JP2589650B2 - Molding method of foam polyurethane sole - Google Patents
Molding method of foam polyurethane soleInfo
- Publication number
- JP2589650B2 JP2589650B2 JP5321156A JP32115693A JP2589650B2 JP 2589650 B2 JP2589650 B2 JP 2589650B2 JP 5321156 A JP5321156 A JP 5321156A JP 32115693 A JP32115693 A JP 32115693A JP 2589650 B2 JP2589650 B2 JP 2589650B2
- Authority
- JP
- Japan
- Prior art keywords
- insert
- flange
- insert piece
- shoe sole
- sole body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、発泡ポリウレタン靴
底の成形法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for molding a foamed polyurethane shoe sole.
【０００２】[0002]
【従来の技術】従来、特開昭５６−１３９０１号に示す
ように、外周縁に鍔を形成した加硫ゴム製のインサ−ト
片を、その鍔をインサ−ト室の区画壁の上面に密着した
状態でモ−ルドキャビティのインサ−ト室にセットし
て、モ−ルドキャビティに発泡性の液状ポリウレタンを
導入して靴底本体を成形するとともに、靴底本体にイン
サ−ト片を接着一体化する発泡ポリウレタン靴底の成形
法が提案されている。しかしながらこの方法による場
合、発泡ポリウレタン靴底本体成形時に、インサ−ト片
の鍔がインサ−ト室の区画壁の上面に密着されているた
め、鍔部を靴底本体中に完全に埋設できず、靴底使用時
に発泡ポリウレタン靴底本体とインサ−ト片との屈曲差
によって、鍔部からインサ−ト片が剥離されたり、鍔部
付近から発泡ポリウレタン靴底本体が亀裂したりして、
靴底の耐久性を著しく低下させる欠点があった。2. Description of the Related Art Conventionally, as shown in JP-A-56-13901, an insert piece made of vulcanized rubber having a flange formed on the outer peripheral edge is attached to the upper surface of a partition wall of an insert chamber. It is set in the insert chamber of the mold cavity in a close contact state, foamable liquid polyurethane is introduced into the mold cavity to form the sole body, and the insert piece is adhered to the sole body. A method of forming a foamed polyurethane shoe sole to be integrated has been proposed. However, according to this method, when the foamed polyurethane sole body is formed, the flange of the insert piece is in close contact with the upper surface of the partition wall of the insert chamber, so that the flange portion cannot be completely embedded in the sole body of the shoe. When the shoe sole is used, the insert piece is peeled off from the flange due to a bending difference between the foam polyurethane sole body and the insert piece, or the foam polyurethane shoe sole body is cracked from near the flange,
There was a drawback that the durability of the shoe sole was significantly reduced.
【０００３】[0003]
【発明の解決しようとする課題】この発明は、簡単な方
法によって、インサ−ト片と靴底本体との接着性に優
れ、耐屈曲性の良好な耐久性に優れた発泡ポリウレタン
靴底を提供しようとするものである。DISCLOSURE OF THE INVENTION The present invention provides a foamed polyurethane shoe sole which is excellent in adhesion between an insert piece and a shoe sole body, excellent in bending resistance and excellent in durability by a simple method. What you want to do.
【０００４】[0004]
【課題を解決するための手段】以下この発明の実施状態
を示す図面によって説明すれば、この発明は立上がり部
１１を周設し、その外周縁に鍔１１１を形成した上面に
くぼみ部１２を有する加硫ゴム製のインサ−ト片１を、
その鍔１１１をインサ−ト室の区画突出壁０１１の上方
に浮かせた状態でモ−ルドキャビティのインサ−ト室０
１にセットした後、このモ−ルドキャビティ０に発泡性
の液状ポリウレタンを導入して、これを鍔１１１の上下
並びにインサ−ト片１の上面のくぼみ部１２に流入させ
て靴底本体２を一体に成形するとともに、靴底本体２と
インサ−ト片１を接着することを特徴とする発泡ポリウ
レタン靴底の成形法を発明の要旨とするものである。The present invention will now be described with reference to the drawings showing an embodiment of the present invention. In the present invention, a rising portion 11 is provided around a periphery, and a flange 111 is formed on an outer peripheral edge thereof. Insert piece 1 made of vulcanized rubber
In a state where the flange 111 is floated above the partition projecting wall 011 of the insert chamber, the insert chamber 0 of the mold cavity is
After setting to 1, the foamable liquid polyurethane is introduced into the mold cavity 0, and flows into the upper and lower portions of the flange 111 and the concave portion 12 on the upper surface of the insert piece 1 so that the shoe sole body 2 is moved. The gist of the present invention is a method of forming a foamed polyurethane shoe sole, which is integrally formed and the sole piece 2 and the insert piece 1 are bonded together.
【０００５】この発明においてインサ−ト片１は、天然
ゴム、合成ゴムまたはこれらの混合物を主成分として加
硫成形されており、必要によって鍔１１１または立上が
り部１１上辺に適宜数の貫通孔１１１１，１１１１を設
けておけば、靴底本体成形時に液状ポリウレタンが該孔
１１１１，１１１１…に流入して、鍔１１１の上下また
は立上がり部１１の上辺で靴底本体２が投錨一体化され
るため、インサ−ト片１と靴底本体２の接着強度をより
一層強固なものとすることができる。そしてインサ−ト
片１の上面に天然ゴム、合成ゴム、ポリウレタン系の有
機溶剤型の接着剤を塗布乾燥して、これを接着層１０モ
−ルドキャビティ０にセットするものであるが、インサ
−ト片１の上面に接着層１０を塗布形成する前にインサ
−ト片１の上面をバフ等粗面加工または塩素等のハロゲ
ン化物質で処理しておけば、接着層１０を介してインサ
−ト片１と靴底本体２との接着性をより強固なものとす
ることができる。またこの発明において、インサ−ト片
１の鍔１１１部と立上がり部１１と接地部外周辺１３の
肉厚をほぼ同一に形成しておけば、インサ−ト片１自体
の肉厚差による屈曲差が回避されるので、従来これらの
部分に沿って頻発していた靴底本体２の亀裂が完全に回
避される。In the present invention, the insert piece 1 is vulcanized and formed by using natural rubber, synthetic rubber or a mixture thereof as a main component. When the sole 1111 is provided, the liquid polyurethane flows into the holes 1111, 1111... When the sole body is formed, and the sole body 2 is anchored and integrated at the upper and lower sides of the flange 111 or at the upper side of the rising portion 11. -It is possible to further increase the adhesive strength between the shoe piece 1 and the sole body 2. A natural rubber, synthetic rubber or polyurethane organic solvent type adhesive is applied to the upper surface of the insert piece 1 and dried, and the adhesive is set in the mold cavity 0 of the adhesive layer 10. If the upper surface of the insert piece 1 is roughened by buffing or the like and treated with a halogenated substance such as chlorine before the adhesive layer 10 is formed on the upper surface of the insert piece 1, the insert through the adhesive layer 10 is formed. The adhesiveness between the toe piece 1 and the sole body 2 can be made stronger. In the present invention, if the thickness of the flange 111, the rising portion 11, and the outer periphery 13 of the grounding portion of the insert piece 1 are made substantially the same, the bending difference due to the thickness difference of the insert piece 1 itself. Is avoided, so that the cracks in the sole body 2 which frequently occur along these portions in the past are completely avoided.
【０００６】この発明に使用される発泡性のポリウレタ
ンとしては、汎用のポリエ−テル系ポリオ−ル、ポリエ
ステル系ポリオ−ルは勿論これらの誘導体やアミン系ポ
リオ−ルあるいはポリエ−テルエステル系ポリオ−ル又
はこれらの誘導体からなるポリオ−ルと公知のイソシア
ネ−ト化合物の反応によって得られる公知の発泡性の液
ポリウレタンが使用される。そしてこれらの発泡性の液
状ポリウレタンは、射出成形法または注型法によってイ
ンサ−ト片１をセットしたモ−ルドキャビティ０に導入
されて常法によって発泡硬化されて靴底本体２が形成さ
れると共に、インサ−ト片１と接着一体化されるもので
あるが、発泡硬化される際、上型として胛被を吊込んだ
ラストを使用すれば靴底本体２とインサ−ト片１からな
る靴底を靴底本体成形時に胛被に接着一体化できるので
便利である。The foamable polyurethane used in the present invention includes general-purpose polyether-based polyols and polyester-based polyols, as well as derivatives thereof, amine-based polyols and polyetherester-based polyols. A known foamable liquid polyurethane obtained by the reaction of a polyol consisting of a polyester or a derivative thereof with a known isocyanate compound is used. These foamable liquid polyurethanes are introduced into a mold cavity 0 in which the insert pieces 1 are set by an injection molding method or a casting method, and foamed and hardened by a conventional method to form a shoe sole body 2. At the same time, it is bonded and integrated with the insert piece 1, but when it is foamed and hardened, the shoe sole body 2 and the insert piece 1 are used if the last with the upper is suspended as the upper die. This is convenient because the sole of the shoe can be bonded and integrated with the shell when molding the sole body.
【０００７】[0007]
【発明の作用効果】この発明は以上のように立上がり部
１１を周設し、その外周縁に鍔１１１を形成した上面に
くぼみ部１２を有する加硫ゴム製のインサ−ト片１を、
鍔１１１をインサ−ト室の区画突出壁０１１の上方に浮
かせた状態でモ−ルドキャビティのインサ−ト室０１に
セットし、常法によってモ−ルドキャビティ０に発泡性
の液状ポリウレタンを導入すれば、液状のポリウレタン
が鍔１１１の上下で鍔１１１を完全に取り囲み、さらに
インサ−ト片の上面のくぼみ部１２に連続して流入され
るので、立上がり部１１の上辺並びに鍔１１１が完全に
靴底本体中に埋設される。従って簡単な方法によって、
インサ−ト片１と靴底本体２との接着性に優れしかもイ
ンサ−ト片１の上面のくぼみ部１２によってインサ−ト
片１を薄肉に形成でき、インサ−ト片１と靴底本体２と
の屈曲差を最小限に設定でき、耐屈曲性の良好な耐久性
に優れた発泡ポリウレタン靴底を提供できる。According to the present invention, the insert piece 1 made of vulcanized rubber having the rising portion 11 provided as described above and the concave portion 12 formed on the upper surface with the flange 111 formed on the outer peripheral edge thereof is provided.
The flange 111 is set above the insert chamber 01 of the mold cavity while floating above the partition projecting wall 011 of the insert chamber, and foamable liquid polyurethane is introduced into the mold cavity 0 by a conventional method. For example, since the liquid polyurethane completely surrounds the flange 111 above and below the flange 111 and continuously flows into the concave portion 12 on the upper surface of the insert piece, the upper side of the rising portion 11 and the flange 111 are completely removed. It is embedded in the bottom body. So in a simple way,
The insert piece 1 and the sole body 2 are excellent in the adhesiveness between the insert piece 1 and the sole body 2 and can be formed thin by the recess 12 on the upper surface of the insert piece 1. Can be set to a minimum, and a foamed polyurethane shoe sole having excellent bending resistance and excellent durability can be provided.
【図１】この発明の発泡ポリウレタン靴底の成形法を示
す要部断面図である。FIG. 1 is a sectional view showing a main part of a method for molding a foamed polyurethane shoe sole according to the present invention.
０．モ−ルドキャビティ ０１．インサ−ト
室 ０１１．突出壁 １．インサ−ト片 １１…立上がり部 １１１…鍔 １２…くぼみ部 ２．靴底本体0. Mold cavity 01. Insert room 011. Projecting wall 1. Insert piece 11: rising portion 111: rim 12: hollow portion 2. Shoe sole body
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 31:50 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location B29L 31:50
Claims (1)
１１１を形成した上面にくぼみ部１２を有する加硫ゴム
製のインサ−ト片１を、その鍔１１１をインサ−ト室の
区画突出壁０１１の上方に浮かせた状態でモ−ルドキャ
ビティのインサ−ト室０１にセットした後、このモ−ル
ドキャビティ０に発泡性の液状ポリウレタンを導入し
て、これを鍔１１１の上下並びにインサ−ト片１の上面
のくぼみ部１２に流入させて靴底本体２を一体に成形す
るとともに、靴底本体２とインサ−ト片１を接着するこ
とを特徴とする発泡ポリウレタン靴底の成形法。1. A vulcanized rubber insert 1 having a rising portion 11 and a recessed portion 12 on the upper surface with a flange 111 formed on the outer peripheral edge thereof. After being set in the insert chamber 01 of the mold cavity while being floated above the partition projecting wall 011, foamable liquid polyurethane is introduced into the mold cavity 0, and this is placed above and below the flange 111. A foamed polyurethane shoe sole, characterized in that the shoe sole body 2 is integrally formed by flowing into the recess 12 on the upper surface of the insert piece 1 and the shoe sole body 2 and the insert piece 1 are bonded. Law.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5321156A JP2589650B2 (en) | 1993-11-27 | 1993-11-27 | Molding method of foam polyurethane sole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5321156A JP2589650B2 (en) | 1993-11-27 | 1993-11-27 | Molding method of foam polyurethane sole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07148865A JPH07148865A (en) | 1995-06-13 |
| JP2589650B2 true JP2589650B2 (en) | 1997-03-12 |
Family
ID=18129434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5321156A Expired - Lifetime JP2589650B2 (en) | 1993-11-27 | 1993-11-27 | Molding method of foam polyurethane sole |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2589650B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722605B (en) * | 2009-11-13 | 2012-11-14 | 浙江工业大学 | Method for embedding radio-frequency tag into silicon rubber label |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100256180B1 (en) * | 1997-08-29 | 2000-05-15 | 박수관 | Injection foaming product and manufacturing method thereof |
| US6699028B2 (en) * | 2001-10-16 | 2004-03-02 | Schering-Plough Healthcare Products, Inc. | Insert molding apparatus |
-
1993
- 1993-11-27 JP JP5321156A patent/JP2589650B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722605B (en) * | 2009-11-13 | 2012-11-14 | 浙江工业大学 | Method for embedding radio-frequency tag into silicon rubber label |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07148865A (en) | 1995-06-13 |
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