CN118358883A - Double-layer composite type soft packaging bag and packaging method thereof - Google Patents
Double-layer composite type soft packaging bag and packaging method thereof Download PDFInfo
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- CN118358883A CN118358883A CN202410794117.5A CN202410794117A CN118358883A CN 118358883 A CN118358883 A CN 118358883A CN 202410794117 A CN202410794117 A CN 202410794117A CN 118358883 A CN118358883 A CN 118358883A
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 57
- 238000009459 flexible packaging Methods 0.000 claims abstract description 14
- 238000003860 storage Methods 0.000 claims description 37
- 238000007789 sealing Methods 0.000 claims description 22
- 238000007639 printing Methods 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 238000004043 dyeing Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000007731 hot pressing Methods 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000012858 packaging process Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 230000005489 elastic deformation Effects 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 description 12
- 239000010410 layer Substances 0.000 description 9
- 230000001737 promoting effect Effects 0.000 description 7
- 230000006378 damage Effects 0.000 description 5
- 229920000297 Rayon Polymers 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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Abstract
The application discloses a double-layer composite flexible packaging bag and a packaging method thereof, which are applied to the field of material packaging bags.
Description
Technical Field
The application relates to the field of material packaging bags, in particular to a double-layer composite type flexible packaging bag and a packaging method thereof.
Background
The packaging bag is used for packaging and storing materials or products, and is used for packaging and storing materials or products in a wrapping and storing mode, so that the materials or products are easier to transport or store, and in the prior art, the plastic soft packaging bag has the advantages of low use cost, mature use technology, multiple designs and the like, and is widely used in packaging production of various products and materials.
In the prior art, the plastic soft packaging bag is generally in a single-layer structure to realize the packaging protection of materials in the use process, the packaging operation is carried out according to the packaging requirement of the materials, or the vacuumizing and exhausting mode is adopted, or the packaging operation is carried out in an inflatable mode, and although the packaging bags can realize the packaging of the materials in the use process, in the actual use process, the packaging bags can be broken due to the influence of friction, extrusion, needling and other conditions in the transportation process, if the packaging bags are broken, the single-layer structure is difficult to continuously protect the materials, and then the materials are scrapped, and the production information of the plastic soft packaging bag with the single-layer structure is generally directly printed on the outer surface of the packaging bags, so that the important information is easy to be illegally tampered, and the subsequent use safety of the product is influenced.
Therefore, a double-layer composite flexible packaging bag and a packaging method thereof are provided to solve some problems in the prior art.
Disclosure of Invention
The application aims to solve the problems that a single-layer packaging bag in the prior art has poor protection effect on materials in the using process and production information is easy to tamper with when printed on the outer surface;
The outside parcel of interior wrapping bag has the extranal packing bag, and the extranal packing bag is including the outer flexible bag body of fixed laminating on two interior flexible bag external surfaces, be provided with the elastic bag on the outer flexible bag body, and the inside of elastic bag is filled with nitrogen gas, through place the material in the storage chamber that constitutes between two interior flexible bag bodies, and carry out the evacuation operation to depositing the intracavity, be favorable to promoting the long-term freshness of material in this wrapping bag, simultaneously, through attaching the outer flexible bag body in the outside of the interior flexible bag body, and be provided with the elastic bag that can fill nitrogen gas on the outer flexible bag body, can build the elasticity and aerify the protection in the outside of the interior flexible bag body, reduce the risk that the interior flexible bag body breaks the gas leakage, and can effectively avoid depositing the material of intracavity portion and receive the extrusion damage, be favorable to promoting this wrapping bag to the comprehensive protectiveness after the material is packed.
Optionally, the elastic deformation capability of the material of the area corresponding to the storage cavity on the inner flexible bag body is larger than that of the material of the surrounding area.
Optionally, the outer surface of the inner flexible bag body is coated with a printing and dyeing area, and fluorescent powder is embedded in the printing and dyeing area.
Optionally, an adhesive is painted on an end wall of the outer flexible bag body, which is close to one side of the inner flexible bag body, and the outer flexible bag body is further adhered to the outer side of the inner flexible bag body through the adhesive.
Optionally, the viscose is painted around the edge of the outer flexible bag body, and an air flow channel communicated with the elastic bag is pre-buried in the middle position above the outer flexible bag body.
Optionally, the outside dimension of the elastic bag is larger than the outside dimension of the storage cavity, and a hard plastic frame fixedly connected with the outer flexible bag body is further arranged at the edge position of the elastic bag.
Optionally, the rigid plastic frames fixedly installed on the two outer flexible bag bodies are arranged to be of a front-back symmetrical structure, and permanent magnet sheets with magnetic attraction are fixedly inlaid in the two rigid plastic frames respectively.
Optionally, the outside size of the outer flexible bag body is matched with the outside size of the inner flexible bag body, the corner positions of the inner flexible bag body and the outer flexible bag body are all set to be arc structures, the outer edge positions of the inner flexible bag body and the outer flexible bag body are further fixedly surrounded by flexible wrapping edges, and the thickness of the flexible wrapping edges is larger than the sum of the thicknesses of the two inner flexible bag bodies and the two outer flexible bag bodies.
Optionally, the packaging method of the double-layer composite flexible packaging bag further comprises the following steps:
S1, attaching two inner flexible bag bodies with matched sizes back and forth, forming continuous heat sealing edges at the edge positions of three adjacent edges on the inner flexible bag bodies in a hot-pressing packaging mode, and blocking the heat sealing edges to enable the two inner flexible bag bodies attached to each other to form a bag-shaped structure, wherein one side edge of the bag body, which is not packaged with the heat sealing edges, is used as an opening;
s2, throwing the material to be packaged into a storage cavity formed between the two inner flexible bag bodies through an opening reserved between the two inner flexible bag bodies;
s3, sealing and packaging the reserved opening on the inner flexible bag body in a hot-pressing packaging mode, and pumping out air remained in the storage cavity through the opening to be sealed in the hot-pressing packaging process;
S4, coating the adhesive on the edge of the outer flexible bag body, avoiding the gel from being coated in an air flow channel reserved on the outer flexible bag body, and respectively fixing the two outer flexible bag bodies on the outer surfaces of the front inner flexible bag body and the rear inner flexible bag body in an adhesive bonding mode;
S5, filling a proper amount of nitrogen into the elastic bag through an air flow channel reserved above the outer flexible bag body, so that the elastic bag is inflated and wrapped outside the storage cavity, and then sealing the reserved air flow channel in a hot-pressing packaging mode;
S6, cutting the corner positions of the inner flexible bag body and the outer flexible bag body which are mutually attached, enabling the corners of the inner flexible bag body and the outer flexible bag body to form arc-shaped structures, and wrapping the flexible wrapping edges around the edge positions of the inner flexible bag body and the outer flexible bag body in a pasting mode.
Optionally, after S3 is finished, the production information of the materials in the storage cavity is printed on the printing and dyeing area on the outer surface of the inner flexible bag body through a label coding machine.
Compared with the prior art, the application has the advantages that:
(1) Through placing the material in the storage cavity that constitutes between two interior flexible bag bodies to carry out the evacuation operation to depositing the intracavity, be favorable to promoting the long-term fresh-keeping nature of material in this wrapping bag, simultaneously, through attaching the outside of outer flexible bag body in flexible bag body, and be provided with the elastic bag that can fill nitrogen gas on the outer flexible bag body, can construct the elasticity in the outside of interior flexible bag body and aerify the protection, reduce the risk that the flexible bag body broke down the gas leakage, and can effectively avoid depositing the material of intracavity portion and receive the extrusion damage, be favorable to promoting the comprehensive protectiveness of this wrapping bag after to the material packing.
(2) The inner flexible bag body and the material in the corresponding area of the storage cavity are made of materials with larger elastic deformation capacity, so that the deformation degree generated when the corresponding position is subjected to vacuum suction can be effectively improved, the inner flexible bag body and the material fit compactness during the vacuum suction operation are improved, and the effect of the vacuum suction operation in the storage cavity is improved to a certain extent.
(3) Through scribble the printing and dyeing district on the surface of the flexible bag body, can build the region that is used for printing material information in the flexible bag body, be favorable to promoting by guarantee material information show striking, simultaneously, through inlay fluorescent powder inside the printing and dyeing district, be favorable to further promoting the striking nature of material information show under dim environment.
(4) Through reserving the air current passageway that is linked together in the inside of elastic bag in the upper position department of outer flexible bag body, can be after the outer flexible bag body laminating flexible bag body outside in, inject proper amount nitrogen gas into the inside of elastic bag through the air current passageway, be favorable to promoting the device and construct outside elasticity and aerify the convenience of inoxidizing coating.
(5) The outer side dimension of the elastic bag is larger than that of the storage cavity, so that the inflated elastic bag can be fully wrapped on the outer side of the storage cavity, the comprehensiveness of the packaging bag for material wrapping protection inside the storage cavity is improved, meanwhile, the expansion range of the elastic bag can be limited to a certain extent by fixedly sleeving the hard plastic frame on the outer side of the elastic bag, the expansion shape of the elastic bag can be standardized to a certain extent, and convenience in subsequent stacking and use processes can be guaranteed.
(6) Permanent magnet sheets with magnetic attraction are respectively fixed and inlaid in the front-back symmetrical outer flexible bag body, and the permanent magnet sheets with the help of the magnetic attraction of the permanent magnet sheets can be used for positioning and correcting the positions of the two outer flexible bag bodies in the front-back direction in the process of pasting the outer flexible bag body on the outer side of the inner flexible bag body, so that the stable and accurate installation of the outer flexible bag body is effectively ensured.
(7) Through setting the corner position of interior flexible bag body and outer flexible bag body to convex structure, be favorable to avoiding it to exist sharp angle position and cause the injury to the user in the use, simultaneously, through the edge position department of flexible bag body and outer flexible bag body including wrapping up flexible edge around the parcel, when protecting interior flexible bag body and outer flexible bag body edge position, still can effectively encapsulate the operation once more to interior flexible bag body and outer flexible bag body, reduce again and deposit the inside probability of gas leakage that appears of chamber and elastic bag, be favorable to guaranteeing this wrapping bag stability in use.
(8) Through directly printing the production information on the printing and dyeing district after S3 finishes, in the follow-up packaging process, can make the production information encapsulation that prints on the printing and dyeing district in outer flexible bag body, after the material packing finishes, the external personnel is difficult to harmless to modify the production information, is favorable to guaranteeing the security in the follow-up use of material.
Drawings
FIG. 1 is a split view of a package of the present application;
FIG. 2 is a perspective view of the package of the present application;
FIG. 3 is a front view of the package of the present application;
FIG. 4 is a cross-sectional view at A-A in FIG. 3;
FIG. 5 is a cross-sectional view at B-B in FIG. 3;
FIG. 6 is a perspective view of the inner bag of the present application;
FIG. 7 is a split view of the inner bag of the present application;
FIG. 8 is a top view of the inner bag of the present application;
FIG. 9 is a perspective view of the material of the present application packaged in an inner bag;
Fig. 10 is a flow chart of the packaging method of the present application.
The reference numerals in the figures illustrate:
1. An inner packaging bag; 101. an inner flexible bag body; 102. heat sealing edges; 103. a storage cavity; 2. a printing area; 3. an outer packaging bag; 301. an outer flexible bag body; 302. an elastic bag; 303. a rigid plastic frame; 304. and (5) flexible edging.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present application are included in the protection scope of the present application.
Example 1:
The application discloses a double-layer composite type flexible packaging bag, referring to fig. 1-10, which comprises an inner packaging bag 1, wherein the inner packaging bag 1 comprises two inner flexible bag bodies 101 which are symmetrically attached backwards, heat sealing edges 102 are formed at the positions of the left side, the right side and the bottom side of the two inner flexible bag bodies 101 in a hot pressing and packaging mode, and a storage cavity 103 is formed at the middle position between the two inner flexible bag bodies 101 through the heat sealing edges 102;
The outside parcel of interior wrapping bag 1 has outer wrapping bag 3, and outer wrapping bag 3 is including the outer flexible bag body 301 of fixed laminating on the surface of two interior flexible bag bodies 101, is provided with the elastic bag 302 on the outer flexible bag body 301, and the inside of elastic bag 302 is filled with nitrogen gas.
When the packaging bag is used, related staff places the material to be packaged in the storage cavity 103 formed between the two inner flexible bag bodies 101, the inner flexible bag bodies 101 carry out a first-layer packaging operation on the material, when the material is positioned in the storage cavity 103, redundant air in the storage cavity 103 can be discharged in a vacuumizing mode, the packaged material is isolated from the air, the effect of material preservation and corrosion prevention is facilitated to be improved, after the outer flexible bag bodies 301 are attached to the outer sides of the inner flexible bag bodies 101, the staff can fill proper amounts of nitrogen into the inner side of the elastic bags 302, the elastic bags 302 are inflated, a certain elastic support is formed on the outer flexible bag bodies 301, a second-layer packaging operation is formed, the material is placed in the storage cavity 103 formed between the two inner flexible bag bodies 101, and vacuumizing operation is carried out in the storage cavity 103, so that the long-acting freshness of the material in the packaging bag 301 is facilitated to be improved, meanwhile, the outer sides of the inner flexible bag bodies 301 are attached to the outer side of the inner flexible bag bodies 301, the elastic bag bodies 302 can be filled with nitrogen, the elastic bag bodies 302 can be filled on the outer flexible bag bodies, the inner flexible bag bodies can be protected from being fully broken, the inner flexible bag bodies 101 can be protected from being protected, and the inner side of the inner flexible bag bodies can be protected from being fully broken, and the inner flexible bag bodies can be protected from being completely being protected, the inner flexible bag bodies can be completely being protected, and the inner bag bodies can be completely protected from being broken by the material is protected.
Referring to fig. 9, when the bag is used, the material of the inner flexible bag 101 corresponding to the storage cavity 103 is made of a material with a larger elastic deformation capacity, so that the deformation degree of the corresponding position when being subjected to vacuum suction can be effectively improved, the adhesion tightness of the inner flexible bag 101 and the material during the vacuum suction operation is improved, and the effect of the vacuum suction operation inside the storage cavity 103 is improved to a certain extent.
Referring to fig. 2 and 9, the outer surface of the inner flexible bag 101 is coated with a printing and dyeing area 2, and fluorescent powder is embedded in the printing and dyeing area 2, when the packaging bag is used, an area for printing material information can be constructed on the inner flexible bag 101 by coating the printing and dyeing area 2 on the outer surface of the inner flexible bag 101, which is favorable for improving the display of the ensured material information, and meanwhile, the fluorescent powder is embedded in the printing and dyeing area 2, which is favorable for further improving the display of the material information in a dim environment.
The outer flexible bag 301 is coated with viscose glue on the end wall of one side of the inner flexible bag 101, the outer flexible bag 301 is adhered to the outer side of the inner flexible bag 101 through the viscose glue, and when the packaging bag is used, the outer flexible bag 301 and the inner flexible bag 101 are fixedly connected through the viscose glue, so that convenience and quickness in fixing the outer flexible bag 301 and the inner flexible bag 101 are guaranteed.
Referring to fig. 1, the adhesive is painted around the edge of the outer flexible bag 301, and an air flow channel communicated with the elastic bag 302 is pre-buried in the middle position above the outer flexible bag 301, and when the packaging bag is used, by reserving the air flow channel communicated with the inside of the elastic bag 302 at the upper position above the outer flexible bag 301, after the outer flexible bag 301 is attached to the outer side of the inner flexible bag 101, a proper amount of nitrogen is injected into the inside of the elastic bag 302 through the air flow channel, so that convenience of constructing an outer elastic inflatable protection layer by the device is improved.
Referring to fig. 3, the outer side dimension of the elastic bag 302 is larger than the outer side dimension of the storage cavity 103, a rigid plastic frame 303 fixedly connected with the outer flexible bag 301 is disposed at the edge of the elastic bag 302, and when the packaging bag is used, the inflated elastic bag 302 can be fully wrapped outside the storage cavity 103 by setting the outer side dimension of the elastic bag 302 to be larger than the outer side dimension of the storage cavity 103, so that the packaging bag is beneficial to improving the integrity of the packaging bag for wrapping and protecting materials inside the storage cavity 103, and meanwhile, the expansion range of the elastic bag 302 can be limited to a certain extent by fixedly sleeving the rigid plastic frame 303 outside the elastic bag 302, so that the expansion shape of the elastic bag 302 can be standardized to a certain extent, and convenience in the subsequent stacking and use processes can be guaranteed.
Referring to fig. 4 and 5, the rigid plastic frames 303 fixedly mounted on the two outer flexible bags 301 are arranged in a front-back symmetrical structure, and permanent magnet pieces with attractive magnetism are respectively and fixedly inlaid in the two rigid plastic frames 303.
Referring to fig. 3-5, the outer side dimension of the outer flexible bag 301 is adapted to the outer side dimension of the inner flexible bag 101, the corner positions of the inner flexible bag 101 and the outer flexible bag 301 are both in arc structures, the outer side edge positions of the inner flexible bag 101 and the outer flexible bag 301 are fixedly surrounded by flexible edges 304, the thickness of the flexible edges 304 is larger than the sum of the thicknesses of the two inner flexible bags 101 and the two outer flexible bags 301, and when the packaging bag is used, the corner positions of the inner flexible bag 101 and the outer flexible bag 301 are set to be arc structures, damage to a user in the use process due to the existence of sharp corners is avoided, meanwhile, the edge positions of the inner flexible bag 101 and the outer flexible bag 301 are surrounded by the flexible edges 304, the edge positions of the inner flexible bag 101 and the outer flexible bag 301 are protected, meanwhile, the inner flexible bag 101 and the outer flexible bag 301 can be effectively packaged again, the probability of air leakage of the inside the cavity 103 and the flexible bag 301 is guaranteed again, and the stability of the packaging bag can be guaranteed.
Example 2:
In which the same or corresponding parts as those in embodiment 1 are denoted by the corresponding reference numerals as those in embodiment 1, only the points of distinction from embodiment 1 will be described below for the sake of brevity. This embodiment 2 is different from embodiment 1 in that:
The application discloses a packaging method of a double-layer composite flexible packaging bag, referring to fig. 1-10, comprising the following steps:
S1, attaching two inner flexible bag bodies 101 with matched sizes back and forth, forming continuous heat sealing edges 102 at the edge positions of three adjacent edges on the inner flexible bag bodies 101 in a hot-pressing packaging mode, and enabling the two inner flexible bag bodies 101 attached to each other to form a bag-shaped structure by sealing off the heat sealing edges 102, wherein one side edge of the bag body, which is not packaged with the heat sealing edges 102, is used as an opening;
s2, throwing the material to be packaged into a storage cavity 103 formed between the two inner flexible bag bodies 101 through an opening reserved between the two inner flexible bag bodies 101;
S3, sealing and packaging the reserved opening on the inner flexible bag body 101 in a hot-pressing and packaging mode, and pumping out air remained in the storage cavity 103 through the opening to be sealed in the hot-pressing and packaging process;
S4, coating the adhesive on the edge position of the outer flexible bag 301, avoiding the adhesive from being coated in an air flow channel reserved on the outer flexible bag 301, and respectively fixing the two outer flexible bags 301 on the outer surfaces of the front inner flexible bag 101 and the rear inner flexible bag 101 in an adhesive bonding mode;
S5, filling proper amount of nitrogen into the elastic bag 302 through an air flow channel reserved above the outer flexible bag 301, so that the elastic bag 302 is inflated and wrapped outside the storage cavity 103, and then sealing the reserved air flow channel in a hot-pressing packaging mode;
S6, cutting the corner positions of the inner flexible bag body 101 and the outer flexible bag body 301 which are mutually attached, so that the corners of the inner flexible bag body 101 and the outer flexible bag body 301 form a circular arc structure, and the flexible wrapping edges 304 are wrapped around the edge positions of the inner flexible bag body 101 and the outer flexible bag body 301 in a pasting mode.
Referring to fig. 10, after S3 is finished, the label coding machine prints the production information of the material in the storage cavity 103 on the printing and dyeing area 2 on the outer surface of the inner flexible bag body 101, when the packaging bag is used, the production information includes important information such as production date, quality guarantee period, production permission, etc., and the production information is directly printed on the printing and dyeing area 2 after S3 is finished, in the subsequent packaging process, the production information printed on the printing and dyeing area 2 can be packaged below the outer flexible bag body 301, and after the material packaging is finished, the production information is difficult to be modified by external personnel without damage, which is beneficial to guaranteeing the safety of the material in the subsequent use process.
The present application is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present application and the improved concept thereof, can be equivalently replaced or changed within the scope of the present application.
Claims (10)
1. The double-layer composite type soft packaging bag comprises an inner packaging bag (1), and is characterized in that the inner packaging bag (1) comprises two inner flexible bag bodies (101) which are symmetrically attached backwards, heat sealing edges (102) are formed at the positions of the left side, the right side and the bottom side of the two inner flexible bag bodies (101) in a hot pressing and packaging mode, and a storage cavity (103) is formed at the middle position between the two inner flexible bag bodies (101) through the heat sealing edges (102);
The outside parcel of interior wrapping bag (1) has extranal packing bag (3), and extranal packing bag (3) are including fixed laminating outer flexible bag body (301) on the surface of two interior flexible bag bodies (101), be provided with elastic bag (302) on outer flexible bag body (301), and the inside of elastic bag (302) is filled with nitrogen gas.
2. The double-layer composite flexible packaging bag according to claim 1, wherein the elastic deformation capability of the material of the area corresponding to the storage cavity (103) on the inner flexible bag body (101) is larger than that of the material of the surrounding area.
3. The double-layer composite flexible packaging bag according to claim 1, wherein the outer surface of the inner flexible bag body (101) is coated with a printing and dyeing area (2), and fluorescent powder is embedded in the printing and dyeing area (2).
4. The double-layer composite flexible packaging bag according to claim 1, wherein an adhesive is coated on the end wall of one side of the outer flexible bag body (301) close to the inner flexible bag body (101), and the outer flexible bag body (301) is adhered to the outer side of the inner flexible bag body (101) through the adhesive.
5. The double-layer composite flexible packaging bag according to claim 4, wherein the adhesive is painted around the edge of the outer flexible bag body (301), and an air flow channel communicated with the elastic bag (302) is pre-embedded in the middle position above the outer flexible bag body (301).
6. The double-layer composite flexible packaging bag according to claim 1, wherein the outer side dimension of the elastic bag (302) is larger than the outer side dimension of the storage cavity (103), and a hard plastic frame (303) fixedly connected with the outer flexible bag body (301) is arranged at the edge position of the elastic bag (302).
7. The double-layer composite flexible packaging bag according to claim 6, wherein the two rigid plastic frames (303) fixedly mounted on the outer flexible bag body (301) are of a front-back symmetrical structure, and permanent magnet sheets with magnetic attraction are respectively fixedly inlaid in the two rigid plastic frames (303).
8. The double-layer composite flexible packaging bag according to claim 1, wherein the outer side dimension of the outer flexible bag body (301) is matched with the outer side dimension of the inner flexible bag body (101), the corner positions of the inner flexible bag body (101) and the outer flexible bag body (301) are all in arc structures, flexible wrapping edges (304) are fixedly encircling the outer side edge positions of the inner flexible bag body (101) and the outer flexible bag body (301), and the thickness of the flexible wrapping edges (304) is larger than the sum of the thicknesses of the two inner flexible bag bodies (101) and the two outer flexible bag bodies (301).
9. The packaging method of the double-layer composite type soft packaging bag is characterized by comprising the following steps of:
S1, attaching two inner flexible bag bodies (101) with matched sizes back and forth, forming continuous heat sealing edges (102) at the edge positions of three adjacent edges on the inner flexible bag bodies (101) in a hot-pressing packaging mode, and enabling the two inner flexible bag bodies (101) attached to each other to form a bag-shaped structure by sealing off the heat sealing edges (102), wherein one side edge of the bag body, which is not packaged with the heat sealing edges (102), is used as an opening;
S2, throwing the material to be packaged into a storage cavity (103) formed between the two inner flexible bag bodies (101) through an opening reserved between the two inner flexible bag bodies (101);
s3, sealing and packaging reserved openings on the inner flexible bag body (101) in a hot-pressing packaging mode, and pumping out air remained in the storage cavity (103) through the openings to be sealed in the hot-pressing packaging process;
s4, coating the adhesive on the edge position of the outer flexible bag body (301), avoiding the adhesive from being coated in an air flow channel reserved on the outer flexible bag body (301), and respectively fixing the two outer flexible bag bodies (301) on the outer surfaces of the front inner flexible bag body and the rear inner flexible bag body (101) in an adhesive bonding mode;
S5, filling proper amount of nitrogen into the elastic bag (302) through an air flow channel reserved above the outer flexible bag body (301) so that the elastic bag (302) is inflated and wrapped outside the storage cavity (103), and then sealing the reserved air flow channel in a hot-pressing packaging mode;
S6, cutting the corner positions of the inner flexible bag body (101) and the outer flexible bag body (301) which are mutually attached, enabling the corners of the inner flexible bag body (101) and the outer flexible bag body (301) to form arc structures, and wrapping the flexible wrapping edges (304) around the edge positions of the inner flexible bag body (101) and the outer flexible bag body (301) in a sticking mode.
10. The packaging method of the double-layer composite flexible packaging bag according to claim 9, wherein after the step S3 is finished, the production information of the material in the storage cavity (103) is printed on the printing and dyeing area (2) on the outer surface of the inner flexible bag body (101) through the label coding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410794117.5A CN118358883A (en) | 2024-06-19 | 2024-06-19 | Double-layer composite type soft packaging bag and packaging method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410794117.5A CN118358883A (en) | 2024-06-19 | 2024-06-19 | Double-layer composite type soft packaging bag and packaging method thereof |
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| CN118358883A true CN118358883A (en) | 2024-07-19 |
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| CN202410794117.5A Withdrawn CN118358883A (en) | 2024-06-19 | 2024-06-19 | Double-layer composite type soft packaging bag and packaging method thereof |
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| CN217397251U (en) * | 2022-04-28 | 2022-09-09 | 上海庆丰彩印有限公司 | Food packaging bag with air exhaust structure |
| CN218987416U (en) * | 2022-11-10 | 2023-05-09 | 丁文斗 | Double-layer sealing middle nitrogen-filled food packaging container |
| CN220411388U (en) * | 2023-07-21 | 2024-01-30 | 安徽紫金新材料科技股份有限公司 | Dairy product packaging bag with double-layer structure |
-
2024
- 2024-06-19 CN CN202410794117.5A patent/CN118358883A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07137751A (en) * | 1993-11-12 | 1995-05-30 | Dainippon Printing Co Ltd | Enclosed double bag |
| JPH1134237A (en) * | 1997-07-14 | 1999-02-09 | Dainippon Printing Co Ltd | Double packing bag |
| WO2008038723A1 (en) * | 2006-09-27 | 2008-04-03 | Toyo Kasei Kogyo Co., Ltd. | Packaging container |
| JP2015174662A (en) * | 2014-03-13 | 2015-10-05 | 凸版印刷株式会社 | Packaging bag, packaging container using the same and package |
| EP3059061A1 (en) * | 2015-02-20 | 2016-08-24 | Mondi Consumer Packaging Technologies GmbH | Method for recycling plastics from a film packaging bag, film packaging bag and film composite sheet for manufacturing a film packaging bag |
| JP3206291U (en) * | 2016-06-28 | 2016-09-08 | 京セラメディカル株式会社 | Double packaging for medical devices for living implants |
| US20180086531A1 (en) * | 2016-09-23 | 2018-03-29 | Amazon Technologies, Inc. | Food packaging with multi-layer structure |
| CN217397251U (en) * | 2022-04-28 | 2022-09-09 | 上海庆丰彩印有限公司 | Food packaging bag with air exhaust structure |
| CN218987416U (en) * | 2022-11-10 | 2023-05-09 | 丁文斗 | Double-layer sealing middle nitrogen-filled food packaging container |
| CN220411388U (en) * | 2023-07-21 | 2024-01-30 | 安徽紫金新材料科技股份有限公司 | Dairy product packaging bag with double-layer structure |
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Application publication date: 20240719 |
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