Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
  • B65D31/16—Bags or like containers made of paper and having structural provision for thickness of contents of special shape
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
  • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
  • B65D81/051—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric
  • B65D81/052—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric filled with fluid, e.g. inflatable elements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
  • B65D81/03—Wrappers or envelopes with shock-absorbing properties, e.g. bubble films
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
  • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
  • B65D81/07—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using resilient suspension means

Definitions

• the present invention relates to a plastic film bag, and more particularly to a plastic film bag having a buffering function with air injected into a plurality of cells.
• this cushioning packaging bag has a problem that an extra member such as a double-sided adhesive tape is required for sealing, and the work of attaching the tape to the flap is troublesome.
• an extra member such as a double-sided adhesive tape is required for sealing, and the work of attaching the tape to the flap is troublesome.
• cells expand in a circular or elliptical cross section when air is injected, there still remains a problem that the bonding area is reduced, the bonding strength may be reduced, or the cells may be easily peeled off.
• an object of the present invention is to provide a plastic film bag having an air buffering function that does not require an adhesive for sealing and that can be tightly sealed. Disclosure of the invention
• a plastic film bag according to the present invention is characterized in that a bag-shaped fabric in which a plurality of long cells made of a plastic film are connected in the short side direction thereof is substantially at the center in the long side direction of the cells.
• a bag body composed of a front surface portion and a back surface portion, which is folded back at the portion and welded at both ends, and which extends from the open end of the back surface portion of the bag body and communicates with the cells of the bag body in a permeable manner.
• a flap comprising a group of a plurality of cells; and an injection means provided in the bag body for injecting air into the cells of the bag body and the flap. And when air is injected into the cell of the flap, the flap is characterized in that it is pressed between the stored article and the air-inflated surface.
• the plastic film bag according to the present invention stores the article in the bag body and injects air into each cell to reduce the inner peripheral dimension of the bag body and store the article in a compressed state.
• Air acts as a cushioning material.
• the flap is pressed between the storage item and the air-inflated surface. This crimping force can be set very strong, and the flap cannot be extracted unless the air in the cell is exhausted.
• the plastic film bag according to the present invention does not require an adhesive for sealing because the flap is strongly pressed by the air pressure injected into the cell. For example, the air is not released by making a hole in the cell. As long as the bag can not be opened. This means that it is easy to determine even if a stored item is intentionally removed during transport.
• the cushioning packaging bag mentioned as the prior art is characterized in that the air injected into each cell functions as a cushioning material, and the inner periphery of the bag is injected by injecting air into the cell. There is no concept of holding articles by shrinking D
• a dent is formed on the inner surface of the surface portion of the bag body when inflated, and the dent and the inflated portion of the flap are engaged. Such engagement reliably prevents the flap from coming off.
• the injection means includes a check valve provided in each cell of the bag body, an air injection member provided in the bag body, and an air supply passage for supplying air from the air injection member to each check valve.
• the injection means may be constituted by a check valve provided in the bag body, and an air supply passage for supplying air from the check valve to each cell of the bag body. Since no check valve is provided for each cell, the configuration of the bag body can be simplified. If this check valve is attached to the open end of the surface of the bag body, the air injection work is easy.
• FIG. 1A is a plan view showing a plastic bag according to a first embodiment of the present invention
• FIG. 2A is a plan view showing a state in which the plastic bag shown in FIG. 1A is unfolded
• FIG. 3 is a sectional view showing a state where articles are stored in the plastic film bag shown in FIG. 1A,
• FIGS. 4A and 4B are perspective views showing a process of storing articles in a plastic film bag.
• FIG. 5A and FIG. 5B show the contracted state of the inner periphery of the bag body due to the injection of air. Explanatory diagram,
• FIG. 6A is a plan view showing a plastic bag according to a second embodiment of the present invention
• FIG. 6B is a sectional view taken along the line c--c of FIG.
• FIG. 7A is a plan view showing a state in which the plastic bag shown in FIG. 6A is expanded
• FIG. 7B is a sectional view taken along line d—d of FIG.
• FIG. 8 is a sectional view showing a state where articles are stored in the plastic film bag shown in FIG. 6A,
• FIG. 9A is a plan view showing a plastic bag according to a third embodiment of the present invention.
• FIG. 10 is a plan view showing a state in which the plastic bag shown in FIG. 9A is expanded.
• FIG. 11A and FIG. 11B are cross-sectional views showing a state where articles are stored in the plastic film bag shown in FIG. 9A.
• FIG. 12A is a plan view showing a plastic bag according to a fourth embodiment of the present invention.
• FIG. 13 is a plan view showing a state in which the plastic bag shown in FIG.
• FIG. 14 is a cross-sectional view showing a state where articles are stored in the plastic film bag shown in FIG.
• FIG. 15A, FIG. 15B, and FIG. 15C are perspective views showing steps of storing an article in a plastic film bag according to another embodiment.
• FIG. 1A is a plan view of the plastic film bag 10 according to the first embodiment
• FIG. 2A is a development view before forming a bag.
• the bag 10 is formed by forming ten elongated cells 12 made of a plastic film into a linear welded portion 12 a in the direction of the long side thereof. It is made of a bag-like fabric 11 1 connected in the short side direction. This bag-like fabric 11 consists of two front films, a back film, and a cap. Further, in each cell 12, welded portions 12 b and 12 c in which the front film and the back film are partially welded are also formed.
• FIG. 2B shows each cell 12 in a state of being expanded by the injected air.
• the bag-like material 11 is folded back at a substantially middle portion 15 in the long side direction of the cell 12 and both ends are welded as shown in FIGS. 1A and 1B (the welding portion 1).
• the bag body 14 is formed of the front surface portion 17a and the back surface portion 17b and has the open end portion 18.
• the bag body 14 is provided with a flap 20 extending from the opening end of the back surface portion 17b.
• the flaps 20 are integrally formed of a plastic film common to the cells 12, and the welding portions 12 a that define the cells 12 are extended to communicate with the cells 12 in a permeable manner.
• Cell 2 1.
• a welded portion 12d in which the front film and the back film are partially welded is formed in the communicating portion between the cells 12 and 21.
• the bag body 14 is provided with an injection means for injecting air into the cells 12 and 21.
• This injection means includes a check valve 31 provided at one end of each cell 12 (the open end 18 side of the surface 17a of the bag body 14) and one side of the bag body 14 ( It is composed of an air injection member 32 provided at the open end 18) of the surface portion 17a, and an air supply passage 33 for supplying air from the air injection member 32 to each check valve 31. Have been.
• the check valve 31 has a well-known structure in which two plastic films are stacked. (For example, see Japanese Utility Model Laid-Open No. 1-16441, Japanese Patent Application Laid-Open No. 7-110159), which allows air to flow into the inside of the cell 12, It has the function of blocking.
• the air injecting member 32 is formed by laminating two plastic films and inserting and fusing between the front film and the back film of the bag body 14, and a compressed air is injected by inserting a nozzle (not shown).
• the air inlet passage 33 is an air passage common to each cell 12 provided at one edge of each cell 12 (also as one edge on the surface 17a of the bag body 14).
• the compressed air injected from the injection member 32 is injected into each cell 12 through the check valve 31 through the passage 33 and further into each cell 21 of the flap 20.
• the bag-shaped dough 11 is hermetically welded over its entire periphery, and the air supply passage 33 communicates with the outside only through the air injection member 32. I have.
• the article A is stored as shown in FIGS.
• the article A is inserted into the bag body 14 from the opening end 18.
• the flap 20 is inserted between the article A and the surface portion 17a.
• the cell 12 expands into an elliptical cross section, and air is also injected into the cell 21 of the flap 20. Inflates as well.
• the flap 20 is pressed between the stored article A and the surface portion 17a expanded with air.
• the article A is stored in a compressed state on the basis that the inner peripheral dimension of the bag body 14 is reduced by the expansion of the cell 12.
• the flap 20 also receives a strong tightening force from the expanded surface portion 17a, and securely seals the bag body 14. In this retracted state, it is difficult to pull out the flap 20 by hand It is.
• some cells 12 may be pierced to release the shrinkage of the bag body 14 and the flap 20 may be pulled out. Therefore, a hole for air bleeding may be previously formed in each cell 12 and sealed with a tape or the like, and the tape may be peeled off at the time of unpacking.
• FIG. 5A shows a cross section of the bag body 14 in a state where air is not injected into the cell 12
• FIG. 5B shows a bag body 1 in a state where air is injected into the cell 12 and inflated.
• 4 shows a cross section.
• the width of the cell 12 is 3 O mm
• the width of the welded portion 12 a is 2 mm
• the number of the cells 12 is 16, the bag body 14 before insufflation is obtained.
• Has a circumference of (30 + 2) XI 6 5 12 mm.
• the article A is tightened due to such a difference in inner peripheral dimensions before and after the air supply, even a thin article or a small article can be reliably held and the flap 20 can be prevented from coming off.
• a longitudinally welded portion 12c is formed near the open end 18 of the surface portion 17a.
• This welded part 1 2 c As shown in the figure, it corresponds to the tip of the flap 20 when the articles are stored.
• the expansion diameter at this portion of the cell 12 becomes smaller than that without the welded portion 12c. That is, as shown in FIG. 3, a dent 13 is formed in the welded portion 12 c, and the expanded portion 22 of the flap 20 enters the dent 13. In this way, the surface portion 17a and the flap 20 are engaged with each other by the depression 13 and the inflated portion 22, so that the flap 20 is more reliably prevented from coming off.
• FIGS. 6 to 8 (Second embodiment, FIGS. 6 to 8)
• the second embodiment is a plastic film bag basically having the same structure as the first embodiment. Accordingly, in FIGS. 6 to 8, the same members and portions are denoted by the same reference numerals as in FIGS. 1 to 3, and only different structures will be described.
• FIG. 7B is an exploded view of the bag body 14 in which air is injected into the cells 12 and 21.
• the injection means is provided with a check valve 35 provided on one side (opening end 18 of the surface portion 17a) of the bag body 14; And a supply passage 36 for supplying air from the check valve 35 to each cell 12.
• the check valve 35 is conventionally known for injecting air into this type of bag, and a detailed description thereof will be omitted.
• the plastic film bag 10 of the second embodiment is easy to manufacture because the check valve 31 is not provided in each cell 12.
• air can be exhausted by inserting a straw or wire into the check valve 35, and the bag 10 can be used any number of times.
• the method of storing the article A and the action of fastening the flap 20 are the same as in the first embodiment. (Third embodiment, Figs. 9 to 11)
• the third embodiment is a plastic film bag basically having the same structure as the first embodiment, and is the same as the second embodiment in that one check valve 35 is provided. Accordingly, in FIGS. 9 to 11, the same members and portions are denoted by the same reference numerals as in FIGS. 1 to 3 and FIGS. 6 to 8, and only different structures will be described.
• FIG. 9B is a cross-sectional view of the bag body 14, and shows a state in which air is injected into the cells 12 and 21.
• the third embodiment is for accommodating a thin article B as shown in FIG. 11A, or for accommodating a small article B ′ as shown in FIG.
• the difference from the second embodiment is that the length of the flap 20 is increased so that the tip thereof reaches the bottom of the bag 10, and the width of each cell 21 of the flap 20 is increased (welding).
• the part 21a has a pitch twice as large as that of the first and second embodiments) so that the cell 21 can expand to a larger diameter when air is injected.
• each of the cells 12 is formed with three welded portions 12e instead of the welded portions 12c in order to ensure engagement with the flaps 20 during expansion.
• FIGS. 12 to 14 Fluth embodiment, FIGS. 12 to 14
• the fourth embodiment is a plastic film bag for storing a thin article B or a small article B ′ as in the third embodiment. Therefore, in FIGS. 12 to 14, the same members and portions are denoted by the same reference numerals as in FIGS. 9 to 11, and only different structures will be described.
• FIG. 12B is a cross-sectional view of the bag body 14, and shows a state where air is injected into the cells 12 and 21.
• a transversely welded portion 21b is formed in the flap 20 to form a cell 21 having a large width. When the air is injected, the cell 21 has a larger diameter. This is based on the same concept as in the third embodiment in that the expansion is performed in the following manner.
• the fifth embodiment is basically a plastic film bag having the same structure as that of the first embodiment, except that the flap 20 is longer.
• the article C is placed on the long flap 20 (see FIG. 15A), and the article C is wrapped around by the flap 20 (see FIG. 15B).
• Article C is stored in bag body 14 together with flap 20. After that, air is injected into the cells 12 and 21.
• the fact that the flap 20 is press-fitted in the bag body 14 by the expansion of the cell 12 is the same as in the first to fourth embodiments.
• plastic film bag according to the present invention is not limited to the above embodiments, but can be variously changed within the scope of the gist. Industrial applicability
• the plastic film bag according to the present invention is useful as a packaging material for articles that need to avoid impact, such as electric products such as notebook computers, electronic components, and broken objects, and in particular, the conventional impact buffer. It is suitable to be used as a substitute for styrene foam.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Buffer Packaging (AREA)

Priority Applications (6)

Applications Claiming Priority (1)

Publications (1)

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Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (40)

Citations (2)

Family Cites Families (5)

• 2002
  • 2002-02-27 AU AU2002234905A patent/AU2002234905A1/en not_active Abandoned
  • 2002-02-27 CN CNA028282957A patent/CN1620392A/zh active Pending
  • 2002-02-27 KR KR1020047011555A patent/KR100556718B1/ko not_active IP Right Cessation
  • 2002-02-27 US US10/502,400 patent/US20050109656A1/en not_active Abandoned
  • 2002-02-27 WO PCT/JP2002/001782 patent/WO2003072456A1/ja active Application Filing
  • 2002-02-27 JP JP2003571172A patent/JPWO2003072456A1/ja not_active Withdrawn

Patent Citations (2)

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