JP2023012968A - Automobile door hole seal material and method for manufacture thereof - Google Patents

Abstract

To make it possible to suppress deformation of a solid resin such as an outer peripheral lip part due to thermal shrinkage as much as possible.SOLUTION: A hole seal material 5 for an automobile door 1 is a same molding material of a foam body part 6 configured from a foam resin and an outer peripheral lip part 7 configured from a solid resin, and is fixed so that a tip 721 of the outer peripheral lip part 7 is pressed against an outer peripheral part 43 of an opening 41 of an inner panel 4 so as to contact therewith. A standing wall 63 is circumferentially provided on an outer side of a core back scar groove 64 in the foam body part 6, a non-foam standing wall part 631 configured from a solid resin is formed on an outer side of the standing wall part 63, and the outer peripheral lip part 7 is so formed as to project to an outer side from the non-foam standing wall part 631.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to a hole seal material for sealing an opening of an inner panel of an automobile door, and a manufacturing method thereof.

Various parts such as a speaker device and a door lock device are provided in the space between the inner panel and the outer panel of an automobile door, and openings are formed in the inner panel for mounting these various parts. there is This opening is closed using a hole seal material such as those disclosed in Patent Documents 1 and 2.

In the structures disclosed in Patent Documents 1 and 2, the hole seal material is composed of a sheet-shaped seal body made of a foam material and a synthetic resin film laminated and fixed to the seal body, and the peripheral edge portion of the opening of the inner panel. The periphery of the synthetic resin film is adhered with a butyl sealant, and the opening is closed with a hole sealant.

Japanese Patent Application Laid-Open No. 2018-2094 Japanese Patent Application Laid-Open No. 2018-58402

By the way, as a door hole seal structure for sealing the opening of the inner panel, in addition to the structure of Patent Documents 1 and 2, as shown in FIG. A hole seal material 101, which is the same molding material as the outer peripheral lip portion 103 made of foamed resin, is formed, and the hole seal material 101 is arranged so as to close the opening 202 of the inner panel 201. A structure in which the tip portion 104 of the outer peripheral lip portion 103 is pushed against the outer peripheral portion 203 of the opening portion 202 of the inner panel 201 by elastic biasing is conceivable to ensure the sealing performance.

As shown in FIG. 7(a), such a hole seal material 101 is made by filling a cavity 300 formed by partitioning fixed molds 301 and 302 and a movable mold 303 with foamable molten resin. It is possible to form the mold 303 by core-backing in the direction of the thick arrow in the figure.

However, in the hole seal material 101 formed by core-back, a non-contact region 105 that does not come into contact with either the movable mold 303 or the fixed mold 302 is generated when the movable mold 303 is core-backed. In foamed resin molding of the core back, the resin in the area in contact with the mold is cooled by contact with the mold, while the resin in the non-contact area 105 does not cool down and is maintained at a high temperature. Therefore, when the hole seal material 101 molded by the core back is naturally cooled, as shown by the two-dot chain line in FIG. It transforms like this.

With the hole seal material 101 that has been greatly thermally deformed in this way, it is difficult to secure the sealing performance by elastically pressing the tip portion 104 of the outer peripheral lip portion 103 against the outer peripheral portion 203 of the inner panel 201 . A hole seal material that can minimize deformation of the outer peripheral lip portion due to shrinkage is desired. Also, for example, when forming a non-foamed resin part such as a mounting point of a hole seal material in a region surrounded by a donut shape with a foamed resin part, the same non-contact area as described above may occur due to heat shrinkage. Since deformation to a shape that does not occur occurs, it is also desired to prevent such deformation.

The present invention is proposed in view of the above problems, and a hole sealing material that can suppress as much as possible the occurrence of unintended shape deformation due to heat shrinkage at the boundary between the unfoamed resin and the foamed resin, and its manufacture. The purpose is to provide a method.

A hole sealing material for an automobile door according to the present invention includes a foamed resin portion and an unfoamed resin portion formed from the same molding material, and a vertical wall portion provided at a boundary between the foamed resin portion and the unfoamed resin portion. An unfoamed standing wall portion made of unfoamed resin is formed at a position nearer to the unfoamed resin portion side of the portion.
According to this, the upright walls block the area that is out of contact with the mold during core-back and becomes hotter than the contact area, thereby greatly reducing the influence of thermal contraction. Therefore, it is possible to suppress the occurrence of unintended shape deformation due to heat shrinkage at the boundary between the unfoamed resin and the foamed resin as much as possible, and it is possible to reliably obtain a hole sealing material for automobile doors having an intended shape. can.

A hole seal material for an automobile door according to the present invention includes a foamed main body portion made of foamed resin and an outer peripheral lip portion made of unfoamed resin, both of which are formed from the same molding material. A hole sealing material for an automobile door, which is elastically biased and fixed so as to abut on the outer periphery of an opening of a panel, wherein the standing wall portion is formed on the outer side of the core-back mark groove of the foam body portion. An unfoamed standing wall portion made of unfoamed resin is formed on the outer side of the standing wall portion, and the outer peripheral lip portion is formed so as to protrude outward from the unfoamed standing wall portion. and
According to this, the raised wall portion having the non-foamed raised wall portion on the outer side is provided around the outer side of the core-back trace groove of the foamed main body portion, so that the contact area does not come into contact with the mold during core-backing. A region having a higher temperature can be kept inside the standing wall portion, and the effect of heat shrinkage on the outer peripheral lip portion can be cut off by the standing wall portion and greatly reduced. Therefore, deformation of the outer peripheral lip portion due to heat shrinkage can be suppressed as much as possible, in other words, unintended shape deformation due to heat shrinkage can be suppressed as much as possible at the boundary between the unfoamed resin and the foamed resin. , the hole sealing material can surely press the outer peripheral lip portion against the inner panel with elastic bias. In addition, the upright wall prevents the area of the foamed resin formed by the core back from extending to the vicinity of the root of the outer peripheral lip, thereby preventing the strength from being lowered due to the foamed resin being formed in the outer peripheral lip. can be prevented. In addition, in the door hole seal structure composed of this hole seal material, the tip of the outer peripheral lip portion of the hole seal material is elastically pressed against the outer periphery of the opening of the inner panel, and surface pressure is constantly applied without any gap. In this state, the tip of the outer peripheral lip portion is pressed against the outer peripheral portion of the inner panel with a pressure exceeding the excitation force of the vibration from the outside to suppress the vibration, resulting in abnormal noise (chattering noise) or noise caused by the external force. It is possible to prevent the occurrence of tatsuki. Furthermore, the synthetic resin film adhered around the opening of the inner panel does not vibrate and generate abnormal noise, and the generation of abnormal noise due to the hole seal material can be prevented. Further, in this door hole seal structure, the tip of the outer peripheral lip portion is elastically pressed against the outer peripheral portion of the opening of the inner panel to maintain the abutting state, so that the outer peripheral portion of the hole seal material and the inner panel are separated from each other. It is possible to ensure sealing performance and waterproofness with the outer peripheral portion of the opening of the.

In the hole sealing material for an automobile door of the present invention, the outer peripheral lip portion is formed with an upright wall extending in the thickness direction of the foamed main body and inclined outward from the upright wall toward the inner panel. It is characterized by comprising a lip edge and a bridging portion made of unfoamed resin that connects the unfoamed standing wall portion and the standing wall so as to form a substantially H-shaped cross section.
According to this, the strength of the outer peripheral portion of the hole seal material including the outer peripheral lip portion can be increased by the substantially H-shaped cross section composed of the unfoamed standing wall portion, the standing wall, and the bridging portion, which are made of unfoamed resin. can. Furthermore, the substantially H-shaped cross section enhances the elasticity of the outer peripheral lip portion, and further enhances the elastic force and surface pressure with which the tip of the outer peripheral lip portion is elastically pressed against the outer peripheral portion of the opening of the inner panel. be able to. Therefore, in the door hole seal structure composed of the present hole seal material, it is possible to more reliably obtain the effects of preventing the occurrence of abnormal noise and ensuring sealing performance and waterproofness.

A method for manufacturing a hole sealing material for an automobile door according to the present invention is a method for manufacturing the hole sealing material for an automobile door according to the present invention, wherein the outer peripheral lip portion, the vertical wall portion, and the vertical wall portion surround a A cavity having a shape corresponding to a substrate having a thickness smaller than the height of the vertical wall is divided into a fixed mold and a movable mold, and the movable mold is formed in the cavity having the shape of the vertical wall. A first step of arranging the fixed mold on the surface of the mold on the retreating side and arranging the side surface of the movable mold on the inner surface of the cavity having the shape of the standing wall, and filling the cavity with foamable molten resin. and a third step of forming the hole seal material by foaming the foamable molten resin by core-backing the movable mold.
According to this, when the foamable molten resin is foamed by core-backing the movable mold, the part to be foamed corresponding to the movable mold contacts and integrates with the resin that will be the standing wall portion located outside. It is formed while being done. Therefore, the area corresponding to the core-back trace groove formed on the surface of the hole seal material on the side of the movable mold retreating, which is not in contact with the mold and becomes high temperature, can be made very small. effect on the outer peripheral lip portion can be greatly reduced. In addition, since the high-temperature non-contact region corresponding to the core-back trace groove is formed adjacent to the vertical wall portion that contacts the mold except for the inner side, cooling of the non-contact region is promoted during core-back. Also from this point, the influence of heat shrinkage on the outer peripheral lip portion can be greatly reduced.

ADVANTAGE OF THE INVENTION According to this invention, the hole-sealing material which can suppress as much as possible the occurrence of unintended shape deformation due to heat shrinkage at the boundary between the unfoamed resin and the foamed resin can be obtained.

1 is a front view of an automobile door having a door hole seal structure using the hole seal material of an embodiment of the present invention; FIG. BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing of the door hole seal structure using the hole seal material of embodiment by this invention. (a) is an enlarged view of the A portion of FIG. 2, and (b) is an enlarged view of the B portion of FIG. (a) to (c) are process explanatory diagrams for explaining the manufacturing process of the hole seal material of the embodiment. (a) to (c) are partial enlarged views respectively corresponding to (a) to (c) of FIG. FIG. 5 is a cross-sectional explanatory view showing a state in which the outer peripheral lip portion of the hole seal material of the comparative example is pressed against the inner panel. (a) is a cross-sectional explanatory view for explaining the manufacturing process of the hole seal material of the comparative example, and (b) is a cross-sectional explanatory view for explaining thermal deformation of the outer peripheral lip portion of the hole seal material of the comparative example.

[Hole sealing material for automobile door of embodiment]
A hole seal material 5 for an automobile door according to an embodiment of the present invention is provided on an inner panel 4 arranged between an outer panel 2 and a door trim 3 in an automobile door 1, as shown in FIGS. Used for door hole seal structure. The hole seal material 5 is made of the same molding material as the foamed body portion 6 made of foamed resin and the outer peripheral lip portion 7 made of unfoamed resin.

The foam body portion 6 of the hole seal material 5 is composed of a foam core layer 61 and a skin layer 62 formed outside the foam core layer 61 . A standing wall portion 63 is formed on the outer periphery of the foamed main body portion 6, and an unfoamed standing wall portion 631 made of unfoamed resin is formed on the outer side of the standing wall portion 63. As shown in FIG. The standing wall portion 63 is provided around the outer side of the core-back mark groove 64 of the peripheral groove provided in the foam body portion 6 .

The outer peripheral lip portion 7 is formed so as to protrude outward from the non-foamed standing wall portion 631 , and includes an upright wall 71 extending in the thickness direction of the foamed main body portion 6 and an outer peripheral lip portion 7 extending outward from the upright wall 71 toward the inner panel 4 side. It is composed of an inclined lip edge 72 and a bridging portion 73 made of unfoamed resin that connects the unfoamed standing wall portion 631 and the standing wall 71 so as to form a substantially H-shaped cross section. The lip edge 72 in the illustrated example is formed so as to curve and incline in a substantially arc shape from the end of the standing wall 71 , and the tip portion 721 is disposed at a position that serves as the peripheral edge of the hole seal material 5 . It is shaped like an edge. In addition, the bridging portion 73 in the illustrated example is formed at a position closer to the inner panel 4 than the center of the unfoamed standing wall portion 631 in the thickness direction of the foamed body portion 6 , so that the unfoamed standing wall portion 631 and the standing wall 71 are formed. is erected on

On the inner panel 4 side surface of the foamed main body 6 in this embodiment, a hook engaging hole 65 configured by a portion protruding in a substantially U shape and a hook formed with a hook facing outward are provided. Stop hooks 66 are provided at a plurality of predetermined locations, respectively, and are integrally formed as part of the skin layer 62 of the foam body portion 6 . A separate fastener 8 is inserted into and engaged with the fastener engaging hole 65 .

The hole seal material 5 is arranged so as to close the opening 41 of the inner panel 4 , and the foam main body 6 is mechanically fixed to the inner panel 4 . In this embodiment, the hanging hook 66 is hooked inside the peripheral edge 42 of the opening 41 of the inner panel 4 , and the tip hook 81 of the fastener 8 engaged with the fastener engaging hole 65 is attached to the inner panel 4 . It is hooked on the inner side of the peripheral edge 42 of the opening 41 and fixed (see FIGS. 2 and 3). That is, the foam main body 6 is hooked and fixed to the peripheral edge 42 of the opening 41 of the inner panel 4 so that a force is applied to draw the foam main body 6 toward the opening 41 of the inner panel 4 .

The tip portion 721 of the outer peripheral lip portion 7 of the hole seal material 5 mechanically fixed to the inner panel 4 by hook fixing is elastically pressed against the outer peripheral portion 43 of the opening 41 of the inner panel 4, and is brought into contact. contact is maintained. In the illustrated example, a bead-shaped outer peripheral portion 43 of an opening 41 of the inner panel 4 is formed so as to be curved in a substantially arc-like shape outwardly toward the passenger compartment from a peripheral edge 42 extending in a substantially vertical direction. The tip portion 721 is elastically biased to maintain the contact state.

When manufacturing the hole seal material 5 used in the door hole seal structure of the present embodiment, for example, as shown in FIGS. Fixed molds 91 and 92 and a movable mold 93 partition and form a cavity 90 which is surrounded by the portion 63 and has a shape corresponding to a substrate thinner than the height of the standing wall portion 63 . At the time of molding the foamable molten resin, the movable mold 93 is retracted in the direction of the thick two-dot chain line arrow in FIG. A fixed mold 92 is arranged on the surface 901 of the cavity, and a side surface of a movable mold 93 is arranged on an inner side surface 903 of the cavity having the shape of the standing wall portion 63 .

Next, as shown in FIGS. 4(b) and 5(b), the foamable molten resin MR is injected into the cavity 90 through an injection path for the foamable molten resin (not shown) to fill the cavity. An appropriate material applicable to the hole seal material 5 of the automobile door 1 can be used for this foamable molten resin.
For example, olefin resins such as PP (polypropylene) and PE (polyethylene), amorphous resins such as ABS (acrylonitrile-butadiene-styrene copolymer) and mixed resins of PC (polycarbonate) and ABS, thermoplastics such as olefins Elastomers or synthetic rubbers such as EPDM (ethylene propylene diene rubber), SBR (styrene butadiene rubber), CR (chloroprene rubber) and NBR (nitrile rubber) are preferably used. In this embodiment, the fixed mold 91 is provided with a gap 911 corresponding to the shape of the substantially U-shaped portion forming the hook engaging hole 65 and a gap 912 corresponding to the shape of the hook 66. The gaps 911 and 912 are also filled with the foamable molten resin MR. At a portion corresponding to the hook engaging hole 65, a metal rod is installed which can move forward and backward within the fixed mold 91 or can be externally attached to and detached from the fixed mold 91, and the foamable molten resin MR is injected and filled. It is sometimes closed with a metal bar so that a shape corresponding to the fastener engaging hole 65 is formed.

Thereafter, as shown in FIGS. 4(c) and 5(c), the movable mold 93 is core-backed in the direction of the thick arrow shown in the drawing to foam the foamable molten resin MR, thereby forming the foamed body portion 6 and the peripheral lip. A hole seal material 5 composed of portions 7 is formed. At this time, in the present embodiment, the formed hole seal material 5 is also formed with a substantially U-shaped portion constituting the fastener engaging hole 65 and the retaining hook 66 . In the hole seal material 5 thus formed, a core-back groove 64 is formed on the surface of the foaming main body 6 on the side of the movable mold 93 at a position corresponding to the side surface of the movable mold 93. A vertical wall portion 63 having an unfoamed vertical wall portion 631 and an outer peripheral lip portion 7 are formed.

According to the hole seal material 5 of the automobile door 1 of the present embodiment, the standing wall portion 63 having the unfoamed standing wall portion 631 on the outer side is provided around the outer side of the core-back trace groove 64 of the foamed main body portion 6. During core backing, the area that is out of contact with the mold and becomes hotter than the contact area can be kept inside the vertical wall portion 63, and the effect of thermal contraction on the outer peripheral lip portion 7 is blocked by the vertical wall portion 63. can be significantly reduced by Therefore, deformation of the outer peripheral lip portion 7 due to heat shrinkage can be suppressed as much as possible, and the outer peripheral lip portion 7 can be reliably pressed against the inner panel 4 by elastic biasing. In addition, the upright wall portion 63 prevents the area of the foamed resin formed by the core back from extending to the vicinity of the root of the outer peripheral lip portion 7, and the foamed resin portion is formed in the outer peripheral lip portion 7, resulting in a decrease in strength. can be prevented.

Further, in the door hole seal structure composed of the hole seal material 5, the tip portion 721 of the outer peripheral lip portion 7 of the hole seal material 5 is elastically biased against the outer peripheral portion 43 of the opening 41 of the inner panel 4, and the gap is closed. The tip portion 721 of the outer peripheral lip portion 7 is pressed against the outer peripheral portion 43 of the inner panel 4 with a pressure exceeding the excitation force of the vibration from the outside, suppressing the vibration and suppressing the external force. It is possible to prevent the occurrence of abnormal noise (chattering noise) or backlash. Furthermore, the synthetic resin film adhered around the opening 41 of the inner panel 4 does not vibrate and generate abnormal noise, and the generation of abnormal noise caused by the hole seal material 5 can also be prevented. Further, in this door hole seal structure, the front end portion 721 of the outer peripheral lip portion 7 is elastically biased against the outer peripheral portion 43 of the opening 41 of the inner panel 4 to maintain the abutment state. and the outer peripheral portion 43 of the opening 41 of the inner panel 4 can be sealed and waterproofed.

In addition, the strength of the outer peripheral portion of the outer peripheral lip portion 7 or the hole seal member 5 is increased by the substantially H-shaped cross section composed of the unfoamed standing wall portion 631, the standing wall 71, and the bridging portion 73, which are made of unfoamed resin. can be done. Furthermore, the substantially H shape in cross section enhances the elasticity of the outer peripheral lip portion 7, and the elastic force of the tip portion 721 of the outer peripheral lip portion 7 being elastically pressed against the outer peripheral portion 43 of the opening 41 of the inner panel 4. , the surface pressure can be further increased. Therefore, in the door hole seal structure composed of the hole seal material 5, it is possible to more reliably obtain the effects of preventing the occurrence of abnormal noise and ensuring sealing performance and waterproofness.

Further, according to the method for manufacturing the hole sealing material 5 of the above-described embodiment, when the movable mold 93 is core-backed to foam the foamable molten resin MR, the part to be foamed corresponding to the movable mold 93 is , are formed while contacting and being integrated with the resin forming the standing wall portion 63 located on the outside. Therefore, the area corresponding to the core-back trace groove 64 formed on the surface of the hole seal material 5 on the side on which the movable mold 93 retreats, which does not come into contact with the mold and becomes high temperature, can be made very small. , the influence of heat shrinkage on the outer peripheral lip portion 7 can be greatly reduced. In addition, since the high-temperature non-contact region corresponding to the core-back trace groove 64 is formed adjacent to the vertical wall portion 63 that contacts the mold except for the inner side, cooling of the non-contact region is promoted during core-back. From this point of view as well, the influence of heat shrinkage on the outer peripheral lip portion 7 can be greatly reduced.

[Scope of invention disclosed in this specification]
In addition to each invention and embodiment listed as an invention, the invention disclosed in this specification is specified by changing these partial contents to other contents disclosed in this specification within the applicable range, Alternatively, what is specified by adding other contents disclosed in this specification to these contents, or what is specified by deleting these partial contents to the extent that partial effects can be obtained and making them a broader concept contain. The invention disclosed in this specification also includes the following modifications and additional contents.

For example, in the door hole seal structure using the hole seal material 5 of the above-described embodiment, the foam main body 6 is hooked and fixed to the inner panel 4, but the door hole seal structure is constructed using the hole seal material 5 of the present invention. For fixing the hole seal material 5 at that time, it is possible to use an appropriate fixing structure within the scope of the present invention. In particular, fixing by a mechanical action such as hook fixing, bolting, screwing, crimping, press-fitting, etc., in other words, mechanical fixing is preferably used. It is also possible to provide a partial protrusion on the inner panel side of the part and chemically fix the protrusion to the peripheral edge of the opening of the inner panel by gluing or the like.

In the above-described embodiment, the distal end portion 721 of the outer peripheral lip portion 7 is formed in a bead shape from the viewpoint of improving strength, preventing breakage, and increasing the contact area due to contact with the inner panel 4. Also included in the present invention is the shape of the tip portion of is other than the shape of a bead. In addition, the shape of the outer peripheral lip portion protruding outward from the unfoamed standing wall portion in the present invention is also appropriate within the scope of the present invention, and is not limited to the substantially H shape in cross-sectional view of the above embodiment.

In the above-described embodiment, the foamed main body made of foamed resin is used as the foamed resin portion, and the outer peripheral lip portion made of unfoamed resin is used as the unfoamed resin portion. The hole seal material is provided with an upright wall portion at the boundary between the foamed resin portion and the unfoamed resin portion, and the unfoamed upright wall portion made of unfoamed resin is formed at a position closer to the unfoamed resin portion side of the upright wall portion. and suitable automotive door hole seals. For example, when forming an unfoamed resin portion such as a mounting location for a hole seal material in a region surrounded by a donut shape with a foamed resin portion, a standing wall portion is provided on the boundary between the foamed resin portion and the unfoamed resin portion, The hole sealing material for an automobile door having a structure in which an unfoamed standing wall portion made of unfoamed resin is provided at a position closer to the unfoamed resin portion side such as a mounting portion of the hole sealing material on the standing wall portion may be used. According to such a hole sealing material for an automobile door of the present invention, it is possible to minimize the occurrence of unintended shape deformation due to heat shrinkage at the boundary between the unfoamed resin and the foamed resin.

INDUSTRIAL APPLICABILITY The present invention can be used as a hole sealing material for closing an opening of an inner panel of an automobile door.

DESCRIPTION OF SYMBOLS 1... Automotive door 2... Outer panel 3... Door trim 4... Inner panel 41... Opening part 42... Peripheral edge 43... Outer peripheral part 5... Hole sealing material 6... Foaming main body part 61... Foaming core layer 62... Skin layer 63... Standing wall part 631 Unfoamed standing wall portion 64 Core back trace groove 65 Hook engaging hole 66 Hanging hook 7 Peripheral lip portion 71 Standing wall 72 Lip edge 721 Tip portion 73 Bridging portion 8 Hook Tools 81 Tip hook 90 Cavity 901 Side on which movable mold retreats 902 Inner surface 91 Fixed mold 911, 912 Gap 92 Fixed mold 93 Movable mold MR Expandable molten resin 101 ... Hole sealing material 102 ... Foam main body 103 ... Peripheral lip part 104 ... Tip part 105 ... Non-contact area 201 ... Inner panel 202 ... Opening 203 ... Peripheral part 301, 302 ... Fixed mold 303 ... Movable mold

Claims (4)

The same molding material for the foamed resin part and the unfoamed resin part,
A standing wall portion is provided on a boundary between the foamed resin portion and the unfoamed resin portion,
A hole sealing material for an automobile door, wherein an unfoamed standing wall portion made of unfoamed resin is formed at a position of the standing wall portion nearer to the unfoamed resin portion side. The foamed main body portion made of foamed resin and the outer peripheral lip portion made of unfoamed resin are made of the same molded material, and the tip of the outer peripheral lip portion is elastically biased against the outer peripheral portion of the opening of the inner panel. A hole sealing material for an automobile door that is fixed so as to be pressed and abutted,
A standing wall portion is provided around the outer side of the core back trace groove of the foamed main body portion,
An unfoamed standing wall portion made of unfoamed resin is formed on the outer side of the standing wall portion,
A hole sealing material for an automobile door, wherein the outer peripheral lip portion is formed so as to protrude outward from the non-foamed standing wall portion. The outer peripheral lip portion includes an upright wall extending in the thickness direction of the foamed main body portion, a lip edge formed so as to be inclined outward from the upright wall toward the inner panel, the non-foamed upright wall portion, and the upright wall portion. 3. The hole sealing material for an automobile door according to claim 2, further comprising a bridging portion made of unfoamed resin connecting the wall with the wall so as to form a substantially H shape in cross section. A method for manufacturing the automotive door hole sealing material according to any one of claims 2 and 3,
A fixed mold and a movable mold are used to form a cavity surrounded by the outer peripheral lip portion, the vertical wall portion, and a cavity having a shape corresponding to a substrate whose thickness is thinner than the height of the vertical wall portion and which is surrounded by the vertical wall portion. The fixed mold is arranged on the surface of the cavity in the shape of the vertical wall on the side on which the movable mold retreats, and the side surface of the movable mold is placed on the inner surface of the cavity in the shape of the vertical wall. a first step of arranging
a second step of filling the cavity with a foamable molten resin;
A method of manufacturing a hole sealing material for an automobile door, comprising: a third step of core-backing the movable mold to foam the foamable molten resin to form the hole sealing material.

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