JP2024029453A - envelope - Google Patents

Abstract

To provide an envelope in which it is hard for a content to move in a bag even with the content which is rather small contained.SOLUTION: An envelope that has a bag 10 for containing a content C, formed of a main body part 1 made of paper or material consisting principally of paper, or plastic or material consisting principally of plastic, or non-woven fabric and forming a top surface defining dimensions, and a bottom 2 and sides 3 provided connecting with the main body part 1 and also folded back, and is sealed by folding back a flap 4 extending from the main body part 1 is provided, in the region between an entrance of the bag 10 and a folding line (folding-back line) 4L of the flap 4, with a press part 9 which presses the content C toward the folded-back flap 4, and is made of paper or material consisting principally of paper, or plastic or material consisting principally of plastic, or non-woven fabric.SELECTED DRAWING: Figure 6

Description

The present invention relates to an envelope, and particularly to an envelope in which a bag is formed by a main body, a bottom, and sides forming the front surface, and a flap extending from the main body is folded back to seal the bag.

Envelopes are used not only for mailing purposes, but also for containing relatively thin contents such as documents. There are various types of envelopes, and one suitable for accommodating thin contents includes, for example, the one described in Patent Document 1 below. Among these envelopes, for example, a Western-style envelope with kamasu paste as shown in FIG. 3 of Patent Document 1 is used as an envelope that stylishly accommodates horizontally long and thin contents such as a member's card. In this type of Western envelope, the sides that extend on both sides of the main body, which constitute the horizontally long rectangular surface that defines the dimensions of the envelope, are folded back, and the bottom that extends below the main body is also folded back. , These sides and bottom are pasted together to form a bag (made of Kamasu pasted). After the contents are stored in this bag, the flap extending above the main body is folded back and sealed, and the bag is used, for example, as a product. Of course, other forms of envelopes are also used, but generally the contents are long and thin and are housed in a bag consisting of a main body, sides, and bottom. Note that the extending direction of the sides, bottom, or flaps only corresponds to the most common usage conditions, and needless to say, if the orientation of the envelope changes, the extending direction will also change.

Japanese Patent Application Publication No. 2004-210391

Incidentally, due to the design and marketability of the envelope containing the contents, an envelope larger than the size of the contents is sometimes used. If you store contents smaller than the size of the envelope in this way, the contents may move inside the envelope bag, and this movement may cause noise or shock (vibration). This may result in a decline in marketability.
The present invention has been made in view of the above problems, and an object thereof is to provide an envelope in which the contents are difficult to move inside the bag even when small contents are accommodated therein.

In order to achieve the above object, an envelope according to one aspect of the present invention is provided with a main body that is made of paper or a paper-based material, plastic or a plastic-based material, or a nonwoven fabric, and that forms a surface that defines dimensions. and a bottom and sides that are serially provided on the main body and are folded back to form a bag for accommodating contents, and a flap that extends on the main body is folded back to seal the envelope, wherein the bag is sealed. A paper or paper-based material or plastic or plastic-based material that presses the contents toward the folded flap side in the area between the entrance of the flap and the fold line of the flap. The gist is that a pressing part made of synthetic or non-woven fabric is provided.

According to the envelope of the present invention, the contents inserted into the bag composed of a main body, a bottom, and sides are pressed toward the main body by the bag inside the bag, and folded back by the pressing part outside the bag. This presses the flap side opposite to the main body, and as a result, opposite pressing forces act on the contents inside and outside the bag in the thickness direction, and as a result, this opposite pressing force Movement of the contents is suppressed by being sandwiched in the thickness direction.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a paper material in an expanded state showing an embodiment of an envelope of the present invention. FIG. 2 is a perspective view of the paper material of FIG. 1; FIG. 2 is an explanatory diagram of making the paper material of FIG. 1 into an envelope. FIG. 2 is an explanatory diagram of making the paper material of FIG. 1 into an envelope. FIG. 2 is an explanatory diagram of accommodating contents in the envelope made of paper material of FIG. 1; FIG. 6 is an explanatory diagram of putting a lid on the envelope of FIG. 5; FIG. 6 is an explanatory diagram of putting a lid on the envelope of FIG. 5; FIG. 6 is an explanatory diagram of putting a lid on the envelope of FIG. 5; Figure 6 is a cross-sectional view of the sealed envelope of Figure 5; FIG. 4 is a perspective view showing a modification of the pressing section of FIG. 3; FIG. 4 is a perspective view showing another modification of the pressing portion of FIG. 3; 4. It is a perspective view which shows the further modification of the press part of FIG. FIG. 5 is a perspective view showing a modification of the kamasu pasting shown in FIG. 4; 5 is a perspective view showing a modification of the bag configuration of FIG. 4. FIG. FIG. 7 is a front view of a paper material in a developed state showing another embodiment of the envelope of the present invention.

Embodiments of the envelope of the present invention will be described in detail below with reference to the drawings. The embodiments shown below illustrate devices and methods for embodying the technical idea of the present invention. It is not limited to the embodiments described below. Furthermore, the drawings are schematic. Therefore, it should be noted that the relationships, ratios, etc. between thickness and planar dimensions are different from those in reality, and the drawings also include portions where the relationships and ratios of dimensions are different.
FIG. 1 is a front view of an embodiment of an envelope in a unfolded state of paper material. The solid lines in FIG. 1 indicate the outline of the paper material or the incisions made by full cutting, which will be described later. Moreover, the dashed-dotted line in FIG. 1 indicates a so-called valley fold line (folding line, folding line). The valley fold line in this embodiment is composed of a so-called "ruled line" that is formed by pressing the paper material linearly from the back side in the thickness direction to create a depression. Although the material of the envelope in this embodiment is made of paper, it may be made of a material mainly made of paper. The envelope of this embodiment is a Western envelope with a horizontally long surface and an inner cover. First, in the case of a normal Western envelope, for example, a bottom 2 and sides 3 for forming a bag 10 as a container (see FIG. 5) and a flap 4 for forming a lid for the bag 10 are extended. The surface of the main body 1 opposite to the bag 10 constitutes the surface that defines the dimensions of the envelope. In this embodiment, the bag 10 is constructed by folding the bottom 2 and the sides 3 along the valley fold line toward the front of the paper in the figure. Therefore, what is visible in FIG. 1 is the back side), and the front side of the main body 1 will be referred to as the front side, and the opposite side will be referred to as the back side. That is, FIG. 1 is a view of the paper material of this embodiment viewed from the back side (for convenience, it is referred to as a front view). However, in this embodiment, as will be described in detail later, when the product contains the contents C and the lid is completely closed (sealed), the outer surface of the flap 4 can become the front surface of the product. . Further, as described above, the most common usage state of an envelope, here, the directions (vertical direction, horizontal direction) in the state shown in FIG. 1, will be used for explanation. Regarding the left and right direction, both sides are also referred to as width. The vertical direction is also referred to as height.

The paper material of the envelope of this embodiment has a bottom 2 extending at the bottom in the drawing of a horizontally long rectangular main body 1, and sides 3 extending at the bottom on both sides, which are folded back and pasted together. A bag 10 is constructed by combining them. Since the envelope of this embodiment is a Western envelope with an inner frame pasted, the extension (protrusion) dimension (also the folding dimension) of the side 3 is less than half the width dimension of the main body portion 1. In addition, in this embodiment, the extension (projection) dimension (also the folding dimension) of the bottom 2 is such that when the bottom 2 is folded back, the upper end of the bottom 2 matches the upper end of the side 3 that is folded back. The dimensions are set. Further, a flap 4 extends above the main body 1 in the drawing, and the bag 10 is covered by folding the flap 4 back. Normally, the folded back side of the flap 4 is attached or engaged with the bottom 2 or side 3 of the bag 10 to form a seal, but as can be inferred from the figure, this embodiment Then, the front side folded part 5, which is the tip of the flap 4, is folded back to the front side of the main body part 1, and the front side folded part 5 is engaged with the main body part 1 to form a seal. Specifically, the tongue-shaped insertion part 6 protruding from the tip of the front folded part 5 of the flap 4 is inserted into the insertion opening 7 made of a linear full cut provided in the main body part 1, and the flap is removed. 4 to the main body part 1. That is, in this embodiment, the flap 4 has a length that allows it to be folded back once to the back side and then folded back from the folded portion side of the bottom 2 to the front side of the main body portion 1. Note that "full cut" means a cut made by penetrating the paper from the front side to the back side with a knife. In the insertion port 7 of this embodiment, diagonally downward straight portions 7b are connected to both sides of a downwardly convex arcuate curved portion 7a. An auxiliary cut 7c for making the insertion port 7 easier to open is connected downward from the center of the arc curved portion 7a.

In this embodiment, rectangular extensions 8 are extended on both sides of the main body 1, and as described later, these extensions 8 are folded back and the folded portions are attached to the main body 1. The pressing part 9 is configured by pasting it on the back surface of the. As clearly shown in the figure, in the unfolded state of the paper material, the extending portion 8 and the side 3 are in vertical contact with each other. Therefore, the pressing part 9 of this embodiment is provided immediately above the bag 10, which is composed of the main body part 1, the bottom 2, and the sides 3. In other words, this pressing portion 9 is provided between the entrance of the bag 10 and the folding line of the flap 4. Further, in this embodiment, the extension (projection) dimension (also the folded dimension) of the extension portion 8 is set to half the width dimension of the main body portion 1 . Therefore, when the extending portion 8 is folded back and attached to the back surface of the main body portion 1, the tips of the pressing portions 9 (extending portions 8) are brought into contact with each other. That is, when the bottom 2 and the sides 3 are folded back to form the bag 10, and the extension part 8 is further folded back to form the pressing part 9, the back surface of the main body part 1 cannot be seen from the back side.

Hereinafter, a procedure for making envelopes from the paper material shown in FIG. 1 will be explained. Note that the pasting locations and pasting locations in the description are merely examples. FIG. 2 is a perspective view of the paper material of FIG. 1 before being made into an envelope, viewed from the back side (ie, in the same direction as FIG. 1). From this state, as shown in FIG. 3, the extension parts 8 extending on both sides of the main body part 1 are folded back to the back side along the valley fold line 8L, and the tip of the folded part is attached to the back surface of the main body part 1. paste. In the figure, the cross circled with a broken line indicates the attachment location on the back side of the extension portion 8. As a result, as shown in FIG. 4, the extending portion 8 is attached to the back surface of the main body portion 1, thereby forming a pressing portion 9. Since the folded tips of the left and right pressing portions 9 are brought into close contact with each other, the back surface of the main body portion 1 is covered by the pressing portions 9. Next, as shown in FIG. 4, first fold the two sides 3 to the back side along the valley fold line 3L, then fold back the bottom 2 to the back side along the valley fold line 2L, and then fold the sides 3 and bottom 2 together at the part where they overlap. Paste them together. The x shown in the figure indicates the bonding location. As a result, as shown in FIG. 5, the bag 10 containing the contents C is formed by pasting the inner bag. Since the upper end position of the bag 10 coincides with the lower end position of the pressing part 9, the back surface of the main body part 1 is covered by the pressing part 9 and the bag 10, that is, the bottom 2, and the back surface of the main body part 1 is not visible from the back side. Note that in this example, the steps in FIGS. 3 and 4 may be reversed.

Next, as also shown in FIG. 5, the contents C are accommodated in the bag 10 configured as shown in FIG. In this embodiment, a horizontally long and thin content C such as a member's card is assumed. However, as described above, the dimensions of the bag 10, that is, the envelope, are so large that a large gap is formed relative to the contents C. After the contents C are stored in the bag 10, as shown in FIG. When the flap 4 approaches, as shown in FIG. 7, the tip portion of the flap 4, that is, the front folded portion 5 is folded back to the front side along the valley fold line 5L. When the front folded portion 5 of the flap 4 approaches the main body 1, as shown in FIG. 8, the insertion portion 6 at the tip of the front folded portion 5 is folded along the valley fold line 6L (see FIG. 2). FIG. 8 is a perspective view of the envelope in this state, viewed from the front side. Since this valley fold line 6L is curved, the insertion portion 6 bent along this valley fold line 6L is curved so that the center portion approaches the surface of the main body portion 1, as shown in FIG. As shown in FIG. 8, the curved form of the insertion portion 6 matches the curved direction of the arcuate curved portion 7a of the insertion port 7. Easy to insert. Further, by curving the insertion portion 6, the strength increases and becomes difficult to bend, and this also makes it easier to insert the curved insertion portion 6 into the insertion port 7. When the insertion part 6 is inserted into the insertion opening 7, the insertion part 6 is fully pushed into the back side of the main body part 1.

FIG. 9 is a sectional view of the envelope in a product state in which the contents C are accommodated, the insertion part 6 is inserted into the back side of the main body part 1 through the insertion opening 7, and the flap 4 is engaged with the main body part 1. Note that hatching is omitted to avoid complexity and make it easier to see. The right side of the figure corresponds to the front side, and the left side corresponds to the back side. Paper is a deformable material that also has flexibility and elasticity, so the paper material folded as described above can be flexibly deformed depending on the thickness of the materials and the shape (mainly thickness) of the contents C. However, such changes are ignored. Inside the bag 10, the contents C are pressed toward the main body 1, that is, the front side, by the sides 3 and bottom 2 that constitute the bag 10. That is, a pressing force toward the front side is acting on the lower part of the content C, and this pressing force can be increased by the flap 4. On the other hand, outside the bag 10, the contents C are pressed by the pressing part 9 to the side opposite to the main body part 1 (the folded flap 4 side), that is, to the back side. That is, a pressing force toward the back side is acting on the upper part of the content C. Therefore, opposing pressing forces are applied to the contents C with the upper edge of the bag 10 as a boundary, and the contents C are held in the envelope by these two opposite pressing forces. This suppresses the movement of the contents C within the envelope, which are smaller than the size of the envelope. In addition, inside the bag 10, the contents C are supported from the front side by an insertion part 6 inserted into the back side of the main body part 1, and the movement of the contents C can also be suppressed by appropriately setting this support position. can do. Furthermore, if the insertion port 7 is too close to the folded portion of the bottom 2, it will be difficult to insert the insertion portion 6, and if the insertion port 7 is too close to the pressing portion 9, it will be difficult to insert the insertion portion 6. Taking these into consideration, the position of the insertion port 7 is set.

FIG. 10 is a perspective view showing a modification of the pressing section 9 shown in FIG. 3. FIG. In FIG. 3, the folded tips of the two pressing parts 9 are set to abut at the center of the width of the back surface of the main body 1, but this abutting position is arbitrary. For example, as shown in FIG. It is also possible to set the contact position to the right. Further, for example, it is also possible to fold back the extending portion 8 extending only on one side of the main body portion 1 to form a pressing portion 9 that covers the entire width of the back surface of the main body portion 1. Further, in this embodiment, the pressing portion 9 is formed over the entire width of the back surface of the main body portion 1 in order to prevent the back surface of the main body portion 1 from being seen when the flap 4 is open. If there is no pressing part 9, the pressing part 9 may be formed only on a part of the width of the back surface of the main body part 1. Similarly, the pressing portion 9 may be formed only at a part of the height of the back surface of the main body portion 1 outside the bag 10. FIG. 11 is a perspective view showing another modification of the pressing section 9 of FIG. 3. FIG. In the above embodiment, the pressing part 9 is configured by pasting the extending part 8 folded back on the back side of the main body part 1, but as can be inferred from the explanation of the effect of pressing force, this pressing part 9 is It is sufficient that it does not move easily after the content C is contained. In FIG. 11, the extension length (folded length) of the two extension parts 8 is set to the length where the folded tips overlap with each other, and the two extension parts 8 are completely cut in half from the top or bottom at the same width position of the overlap part. A notch 12 is made, and the two extending portions 8 are engaged with each other in the shape of a woodworking interlocking joint, thereby forming the pressing portion 9. Other forms of engagement between the extension portions 8 are also applicable.

FIG. 12 is a perspective view showing a further modification of the pressing section 9 of FIG. 3. FIG. In this example, at a height position corresponding to the upper edge of the contents C accommodated in the bag 10, a whole extending in the width direction is placed at the center of each extending portion 8 constituting the pressing portion 9. An incision 11 consisting of a cut is provided. In the example shown in FIG. 3, only the folded end portions of each extending portion 8 constituting the pressing portion 9 are attached to the back surface of the main body portion 1, and the remaining portions are floating from the back surface of the main body portion 1. As mentioned above, paper has deformability that combines flexibility and elasticity, so when the contents C are pressed toward the front side by the sides 3 and bottom 2 of the bag 10, the contents C will cause the extension portion 8 to The portion of the pressing portion 9 below the cut 11 is also pushed toward the front side, and the portion of the extension portion 8 above the cut 11 is relatively slightly raised from the back surface of the main body portion 1 . The upper edge of the cut 11 formed by the raised extension portion 8 covers the upper edge of the contents C, thereby restricting the upward movement of the contents C. Moreover, since this regulating force holds down the contents C downward, the movement of the contents C inside the envelope can also be suppressed by this force.

FIG. 13 is a perspective view showing a modification of the kamasu paste shown in FIG. 4. In this example, the bottom 2 is first folded to the back side along the valley fold line 2L, then the two sides 3 are folded back to the back side along the valley fold line 3L, and the sides 3 and the bottom 2 are pasted together at the portion where they overlap. As a result, the bag 10 containing the contents C is formed by pasting the outside. This example differs only in the form of Kamasu pasting, and its operation is almost the same as the Kamasu pasting shown in FIG.
FIG. 14 shows a modification of the configuration of the bag 10 in FIG. 4. In this example, sides 3 extend on both sides of the bottom 2, and after folding the bottom 2 to the back side, both sides 3 are folded back to the front side of the main body 1, and the folded portions of the sides 3 are attached to the main body. The bag 10 is constructed by attaching the bag 10 to the surface of the bag 1. The side 3 generally refers to the part that extends from the side of the main body part 1 and is folded back to the back side, but in this case, the part that extends to the side of the bottom 2 and is folded back to the front side is also referred to as side 3. stipulate. Similarly to the above-mentioned example, the pressing part 9 of this example is made by folding back the extended part 8 extending to the side of the main body part 1 and pasting it on the back surface of the main part 1 (or 8 are engaged with each other). In this example, since the vertical dimension of the extending portion 8 constituting the pressing portion 9 is not restricted by the size of the side 3 (upper end position), the pressing portion 9 can be extended into the bag 10. In this case, the extending portion 8 is first folded back to the back side to form the pressing portion 9, then the bottom 2 is folded back to the back side, and the side 3 is further folded back to the front side of the main body portion 1. For example, if the pressing part 9 extends into the bag 10 and the left and right pressing parts 9 are in contact with each other without a gap, in other words, this is the same as when the main body part 1 is thick, and the bag 10 is A force that presses the contents C to the side opposite to the main body part 1 (back side) does not act outside the body part 10. On the other hand, in the part of the bag 10 where the content C does not come into contact with the pressing part 9 and is sandwiched between the bottom 2 and the main body part 1, the content C is pressed toward the main body part 1 side (front side). Force acts. Although the movement of the contents C can be suppressed by the force that presses the contents C toward the front side, the force that presses the contents C toward the back side cannot be actively obtained, so the movement of the contents C The effect of regulating is rather small. On the other hand, if the pressing part 9 is provided only on the outside of the bag 10, as in the above example, the force that presses the contents C toward the front side inside the bag 10 and the force that presses the contents C outside the bag 10 The movement of the contents C can be effectively regulated by the force of pressing C to the back side.

FIG. 15 is a front view of another embodiment of the envelope, showing the unfolded state of the paper material. The envelope of this embodiment is similar to the envelope of the embodiment of FIG. 1, and the same components are given the same reference numerals, and detailed description thereof will be omitted. The configuration and operation of the extending portion 8 (pressing portion 9), flap 4, insertion portion 6, and insertion opening 7 in this embodiment are the same as those in FIG. In this embodiment, the extension (projection) dimension of the side 3 is larger than that of FIG. 1, and the extension (projection) dimension of the bottom 2 is smaller than that of FIG. The folded (protruding) dimensions of the two sides 3 are slightly larger than half the width dimension of the main body portion 1. Therefore, in this embodiment, when the two sides 3 are folded back to the back side as shown in FIG. , Attach the folded bottom 2 to the back side. As a result, in this embodiment, the bag 10 is mainly composed of the side 3 and the main body 1, like a Japanese envelope. Since the pressing part 9 formed by folding back the extending part 8 is located outside the bag 10, the effect of suppressing the movement of the contents C is the same as that shown in FIG.

In this way, in the envelope of this embodiment, the contents C inserted into the bag 10 composed of the main body 1, the bottom 2, and the sides 3 are pressed to the front side by the bag 10, The outside of the bag 10 is pressed against the back side by the pressing part 9, and as a result, opposite pressing forces act on the contents C in the thickness direction inside and outside the bag 10, and as a result, this opposite pressing force The movement of the contents C is suppressed by sandwiching them in the thickness direction.
In addition, by folding back the extending portion 8 that extends laterally from the main body portion 1 in the unfolded state to form the pressing portion 9, it is possible to form an envelope by simply folding or joining (engaging). This makes envelope manufacturing easier and automation possible.

Further, by making the length of the flap 4 such that it can be folded back from the folded portion side of the bottom 2 to the front side of the main body portion 1, the outer surface (surface) of the flap 4 can be used as the front side of the product. Since the surface of this flap 4 is a series of flat surfaces, the merchantability alone can be improved, and further, the merchantability can be further improved by printing or decorating the surface of the flap 4.
In addition, by inserting the insertion part 6 protruding from the folded front end of the flap 4 into the linear insertion opening 7 provided in the main body 1, the flap 4 is engaged with the main body 1. Without using separate engaging/locking members, the appearance is neat and calm, and the marketability is improved.

Further, by providing a curved bending line at the protruding base end of the insertion part 6, the insertion part 6 bent at this bending line is curved, the strength of the insertion part 6 is increased, and the linear shape of the main body part 1 is Easy to insert into outlet 7.
In addition, by making the bag 10 that accommodates the contents C stylishly accommodate the horizontally long rectangular contents C by making the side 3 and the bottom 2 folded back from the main body 1 to be glued together.
Although the envelope according to the embodiment has been described above, the present invention is not limited to the configuration described in the above embodiment, and various changes can be made within the scope of the gist of the present invention. For example, in the above embodiment, the extension part 8 extending from the main body part 1 is folded back to form the pressing part 9. However, the pressing part 9 is made of paper that is different from the paper material constituting the envelope. Alternatively, a member made of a material mainly made of paper may be attached to the main body part 1.

Further, in the above embodiment, only a Western envelope having a horizontally long rectangular surface has been described, but the envelope of the present invention can be similarly applied to a Japanese envelope. Similarly, windows or decorations may be provided, or printing or functional structures may be added.
Further, in the above embodiment, only a thin and flat content C such as a member's card was described in detail, but any content C that can be accommodated in the bag 10 can be used in the envelope of the present invention. It can be applied as content C of. As an example, it is also possible to use an application method in which thin packaging materials in which foodstuffs, cosmetics, etc. are sealed are arranged side by side and accommodated in the bag 10.
Further, in the above embodiment, only the envelope made of paper or a material mainly made of paper is described in detail, but the envelope of the present invention may be made of plastic or a material mainly made of plastic. In that case, it is preferable that the pressing part 9 is also made of plastic or a material mainly composed of plastic. Moreover, it is also possible to make the envelope and the pressing part 9 made of nonwoven fabric. The fibers constituting the nonwoven fabric include natural fibers such as cotton and linen, and synthetic fiber materials such as PET.

1 Main body part 2 Bottom 3 Side 4 Flap 5 Front folded part 6 Insertion part 7 Insertion opening 8 Extension part 9 Pressing part 10 Bag C Contents

Claims (6)

A main body part that is made of paper or a paper-based material, a plastic or plastic-based material, or a non-woven fabric, and that constitutes a surface that defines dimensions, and a bottom and sides that are continuously provided on the main body part and are folded back. In an envelope in which a bag for accommodating contents is constructed, and a flap extending from the main body is folded back to seal the bag,
In the area between the entrance of the bag and the folding line of the flap, a material made of paper or mainly made of paper, or made of a material mainly made of paper, or made of a material mainly made of plastic, which presses the contents toward the folded flap side. An envelope provided with a pressing part made of a material or non-woven fabric. The envelope according to claim 1, wherein the pressing portion is configured by folding back an extending portion that extends laterally from the main body portion in the unfolded state. The envelope according to claim 1, wherein the flap has a length that is folded back from the folded part side of the bottom to the front side of the main body part. 4. The envelope according to claim 3, wherein the main body part is provided with a linear insertion opening into which an insertion part protruding from the folded front end of the flap is inserted. 5. The envelope according to claim 4, wherein a curved folding line is provided at a protruding base end of the insertion portion. 2. The envelope according to claim 1, wherein the bag is constructed by pasting the bottom with a side that extends laterally from the main body in an unfolded state and is folded back.

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