JP6101118B2 - Manufacturing method for door-to-door members - Google Patents

Description

The present invention relates to a method of manufacturing a doorstop member, more particularly, to a method for producing a doorstop member capable reproducibly produce doorstop member having a predetermined shape by using a rubber composition containing a rubber component of low hardness Related.

  For example, a door-holding member is attached to the door-stop part of a mounting frame such as a sliding door that forms an opening of a building in order to reduce noise, reduce impact, and ensure airtightness. .

  As such a door stop member, a member provided with a buffer material, a member formed of rubber or resin, etc., and having a buffer property itself can be cited. For example, as a resin door stop member, Patent Document 1 describes a door stop packing which is an extruded product of resin. Such a door stop member usually has a door stop portion erected in a bent shape. This door stop portion further bends and bends when a sliding door or the like comes into contact, and exerts an intended function by being sandwiched between the mounting frame and the sliding door. As described above, since the door stop portion is erected in a bent shape, it is important to adjust the degree of bending of the door stop portion at the time of molding in order for the door stop member to stably exhibit the intended function. is there.

JP 2011-47230 A

  Such door contact members are formed by various forming methods, but are often formed by extrusion molding in that a long product can be formed by integral molding. However, when the door stop member is manufactured by the extrusion molding method, the degree of bending of the door stop portion varies, and the door stop member may not be manufactured with good reproducibility. However, since the door-stop member is conventionally made of a high-hardness rubber such as ethylene-propylene-diene rubber (EPDM) or polyvinyl chloride, the degree of flexion of the door stop portion greatly deviates from the desired range. It was rare.

  However, in recent years, for the purpose of securing higher airtightness and further reducing impact, for example, a door-to-door member is manufactured with a rubber composition containing a low hardness rubber component having a JIS A hardness of about 50 to 80, for example. It has become. When a door contact member is produced with such a rubber composition, the door contact portion bends or tilts more than necessary after extrusion molding and before vulcanization or curing of the rubber component, and the degree of bending greatly varies. A new problem arises that a door-stop member that exhibits the above function cannot be manufactured with good reproducibility.

  Therefore, the present invention solves a new problem even when using a rubber composition containing a rubber component having a low hardness, and a method for manufacturing a door stop member capable of manufacturing a door stop member of a predetermined shape with good reproducibility, and this An object is to provide a door-to-door member manufactured by a manufacturing method.

The object of the present invention has been achieved by the following means.
(1) A method of manufacturing a door stop member having a door stop portion that is self-supporting in a bent shape from a long main body,
A rubber composition containing a silicone rubber component having a JIS A hardness of 50 to 80 is extended from the main body, the door stop portion, and the main body toward the door stop portion to support the door stop portion. A method for manufacturing a door-to-door member, comprising: a step of extruding a long shaped body having a supporting portion to be heated; a step of heating the long shaped shaped body; and a step of removing the supporting portion .
(2) The manufacturing method of the door contact member as described in (1) in which the said support part is extended so that it may connect or leave a space | interval with a door stop part.
(3) The manufacturing method of the door stop member as described in (1) or (2) in which the said support part has the groove-shaped notch in alignment with the extension direction of the said elongate molded object in the said main body side .
(4) The door-contacting member is erected from the one end edge side of the main body along the extending direction of the main body toward the outside, and is provided continuously with the erected portion. The manufacturing method of the door stop member of any one of (1)-(3) which has a bending part bent in the direction opposite to the standing direction of a part, and the front-end | tip part connected with the said bending part .
(5) The support portion according to any one of (1) to (4), wherein the support portion is erected along the extending direction of the main body and formed on an opposing wall facing the door stop portion. A method for manufacturing door-to-door members .
(6) The method for manufacturing a door-contact member according to any one of (1) to (5), wherein the heating step is performed using a horizontal heating furnace .

  In the present invention, a rubber composition containing a low-hardness rubber component is extruded from a main body into a long molded body having a support portion that extends from the main body toward the door stop and supports the door stop. Or since it is heat-cured, even if the rubber composition contains a low-hardness rubber component, deformation of the door-to-door portion, particularly bending more than necessary, can be suppressed before heat-curing or heat-curing. Therefore, according to the present invention, even when a rubber composition containing a low-hardness rubber component is used, a door-shaped member having a predetermined shape can be manufactured with good reproducibility.

FIG. 1 is a front view in the longitudinal direction showing a door stop member which is an example of a door stop member according to the present invention. FIG. 2 is a front view in the longitudinal direction showing a door stop member which is another example of the door stop member according to the present invention. FIG. 3 is a front view in the longitudinal direction showing a long shaped product that has been extrusion-molded in a specific method for producing a door-to-door member. FIG. 4 is a diagram showing a die suitably used in a specific method for manufacturing a door-to-door member. FIG. 5 is a front view in the longitudinal direction showing the long molded cured body in which the door stop portion is bent and is supported in contact with the support portion.

  The door contact member according to the present invention is usually formed into a long shape, and is press-fitted along the attachment groove into the attachment groove of the attachment frame, and exhibits its function. The door contact member according to the present invention is suitably used to reduce noise, reduce impact, and ensure airtightness in an opening of a building having a sliding door or the like, and particularly requires weather resistance and the like. It is suitably used for the opening. As what is provided in the opening part of a building, a sliding door, a glass window, a sash, a door etc. are mentioned, for example.

  The door contact member according to the present invention is a door contact member having a door contact portion having a JIS A hardness of 50 to 80, which is self-supporting in a bent shape from the main body, and the door contact portion and / or the overall shape is a known door. It may be the same as or different from the contact member. That is, the door stop member according to the present invention can adopt an appropriate shape as long as it has a door stop portion that is self-supporting in a bent shape from the main body. The dimension of the door stop member is appropriately set according to the opening or the like to be attached.

  An example of a door contact member according to the present invention and a manufacturing method thereof will be described with reference to the drawings. However, the door contact member according to the present invention is not limited to the following example and the manufacturing method thereof.

  As shown in FIG. 1, a door-stop member 1 that is an example of a door-stop member according to the present invention has an elongated main body 10 and one end on one main surface of the main body 10 along the extending direction of the main body 10. It has a door end portion 20 formed in a bent shape that is erected on the edge side and has a distal end positioned on the other end edge side of the main body 10 with respect to the one end edge side.

  The main body 10 has a plate-like main body 11 extending in the longitudinal direction of the door-contacting member and the width direction perpendicular to the longitudinal direction, and a mounting portion 12 integrally formed on the other main surface of the plate-like main body 11. For example, it is formed in a long shape of 5 cm or more. The mounting portion 12 has an inverted T shape, and is fitted into a mounting groove formed in the mounting frame.

The door stop 20 is erected as a long wall along the extending direction of the main body 10. The door contact portion 20 includes a standing portion 21 that is erected outward from one edge side of the width direction center of one main surface of the main body 10, and a bent portion 22 that is continuous with the standing portion 21. The front end portion 23 is connected to the bent portion 22, and the front end portion is located on the other end edge side with respect to the rising position of the upright portion 21. Thus, as shown in FIG. 1, the door stop 20 has a bent cross-sectional shape as a whole perpendicular to the longitudinal direction. Here, the size and shape of the door stop 20 are not particularly limited, and are appropriately set according to the opening to be attached. For example, the bending angle of the bending portion 22, the standing length (height) and thickness of the standing portion 21, and the thickness of the distal end portion 23 are appropriately set. In the door stop member 1, the bending angle of the bent portion 22 is 120 to 140 °, the thickness of the standing portion 21 and the tip portion 23 is 1 to 3 mm, and the entire standing length of the door stopper portion 20 is 5 to 20 mm. .
In the door stop member 1, the distal end portion 23 is adjusted such that the distal end is located on the other end edge side with respect to the rising position of the standing portion 21. In this invention, the door stop member may have a bent shape that extends outward from one edge and in the opposite direction at the bent portion, and the tip of the door stop portion is on the same straight line as the rising position of the standing portion 21. Alternatively, it may be located on one edge side of the rising position of the standing portion 21.

  As shown in FIG. 2, the door stop member 2, which is another example of the door stop member according to the present invention, has a door stop except that the main body 10 has an opposing wall 25 facing the door stop portion 20. Basically the same as the member 1. The facing wall 25 is formed in a long shape along the extending direction of the main body 10 so as to face the door stop 20 on the other end edge side of the width direction center of one main surface of the main body 10. The opposing wall 25 is erected outward from the other end edge side rather than the center in the width direction of one main surface of the main body 10. Therefore, the standing portion 21 of the door stop 20 and the facing wall 25 are erected so as to be gradually separated toward the tip. In addition, this opposing wall 25 is formed for the purpose of airtightness, and can also become a formation part of a support part in the manufacturing method of the door contact member which concerns on this invention so that it may mention later.

These door contact members 1 and 2 are integrally formed of a rubber composition containing an unvulcanized or uncured rubber component having a JIS A hardness of 50 to 80 after vulcanization or curing, and the whole is 50 It has a JIS A hardness of ˜80. JIS A hardness is a value measured according to the method described in JIS K6253 (1997). The JIS A hardness after vulcanization or curing of the unvulcanized or uncured rubber component is preferably 60 to 80 in that the followability is improved when the sliding door is fitted to the doorside member.
And since these door stop members 1 and 2 are manufactured by the manufacturing method of the door stop member according to the present invention, a rubber composition containing a rubber component having a low hardness of JIS A hardness of 50 to 80 is used. Even so, the door stop 20 has a predetermined shape. Specifically, the bent portion 22 of the door stop 20 is bent at a predetermined bending angle, for example, 120 to 140 °, and the distal end portion 23 does not excessively bend or tilt toward the main body 10 side. The tip is arranged at a desired position.

  Further, when the door contact members 1 and 2 are made of such a rubber composition, the door contact members 1 and 2 can be attached to a mounted body such as a mounting frame with good followability as compared with a conventional door contact member, and the air tightness is higher. In addition, it is possible to further reduce the impact, and in addition, when manufactured with a fire-resistant and flame-retardant rubber composition, it can satisfy the properties required for recent door-to-door members such as fire resistance. In particular, when the door stop member 1 is made of a composition containing silicone rubber, in addition to these, the required properties of durability and weather resistance can be satisfied, and it is suitably used for a wide range of applications. Highly useful.

The rubber composition containing a rubber component having a JIS A hardness of 50 to 80 may be a rubber composition containing a rubber component having a JIS A hardness in the above range. For example, as a rubber component, a urethane rubber component , Silicone rubber components, chloroprene rubber components and the like. Among these, a rubber composition containing a silicone rubber component is preferable because it is excellent in durability, weather resistance, and the like. As such a rubber composition containing a silicone rubber component, a rubber composition containing a known silicone rubber component having a JIS A hardness within the above range can be used without any particular limitation. This rubber composition preferably has a JIS A hardness of 50 to 80, like the rubber component.
Examples of the silicone rubber component include organopolysiloxanes represented by an average unit formula: RaSiO _{(4-a) / 2} . In the average unit formula, a is an average number of 1.9 to 2.1, R is an alkyl group, a cycloalkyl group, an aryl group, an alkenyl group, or a part or all of hydrogen atoms bonded to carbon atoms of these groups. It is a group substituted with an organic group including a halogen atom, an amino group, a cyano group, an epoxy group, a carboxyl group and the like, and is an unsubstituted or substituted monovalent hydrocarbon group which is the same or different from each other. As an alkyl group, a C1-C10 alkyl group is mentioned, Specifically, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group etc. are mentioned. Examples of the cycloalkyl group include cycloalkyl groups having 4 to 10 carbon atoms, and specific examples include a cyclohexyl group. Examples of the aryl group include a phenyl group and a tolyl group, and examples of the alkenyl group include a vinyl group and an allyl group. R is preferably 80 mol% or more of a methyl group and 0.1 to 0.5 mol% of a vinyl group. The organopolysiloxane preferably has a viscosity at 25 ° C. of 1,000 cSt or more, and more preferably 10,000 cSt or more. The end of the organopolysiloxane is preferably blocked with a silanol group, a methyl group, a vinyl group, or the like, particularly preferably blocked with a vinyl group.

  Examples of such a rubber composition containing a silicone rubber component include trade name: KE-5620WU (manufactured by Shin-Etsu Chemical Co., Ltd.), trade name: KE-5609U (manufactured by Shin-Etsu Chemical Co., Ltd.), and the like. It is done.

  A rubber composition containing a rubber component having a JIS A hardness of 50 to 80, in addition to a rubber component having a JIS A hardness of 50 to 80, a vulcanizing agent, a vulcanization accelerator, a curing agent, a curing accelerator, You may contain various additives, such as a filler, a flame retardant, a pigment, and antioxidant. These various additives can be employed without particular limitation.

  For example, as a fire-resistant flame retardant rubber composition containing a flame retardant and the like, a fire-resistant flame retardant silicone rubber composition described in Japanese Patent No. 3485387 is preferably exemplified.

  The door contact member manufacturing method according to the present invention is a method for manufacturing a door stop member having a door stop portion that is self-supporting in a bent shape from a main body, and contains a rubber component having a JIS A hardness of 50 to 80. A step of extruding the composition into a long shaped body having a main body, a door stop portion, and a support portion extending from the main body toward the door stop portion and supporting the door stop portion; Heating. The die used for the process of extruding the rubber composition includes a support portion that extends from the main body toward the door stop portion and supports the door stop portion in addition to the main body and the door stop portion of the door stop member according to the present invention. Has a cavity that can be integrally molded.

  Hereinafter, the specific manufacturing method which manufactures the door stop member 1 is demonstrated.

  In the specific manufacturing method of the door stop member 1, the rubber composition is made of the main body 10, the door stop portion 20, and the support portion 41 that extends from the main body 10 toward the door stop portion 20 and supports the door stop portion. The process of extruding to the elongated shaped body 40 having the above is performed. As shown in FIG. 3, the extruding step erects the main body 10 along the extending direction of the main body 10 on one end edge side of the main surface of the main body 10. 10 is formed in a bent shape with a distal end positioned on the other end edge side, and the other end side of one main surface of the main body 10 is erected from the other end side toward the door contact portion 20 and extends to the vicinity of the distal end portion 23. The long molded body 40 having the existing support part 41 is integrally extruded. The support part 41 of the elongated molded body 40 is formed so as to be close to and opposed to the door stop part 20 with a space. That is, the support part 41 extends to the position where the front end is near the front end part 23 of the door stop part 20, for example, 0.5 to 5 mm apart in consideration of a predetermined bending angle of the door stop part 20. Thus, when the support part 41 is shape | molded, it is excellent in the ease of peeling of the support part 41 after vulcanization or hardening, the adjustment ease of the cavity 31 of the die | dye 30, etc. If the purpose is to strictly control the bending angle of the door stop 20 rather than the ease of peeling of the support 41 and the adjustment of the cavity 31, the support 41 is attached to the door stop 20. Can be shaped to connect.

  Therefore, a suitable die 30 used in this extruding step has a cavity 31 in which the main body 10, the door stop 20 and the support 41 can be formed, as shown in FIG.

  In this specific manufacturing method, the rubber composition is extruded into the die 30 using an extruder. As long as the rubber composition can be extruded to the die 30, the structure used, for example, the number of screws, the direction of extrusion (straight or cross), etc. is not particularly limited, and a known extruder is used. be able to. Therefore, the extruder may be a vertical extruder or a horizontal extruder.

  The rubber composition is not particularly limited as long as the rubber composition contains a rubber component having a JIS A hardness of 50 to 80. As described above, the rubber composition containing a silicone rubber component or a door contact member When fire resistance and flame resistance are required for 1, it is preferable to use a fire resistance and flame retardant silicone rubber composition.

  In this extruding step, appropriate conditions capable of extruding the rubber composition can be adopted according to the rubber composition to be used, and the extruding conditions and method are not particularly limited.

  In this manner, in the extruding step, the long shaped body 40 having the main body 10, the door stop 20 and the support 41 is formed. Then, as shown in FIG. 3, the molded long molded body 40 maintains the bent state immediately after molding without the support portion 41 being in contact with the door stop portion 20. As shown in FIG. 5, the support portion 41 may be in contact with the door stop portion 20.

  In the extruding step, as shown in FIG. 3, if a groove-shaped cut is provided in the vicinity of the main body 10 of the support portion 41 along the extending direction of the long shaped body 40, the support portion 41 is removed in a step described later. Can be easily removed. Such a cut can be formed by providing a protrusion in the cavity 31 forming the support portion 41 as shown in FIG.

  In this specific manufacturing method, the step of heating the long shaped body 40 thus molded using a heating means such as a horizontal heating furnace or a vertical heating furnace is performed.

  However, after the step of extruding, until the rubber composition is heat vulcanized or heat cured, the door stop 20 is bent by gravity or its own weight, or by heating in the step of heating, with the bent portion 22 as the center, Or the front-end | tip part 23 may be bent and the door stop part 20 may incline more than necessary. In particular, when the step of transporting and heating the inside of the horizontal heating furnace while pulling the long shaped body 40 is performed, the door stop 20 is easily tilted. However, in this specific manufacturing method, since the support part 41 forms the long molded body 40 extending to the vicinity of the front end part 23 of the door stop 20, the long molded body 40 is made of a low-hardness rubber composition. Even if it is molded or transported in the horizontal heating furnace while towing, the support part 41 is supported in contact with the door contact part 20 that tilts gradually, in particular, its tip part 23 to prevent excessive bending. it can. In particular, the concrete manufacturing method of the door-to-door member 1 uses a silicone rubber composition that is excellent in durability, weather resistance, etc., has a relatively small hardness, is flexible, and cannot be held until the shape after extrusion is cured. In addition, it is possible to manufacture a door contact member having a predetermined shape that is excellent in durability, weather resistance, and the like by preventing excessive bending of the door contact portion 20. At this time, the distal end portion 23 and the support portion 41 are partly in contact with the side surface of the distal end portion 23, as in the case of the long shaped cured body 45 shown in FIG. 5.

  In this heating step, the door stop 20 is tilted, and in some cases, the long shaped body 40 is heat vulcanized or heat cured while being in contact with and supported by the support portion 41. The vulcanization conditions or curing conditions at this time are selected according to the rubber composition used, and the temperature and time for vulcanizing or curing the rubber composition, and are usually heated for a predetermined time in a heating furnace or the like. For example, the silicone rubber composition is preferably heat-cured through primary curing and secondary curing in terms of excellent dimensional stability and the like, and the conditions of the primary curing and secondary curing depend on the silicone rubber composition. Appropriate conditions are selected. In this way, when the long shaped body 40 is heat vulcanized or heat cured, when the door stop 20 is in contact with the support portion 41, the long shaped hardened body 45 shown in FIG. Is formed. In the long molded cured body 45, the support portion 41 is partially heated by the tip portion 23 coming into contact with the tip portion 23, and the contact portion between the support portion 41 and the tip portion 23 is formed by the support portion 41. Also gets thinner.

  In this specific manufacturing method, a step of removing the support portion 41 from the long shaped cured body 45 is performed as desired. This step can be performed at any time, for example, immediately after the heating step, before shipment, or immediately before use. This removal step may be performed before shipment or immediately before use in that the bending of the door stop 20 during storage can be prevented. That is, in this specific manufacturing method, the elongated molded and cured body 45 can be stored as it is, or can be stored after the support portion 41 is removed.

  When the support portion 41 is pulled, it can be easily peeled off from the contact portion with the door stop portion 20 where a part of the tip of the support portion 41 is contact-cured. In particular, if a cut or the like is formed in the standing portion of the support portion 41 in the main body 10, the support portion 41 can be easily separated from the main body 10. When the support portion 41 is peeled from the door stop portion 20 and the main body 10 in this manner, linear traces of the support portion 41 remain on the door stop portion 20 and the main body 10 that have been contact-hardened with the support portion 41. In addition, the support part 41 can also be removed by excision.

  In this specific manufacturing method, since the bending of the door stop 20 after molding can be prevented in this way, even if a rubber composition containing a low hardness rubber component is used, it is extruded by an extrusion process. Thus, the door stop member 1 having a predetermined shape can be manufactured with good reproducibility.

  When manufacturing the door stop member 2, the support portion 41 may be erected on the main body 10 in the same manner as the door stop member 1, but as shown by the broken line in FIG. It is preferable to provide a support portion 42 that extends toward 20.

  The door contact member according to the present invention is not limited to the above-described example, and various modifications can be made within a range in which the object of the present invention can be achieved. For example, the main body 10 has a single plate-like main body 11 and a mounting portion 12. However, in the present invention, the main body may not be a plate shape such as a columnar shape, and has a plurality of plate-like main bodies. It does not have to have a mounting portion.

  Further, the door stop member according to the present invention may be formed such that the thickness of the bent portion is thin so that the door stop portion can be easily bent in order to perform an intended function, and the inside of the bent portion has a circular cross section. Or you may provide notch grooves, such as a polygon. Even if the bent portion is modified in this manner, the door stop member according to the present invention is manufactured by the door contact member manufacturing method according to the present invention, and thus is manufactured in a predetermined shape with good reproducibility.

  The manufacturing method of the door contact member which concerns on this invention is not limited to the specific manufacturing method mentioned above, A various change is possible in the range which can achieve the objective of this invention. For example, the door contact member manufacturing method according to the present invention may include a step of cutting the long molded cured body 45 or the door contact member 1 or 2 into a predetermined length as desired.

  Moreover, the manufacturing method of the door stop member which concerns on this invention may have the process of adjusting the bending state of a door stop part before the process of heating, and implements the process of adjusting with the process of heating. Also good. The process of adjusting can be implemented by arrange | positioning correction tools, such as a blade which corrects the bending state of a door stop part, to the conveyance path | route of the elongate molded object 40, for example.

Example 1
Rubber composition containing 100 parts by mass of a silicone rubber composition (trade name: KE-5620WU, manufactured by Shin-Etsu Chemical Co., Ltd.) and 2 parts by mass of a curing agent (trade name: C-24, manufactured by Shin-Etsu Chemical Co., Ltd.) A product was prepared. The JIS A hardness after curing of this rubber composition was 70.

Using this rubber composition, an elongated shaped body 40 having the shape shown in FIG. 3 was formed by a vertical extruder equipped with the die 30 shown in FIG. The dimensions of the elongated shaped body 40 are as follows.
Body 10 width 20mm, overall thickness 25mm, length 50m
The door stop member 20 has a thickness of 1.5 mm, a height of 20 mm, and an inclination angle of 120 ° with respect to the plate-like body 11.
Bending angle of bent portion 22 120 °
The tip 23 has a thickness of 1.5 mm and a height of 10 mm.
The standing portion 21 has a thickness of 1.5 mm, a height of 10 mm, and an inclination angle of 120 ° with respect to the plate-like body 11.
The support part 41 has a thickness of 1.5 mm, an extension length of 18 mm, an inclination angle of 70 ° with respect to the plate-like main body 11, and a separation distance of 1 mm from the tip part 23

  Next, the elongated molded body 40 was conveyed in a vertical heating furnace having an internal temperature set to 500 ° C. over 10 seconds to primarily cure the rubber composition. Next, this primary cured body was put into an oven (dryer) whose internal temperature was set to 200 ° C. for 5 hours and secondarily cured to obtain a long shaped cured body 45 shown in FIG.

  The edge part of the support part 41 of the long shape hardening body 45 was picked and removed, and the door stop member 1 was manufactured. In the manufactured door contact member 1, the bending angle of the door contact portion 20 was 120 °, and the predetermined bending angle, that is, the predetermined shape was satisfied.

  Similarly, when 10 specimens of the door contact member 1 were manufactured, the bending angle of the door contact member 20 was within a predetermined angle ± 5 ° in all specimens, and high reproducibility was obtained.

(Example 2)
The door stop member 2 was manufactured in the same manner as in Example 1 using a die having a cavity corresponding to the shape shown in FIG. 2 instead of the die shown in FIG. Results were obtained.

(Comparative Example 1)
Using a die having a cavity corresponding to the shape shown in FIG. 1 instead of the die shown in FIG. 4, a door contact member 10 specimen was manufactured basically in the same manner as in Example 1. As a result, the door stop portion of each door stop member was greatly bent and deviated from a predetermined bending angle. Moreover, the bending angle in each door stop member varied greatly, and the reproducibility of the manufactured door stop member was poor.

DESCRIPTION OF SYMBOLS 1, 2 Door contact member 10 Main body 11 Plate-shaped main body 12 Mounting part 20 Door stop part 21 Standing part 22 Bending part 23 Tip part 25 Opposite wall 30 Die 31 Cavity 40 Long shaped molded body 41, 42 Support part 45 Long Molded cured body

Claims (6)

A method of manufacturing a door stop member having a door stop portion that is self-supporting in a bent shape from a long body,
A rubber composition containing a silicone rubber component having a JIS A hardness of 50 to 80 is extended from the main body, the door stop portion, and the main body toward the door stop portion to support the door stop portion. A method for manufacturing a door-to-door member, comprising: a step of extruding a long shaped body having a supporting portion to be heated; a step of heating the long shaped shaped body; and a step of removing the supporting portion .   The manufacturing method of the door stop member of Claim 1 currently extended so that the said support part may be connected or spaced apart to the door stop part. The manufacturing method of the door stop member of Claim 1 or 2 with which the said support part has the groove-shaped notch along the extension direction of the said elongate molded object in the said main body side . The door stop member is erected outward from one end edge side of the main body along the extending direction of the main body, and is connected to the erected portion, The manufacturing method of the door stop member of any one of Claims 1-3 which has the bending part bent in the opposite direction to an installation direction, and the front-end | tip part connected with the said bending part. The said support part is erected along the extension direction of the said main body, and is formed in the opposing wall facing the said door stop part, The manufacture of the door stop member of any one of Claims 1-4 Method. The method for manufacturing a door stop member according to any one of claims 1 to 5, wherein the heating step is performed using a horizontal heating furnace.

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