JPH0544289Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a cushioning packaging bag for sending goods for safely transporting and delivering stored goods without damaging or destroying them.

(Prior Art) Conventionally, this type of cushioning packaging bag has, for example, an air supply/discharge port provided with a check valve, and an air supply/discharge port provided oppositely in communication with the air supply/discharge port. A cushioning packaging bag made of plastic film is known, which includes a filling storage part and an article storage part having an insertion/ejection opening formed between the air filling storage parts.
In addition, although it is not yet known, in the above-mentioned buffer packaging bag, there is a buffer packaging bag (actually Application No. 63-58619) has been proposed.

(Problem to be solved by the invention) However, in any of the above conventional examples, since the entire cushioning packaging bag is made of plastic film, when an address etc. is written on the surface, the display There is a problem that the contents are easily lost due to rainwater, etc., and the damage resistance is weak, so if it is subjected to damage from the outside, especially puncture damage, it will instantly tear and the sealed air will leak out, making it impossible to provide the intended buffer. There is a problem with losing one's sexuality.

In addition, in the former case, due to the flexibility and elasticity of the plastic film, when it is filled with air, it tends to swell to an unnecessarily high volume, causing various inconveniences in handling.To prevent this, the latter There is a problem in that it requires a complicated process of gluing the air filling and storage portion in a linear or spot shape.

Furthermore, in both cases, since the insertion/ejection opening of the article storage section remains open, there is a problem that the stored article may unexpectedly deviate from the insertion/ejection opening during handling. .

The present invention was developed with the aim of solving the above-mentioned problems, and it is possible to write addresses, etc. reliably regardless of the type of writing instrument, and
Even when filled with air, it does not swell to an unnecessarily high volume, has good damage resistance against external forces, and has the advantages of being able to reliably prevent stored items from slipping out of the insertion/ejection opening. Therefore, it is an object of the present invention to provide a shock-absorbing packaging bag for sending goods that is suitable for directly sending goods as a postal parcel.

(Means for Solving the Problems) As a means for solving the above problems and achieving the objectives, the present invention provides air between the outer bag and the inner bag that communicates only at the bottom sides of both bags. For sending goods, the filling and enclosing parts are formed facing each other, and the inside and outside of the filling and enclosing parts are configured to be communicated only through a check valve, and the inner bag forms a storage part for the article equipped with an insertion and removal port. It is a cushioning packaging bag, and the outer bag is made of an airtight sheet made of tough paper such as kraft paper with a plastic layer formed on the inner surface, and the inner bag is made of an airtight plastic film. We have developed and adopted a cushioning packaging bag for shipping, which has a covering piece for the insertion/ejection port extending from the mouth edge and an adhesive layer on the inner surface of the covering piece.

Furthermore, in the present invention, in the shock-absorbing packaging bag for shipping configured as described above, the plastic film of the inner bag is extended to form a cover/closing piece for the insertion/ejection opening, thereby constructing the cushioning packaging bag for shipping. Similarly, the plastic film of the inner bag and the sheet of the outer bag are extended together to form a cover/closing piece for the insertion/ejection opening to construct a shock-absorbing packaging bag for shipping.

Furthermore, in the present invention, in the cushioning packaging bag for shipping configured as described above, a release paper is pasted on the surface of the adhesive layer provided on the inner surface of the cover piece of the insertion/ejection opening. This is a plastic packaging bag.

(Function) As described above, in the shock-absorbing packaging bag for shipping according to the present invention, the outer bag is made of an airtight sheet with a plastic layer formed on the inner surface of a tough paper such as kraft paper. Due to the shape retention (non-deformability) of paper, even if the air-filled sealing part formed between the outer bag and the inner bag is filled with air,
The degree of inflation of the outer bag is regulated within a certain range, which has the effect of preventing it from becoming more bulky than necessary. Furthermore, due to the writability of paper, the address, name, and other necessary information of the sender and recipient of the original packaging bag can be written on the surface of the outer bag using any writing instrument.

Furthermore, after storing the required items in the storage section,
When the cover piece extending over the insertion/ejection opening is bent inward and brought into contact with the outer bag, it will be stuck by the adhesive layer provided on the inner surface of the cover piece, and the insertion/ejection opening will be securely covered and stored. It has the effect of preventing items from escaping.

Furthermore, if release paper is pasted on the surface of the adhesive layer of the covering piece, the adhesive layer can be protected and other objects can be prevented from adhering to the adhesive layer.

(Example) Below, an example of the present invention will be described based on the attached drawings. The shock-absorbing packaging bag for shipping according to the present invention can be roughly divided into an outer bag A, an inner bag B, and a check valve C. It consists of

Therefore, the outer bag A is a tough paper 1 made of kraft paper.
20μ thick polyethylene layer 2a, 15μ thick nylon layer 2b, 60μ thick polyethylene layer 2c on the inner surface of
It is made up of an airtight sheet 3 made of a thermoplastic (heat-fusible) plastic layer 2 which is successively coated, and the inner bag B is made of a 90μ thick polyethylene film 4. In addition, check valve C is made of 80μ thick polyethylene film 5.
The structure of the shock-absorbing packaging bag for shipping shown in the embodiment diagrams of FIGS. 1 to 4, 6, and 7 is schematically shown in A, B, and C of FIG. This will be explained below in connection with the manufacturing process diagram.

First, as shown in FIG.
is folded in half so that the end of one folded piece is slightly longer than the end of the other folded piece, and a protruding extra piece 4a is formed at the end of one folded piece.

Next, as shown in FIG. The two sheets 3, 3 for the outer bag A, which are long and have the same width, are overlapped with each other with the plastic layer 2 facing inside, and
Align the tips of the sheets 3, 3 with the tips of the shorter bent pieces of the polyethylene film 4 for the inner bag B, and then insert the sheet 3 for the outer bag A on the lower side toward the same figure. and the longer bent piece of the polyethylene film 4 for the inner bag B, a flat check valve C, which will be described later, is formed from the polyethylene film 4.
The supply/discharge port _C1 is interposed so as to protrude to the outside.

Thereafter, as shown in FIGS. 1 to 4 and C in FIG. The plastic layers 2, 2 of both sheets 3, 3 for the inner bag B and the polyethylene films 4, 4 for the inner bag B are integrally fused together, and a similar adhesive means is applied to the bottom edge b of the inner bag B to form the bottom. The plastic layers 2, 2 of both sheets 3, 3 for the outer bag A at the side edge b are integrally fused (at this time, since the polyethylene film 4 for the inner bag B is located slightly above, the plastic layers 2, 2 are fused together). Furthermore, the plastic layer 2 of the sheet 3 for the outer bag A and the polyethylene film 4 for the inner bag B on one side of the overlapping part at the upper edge c are fused together by the same adhesive means, The plastic layer 2 of the sheet 3 for the outer bag a and the polyethylene film 4 for the inner bag B on the other side of the upper edge c.
(the longer bent piece), and both the front and back sides of the plastic film 5 of the check valve C inserted between the polyethylene film 4 and the plastic layer 2 of the sheet 3 for the outer bag A are fused by the same adhesive means. Wear it,
An inner bag B is placed inside an outer bag A, and a communication portion 6 is formed between the outer bag A and the inner bag B on the bottom side of both bags A and B.
Air filling and sealing parts 7, 7 that communicate with each other are formed opposite each other, and an article insertion/removal opening 8 is provided in the inner bag B.
A shock absorber for sending goods, which forms a storage section 9 for articles, and communicates the inside and outside of the air filling and sealing section 7 only through the check valve C inserted into the rim of the insertion/removal port 8. In the figure, reference numeral 10 denotes a cover/closing piece for the insertion/ejection opening 8 consisting of a protruding extra piece 4a of one folded piece for the inner bag B formed at the mouth edge of the insertion/ejection opening 8; 12 is a release paper pasted on the surface of the adhesive layer 11; 13 is a bottom of the inner bag B; This figure shows the fused parts where the two parts are partially bonded.

11 and 12 show another embodiment of the present invention, and the difference from the above embodiment is that the check valve C is connected to the side edge c of the bag body other than the mouth edge of the insertion/removal port 8. If the check valve C is inserted into the side edge c or the bottom edge b, the covering piece 9 can be attached to the sheet 3 for the outer bag A and the plastic film for the inner bag B. 5, it can be formed double, so its strength can be further increased.

Next, FIGS. 9 and 10 are a perspective view and an exploded perspective view of an example of a flat check valve made of plastic film used in the present invention, which includes a fluid flow pipe 14 of a required length, It consists of a valve body 15 installed in the flow pipe, and this valve body 15
is composed of a two-fold piece of plastic film made of the same material as the flow tube 14, which has a closed portion 16 on the distal end side and an open portion 17 on the proximal end side in the flow direction of the fluid flowing through the flow tube 14. A gap 18, 18 is formed between both inner surfaces of the flow pipe 14 and both outer surfaces of the valve body 15, so that fluid can flow through the gap, as shown in the figure. , 19 are connected to the flow pipe 1 in order to more reliably perform the fluid discharge prevention action (check valve action).
4 and both outer surfaces of the valve body 15 are partially bonded at one place, and 20 indicates an insertion guide piece for the nozzle of the air supply device. As shown in Fig. 9, both side edges 21, 2
It is formed by fusing 1.

According to the shock-absorbing packaging bag for shipping of each embodiment constructed as described above, the shock-absorbing article M is inserted into the storage section 9 through the insertion/removal port 8 of the article, and the covering piece 10 is folded inward. , after adhering to the surface of the packaging bag with the adhesive layer 11 to cover and close the insertion/removal port 8, check valve C
When air is supplied from the air supply/discharge port of , the supplied air passes through the check valve C as shown by the arrow in Figure 1.
Gap 18 and communication section 6 provided on the bottom side of the packaging bag
Air is introduced into both the filling and enclosing parts 7, 7 through the air, and as shown in FIG. At this time, since both the outer bag A and the inner bag B are airtight, the enclosed air will not leak out. Because it is constructed using tough paper 1,
Unlike the conventional products mentioned above, it does not become unnecessarily bulky and swollen. Therefore, the state of expansion can be maintained at a constant size without using any expansion control means, and there is no problem in handling mailing or the like.

In addition, since the surface of this packaging bag is made of strong paper 1 as described above, it is possible to write addresses, names, etc. regardless of the type of writing instrument, and it can be used as a cushioning packaging bag for mailing. In addition to being optimal, the insertion/ejection opening 8 for the article M is provided with the cover piece 1 provided with the adhesive layer 11.
0 can be easily and reliably covered and closed, so that it is possible to reliably prevent stored items M from accidentally escaping from the insertion/ejection opening 8 during handling such as mailing.

(Effects of the invention) Since the present invention has the above-mentioned configuration and is used in the above-described manner, it can produce the following effects that are significantly superior to the conventional techniques described above. be.

(1) Not only does it have good cushioning properties and can safely deliver items that require cushioning, but the outer bag is made of an airtight sheet with a plastic layer formed on the inner surface of tough paper such as kraft paper. Due to the shape retention (non-deformability) of tough paper, the degree of inflation of the outer bag remains constant even if the air-filling part formed between the outer bag and the inner bag is filled with air. It is controlled within the range, can prevent unnecessarily bulky expansion, and is easy to handle by mail and cargo.

(2) Since the surface is made of paper, the writability of paper makes it possible to remove the sender's address, name, and other necessary information of the recipient, no matter what writing instrument is used. You can write on the surface of the bag, making it ideal as a cushioning packaging bag for shipping.

(3) After storing the required items in the storage compartment, if the cover piece extended to the insertion/ejection opening is bent inward and abuts against the outer bag, the adhesive layer provided on the inner surface of the cover piece It is possible to reliably cover and close the insertion/ejection port and reliably prevent the stored articles from escaping.

(4) By pasting release paper on the surface of the adhesive layer of the covering piece, the adhesive layer can be protected and other objects can be reliably prevented from adhering to the adhesive layer.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is a partially omitted enlarged sectional view taken along the line - in FIG. 1, and FIG. An abbreviated enlarged sectional view, Fig. 4 is the − of Fig. 1.
5 is an enlarged sectional view showing a part of the sheet for the outer bag; FIG. 6 is a perspective view showing a state in which the article is wrapped and filled with air; FIG. 7 is an enlarged sectional view taken along the line;
The figure is an enlarged sectional view taken along the - line in Figure 6.
Figures A, B, and C are schematic explanatory diagrams showing the manufacturing order of this packaging bag, Figure 9 is a perspective view showing an example of a check valve, Figure 10 is an exploded perspective view thereof, and Figure 11 is another embodiment. A plan view showing an example, FIG. 12 is the − of FIG. 11.
It is a partially omitted enlarged sectional view taken along the line. Explanation of codes, A... Outer bag, B... Inner bag, C...
Check valve, 1...Tough paper, 2...Plastic layer,
3...Sheet, 5...Plastic film, 7
...Air filling and sealing part, 8...Article insertion/ejection port, 9
... Article storage section, 10 ... Covering piece, 11 ... Adhesive layer, 12 ... Release paper.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Air filling and sealing parts that communicate only on the bottom sides of both bags are formed facing each other between the outer bag and the inner bag, and check valves are provided between the inside and outside of the filling and sealing parts. This is a shock-absorbing packaging bag for sending goods, which is constructed so that communication is possible only through the inner bag, and the inner bag forms a storage section for goods with an insertion/removal port, and the inner bag is made of tough paper such as kraft paper and has a plastic layer on the inner surface. An outer bag is formed from an airtight sheet formed with a plastic film, an inner bag is formed from an airtight plastic film, and a covering piece for the insertion/ejection opening is extended to the rim of the insertion/ejection opening, and the covering piece is A cushioning packaging bag for shipping, characterized by having an adhesive layer provided on the inner surface of each piece. (2) The shock-absorbing packaging bag for shipping items according to claim 1, characterized in that the plastic film of the inner bag is extended to form a covering piece for the insertion/ejection opening. (3) The shock-absorbing packaging bag for shipping items according to claim 1, characterized in that the plastic film of the inner bag and the sheet of the outer bag are both extended to form a covering piece for the insertion/ejection opening. (4) The shock-absorbing packaging bag for shipping items according to claim 1, 2 or 3, characterized in that a release paper is adhered to the surface of the adhesive layer provided on the inner surface of the cover piece of the insertion/ejection opening.