Mattress and mattress packaging method

Abstract

The invention relates to the technical field of articles of daily use, in particular to a mattress and a mattress packaging method. The mattress comprises a main body and an outer cover body wrapping the main body, the main body can be folded and wound, cloth of the outer cover body corresponding to at least one large surface of the main body is elastic cloth, and the elastic cloth is configured to keep elasticity after the mattress is folded and wound so that the folded and wound mattress can be flattened after being unfolded, at least part of the elastic cloth is located on the outer side of the mattress in the winding state. When the mattress needs to be packaged, the mattress is folded and wound, after the mattress is folded and wound, the part, located on the outer side of the mattress, of the outer sleeve body is subjected to large tensile force, and due to the fact that the fabric, corresponding to at least one large surface of the main body, of the outer sleeve body is elastic fabric, after the mattress is folded and wound, the tensile force is large. At least part of the elastic cloth is located on the outer side of the mattress in the winding state, the elastic cloth can keep elasticity, the mattress can be flattened after being unfolded, and therefore the loosening and wrinkling phenomena are relieved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of daily necessities, and in particular to a mattress and a method for packaging a mattress. Background Art

[0002] Mattresses are an indispensable daily necessity in people's daily lives. Existing mattresses include a main body and an outer shell that wraps the main body. The main body is usually a sponge mattress or a spring mattress, and the outer shell, which serves as the base fabric, is usually a sewn non-woven fabric. Since the mattress is large in size, in order to facilitate transportation, the mattress is usually compressed and then folded, and then rolled up. This packaging method can further reduce the packaging volume of the product and facilitate transportation.

[0003] However, after being folded and rolled, the portion of the outer shell located outside the mattress is subjected to a relatively large tensile force. After the mattress is opened, this portion is prone to sag and wrinkle, thus affecting the aesthetic appearance of the mattress. Summary of the invention

[0004] The purpose of the present disclosure is to provide a mattress and a mattress packaging method to alleviate the technical problem in the prior art that after the mattress is folded and rolled, the portion of the outer shell located outside the mattress is subjected to a large tensile force, and after the mattress is opened, this portion is prone to loosening and wrinkling.

[0005] Based on the above purpose, the present disclosure provides a mattress, comprising a main body and an outer shell wrapping the main body, the main body being capable of being folded and rolled, the fabric of the outer shell corresponding to at least one large surface of the main body being an elastic fabric, the elastic fabric being configured to maintain elasticity after the mattress is folded and rolled, so that the folded and rolled mattress can be flattened after being unfolded, wherein at least a portion of the elastic fabric is located on the outside of the mattress in a rolled state.

[0006] In one embodiment of the present disclosure, the elastic fabric has a warp direction and a weft direction, and the elongation at break of the elastic fabric in the weft direction is not less than 70%, and / or the elongation at break of the elastic fabric in the warp direction is not less than 70%.

[0007] In one embodiment of the present disclosure, the elongation at break of the elastic fabric in the weft direction is greater than 100%, and / or the elongation at break of the elastic fabric in the warp direction is greater than 100%.

[0008] In one embodiment of the present disclosure, the elastic fabric is a knitted fabric.

[0009] In one embodiment of the present disclosure, the knitted fabric is a weft knitted fabric, and the weft direction of the weft knitted fabric is substantially perpendicular to the extension direction of the crease formed after the mattress is folded.

[0010] In one embodiment of the present disclosure, the elastic fabric has a gram weight of 150 to 220 g / m 2 .

[0011] In one embodiment of the present disclosure, the fabric of the outer shell corresponding to the large surface of the main body facing the bed frame is elastic fabric.

[0012] In one embodiment of the present disclosure, the elastic fabric is a single-sided fabric, and / or the elastic fabric comprises spandex.

[0013] In one embodiment of the present disclosure, the main body is made of sponge.

[0014] Based on the above purpose, the present disclosure also provides a mattress packaging method, the mattress packaging method is applied to the mattress, and the mattress packaging method comprises the following steps:

[0015] compressing the mattress;

[0016] Folding the compressed mattress, wherein the number of foldings is at least once;

[0017] The folded mattress is rolled up to form a roll structure.

[0018] In one embodiment of the present disclosure, in the step of folding the compressed mattress, the elastic fabric is a weft knitted fabric, and the creases formed on the mattress after folding are substantially perpendicular to the weft direction of the weft knitted fabric.

[0019] In one embodiment of the present disclosure, in the step of folding the compressed mattress, the number of foldings is two times.

[0020] In one embodiment of the present disclosure, in the step of rolling the folded mattress, the mattress is rolled along an extending direction of the fold.

[0021] In one embodiment of the present disclosure, after the step of rolling the folded mattress to form a roll structure, the method further includes: wrapping the roll structure in a packaging material.

[0022] The beneficial effects of the present disclosure are mainly:

[0023] The mattress provided by the present invention can be folded and rolled when packaging is required. After folding and rolling, the portion of the outer shell located on the outside of the mattress is subjected to greater tensile force. Since the fabric of the outer shell corresponding to at least one large surface of the main body is elastic fabric, after the mattress is folded and rolled, at least a portion of the elastic fabric is located on the outside of the mattress in a rolled state. Since the elastic fabric can maintain elasticity, it can be flattened after the mattress is unfolded, thereby alleviating sagging and wrinkling phenomena and ensuring the beautiful appearance of the mattress. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A cross-sectional view of a mattress provided for an embodiment of the present disclosure;

[0026] Figure 2 A schematic diagram of a mattress folded once according to an embodiment of the present disclosure;

[0027] Figure 3 A schematic diagram of a mattress provided by an embodiment of the present disclosure after being folded once;

[0028] Figure 4 for Figure 3 A schematic diagram of the mattress after being rolled is shown;

[0029] Figure 5 A schematic diagram of a mattress folded twice according to an embodiment of the present disclosure;

[0030] Figure 6 A schematic diagram of a mattress provided by an embodiment of the present disclosure after being folded twice;

[0031] Figure 7 A schematic diagram of another state of the mattress provided by the embodiment of the present disclosure after being folded twice;

[0032] Figure 8 for Figure 6 A schematic diagram of the mattress after being rolled is shown;

[0033] Fig. 9 is an enlarged view of a weft knitted fabric in an embodiment of the present disclosure;

[0034] Fig.10 A flowchart of a method for packaging a mattress provided by an embodiment of the present disclosure;

[0035] Fig.11 is a schematic diagram of compressing the mattress according to step S102;

[0036] Fig.12 Another flow chart of the mattress packaging method provided in the embodiment of the present disclosure.

[0037] The following are the descriptions of the reference numerals:

[0038] 1- mattress; 1', 1"- roll-like structure; 1a- long side; 1b- short side; 11- main body; 111- large surface; 12- outer shell; 121- base fabric; 122- cover fabric; 123- side fabric. DETAILED DESCRIPTION

[0039] The technical solution of the present disclosure will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure.

[0040] In the description of the present disclosure, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0042] See also Figures 1 to 12As shown, this embodiment provides a mattress 1, including a main body 11 and an outer shell 12 wrapping the main body 11, the main body 11 can be folded and rolled, the fabric of the outer shell 12 corresponding to at least one large surface 111 of the main body 11 is an elastic fabric, and the elastic fabric is configured to maintain elasticity after the mattress 1 is folded and rolled, so that the folded and rolled mattress can be flattened after unfolding, wherein at least a portion of the elastic fabric is located on the outside of the mattress in the rolled state.

[0043] Based on this structure, the mattress 1 provided in this embodiment can be folded and rolled when packaging is required. After folding and rolling, the portion of the outer shell 12 located on the outside of the mattress is subjected to a large tensile force. Since the fabric of the outer shell 12 corresponding to at least one large surface 111 of the main body 11 is an elastic fabric, after the mattress is folded and rolled, at least part of the elastic fabric is located on the outside of the mattress in the rolled state. Since the elastic fabric can maintain elasticity, it can be flattened after the mattress is unfolded, thereby alleviating the sagging and wrinkling phenomena and ensuring the beautiful appearance of the mattress.

[0044] It should be noted that the main body 11 generally has two large surfaces 111 facing each other. When in use, one of the large surfaces 111 is used to contact the bed frame, and the other large surface 111 is used to contact the human body. The following takes the fabric of the outer shell 12 corresponding to the large surface 111 in contact with the bed frame as an elastic fabric as an example to describe the technical solution of this embodiment in detail.

[0045] It should be understood that when folding, a part of the mattress 1 is usually folded 180 degrees and stacked on another part, so the outer shell is subjected to the greatest force on the side opposite to the fold. Since the outer shell 12 corresponding to the large surface 111 in contact with the bed frame is made of elastic fabric, when folding, the elastic fabric is placed at the bottom and then a part of the mattress is folded upwards, for example, see Figure 2 and Figure 3 As shown, the mattress is folded in half so that the length of the mattress is halved, so the elastic fabric corresponds to the fold (in Figure 2 The dotted line in the figure indicates that the position subjected to the greatest tensile force; the folded mattress 1 is rolled up to form a roll structure 1', see Figure 4 As shown, the outer side of the roll structure 1' is elastic fabric, and at this time, the elastic fabric is further stretched. Since the elastic fabric can maintain its elasticity, after the mattress 1 is unfolded, the elastic fabric can restore its original length, so that it can be flattened together with the mattress body, alleviating the sagging and wrinkling phenomenon, and ensuring the appearance of the mattress 1.

[0046] Of course, the mattress 1 can also be folded twice, for example, see Figure 5As shown, the right third of the mattress 1 is folded toward the middle, and then the left third of the mattress 1 is folded toward the middle. The folded state is shown in FIG. Figure 6 The folded mattress 1 is rolled up, and the rolled structure 1 formed after the rolling up is shown in FIG. Figure 8 shown.

[0047] In one embodiment, the elastic fabric is a knitted fabric. Knitted fabric is a fabric formed by bending yarn into loops using knitting needles and interlacing the yarns.

[0048] For example, the elastic fabric is single-sided fabric, which is lighter in weight, has lower production cost, and relatively lower transportation cost.

[0049] In some embodiments, the elastic fabric may include spandex. The elastic fabric with spandex added has better elasticity, but the cost is relatively high.

[0050] Of course, the elastic fabric may also be a single-sided fabric containing spandex.

[0051] In one embodiment, the elastic fabric is a weft knitted fabric, which is usually made of low-elastic polyester yarn or special-shaped polyester yarn, nylon yarn, cotton yarn, wool yarn, etc., and is woven on various weft knitting machines using plain stitch, variable plain stitch, rib plain stitch, double rib plain stitch, jacquard stitch, terry stitch, etc. There are many varieties of weft knitted fabrics, which generally have good elasticity and extensibility, are soft, and are strong and wrinkle-resistant.

[0052] Fig. 9 For an enlarged view of a weft knitted fabric, see Fig. 9 As shown, the weft knitted fabric has a warp direction and a weft direction, wherein the arrow direction X represents the weft direction, and the arrow direction Y represents the warp direction; see Figure 5 As shown, the dotted line represents the crease, and the weft direction of the weft knitted fabric is substantially perpendicular to the extending direction of the crease formed after the mattress 1 is folded.

[0053] Taking a rectangular mattress 1 as an example, see Figure 5 As shown, the mattress 1 has a long side 1a and a short side 1b. When producing the outer shell 12, the weft direction of the weft knitted fabric can be made to correspond to the long side 1a of the mattress 1. When folding, the base fabric made of the weft knitted fabric is located at the bottom, and the extension direction of the crease formed after folding is generally perpendicular to the weft direction of the weft knitted fabric, so that the tensile force in the weft direction is relatively large. In order to ensure that the weft knitted fabric can still maintain good elasticity after the mattress is folded and rolled, the weft elongation at break of the weft knitted fabric in this embodiment is not less than 70%.

[0054] Exemplarily, the existing test method is used to test the elongation at break of six commercially available fabrics, wherein sample 0 is an existing stitch-bonded nonwoven fabric, and samples 1 to 5 are weft-knitted fabrics from different manufacturers. The test results are shown in Table 1.

[0055] Table 1 Test results of elongation at break of six kinds of fabrics

[0056]

[0057] The above six kinds of fabrics are used to make the outer shell corresponding to one of the large surfaces of the main body respectively, and the six outer shells are put on the outside of six identical main bodies to form six mattresses, which are numbered as mattress No. 0, mattress No. 1, mattress No. 2, mattress No. 3, mattress No. 4 and mattress No. 5 respectively.

[0058] Six mattresses are packaged simultaneously using the same processing method. For example, the processing method includes: compression (reducing the thickness of the mattresses to a uniform set size), folding (the folding crease is generally perpendicular to the weft direction) and rolling (rolling the mattress along the extension direction of the crease) to form six roll structures. Under the same conditions, after maintaining the set time, the six roll structures are unfolded simultaneously. The experimenter observes the degree of relaxation and wrinkles of the six unfolded mattresses. The degree of relaxation and wrinkles of mattress No. 0 corresponding to sample 0 is significantly more serious than that of the other five mattresses.

[0059] At the same time, there is no obvious difference in the degree of relaxation and wrinkles of mattresses No. 1 to No. 5 corresponding to samples 1 to 5. In other words, by using the above-mentioned processing method to package the mattresses, as long as the weft elongation at break of the weft knitted fabric is greater than 100%, the degree of relaxation and wrinkles of the unfolded mattress can be significantly reduced.

[0060] In order to further improve the looseness and wrinkles at the folding and winding positions, the elastic fabric in this embodiment is a weft knitted fabric with a weft elongation at break greater than 100%, thereby further enabling the mattress to be flattened.

[0061] In one embodiment, the elastic fabric has a grammage of 150 to 220 g / m 2 This will further reduce the possibility of wrinkles in the mattress after folding and rolling.

[0062] For example, the weight of the elastic fabric in this embodiment may be, but is not limited to, 150 g / m 2 , 155g / m 2 , 161g / m 2 , 165g / m 2 , 170g / m 2 , 175g / m 2 , 180g / m2 , 185g / m 2 , 190g / m 2 , 195g / m 2 , 200g / m 2 , 205g / m 2 , 210g / m 2 , 215g / m 2 or 220g / m 2 .

[0063] It should be noted that other types of elastic fabrics also have warp and weft directions. Depending on the folding position and winding direction of the mattress, the elastic fabric (such as weft knitted fabric) with a weft elongation at break of not less than 70% can be selected, or the elastic fabric (such as weft knitted fabric) with a warp elongation at break of not less than 70% can be selected, or the elastic fabric (such as weft knitted fabric) with a weft and warp elongation at break of not less than 70% can be selected. Of course, the elongations at break in the weft and warp directions are not necessarily the same.

[0064] In addition, for other types of elastic fabrics, whether the warp or weft direction is selected, when the elongation at break is greater than 100%, a good flattening effect can be achieved.

[0065] In one embodiment, the fabric of the outer shell 12 corresponding to the large surface 111 of the main body 11 facing the bed frame is elastic fabric, that is, the fabric at the bottom position of the mattress when it is normally placed is elastic fabric.

[0066] In some embodiments, see Figure 1 As shown, for a mattress 1 used on one side, the outer shell 12 includes a base fabric 121, a cover fabric 122 and a side fabric 123. Generally, the base fabric 121 is used to contact the bed frame, the cover fabric 122 and the side fabric 123 are connected together, for example, by sewing, and the side fabric 123 is connected to the base fabric 121 by a zipper. Exemplarily, the zipper can be a 7# nylon zipper to improve the tolerance of the zipper. The base fabric 121 is made of elastic fabric. Compared with the existing stitched non-woven fabric, the use of elastic fabric as the base fabric 121 can reduce the possibility of looseness and wrinkles at the folding position.

[0067] In other embodiments, the mattress 1 can also be used on both sides, that is, both large surfaces 111 of the mattress 1 can contact the human body, and the user can choose according to needs. In this case, the base fabric 121 and the cover fabric 122 of the outer shell 12 can both be made of elastic fabrics, so that when packaging the mattress 1, there is no need to consider the front and back sides of the mattress 1, and the mattress 1 can be directly folded and rolled, which not only improves the packaging efficiency, but also no matter which large surface 111 of the mattress 1 is located on the outside, after the mattress 1 is unfolded, there will be no obvious slack and wrinkles, thereby improving the overall aesthetics of the mattress 1.

[0068] In one embodiment, the main body 11 is made of sponge.

[0069] Exemplarily, the main body 11 includes a main layer and a functional layer. The main layer is made of fast-bounce sponge, and the functional layer is made of slow-bounce sponge. When in use, the functional layer is close to the human body.

[0070] This embodiment also provides a mattress packaging method, and the mattress packaging method is applied to the mattress provided in this embodiment, see Fig.10 As shown, the mattress packaging method provided in this embodiment includes the following steps:

[0071] Step S102, compressing the mattress 1;

[0072] Step S104, folding the compressed mattress, wherein the number of foldings is at least once;

[0073] Step S106, rolling up the folded mattress to form a roll structure.

[0074] The mattress packaging method provided in this embodiment is implemented by compressing the mattress 1 to form a sheet structure, and then folding the compressed mattress 1 at least once to initially reduce the outer dimensions of the mattress 1, and then rolling the folded mattress 1 to form a roll structure, thereby further reducing the outer dimensions of the mattress 1 for easy transportation. When the mattress 1 needs to be used, the roll structure is unfolded and the mattress 1 is decompressed so that the mattress 1 returns to its original state. Since the fabric of the outer shell 12 corresponding to at least one large surface 111 of the main body 11 of the mattress 1 is an elastic fabric, after the mattress is folded and rolled, at least part of the elastic fabric is located on the outside of the mattress in the rolled state. Since the elastic fabric can still maintain elasticity after the mattress 1 is folded and rolled, it can be flattened after the mattress 1 is unfolded, thereby alleviating the sagging and wrinkling phenomenon, and ensuring the appearance of the mattress 1.

[0075] In one embodiment, in the step of folding the compressed mattress 1, the elastic fabric is a weft knitted fabric, and the creases formed on the mattress 1 after folding are substantially perpendicular to the weft direction of the weft knitted fabric.

[0076] See also Fig. 9 As shown, weft knitted fabrics have warp and weft directions, see Figure 5 As shown, the weft direction of the weft knitted fabric is in line with the crease (in Figure 5 The dotted line in the figure indicates that the extension direction of the ??is substantially vertical.

[0077] See also Figure 5 As shown, taking a rectangular mattress as an example, the mattress 1 has a long side 1a and a short side 1b. When producing the outer shell 12, the weft direction of the weft knitted fabric can correspond to the long side 1a of the mattress 1. When folding, the weft knitted fabric is placed at the bottom. The extension direction of the crease formed after folding is generally perpendicular to the weft direction of the weft knitted fabric, so that the tensile force in the weft direction is relatively large. In order to ensure that the weft knitted fabric can still maintain good elasticity after the mattress 1 is folded and rolled, the weft elongation at break of the weft knitted fabric in this embodiment is not less than 70%.

[0078] It should be noted that the elastic fabric may also be other types of knitted fabrics.

[0079] In order to further improve the looseness and wrinkles at the folded position, the elastic fabric in this embodiment is a weft knitted fabric with a weft-direction elongation at break greater than 100%.

[0080] In one embodiment, in the step of folding the compressed mattress 1 , the number of foldings is two times.

[0081] For example, see Figure 5 As shown, the right third of the mattress 1 is folded toward the middle, and then the left third of the mattress 1 is folded toward the middle. The folded state is shown in FIG. Figure 6 When winding, the weft knitted fabric corresponding to the middle one-third portion is subjected to a larger tensile force, that is, the opposite side of the portion between the two folds is subjected to a larger tensile force.

[0082] It should be noted that the position, direction and number of folding are not limited to the above. For example, it can also be folded to form Figure 7 For another example, the short side 1b of the mattress 1 can be folded, and the fold formed after folding is substantially parallel to the long side 1a. At this time, it should be noted that when producing the outer shell 12, the weft direction of the weft knitted fabric can correspond to the short side 1b of the mattress 1, or a weft knitted fabric with a warp elongation at break of not less than 70% can be selected.

[0083] In one embodiment, in the step of rolling the folded mattress 1, the mattress 1 is rolled along the extension direction of the fold to form a roll structure 1”. Figure 8 shown.

[0084] Since the extension direction of the crease is substantially perpendicular to the weft direction of the weft knitted fabric, in the process of rolling the mattress 1 along the extension direction of the crease, the outer side of the roll structure 1" is the weft knitted fabric, and the weft direction of the weft knitted fabric will be subjected to further tensile force. Since the breaking elongation of the weft direction of the weft knitted fabric is not less than 70%, after the mattress 1 is unfolded, not only the part corresponding to the opposite side of the crease can be flattened, but also the part corresponding to the outer side of the roll structure can be flattened, thereby alleviating the sagging and wrinkling phenomenon at the same time.

[0085] It should be noted that the outer sleeve located inside the roll structure is subjected to a smaller tensile force and will gradually flatten out after being unfolded.

[0086] In one embodiment, in step S102, see Fig.11 As shown, the mattress is compressed from top to bottom using existing compression equipment, so that the mattress 1 is formed Figure 5 The sheet structure shown. Exemplary, Fig.11 The hollow arrows in the figure indicate the compression direction.

[0087] In one embodiment, see Fig.12 As shown, after the step of rolling up the folded mattress 1 to form a roll structure, the step further includes:

[0088] Step S108, wrapping the roll structure 1" in packaging materials.

[0089] Exemplarily, the packaging material is a PE film, and additives are added to the PE film to ensure the anti-slip performance of the surface of the PE film, which is more convenient during folding and winding and prevents slipping.

[0090] Exemplarily, the thickness of the PE film is 0.1 mm.

[0091] It should be noted that the packaging material is a prior art and will not be described in detail here.

[0092] It should also be noted that step S106 and step S108 may also be performed simultaneously.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A mattress, characterized in that: The mattress comprises a main body and an outer shell wrapping the main body, wherein the main body can be folded and rolled, and the fabric of the outer shell corresponding to at least one large surface of the main body is an elastic fabric, and the elastic fabric is configured to maintain elasticity after the mattress is folded and rolled, so that the folded and rolled mattress can be flattened after unfolding, wherein at least part of the elastic fabric is located on the outside of the mattress in the rolled state.

2. The mattress according to claim 1, characterized in that: The elastic fabric has a warp direction and a weft direction, the elongation at break of the elastic fabric in the weft direction is not less than 70%, and / or the elongation at break of the elastic fabric in the warp direction is not less than 70%.

3. The mattress according to claim 2, characterized in that: The elongation at break of the elastic fabric in the weft direction is greater than 100%, and / or the elongation at break of the elastic fabric in the warp direction is greater than 100%.

4. The mattress according to any one of claims 1 to 3, characterized in that: The elastic fabric is a knitted fabric.

5. The mattress according to claim 4, characterized in that: The knitted fabric is a weft knitted fabric, and the weft direction of the weft knitted fabric is substantially perpendicular to the extension direction of the crease formed after the mattress is folded.

6. The mattress according to any one of claims 1 to 3, characterized in that: The elastic fabric has a gram weight of 150 to 220 g / m 2 .

7. The mattress according to any one of claims 1 to 3, characterized in that: The fabric of the outer shell corresponding to the large surface of the main body facing the bed frame is elastic fabric.

8. The mattress according to any one of claims 1 to 3, characterized in that: The elastic fabric is a single-sided fabric, and / or the elastic fabric comprises spandex.

9. The mattress according to any one of claims 1 to 3, characterized in that: The material of the main body is sponge.

10. A method for packaging a mattress, characterized in that: The mattress packaging method is applied to the mattress according to any one of claims 1 to 9, and the mattress packaging method comprises the following steps: compressing the mattress; Folding the compressed mattress, wherein the number of foldings is at least once; The folded mattress is rolled up to form a roll structure.

11. The method for packaging a mattress according to claim 10, characterized in that: In the step of folding the compressed mattress, the elastic fabric is a weft knitted fabric, and the creases formed on the mattress after folding are substantially perpendicular to the weft direction of the weft knitted fabric.

12. The method for packaging a mattress according to claim 11, characterized in that: In the step of folding the compressed mattress, the number of foldings is two times.

13. The method for packaging a mattress according to any one of claims 10 to 12, characterized in that: In the step of rolling the folded mattress, the mattress is rolled along the extending direction of the folds.

14. The method for packaging a mattress according to any one of claims 10 to 12, characterized in that: After the step of rolling the folded mattress to form a roll structure, the method further includes: wrapping the roll structure in packaging materials.

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