JP5750521B2 - Pneumatic tire - Google Patents

Pneumatic tire Download PDF

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Publication number
JP5750521B2
JP5750521B2 JP2014011435A JP2014011435A JP5750521B2 JP 5750521 B2 JP5750521 B2 JP 5750521B2 JP 2014011435 A JP2014011435 A JP 2014011435A JP 2014011435 A JP2014011435 A JP 2014011435A JP 5750521 B2 JP5750521 B2 JP 5750521B2
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hook
tire
loop fastener
base material
fastener
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JP2014097791A (en
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丹野　篤
丹野　　篤
彩子 城座
彩子 城座
小川　史郎
史郎 小川
藤田　明
藤田　　明
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Kuraray Plastics Co Ltd
Yokohama Rubber Co Ltd
Kuraray Fastening Co Ltd
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Kuraray Plastics Co Ltd
Yokohama Rubber Co Ltd
Kuraray Fastening Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/0061—Accessories, details or auxiliary operations not otherwise provided for
    • B29D2030/0072—Attaching fasteners to tyres, e.g. patches, in order to connect devices to tyres

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  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Tires In General (AREA)

Description

本発明は、吸音材等の付属物を必要に応じて取り付けるための面ファスナーをタイヤ内面に備えた空気入りタイヤに関し、更に詳しくは、面ファスナーとタイヤ内面との間における空気溜まりを抑制し、面ファスナーの接着性を高めることを可能にした空気入りタイヤに関する。   The present invention relates to a pneumatic tire provided with a hook-and-loop fastener on the tire inner surface for attaching an accessory such as a sound-absorbing material as required, more specifically, suppressing air accumulation between the hook-and-loop fastener and the tire inner surface, The present invention relates to a pneumatic tire that can improve the adhesion of a hook-and-loop fastener.

従来、吸音材等の付属物の取り付けを容易にするために、タイヤ内面に面ファスナーを備え付けた空気入りタイヤが提案されている（例えば、特許文献１参照）。空気入りタイヤにおいては、空洞部内で生じる共鳴音を低減するために、空洞部内に吸音材を設置することが行われているが、上記面ファスナー付き空気入りタイヤによれば、吸音材等の付属物を必要に応じて簡単に着脱することができる。   Conventionally, in order to facilitate attachment of an accessory such as a sound absorbing material, a pneumatic tire provided with a hook-and-loop fastener on the inner surface of the tire has been proposed (for example, see Patent Document 1). In the pneumatic tire, in order to reduce the resonance generated in the cavity, a sound absorbing material is installed in the cavity, but according to the pneumatic tire with a hook-and-loop fastener, the sound absorbing material and the like are attached. Objects can be easily attached and detached as necessary.

しかしながら、面ファスナーの幅を広くした場合、面ファスナーをタイヤ内面に対して加硫接着するにあたって、面ファスナーとタイヤ内面との間に空気が溜まり、接着不良が発生するという問題がある。このような空気溜まりに起因する接着不良が存在すると、面ファスナーがタイヤ内面から剥離し易くなり、空気入りタイヤの耐久性が低下する要因となる。   However, when the width of the hook-and-loop fastener is widened, when the hook-and-loop fastener is vulcanized and bonded to the inner surface of the tire, there is a problem that air accumulates between the hook-and-loop fastener and the inner surface of the tire and adhesion failure occurs. If there is an adhesion failure due to such air accumulation, the hook-and-loop fastener is easily peeled off from the inner surface of the tire, which causes a decrease in durability of the pneumatic tire.

特開２００６−４４５０３号公報JP 2006-44503 A

本発明の目的は、面ファスナーをタイヤ内面に接着するにあたって、面ファスナーとタイヤ内面との間における空気溜まりを抑制し、面ファスナーの接着性を高めることを可能にした空気入りタイヤを提供することにある。   An object of the present invention is to provide a pneumatic tire that suppresses air accumulation between the hook-and-loop fastener and the inner surface of the tire when bonding the hook-and-loop fastener to the inner surface of the tire, thereby improving the adhesion of the hook-and-loop fastener. It is in.

上記目的を達成するための本発明の空気入りタイヤは、基材部の一方の面に複数本の係合素子を設けた面ファスナーを有し、該面ファスナーの基材部を前記係合素子がタイヤ内腔側に位置するようにタイヤ内面に接着した空気入りタイヤにおいて、前記係合素子の高さが０．５ｍｍ〜５．０ｍｍであり、前記係合素子の形状がＴ字形状又は鏃形状であると共に、前記面ファスナーの基材部に該基材部を貫通する複数の小孔を設け、該小孔の直径が０．１ｍｍ〜１．５ｍｍであり、１ｃｍ2当たりの前記小孔の個数が４〜１００個であり、前記タイヤ内面に位置するゴム層の一部が前記小孔を介して前記基材部の一方の面側へ流出した状態で加硫されたことを特徴とするものである。 In order to achieve the above object, a pneumatic tire of the present invention has a surface fastener provided with a plurality of engagement elements on one surface of a base material portion, and the base material portion of the surface fastener is connected to the engagement element. In the pneumatic tire bonded to the tire inner surface so that is located on the tire lumen side, the height of the engagement element is 0.5 mm to 5.0 mm, and the shape of the engagement element is T-shaped or The shape of the surface fastener is provided with a plurality of small holes penetrating the base material portion, and the diameter of the small holes is 0.1 mm to 1.5 mm, and the small holes per 1 cm 2 4 to 100, and a part of the rubber layer located on the inner surface of the tire is vulcanized in a state of flowing out to one surface side of the base material portion through the small hole. To do.

また、本発明の空気入りタイヤは、上記構成に加えて、前記面ファスナーの基材部の他方の面に該基材部の面方向に延長する少なくとも１本の溝を設けたことを特徴とするものである。   The pneumatic tire of the present invention is characterized in that, in addition to the above configuration, at least one groove extending in the surface direction of the base material portion is provided on the other surface of the base material portion of the surface fastener. To do.

本発明では、面ファスナーの基材部を係合素子がタイヤ内腔側に位置するようにタイヤ内面に接着した空気入りタイヤにおいて、面ファスナーの基材部に小孔及び／又は溝を設けることにより、これら小孔及び／又は溝が通気路として機能するため、面ファスナーとタイヤ内面との間における空気溜まりを抑制し、面ファスナーの接着性を高めることができる。しかも、面ファスナーの基材部に小孔及び／又は溝を設けた場合、面ファスナーの接着面積が増大し、その接着面積の増加も接着性の向上に寄与する。   In the present invention, in the pneumatic tire in which the base portion of the hook-and-loop fastener is bonded to the inner surface of the tire so that the engaging element is positioned on the tire lumen side, a small hole and / or a groove is provided in the base portion of the hook-and-loop fastener. Therefore, since these small holes and / or grooves function as air passages, it is possible to suppress air accumulation between the hook-and-loop fastener and the tire inner surface, and to improve the adhesiveness of the hook-and-loop fastener. And when a small hole and / or a groove | channel are provided in the base-material part of a hook_and_loop | surface fastener, the adhesion area of a hook_and_loop | surface fastener will increase and the increase in the adhesion area will also contribute to the improvement of adhesiveness.

本発明において、小孔の直径は０．１ｍｍ〜１．５ｍｍであり、１ｃｍ2当たりの小孔の個数は４〜１００個である。これにより、空気溜まりの抑制効果と接着面積の増大効果とを十分に確保することができる。 In the present invention, the diameter of the small holes is 0.1 mm to 1.5 mm, and the number of small holes per 1 cm 2 is 4 to 100. Thereby, the suppression effect of an air pocket and the increase effect of a bonding area are fully securable.

また、面ファスナーの基材部に小孔を設ける場合、面ファスナーの基材部の一方の面に小孔を覆うように庇部を設けることが好ましい。つまり、面ファスナーをタイヤ内面に加硫接着するにあたって、係合素子の潰れを防止するために基材部の一方の面に保護ゴム層を積層した場合、上述の小孔から流れ出したタイヤ内面のゴム層が保護ゴム層と一体化するため、保護ゴム層を剥がして係合素子を露出させる作業が困難になる。これに対して、面ファスナーの基材部の一方の面に小孔を覆うように庇部を設けた場合、タイヤ内面のゴム層と保護ゴム層との接着面積を最小限に留めることができ、その結果として、保護ゴム層の剥離作業を簡単に行うことが可能になる。   Moreover, when providing a small hole in the base-material part of a hook-and-loop fastener, it is preferable to provide a collar part so that a small hole may be covered on one surface of the base-material part of a hook-and-loop fastener. That is, when the surface fastener is vulcanized and bonded to the inner surface of the tire, when a protective rubber layer is laminated on one surface of the base material portion in order to prevent the engagement element from being crushed, Since the rubber layer is integrated with the protective rubber layer, it is difficult to remove the protective rubber layer and expose the engaging element. On the other hand, when a collar is provided on one surface of the base part of the hook-and-loop fastener so as to cover the small hole, the adhesion area between the rubber layer on the tire inner surface and the protective rubber layer can be minimized. As a result, the protective rubber layer can be easily peeled off.

一方、面ファスナーの基材部の他方の面に該基材部の面方向に延長する少なくとも１本の溝を設ける場合、その溝の深さは０．０５ｍｍ〜０．１５ｍｍであり、その溝の幅は０．０５ｍｍ〜１．０ｍｍであることが好ましい。これにより、空気溜まりの抑制効果と接着面積の増大効果とを十分に確保することができる。   On the other hand, when providing at least one groove extending in the surface direction of the base material portion on the other surface of the base material portion of the surface fastener, the depth of the groove is 0.05 mm to 0.15 mm. The width is preferably 0.05 mm to 1.0 mm. Thereby, the suppression effect of an air pocket and the increase effect of a bonding area are fully securable.

また、面ファスナーの基材部の他方の面には複数本のアンカー素子を設けることが好ましい。これらアンカー素子はタイヤ内面のゴム層に埋設されることになるため、面ファスナーのタイヤ内面に対する接着力を向上することができる。   Moreover, it is preferable to provide a plurality of anchor elements on the other surface of the base portion of the hook-and-loop fastener. Since these anchor elements are embedded in the rubber layer on the inner surface of the tire, the adhesion of the hook-and-loop fastener to the inner surface of the tire can be improved.

本発明の実施形態からなる空気入りタイヤを示す子午線半断面図である。It is a meridian half section view showing a pneumatic tire according to an embodiment of the present invention. 本発明で使用される面ファスナーの一例を示す斜視図である。It is a perspective view which shows an example of the hook_and_loop | surface fastener used by this invention. 図２の面ファスナーをタイヤ内面に加硫接着した状態を示す要部断面図である。It is principal part sectional drawing which shows the state which vulcanized-bonded the surface fastener of FIG. 2 to the tire inner surface. 本発明で使用される面ファスナーの他の例を示す斜視図である。It is a perspective view which shows the other example of the hook_and_loop | surface fastener used by this invention. 本発明で使用される面ファスナーの更に他の例を示す斜視図である。It is a perspective view which shows the further another example of the hook_and_loop | surface fastener used by this invention. 本発明で使用される面ファスナーに保護ゴム層を積層した状態を示す断面図である。It is sectional drawing which shows the state which laminated | stacked the protective rubber layer on the surface fastener used by this invention. 図５の面ファスナーをタイヤ内面に加硫接着した状態を示す要部断面図である。It is principal part sectional drawing which shows the state which vulcanized-bonded the surface fastener of FIG. 5 to the tire inner surface. 本発明で使用される面ファスナーの更に他の例を示す斜視図である。It is a perspective view which shows the further another example of the hook_and_loop | surface fastener used by this invention.

以下、本発明の構成について添付の図面を参照しながら詳細に説明する。図１は本発明の実施形態からなる空気入りタイヤを示し、図２は本発明で使用される面ファスナーの一例を示し、図３は図２の面ファスナーをタイヤ内面に加硫接着した状態を示すものである。   Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows a pneumatic tire according to an embodiment of the present invention, FIG. 2 shows an example of a hook-and-loop fastener used in the present invention, and FIG. 3 shows a state in which the hook-and-loop fastener of FIG. It is shown.

図１において、１はトレッド部、２はサイドウォール部、３はビード部である。左右一対のビード部３，３間にはカーカス層４が装架されている。このカーカス層４は各ビード部３に配置されたビードコア５の廻りにタイヤ内側から外側に折り返されている。また、カーカス層４よりもタイヤ内腔側の部位にはインナーライナー層６が配置されている。一方、トレッド部１におけるカーカス層４の外周側には複数層のベルト層７が埋設されている。   In FIG. 1, 1 is a tread portion, 2 is a sidewall portion, and 3 is a bead portion. A carcass layer 4 is mounted between the pair of left and right bead portions 3 and 3. The carcass layer 4 is folded back from the inside to the outside of the tire around a bead core 5 disposed in each bead portion 3. Further, an inner liner layer 6 is disposed at a position closer to the tire lumen than the carcass layer 4. On the other hand, a plurality of belt layers 7 are embedded on the outer peripheral side of the carcass layer 4 in the tread portion 1.

上記空気入りタイヤにおいて、タイヤ内面Ｓのトレッド部１に対応する領域には面ファスナー１０が設置されている。面ファスナー１０は、図２に示すように、シート状をなす基材部１１の一方の面１１ａに複数本の係合素子１２を設けた構造を有している。係合素子１２はタイヤ周方向Ｃに沿って列をなし、複数の列がタイヤ幅方向Ｗに沿って並ぶように配置されている。係合素子１２の形状は特に限定されるものではないが、例えば、図示のように先端部が枝分かれして面ファスナー１０の面方向に向かって延びるＴ字形状や鏃形状（２段鏃形状を含む）であると良い。面ファスナー１０の基材部１１には、該基材部１１を貫通する複数の小孔１３が形成されている。小孔１３の形状は特に限定されるものではないが、例えば、円形、楕円形、多角形とすることができる。このように構成される面ファスナー１０は係合素子１２がタイヤ内腔側に位置するようにして基材部１１がタイヤ内面Ｓに対して加硫接着される。   In the pneumatic tire, a hook-and-loop fastener 10 is installed in a region corresponding to the tread portion 1 of the tire inner surface S. As shown in FIG. 2, the hook-and-loop fastener 10 has a structure in which a plurality of engaging elements 12 are provided on one surface 11 a of a base material portion 11 having a sheet shape. The engaging elements 12 are arranged in a row along the tire circumferential direction C, and a plurality of rows are arranged along the tire width direction W. The shape of the engagement element 12 is not particularly limited. For example, as shown in the figure, the tip portion branches and a T-shape or hook shape (two-step hook shape extending in the surface direction of the hook-and-loop fastener 10). Included). A plurality of small holes 13 penetrating the base material part 11 are formed in the base material part 11 of the surface fastener 10. The shape of the small hole 13 is not particularly limited, and may be, for example, a circle, an ellipse, or a polygon. In the hook-and-loop fastener 10 configured in this manner, the base member 11 is vulcanized and bonded to the tire inner surface S so that the engaging element 12 is positioned on the tire lumen side.

一方、面ファスナー１０には、必要に応じて吸音材２０等の付属物が取り付けられる。例えば、ポリウレタンフォームからなる吸音材２０の場合、そのポリウレタンフォームの網目構造を利用することで吸音材２０をそのまま面ファスナー１０に対して係合させることができる。勿論、付属物には面ファスナー１０に対して係合可能な他の面ファスナーを取り付けるようにしても良い。付属物としては、吸音材２０の他に、温度センサやトランスポンダ等を挙げることができる。また、面ファスナー１０のタイヤ内面Ｓにおける設置場所は付属物の種類に応じて任意に選択することができる。   On the other hand, accessories such as a sound absorbing material 20 are attached to the hook-and-loop fastener 10 as necessary. For example, in the case of the sound absorbing material 20 made of polyurethane foam, the sound absorbing material 20 can be directly engaged with the hook-and-loop fastener 10 by utilizing the mesh structure of the polyurethane foam. Of course, you may make it attach the other hook-and-loop fastener which can be engaged with the hook-and-loop fastener 10 to an accessory. Examples of the accessory include a temperature sensor and a transponder in addition to the sound absorbing material 20. Moreover, the installation place in the tire inner surface S of the hook-and-loop fastener 10 can be arbitrarily selected according to the kind of attachment.

上述した空気入りタイヤでは、面ファスナー１０をタイヤ内面Ｓに加硫接着するにあたって、面ファスナー１０の基材部１１に小孔１３を設けることにより、これら小孔１３がタイヤ加硫時において通気路として機能するため、面ファスナー１０とタイヤ内面Ｓとの間における空気溜まりを抑制し、面ファスナー１０の接着性を高めることができる。しかも、面ファスナー１０の基材部１１に小孔１３を設けた場合、面ファスナー１０の接着面積が増大すると共に、図３に示すように、タイヤ内面Ｓに位置するインナーライナー層６（ゴム層）の一部が小孔１３を介して基材部１１の一方の面１１ａ側へ流れ出した状態で加硫されてアンカー効果を発揮するため、面ファスナー１０の接着性を更に向上することができる。   In the pneumatic tire described above, when the hook-and-loop fastener 10 is vulcanized and bonded to the tire inner surface S, the small holes 13 are provided in the base material portion 11 of the hook-and-loop fastener 10, so that these small holes 13 are air passages during tire vulcanization. Therefore, the accumulation of air between the hook-and-loop fastener 10 and the tire inner surface S can be suppressed, and the adhesiveness of the hook-and-loop fastener 10 can be enhanced. Moreover, when the small holes 13 are provided in the base material portion 11 of the hook-and-loop fastener 10, the bonding area of the hook-and-loop fastener 10 increases, and as shown in FIG. 3, the inner liner layer 6 (rubber layer) positioned on the tire inner surface S ) Is vulcanized in a state where it flows out to the one surface 11a side of the base material part 11 through the small holes 13 and exhibits an anchor effect, so that the adhesiveness of the hook-and-loop fastener 10 can be further improved. .

小孔１３の直径は０．１ｍｍ〜１．５ｍｍであり、基材部１１の単位面積１ｃｍ2当たりの小孔１３の個数は４〜１００個であると良い。このような寸法及び密度を選択することにより、空気溜まりの抑制効果と接着面積の増大効果とを十分に確保することができる。小孔１３の直径が０．１ｍｍ未満であるとタイヤ内面Ｓのゴムが小孔１３に入り難くなるため接着面積の増大効果及びアンカー効果を十分に得ることができず、逆に１．５ｍｍを超えるとタイヤ内面Ｓのゴムが小孔１３から多量に流れ出すため係合素子１２による係合効果の妨げになる。また、小孔１３の個数が４個／ｃｍ2未満であると接着面積の増大効果及びアンカー効果を十分に得ることができず、逆に１００個／ｃｍ2を超えると基材部１１の剛性が低下し、タイヤ加硫時に基材部１１に歪みを生じる恐れがある。 The diameter of the small holes 13 is 0.1 mm to 1.5 mm, and the number of small holes 13 per 1 cm 2 of unit area of the base material portion 11 is preferably 4 to 100. By selecting such dimensions and density, it is possible to sufficiently secure the effect of suppressing air accumulation and the effect of increasing the adhesion area. If the diameter of the small hole 13 is less than 0.1 mm, the rubber on the tire inner surface S becomes difficult to enter the small hole 13, so that the effect of increasing the adhesion area and the anchor effect cannot be sufficiently obtained. If it exceeds, rubber on the tire inner surface S flows out from the small holes 13 in a large amount, so that the engagement effect by the engagement element 12 is hindered. Further, it is impossible to obtain a sufficient increase effect and anchor effect of the adhesive area and the number of small holes 13 is less than 4 / cm 2, the stiffness of 100 to reverse / cm 2 by weight, the base portion 11 May decrease, and the base material portion 11 may be distorted during tire vulcanization.

また、上記空気入りタイヤにおいて、係合素子１２の基材表面からの高さは特に限定されるものではないが、例えば、０．５ｍｍ〜５．０ｍｍにすると良い。係合素子１２の高さを上記範囲に設定することにより、面ファスナー１０に対する吸音材２０等の付属物の取り付け強度を十分に確保することができる。   Moreover, in the said pneumatic tire, although the height from the base-material surface of the engagement element 12 is not specifically limited, For example, it is good to set it as 0.5 mm-5.0 mm. By setting the height of the engaging element 12 in the above range, it is possible to sufficiently secure the attachment strength of the accessory such as the sound absorbing material 20 to the hook-and-loop fastener 10.

図４は本発明で使用される面ファスナーの他の例を示すものである。図４において、図２と同一物には同一符号を付してその部分の詳細な説明は省略する。   FIG. 4 shows another example of the hook-and-loop fastener used in the present invention. 4, the same components as those in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted.

図４において、面ファスナー１０は、基材部１１の一方の面１１ａに複数本の係合素子１２を設ける一方で基材部１１の他方の面１１ｂに複数本のアンカー素子１４を設けた構造を有し、その基材部１１に複数の小孔１３が形成されている。アンカー素子１４はタイヤ周方向Ｃに沿って列をなし、複数の列がタイヤ幅方向Ｗに沿って並ぶように配置されている。アンカー素子１４の形状は特に限定されるものではないが、例えば、図示のように先端部が枝分かれして面ファスナー１０の面方向に向かって延びるＴ字形状であると良い。これらアンカー素子１４はタイヤ内面Ｓのインナーライナー層６に埋設されるため、面ファスナー１０のタイヤ内面Ｓに対する接着力を向上することができる。   In FIG. 4, the hook-and-loop fastener 10 has a structure in which a plurality of engagement elements 12 are provided on one surface 11 a of the base portion 11 and a plurality of anchor elements 14 are provided on the other surface 11 b of the base portion 11. A plurality of small holes 13 are formed in the base material part 11. The anchor elements 14 are arranged in a row along the tire circumferential direction C, and a plurality of rows are arranged along the tire width direction W. The shape of the anchor element 14 is not particularly limited. For example, the anchor element 14 may have a T-shape extending in the surface direction of the hook-and-loop fastener 10 by branching the tip portion as illustrated. Since these anchor elements 14 are embedded in the inner liner layer 6 on the tire inner surface S, the adhesive force of the hook-and-loop fastener 10 to the tire inner surface S can be improved.

図５は本発明で使用される面ファスナーの更に他の例を示し、図６は本発明で使用される面ファスナーに保護ゴム層を積層した状態を示し、図７は図５の面ファスナーをタイヤ内面に加硫接着した状態を示すものである。図５〜７において、図４と同一物には同一符号を付してその部分の詳細な説明は省略する。   5 shows still another example of the hook-and-loop fastener used in the present invention, FIG. 6 shows a state in which a protective rubber layer is laminated on the hook-and-loop fastener used in the present invention, and FIG. 7 shows the hook-and-loop fastener in FIG. It shows the state of vulcanization adhesion to the tire inner surface. 5-7, the same code | symbol is attached | subjected to FIG. 4 and an identical thing, and the detailed description of the part is abbreviate | omitted.

図５に示すように、面ファスナー１０の基材部１１には複数の小孔１３が形成されているが、その基材部１１の一方の面１１ａには小孔１３を覆うように庇部１５が形成されている。庇部１５は断面がＬ字形状をなし、その先端部が小孔１３の上方に突き出すように形成されている。庇部１５は基材部１１に形成された全ての小孔１３を覆うように配設することが望ましいが、一部の小孔１３だけを覆うように配設しても良い。   As shown in FIG. 5, a plurality of small holes 13 are formed in the base material portion 11 of the hook-and-loop fastener 10, but the flange portion is formed on one surface 11 a of the base material portion 11 so as to cover the small holes 13. 15 is formed. The flange portion 15 is L-shaped in cross section and is formed so that the tip portion protrudes above the small hole 13. The flange portion 15 is desirably disposed so as to cover all the small holes 13 formed in the base material portion 11, but may be disposed so as to cover only a part of the small holes 13.

図６に示すように、面ファスナー１０をタイヤ内面Ｓに加硫接着するにあたって、基材部１１の一方の面１１ａには保護ゴム層３０を積層することがある。このような保護ゴム層３０を設けた場合、タイヤ加硫時にブラダーＢの押圧により係合素子１２が潰れるのを防止することができる。ここで、小孔１３から流れ出したタイヤ内面Ｓのインナーライナー層６の一部（ゴム層）が保護ゴム層３０と一体化してしまうと、タイヤ加硫後に保護ゴム層３０を剥がして係合素子１２を露出させる作業が困難になる。   As shown in FIG. 6, when the surface fastener 10 is vulcanized and bonded to the tire inner surface S, a protective rubber layer 30 may be laminated on one surface 11 a of the base material portion 11. When such a protective rubber layer 30 is provided, it is possible to prevent the engagement element 12 from being crushed by pressing the bladder B during tire vulcanization. Here, if a part (rubber layer) of the inner liner layer 6 of the tire inner surface S that has flowed out from the small hole 13 is integrated with the protective rubber layer 30, the protective rubber layer 30 is peeled off after the tire is vulcanized and the engagement element. The operation of exposing 12 becomes difficult.

これに対して、面ファスナー１０の基材部１１の一方の面１１ａに小孔１３を覆うように庇部１５を設けた場合、図７に示すように、タイヤ内面Ｓのインナーライナー層６と保護ゴム層３０との接着面積を最小限に留め、保護ゴム層３０の剥離作業を簡単に行うことが可能になる。   On the other hand, when the collar portion 15 is provided so as to cover the small hole 13 on the one surface 11a of the base material portion 11 of the hook-and-loop fastener 10, as shown in FIG. The adhesion area with the protective rubber layer 30 can be minimized, and the peeling operation of the protective rubber layer 30 can be easily performed.

図８は本発明で使用される面ファスナーの更に他の例を示すものである。図８において、面ファスナー１０は、シート状をなす基材部１１の一方の面１１ａに複数本の係合素子１２を設ける一方で基材部１１の他方の面１１ｂに複数本のアンカー素子１４を設けた構造を有している。係合素子１２はタイヤ周方向Ｃに沿って列をなし、複数の列がタイヤ幅方向Ｗに沿って並ぶように配置されている。面ファスナー１０の基材部１１の他方の面１１ｂには、該基材部１１の面方向に延長する複数本の溝１６が形成されている。特に、溝１６はタイヤ幅方向に延長し、基材部１１のタイヤ幅方向に端部に連通していることが好ましい。これら溝１６はタイヤ幅方向に対して斜めに配向していても良く、或いは、模様を描くように湾曲していても良い。また、溝１６が分岐した形状を有する場合、少なくとも１本の溝１６を形成することができる。更に、基材部１１には複数の小孔１３が形成されている。このように基材部１１において小孔１３と溝１６とを同時に設けても良い。このように構成される面ファスナー１０は係合素子１２がタイヤ内腔側に位置するようにして基材部１１がタイヤ内面Ｓに対して加硫接着されるが、上記溝１６を備えた面１１ｂがタイヤ内面Ｓに対する接着面となる。   FIG. 8 shows still another example of the hook-and-loop fastener used in the present invention. In FIG. 8, the hook-and-loop fastener 10 is provided with a plurality of engaging elements 12 on one surface 11 a of a base material portion 11 having a sheet shape, and a plurality of anchor elements 14 on the other surface 11 b of the base material portion 11. It has the structure which provided. The engaging elements 12 are arranged in a row along the tire circumferential direction C, and a plurality of rows are arranged along the tire width direction W. A plurality of grooves 16 extending in the surface direction of the base material portion 11 are formed on the other surface 11 b of the base material portion 11 of the surface fastener 10. In particular, it is preferable that the groove 16 extends in the tire width direction and communicates with an end portion in the tire width direction of the base material portion 11. These grooves 16 may be oriented obliquely with respect to the tire width direction, or may be curved to draw a pattern. Further, when the groove 16 has a branched shape, at least one groove 16 can be formed. Furthermore, a plurality of small holes 13 are formed in the base material portion 11. Thus, the small holes 13 and the grooves 16 may be provided in the base material portion 11 at the same time. The hook-and-loop fastener 10 configured in this manner is bonded to the tire inner surface S with the engaging element 12 positioned on the tire lumen side, and is provided with the groove 16. 11b becomes an adhesion surface to the tire inner surface S.

この場合も、面ファスナー１０をタイヤ内面Ｓに加硫接着するにあたって、面ファスナー１０の基材部１１に溝１６を設けることにより、これら溝１６が通気路として機能するため、面ファスナー１０とタイヤ内面Ｓとの間における空気溜まりを抑制し、面ファスナー１０の接着性を高めることができる。しかも、面ファスナー１０の基材部１１に溝１６を設けた場合、面ファスナー１０の接着面積が増大するため、その接着面積が増大が接着性の向上に寄与する。   Also in this case, when the surface fastener 10 is vulcanized and bonded to the tire inner surface S, the grooves 16 function as an air passage by providing the base material portion 11 of the surface fastener 10 so that the surface fastener 10 and the tire. Air accumulation between the inner surface S and the inner surface S can be suppressed, and the adhesiveness of the surface fastener 10 can be improved. In addition, when the groove 16 is provided in the base material portion 11 of the hook-and-loop fastener 10, the bonding area of the hook-and-loop fastener 10 increases, and thus the increase in the bonding area contributes to the improvement of adhesiveness.

溝１６の深さは０．０５ｍｍ〜０．１５ｍｍであり、溝１６の幅は０．０５ｍｍ〜１．０ｍｍであると良い。このような寸法を選択することにより、空気溜まりの抑制効果と接着面積の増大効果とを十分に確保することができる。溝１６の深さが０．０５ｍｍ未満であると接着面積の増大効果を十分に得ることができず、逆に０．１５ｍｍを超えると溝１６自体が空気溜まりを誘発し易くなる。一方、溝１６の幅が０．０５ｍｍ未満であると接着面積の増大効果を十分に得ることができず、逆に１．０ｍｍを超えると溝１６自体が空気溜まりを誘発し易くなる。   The depth of the groove 16 is 0.05 mm to 0.15 mm, and the width of the groove 16 is preferably 0.05 mm to 1.0 mm. By selecting such dimensions, it is possible to sufficiently ensure the effect of suppressing air accumulation and the effect of increasing the adhesion area. If the depth of the groove 16 is less than 0.05 mm, the effect of increasing the bonding area cannot be obtained sufficiently. Conversely, if the depth exceeds 0.15 mm, the groove 16 itself tends to induce air retention. On the other hand, if the width of the groove 16 is less than 0.05 mm, the effect of increasing the adhesion area cannot be sufficiently obtained. Conversely, if the width exceeds 1.0 mm, the groove 16 itself easily induces air retention.

上述した面ファスナー１０は、例えば、ナイロン、ポリエステル、ポリエチレン、ポリプロピレン、ポリ塩化ビニル、ポリスチレン、アクリロニトリル／スチレン、アクリロニトリル／ブタジエン／スチレン、ポリエチレンテレフタレート等の熱可塑性樹脂から成形することができる。例えば、基材部１１及び係合素子１２をタイヤ周方向に向かって見たときの側面視形状に相当する開口部を備えた押出成形機から熱可塑性樹脂を押出し、係合素子１２に相当する突条部分にスリットを間欠的に形成し、その押出物を延伸して係合素子１２の相互間隔を広げることにより、基材部１１の一方の面１１ａに多数本の独立した係合素子１２を備えた面ファスナー１０を成形することができる。また、アンカー素子１４も係合素子１２と同様に基材部１１に対して一体的に形成することができる。小孔１３及び溝１６は、押出直後の押出物を塑性変形させることで形成しても良く、或いは、押出物が硬化した後で機械加工により形成しても良い。   The surface fastener 10 described above can be molded from a thermoplastic resin such as nylon, polyester, polyethylene, polypropylene, polyvinyl chloride, polystyrene, acrylonitrile / styrene, acrylonitrile / butadiene / styrene, or polyethylene terephthalate. For example, a thermoplastic resin is extruded from an extruder having an opening corresponding to a side view shape when the base material portion 11 and the engagement element 12 are viewed in the tire circumferential direction, and corresponds to the engagement element 12. A plurality of independent engagement elements 12 are formed on one surface 11a of the base member 11 by intermittently forming slits in the protrusions and extending the extrudate to widen the mutual spacing of the engagement elements 12. The hook-and-loop fastener 10 provided with can be molded. Also, the anchor element 14 can be formed integrally with the base material portion 11 similarly to the engaging element 12. The small holes 13 and the grooves 16 may be formed by plastic deformation of the extrudate immediately after extrusion, or may be formed by machining after the extrudate is cured.

タイヤサイズ２１５／６０Ｒ１６で、タイヤ内面におけるトレッド部に対応する領域に面ファスナーを設置し、この面ファスナーをタイヤ内面に対して加硫接着した空気入りタイヤにおいて、面ファスナーの基材部に小孔又は溝を設け、面ファスナーの構造を表１のように種々異ならせた実施例１〜４のタイヤを製作した。また、比較のため、基材部の一方の面に複数本の係合素子を設ける一方で基材部に小孔又は溝を設けないようにした比較例１のタイヤを製作した。   In a pneumatic tire having a tire size 215 / 60R16 and having a surface fastener installed in a region corresponding to the tread portion on the inner surface of the tire and vulcanized and bonded to the inner surface of the tire, a small hole is formed in the base portion of the surface fastener. Alternatively, tires of Examples 1 to 4 in which grooves were provided and the structure of the hook-and-loop fastener was varied as shown in Table 1 were produced. For comparison, a tire of Comparative Example 1 was manufactured in which a plurality of engagement elements were provided on one surface of the base material portion, but no small holes or grooves were provided in the base material portion.

これら試験タイヤについて、下記の評価方法により、空気溜まりの抑制効果及び面ファスナーの接着性を評価し、その結果を表１に併せて示した。   About these test tires, the following evaluation method evaluated the air pocket suppression effect and the adhesiveness of the hook-and-loop fastener, and the results are also shown in Table 1.

空気溜まりの抑制効果：
加硫後の試験タイヤにおいてタイヤ内面に接着されている面ファスナーを観察し、面ファスナーとタイヤ内面との間における空気溜まりの有無を調べた。評価結果は、直径２ｍｍ以上で目視により識別可能な空気溜まりがある場合を「×」で示し、直径２ｍｍ以上で目視により識別可能な空気溜まりがない場合を「○」で示した。 Suppression effect of air accumulation:
In the test tire after vulcanization, the surface fastener adhered to the tire inner surface was observed, and the presence or absence of air accumulation between the surface fastener and the tire inner surface was examined. The evaluation results are indicated by “x” when there is an air reservoir that can be visually identified with a diameter of 2 mm or more, and with “◯” when there is no air reservoir that can be visually identified with a diameter of 2 mm or more.

面ファスナーの接着性：
加硫後の試験タイヤを解体して面ファスナーの設置部分を切り出し、面ファスナーとインナーライナー層とカーカス層との積層体からなる試験片を作製し、この試験片のタイヤ部分（インナーライナー層、カーカス層）と面ファスナーとの間の接着力をＪＩＳ Ｋ６２５６−１に準拠した試験法にて測定した。評価結果は、比較例１を１００とする指数にて示した。この指数値が大きいほど接着性が良好であることを意味する。 Surface fastener adhesion:
The test tire after vulcanization is disassembled and the installation part of the surface fastener is cut out to prepare a test piece composed of a laminate of the surface fastener, the inner liner layer, and the carcass layer, and the tire part (inner liner layer, The adhesive force between the carcass layer) and the hook-and-loop fastener was measured by a test method based on JIS K6256-1. The evaluation results are shown as an index with Comparative Example 1 as 100. A larger index value means better adhesion.

Figure 0005750521
Figure 0005750521

表１から判るように、実施例１〜４のタイヤにおいては、面ファスナーとタイヤ内面との間に空気溜まりが生じておらず、しかも面ファスナーの接着性が良好であった。これに対して、比較例１のタイヤでは、面ファスナーとタイヤ内面との間に空気溜まりが存在していた。   As can be seen from Table 1, in the tires of Examples 1 to 4, there was no air accumulation between the hook-and-loop fastener and the tire inner surface, and the adhesion of the hook-and-loop fastener was good. On the other hand, in the tire of Comparative Example 1, an air pocket existed between the hook-and-loop fastener and the tire inner surface.

１ トレッド部
２ サイドウォール部
３ ビード部
４ カーカス層
５ ビードコア
６ インナーライナー層
７ ベルト層
１０ 面ファスナー
１１ａ 一方の面
１１ｂ 他方の面
１２ 係合素子
１３ 小孔
１４ アンカー素子
１５ 庇部
１６ 溝
Ｓ タイヤ内面 DESCRIPTION OF SYMBOLS 1 Tread part 2 Side wall part 3 Bead part 4 Carcass layer 5 Bead core 6 Inner liner layer 7 Belt layer 10 Surface fastener 11a One side 11b The other side 12 Engagement element 13 Small hole 14 Anchor element 15 Grow part 16 Groove S Tire Inside

Claims (5)

基材部の一方の面に複数本の係合素子を設けた面ファスナーを有し、該面ファスナーの基材部を前記係合素子がタイヤ内腔側に位置するようにタイヤ内面に接着した空気入りタイヤにおいて、前記係合素子の高さが０．５ｍｍ〜５．０ｍｍであり、前記係合素子の形状がＴ字形状又は鏃形状であると共に、前記面ファスナーの基材部に該基材部を貫通する複数の小孔を設け、該小孔の直径が０．１ｍｍ〜１．５ｍｍであり、１ｃｍ2当たりの前記小孔の個数が４〜１００個であり、前記タイヤ内面に位置するゴム層の一部が前記小孔を介して前記基材部の一方の面側へ流出した状態で加硫されたことを特徴とする空気入りタイヤ。 A hook-and-loop fastener having a plurality of engaging elements on one surface of the base member is provided, and the base member of the hook-and-loop fastener is bonded to the tire inner surface so that the engaging element is located on the tire lumen side. In the pneumatic tire, the height of the engaging element is 0.5 mm to 5.0 mm, the shape of the engaging element is a T-shape or a hook shape, and the base portion of the hook-and-loop fastener has the base. A plurality of small holes penetrating the material portion are provided, the diameter of the small holes is 0.1 mm to 1.5 mm, and the number of the small holes per 1 cm 2 is 4 to 100, which is located on the inner surface of the tire. A pneumatic tire characterized in that a part of the rubber layer is vulcanized in a state of flowing out to one surface side of the base material portion through the small holes. 前記面ファスナーの基材部の一方の面に前記小孔を覆うように庇部を設けたことを特徴とする請求項１に記載の空気入りタイヤ。   The pneumatic tire according to claim 1, wherein a flange portion is provided on one surface of the base portion of the hook-and-loop fastener so as to cover the small hole. 前記面ファスナーの基材部の他方の面に該基材部の面方向に延長する少なくとも１本の溝を設けたことを特徴とする請求項１又は２に記載の空気入りタイヤ。   The pneumatic tire according to claim 1 or 2, wherein at least one groove extending in a surface direction of the base material portion is provided on the other surface of the base material portion of the hook-and-loop fastener. 前記溝の深さが０．０５ｍｍ〜０．１５ｍｍであり、前記溝の幅が０．０５ｍｍ〜１．０ｍｍであることを特徴とする請求項３に記載の空気入りタイヤ。   The pneumatic tire according to claim 3, wherein a depth of the groove is 0.05 mm to 0.15 mm, and a width of the groove is 0.05 mm to 1.0 mm. 前記面ファスナーの基材部の他方の面に複数本のアンカー素子を設けたことを特徴とする請求項１〜４のいずれかに記載の空気入りタイヤ。   The pneumatic tire according to claim 1, wherein a plurality of anchor elements are provided on the other surface of the base portion of the hook-and-loop fastener.
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