JP2007015703A - Bag body for preventing enclosure from being seen through - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag body such as an envelope or other bag bodies for transportation or the like which can preferably prevent enclosures from being carelessly seen through, in relation to the bag bodies such as the envelopes for mailing mainly consisting of a synthetic resin film, the bag bodies for transportation by private sector contractors such as mail services and home delivery services, and bag bodies directly put in a mailbox of each home by an individual visit, which are the bag bodies for sealing the enclosures and mailing and transporting it to receivers, and can prevent the enclosures from being seen through from the outside. <P>SOLUTION: The bag body for preventing the enclosure from being seen through, is equipped with a metal-deposited film on at least either one piece of a bag body 1. A synthetic resin-made film 6 coated with a white matte ink 7 is laminated on the metal-deposited film and is composed as at least either one piece of the bag body 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bag body for preventing see-through of inclusions, more specifically, a mail envelope mainly made of a synthetic resin film, a bag body for transportation by a private company such as mail service and courier service, or an individual visit. It is a bag for enclosing inclusions, such as bags that are posted directly to the mailbox of each household, and mailing, transporting, etc. to recipients, so that the inclusions can be prevented from being seen through from the outside. Related to the bag.

  Envelopes for mail made of synthetic resin film are transparent and can be seen through from outside. Gravure printing and offset printing can be used to make beautiful colored prints such as designs. It has various advantages over paper envelopes that it can be manufactured inexpensively. Since these advantages are particularly suitable for direct mail applications, the demand for synthetic resin envelopes has been widespread over the past decade with the spread of direct mail.

  However, in applications other than direct mail, for example, invoices, invoices, etc., there are many inclusions that interfere with the see-through from the outside. Silver, gray, brown, amber and the like are colored by printing for the purpose of preventing see-through.

  By the way, as a coloring ink for the purpose of preventing such see-through, an ink containing heavy metals or the like has been used in the past, and it is relatively easy for such ink to be seen through from the outside. Although suitably prevented, the use of ink containing such heavy metals has been abolished from the viewpoint of pollution. The colored ink currently used as an alternative cannot suitably prevent the inclusion from being seen through from the outside. In particular, in gravure printing, since a printing roll is rotated at a high speed, it is not possible to apply so much ink, and this is one factor that prevents the see-through of the inclusions from being suitably prevented. This is why the demand for paper envelopes is still high.

  For example, Patent Document 1 below is a patent application relating to a transparent film envelope, but Claim 2 describes that only a portion facing character information is colored so that it cannot be seen through. It is not intended to strictly prevent objects from being seen through.

JP 2003-221040 A

  On the other hand, mail-order companies that send direct mails, in recent years, collect information such as customer addresses, telephone numbers, and names by using personal information networks, etc., and mail them in film envelopes as described above. According to the Personal Information Protection Law, which came into effect on April 1, 2005, the collection of information such as personal addresses, telephone numbers, and names has been limited compared to the past. The demand for preventing see-through of the inclusions in the envelope made of synthetic resin is still stronger.

Also, in recent years, sent items such as documents are enclosed in a bag for transportation by private companies other than post offices such as mail and courier, or the inclusion is enclosed in a bag by individual visit. Although it may be directly posted to the mail box of each home, even in such a case, since a synthetic resin bag body is often used, it is sometimes required to prevent see-through of the encapsulated material.

  The present invention has been made in view of such points, and it is an object to provide an envelope or other bag for transportation that can suitably prevent inadvertent see-through of the above-mentioned inclusions. And

The present invention has been made to solve such a problem, and the invention according to claim 1 is characterized in that a metal vapor deposition film is provided on at least one piece of the bag body 1. According to a second aspect of the present invention, in the bag body according to the first aspect, the synthetic resin film 6 coated with the white mat ink 7 is laminated on the metal vapor-deposited film so that at least one piece of the bag body 1 is formed. It is configured.
The invention according to claim 3 is the bag according to claim 1 or 2, wherein the metal vapor-deposited film is an aluminum vapor-deposited film. Furthermore, in the invention described in claim 4, the bag body for preventing see-through of the enclosure according to any one of claims 1 to 3, wherein the one piece 1a and the other piece 1b of the bag body 1 are formed separately. It is characterized by. Further, the invention according to claim 5 is the opening confirmation means for confirming whether or not the opening of the bag body 1 is opened in the see-through prevention bag body according to any one of claims 1 to 4. Is provided. Further, the invention according to claim 6 is the sealing piece according to claim 5, wherein the opening confirmation means is formed by extending one piece 1a of the bag body 1 upward from the other piece 1b. 10 is a cut tape 24 provided so that the sealing piece 10 can be divided.

  As described above, since the present invention is such that at least one piece of the bag main body is provided with the metal vapor deposition film, the inclusion in the bag main body from one side of the bag main body provided with the metal vapor deposition film. This is preferably prevented from being seen through. Therefore, as compared with a conventional bag body such as an envelope colored simply with an ink for preventing see-through, the effect of preventing see-through is significantly improved, and a bag body such as an envelope suitable for confidential use can be provided.

  Further, there is an effect that it is possible to provide a bag body such as an envelope that further conforms to the Personal Information Protection Law that has been in effect since April 2005.

  Furthermore, when a synthetic resin film coated with white matte ink is laminated on a metal vapor-deposited film to form at least one piece of a bag body, offset printing suitable for a small variety of products such as envelopes is preferably performed. There is an effect that can be performed.

  That is, in the case of gravure printing, it is unsuitable for printing in a small amount and a variety of products, and offset printing is more suitable. However, in the case of offset printing, it is not easy to perform printing directly on a metal vapor deposition film. However, since the synthetic resin film coated with the white mat ink as described above is provided on the surface side of the metal vapor-deposited film, it is possible to perform a small amount and a variety of printings neatly and easily. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
1 to 4, 1 is a bag body used as an envelope, one piece 1a of the bag body 1 is formed of a multilayer film, and the other piece 1b of the bag body 1 is formed of a stretched polypropylene film. ing. As shown in FIGS. 1 and 2, one piece 1a of the bag body 1 is superposed with the other piece 1b of the bag body 1, and both side edges 2a, 2b of both pieces 1a, 1b of the bag body 1 are overlapped. The bottom edge 2c is formed into a bag shape by thermocompression bonding.

  As shown in FIG. 5, the multilayer film constituting one piece 1a of the bag body 1 is composed of an aluminum vapor-deposited film 5 in which aluminum 4 is vapor-deposited on a synthetic resin film 3 made of unstretched polypropylene, and a synthetic film made of stretched polypropylene. A white mat ink film 8 in which a white mat ink 7 is applied to a resin film 6 is laminated via an adhesive layer 9.

  Since the white mat ink film 8 is provided on the surface side of the piece 1a of the bag body 1 as described above, a destination address or the like can be displayed on the surface side of the piece 1a of the bag body 1 by writing or the like. . Although not shown, a zip code field, desired characters, designs, etc. are printed as necessary.

  10 is a sealing piece formed by extending one piece 1a of the bag body 1 above the opening 11 from the other piece 1b, and a release material 13 is provided on one surface side of the sealing piece 10 via an adhesive 12. Is provided. The piece 1a of the bag body 1 is constructed by laminating the aluminum vapor-deposited film 5 and the white mat ink film 8 as described above. However, the white mat ink film 8 is not provided in the sealing piece 10 portion. However, only the aluminum vapor deposition film 5 is provided, and the aluminum vapor deposition film 5 is exposed to the outside.

  And when using the bag body which is such a film envelope, after enclosing the content in the bag body 14, the release material 13 is peeled from the sealing piece 10, the sealing piece 10 is bent, and the adhesive 12 is used. The sealing piece 10 is adhered to the other piece 1b side of the bag body 1 through The bag 14 is sent from the sender to the receiver in such a state that the contents are enclosed.

  In this case, since the aluminum vapor-deposited film 5 is provided on the piece 1a side of the bag body 1, the inclusion in the bag body is seen through from the piece 1a side of the bag body 1 provided with the aluminum vapor-deposited film 5. This is preferably prevented.

Moreover, since the white mat ink film 8 is provided on the surface side of the aluminum vapor-deposited film 5, the address, name, etc. of the recipient can be suitably printed on the one piece 1a side of the bag body 1. That is, when there are not many recipients to be sent, it is preferable to use offset printing suitable for a small variety of products. In this case, it is difficult to print directly on the aluminum vapor-deposited film 5, but this embodiment Then, since the white mat ink film 8 is provided on the front side of the piece 1a of the bag body 1, the address, name, etc. can be suitably printed by offset printing.
On the other hand, since the other piece 1b side of the bag body 1 is made of a transparent stretched polypropylene film, the inside of the bag body 1 can be seen through from the other piece 1b side. However, if the enclosed material is a document for advertising purposes, it is not inconvenient to see through, but rather the document is placed with the display surface facing the other piece 1b so that it is intentionally seen through. In some cases, it may be required to be enclosed in 1.
Therefore, the bag as in the present embodiment has no problem even if the display content is seen through, or a document for advertising that is required to be seen through, and personal information that is required to prevent see-through. In such a case, a document that is required to be prevented from seeing through is placed on the one piece 1a side of the bag body 1, and there is no problem even if it is seen through. A document that is required to be prevented from seeing through is not covered with the other piece 1b and is not seen through from the other piece 1b. It can be encapsulated.

  Next, a method for manufacturing the bag body 14 as a film envelope having the above-described configuration will be described.

  First, as shown in FIG. 6, a long multilayer film sheet 15 composed of a multilayer film and a long film sheet 16 composed of a stretched polypropylene film are prepared. As described above, the multilayer film is composed of an aluminum vapor-deposited film 5 in which aluminum 4 is vapor-deposited on an unstretched polypropylene film 3 and a white mat ink film 8 in which a white mat ink 7 is coated on a stretched polypropylene film 6. It is constructed by laminating through the layer 9.

  In the white mat ink film 8 constituting the multilayer film, the white mat ink 7 is not applied to the seal portion 18. In this case, the white mat ink 7 is applied to a position excluding the seal portion 18 on the stretched polypropylene film 6, but the aluminum 4 is first deposited on the entire surface of the unstretched polypropylene film 3.

  The long multilayer film sheet 15 and the long film sheet 16 are formed to have a width corresponding to two in the length direction of the bag. Such a long multilayer film sheet 15 and a long film sheet 16 are wound up in a roll shape, and as shown in FIG. 6, they are drawn out and transferred from the wound state. The long multilayer film sheet 15 and the long film sheet 16 are polymerized.

  At this time, as shown in FIG. 6, the width of the long multilayer film sheet 15 is formed to be slightly wider than the width of the long film sheet 16, and the long multilayer film sheet 15 is replaced with the long film sheet 16. When it superposes | polymerizes, the elongate multilayer film sheet 15 protrudes as the extension piece 17 at both ends. And this extension piece 17 is a part which should become the sealing piece 10 of a bag, and the mold release material 13 is provided on the extension piece 17 via the adhesive agent 12.

  Next, as shown in FIG. 7, when the film envelope is formed, the polymerized long multilayer film sheet 15 and the long film sheet 16 become the bottom edge 2c and the side edges 2a and 2b. Thermocompression bonding at the position. As a result, the seal portion 18 having a predetermined width is formed.

  Next, as shown in FIG. 8, the portion of the seal portion 18 at the substantially longitudinal center of the polymerized long multilayer film sheet 15 and the long film sheet 16 is cut. As a result, two sets of long polymerization sheets 19a and 19b are formed.

  Next, as shown in FIG. 9, the thermally welded seal portion 18 is cut at predetermined intervals in the short direction. Thereby, a bag body as an envelope in which one piece 1a of a bag body 1 as shown in FIG. 1 is formed of a multilayer film including an aluminum vapor deposition film 5 and the other piece 1b is formed of a single layer film is continuous. And it will be manufactured automatically. In addition, as described above, since the long multilayer film sheet 15 is wider than the film sheet 16 and the sheets 15 and 16 are polymerized in a state where the long multilayer film sheet 15 protrudes, the protruding portion becomes the sealing piece 10. Will be formed.

  When cutting the portion of the seal portion 18 in the longitudinal direction and the short direction as described above, the white mat ink 7 is removed in the portion of the seal portion 18 in the multilayer film sheet 15 as described above in this embodiment. Therefore, there is no occurrence of a so-called whisker-like fine protruding portion of the film at the edge of the bag body that has been fused and sealed by a hot plate or the like. That is, if the white mat ink 7 exists in the seal portion 18, the ink melts and adheres to the hot plate at the time of fusing sealing, and the fine protruding portion may be generated. However, the white mat ink 7 does not exist. Such a fine protruding portion does not occur.

  As described above, in the present embodiment, since the aluminum vapor deposition film 5 is provided on the one piece 1a side of the bag main body 1, the inside of the bag main body from the one piece 1a side of the bag main body 1 provided with the aluminum vapor deposition film 5 is provided. The inclusion is preferably prevented from being seen through, and the see-through preventing effect is significantly improved as compared with a conventional envelope simply colored with a see-through preventing ink. In addition, since the other piece 1b side of the bag body 1 is transparent, the inclusion is seen through as it is, but the document or the like is placed in a state where the characters to be concealed face the one piece 1a side of the bag body 1. If the inclusion is enclosed, the purpose of preventing fluoroscopy will be achieved.

(Embodiment 2)
In the present embodiment, not only the one piece 1a side of the bag body 1 but also the other piece 1b side of the bag body 1 is opaque, and in this respect, the other piece 1b side of the bag body 1 is formed to be transparent. This is different from the case of the first embodiment. That is, in this embodiment, the multilayer film constituting the other piece 1b of the bag body 1 is also a synthetic resin film made of unstretched polypropylene as shown in FIG. An aluminum vapor-deposited film 5 in which aluminum 4 is vapor-deposited on 3 and a white mat ink film 8 in which white mat ink 7 is coated on a synthetic resin film 6 made of stretched polypropylene are laminated via an adhesive layer 9. Has been.

  In this embodiment, since the aluminum vapor deposition film 5 is provided not only on one piece 1a of the bag body 1 but also on the other piece 1b in this way, from either side of the front and back both pieces 1a, 1b of the bag body 1. The inclusions are not seen through at all. Therefore, it is possible to prevent see-through more reliably, and it is possible to provide an envelope that is more suitable for confidential use than the first embodiment. That is, it is possible to suitably use the bag according to the present embodiment when there is no document for advertising and there is a demand for confidentiality for all enclosed documents.

  The effect at the time of printing due to the provision of the white mat ink film 8 occurs in the same manner as in the first embodiment.

(Embodiment 3)
Also in the present embodiment, both the one piece 1a and the other piece 1b of the bag main body 1 are formed to be opaque, and the basic configuration of the second embodiment and the bag main body 1 is common in this respect. In this embodiment, as shown in FIG.11 and FIG.12, the cut piece 24 for parting this sealing piece 10 is further provided in the sealing piece 10 of the upper part of the bag main body 1, and the cut concerning this point is provided. This is different from the second embodiment in which the tape 24 is not provided. In addition, cut portions 26 and 26 serving as starting points for tearing the cut tape 24 are formed on one side edge side of the sealing piece 10. Further, as in the first and second embodiments, the white mat ink film 8 is not provided on the sealing piece 10, and the aluminum vapor-deposited film 5 is bare on the outer surface side.

  In this embodiment, after the recipient receives the sealed envelope as shown in FIG. 13 and FIG. 14, when the envelope is opened, the notches 26 and 26 are used as starting points as shown in FIG. 15. The cut tape 24 is opened by tearing. When the cut tape 24 is torn in this way, the opening 11 of the bag body 1 can be removed as shown in FIGS. 16 and 17 without removing the sealing piece 10 from the other piece 1b side of the bag body 1 via the adhesive 12. Will be opened, and the inclusion can be taken out from the inside of the bag body 1.

Further, in this case, since the white mat ink film 8 is not provided on the sealing piece 10 and the aluminum vapor-deposited film 5 is bare on the outer surface side, the cut tape 24 is torn and the bag is formed as described above. When the body 14 is opened, the remaining piece 25 of the sealing piece 10 remaining on the other piece 1b side of the bag body 1 through the adhesive 12 after opening is the aluminum vapor deposited film 5, and slightly above the remaining piece 25. Since the surface side of the other piece 1b of the bag body 1 that is bare is composed of the white mat ink film 8, the remaining piece 25 made of the aluminum vapor-deposited film 5 is formed on the white mat ink film 8 in the opened state. It can be easily confirmed by the remaining state. Also,
By tearing the cut tape 24 as described above, the remaining protruding piece 27 remains on the one piece 1a side of the bag body 1 as shown in FIGS. In other words, the sealing piece 10 is divided into the remaining piece 25 and the remaining protruding piece 27 by tearing the cut tape 24, and cannot be repaired.

Therefore, if a third party other than the recipient unjustly opens the envelope, the fact that the unsealed opening has been made is easy due to the opened state in which the white mat ink film 8 and the aluminum vapor-deposited film 5 are mixed. It is possible to grasp. Moreover, by adopting the cut tape 24 that cannot be repaired as described above as an opening confirmation means,
Unauthorized opening as described above is prevented in advance.

Thus, in the present embodiment, the cut tape 24 provided on the sealing piece 10 not only functions as an opening means, but also the fact that the envelope has been unjustly opened by a third party other than the recipient. It can also function as an opening confirmation means for easily confirming.
In addition, since the cut tape 24 is used as the opening means, the bag body 1 can be opened and the opening 11 can be opened without peeling off the sealing piece 10 against the adhesive force of the adhesive. Thus, it is possible to provide an envelope more suitable for confidential use.

  Since the configuration of the bag body 1 other than the cut tape 24 is the same as that of the second embodiment, the description thereof is omitted.

(Embodiment 4)
This embodiment is an embodiment of an envelope provided with a file that can be cut. That is, in this embodiment, as shown in FIG. 18 and FIG. 19, the cut line 20 is formed in a state of being disposed in a reverse L substantially L shape on both the one piece 1 a and the other piece 1 b of the bag body 1. Yes. Since the configuration of the one piece 1a and the other piece 1b of the bag body 1 is the same as that of the first embodiment, the description thereof is omitted.

  In this embodiment, the inclusion is enclosed in the bag body 1 by the sender, and the envelope that is the bag is sent to the receiver. When the receiver who has received this takes out the enclosed material enclosed in the bag body 1, the intended use as an envelope is achieved. In this embodiment, however, the receiver further has the above substantially reverse L-shape. The remaining portion 21 can be used as the file 22 by cutting off the cut line 20 disposed in and removing the remaining piece 21 as shown in FIG.

  That is, when the cut line 20 is cut off, the left and right edges 2b and 2c of the front and back pieces 1a and 1b of the bag body 1 are thermocompression bonded as shown in FIG. That is, the file 22 having an opening 23d is formed.

  Therefore, even after the recipient receives the envelope and takes out the enclosed material, it can be used for storing documents as the file 22 as described above, and therefore it is necessary for the recipient to discard the envelope after reception. It can be used effectively. And it is preferable from the viewpoint of environmental protection to effectively use an envelope made of a synthetic resin film as a file without being discarded.

(Embodiment 5)
This embodiment is an embodiment of an envelope provided with a file that can be cut out as in the fourth embodiment.

  However, in this embodiment, not only the side edges 2a, 2b and the bottom edge 2c of both the pieces 1a, 1b of the bag body 1 but also the upper edge 2d as shown in FIG. Thus, the third embodiment is different from the third embodiment in which the opening 11 and the sealing piece 10 are formed on the upper edge side. That is, the envelope of the present embodiment is so-called in which the side edges 2a, 2b, the bottom edge 2c, and the upper edge 2d are thermocompression bonded while the contents are sealed between the two pieces 1a, 1b of the bag body 1. This is an envelope for automatic sealing.

  Therefore, once the envelope is opened after the receiver receives it, it is difficult to store the document or the like compared to the envelope provided with the sealing piece, but in this embodiment, it is shown in FIG. Since the cut line 20 is formed as described above, the remaining part 21 is removed as shown in FIG. 22, and the remaining part can be used as the file 22 as in the fourth embodiment.

  Therefore, as in the fourth embodiment, it is possible to effectively use the envelope after receiving and taking out the inclusion.

(Other embodiments)
In the above embodiment, a stretched polypropylene film is used as the synthetic resin film 6 constituting the other piece 1b of the bag body 1. However, an unstretched polypropylene film can also be used. In addition to polypropylene, a polyethylene film can also be used. However, the degree of transparency is higher for stretched films than unstretched, and polypropylene films are superior to polyethylene.

  Further, in each of the above embodiments, the white mat ink film 8 is provided in addition to the aluminum vapor-deposited film 5 on the one piece 1a and the other piece 1b of the bag main body 1. However, the provision of the white mat ink film 8 is included in the present invention. This is not a requirement. However, the provision of the white mat ink film 8 has an advantage that it is possible to suitably perform offset printing for a small amount and a variety of products as described above, and is not limited to offset printing, but when performing gravure printing. However, the presence of the white matte ink has the effect that the color of the printing ink appears clearly and printing can be performed beautifully.

  Furthermore, in the said embodiment, although the sealing piece 10 was formed by extending one piece 1a of the bag main body 1 from the other piece 1b, contrary to this, the other piece 1b was extended from the one piece 1a, and the sealing piece 10 was formed. May be.

  Furthermore, in the said embodiment, although the adhesive agent 12 and the mold release material 13 were provided in the sealing piece 10, you may provide in the bag main body 1 side, without providing in the sealing piece 10. FIG. Furthermore, the sealing piece 10 may be sealed by means such as an adhesive tape without applying the adhesive 12. Furthermore, in the said embodiment, although the predetermined welding part was formed by heat welding, it is also possible to form a welding part not only by heat welding like this embodiment but by ultrasonic welding.

Furthermore, in the said embodiment, although the cut tape 24 was provided in the sealing piece 10 as an opening confirmation means combined with the opening means of the bag body 14, as an opening means of the bag body 14, in addition to such a cut tape 24, For example, a perforation or the like can be adopted as the opening means, and other means can also be adopted, and the means is not questioned.
Furthermore, although the said embodiment demonstrated the case where the cut tape 24 was provided in the bag body which comprises the sealing piece 10 as an opening confirmation means combined with the opening means of the bag body 14, the bag which comprises such a sealing piece 10 For example, the present invention can be applied to an envelope for automatic sealing as shown in the fifth embodiment. However, since the cut tape 24 is provided, the cut line 20 as in the fifth embodiment is unnecessary, and therefore, it is used as a suitable envelope for general automatic sealing and sealing rather than intended to be used as the file 22. can do.

  In addition to the cut tape 24 of the above embodiment, for example, the matte ink is applied to the other piece 1b side of the bag body 1 to which the sealing piece 10 is adhered, and the sealing piece 10 is peeled off after the sealing piece 10 is peeled off. It is also possible to adopt means that allows the colored mat ink to be partially peeled off and confirm the opened state. Furthermore, it is possible to employ other opening confirmation means, and the type of the opening confirmation means is not questioned.

  The provision of such opening means and opening confirmation means is very preferable for confidential envelopes that are required to maintain confidentiality in accordance with the enforcement of the Personal Information Protection Law. However, providing such an opening means and an opening confirmation means is not an essential condition for the present invention.

  Further, in the above embodiment, printing on the bag body is performed by offset printing. However, the printing is not limited to offset printing, and printing by other printing means such as flexographic printing or gravure printing is also possible. Any type. However, in the case of a small variety of products, it is preferable to perform offset printing using an envelope having a multilayer film in which the white mat ink film 8 is laminated on the aluminum vapor-deposited film 5 as described above.

  On the other hand, when printing a large amount of envelopes having the same printing contents, gravure printing suitable for mass production can be used more favorably. In this case, it is possible to perform printing directly on the aluminum vapor-deposited film 5 without the white mat ink film 8.

  Further, in the above embodiment, the three sides of the side edges 2a and 2b and the bottom edge 2c of the one piece 1a and the other piece 1b of the bag body 1 are configured to be directly thermocompression-bondable. The means that can be configured is not limited to the means that directly thermocompression-bonds as in the embodiment. For example, the side edges 2a and 2b and the bottom edge 2c of the one piece 1a or the other piece 1b of the bag body 1 have a predetermined width. By providing an adhesive that can be thermally bonded as described above, or by providing a resin layer on the inner surface side of one piece 1a of the bag body 1, the side edges 2a, 2b and the bottom edge 2c are connected to each other via the adhesive or resin layer. Thermal bonding is also possible.

  Furthermore, in the said embodiment, although the one piece 1a and the other piece 1b which comprise the bag main body 1 were comprised by the separate film, it is not restricted to this, The one piece of film is bend | folded in a folded state, and the bag main body 1 It is also possible to configure.

However, in this case, when the aluminum vapor-deposited film 5 is provided on both the front and back pieces 1a and 1b, there is no problem in rationalizing the manufacturing process, but the aluminum vapor-deposited film 5 is provided only on the single piece 1a. In this case, aluminum deposition cannot be performed on only half of one film folded in half, and aluminum deposited on the half of the film corresponding to the other piece 1b side after performing aluminum deposition on the entire surface. Must be removed by pasta processing, a loss in the manufacturing process cannot be ignored, and the manufacturing cost is high. Therefore, when only the piece 1a of the bag body 1 is provided with the aluminum vapor-deposited film 5 as in the first embodiment, the bag body is manufactured using two separate long films as in the present embodiment. It is preferable. That is, by constituting the one piece 1a and the other piece 1b of the bag body 1 with separate films, there is an effect that the manufacturing process loss as described above can be prevented and the manufacturing cost can be reduced.

In addition, it can replace with the aluminum vapor deposition film 5 like the said embodiment, and can also use the metal vapor deposition film which vapor-deposited metals other than aluminum. However, the aluminum vapor-deposited film has an effect of preventing oxidation and has an effect of maintaining gloss because it has little fear of discoloration, and is suitable for use as a film constituting a bag body.

  In addition, the aluminum vapor deposition film is narrowly defined as a film in which aluminum powder is dispersed and deposited on the film. However, the present invention is not limited to this. For example, a film in which an aluminum foil is spread on a film can be used. It is. That is, the metal vapor deposition film in the present invention has a broad meaning including not only a narrow vapor deposition film using metal powder but also a metal foil.

  The present invention is mainly intended to apply the bag body 1 to a transparent synthetic resin bag body from the viewpoint of preventing see-through by a metal vapor deposition film such as the aluminum vapor deposition film as described above. It can be applied to a bag body in which one piece 1a of the bag body is a paper sheet and the other piece 1b of the bag body is a synthetic resin film, and both the pieces 1a and 1b of the bag body are made of paper. It is also possible to apply to a bag body made up of the above sheet.

In these cases, for example, the bag body 1 is configured by laminating an aluminum vapor deposition film on the inner surface side of a paper sheet. Even if it is a paper sheet, there is a risk of seeing through the inclusions in the case of thin paper, so by providing an aluminum vapor deposition film, it is possible to prevent see-through like a bag made of synthetic resin film There is a real benefit to give effect. On the other hand, letters or the like can be written on a paper sheet, and printing can be performed relatively favorably. Therefore, it is not necessary to use the white mat ink as described above.
Further, when a paper sheet is provided, when the sealing piece is peeled off, the fiber of the paper constituting the sealing piece or the bag main body facing the sealing piece can be detached to confirm the opening.

  Furthermore, although the case where the bag body is applied to a film envelope has been described in the above embodiment, the type of the bag body of the present invention is not limited to the film envelope of the embodiment, and for example, a bag body for air mail or a mail service It can also be used for bags for transportation such as courier and courier. Furthermore, the present invention can be applied to such a bag body other than for mailing or transportation, and the use of the bag body of the present invention is not questioned.

The front view of the bag of one embodiment. The rear view. AA sectional view taken on the line AA of FIG. FIG. 3 is a sectional view taken along line BB in FIG. 1. The C section expanded sectional view of FIG. It is a manufacturing method of the bag object of one embodiment, and is a top view of a process of preparing a long multilayer film sheet and a long film sheet. The top view of the process of heat-welding the predetermined position of a elongate multilayer film sheet and a elongate film sheet, and forming a seal part. The top view of the process of cut | disconnecting the approximate center of a elongate multilayer film and a elongate film sheet. The top view of the process of cut | disconnecting a seal part. The principal part expanded sectional view of the bag body of other embodiment. The front view of the bag body of other embodiment. The rear view. The rear view of an enclosed state. The DD sectional view taken on the line of FIG. The rear view which shows the state which tears a cut tape. The rear view of the opened state of the bag body. EE sectional view taken on the line of FIG. The front view of the bag body of other embodiment. The rear view. The front view of the state which cut out the file from the bag of FIG. The front view of the bag body of other embodiment. The front view of the state which cut out the file from the bag of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Bag main body 1a ... One piece 1b ... Other piece 5 ... Aluminum vapor deposition film 6 ... Synthetic resin film 7 ... White mat ink 8 ... White mat ink film 24 ... Cut tape

Claims (6)

  A bag body for preventing see-through of an enclosure, wherein a metal vapor-deposited film is provided on at least one piece of the bag body (1).   2. The enclosure according to claim 1, wherein the synthetic resin film (6) coated with the white mat ink (7) is laminated on the metal vapor-deposited film to constitute at least one piece of the bag body (1). Perspective prevention bag.   The bag for preventing see-through of an enclosure according to claim 1 or 2, wherein the metal vapor-deposited film is an aluminum vapor-deposited film (5).   The bag body for preventing see-through of an enclosure according to any one of claims 1 to 3, wherein one piece (1a) and the other piece (1b) of the bag body (1) are formed separately.   The bag body for preventing see-through of an enclosure according to any one of claims 1 to 4, further comprising an opening confirmation means for confirming whether or not the opening of the bag body (1) has been opened.   An opening confirmation means is provided on the sealing piece (10) formed by extending one piece (1a) of the bag body (1) upward from the other piece (1b) so that the sealing piece (10) can be divided. The body for preventing see-through of an enclosure according to claim 5, which is a cut tape (24).

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