JP2006206692A - Foaming member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foaming member wherein flow of a foaming material can be effectively suppressed. <P>SOLUTION: The foaming member 11 is equipped with a foaming framework member 12 and an adhesive framework member 13, wherein the foaming framework member 12 is formed from the foaming material which is foamed by external heat, and the adhesive framework member 13 is formed from a self-adhesive material. An adhesive-side protrusion 14 protrudes from the external surface of the adhesive framework member 13 and is surrounded by the foaming framework member 12. At use, the foaming member 11 is attached onto the interior of a structural member via the adhesive framework member 13. The foaming member 11 is intended for attaching a foam formed from the foaming framework member 12 onto the structural member, wherein the foam increases the sound absorbency, sound insulation, damping property, etc. of the structural member. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a foam material applied to various structural members.

  2. Description of the Related Art Conventionally, structural members represented by vehicle pillars and the like sometimes generate noise due to vibrations of the structural members as the vehicle travels. In order to suppress the occurrence of such abnormal noise, it has been proposed to attach a foam to the structural member. That is, the noise generated from the structural member is suppressed by reducing the vibration of the structural member by the foam.

In order to attach the foam to the structural member, a foam material including a foam member that is foamed by external heating and an adhesive member that is attached to the foam member is used (see Patent Documents 1 and 2). This foam material is used by sticking to the inside of the structural member by utilizing the self-adhesiveness of the adhesive member. Then, when a predetermined amount of heat moves from the outside to the foam member, foaming (expansion) of the foam member starts, and finally a foam is formed from the foam member. As a result, the foam is attached to the structural member. Is done.
JP-A-1-170683 Japanese Patent Laid-Open No. 7-238276

  By the way, in the process in which a foam is formed from a foam member, the foam member changes to a state having fluidity as the foam member is softened by external heating. For this reason, depending on the curing speed of the foam material constituting the foam member, a phenomenon occurs in which the foam material flows due to the influence of its own weight or the like. As described in the above-mentioned patent document, although the phenomenon of the foam material flowing is suppressed to some extent by the adhesive force of the adhesive member joined to the foam member, there is still room for improvement.

  The present invention has been made in view of such conventional circumstances, and an object thereof is to provide a foam material that can effectively suppress the flow of the foam material.

  In order to achieve the above object, the invention according to claim 1 includes a foam member formed of a foam material that foams by external heating, and an adhesive member formed of a self-adhesive adhesive material. The foamed member is bonded to the adhesive member and is attached to an adherend through the adhesive member. The adhesive member has an adhesive-side protruding portion that protrudes from an outer surface thereof. The gist is that the sticking side protrusion is surrounded by the foamed member.

According to this configuration, when the foamed member changes to a fluid state as the foamed member is softened by external heating, the adhesive side protruding portion functions as a flow resistance of the foamed material.
Invention of Claim 2 formed the said adhesion side protrusion part in the lower edge part of the perpendicular direction in the said foaming material of Claim 1, when the said adhesion member is affixed on the said to-be-adhered body. This is the gist.

  According to this configuration, when the foam material flows in the vertical direction due to the influence of the weight of the foam member in the process of forming the foam from the foam member, the adhesive side protrusion formed at the lower edge portion does not flow. Acts as a resistor.

  The invention according to claim 3 is the foam material according to claim 2, wherein the sticking side protruding portion is formed on an upper edge portion facing in a vertical direction when the sticking member is attached to the adherend. The gist is the formation.

According to this configuration, since the bonding area between the foam member and the adhesive member is increased, it is easy to ensure the holding force of the foam member by the adhesive member.
According to a fourth aspect of the present invention, in the foam material according to any one of the first to third aspects, the adhesive side protrusion is formed in a horizontal direction when being stuck to the adherend. The summary is as follows.

  According to this configuration, in the process in which the foam is formed from the foam member, the flow of the foam material in the vertical direction due to the influence of the weight of the foam member is suppressed in the horizontal direction by the adhesive side protrusion.

According to a fifth aspect of the present invention, in the foamed material according to any one of the first to fourth aspects, the foaming member is formed with a foaming side projecting portion projecting from an outer surface thereof.
The gist is that the foam-side protruding portion is surrounded by the adhesive member.

According to this configuration, the pressure-sensitive adhesive member that surrounds the foam side protrusion functions as a flow resistance of the foam material.
The invention according to claim 6 includes a foam member formed of a foam material that foams by external heating, and an adhesive member formed of a self-adhesive adhesive material, and the foam member is attached to the adhesive member. In the foam material bonded and bonded to the adherend through the same adhesive member, the foam member is formed with a plurality of foam side protrusions protruding from the outer surface, and the foam side protrusion is the adhesive member. The gist is that it is surrounded by the members.

  According to this configuration, when the foamed member changes to a fluid state as the foamed member is softened by external heating, the adhesive member that surrounds the foam-side protruding portion functions as a flow resistance of the foamed material. Furthermore, since a plurality of foam side protrusions are formed, the bonding area between the foam member and the adhesive member is increased. As a result, the holding force of the foam member by the adhesive member is easily ensured.

  According to the present invention, the flow of the foam material can be effectively suppressed.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS.
As shown in FIG. 1, the foam material 11 includes a foam member 12 having a square plate shape and an adhesive member 13 having a square plate shape. The foam member 12 is formed from a foam material that foams by external heating, and the adhesive member 13 is formed from a self-adhesive adhesive material. One side surface of the foam member 12 and one side surface of the adhesive member 13 are configured as a foam side joint surface 12a and an adhesive side joint surface 13a, respectively. The foam member 12 and the adhesive member 13 include the foam side joint surface 12a and the adhesive side joint surface. It joins so that it may match 13a. Note that the foam member 12 and the adhesive member 13 are joined to each other using the self-adhesiveness of the adhesive member 13 (that is, the adhesive-side joining surface 13a).

  The foam material constituting the foam member 12 includes a base material, a foaming agent, a crosslinking agent, a filler, a plasticizer, and the like. Examples of the base material include synthetic resins, elastomers, and rubbers. Synthetic resins are classified into thermosetting resins and thermoplastic resins. Examples of thermosetting resins include epoxy resins, phenol resins, urethane resins, and acrylic resins. Thermoplastic resins include polyolefins, EVA (ethylene / ethylene / ethylene resins). Vinyl acetate copolymer). Examples of the elastomer include SBS (styrene / butadiene / styrene block copolymer), and examples of the rubber include NR (natural rubber), ENR (epoxidized natural rubber), and EPM (ethylene / propylene rubber). Examples of the foaming agent include azodicarbonamide and dinitropentamethylenetetramine, examples of the crosslinking agent include dimethylurea and dicyandiamide, and examples of the filler include calcium carbonate, barium sulfate, ferrite, and silica.

  The pressure-sensitive adhesive material constituting the pressure-sensitive adhesive member 13 is a material based on a synthetic resin, elastomer, rubber or the like, and specifically, a rubber-based pressure-sensitive adhesive material, an acrylic pressure-sensitive adhesive material, a urethane-based pressure-sensitive adhesive material, or a silicone-based pressure-sensitive adhesive material. Etc. For example, examples of the base material of the rubber-based adhesive material include BR (butadiene rubber), IIR (isobutylene / isoprene copolymer rubber), SBR (styrene / butadiene rubber) and the like. The volume expansion coefficient of the pressure-sensitive adhesive material is set to be smaller than the volume expansion coefficient of the foam material, so that the pressure-sensitive adhesive member 13 exhibits a function of holding the foam member 12 when the foam member 12 foams. Yes.

  As shown in FIG. 2, the foam material 11 is attached to a structural member 31 as an adherend via an adhesive member 13. More specifically, the structural member 31 is, for example, a member constituting a cowl of a vehicle, and is formed from a steel plate. The foam material 11 has the other surface of the adhesive member 13, that is, the surface opposite to the adhesive-side bonding surface 13 a as an attachment surface 13 b that is attached to the structural member 31. The foam material 11 is disposed at a predetermined site in the structural member 31 as shown by a two-dot chain line in FIG. 2 by sticking the attachment surface 13b to the structural member 31. The structural member 31 is disposed so as to extend in the vertical direction with the lower direction in FIG. 2 as the vertical direction, and the foam material 11 is heated from the outside in this state. That is, in FIG.1 and FIG.2, the vertical direction in the foam material 11 shows a downward direction, and a horizontal direction shows the left-right direction when the foam material 11 is seen from the attachment surface 13b side.

  As shown in FIG. 1, the adhesive member 13 has an adhesive-side protruding portion 14 that protrudes from the outer surface thereof. The adhesion-side protrusion 14 includes an upper adhesion-side protrusion 15 and a lower adhesion-side protrusion 16. The upper adhesive side protrusion 15 is formed at the upper edge of the adhesive member 13 facing in the vertical direction, and the lower adhesive side protrusion 16 is formed at the lower edge of the adhesive member 13 in the vertical direction. These adhesion side protrusions 15 and 16 are surrounded by the foam member 12. That is, the distal end wall 15a and the lower end wall 15b of the upper adhesive side protruding portion 15 and the distal end wall 16a and the upper end wall 16b of the lower adhesive side protruding portion 16 constitute a part of the adhesive side joining surface 13a, so that the foam side It is comprised so that it may be enclosed by the joint surface 12a. More specifically, the foam member 12 is formed with an upper foam side recess 12b and a lower foam side recess 12c corresponding to the adhesive side protrusions 15 and 16, respectively. The foam side recesses 12b and 12c are formed on the foam side joint surface. It constitutes a part of 12a. And the foaming member 12 and the adhesion member 13 are couple | bonded in the state by which each adhesion side protrusion part 15 and 16 was each fitted by each foaming side recessed part 12b and 12c. Each adhesion side protrusion part 15 and 16 comprises the rectangular plate shape extended in the left-right direction, respectively, and is formed over the left-right direction of the adhesion side joining surface 13a.

  On the other hand, the foaming member 12 is formed with a foam-side protruding portion 17 protruding from the outer surface thereof. The foam side protrusion 17 is formed at the central portion in the vertical direction of the foam member 12 with the formation of the foam side recesses 12b and 12c. The foam side protrusion 17 is surrounded by the adhesive member 13. That is, the upper end wall 17a, the lower end wall 17b, and the tip wall 17c of the foam side protrusion 17 are configured to be surrounded by the adhesive side joint surface 13a by constituting a part of the foam side joint surface 12a. . More specifically, the adhesive member 13 is formed with an adhesive-side recess 13c along with the formation of the adhesive-side protrusions 15 and 16, and this adhesive-side recess 13c constitutes a part of the adhesive-side joining surface 13a. Yes. And the foaming member 12 and the adhesion member 13 are couple | bonded in the state by which the foaming side protrusion part 17 was fitted by the adhesion side recessed part 13c. The foam side protrusion 17 has a long square plate shape extending in the left-right direction, and is formed over the left-right direction of the foam side joining surface 12a.

  The foam material 11 is manufactured by molding the adhesive member 13 and the foam member 12 by, for example, extrusion molding, injection molding, or the like, and sticking the adhesive member 13 to the foam member 12. As shown in FIG. 3A, in order to use the foam material 11, the foam material 11 is disposed at a predetermined portion of the structural member 31 by sticking the mounting surface 13 b to one side surface of the structural member 31. To do.

  The structural member 31 constitutes a part of the vehicle body, and the vehicle body is subjected to coating such as electrodeposition coating or baking coating. The foam material 11 is heated at a predetermined temperature for a predetermined time when the vehicle body is heated in the drying furnace in the manufacturing process of the vehicle. As the foam member 12 is softened by the external heating, the foam member 12 changes to a fluid state. At this time, each adhesive side protrusion 15 and 16 is formed in the adhesive member 13, the tip wall 15 a and the lower end wall 15 b of the upper adhesive side protrusion 15, and the tip wall 16 a and the upper end wall 16 b of the lower adhesive side protrusion 16. Is surrounded by the foam side joining surface 12a. For this reason, each adhesion side protrusion part 15 and 16 functions as a flow resistance at the time of a foam material flowing.

  Subsequently, when a predetermined amount of heat moves from the outside to the foaming member 12, foaming (expansion) of the foamed material is started. And the foam 18 is formed as shown in FIG.3 (b), when the foamed foamed material is hardened | cured by the crosslinking reaction etc. of the base material which comprises a foamed material. At this time, since the flow of the foam material is suppressed by the adhesion-side protruding portion 14, the foam material is foamed (expanded) while the positional deviation of the foam material with respect to the attachment position of the foam material 11 is suppressed. Become. Therefore, the foam 18 is easily disposed at a predetermined position. Since the foam 18 is attached to the structural member 31 by the foam material 11, the sound absorbing property, sound insulating property, vibration damping property and the like of the structural member 31 are enhanced.

The effects exhibited by this embodiment will be described below.
(1) The adhesive side protrusion 14 is formed on the adhesive member 13, and the adhesive side protrusion 14 is surrounded by the foam member 12. For this reason, when the foaming member 12 changes to a fluid state as the foaming member 12 is softened by external heating, the adhesion-side protruding portion 14 can function as a flow resistance of the foamed material. Therefore, the flow of the foam material can be effectively suppressed. As a result, foaming (expansion) of the foam material is performed while suppressing the displacement of the foam material with respect to the position where the foam material 11 is attached. Therefore, since the foam 18 is easily installed at a predetermined position, the function of the foam 18 can be sufficiently exhibited.

  Conventionally, for example, when trying to suppress the flow of the foam material by changing the composition of the foam material itself and appropriately setting the curing rate of the foam material, there is a limit to the suppression of such flow, It was a limitation in the design of the foam material itself. The foamed material 11 forms the adhesive side protruding portion 14, thereby suppressing the flow of the foamed material due to the structure of the foamed member 12 and the adhesive member 13. In this respect, the degree of freedom regarding the design of the foam material itself is secured.

  (2) A lower adhesive side protrusion 16 is formed at the lower edge of the adhesive member 13. According to this configuration, when the foam material flows in the vertical direction due to the influence of the weight of the foam member 12 in the process in which the foam 18 is formed from the foam member 12, the lower adhesive side protrusion 16 is moved in the vertical direction. It functions effectively as a flow resistance. Therefore, the flow of the foam material in the vertical direction can be effectively suppressed.

  (3) An upper adhesive side protruding portion 15 and a lower adhesive side protruding portion 16 are formed on the upper edge portion and the lower edge portion of the adhesive member 13, respectively. According to this configuration, since the bonding area between the foam member 12 and the adhesive member 13 is increased, it is easy to ensure the holding force for the adhesive member 13 to hold the foam member 12. For this reason, the flow of the foam material can be more effectively suppressed.

  (4) Since the adhesion side protrusion part 14 is formed over the horizontal direction, the flow of the foaming member 12 by the influence of self-weight can be suppressed over a horizontal direction. Therefore, the flow of the foam material in the vertical direction can be more effectively suppressed.

  (5) The foaming member 12 is formed with a foaming side protrusion 17, and the foaming side protrusion 17 is surrounded by the adhesive member 13. When comprised in this way, the adhesion member 13 which surrounds the foaming side protrusion part 17 can be functioned as the flow resistance of a foaming material. Furthermore, the bonding area between the foam member 12 and the adhesive member 13 is further increased by the foam-side protrusion 17. For this reason, it becomes easy to ensure the joining strength of the foam side joining surface 12a and the adhesion side joining surface 13a, and the adhesive member 13 holds the foam member 12 even when the foam member 12 changes to a fluid state. The force is more easily secured. As a result of the synergistic action of the holding force by the adhesive member 13 and the function of the adhesive side protrusion 14 and the foam side protrusion 17 as the flow resistance, the flow of the foam material can be further suppressed.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. Here, points different from the first embodiment will be mainly described, and common points will be simply denoted by the same member numbers, and description thereof will be omitted.

  As shown in FIGS. 9A and 9B, the foam member 12 is formed with a plurality of columnar protrusions 23 as foam side protrusions protruding from the outer surface thereof. These columnar protrusions 23 are formed at predetermined intervals, while the adhesive member 13 has a plurality of through holes 13 d corresponding to the columnar protrusions 23. The foam member 12 and the adhesive member 13 are joined in a state where the columnar protrusion 23 is inserted into the through hole 13d, that is, in a state where the columnar protrusion 23 is surrounded by the adhesive member 13. More specifically, the peripheral walls 23a of the columnar protrusions 23 are respectively surrounded by the inner surface of the through hole 13d, and the tip wall 23b of the columnar protrusion 23 is exposed from the mounting surface 13b.

  Now, as the foamed member 12 changes to a fluid state as the foamed member 12 is softened by external heating, the adhesive member 13 surrounding the columnar protrusion 23 functions as a flow resistance of the foamed material. Further, since a plurality of columnar protrusions 23 are formed, the bonding area between the foaming member 12 and the adhesive member 13 is increased, and as a result, the holding force of the foaming member by the adhesive member 13 is easily secured. Therefore, according to the foam material 11 of the present embodiment, the flow of the foam material can be effectively suppressed.

The embodiment may be modified as follows.
-The shape of the adhesion side protrusion part 14 and the foaming side protrusion part 17 of 1st Embodiment is not restricted to a long square plate shape, You may change into other shapes, such as a triangular plate shape, column shape, and frame shape. For example, as shown in FIGS. 4A and 4B, the adhesion-side protrusion 14 may be changed to a square frame-like adhesion-side protrusion 19. That is, the rectangular frame-shaped adhesive-side protrusion 19 is formed on the peripheral edge of the square-plate-shaped adhesive member 13. When comprised in this way, the flow of a foaming material can be suppressed suitably in the peripheral part of the foaming material 11. FIG.

-As a foaming side protrusion part of 2nd Embodiment, you may apply the foaming side protrusion part of other shapes, such as square plate shape and a frame shape, besides the columnar protrusion 23. FIG.
-You may abbreviate | omit the foaming side protrusion part 17 of 1st Embodiment. For example, as shown in FIG. 4A and FIG. 5A, a square plate-like foam member 20 that does not have the foam-side protruding portion 17 may be employed. That is, as shown in FIGS. 4A and 4B, the foamed member 20 is joined to the inside of the square frame-shaped adhesive-side protruding portion 19. Moreover, as shown to Fig.5 (a), the foaming member 20 is joined to the upper side of the upper end wall 16b. This foam member 20 surrounds only the upper end wall 16b.

-You may divide and form the foaming side protrusion part 17 of 1st Embodiment into plurality.
-Although the adhesion side protrusion part 14 of 1st Embodiment is divided | segmented and comprised in the upper adhesion side protrusion part 15 and the lower adhesion side protrusion part 16, you may comprise the adhesion side protrusion part 14 independently. For example, as shown in FIGS. 5A and 5B, the upper adhesive side protrusion 15 may be omitted, and only the lower adhesive side protrusion 16 may be configured.

  -You may divide and form the adhesion side protrusion part 14 of 1st Embodiment in three or more. For example, as shown in FIG. 6A, an intermediate adhesive side protruding portion 21 may be further formed at an intermediate portion in the vertical direction of the foam member 12.

  -You may form the adhesion side protrusion part 14 of 1st Embodiment partially with respect to the horizontal direction of the adhesion member 13. As shown in FIG. For example, as shown in FIG. 6A, an intermediate adhesive side protruding portion 21 formed at an intermediate portion in the horizontal direction of the adhesive member 13 may be adopted as the adhesive side protruding portion 14.

  In the first embodiment, the adhesion-side protrusion is surrounded by the foam member. In addition to the adhesion-side protrusion being partially surrounded by the foam member, the entire adhesion-side protrusion is the foam member. Including being surrounded. For example, the intermediate adhesion side protrusion 21 shown in FIG. 6A is an example in which the entire adhesion side protrusion is surrounded by the intermediate foam side recess 22 formed in the foam member 12.

  -The foam side protrusion of each embodiment is surrounded by the adhesive member. In addition to the foam side protrusion being partially surrounded by the adhesive member, the entire foam side protrusion is surrounded by the adhesive member. Including that. For example, the through-hole 13d shown in FIGS. 9A and 9B may be changed to a recess, and the entire columnar protrusion 23, that is, the peripheral wall 23a and the tip wall 23b may be surrounded by the recess. Good.

  -You may comprise the outer periphery shape of the foam side joining surface 12a in each embodiment, and the outer periphery shape of the adhesion side joining surface 13a in a different shape. For example, as shown in FIG. 6B, the outer peripheral shape of the adhesion-side bonding surface 13a in the first embodiment may be changed to a polygonal shape other than a rectangular shape.

  -You may change suitably the shape of the attachment surface 13b in each embodiment according to the shape of the sticking part in the inside of the structural member 31. FIG. That is, the attachment surface 13b may be a curved surface, or the attachment surface 13b may have irregularities.

  The bonding of the foam side bonding surface 12a and the adhesion side bonding surface 13a in each embodiment is the bonding by bonding using the self-adhesive property of the adhesive member 13, as well as the foam side bonding surface 12a and the adhesion side bonding surface. In addition, an adhesive layer is provided separately from 13a, and bonding using the adhesive layer is also included.

  The foam material 11 in each embodiment is arranged by sticking using the self-adhesiveness of the pressure-sensitive adhesive member 13 to the inside of the structural member 31, and uses an adhesive, a double-sided tape or the like as necessary. May be arranged.

  -The foam material 11 in each embodiment is good also as a to-be-adhered body, for example, hollow structure members, such as a vehicle pillar. As shown in FIGS. 7 and 8A, the hollow structural member 32 includes an inner panel 33 and an outer panel 34. The inner panel 33 and the outer panel 34 are made of steel plates, and the hollow structural member 32 is formed by joining the flange portions 35 of the panels 33 and 34 by welding or the like. The foam material 11 is disposed at a predetermined position inside the hollow structural member 32 by sticking the mounting surface 13b inside the hollow structural member 32 (inner surface of the inner panel 33 in FIGS. 7 and 8A). Is done. When a predetermined amount of heat moves to the foam member 12 from the outside, the foam member 12 starts to foam, and the foam 18 is formed as shown in FIG. The voids of the hollow structural member 32 are filled with the foam 18, so that the sound absorbing property, sound insulating property, vibration damping property, dustproof property and the like of the hollow structural member 32 are enhanced. Even in this case, since the flow of the foamed material can be effectively suppressed, the foamed material is expanded (expanded) while the positional deviation of the foamed material with respect to the attachment position of the foamed material 11 is suppressed. Therefore, since the foam 18 is easily filled in a predetermined position, the function of the foam 18 can be sufficiently exhibited.

  -As an adherend to which the foam material 11 of each embodiment is applied, in addition to structural members such as covers and door panels, pillars, rocker panels, hollow structural members such as inside doors, various hollow panels in buildings, etc. It is done. The shape of the adherend to which the foam material 11 is applied is not particularly limited.

The disassembled perspective view which shows the foam material in 1st Embodiment. The perspective view which shows a foam material and a structural member. (A) is sectional drawing which shows the structural member with which the foam material was mounted | worn, (b) is sectional drawing which shows the structural member with which the foam was attached. (A) is a disassembled perspective view which shows another foam material, (b) is sectional drawing which shows the structural member with which the foam material was mounted | worn. (A) And (b) is sectional drawing which shows the structural member to which another foaming material was attached, respectively. (A) And (b) is a disassembled perspective view which shows another foaming material. The perspective view which shows the foaming material in 1st Embodiment, and the hollow structure member of a decomposition | disassembly state. (A) is sectional drawing which shows the hollow structural member with which the foam material was mounted | worn, (b) is sectional drawing which shows the hollow structural member with which the foam was filled. (A) is a disassembled perspective view which shows the foam material of 2nd Embodiment, (b) is sectional drawing which shows the structural member to which the foam material was attached.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Foam material 12, 20 ... Foam member, 12a ... Foam side joint surface, 12b ... Upper foam side recess, 12c ... Lower foam side recess, 13 ... Adhesive member, 13a ... Adhesion side joint surface, 13b ... Mounting surface, 13c: Adhesion side recess, 13d: Through hole, 14, 19 ... Adhesion side protrusion, 15 ... Upper adhesion side protrusion, 15a, 16a, 17c, 23b ... Tip wall, 15b, 17b ... Lower end wall, 16 ... Lower adhesion Side projection, 16b, 17a ... upper end wall, 17 ... foam side projection, 18 ... foam, 21 ... intermediate adhesive side projection, 22 ... middle foam side recess, 23 ... columnar projection, 23a ... peripheral wall, 31 ... structure 32, a hollow structural member, 33, an inner panel, 34, an outer panel, 35, a buttocks.

Claims (6)

A foam member formed from a foam material that foams by external heating;
An adhesive member formed from a self-adhesive adhesive material;
In the foam material bonded to the adherend through the adhesive member while the foam member is bonded to the adhesive member,
The adhesive member is formed with an adhesive-side protruding portion that protrudes from the outer surface,
The foam material, wherein the adhesive side protrusion is surrounded by the foam member. The foaming material according to claim 1, wherein the adhesion-side protruding portion is formed on a lower edge portion in a vertical direction when the adhesion member is attached to the adherend. The foam material according to claim 2, wherein the adhesion-side protruding portion is formed on an upper edge portion facing in a vertical direction when the adhesive member is attached to the adherend. The foaming material according to any one of claims 1 to 3, wherein the adhesion-side protruding portion is formed in a horizontal direction when being stuck to the adherend. The foam member is formed with a foam-side protrusion that protrudes from the outer surface thereof,
The foam material according to any one of claims 1 to 4, wherein the foam-side protruding portion is surrounded by the adhesive member. A foam member formed from a foam material that foams by external heating;
An adhesive member formed from a self-adhesive adhesive material;
In the foam material bonded to the adherend through the adhesive member while the foam member is bonded to the adhesive member,
The foam member is formed with a plurality of foam side protrusions projecting from the outer surface thereof,
The foaming material characterized in that the foaming side protrusion is surrounded by the adhesive member.

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