CN1161260C - Inflatable cushioning package - Google Patents

Abstract

An air bag, comprising an automatic closing check valve and at least a pair of air chambers each formed of a flexible sheet and opposed to each other, wherein, after an object is stored in a space hold between these opposed air chambers, gas is filled into the air chambers so that the object can be pressed and held by the inflation of the two air chambers opposed to each other.

Description

Inflatable cushioning package

technical field

The invention relates to a reusable inflatable cushioning package.

Background technique

In the past, various configurations of expanders have been used to prevent breakage when transferring, for example, glass and ceramic products that are prone to breakage due to impact, or precision parts that are adversely affected by vibration. For example, as the example of such cushioning slow impact member, known plastic foams such as foamed styrene, urethane foam, its foamed bead or string-like body, papers such as corrugated cardboard, arranged small The air cushion of the air chamber or the cushion filled with other fluids, etc.

However, no matter what kind of cushioning material is used, it is not enough to reliably hold the conveyed article at a predetermined position without causing shocks and large vibrations to the conveyed article, and there is a need to respond to each conveyed article. Disadvantages of complex shape forming and construction that make mass production difficult.

In addition, the use of cushioning materials that are easy to lose has the disadvantages of difficult disposal after use, inability to reuse, and difficulty in the regeneration of valuable resources.

For this reason, in the past, a cushioning material utilizing an air bag as represented by Japanese Patent Application Laid-Open No. 4-27771 has been proposed. Both of them form a plurality of air pockets into a cylindrical shape, insert an object inside, fill with air, and hold the object by expansion. Then, a check valve is installed thereon to form a structure in which the once-filled air does not leak.

However, check valves used in the past for expansion type cushioning did not have sufficient performance, and air leakage could not be completely prevented by a simple mechanism. Therefore, the air chamber shrank over time and could not fully function as a cushioning material.

Therefore, the inflatable body of the present invention is made in order to eliminate the above-mentioned disadvantages of the conventional examples, and its object is to provide an inflatable cushioning package that can not only reliably keep the transported items at a specified position, and shocks and large vibrations can be applied to conveyed articles, and it can be used regardless of the shape of conveyed articles, and the performance can be maintained for a long time.

Contents of the invention

That is, the inflatable cushioning package of the present invention is an air bag having at least a pair of facing air chambers made of flexible sheets, and the air chambers have an automatic check valve formed by bending according to a predetermined curvature. The support body in the state and the elastic member that can be in close contact with it clamp the two sides of the openable and closable channel body made of flexible sheet, and at the same time, or further clamp these channel bodies by the support body and the cover body bent according to the specified curvature The elastic material is engaged with the elastic material by the engaging device, and the elastic material is pushed by the cover body along the support body in a state of bending at a specified curvature. In the normal state, the channel body is closed. When the rod-shaped body is inserted into the channel body between the support body and the elastic material , the elastic material is deformed, and the channel body is opened. When the rod-shaped body is pulled out, the elastic material is in close contact with the support body under the action of the restoring force to close the channel body; After the object is filled with gas into the air chamber, the object can be held by the expansion of the two opposing air chambers pushing the object.

In addition, the pair of facing air chambers may have the following features.

(1) It is formed by sandwiching one flexible sheet folded in half between two flexible sheets and welding (welding) the periphery.

(2) Formed by sandwiching one flexible sheet folded in half with another flexible sheet folded in half and welding the periphery.

(3) The tubular flexible sheet is folded in half, and the ends are welded.

(4) One flexible sheet is folded in half, and the periphery thereof is welded, and the overlapped portion of the ends is welded after the folded sheet is folded in half.

(5) Communication through the air channel.

(6) There is also a feature that a desired interval is provided.

(7) Insert the air passage bending preventing member into the air passage.

It may also have the following characteristics.

(8) The small air chambers connecting a pair of facing air chambers are formed by separating a plurality of air passages arranged in the longitudinal direction of the packaging body with weld lines intermittently formed in dotted lines.

(9) Among the flexible sheets constituting the inflatable cushion package, the sheet on the side of the outer skin is thicker than the sheet on the side of the inner skin.

(10) Among the flexible sheets constituting the inflatable cushion package, the sheet serving as the outer skin has higher mechanical strength than the sheet serving as the inner skin.

An inflatable cushioning package of the present invention is an air bag, the air bag has at least a pair of facing air chambers made of flexible sheets, the air chambers have automatic check valves, and the space between the facing air chambers After the object is stored in the center, the air chamber is filled with gas, and the object is pushed and held by the expansion of the two opposing air chambers. The elastic member in close contact with it clamps the two sides of the openable and closable channel body made of flexible sheet, at the same time, these channel bodies are clamped by the support body and cover body bent according to the specified curvature, and the elastic material is engaged by the engaging device. The cover body pushes the elastic material along the supporting body with a specified curvature, and the channel body is closed under normal conditions. When the rod-shaped body is inserted into the channel body between the supporting body and the elastic material, the elastic material deforms and the channel body opens. When the rod-shaped body is pulled out, the elastic material closely contacts the support body under the action of the restoring force to close the channel body; the pair of opposite air chambers folds a flexible sheet in half and then welds the surroundings and folds it in half and welds the ends. At the same time, the pair of facing air chambers are communicated by the air passage, and the facing pair of air chambers are separated from the desired interval by the smaller air chambers, and the small air chambers connecting these facing pair of air chambers are formed by Welding lines are formed at intervals, and the welding lines are interrupted in dotted lines by a plurality of air passages arranged in the longitudinal direction of the package, thereby forming the air pocket.

According to this invention, by using a high-performance self-closing check valve, it is possible to securely hold the conveyed article at a predetermined position, and not only apply shocks and large vibrations to the conveyed article, but also ensure that no matter the shape of the conveyed article is It can be used, and in addition, its performance can be maintained for a long time.

Even if it is used repeatedly, it has the durability to withstand the self-closing check valve sufficiently, so it can maintain the performance as a cushioning material for a long period of time.

Description of drawings

Fig. 1 is (a) front view and (b) bottom view of the inflatable cushioning package of the present invention.

2( a )-( e ) are schematic diagrams showing configuration examples of the inflatable cushioning package of the present invention.

Fig.3 (a)-(e) is a schematic diagram which shows the structural example of the inflatable cushion package of this invention.

Fig.4 (a)-(e) is a schematic diagram which shows the structural example of the inflatable cushion package of this invention.

Fig.5 (a)-(e) is a schematic diagram which shows the structural example of the inflatable cushion package of this invention.

6( a ) and ( b ) and ( c ) and ( d ) are a perspective view and a plan view respectively showing the configuration of main parts of the check valve.

7( a )-( d ) are schematic diagrams showing examples of thermal welding of channel bodies.

8( a )-( c ) are perspective views showing configuration examples of the cover body.

Fig. 9 is a diagram showing an assembled state of the check valve.

Fig. 10 is a perspective view showing a state in which the check valve is assembled.

Fig. 11 is a perspective view showing a state in which the check valve is assembled.

Figure 12 is its plan view.

Figure 13 is its cross-sectional view.

Fig. 14 is a cross-sectional view of a state where a straw is inserted.

15(a)-(d) are longitudinal sectional views showing the function of the check valve.

Fig. 16 is a schematic diagram illustrating a method of using the inflatable cushioning package of the present invention.

Fig. 17 is a schematic view showing an example of the operation of the inflatable cushioning package of the present invention.

18(a)-(c) are front and side views showing a second embodiment of the inflatable cushioning package of the present invention.

19(a)-(e) are schematic diagrams showing examples of this structure.

20( a ) and ( b ) are front views showing arrangement examples of check valves.

21(a)-(f) are schematic diagrams showing other configuration examples.

22(a)-(f) are schematic diagrams showing other configuration examples.

23(a)-(e) are schematic diagrams showing other configuration examples.

Fig. 24 is a schematic diagram showing a structure for preventing bending of an air chamber communicating portion and an example of its use.

25(a)-(f) are schematic diagrams showing other configuration examples.

26(a)-(b) are schematic diagrams showing their usage states.

27(a)-(c) are schematic diagrams showing other configuration examples.

Fig. 28 is a schematic diagram showing its usage state.

Detailed ways

Embodiments of the inflatable cushioning package of the present invention will be described below with reference to the drawings.

Fig. 1 is (a) a front view and (b) a bottom view of an inflatable cushioning package 1 of the present invention.

In the figure, an item 2 such as a tea cartridge is inserted. Symbol 3 is an automatic closing check valve (hereinafter referred to as check valve).

That is, as shown in (b) of the figure, the air chambers 4 and 5 are arranged facing each other, and in a state (normal state) before air is filled into the air chambers, a substantially cylindrical body is formed. The air chambers are connected, and a check valve 3 is provided on one side thereof.

If an object (cylindrical body 2 in the figure) is inserted under normal conditions and air is filled from the check valve 3, the two air chambers will expand slowly, and the sheet 6 constituting the inner wall will be in close contact with the object 2. When enough air is filled in the air chamber, the object 2 is fixed to the substantially center of the package 1 .

2 to 5 illustrate several structural examples of the inflatable cushioning package of the present invention.

Fig. 2 shows the case where three flexible sheets are used as an example of the first configuration. Prepare 1 sheet 7 folded in half to form the inner wall and 2 flat sheets 8A and 8B to form the outer wall, a total of 3 flexible sheets. (a) Among the sheet sizes, the width A of the sheet 7 folded in half is smaller than the width A of the other sheets 8A, 8B. This is because when three sheets are superimposed and welded around, the bent portion 9 of the sheet 7 is not welded to form the communicating portion of the air chamber.

Three sheets adjusted to such a size are superimposed as shown in (b) of the figure, and welded along the periphery of the sheet 8 (arrow portion). At this time, the check valve 3 is arranged between the sheets 7 and 8 . When welding, more specifically, all ends of the sheet 7 except the folded portion 9 are welded to the sheet 8 .

The check valve 3 is arranged at the bent portion of the sheet 7 in the figure, but of course it may be at the opposite end as shown in (c). In this case, what is necessary is just to ensure that the folded part 9 of the sheet|seat 7 does not fuse with the sheet|seat 8 as an air communication part.

This figure (d) is a normal front view, and (e) is a cross-sectional view. It was in a state like a flattened cylindrical body.

The material of the flexible sheet can be selected from plastic sheets, metal sheets, or composite sheets using these as constituent materials. Examples of the plastic sheet include polyethylene, polypropylene, polyester, polycarbonate, nylon resin, and the like. These flexible sheets or composite sheets are used as materials, and two sheets of material are bonded together, and the periphery thereof is heat-sealed to a predetermined width, thereby heat-welding to form it, or, for example, polyethylene or polyethylene can be used for the outer layer. The acrylic and inner layers use materials such as nylon resin or polyester, that is, laminated materials with a multi-layer structure.

In the following examples, it is assumed that laminated materials are used, but since nylon materials cannot be welded to each other, it is necessary to take measures for each material used in the treatment of the welded part.

Fig. 3 shows the case where two flexible sheets are folded in half and used in the second configuration example.

First, the sheet 7 constituting the inner wall and the sheet 8 (a) constituting the outer wall are prepared. Regarding the width dimensions (A) and (B), the width of the sheet 8 is larger than that of the sheet 7 . This is for the same reason as the configuration example shown in the previous figure.

Fold in half so that the ends face each other. The sheet 7 is inserted between the folded sheets 8 (b), and then the check valve 3 is inserted and welded along the periphery of the sheet 8 (c).

This figure (d) is a normal front view, and (e) a cross-sectional view. It is in a state where the cylindrical body is crushed.

Fig. 4 shows a case where a tubular sheet is used in the configuration example of Fig. 3 . First, a tubular flexible sheet as in (a) is prepared. Then, the check valve 3 is inserted into one end, and the two ends 10 are welded.

This figure (d) is a normal front view, and (e) a cross-sectional view. It is in a state where the cylindrical body is crushed.

Although it is the simplest structure, the inner sheet is in close contact with the outer sheet at the bent portion, so the circulation of the air in the air chamber is not sufficient, and even if the air is filled, the air chamber with the check valve 3 tends to expand. strong.

FIG. 5 shows a case where the fourth configuration example is constituted by only one sheet.

One flexible sheet as shown in (a) of the figure is prepared, and the flexible sheet is provided with a part 7 constituting the inner wall as shown in the figure (a) and a part 8 constituting the outer wall.

Next, as shown in (b), the check valve 3 is sandwiched, folded in half, and welded along the end. Also, it is folded in half as shown in (c) and (d), and the end portion 12 is welded.

This figure (d) is a front view of a normal state, and it becomes the state which crushed the cylindrical body.

In this example, part 7 and part 8 are provided with different sizes of end 12 because, for example, the flexible sheet is a composite sheet, and the front side of the paper is made of heat-sealable materials such as polyethylene or polypropylene. When the back side is made of materials that are not thermally weldable such as nylon, it is necessary to make the materials that can be thermally welded face each other. Therefore, if a single heat-sealable material is used, the dimensions of the portion 7 and the portion 8 are exactly the same, and the end portion 12 does not need to be formed.

6-15 show an example of the check valve used for the inflatable cushioning package of the present invention.

Fig. 6 shows an openable and closable channel body made of a soft sheet constituting the main part of the check valve. The channel body 101 is formed by bonding two flexible sheets, and the channel part 102 can be opened in a cylindrical shape. In addition, anti-deflection plates 103 holding the channel body 101 are formed on both sides of the channel portion 102 sandwiched between a support body and an elastic body described later. Symbol 104 is the guide part of the channel body 101 protruding from the position of the anti-deflector plate 103 .

As the channel body 101, it is preferable to use a soft sheet selected from rubber sheet, plastic sheet, water-resistant paper, waterproof cloth, aluminum foil or a composite sheet thereof.

In FIG. 6 , (a) and (b) show the state where the channel portion 102 of the channel body 101 is closed, and (c) and (d) show the state where the channel portion 102 of the channel body 101 is opened and gas passes through.

FIG. 7 shows a case where two flexible sheets are bonded to heat-weld the channel portion 102 of the channel body 101 . In this figure, (a) shows the tapered passage portion 102 that narrows toward the side opposite to the guide portion 104 . (b) shows the channel part 102 which shrinks toward the side opposite to the guide part 104, and then becomes cylindrical at the front end. The passage portion 102 shown in (c) has a portion having a predetermined width toward the side opposite to the guide portion 104, then shrinks, and thereafter, its front end becomes cylindrical. (d) shows the cylindrical passage portion 102 formed in the same diameter as the guide portion 104 .

The width of the passage portion 102 of the passage body 101 is preferably such that gas can pass through smoothly and the check valve 3 as a whole is not too large. Of course, when filling with a rod-shaped body such as a straw, it is preferable to have a size corresponding to the diameter of the inserted rod-shaped body.

As the means for forming the channel portion 102 in the channel body 101, it is preferable to bond two flexible sheets and heat-weld them on the anti-polarization plate 103, but other forming means are also possible. When welding the anti-polarization plate 103 , it is only necessary to weld only the boundary with the channel portion 102 .

Fig. 8(a)-(b) shows examples of supporting body and elastic body for clamping the opening and closing of the above-mentioned channel body 101, especially self-sealing. The supporting body 105 and the elastic body 106 (not shown in the figure) are formed separately. A cover body 108 is formed at an end portion of the support body 105 so as to extend in the left-right direction via a plastic hinge 107 . The support body 105, the plastic hinge 107, and the cover body 108 are preferably molded into predetermined shapes by injection molding a plastic material composed of polyethylene, polypropylene, polyester, polycarbonate, or the like. Of course, the molding method is not limited to this injection molding.

In FIG. 8( a ), holding guides 109 are protrudingly provided on both sides of the upper part and both sides of the lower part of the support body 105 . In addition, an insertion guide 110 is provided at the center of the upper end of the above-mentioned support body 105 to a position where the rod-shaped body is inserted.

In the example of Fig. 8 (a), above-mentioned cover body 108 forms the guide groove 112 of the arc-shaped cross-section of the passage body 101 that accommodates through rod-shaped body in the substantially center of flat plate, along the longitudinal direction of passage body 101 on its both sides A pair of ribs 113 for pushing the sheet-shaped elastic body 106 are formed. The length, shape, position, and number of the ribs 113 can be appropriately determined according to the thickness, size, and the like of the elastic body 106 described above. However, it is preferable to have a sufficient length and shape, position, and number that do not impair the opening and closing of the elastic body 106 .

In addition, reference numeral 114 is a hook engaged with the end support body 105 provided on the cover body 108 . The hook 114 is fitted into a support opening 115 provided to penetrate to the end of the support body 105 in the thickness direction, and is used for detachment prevention. By fixing the support body 105 and the elastic body 106 together with the lid body 108 in a state of being bent at a predetermined curvature in this way, the check valve 3 having excellent durability can be obtained.

In the example of FIG. 8( b ), the cover body 108 forms ribs 113 for pushing the elastic body 106 to both sides of the guide groove 112 along a direction perpendicular to the length direction of the channel body 101 .

In the example of Fig. 8 (c), the cover body 108 is connected to the guide groove 112 of the circular arc section in the center along the supporting body 105 from both ends in an inwardly inclined state, and is not formed for pushing the above-mentioned elastic body. 106 of the rib 113 .

In the above description, the joint device composed of the hook 114 and the support port 115 was exemplified, but not only such joint means, but also the check valve 3 can be enclosed in the cylindrical piece, or means such as thermal welding or other shapes and structures can be used. .

The support body 105 and the cover body 108 may have the same thickness, or may have different thicknesses. As far as the relationship with the channel body 101 is concerned, the supporting body 105 and the cover body 108 need to be thick enough not to be deformed. In addition, the channel body 101 adopts a thinner thickness due to the need for flexibility. In addition, the elastic body 106 is considered functionally Need to be specified thickness. Of course, the elastic body 106 is preferably thicker than the channel body 101 .

The materials of the channel body 101 and the elastic body 106 can be selected from plastic sheets, metal sheets, or composite sheets using them as constituent materials. Examples of the plastic sheet include polyethylene, polypropylene, polyester, polycarbonate, and the like. In this case, it is preferable to make the channel body 101 the same material.

As the thickness of the above-mentioned elastic body 106, when the above-mentioned plastic sheet such as polyethylene is used, it is preferable to use a thickness of about 0.1-0.5 mm. In addition, regarding the size of the supporting body and the elastic body 105, 106, taking a rectangular case as an example, it is preferable that the horizontal axis: vertical axis ratio is about 2-1.5:1. For example, according to the actual size of horizontal axis: vertical axis, it can be 40mm: 25mm, 35mm: 20mm, 30mm: 11mm and other dimensions.

When the support body 105 and the elastic body 106 are curved, the radius of curvature is preferably 11 mm to 40 mm. Under a small curvature, the supporting body 105 and the elastic body 106 clamp the channel body 101 with a stronger force, and have a better response to insertion and removal of the tubular body 131 . Conversely, when the radius of curvature is increased, the force of the support body 105 and the elastic body 106 sandwiching the channel body 101 and the increase or decrease of the force at the time of press transfer or when the rod-shaped body is inserted or pulled can be adjusted.

As materials, it is preferable to use a single material for the bag body constituting the packaging body 1 , the plastic material constituting the channel body 101 , the support body 105 , the elastic body 106 , and the cover body 108 and sheets. For example, it has been confirmed that a material composed of plastic or its composite sheet with aluminum foil or the like is very suitable for solving the above-mentioned problems of the present invention in terms of versatility as a material, processability, disposal after garbage disposal, and the like.

9-12 show the state that the check valve 3 is formed by the support body 105 and the elastic body 106 sandwiching the channel body 101 . That is, Fig. 9 shows the state of opening the support body 105 and the cover body 108, Fig. 10 shows the state of accommodating the elongated pieces constituting the channel body 101 and the elastic body 106 along the holding guide 109, Fig. 11 shows the cover body 108 The hook 114 is inserted into the center of the support port 115 of the support body 105 and lives on both sides of the channel body 101 . In FIG. 11 showing this completed state, the channel body 101 is pushed to the support body 105 by the rib 113 of the cover body 108 together with the elastic body 106 .

The check valve 3 installed in this way keeps the channel body 101 in an arc shape in a state of bending along with the bending of the support body 105 and the elastic body 106 as shown in FIGS. Location. In this way, the shape of the elastic body 106 can be held along the support body 105 by the cover body 108 , and the bending can be reliably held by the rib 113 , and the channel body 101 can be pressed firmly.

Next, the operation of the check valve 3 configured in this way will be described.

FIG. 14 shows a state in which a straw and other tubular bodies 131 are inserted into the channel body 101 . In this check valve 3 , by inserting the tubular body 131 into the channel portion 102 of the channel body 101 , the tight contact between the channel portion 102 pressed by the support body 105 and the elastic body 106 is released to secure the channel. In this figure, a straw or the like is used as such a tubular body 131 to ensure a more reliable passage.

In FIG. 15 , which explains the above action in more detail, the front end of the tubular body 131 made of a straw or the like is inserted from the upper end of the guide portion 104 of the channel body 101 . Actually, by providing the insertion guide to this portion, a shape that facilitates insertion of the tubular body 131 can be formed. When the tubular body 131 is slowly pressed down as shown in Figures (a)-(d), the channel portion 102 of the channel body 101 is pushed away together with the elastic bodies 106 .

When the tubular body 131 is further pressed down, the elastic body 106 pushed to the supporting body 105 by the cover body 108 is pushed away along the entire length of the tubular body 131, allowing the gas to freely circulate as shown in figure (d). Therefore, the filling operation can be easily performed using the tubular body 131 made of a straw or the like.

On the contrary, when the passage portion 102 of the passage body 101 is to be closed, it is only necessary to pull out the tubular body 131 . That is, the elastic body 106 returns to the original position slowly, closely contacts the support body 105, and the channel portion 102 of the channel body 101 is reversely along the sequence of Figures (d)-(a), and the full length is automatically tightly closed again. touch. At this time, if a pressure to push back the object from the opposite direction is applied to the check valve 3, the pressure is transmitted to the channel body 101 through the support body 105 and the elastic body 106, and the channel part 102 of the channel body 101 is tightly closed.

In the above description, the opening and closing of the channel part 102 of the channel body 101 is performed by the tubular body 131 made of a straw or the like, but one end of the channel body 101 can also be opened to resist the elastic force of the elastic body 106. Pressurization is applied while forcibly passing the object through the channel portion 102, thereby pressing it in.

In this way, the check valve 3 prevents backflow and leakage of the air in the air chamber, so that the inflated state can be maintained for a long period of time.

As the above-mentioned elastic body 106, an elastic rod-shaped body and an elastic tube can be used instead of sheets, and particularly a silicon tube can be preferably used as the elastic tube.

When using the inflatable cushioning package of the present invention constituted in this way, as shown in FIG. Insert it there. After making the object 2 roughly in the middle, fill the air from the check valve 3 to expand the air chamber.

On the contrary, when taking out the object 2, the air can be discharged from the check valve 3 by the above-mentioned method, so that the air chamber is shrunk, and the object 2 can be taken out.

As described above, the inflatable cushioning package of the present invention can be repeatedly used by taking in and out of air.

In addition, as a more specific utilization method, as shown in Figure 17, the handle 14 is installed to form a bottle bag (1). In addition, it is basically not limited by size, so it can also be used with the object to be held. The dimensions of are correspondingly suitable for the conveyance of long-sized items (b). In the case of (a), it is preferable to take measures to prevent objects from falling at the bottom in consideration of the possibility of air leakage due to damage to the air chamber.

In the case where the sheets constituting the inner and outer walls are different as in the configuration example 1 of FIG. 2 and the configuration example 2 of FIG. Material that prevents the leakage of air caused by damage. Here, the term "mechanical strength" refers to all means required for evaluating the degree of resistance of a flexible sheet to damage due to external causes, such as stretching, elasticity, impact resistance, and fracture.

18 to 26 show a second embodiment of the inflatable cushioning package of the present invention. In the above-mentioned first embodiment, the type in which the pair of air chambers are directly connected is shown, but in this example, the type in which the pair of air chambers are indirectly connected is shown.

That is, in the preceding example, as shown in Figure 1, two air chambers are directly connected at both ends, therefore, when air is filled into the occasion of the air chamber, the substantially central portion of the packaging body is expanded into a circular shape regardless of whether the cross section is substantially expanded. In order to maintain a straight shape, bent portions are formed in the end welded portions. Bending is also influenced by the shape of the object to be stored, and its position and frequency vary, and the shape of the end portion when the object is stored is not beautiful.

Therefore, the applicant found that this problem can be solved by isolating the two air chambers with a certain interval.

That is, as shown in Fig. 18 (b) and (c), the joint ends 15 of the two air chambers are separated by the connecting portion 16, and the welded portion is generally in a beautiful rectangular shape, which is not affected by the size and size of the object to be accommodated. Influence.

In this way, not only the side but also the front as shown in (a) of this figure, the shape is very beautiful, and the displayability of products etc. is optimal. In addition, if the handle 14 is attached, a product package with high displayability can be formed.

19 to 26 show examples of this configuration.

Fig. 19 shows the case where three flexible sheets are used in the first configuration example.

First, three flexible sheets, one sheet 7 constituting the inner wall folded in half and two flat sheets 8A and 8B constituting the outer wall, are prepared. (a)

In the sheet size, the width A of the sheet 7 folded in half is smaller than the width A of the other sheets 8A, 8B. This is because, when three sheets are superimposed and welded around, the bent portion 9 of the sheet 7 is not welded to form the communicating portion of the air chamber.

Three sheets adjusted to such a size are superimposed as shown in (b) of the figure, and welded along the circumference of the sheet 8 (arrow part). At this time, the check valve 3 is arranged between the sheets 7 and 8 . When welding, more specifically, all ends of the sheet 7 except the folded portion 9 are welded to the sheet 8 . Weld lines 17A and 17B are provided at upper and lower desired positions. Weld line 17A is provided along the entire width, and 17B leaves communication portion 18 connecting two air chambers. In this case, as shown in this figure (c), when the welded portion is formed into an L-shape, only the communication portion 18 is formed, and when air is filled, as shown in FIG. 18 (b), the connecting portion 16 at the bottom is still When the plane is welded in an open state as shown in Fig. 19(d), another air chamber may be provided at the bottom as shown in Fig. 18(c).

(e) is a longitudinal section view. It was in a state like a flattened cylindrical body.

The material of the flexible sheet can be selected from plastic sheets, metal sheets, or composite sheets using these as constituent materials. Examples of the plastic sheet include polyethylene, polypropylene, polyester, polycarbonate, nylon resin, and the like. These flexible sheets or composite sheets are used as materials, and two material sheets are bonded together, and the periphery thereof is heat-sealed with a predetermined width, thereby heat-welding, or polyethylene or polypropylene may be used for the outer layer, for example. , The inner layer uses a material such as nylon resin or polyester.

Of course, the check valve 3 may also be arranged as shown in FIG. 20 .

Fig. 21 shows the case where two flexible sheets are folded in half and used in the second configuration example.

First, the sheet 7 constituting the inner wall and the sheet 8 (a) constituting the outer wall are prepared. Regarding the width dimensions (A) and (B), the width of the sheet 8 is larger than that of the sheet 7 . This is for the same reason as the configuration example shown in the previous figure.

After being folded in half, make them face the same direction, insert the sheet 7 between the folded sheets 8 (b), in addition, insert the check valve 3, weld along the periphery of the sheet 8, and at the same time, from the upper and lower ends to the Set the weld line (c) at the desired location. In this case, the welding line 17A is provided along the entire width, and the connecting portion 18 connecting the two air chambers is left at the welding line 17B. In this case, as shown in this figure (4), when the welded portion is formed into an L-shape, only the communicating portion 18 is formed, and when air is filled, as shown in FIG. 18(b), the connecting portion 16 at the bottom is still When the plane is welded in an open state as shown in Figure 21(5), another air chamber can be provided at the bottom as shown in Figure 18(3).

(f) is a longitudinal section view. It was in a state like a flattened cylindrical body.

Fig. 22 shows the case where a tubular sheet is used in the third configuration example.

First, a tubular flexible sheet as in (a) is prepared, and four weld lines are provided at desired positions. In addition, a check valve 3 is inserted into one end, and two end portions 10 are welded.

In this case, the weld line 17 is formed leaving the communicating portion 18 communicating with the air chamber. However, for 17B, as shown in (d) of this figure, when the welded portion is formed in an L-shape, only the communication portion 18 is formed, and when air is filled, as shown in FIG. 18 (b), the connecting portion 16 at the bottom remains It is planar, but when it is welded in an open state as shown in Fig. 21(e), another air chamber may be provided at the bottom as shown in Fig. 18(c).

In the case of this example, 17A is also provided with a communicating portion, so in FIG. 18( c ), a small air chamber is also generated in the upper connection portion 16 .

(f) is a longitudinal section view. It is in a state where the cylindrical body is crushed.

Although it is the simplest structure, the inner sheet is in close contact with the outer sheet at the bent portion, so the communication of the air in the air chamber is not sufficient. Even if the air is filled, the air chamber with the check valve 3 tends to expand. strong.

FIG. 23 shows a case where the fourth configuration example is constituted by only one sheet.

Prepare a flexible sheet in which the part 7 constituting the inner wall and the part 8 constituting the outer wall as shown in (a) of this figure are connected. The reason for the difference in width between the two parts is to use polyethylene as the material of the flexible sheet. In the case of laminated materials of resin (PE) and nylon resin (NY), polyethylene is welded to each other. That is, in the drawing, the outer side is made of nylon resin and the inner side is made of polyethylene resin. In the case of a single material sheet of only polyethylene resin or a composite material such as PE-NY-PE, since non-weldable nylon resins do not touch each other, they may be of the same width. This is the same for all embodiments of the invention.

Next, as shown in (b), the check valve 3 is pinched, folded in half, welded along the end, and the welded line 17B is formed at the same time. In addition, as shown in (c) and (d), the end portion 12 is welded after being folded in half.

When the welding line 17A is formed into a 匚-shaped welded portion, only the communicating portion 18 is formed, and when the air is filled, as shown in FIG. When welding in an open state as shown, another air chamber may be provided at the bottom as shown in FIG. 18(c).

This figure (d) is a normal front view, and it becomes the state like a crushed cylindrical body.

FIG. 24 shows the bending preventing member of the air chamber communicating portion 18 .

In the method shown in Fig. 4, Fig. 5, Fig. 22, and Fig. 23, as shown in Fig. 24 (d), the sheet 7 constituting the inner wall and the sheet 8 constituting the outer wall are in close contact at the bending portion, and the In the connection between the air chambers 4 and 5, the air flowing in from the check valve 3 does not pass through the communication portion 18, and only the air chamber 4 on the side with the check valve 3 expands, and the two air chambers cannot be inflated in a well-balanced manner. Therefore, Problems such as the location of contained objects cannot be determined.

Therefore, by inserting the tight contact preventing member 19 made of elastic body into the communicating portion 18, the communicating portion 18 is ensured as shown in FIG. 24(e), so the air chamber can expand substantially uniformly.

This tight contact prevention member is in the shape of a planar member in which longitudinal ribs are formed in the figure, but it may not be the shape shown in the drawing, but may be a cylindrical shape as long as it has a shape with moderate flexibility and elasticity to secure a passage. body etc.

Fig. 25 shows a fifth configuration example, which is an improved version of the air chamber communication method described above.

As shown in the figure, two overlapping bags are formed using two flexible sheets 11 having slightly different widths or one flexible sheet 11 having a different central width dimension. The separate use of these material sheets depends on the laminated structure of the composite sheet.

That is, for example, when using a PE-NY laminated sheet, it is necessary to overlap and weld the PE faces facing each other. At this time, in order to carry out welding of both end portions 22 in the step (e), it is necessary to adjust the width dimension of the two overlapping sheets so that the PE surface of the sheet located below is exposed. In the case of a PE-NY-PE laminate, this is not necessary.

Firstly, two flexible sheets 11 are overlapped or one flexible sheet 11 is folded in half, and then only the check valve 3 and the check valve installation part 20 on one side are welded continuously around. At this time, as shown in the figure, the weld line 21 in the height direction is at a position that enters a predetermined dimension from the left and right ends 22 . This dimension is half the dimension (d=D/2) of the spacing of the broken weld lines 23 in the center. In this way, the air chamber is formed at only one location of the opening, so leakage can also be prevented. In addition, by providing two parallel breaking weld lines 23 sandwiching the check valve mounting part 20, three air chambers (24A, 24B, 24C) are provided. The broken weld line 23 is in the form of a dotted line, and communicates with three air chambers at the non-welded portion.

At the end of the welding for forming the three air chambers, the check valve 3 is inserted into the opening 20 sandwiched by the broken welding line 23 and welded and fixed.

Then, as shown in (d), the flexible sheet 11 is folded in half, and the left and right ends 22 are aligned and welded.

As a material sheet, for example, in the case of folding a continuous sheet (roll sheet, etc.) in the width direction of (b) in the figure and using it, the folding position should be approximately in the width direction of the sheet (in the height direction of (b) in the figure). ), the folded upper and lower sheets have different widths, and are cut along the folding line, and the widthwise centers of the two sheets are aligned to reach step (c).

When using the inflatable cushioning package constituted in this way, air is injected from the check valve 3 as shown in FIG. The air chambers 24A, 24C, so, as shown in the figure (b), the air flows into the two air chambers equally. Therefore, the object 2 can be accommodated easily in the center part of this package.

Fig. 27 shows a sixth configuration example.

In the figure, two tubular flexible sheets are prepared, the sheet 6 is inserted into the sheet 7 to be superimposed, and two (total of four) broken welding lines 23 are provided in parallel at desired intervals at the opposing positions. Here, it is divided into four parts in the circumferential direction. The check valve 3 is clamped by the inner and outer pieces 6 and 7 at the end of the narrow portion clamped by the broken welding line 23, and the two ends of the cylindrical piece are welded to complete.

With such a configuration, as shown in FIG. 28 , the inflatable cushioning package is composed of air chambers that are all communicated.

When constituted as shown above, it is not necessary to use a pre-cut square sheet and a flexible sheet that has been formed into a tube, such as using a continuously manufactured sheet that is finally formed by a suitably configured welding and cutting process. For the same structure as the invention described in the claim, the method and structure of formation are not limited, and any technology that a person skilled in the art can think of can be substituted and applied.

The inflatable cushioning package of the present invention can not only fill the air chamber with air, but also various gases and liquids.

According to the present invention, it is possible to provide an inflatable body that can securely hold a conveyed article at a predetermined position by using a high-performance self-closing check valve without applying shock or large vibration to the conveyed article etc., and can be used regardless of the shape of the conveyed item.

In addition, the expansion body of the present invention can be easily folded after use, stored in a very compact form, and can be reused repeatedly by the outflow and inflow of other fluids, so it also plays a role in the protection of precious resources. Even when used repeatedly, the self-closing check valve has sufficient durability, so it can maintain its performance as a cushioning material for a long time.

Claims (7)

1. An inflatable cushioning package, which is an air bag, the air bag has at least a pair of opposite air chambers made of flexible sheets, the air chamber has an automatic check valve, and is sandwiched in the space of the opposite air chambers After the object is contained, the gas is filled into the air chamber, and the object is pushed and held by the expansion of the two opposing air chambers, and the object is characterized in that: The automatic check valve consists of a supporting body bent according to a specified curvature and an elastic member that can be in close contact with it to clamp both sides of an openable and closable channel body made of a flexible sheet. The channel body and the elastic material are clamped by the cover body and engaged by the engaging device, and the elastic material is pushed by the cover body in a state of bending along the support body with a prescribed curvature. When the channel body between the elastic material and the elastic material is deformed, the channel body is opened, and when the rod-shaped body is pulled out, the elastic material closely contacts the support body under the action of the restoring force to close the channel body; The pair of facing air chambers is formed by folding a flexible sheet in half and then welding the surroundings and folding it in half and then welding the overlapped parts of the ends. The smaller air chambers are spaced apart from the desired spacing, and the small air chambers connecting these opposing pairs of air chambers are formed spaced apart by weld lines interrupted by air passages arranged longitudinally of the package in dashed lines shape, thus forming the air pocket. 2 . The inflatable cushioning package according to claim 1 , wherein a pair of opposing air chambers are formed by sandwiching a double-folded flexible sheet between two flexible sheets and welding the surroundings. 3 . 3. The inflatable cushioning package according to claim 1, wherein the pair of facing air chambers are formed by sandwiching one flexible sheet folded in half with another flexible sheet folded in half and welding the surroundings. 4. The inflatable cushioning package according to claim 1, wherein a pair of opposing air chambers are formed by folding a tubular flexible sheet in half and welding the ends. 5. The inflatable cushioning package according to any one of claims 1-4, wherein an air passage bending prevention member is inserted into the air passage. 6. The inflatable cushioning package according to any one of claims 1-4, characterized in that: the sheet on the side of the outer skin in the flexible sheet constituting the inflatable cushioning package is more than the one on the side of the inner skin slice thick. 7. The inflatable cushioning package according to any one of claims 1 to 4, wherein the sheet on the side of the outer skin in the flexible sheets constituting the inflatable cushioning package is more than the sheet on the side of the inner skin. The mechanical strength of the sheet is high.

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