JP5704628B2 - Mattress storage bag made of flexible polyurethane foam - Google Patents

Description

  The present invention relates to a storage bag for mattresses made of flexible polyurethane foam.

Conventionally, it has been known that flexible polyurethane foam (hereinafter sometimes referred to as foam) turns yellow (yellowing) due to sunlight (ultraviolet rays) or nitrogen oxides (NOx) in the atmosphere. In order to prevent yellowing due to ultraviolet rays or NOx, measures such as adding an ultraviolet absorber or the like to the foam raw material or replacing an aromatic compound that causes yellowing with a fatty acid compound may be taken. Alternatively, a colorant is added to the foam raw material to color the foam itself, thereby making discoloration such as yellowing inconspicuous. In addition, a phenol-based stabilizer is added to the urethane foam raw material, and this stabilizer is also said to be a causative substance that reacts with NOx and yellows.
On the other hand, as a storage bag for storing futons, as a storage bag that can be easily viewed at stores, etc., the folded futons are put into and out of a bag that can form a rectangular parallelepiped or a bag-like space inside the bag. There is known a technique (see, for example, Patent Document 1) in which a zipper that can be used is provided and at least the front portion of the bag is made of a transparent material.

JP 2004-42972 A

  By the way, also in the case of the storage bag which accommodates the mattress made from the conventional flexible polyurethane foam, a part of bag body is often opened and closed by a fastener part, In the case of such a storage bag, the mattress accommodated Among them, there was a problem that only the portion corresponding to the fastener portion may turn yellow. As a result of searching for the cause, it appears that this is due to the reaction between the stabilizer in the foam and NOx in the air that has entered through the gaps between the fasteners. It turns out that the degree to do is high.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to prevent yellowing such as streaks from occurring in a portion corresponding to a fastener portion in a flexible polyurethane foam mattress or the like stored in a storage bag that can be opened and closed at the fastener portion.

In order to achieve the above object, the present invention provides a storage bag made of an airtight material for storing a mattress made of flexible polyurethane foam, and the storage bag has a substantially rectangular parallelepiped airtight material having an opening on one side. And a lid made of an airtight material having a substantially rectangular parallelepiped shape that closes the opening, and is openably and closably connected by a fastener portion, and the inner side of the fastener portion provided in the bag body Is provided with a covering member having excellent airtightness, and the covering member is a single piece that is fixed in a tongue shape along the fastener portion and is continuous over the entire length of the fastener portion, The length of the covering member in the width direction is at least twice the width of the fastener in a state where both fasteners are connected. When the mattress is stored in the storage bag, the fastener portion is covered with the covering member. like It was.

When the mattress is stored in a storage bag made of an airtight material such as a synthetic resin film, the covering member blocks the gap where the air in the fastener portion can flow, so that NOx in the atmosphere is in the foam. Suppresses reaction with stabilizers and prevents yellowing.
In addition, as a covering member excellent in airtightness here, a synthetic resin film, a nonwoven fabric, etc. are applicable, for example.
At this time, the length of the covering member in the width direction is more than twice the width of the fastener in a state where both fasteners are connected. Even when a breathable fabric is used, the effect of effectively blocking the gaps of all the fastener portions is exhibited, and yellowing is suppressed. Moreover, a clearance gap can be made harder to produce by making a covering member into a piece member.

In addition, if such a covering member is provided on the bag inside side of the fastener portion provided in the bag body, the free end side of the covering member can be stored inside the lid body, and the free end side is There is no problem that the blocking effect is diminished by turning over. Further, the manufacturing operation of the storage bag, the storage operation of the mattress, and the like can be easily performed, and the operation of finally setting the fastener portion to be covered with the covering member is easily performed.

As a storage bag for storing a mattress made of flexible polyurethane foam, a bag body made of a substantially rectangular parallelepiped airtight material having an opening on one side, and a lid made of a substantially rectangular parallelepiped airtight material closing the opening A fastener member having a predetermined width and a predetermined length and having excellent airtightness is provided along the fastener portion on the bag inner side of the fastener portion provided on the bag body. When the mattress is stored in the storage bag, the covering member can block the gap between the fastener portions, and the reaction between NOx in the atmosphere and the stabilizer in the foam can be effectively suppressed. Yellowing can be prevented from occurring.
At this time, by providing the covering member on the bag inner side of the fastener portion provided in the bag main body, the free end side of the covering member can be stored inside the lid, and the free end side can be turned over. As a result, there is no problem that the blocking effect is diminished, and it becomes possible to easily perform the manufacturing operation of the storage bag, the storage operation of the mattress, etc., and the operation of setting the covering member in a state of covering the fastener portion can be easily performed. it can.

It is explanatory drawing of the state which closed the fastener part of the storage bag which concerns on this invention. It is explanatory drawing of the state which opened the fastener part of the storage bag which concerns on this invention. An example of the configuration in the case where the covering member is provided on the inner surface side of the bag body is shown, (a) is an example in which the covering member is attached to the fastener part itself, (b) is an example in which the covering member is attached in the vicinity of the fastener part, c) It is explanatory drawing of the example in which a covering member extends a bag main body. It is a reference figure which shows an example in the case of providing a covering member in the outer surface side of the fastener part of a bag main body. It is explanatory drawing of a fastener width. It is explanatory drawing for demonstrating an example of the preparation point of a storage bag.

  In the storage bag that can be freely opened and closed at the fastener portion for storing the mattress made of flexible polyurethane foam according to the present invention, it is possible to prevent yellowing from occurring at a location corresponding to the fastener portion, for example, when displaying at a storefront, etc. The appearance quality is not deteriorated.

  That is, as shown in FIGS. 1 and 2, the storage bag 1 is made of a bag main body 2 made of a synthetic resin such as polypropylene or polyethylene and made of a transparent material having the same quality as that of the bag body 2. The bag body 2 has a substantially rectangular parallelepiped shape, and one end side is configured as an opening 2h (FIG. 2), and the bag body 2 is continuous over three sides of the four sides around the opening 2h. In addition, a first fastener portion 4a is provided, and the lid body 3 is also configured as a substantially rectangular parallelepiped having a slightly smaller external shape, and one end side is configured as an opening portion 3h (FIG. 2). The shape of the opening 3h of the body 3 is the same. And the 2nd fastener part 4b which can be freely engaged / disengaged with the said 1st fastener part 4a over three sides among the surrounding four sides of the opening part of the cover body 3 is provided continuously, 1st, 2nd fastener part 4a, The remaining one side of the opening of the bag body 2 and the lid 3 where the 4b is not provided is connected in an airtight manner.

  For this reason, when the first and second fastener portions 4a and 4b are connected, as shown in FIG. 1, the opening portions 2h and 3h of the bag body 2 and the lid 3 are closed, and the first and second fastener portions 4a, When the connection of 4b is released, openings 2h and 3h are opened as shown in FIG. 2 so that the mattress can be taken in and out of the bag body 2.

  As described above, the embodiment has been described in which the so-called linear fastener formed by connecting the first fastener portion 4a and the second fastener portion 4b to the fastener portion is used. Any material can be used as long as the lid 2 and the lid 3 can be freely opened and closed. In order to make it difficult for a gap to occur in the fastener portion, a wire fastener is preferable.

  In addition, a handle 5 for facilitating carrying is provided on one side surface of the bag body 2.

  In the present invention, in such a storage bag, in order to prevent NOx in the atmosphere from entering from the fastener portion 4, a transparent covering member 6 made of an airtight material is provided at or near the fastener portion 4. The part 4 is almost completely covered.

  In order to enhance the blocking effect, the length of the covering member 6 is made substantially the same as the length of the fastener part 4, and the width of the covering member 6 is connected to the first and second fastener parts 4a, 4b. This is a single piece that is not less than twice the fastener width (c in FIG. 5) in the state, is fixed in a tongue shape along the fastener portion 4, and is continuous over the entire length of the fastener portion. Note that the tongue-shaped fixing means that one end portion in the width direction of the covering member 6 is fixed to the fastener portion 4 or the vicinity thereof, and the other end portion (hereinafter referred to as a free end portion) is not fixed. It means that it is provided.

The covering member 6 may be secured together with the fastener portion 4 as shown in FIG. 3 (a) by sewing or the like, and a bag near the fastener portion 4 as shown in FIG. 3 (b). You may adhere to the main body 2 or the lid 3 by welding or the like.
Furthermore, although the covering member 6 is made into one piece, as shown in FIG.3 (c), the aspect which makes the covering member 6 consist of the part extended from the bag main body shall also be included. . If it does so, the process of providing an additional covering member can be omitted, and the manufacturing process can be simplified, which is preferable.

The covering member 6 is attached to the inner side of the fastener portion 4 as shown in FIG. For reference, an example of attaching the fastener portion 4 to the outside of the bag is shown in FIG . And when attaching to the bag inner side, since the free end portion side of the covering member 6 enters the inside of the bag, if the mattress is stored, the mattress serves as a presser and the position on the free end portion side is easily regulated. There are advantages .

  When the lid 3 of the storage bag 1 is not a substantially rectangular parallelepiped shape but is simply a flat shape, the fastener portion 4 is inevitably formed at or near the peripheral edge of the opening surface on the one end side of the substantially rectangular parallelepiped storage bag 1. However, in this case, even if the fastener portion is covered with one piece of covering member 6, wrinkles are generated at the corners or the like, and overlapping portions are generated, so that a gap is easily generated. On the other hand, in this case, if three independent tongues etc. are provided on the three sides of the peripheral edge of the opening end so as to cover the fastener part of each side, wrinkles etc. will not occur. It becomes easy to produce a gap between them. Therefore, in the present invention, the shape of the lid 3 is a substantially rectangular parallelepiped, so that all the fastener portions 4 can be reliably covered with the single covering member 6.

  Thus, the storage bag of the present invention can prevent NOx and the like from entering the storage bag from the fastener portion. And depending on the environment of the storage location, even if there is a risk of condensation on the surface of the storage bag, or contact with water such as getting wet during transportation, the fastener part of the storage bag of the present invention is surely secured by the covering member. Since it is covered, water droplets can be prevented from entering from the fastener portion.

The storage bag of the present invention is for a mattress made of flexible polyurethane foam.
The flexible polyurethane foam is generally formed by mixing and foaming a foam raw material such as polyol, polyisocyanate, foaming agent, catalyst and the like. Furthermore, the foam which is excellent in physical property stability can be obtained by adding various additives, such as a foam stabilizer, a stabilizer, a flame retardant, as needed. In particular, as the stabilizer, a phenol-based one is used, which can react with NOx in the air and cause yellowing.
Examples of such a stabilizer include dibutylhydroxytoluene (BHT), pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], thiodiethylenebis [3- (3, So-called hindered phenolic antioxidants such as 5-di-tert-butyl-4-hydroxyphenyl) proponate] are used. Such a stabilizer is an important additive in forming urethane foam, and is included in almost all urethane foams.

  Three sheets (a), (b), and (c) made of a transparent material such as polypropylene resin as shown in FIG. 6 are prepared, and the periphery of the x portion of the sheet (c) and the second fastener portion 4b are airtight The decorative and reinforcing tape 7 is wrapped and integrated with sewing, and the y portion peripheral edge of the sheet (b), the first fastener portion 4a, and the covering member 6 are wrapped and integrated with the decorative and reinforcing tape 7. .

Then, by folding the broken line portion of the sheet in (a), two surfaces (the bottom surface and the left surface in FIG. 1) of the bag body 2 and two surfaces excluding the opening of the lid body 3 (the bottom surface of the lid body 3 in FIG. 1). And the right side surface (one surface facing the opening 3h)), and the plane, front, and back of the bag body 2 by the sheet of (b) are the plane of the lid body 3 by the sheet of (c). The bag body 2 and the lid 3 as shown in FIG. 1 are integrally formed by forming a front surface and a back surface and stitching the joint portion of each sheet so as to wrap the joint portion with the decorative and reinforcing tape 7. A storage bag 1 was produced.
That is, in the case of the present embodiment, one surface (the bottom surface in FIG. 1) of the bag body 2 and the lid body 3 is composed of a single sheet (a).

  At this time, when the fastener width c (FIG. 5) in a state where the first fastener portion 4a and the second fastener portion 4b are connected is about 2.5 cm, the width of the covering member 6 is more than twice that width. The length of the covering member 6 is approximately the same as the length of the fastener part 4 connected to the three sides so that a gap through which air can flow from the connected fastener part 4 is completely formed. To be able to cover.

  When the mattress made of flexible polyurethane foam is stored in the storage bag 1, the opening of the bag body 2 faces upward, the mattress folded from the opening is stored, and then the lid 3 is covered to close the fastener portion. However, since the covering member 6 is attached to the bag main body 2 side, after the mattress is stored in the bag main body 2, all the portions of the covering member 6 are pulled upward, and the lid 3 The fastener 4 can be reliably covered with the covering member 6 simply by closing the door, and the mattress can be easily stored. Moreover, the operation | work which covers the fastener part 4 with the covering member 6 is also reliable and simple.

  And, as a result of storing a mattress made of flexible polyurethane foam in such a storage bag 1 and being tested in an environment that is easily exposed to exhaust gas, no yellowing was observed in the portion corresponding to the fastener portion. In the mattress made of flexible polyurethane foam stored in the storage bag without the covering member 6, streak-like yellowing was observed at the portion corresponding to the fastener portion. As a result, the effectiveness of the present invention was proved.

The present invention is not limited to the above embodiment. What has substantially the same configuration as the matters described in the claims of the present invention and exhibits the same operational effects belongs to the technical scope of the present invention.
For example, the first for the bag body 2 and the lid 3, a second fastener portion 4a, 4b mounting procedure or the like of the Ru exemplification.
Alternatively, the bag body 2 and the lid 3 may be configured independently, and one side of the openings 2h and 3h may be connected in an airtight manner.

  As a storage bag for storing urethane foam products, it can suppress streak-like yellowing that tends to occur at locations corresponding to fastener parts, so it is effective as a storage bag for display and storage in places where the influence of NOx is large. It is.

DESCRIPTION OF SYMBOLS 1 ... Storage bag, 2 ... Bag main body, 2h ... Opening part, 3 ... Cover body, 3h ... Opening part, 4 ... Fastener part, 4a ... 1st fastener part, 4b ... 2nd fastener part, 6 ... Cover member, c: Fastener width.

Claims (1)

A storage bag made of an airtight material for storing a mattress made of flexible polyurethane foam, the storage bag comprising a bag body made of a substantially rectangular parallelepiped airtight material having an opening on one side, and the opening. A lid made of an airtight material having a substantially rectangular parallelepiped shape that is closed is connected by a fastener portion so as to be freely opened and closed, and the inner side of the fastener portion provided in the bag body is covered with excellent airtightness. A member is provided, and the covering member is a single piece fixed in a tongue shape along the fastener portion and continuous over the entire length of the fastener portion, and the length of the covering member in the width direction is , more than twice the fastener width in the connected state of both fasteners, in the case of housing the mattress to the storage bag, flexible polyurethane Four of the fastener portion, characterized in that it is covered by the covered member Manufacturing mattress for storage bag.

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