clampings. The position where the chain assembly 120 is located will contact the outer surface 115 of the bag body 110 (flexible carrier 113), and the two first clamp chain assemblies 120 are pressed, and the two hook strips 122, 124 of each first clamp chain assembly 120 are thus embedded. Fit into each other.

In addition, in this embodiment, the second chain link assembly 130 is located below the guide rib 150, and the distance between the two inner wall surfaces 143 of the chain link head 140 at the position where the second chain link assembly 130 is located is also close. The thicknesses of the hooking ribs 132 and the hooking grooves on the two flexible carriers 113 and the second chain link assembly 130 after being hooked, so that the two inner wall surfaces 143 of the chain link head 140 are located on the second chain link assembly 130. The position of the position will also contact the outer surface 115 of the bag body 110 (flexible carrier 113), and press the second clamp chain assembly 130. The hooking ribs 132 and the hook grooves of the second clamp chain assembly 130 thus hook Together. At this time, since the two first zipper assemblies 120 and the second zipper assembly 130 are sealed, the design of the three zipper chains can make the bag body 110 have a good airtight effect.

Fig. 4 is a schematic partial cross-sectional view of the air-tight packaging structure of Fig. 1 along a line B-B. Please refer to FIG. 4. The main difference between FIG. 4 and FIG. 3 is that the width of the separating member 145 in FIG. 4 becomes larger, and the two inner wall surfaces 143 of the clip head 140 are on two first clip components. The distance between the parts where 120 is located also increases. The wider separating member 145 will pull away the two flexible carriers 113, and the two hooking strips 122, 124 of each first chain assembly 120 will be pulled apart. In addition, the distance between the two inner wall surfaces 143 at the location where the two first chain assembly 120 is located (for example, the distance between the two inner wall surfaces 143 is reduced by reducing the wall thickness of the chain head 140 at this location. (Enlarged), so that the two flexible carriers 113 and the hook strips 122 and 124 that are pulled apart can move in a direction away from each other.

5 is a schematic cross-sectional view of the clip head of the air-tight packaging structure of FIG. 1 along a line C-C. FIG. 5 mainly shows the state after the separator 145 of the clip head 140 is cross-sectioned. Referring to FIG. 5, the separating member 145 has a change in width along a length direction of the clip head 140. Please refer to FIG. 3 and FIG. 5. The width of the separating member 145 at the smaller width will be smaller than the total width of the two hooking strips 122 and 124 of the first clamping chain assembly 120. Please match FIG. 4 and FIG. 5 again. The width of the separating member 145 at the larger portion will be larger than the total width of the two hooking strips 122 and 124 of each first chain assembly 120 when they are hooked, so as to separate them. The two pieces of the flexible carrier 113 are pulled apart by the piece 145, and the two hook strips 122 and 124 of the first clamp chain assembly 120 are pulled apart.

It is worth mentioning that in the cross section of the BB line segment in FIG. 4, the distance between the two inner wall surfaces 143 of the clip head 140 at the position where the second clip assembly 130 is located is substantially the same as that in the AA line segment in FIG. 3. The distance between the two inner wall surfaces 143 of the clip head 140 in the cross section at the position where the second clip assembly 130 is located. That is to say, in FIG. 4, when the two hook strips 122 and 124 of the first clamp chain assembly 120 are pulled apart, the two inner wall surfaces 143 of the clamp head 140 will still be at the positions where the second clamp chain assembly 130 is located. Continue to contact the outer surfaces of the two flexible carriers 113 to make the second chain assembly 130 The hooking rib 132 remains hooked with the hooking groove. Alternatively, in other embodiments, the distance between the second chain assembly 130 and the separating member 145 may be sufficiently long, so that the operation of the separating member 145 does not affect the second chain assembly 130. In this way, even if the airtight packaging structure 100 slides the clamp head 140 due to vibration during transportation or a person pulls the clamp head 140 by mistake, only the first clamp assembly 120 will be opened and the second clamp chain will be opened. The module 130 can be kept closed, while still maintaining the airtight state inside the bag body 110.

In this embodiment, the distance between the guide rib 150 and the pocket opening 111 is greater than the distance between any one of the first chain assembly 120 and the bag opening 111, and the distance between the guide rib 150 and the pocket opening 111 The distance will be smaller than the distance between the second zipper assembly 130 and the bag opening 111. In other words, if the guiding ribs 150 are projected onto the inner surface 114 of the bag body 110, the guiding ribs 150 are positioned between the first clamping chain assembly 120 and the second clamping chain assembly 130. Of course, in other embodiments, the distance between the guide rib 150 and the pocket opening 111 may be greater than the distance between the second clip assembly 130 and the pocket opening 111. The distance relationship between the guide rib 150, the first clip chain assembly 120, the second clip chain assembly 130, and the pocket opening 111 is not limited thereto.

FIG. 6 is a partial schematic diagram of the airtight packaging structure of FIG. 1. It should be noted that FIG. 6 deliberately omitted the area in the middle of the bag opening 111 to clearly show the design of the two ends of the bag opening 111. In addition, in order to show the relative position between the clip head 140 and the bag mouth when sliding to the leftmost and rightmost ends, the clip head 140 is intentionally drawn to the upper part of FIG. 6, and both ends of the bag mouth 111 are exposed outside. In fact, the clip head 140 will be clamped at the bag opening 111 as shown in FIG.

Please refer to FIG. 6, in order to further increase the air-tightness effect of the air-tight packaging structure 100, the probability of air leakage occurring when the tail end of the bag mouth 111 is not closed when the clamp head 140 is pulled to the closing direction to the bottom is reduced. In this embodiment, portions of the first and second fastener chain assemblies 120 and 130 at opposite ends are sealed together with corresponding portions of the bag body 110 to form two sealing regions 160. More specifically, one end of the hook strip 122 of each first chain assembly 120 is sealed to one end of the hook strip 124, and the other end of the hook strip 122 is sealed to the other end of the hook strip 124, and the first One end of the hooking rib 132 of the two clip assembly 130 is sealed to one end of the hooking groove 134, and the other end of the hooking rib 132 is sealed to the other end of the hooking groove 134. Therefore, when the clamping head 140 is pulled to the closing direction to the bottom, a part of the clamping head 140 (for example, the widest part of the separator 145 of the clamping head 140) can be pulled to the sealing area 160, and partially overlaps the sealing area. 160 to ensure that the two first zipper assemblies 120 and the second zipper assembly 130 where the tail end of the bag mouth 111 is connected with the sealing area 160 can be closed by being pressed by the two inner wall surfaces 143 of the zipper head 140 to avoid air leakage.

In this embodiment, the length of each sealing region 160 is greater than half the length of the clip head 140. In other embodiments, the length of the sealing region 160 may be equal to or less than half the length of the clip head 140. As long as the clamp head 140 is pulled to the closing direction to the bottom, the two first clamp chain components 120 and the second clamp chain component 130 at the tail end of the bag mouth 111 can be pressed and closed by the two inner wall surfaces 143 of the clamp head 140.

In addition, in this embodiment, the air-tight packaging structure 100 further includes two stop portions 162, which are disposed outside the two sealing areas 160 and are far away from each other. As can be seen from FIG. 1, the thickness of the stop portion 162 is relatively large. In this embodiment, the thickness of the stop portion 162 It will be larger than the average width of the accommodating grooves 141 of the clip head 140, and therefore, the clip head 140 will be blocked by the stop portion 162 without sliding out of the bag body 110. The two stop portions 162 at the two ends of the bag opening 111 can limit the sliding range of the clip head 140.

It is worth mentioning that when the airtight packaging structure 100 of this embodiment is used to seal the wafer handling box, the operator only needs to place the wafer handling box in the airtight packaging structure 100 of this embodiment and chain the clips. The head 140 is pulled to the position in the closing direction, and the two first clamping chain assemblies 120 and the second clamping chain assembly 130 can be closed to achieve airtightness, which is very convenient in operation and saves process and labor costs. In addition, even if the clamp head 140 slides due to vibration or a person accidentally pulls the clamp head 140 during transportation, only the first clamp link assembly 120 will be opened, and the second clamp link assembly 130 can be kept closed, and still The inside of the bag body 110 can be kept airtight. If the wafer handling box needs to be taken out of the airtight packaging structure 100, the operator only needs to first pull the clamping head 140 to the opening direction and then force the bag body 110 to open, and the second clamping chain assembly 130 can Unhook. The airtight packaging structure 100 of this embodiment can be reused, and has economic and environmental benefits.

In addition, it can be clearly seen from FIG. 1 that the bag body 110 of the air-tight packaging structure 100 of this embodiment is fixed in the buffer box 170. The buffer tank 170 is, for example, an air column box composed of an air column. The air column box may be formed by surrounding a bottom surface of the air column and four sides of the air column connected to the bottom surface of the air column. Of course, the shape of the air column box is not limited thereto. In other embodiments, the air column box may also be cylindrical, polygonal, or irregular. In addition, in other embodiments, the material of the buffer box 170 may also be made of foam, rubber, silicone, or any combination of the above and the air column. The buffer box 170 may be a bag The wafer handling box in the body 110 provides a good buffering effect, which can effectively avoid the wafer damage or fragmentation in the wafer handling box due to vibration or shaking.

In this embodiment, the bag body 110 and the buffer box 170 may be fixed together by means of adhesion, integral injection molding, thermocompression bonding, etc. In other embodiments, the bag body 110 may be placed but not fixed to the buffer box. Such a configuration in the box 170 can also provide the effect of buffering the wafer transfer box in the bag body 110.

The foregoing outlines the features of several embodiments so that those with ordinary knowledge in the art can better understand the aspects of the present invention. Those of ordinary skill in the art will appreciate that it can readily use the present invention as a basis for designing or modifying other processes and structures for carrying out the same purposes of the embodiments introduced herein and / or achieving the same advantages. Those with ordinary knowledge in the art should also realize that such equivalent structures do not depart from the spirit and scope of the present invention, and that they can make various changes and substitutions herein without departing from the spirit and scope of the present invention. And changes.

Claims (10)

A slip chain structure includes: two flexible carriers arranged side by side, and having two inner surfaces close to each other and two outer surfaces far from each other; at least one first clip chain component arranged on the two flexible carriers On the two inner surfaces; at least one second clamping chain component disposed on the two inner surfaces of the two flexible carriers; and a clamping head that clamps a portion of the at least one first clamping chain component The area and a part of the at least one second chain assembly, the chain head is adapted to slide back and forth to open or close the at least one first chain assembly, and the chain head is in a period of reciprocating sliding, The two inner wall surfaces of the chain head continue to contact the two outer surfaces of the two flexible carriers at a position corresponding to the at least one second chain component, so that the clamped by the chain head At least one second zipper assembly is maintained constantly closed. The slip chain structure according to item 1 of the scope of patent application, further comprising: a guide rib, which is disposed on the outer surface of the flexible carrier and is parallel to the at least one first clip assembly and the at least one first In the extending direction of the two clip chain components, the clip head includes a guide groove corresponding to the guide rib. The slip chain structure according to item 1 of the scope of the patent application, wherein the opposite ends of the at least one first chain component and the at least one second chain component are formed together with the corresponding positions of the two flexible carriers. Two sealing areas, and the length of each of the sealing areas is greater than half the length of the clamping head. The slip chain structure according to item 1 of the scope of patent application, further comprising: two stop portions, which are arranged outside the two sealing areas and are far away from each other, wherein the chain head has a receiving groove, and the at least one first A partial area of a chain assembly and a partial area of the at least one second chain assembly are located in the receiving groove, and the thickness of the two stop portions is greater than the average width of the receiving groove of the chain head. Limit the sliding range of the chain head. An air-tight packaging structure includes a bag body having a bag opening and a receiving space, the bag opening being located on one side of the receiving space, and at least one first clip chain component disposed adjacent to the bag opening. On the inner surface of the bag body; at least one second clip chain component is disposed on the inner surface of the bag body adjacent to the bag mouth, the at least one second clip chain component is located on the at least one first clip Between the chain assembly and the receiving space; and a chain clamping head that clamps a partial region of the at least one first chain clamping assembly and a partial region of the at least one second clamping chain assembly, the clamping head being adapted to Reciprocating sliding along the mouth of the bag to open or close the at least one first chain assembly, and during the reciprocating sliding of the chain head along the pocket, two inner wall surfaces of the chain head A portion corresponding to the at least one second chain link component continuously contacts both outer surfaces of the two flexible carriers, so that the at least one second chain link component held by the chain link head is kept constantly closed. . The air-tight packaging structure according to item 5 of the scope of patent application, further comprising: a guide rib, which is disposed on the outer surface of the bag body and is parallel to the at least one first chain assembly and the at least one In the extending direction of the two clip chain components, the clip head includes a guide groove corresponding to the guide rib. The airtight packaging structure according to item 5 of the scope of patent application, wherein the positions of the at least one first zipper assembly and the at least one second zipper assembly at opposite ends together with the corresponding parts of the bag body form two A sealing area, and a length of each of the sealing areas is greater than half a length of the chain head. The air-tight packaging structure according to item 7 of the scope of patent application, further comprising: two blocking portions, which are arranged outside the two sealing areas and are far away from each other, wherein the clamp head has a receiving groove, and the at least one A partial area of the first chain assembly and a partial area of the at least one second chain assembly are located in the receiving groove, and the thickness of the two stop portions is greater than the average width of the receiving groove of the chain head, In order to limit the sliding range of the chain head. The airtight packaging structure according to item 5 of the scope of patent application, further comprising: a buffer box, the bag body is fixed in the buffer box. The air-tight packaging structure according to item 9 of the scope of patent application, wherein the buffer box is composed of an air column, foam, rubber, silicone, or a combination thereof.