JP2005193428A - Manufacturing method of floor raising material for automobile - Google Patents

Manufacturing method of floor raising material for automobile Download PDF

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JP2005193428A
JP2005193428A JP2003435956A JP2003435956A JP2005193428A JP 2005193428 A JP2005193428 A JP 2005193428A JP 2003435956 A JP2003435956 A JP 2003435956A JP 2003435956 A JP2003435956 A JP 2003435956A JP 2005193428 A JP2005193428 A JP 2005193428A
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mold
groove
rib
raising material
floor raising
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JP4462924B2 (en
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Hiroo Inui
博雄 乾
Toru Katayama
亨 片山
Teruo Tamada
輝雄 玉田
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Kyoraku Co Ltd
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Kyoraku Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a lightweight and inexpensive floor raising material for an automobile. <P>SOLUTION: In the manufacturing method of the floor reising material for the automobile having a hollow double wall structure which has a surface wall and a rear wall opposed to each other so as to leave an interval, a split mold equipped with one mold, which has a groove-like rib forming part protruded in a plate-like state for forming a plurality of groove-like ribs 5 depressed in a groove-like state to the surface wall 2 of the floor raising material 1 for the automobile, and another mold, which has a conical rib forming part protruded in an almost conical shape for forming a plurality of conical ribs 6 protruded in an almost conical shape to the rear wall 3 of the floor raising material 1, is opened to suspend a molten parison. Subsequently, the split mold is clamped so that the leading end parts of the groove-like rib forming part formed to one mold 8 and the leading end parts of the almost conical rib forming parts formed to another mold approach in opposed relationship. A pressure fluid is blown in the parison not only to expand the parison along the cavities of one mold and another mold but also to integrally weld the groove-like ribs 5 on the side of the surface wall 2 and the almost conical ribs 6 on the side of the rear wall 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、自動車のフロアパンに配設して床面を所要の高さに設定するための自動車用フロア嵩上げ材の製造方法に関するものである。   The present invention relates to a method for manufacturing an automobile floor raising material for setting a floor surface to a required height by being arranged on a floor pan of an automobile.

自動車のフロアパンに配設して床面を所要の高さに設定するための自動車用フロア嵩上げ材としては、フロアパンとカーペットとの間に介在させて床面の嵩上げをするものが知られており、このフロア嵩上げ材は、射出成形された発泡倍率が２０〜４５倍の発泡樹脂材料を芯材に、同一形状にトリムしたレンジフェルト等からなる断熱材を芯材のフロアパン側に積層したものである（特開２００１−３４７８７２公報参照）。また、硬質発泡プラスチックからなる嵩上げ材であってハニカム構造等の衝撃吸収材が一体に嵌合されたものも知られている（特開２００３−１１８４６０公報参照）。
特開２００１−３４７８７２公報 特開２００３−１１８４６０公報 2. Description of the Related Art As an automobile floor raising material for setting a floor surface to a required height by being arranged on a floor pan of an automobile, a material for raising the floor surface by being interposed between a floor pan and a carpet is known. This floor raising material is laminated on the floor pan side of the core material with a heat-insulated material such as range felt trimmed to the same shape with a foamed resin material with an expansion ratio of 20 to 45 times as the core material. (See JP 2001-347872 A). Further, a raising material made of hard foamed plastic, in which an impact absorbing material such as a honeycomb structure is integrally fitted, is also known (see JP 2003-118460 A).
JP 2001-347872 A JP 2003-118460 A

前掲の特開２００１−３４７８７２公報に記載されているフロア嵩上げ材にあっては、芯材の射出成形に用いられる射出成形金型が高価であるとともに、心材に断熱材を積層するための工数が多く、特に、軽量であってしかも高い剛性を有し、遮音性を兼ね備えたものでは成形工程が多く煩雑であった。また、前掲の特開２００３−１１８４６０公報に記載されているものにあっては、中空構造を有しないので遮音性に劣るものであった。   In the floor raising material described in the above-mentioned JP-A-2001-347872, the injection mold used for injection molding of the core material is expensive, and the man-hour for laminating the heat insulating material on the core material is increased. In particular, a light-weight, high-rigidity and sound-insulating material requires many molding processes and is complicated. Moreover, in what was described in the above-mentioned Unexamined-Japanese-Patent No. 2003-118460, since it did not have a hollow structure, it was inferior to sound insulation.

本発明は、上記従来の技術の有する課題に鑑みてなされたものであって、軽量かつ安価な自動車用フロア嵩上げ材の製造方法を提供することを目的とするものである。   The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a lightweight and inexpensive method for producing an automotive floor raising material.

上記目的を達成するための本発明の請求項１に係る自動車用フロア嵩上げ材の製造方法は、間隔をおいて対向する表壁と裏壁とを有する中空二重壁構造の自動車用フロア嵩上げ材の製造方法であって、自動車用フロア嵩上げ材の表壁側に溝状に凹んだ複数の溝状リブを形成するための板状に突出したリブ形成部を有する一方の金型と、自動車用フロア嵩上げ材の裏壁側に略円錐状に窪んだ複数の円錐状リブを形成するための略円錐状に突出したリブ形成部を有する他方の金型とを備えた分割金型を型開きし、前記分割金型間に溶融したパリソンを垂下させ、一方の金型の前記リブ形成部の先端部と他方の金型の前記リブ形成部の先端部が対向して近接するように型締めし、前記パリソン内に加圧流体を吹き込むことにより、前記分割金型のキャビティに沿ってパリソンを膨張させるとともに、溝状リブと円錐状リブとを一体に溶着することを特徴とするものである。   In order to achieve the above object, a method for producing an automobile floor raising material according to claim 1 of the present invention comprises a hollow double wall structure automobile floor raising material having a front wall and a back wall opposed to each other at an interval. One mold having a rib-forming portion protruding in a plate shape for forming a plurality of groove-like ribs recessed in a groove shape on the front wall side of the automobile floor raising material, and Opening a split mold including the other mold having a substantially cone-shaped rib forming portion for forming a plurality of conical ribs recessed in a substantially conical shape on the back wall side of the floor raising material. The molten parison is suspended between the split molds, and the mold is clamped so that the tip of the rib forming part of one mold faces the tip of the rib forming part of the other mold. , By blowing a pressurized fluid into the parison, Together inflate the parison along the Activity, a groove-like ribs and conical rib is characterized in that welded together.

本発明の請求項２に係る自動車用フロア嵩上げ材の製造方法は、請求項１の方法において、パリソンは分割金型のピンチオフ形成部の全周にバリが形成されるように配置されることを特徴とするものである。   According to a second aspect of the present invention, there is provided a method for manufacturing an automotive floor raising material according to the first aspect, wherein the parison is arranged so that burrs are formed all around the pinch-off forming portion of the split mold. It is a feature.

本発明の請求項３に係る自動車用フロア嵩上げ材の製造方法は、請求項１または２の方法において、一方の金型のキャビティ面から突出した板状のリブ形成部の高さと、他方の金型のキャビティ面から突出した略円錐状のリブ形成部の高さとの合計の高さが１００ｍｍ以下であることを特徴とするものである。   According to a third aspect of the present invention, there is provided a method for manufacturing a floor raising material for automobiles according to the first or second aspect, wherein the height of the plate-like rib forming portion protruding from the cavity surface of one mold and the other metal The total height of the substantially conical rib forming portion protruding from the cavity surface of the mold is 100 mm or less.

本発明の請求項４に係る自動車用フロア嵩上げ材の製造方法は、間隔をおいて対向する表壁と裏壁とを有する中空二重壁構造の自動車用フロア嵩上げ材の製造方法であって、自動車用フロア嵩上げ材の表壁側に溝状に凹んだ複数の溝状リブを形成するための板状に突出したリブ形成部を有する一方の金型と、自動車用フロア嵩上げ材の裏壁側に表壁側の溝状リブと略直交する方向に溝状に窪んだ複数の溝状リブを形成するための板状に突出したリブ形成部を有する他方の金型とを備えた分割金型を型開きし、前記分割金型のピンチオフ形成部の全周にバリが形成するように溶融したパリソンを垂下させ、一方の金型に形成される板状のリブ形成部と他方の金型に形成される板状のリブ形成部とはその合計の高さが５０ｍｍ以下に設けられているとともに、互いのリブ形成部の先端部が略直交して近接するように型締めし、前記パリソン内に加圧流体を吹き込むことにより、前記分割金型のキャビティに沿って膨張させるとともに、表壁側の溝状リブと裏壁側の溝状リブとを一体に溶着することを特徴とするものである。   A method for producing an automotive floor raising material according to claim 4 of the present invention is a method for producing an automotive floor raising material having a hollow double wall structure having a front wall and a back wall facing each other at an interval, One mold having rib forming portions protruding in a plate shape to form a plurality of groove-shaped ribs recessed in a groove shape on the front wall side of the automotive floor raising material, and the back wall side of the automotive floor raising material And a second mold having a rib-forming portion protruding in a plate shape for forming a plurality of groove-shaped ribs recessed in a groove shape in a direction substantially orthogonal to the groove-shaped rib on the front wall side Open the mold and hang down the melted parison so that burrs are formed around the entire circumference of the pinch-off forming part of the split mold, so that the plate-like rib forming part formed in one mold and the other mold The plate-like rib forming portion to be formed is provided with a total height of 50 mm or less. In addition, the molds are clamped so that the tip portions of the rib forming portions are close to each other in a substantially orthogonal manner, and the pressurized fluid is blown into the parison to expand the cavity along the cavity of the split mold, and the front wall The groove ribs on the side and the groove ribs on the back wall side are integrally welded.

本発明によれば、軽量かつ安価な自動車用フロア嵩上げ材を容易に得ることができる。   According to the present invention, a lightweight and inexpensive automobile floor raising material can be easily obtained.

図１は本発明の一実施の形態に係る自動車用フロア嵩上げ材を一部破断して示す斜視図、図２は同上断面図、図３は図１および図２に示す自動車用フロア嵩上げ材のブロー成形態様を示す一部の断面図、図４は図３の状態から型締めしてブロー成形した状態を示す一部の断面図である。   1 is a perspective view showing a partially raised automobile floor raising material according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the same, and FIG. 3 is an illustration of the automobile floor raising material shown in FIGS. FIG. 4 is a partial cross-sectional view showing a blow-molded state, and FIG. 4 is a partial cross-sectional view showing a blow-molded state after clamping from the state of FIG.

図１および図２において、フロア嵩上げ材１は、ブロー成形により一体成形された熱可塑性樹脂製の中空二重壁構造体であって、中空部１９を有するとともに間隔をおいて相対する表壁２と裏壁３とを有し、表壁２と裏壁３の周縁には側壁４が連設されている。   1 and 2, the floor raising material 1 is a hollow double wall structure made of thermoplastic resin integrally formed by blow molding, and has a hollow portion 19 and is opposed to the front wall 2 with a space therebetween. And a back wall 3, and side walls 4 are connected to the periphery of the front wall 2 and the back wall 3.

表壁２には裏壁３に向かって溝状に凹んだ複数の溝状リブ５が略平行に形成されており、各溝状リブ５の長手方向両端と側壁４との間には隙間が設けられている。   A plurality of groove-shaped ribs 5 that are recessed in a groove shape toward the back wall 3 are formed in the front wall 2 substantially in parallel, and there are gaps between the longitudinal ends of each groove-shaped rib 5 and the side walls 4. Is provided.

他方、裏壁３には、各溝状リブ５に対向する部位に各溝状リブ５ごとに表壁２側に向かって略円錐状に窪んだ円錐状リブ６が形成されており、各円錐状リブ６の頂壁と溝状リブ５の先端部とが溶着部７をなして一体化されている。そして、複数の円錐状リブ６は溝状リブ５の長手方向において隣接する列の間で互い違い状に配置されている。   On the other hand, conical ribs 6 that are recessed in a substantially conical shape toward the front wall 2 for each groove-like rib 5 are formed on the back wall 3 at portions facing each groove-like rib 5. The top wall of the rib 6 and the tip of the groove rib 5 are integrated with each other as a welded portion 7. The plurality of conical ribs 6 are alternately arranged between adjacent rows in the longitudinal direction of the groove-like ribs 5.

フロア嵩上げ材１は、ＡＢＳ樹脂、変性ポリフェニレンオキサイド系樹脂、ポリカーボネート樹脂、ポリアミド樹脂、ポリプロピレン樹脂等の熱可塑性樹脂で構成される。   The floor raising material 1 is made of a thermoplastic resin such as an ABS resin, a modified polyphenylene oxide resin, a polycarbonate resin, a polyamide resin, or a polypropylene resin.

フロア嵩上げ材１は、図３および図４に示すようにブロー成形される。すなわち、分割金型は一方の金型８、他方の金型９からなり、１０，１０はキャビティである。１１は溝状リブ形成部、１２は円錐状リブ形成部、１３は押出ヘッド、１４はパリソンである。図３に示すように、開いた一方の金型８と他方の金型９の間にパリソン１４を分割金型のピンチオフ形成部の全周にバリが形成するように垂下させ、図４に示すように一方の金型８に設けられた溝状リブ形成部１１の先端部１８と他方の金型９に設けられた円錐状リブ形成部１２の先端部１８が対向して近接するように型締めして上記キャビティ１０，１０に沿って膨張させ、表壁側の溝状リブ４と裏壁側の略円錐状のリブ５とを一体に溶着して、ブロー成形によって図１および図２に示すフロア嵩上げ体１を得る。上記ブロー成形において、パリソン１４は一方の金型８と他方の金型９からなる分割金型のピンチオフ部１７の全周にバリが形成されるように配置される。   The floor raising material 1 is blow-molded as shown in FIGS. That is, the split mold is composed of one mold 8 and the other mold 9, and 10 and 10 are cavities. 11 is a groove-shaped rib forming part, 12 is a conical rib forming part, 13 is an extrusion head, and 14 is a parison. As shown in FIG. 3, a parison 14 is suspended between one open mold 8 and the other mold 9 so that burrs are formed all around the pinch-off forming portion of the split mold, and is shown in FIG. Thus, the mold 18 is such that the tip 18 of the groove-shaped rib forming part 11 provided in one mold 8 and the tip 18 of the conical rib forming part 12 provided in the other mold 9 face each other. Fastened and expanded along the cavities 10 and 10, the groove rib 4 on the front wall side and the substantially conical rib 5 on the back wall side are integrally welded, and blow molding is performed in FIGS. The floor raising body 1 shown is obtained. In the blow molding, the parison 14 is arranged so that burrs are formed on the entire circumference of the pinch-off portion 17 of the split mold composed of one mold 8 and the other mold 9.

一方の金型８のキャビティ１０面から突出した板状のリブ形成部１１の高さと、他方の金型９のキャビティ１０面から突出した略円錐状のリブ形成部１１の高さとの合計の高さが１００ｍｍ以下である。上記構成によりフロア嵩上げ材をブロー成形することで溝状リブ形成部と円錐状リブ形成部によりパリソンが引き延ばされた場合であっても１００mm程度の厚みのフロア嵩上げ材を好適に形成することができ、ブロー成形行程におけるパリソンの破れまたはリブの先端部が薄肉となることによりフロア嵩上げ材の剛性が低下することを防止することができる。   The total height of the height of the plate-like rib forming portion 11 projecting from the cavity 10 surface of one mold 8 and the height of the substantially conical rib forming portion 11 projecting from the cavity 10 surface of the other mold 9 Is 100 mm or less. Even if the parison is stretched by the groove-like rib forming portion and the conical rib forming portion by blow-molding the floor raising material with the above configuration, a floor raising material having a thickness of about 100 mm is preferably formed. It is possible to prevent the parison from being broken in the blow molding process or the rigidity of the floor raising material from being lowered due to the thin end of the rib.

図５は本発明の他の実施の形態に係る自動車用フロア嵩上げ材を一部破断して示す斜視図、図６は同上断面図、図７は図５および図６に示す自動車用フロア嵩上げ材のブロー成形態様を示す一部の断面図、図８は図３の状態から型締めしてブロー成形した状態を示す一部の断面図である。   FIG. 5 is a partially cutaway perspective view showing an automotive floor raising material according to another embodiment of the present invention, FIG. 6 is a cross-sectional view of the same, and FIG. 7 is an automotive floor raising material shown in FIGS. FIG. 8 is a partial cross-sectional view showing a blow-molded state after clamping from the state of FIG. 3.

図５および図６に示すように、この実施の形態においては、表壁２に裏壁３側に向かって溝状に凹んだ複数の溝状リブ５が略平行に形成されており、裏壁３には表壁に向かって凹んだ複数の溝状リブ１５が前記表壁２側の溝状リブ５に対して交差する方向に形成されていて、溝状リブ５と溝状リブ１５の交差する部位が互いに溶着された溶着部７によって一体化されている。その他の構成は図１および図２に示すものと同構成である。   As shown in FIGS. 5 and 6, in this embodiment, the front wall 2 is formed with a plurality of groove-like ribs 5 that are recessed in the shape of grooves toward the back wall 3, and is substantially parallel to the back wall. 3, a plurality of groove-like ribs 15 recessed toward the front wall are formed in a direction intersecting with the groove-like rib 5 on the surface wall 2 side, and the groove-like rib 5 and the groove-like rib 15 intersect. The parts to be integrated are integrated by the welded portions 7 welded to each other. Other configurations are the same as those shown in FIGS.

図５および図６に示すフロア嵩上げ材１は、図７および図８に示すようにブロー成形される。すなわち、一方の金型８には溝状リブ形成部１１が、また他方の金型９には溝状リブ形成部１６が設けられており、溝状リブ形成部１１は表壁２側の溝状リブ５を、他方の金型９の溝状リブ１６は溝状リブ１５を形成するためのものである。一方の金型８の溝状リブ形成部１１と他方の金型９の溝状リブ形成部１６とはその合計の高さが５０ｍｍ以下に設けられている。なお、その他の構成および成形方法は図３および図４に示すものと同等である。   The floor raising material 1 shown in FIGS. 5 and 6 is blow-molded as shown in FIGS. That is, one mold 8 is provided with a groove-like rib forming portion 11, and the other mold 9 is provided with a groove-like rib forming portion 16. The groove-shaped rib 5 and the groove-shaped rib 16 of the other mold 9 are for forming the groove-shaped rib 15. The grooved rib forming part 11 of one mold 8 and the grooved rib forming part 16 of the other mold 9 are provided with a total height of 50 mm or less. Other structures and molding methods are the same as those shown in FIGS.

本発明の一実施の形態に係る自動車用フロア嵩上げ材を一部破断して示す斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a partially raised automobile floor raising material according to an embodiment of the present invention. 同上断面図である。It is sectional drawing same as the above. 図１および図２に示す自動車用フロア嵩上げ材のブロー成形態様を示す一部の断面図である。FIG. 3 is a partial cross-sectional view showing a blow molding aspect of the automotive floor raising material shown in FIGS. 1 and 2. 図３の状態から型締めしてブロー成形した状態を示す一部の断面図である。FIG. 4 is a partial cross-sectional view showing a state in which the mold is clamped and blow-molded from the state of FIG. 3. 本発明の他の実施の形態に係る自動車用フロア嵩上げ材を一部破断して示す斜視図である。It is a perspective view which partially fractures and shows the floor raising material for motor vehicles concerning other embodiments of the present invention. 同上断面図である。It is sectional drawing same as the above. 図５および図６に示す自動車用フロア嵩上げ材のブロー成形態様を示す一部の断面図である。FIG. 7 is a partial cross-sectional view showing a blow molding aspect of the automotive floor raising material shown in FIGS. 5 and 6. 図７の状態から型締めしてブロー成形した状態を示す一部の断面図である。FIG. 8 is a partial cross-sectional view showing a state where the mold is clamped and blow-molded from the state of FIG. 7.

符号の説明Explanation of symbols

１ フロア嵩上げ材
２ 表壁
３ 裏壁
４ 側壁
５ 溝状リブ
６ 円錐状リブ
７ 溶着部
８ 一方の金型
９ 他方の金型
１０，１０ キャビティ
１１ 溝状リブ形成部
１２ 円錐状リブ形成部
１３ 押出ヘッド
１４ パリソン
１５ 溝状リブ
１６ 溝状リブ形成部
１７ ピンチオフ部
１８ 先端部
１９ 中空部 DESCRIPTION OF SYMBOLS 1 Floor raising material 2 Front wall 3 Back wall 4 Side wall 5 Grooved rib 6 Conical rib 7 Welding part 8 One metal mold | die 9 The other metal mold | die 10,10 Cavity 11 Grooved rib forming part 12 Conical rib forming part 13 Extrusion head 14 Parison 15 Grooved rib 16 Grooved rib forming portion 17 Pinch-off portion 18 Tip portion 19 Hollow portion

Claims (4)

間隔をおいて対向する表壁と裏壁とを有する中空二重壁構造の自動車用フロア嵩上げ材の製造方法であって、
自動車用フロア嵩上げ材の表壁側に溝状に凹んだ複数の溝状リブを形成するための板状に突出したリブ形成部を有する一方の金型と、
自動車用フロア嵩上げ材の裏壁側に略円錐状に窪んだ複数の円錐状リブを形成するための略円錐状に突出したリブ形成部を有する他方の金型とを備えた分割金型を型開きし、
前記分割金型間に溶融したパリソンを垂下させ、
一方の金型の前記リブ形成部の先端部と他方の金型の前記リブ形成部の先端部が対向して近接するように型締めし、
前記パリソン内に加圧流体を吹き込むことにより、
前記分割金型のキャビティに沿ってパリソンを膨張させるとともに、
溝状リブと円錐状リブとを一体に溶着する
ことを特徴とする自動車用フロア嵩上げ材の製造方法。 A method for producing an automotive floor raising material having a hollow double wall structure having a front wall and a back wall facing each other at an interval,
One mold having a rib forming portion protruding in a plate shape for forming a plurality of groove-shaped ribs recessed in a groove shape on the front wall side of the floor raising material for automobiles,
A split mold having a rib-forming portion projecting in a substantially conical shape for forming a plurality of conical ribs recessed in a substantially conical shape on the back wall side of a floor raising material for an automobile is formed. Open and
A parison melted between the divided molds,
The mold is clamped so that the tip of the rib forming part of one mold and the tip of the rib forming part of the other mold are opposed and close to each other,
By blowing pressurized fluid into the parison,
Inflating the parison along the cavity of the split mold,
A method for producing an automotive floor raising material, wherein groove-shaped ribs and conical ribs are welded together. パリソンは分割金型のピンチオフ形成部の全周にバリが形成するように配置されることを特徴とする請求項１記載の自動車用フロア嵩上げ材の製造方法。   2. The method for manufacturing an automotive floor raising material according to claim 1, wherein the parison is arranged so that burrs are formed all around the pinch-off forming portion of the split mold. 一方の金型のキャビティ面から突出した板状のリブ形成部の高さと、他方の金型のキャビティ面から突出した略円錐状のリブ形成部の高さとの合計の高さが１００ｍｍ以下であることを特徴とする請求項１または２記載の自動車用フロア嵩上げ材の製造方法。 The total height of the height of the plate-like rib forming portion protruding from the cavity surface of one mold and the height of the substantially conical rib forming portion protruding from the cavity surface of the other die is 100 mm or less. The method for producing an automotive floor raising material according to claim 1 or 2. 間隔をおいて対向する表壁と裏壁とを有する中空二重壁構造の自動車用フロア嵩上げ材の製造方法であって、
自動車用フロア嵩上げ材の表壁側に溝状に凹んだ複数の溝状リブを形成するための板状に突出したリブ形成部を有する一方の金型と、
自動車用フロア嵩上げ材の裏壁側に表壁側の溝状リブと略直交する方向に溝状に窪んだ複数の溝状リブを形成するための板状に突出したリブ形成部を有する他方の金型とを備えた分割金型を型開きし、
前記分割金型のピンチオフ形成部の全周にバリが形成するように溶融したパリソンを垂下させ、
一方の金型に形成される板状のリブ形成部と他方の金型に形成される板状のリブ形成部とはその合計の高さが５０ｍｍ以下に設けられているとともに、
互いのリブ形成部の先端部が略直交して近接するように型締めし、
前記パリソン内に加圧流体を吹き込むことにより、
前記分割金型のキャビティに沿って膨張させるとともに、
表壁側の溝状リブと裏壁側の溝状リブとを一体に溶着する
ことを特徴とする自動車用フロア嵩上げ材の製造方法。 A method for producing an automotive floor raising material having a hollow double wall structure having a front wall and a back wall facing each other at an interval,
One mold having a rib forming portion protruding in a plate shape for forming a plurality of groove-shaped ribs recessed in a groove shape on the front wall side of the floor raising material for automobiles,
On the back wall side of the automotive floor raising material, the other has a rib forming portion protruding in a plate shape for forming a plurality of groove-shaped ribs recessed in a groove shape in a direction substantially orthogonal to the groove-shaped rib on the front wall side. Open the split mold with the mold,
The molten parison is suspended so that burrs are formed all around the pinch-off forming portion of the split mold,
The plate-like rib forming portion formed on one mold and the plate-like rib forming portion formed on the other die are provided with a total height of 50 mm or less,
The molds are clamped so that the tip portions of the rib forming portions are close to each other substantially orthogonally,
By blowing pressurized fluid into the parison,
Inflating along the cavity of the split mold,
A method for producing an automotive floor raising material, wherein a groove rib on the front wall side and a groove rib on the back wall side are integrally welded.
JP2003435956A 2003-12-26 2003-12-26 Manufacturing method of floor raising material for automobile Expired - Fee Related JP4462924B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013001842A1 (en) * 2011-06-29 2013-01-03 キョーラク株式会社 Method for manufacturing integrated floor-raising material/duct
JP2021154512A (en) * 2020-03-25 2021-10-07 豊田合成株式会社 Resin molded product

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013001842A1 (en) * 2011-06-29 2013-01-03 キョーラク株式会社 Method for manufacturing integrated floor-raising material/duct
US9180619B2 (en) 2011-06-29 2015-11-10 Kyoraku Co., Ltd. Method for producing duct-integrated floor-raising material
JP2021154512A (en) * 2020-03-25 2021-10-07 豊田合成株式会社 Resin molded product
JP7222375B2 (en) 2020-03-25 2023-02-15 豊田合成株式会社 Resin molded product

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