JP3239417U - Filling member, filling member precursor, and filling structure - Google Patents

Abstract

A filling member, a precursor of the filling member, and a filling structure are provided, which can ensure a thickness in the vicinity of the folded portion of the sheet-like member. A filling member (1) is a filling member formed by folding a sheet-like member (2) made of a porous material. A formed first layer 4 and a second layer 6 formed on the other side with respect to the folded portion, the first layer and the second layer being superimposed on each other, the folded portion , has at least two folds 8A and 8B, the folds being formed by compressing the sheet-like member, the thickness of the sheet-like member being X, and the spacing between the folds at both ends of the fold being A , the relationship of formula (1) holds. 0.5X≦A<4X (1) [Selection drawing] Fig. 1

Description

The present invention relates to filler members, filler member precursors, and filler structures.

As a conventional filling member, one described in Patent Document 1 is known. Patent Document 1, for example, arranges a filling member formed by folding a sheet-like member inside a structure.

JP 2016-160818 A

Here, the filling member described above is constructed by folding a sheet-like member along a linear fold formed in the sheet-like member. In this case, there is a problem that the thickness of the filling member becomes thin near the bent portion. Therefore, it has been required to secure the thickness in the vicinity of the bent portion.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a filling member, a precursor of the filling member, and a filling structure capable of ensuring a sufficient thickness in the vicinity of the folded portion of the sheet-shaped member.

A filling member according to an aspect of the present invention is a filling member formed by bending a sheet-like member made of a porous material, and includes a bending portion where the sheet-like member is bent, and one side of the bending portion. A first layer formed and a second layer formed on the other side with respect to the folded portion, the first layer and the second layer being superimposed on each other, the folded portion comprising at least Having two folds, the folds being formed by compressing the sheet-like member, where X is the thickness of the sheet-like member and A is the distance between the folds at both ends of the fold, the formula The relationship (1) holds.

0.5X≦A<4X (1)

ADVANTAGE OF THE INVENTION According to this invention, the filling member, the precursor of a filling member, and the filling structure which can ensure thickness in the vicinity of the bending part which bent the sheet-like member can be provided.

It is a schematic sectional drawing of the filling member which concerns on embodiment. FIG. 3 shows a precursor of a filling member; It is an enlarged view near the surface of a sheet-like member. FIG. 4 is a schematic cross-sectional view showing a filling structure filled with a filling member; FIG. 4 is a schematic cross-sectional view of a filling member according to a comparative example; FIG. 5 is a schematic cross-sectional view showing a filling structure according to a comparative example; It is a table showing test conditions and results. It is a photograph which shows the appearance of the filling member which concerns on a comparative example. It is a photograph which shows the appearance of the filling member which concerns on an Example. It is a photograph which shows the appearance of the filling member which concerns on an Example. It is a table showing test conditions and results. It is a photograph which shows the appearance of the filling member which concerns on a comparative example. It is a photograph which shows the appearance of the filling member which concerns on an Example.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a cross-sectional view showing a filling member 1 according to this embodiment. FIG. 2 is a diagram showing the precursor 100 of the filling member 1 according to this embodiment. As shown in FIG. 1, the filling member 1 according to the embodiment is a member configured by folding a sheet-like member 2 made of a porous material. The precursor 100 is composed of the sheet-like member 2 of the filling member 1 before being folded. The filling member 1 is a member with which an object is filled. The filling member 1 may be an acoustic member that suppresses the passage and echo of sound. Moreover, the filling member 1 may be a heat insulating member that suppresses the passage of heat.

As shown in FIGS. 1 and 2, the filling member 1 and the precursor 100 comprise a folded portion 3, a first layer 4 and a second layer 6. FIG. The bent portion 3 is a portion where the sheet-like member 2 is bent. The first layer 4 is a portion formed on one side of the bent portion. The second layer 6 is a portion formed on the other side of the bent portion 3 . The filling member 1 is constructed by bending the precursor 100 at the bending portion 3 and overlapping the first layer 4 and the second layer. Thereby, the first layer 4 and the second layer 6 are superimposed on each other.

In the state of the precursor 100 shown in FIG. 2B, the surface 4a of the first layer 4 and the surface 6a of the second layer 6 are formed on one side of the sheet member 2 in the thickness direction. A surface 4b of the first layer 4 and a surface 6b of the second layer 6 are formed on the other side of the sheet member 2 in the thickness direction.

In the state of the filling member 1 shown in FIG. 1, the first layer 4 and the second layer 6 are arranged so that the surface 4a of the first layer 4 and the surface 6a of the second layer 6 are in contact with each other. superimposed. At this time, the surface 4b of the first layer 4 is configured as one surface 1a of the filling member 1 in the thickness direction. Moreover, the surface 6b of the second layer 6 is configured as the surface 1b on the other side in the thickness direction of the filling member 1 .

Here, as shown in FIG. 3, the sheet member 2 has a skin member 5 on its surface. It has a member 5 . The thickness of the skin member 5 is not particularly limited, but may be set to approximately 0.01 to 1 mm.

The folded portion 3 has two folds 8A, 8B and a connecting portion 9 between the folds 8A, 8B. Although two folds are formed in this embodiment, three or more folds may be formed. The folds 8A and 8B extend parallel to each other with a predetermined separation distance therebetween. The folds 8A and 8B are formed by compressing the sheet-like member 2. As shown in FIG. The connecting portion 9 is a portion that connects the first layer 4 and the second layer 6 via the folding lines 8A and 8B.

In the form shown in FIGS. 1 and 2(b), the two folds 8A and 8B are formed by partially compressing portions of the sheet-like member 2 which are spaced apart from each other. The folds 8A and 8B are formed by partially compressing the sheet member 2 by linearly pressing the sheet member 2 with a pressing device. The fold portions 8A and 8B are thinner than the first layer 4, the second layer 6 and the connecting portion 9. As shown in FIG. The width of the folds 8A and 8B is not particularly limited, but may be set to approximately 0.1 to 5 mm. The thickness of the folds 8A and 8B is not particularly limited, but may be set to approximately 0.1 to 5 mm.

The configuration of the bent portion 3 is not limited to that shown in FIGS. 1 and 2(b), and the configuration shown in FIG. 2(c) may be employed. In the form shown in FIG. 2(c), the two folds 8A and 8B are formed by compressing the portions of the sheet-like member 2 corresponding to the folded portions 3 and forming both ends of the compressed portions. In this case, the portions corresponding to the folds 8A and 8B and the connecting portion 9 are thinner than the first layer 4 and the second layer 6. As shown in FIG. The thicknesses of the folds 8A and 8B and the connecting portion 9 are the same as those of the folds 8A and 8B in FIG. 2(b).

Next, the material of the sheet member 2, etc. will be described. The sheet-like member 2 is a sheet-like member made of a porous material. The sheet-like member 2 may include a porous layer and at least one filler dispersed in the porous layer. The sheet-like member 2 contains air gaps adjacent to the porous layer. For example, the sheet-shaped member 2 includes a porous layer and a heterogeneous filler containing porous particles and having an average surface area of 0.1 m ² /g or more and 10000 m ² /g or less, The member 2 may have an airflow resistance value of greater than or equal to 100 MKSRayls and less than or equal to 5000 MKSRayls. Porous carbon can also be used as the porous particles. Further, for example, the sheet-like member 2 includes a porous layer and an average particle size of 1 μm or more and 1000 μm or less and an average particle size of 0.1 m ² /g or more and 800 m ² /g or less received in the porous layer. and a non-uniform filler having a surface area, and the sheet-like member 2 may have an airflow resistance value of 100 MKSRayls or more and 8000 MKSRayls or less. As the sheet member 2, 3M (registered trademark) Flexile Acoustic Material FAB series (manufactured by 3M) or the like may be used.

Sheet-like member 2 includes one or more porous layers. Useful porous layers include, but are not limited to, nonwoven fibrous layers, perforated films, particulate beds, open cell foams, fiberglass, netting, woven fabrics, and combinations thereof.

Engineered nonwoven fibrous layers containing fine fibers can be effective acoustic absorbers in aerospace, automotive, transportation, and architectural applications. Nonwoven materials having a plurality of fine fibers can be particularly effective at high sound frequencies, a regime where the high surface area of the structure promotes viscous dissipation of sound energy. The nonwoven layer may be made of fiberglass. The polymeric nonwoven layer can be made, for example, by meltblowing or meltspinning.

In meltblowing, one or more thermoplastic polymer streams are extruded through a die containing closely spaced orifices and attenuated by a converging stream of hot air at high velocity to form fine fibers. These fine fibers can be collected on a surface to provide a meltblown nonwoven fibrous layer. Depending on the operating parameters selected, such as the degree of solidification from the molten state, the recovered fibers can be semi-continuous or essentially discontinuous. In certain exemplary embodiments, meltblown fibers of the present disclosure may be oriented at the molecular level. Fibers can be interrupted by imperfections in the melt, crossings of formed filaments, excessive shear due to turbulence used to attenuate the fibers, or other events occurring in the forming process. They are generally found to be semi-continuous or have lengths much greater than the distance between fiber entanglements, so that individual fibers are separated from the fiber mass intact end-to-end. cannot be removed.

In melt spinning, nonwoven fibers are extruded as filaments through a series of orifices, cooled and solidified to form fibers. The filaments are passed through an air space that may contain a moving air stream to cool the filaments and pass through an attenuating (ie, drawing) unit to assist in at least partially drawing the filaments. Fibers made by the melt-spun process can be "spunbonded," whereby a web comprising a set of melt-spun fibers is recovered as a fibrous web, and optionally one to fuse the fibers together. It is used for the above join operations. Meltspun fibers are generally larger in diameter than meltblown fibers.

The fiber is polyolefin, polypropylene, polyethylene, polyester, polyethylene terephthalate, polybutylene terephthalate, polyamide, polyurethane, polybutene, polylactic acid, polyphenylene sulfide, polysulfone, liquid crystal polymer, polyethylene-co-vinyl acetate, polyacrylonitrile, cyclic polyolefin, or these in an amount of at least 35% by weight of the total weight of the plurality of fibers. Suitable fibrous materials also include elastomeric polymers.

Alternatively, the following members may be employed as the sheet-like member 2 . The sheet-like member 2 may be a nonwoven fabric member having high sound absorbing and heat insulating properties by confining air between fibers that are intricately entangled by being composed of a group of ultrafine fibers. As the sheet-like member 2, for example, 3M (registered trademark) Thinsulate (registered trademark) Acoustic Insulation TF series, SF series (manufactured by 3M), or the like is used. For example, the sheet member 2 is a member obtained by mixing PP meltblown fibers and PET short fibers. In addition, as the material of the fiber of the sheet-shaped member 2, for example, the fiber described in paragraph 0023, felt, glass wool, and the like are adopted. In addition, the sheet member 2 alone has characteristics such as sound absorption and heat insulation.

The skin member 5 shown in FIG. 3 will be described. The skin member 5 is a sheet member made of nonwoven fabric. Materials such as meltblown nonwoven fabrics and spunbond nonwoven fabrics are adopted. In addition, as the material of the fiber of the skin member 5, for example, the fiber described in paragraph 0023 can be adopted, and PP, PET, cellulose, etc. are particularly adopted. The skin member 5 has higher waterproofness and shape retention than the inner layer 7 (see FIG. 3) of the sheet-like member 2 and has a function of protecting the inner layer 7 . The skin member 5, unlike the inner layer 7, is characterized by high tear strength.

The density of the sheet-like member 2 may be 0.005 g/cm ³ or more, and may be 0.007 g/cm ³ or more. Further, the density of the sheet-like member 2 may be 0.1 g/cm ³ or less, or may be 0.08 g/cm ³ or less.

Next, the dimensional relationship of the filling member 1 will be described with reference to FIG. When the thickness of the sheet-like member 2 is X and the interval between the folds 8A and 8B at both ends of the folded portion 3 is A, the relationship of formula (1) holds.

0.5X≦A<4X (1)

The thickness (dimension X) of the sheet-like member 2 before folding may be 3 mm or more, and may be 5 mm or more. The thickness (dimension X) of the sheet-like member 2 before folding may be 100 mm or less, and may be 50 mm or less.

Next, a filling structure 150 using the filling member 1 described above will be described with reference to FIG. The filling structure 150 is constructed by placing the filling member 1 described above between a first member 151 and a second member 152 . The filling structure 150 can be used as an acoustic wall or as a thermal insulation wall. The first member 151 is provided so as to cover one surface 1a of the filling member 1 . As the first member 151, for example, a resin part or a non-woven fabric part is adopted. A second member 152 is provided to cover the other surface 1b of the filling member 1 . A steel plate, for example, is employed as the second member 152 . The second member 152 has a bent portion 152a that bends at the position of the bent portion 3 . The bent portion 152a covers the bent portion 3 from the lateral side.

Next, functions and effects of the filling member 1 according to this embodiment will be described.

First, a filling member 200 according to a comparative example will be described with reference to FIGS. 5 and 6. FIG. As shown in FIG. 5, the folded portion 203 of the filling member 200 has a single fold portion 208 . The first layer 204 and the second layer 206 are overlapped by folding the sheet-like member 202 at the folding line 208 . At this time, the vicinity of the bent portion 203 becomes tapered with the crease portion 208 as the leading end, and the thickness of the vicinity of the bent portion 203 becomes thin. When such a filling member 200 is filled in the filling structure 250, a space SP2 between the first member 151 and the filling member 200 and a space SP2 between the second member 152 and the filling member 200 are formed near the bent portion 203. The space SP3 becomes larger.

The filling member 1 according to the present embodiment is a filling member 1 formed by folding a sheet-like member 2 made of a porous material. and a second layer 6 formed on the other side with respect to the bent portion 3, the first layer 4 and the second layer 6 being mutually The folded portion 3 has at least two folds 8A, 8B formed by compressing the sheet-like member 2, the thickness of the sheet-like member 2 being X, Assuming that the interval between the folds 8A and 8B at both ends of the bent portion 3 is A, the relationship of formula (1) holds.

0.5X≦A<4X (1)

In the filling member 1 according to this embodiment, the first layer 4 and the second layer 6 are superimposed on each other by folding the sheet member 2 at the folding portion 3 . The fold 3 has at least two folds 8A, 8B formed by compressing the sheet-like member 2 . Therefore, when the sheet-like member 2 is folded at the folding portion 3, it is folded at least at the positions of the two folding lines. Thereby, the portions between the folds are arranged so as to extend in the thickness direction. Assuming that the thickness of the sheet member 2 is X and the interval between the folds 8A and 8B at both ends of the folded portion 3 is A, the relationship of the above formula (1) holds. Accordingly, by setting "0.5X≦A", a sufficient thickness can be ensured at the bent portion. Moreover, by setting "A<4X", it is possible to prevent the thickness from being maintained due to buckling at the bent portion. As described above, it is possible to secure the thickness in the vicinity of the bent portion where the sheet-shaped member is bent. For example, as shown in FIG. 4, in the vicinity of the bent portion 3, the space SP2 between the first member 151 and the filling member 1 and the space SP3 between the second member 152 and the filling member 1 are 6 smaller than the spaces SP2 and SP3 of the filling structure 250 according to the comparative example of No. 6.

The density of the sheet member 2 may be 0.005 g/cm ³ or more and 0.1 g/cm ³ or less. In this case, sufficient sound absorption and heat insulation can be exhibited.

The thickness of the sheet member 2 before folding may be 3 mm or more and 100 mm or less. In this case, the sheet-like member 2 has a certain thickness, so that the effect of the two bent portions can be sufficiently exhibited. Moreover, it is possible to prevent the sheet member 2 from being too thick and difficult to bend.

The two folds 8A and 8B may be formed by partially compressing portions of the sheet-like member 2 that are spaced apart from each other. In this case, the inner space SP1 (see FIG. 1) near the bent portion can be filled with the thickness of the connection portion 9 between the fold portion 8A and the fold portion 8B.

The two folds 8A and 8B may be formed by compressing portions corresponding to the folded portions 3 in the sheet-like member 2, and forming the respective ends of the compressed portions. In this case, the end of the filling member in the area of the fold 3 can be straightened.

The sheet member 2 may have a skin member 5 on its surface. In this case, the strength of the surface of the sheet member 2 can be improved.

The filling member 1 may be an acoustic member that suppresses the passage and echo of sound. In this case, it is possible to suppress passage and echo of sound in the portion filled with the filling member 1 .

The filling member 1 may be a heat insulating member that suppresses the passage of heat. In this case, it is possible to suppress the passage of heat through the portion filled with the filling member 1 .

The precursor of the filling member is composed of the sheet-like member 2 of the filling member 1 described above before being folded. In this case, the filling member can be easily configured by folding the sheet member 2 at the folding lines 8A and 8B.

The filling structure 150 is constructed by placing the filling member 1 described above between a first member 151 and a second member 152 . In this case, the space between the first member 151 and the second member 152 can be filled with the filling member 1 while ensuring the thickness in the vicinity of the folded portion of the sheet member.

The invention is not limited to the embodiments described above. For example, the configurations of the filling member and the filling structure shown in the above-described embodiments are merely examples, and can be changed as appropriate within the scope of the present invention.

[Example]
Next, examples and comparative examples of the filling member will be described with reference to FIGS. 7 to 13. FIG. First, Comparative Examples 1 to 4 and Examples 1 to 5 having conditions as shown in the table of FIG. 7 were prepared. In Comparative Examples 1 to 3, the relationship of "0.5X>A" holds, which is outside the range of the following formula (1). Comparative Example 4 satisfies the relationship of "A=4X" and falls outside the range of the following formula (1). All of Examples 1 to 4 satisfy the condition of formula (1). It should be noted that those described as "compression processing" in "A: Spacing between two folds" have a connecting portion as shown in FIG. It has a connecting part as shown in (b). FIG. 10 shows a photograph of the folded portion of Example 3 as an example of the folded portion shown in FIG. 2(b). FIG. 10 shows a photograph of the folded portion of Example 4 as an example of the folded portion shown in FIG. 2(c). FIG. 8 shows photographs of the precursors of the filling members of Comparative Examples 1 to 4 and photographs of the vicinity of the bent portion of the filling members. FIG. 9 shows photographs of the precursors of the filling members of Examples 1 to 5 and photographs of the vicinity of the bent portion of the filling members. As shown in FIG. 7, in Comparative Examples 1 to 3, the thickness of the bent portion was insufficient due to the dimension A being too small. In Comparative Example 4, since the dimension A was too large, the bent part buckled and the thickness could not be maintained. In Examples 1 to 4, the thickness of the bent portion could be maintained because the dimension A satisfied the condition of formula (1).

0.5X≦A<4X (1)

Next, Comparative Examples 5 to 8 and Examples 6 to 9 having the conditions shown in the table of FIG. 11 were prepared. In Comparative Examples 5 to 7, the relationship of "0.5X>A" holds, which is outside the range of formula (1). Comparative Example 8 satisfies the relationship "A=4X" and falls outside the range of formula (1). All of Examples 6 to 9 satisfy the condition of formula (1). FIG. 12 shows photographs of the precursors of the filling members of Comparative Examples 5 to 8 and photographs of the vicinity of the bent portion of the filling members. FIG. 13 shows photographs of the precursors of the filling members of Examples 6 to 9 and photographs of the vicinity of the bent portion of the filling member. As shown in FIG. 11, in Comparative Examples 5 to 7, the thickness of the bent portion was insufficient due to the dimension A being too small. In Comparative Example 8, the dimension A was too large, so that the bending part buckled and the thickness could not be maintained. In Examples 6 to 9, the thickness of the bent portion could be maintained because the dimension A satisfied the condition of formula (1).

[Mode 1]
A filling member formed by folding a sheet-like member made of a porous material,
a bending portion where the sheet-like member is bent;
a first layer formed on one side with respect to the bent portion;
A second layer formed on the other side with respect to the bent portion,
the first layer and the second layer are superimposed on each other;
the fold has at least two folds;
The fold portion is formed by compressing the sheet-like member,
The filling member satisfies the relationship of formula (1), where X is the thickness of the sheet member and A is the interval between the folds at both ends of the folded portion.

0.5X≦A<4X (1)
[Mode 2]
The filling member according to mode 1, wherein the sheet member has a density of 0.005 g/cm ³ or more and 0.1 g/cm ³ or less.
[Mode 3]
The filling member according to mode 1 or 2, wherein the sheet member has a thickness of 3 mm or more and 100 mm or less before bending.
[Mode 4]
The filling member according to any one of modes 1 to 3, wherein the two folds are formed by partially compressing portions of the sheet-like member that are spaced apart from each other.
[Mode 5]
4. The filling member according to any one of modes 1 to 3, wherein the two folds are formed by compressing portions of the sheet-like member corresponding to the folded portions, and formed at both ends of the compressed portions.
[Mode 6]
The filling member according to any one of Modes 1 to 5, wherein the sheet member has a skin member on its surface.
[Mode 7]
7. The filling member according to any one of Embodiments 1 to 6, which is an acoustic member that suppresses the passage and echo of sound.
[Mode 8]
The filling member according to any one of Embodiments 1 to 7, which is a heat insulating member that suppresses the passage of heat.
[Mode 9]
A precursor of the filling member, in the filling member according to any one of modes 1 to 8, which is constituted by the sheet-like member before being folded.
[Mode 10]
A filling structure constituted by placing a filling member according to any one of aspects 1-8 between a first member and a second member.

DESCRIPTION OF SYMBOLS 1... Filling member 2... Sheet-like member 3... Folding part 4... First layer 5... Skin member 6... Second layer 8A, 8B... Crease part 150... Filling structure 151... Second 1 member, 152 . . . the second member.

Claims (10)

A filling member formed by folding a sheet-like member made of a porous material,
a bending portion where the sheet-like member is bent;
a first layer formed on one side with respect to the bent portion;
A second layer formed on the other side with respect to the bent portion,
the first layer and the second layer are superimposed on each other;
the fold has at least two folds;
The fold portion is formed by compressing the sheet-like member,
The filling member satisfies the relationship of formula (1), where X is the thickness of the sheet member and A is the interval between the folds at both ends of the folded portion.

0.5X≦A<4X (1) The filling member according to claim 1, wherein the sheet member has a density of 0.005 g/ ^cm3 or more and 0.1 g/ ^cm3 or less. The filling member according to claim 1, wherein the sheet member has a thickness of 3 mm or more and 100 mm or less before being folded. 2. The filling member according to claim 1, wherein the two folds are formed by partially compressing portions of the sheet-like member spaced apart from each other. 2. The filling member according to claim 1, wherein the two folds are formed by compressing portions of the sheet-like member corresponding to the folded portions, and forming the two folds on both ends of the compressed portions. 2. The filling member according to claim 1, wherein said sheet member has a skin member on its surface. 2. The filling member according to claim 1, which is an acoustic member for suppressing the passage and reflection of sound. 2. The filling member according to claim 1, which is a heat insulating member that suppresses the passage of heat. A precursor of the filling member according to any one of claims 1 to 8, which is composed of the sheet-like member before being folded. A filling structure constituted by placing a filling member according to any one of claims 1 to 8 between a first member and a second member.

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