JP2003225947A - Heating element for fusion-bonding synthetic resin and method for manufacturing heating element - Google Patents
Heating element for fusion-bonding synthetic resin and method for manufacturing heating elementInfo
- Publication number
- JP2003225947A JP2003225947A JP2002026774A JP2002026774A JP2003225947A JP 2003225947 A JP2003225947 A JP 2003225947A JP 2002026774 A JP2002026774 A JP 2002026774A JP 2002026774 A JP2002026774 A JP 2002026774A JP 2003225947 A JP2003225947 A JP 2003225947A
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- synthetic resin
- melting point
- fusion
- fusing
- 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.)
- Pending
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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
- B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
- B29C65/3408—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
- B29C65/3412—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements comprising fillers
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
- B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
-
- 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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- 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
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Surface Heating Bodies (AREA)
- Resistance Heating (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、合成樹脂融着用発
熱体同士、又は該合成樹脂融着用発熱体と他の合成樹脂
材料とを融着させるための合成樹脂融着用発熱体および
その製造方法、合成樹脂融着用発熱体同士、又は該合成
樹脂融着用発熱体と他の合成樹脂材料との融着方法およ
び同方法で融着されてなる成形体に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin fusing heating element for fusing synthetic resin fusing heating elements, or a synthetic resin fusing heating element and another synthetic resin material, and a method for producing the same. The present invention relates to a method for fusing a heating element for fusing synthetic resin, or a fusing element for fusing the synthetic resin and another synthetic resin material, and a molded article fused by the same method.
【０００２】[0002]
【従来の技術】合成樹脂板等の複数の合成樹脂成形品を
一体に接合するには、一般に、接着剤、ねじ、或いはリ
ベットなどの固着部材を用いる方法の他、合成樹脂成形
品の一部を熱により溶融させて合成樹脂成形品を一体に
接合する熱融着法が広く採用されている。この熱融着法
は、互いに熱融着可能な合成樹脂成形品同士を接合する
場合、高い接合強度が得られるので、特に有効である。
ところが、このような熱融着法を実際に実施するには、
超音波ウエルディング装置や高周波ウエルディング装置
などの高価な設備を用いなければならないため、コスト
面での問題があった。また、合成樹脂成形品の中に、鉄
・ニッケル、鉄・クロム、ニッケル・クロム等の通電発
熱量が大きい合金からなる線体を通電発熱体として内包
させ、これに通電することにより、同種合成樹脂からな
る形状物と融着させる方法が管継手の分野等で広く用い
られているが、この方法は樹脂中に通電発熱体の線体を
内包した構造であるため、基材の合成樹脂が均一に溶融
し難く、また、被着体との接触面積が小さいこともあっ
て融着効率が悪いという問題があった。さらに、管継手
の場合は、上記通電発熱体をコイル状にして電気絶縁性
の大きい合成樹脂の中に埋め込むという複雑で手間のか
かる作業を要するという問題があった。2. Description of the Related Art Generally, in order to integrally join a plurality of synthetic resin molded products such as synthetic resin plates, a fixing member such as an adhesive, a screw, or a rivet is used, or a part of the synthetic resin molded product. A heat fusion method is widely adopted in which a synthetic resin molded product is integrally joined by melting the resin by heat. This heat-sealing method is particularly effective when joining synthetic resin molded articles which can be heat-sealed to each other, because high joint strength can be obtained.
However, in order to actually carry out such a heat fusion method,
Since expensive equipment such as ultrasonic welding equipment and high-frequency welding equipment must be used, there is a problem in terms of cost. In addition, a synthetic resin molded product contains a wire made of an alloy of iron / nickel, iron / chromium, nickel / chromium, etc., which has a large amount of heat generated by energization as an energized heating element, and by energizing this, the same kind of synthesis is performed. A method of fusing with a shape made of resin is widely used in the field of pipe fittings, etc., but since this method has a structure in which a wire of an electric heating element is included in the resin, the synthetic resin of the base material is There is a problem that it is difficult to melt uniformly and that the area of contact with the adherend is small, resulting in poor fusion efficiency. Further, in the case of a pipe joint, there is a problem that a complicated and laborious work of forming the coil of the electric heating element and burying it in a synthetic resin having a high electric insulation is required.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、上記
従来の欠点を除去し、低コストで融着性能の優れた合成
樹脂融着用発熱体とその製造方法、融着方法およびこの
合成樹脂融着用発熱体同士又は他の材料と融着させた成
形体を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned conventional drawbacks, a synthetic resin fusing heating element which is low in cost and has excellent fusing performance, a method for producing the same, a fusing method, and this synthetic resin. An object of the present invention is to provide a molded body in which heat generating elements for fusion are fused with each other or with another material.
【０００４】[0004]
【課題を解決するための手段】本発明者は上記課題を解
決すべく鋭意検討した結果、本発明を完成するに至っっ
た。即ち本発明の要旨は、（ａ）熱可塑性樹脂又は熱可
塑性エラストマー及びこれらの混合物を基質とし、これ
に（ｂ）融点が３００℃以下の低融点金属、及び（ｃ）
金属粉末を混合してなる合成樹脂融着用発熱体にある。
また、上記（ａ）、（ｂ）、（ｃ）成分を混合した後、
溶融・混練して成形する合成樹脂融着用発熱体の製造方
法であって、合成樹脂融着用発熱体の成形温度を、この
材料中に含まれる（ａ）熱可塑性樹脂又は熱可塑性エラ
ストマー及びこれらの混合物の融点以上で、かつ前記
（ｂ）低融点金属の融点より１５℃高い温度以下として
成形することを特徴とする合成樹脂融着用発熱体の製造
方法にある。さらに、前記合成樹脂融着用発熱体を通電
によって発熱させ、その熱により熱可塑性樹脂又は熱可
塑性エラストマー及びこれらの混合物を溶融させ、合成
樹脂融着用発熱体同士、又は該合成樹脂融着用発熱体と
他の合成樹脂材料とを融着させることを特徴とする融着
方法、さらに同方法で融着されてなる成形体にある。As a result of intensive studies to solve the above problems, the present inventor has completed the present invention. That is, the gist of the present invention is to use (a) a thermoplastic resin or a thermoplastic elastomer and a mixture thereof as a substrate, and (b) a low melting point metal having a melting point of 300 ° C. or less, and (c)
A heating element for fusing synthetic resin, which is made by mixing metal powder.
In addition, after mixing the components (a), (b) and (c),
A method for producing a heating element for fusing synthetic resin, which comprises melting and kneading and molding, wherein the molding temperature of the heating element for fusing synthetic resin is (a) a thermoplastic resin or thermoplastic elastomer and In the method for producing a heating element for fusing synthetic resin, the molding is performed at a temperature not lower than the melting point of the mixture and not higher than the melting point of the low melting point metal (b) by 15 ° C. or lower. Furthermore, the heating element for fusing the synthetic resin is heated by energization, and the heat is used to melt the thermoplastic resin or the thermoplastic elastomer and a mixture thereof, and the heating elements for fusing the synthetic resin, or the heating element for fusing the synthetic resin. The present invention is a fusion-bonding method characterized by fusion-bonding with another synthetic resin material, and a molded body fused by the same method.
【０００５】本発明の好ましい実施態様としては、下記
が挙げられる。（ａ）熱可塑性樹脂又は熱可塑性エラス
トマー及びこれらの混合物が成形品の２０〜８０容量
％、（ｂ）及び（ｃ）を合わせた金属成分中の（ｃ）金
属粉末の割合が１０〜３０容量％の範囲であることを特
徴とする合成樹脂融着用発熱体。（ｂ）成分の低融点金
属が、Ｐｂ／Ｓｎ、Ｐｂ／Ｓｎ／Ｂｉ、Ｐｂ／Ｓｎ／Ａ
ｇ、 Ｐｂ／Ａｇ、 Ｓｎ／Ａｇ、 Ｓｎ／Ｂｉ、Ｓｎ／Ｃ
ｕ、Ｓｎ／Ｚｎ系から選ばれた低融点合金からなること
を特徴とする合成樹脂融着用発熱体。（ｄ）成分の金属
粉末がＣｕ、Ｎｉ、Ａｌ、Ｃｒ及びそれらの合金粉末か
らなり、その平均粒径が１〜５０μｍの範囲であること
を特徴とする合成樹脂融着用発熱体。Preferred embodiments of the present invention include the following. (A) 20 to 80% by volume of the thermoplastic resin or the thermoplastic elastomer and a mixture thereof in the molded product, and the proportion of the (c) metal powder in the metal components of (b) and (c) is 10 to 30% by volume. A heating element for fusing synthetic resin, characterized by being in the range of%. The low melting point metal of the component (b) is Pb / Sn, Pb / Sn / Bi, Pb / Sn / A.
g, Pb / Ag, Sn / Ag, Sn / Bi, Sn / C
A heating element for fusing synthetic resin, comprising a low melting point alloy selected from u and Sn / Zn. A heating element for fusing synthetic resin, characterized in that the metal powder of component (d) is composed of Cu, Ni, Al, Cr and alloy powders thereof, and has an average particle size in the range of 1 to 50 μm.
【０００６】[0006]
【発明の実施の形態】以下、本発明を詳しく説明する。
本発明の合成樹脂融着用発熱体は、その材料が（ａ）熱
可塑性樹脂又は熱可塑性エラストマー及びこれらの混合
物、（ｂ）融点が３００℃以下の低融点金属、及び
（ｃ）金属粉末の混合物（以下、「混合材」という）か
らなることに特徴がある。このように（ａ）熱可塑性樹
脂又は熱可塑性エラストマー及びこれらの混合物と発熱
体としての機能を付与するための金属成分を特定の組合
せとすることにより、発熱特性と他の特性をバランス良
く付与できることを見出したものである。BEST MODE FOR CARRYING OUT THE INVENTION The present invention is described in detail below.
The heating element for fusing the synthetic resin of the present invention comprises a mixture of (a) a thermoplastic resin or a thermoplastic elastomer and a mixture thereof, (b) a low melting point metal having a melting point of 300 ° C. or lower, and (c) a metal powder. It is characterized by being composed of (hereinafter referred to as “mixed material”). As described above, the combination of (a) the thermoplastic resin or the thermoplastic elastomer and the mixture thereof with the metal component for imparting the function as the heating element makes it possible to impart the heat-generating property and other properties in a well-balanced manner. Is found.
【０００７】混合材に用いられる（ａ）熱可塑性樹脂と
してはポリオレフィン系樹脂やＡＢＳ樹脂、ポリエステ
ル樹脂、ポリカーボネート樹脂など種々の材料が使用で
き、熱可塑性エラストマーとしては、オレフィン系、ス
チレン系、塩ビ系、ウレタン系、エステル系、アミド系
など種々のタイプのものが使用可能である。熱可塑性樹
脂と熱可塑性エラストマーは混合して使用しても良く、
例えば、熱可塑性樹脂としてＰＰを使用した場合、熱可
塑性エラストマーはポリオレフィン系エラストマーを用
いるのが好適である。Various materials such as polyolefin resin, ABS resin, polyester resin and polycarbonate resin can be used as the thermoplastic resin (a) used in the mixed material, and as the thermoplastic elastomer, an olefin type resin, a styrene type resin or a vinyl chloride type resin can be used. Various types such as urethane type, ester type and amide type can be used. The thermoplastic resin and the thermoplastic elastomer may be mixed and used,
For example, when PP is used as the thermoplastic resin, it is preferable to use a polyolefin-based elastomer as the thermoplastic elastomer.
【０００８】（ｂ）の融点が３００℃以下の低融点金属
には各種のものが使用できる。融点の測定方法は示差走
査熱量測定法（ＤＳＣ）により測定すればよく、融点が
３００℃を越える金属では成形性が劣るという問題があ
る。具体的にはＰｂ／Ｓｎ、Ｐｂ／Ｓｎ／Ｂｉ、Ｐｂ／
Ｓｎ／Ａｇ、 Ｐｂ／Ａｇ、Ｓｎ／Ａｇ、 Ｓｎ／Ｂｉ、Ｓ
ｎ／Ｃｕ、Ｓｎ／Ｚｎ系から選ばれた低融点合金が好適
に使用できる。Various metals can be used as the low melting point metal (b) having a melting point of 300 ° C. or less. The melting point may be measured by a differential scanning calorimetry (DSC) method, and a metal having a melting point of higher than 300 ° C. has a problem of poor formability. Specifically, Pb / Sn, Pb / Sn / Bi, Pb /
Sn / Ag, Pb / Ag, Sn / Ag, Sn / Bi, S
A low melting point alloy selected from n / Cu and Sn / Zn can be preferably used.
【０００９】（ｃ）成分の金属粉末は上記低融点金属の
分散助剤となるものであり、Ｃｕ、Ｎｉ、Ａｌ、Ｃｒ及
びそれらの合金粉末が好適に使用でき、その平均粒径が
１〜５０μｍの範囲のものが好ましい。平均粒径は試料
を透過型電子顕微鏡により撮影し、写真から求めた数平
均粒子径である。平均粒径が１μｍ未満では混合の際の
ハンドリングが困難であり、また５０μｍを越えるもの
では分散性が低下し易い傾向がある。The metal powder of the component (c) serves as a dispersion aid for the above-mentioned low melting point metal, and Cu, Ni, Al, Cr and their alloy powders can be preferably used, and their average particle diameter is 1 to 1. It is preferably in the range of 50 μm. The average particle diameter is the number average particle diameter obtained from a photograph of a sample taken by a transmission electron microscope. If the average particle size is less than 1 μm, handling during mixing is difficult, and if it exceeds 50 μm, the dispersibility tends to decrease.
【００１０】上記混合材において、（ａ）熱可塑性樹脂
又は熱可塑性エラストマー及びこれらの混合物を組成物
全体の２０〜８０容量％、好ましくは４０〜６０容量％
の範囲で含有することが好ましい。樹脂ブレンド成分が
８０容量％を越えると通電困難となり適切な発熱特性が
発現し難い傾向にあり、２０容量％未満では、流動性が
低下して成形性が劣るとともに、溶着後の強度が低下す
るという問題がある。また、樹脂ブレンド物と低融点金
属との接着強度を向上させるために酸変成ポリオレフィ
ンなどの界面接着剤を添加することも好適である。ま
た、金属成分中の（ｃ）金属粉末の割合を１０〜３０容
量％、好ましくは１５〜２５容量％の範囲とすることが
好ましい。１０容量％未満では、分散状態が悪くなり、
３０容量％を越えると流動性が低下するとともに脆化し
やすくなる。In the above mixture, (a) a thermoplastic resin or a thermoplastic elastomer and a mixture thereof are contained in an amount of 20 to 80% by volume, preferably 40 to 60% by volume of the entire composition.
It is preferable to contain in the range of. When the resin blending component exceeds 80% by volume, it becomes difficult to energize and it is difficult to develop appropriate heat generation characteristics, and when it is less than 20% by volume, the fluidity decreases and the moldability deteriorates, and the strength after welding decreases. There is a problem. It is also suitable to add an interfacial adhesive such as an acid-modified polyolefin to improve the adhesive strength between the resin blend and the low melting point metal. The ratio of the (c) metal powder in the metal component is preferably 10 to 30% by volume, more preferably 15 to 25% by volume. If it is less than 10% by volume, the dispersed state becomes worse,
If it exceeds 30% by volume, the fluidity tends to be low and embrittlement tends to occur.
【００１１】本発明の合成樹脂融着用発熱体の製造方法
は、上記混合材の各成分を用い、混合したものを所定の
温度でニーダや二軸押出機等の混練機により混練後、造
粒したものを使用する方法が好ましい。混練においては
（ｃ）低融点金属が半溶融状態となる温度が好ましく、
マトリックスとなる樹脂ブレンド物の溶融温度に応じて
適切な金属組成を選択し、低融点金属と分散助剤となる
銅粉、ニッケル粉末等の添加比率を適宜選択する必要が
ある。加工温度が低融点金属の融点の１５℃以上になる
と、一旦分散した金属が凝集し、樹脂との分離を生ずる
ために必要以上に温度を上げることは避ける必要があ
る。以上の方法で得られた造粒物は、使用目的に対応す
る形状の金型を用いて射出成形法、トランスファー成形
法、プレス成形法等の通常の成形法により賦形し、成形
品とすることができる。また、Ｔダイ押出成形機等によ
りシート化も可能である。The method for producing a heating element for fusing synthetic resin of the present invention comprises the steps of using the components of the above-mentioned mixture, mixing the mixture at a predetermined temperature with a kneader such as a kneader or a twin-screw extruder, and then granulating the mixture. The method of using the above is preferable. In the kneading, the temperature at which the low melting point metal (c) is in a semi-molten state is preferable,
It is necessary to select an appropriate metal composition according to the melting temperature of the resin blend to be the matrix, and to appropriately select the addition ratio of the low melting point metal and the copper powder, nickel powder or the like to be the dispersion aid. When the processing temperature is 15 ° C. or higher, which is the melting point of the low melting point metal, it is necessary to avoid raising the temperature more than necessary in order to cause the dispersed metal to aggregate and separate from the resin. The granulated product obtained by the above method is shaped by a usual molding method such as an injection molding method, a transfer molding method, a press molding method or the like using a mold having a shape corresponding to the purpose of use to obtain a molded product. be able to. Further, it can be formed into a sheet by using a T-die extrusion molding machine or the like.
【００１２】以上述べたように、本発明の合成樹脂融着
用発熱体は、熱可塑性樹脂又は熱可塑性エラストマー及
びこれらの混合物に発熱源である低融点金属が均一に網
目状に分散していることから、合成樹脂融着用発熱体の
端部間に通電すれば基材樹脂は均一に溶融し、被着体に
強く融着させることができる。As described above, in the heating element for fusing the synthetic resin of the present invention, the low melting point metal which is the heat source is uniformly dispersed in the thermoplastic resin or the thermoplastic elastomer and the mixture thereof in the form of a mesh. Therefore, if the electric current is applied between the ends of the heating element for fusing the synthetic resin, the base resin is uniformly melted and can be strongly fused to the adherend.
【００１３】[0013]
【実施例】以下、実施例について説明するが、本発明は
これに限定されるものではない。
（実施例）熱可塑性樹脂として酸変性ＰＥ樹脂（「レク
スパールＥＴ２１５Ｍ」 日本ポリオレフィン株式会社
製）を用いた。低融点金属として鉛フリーハンダ（Ｓｎ
−４Ｃｕ−２Ｎｉ 融点 固相線２２５℃−液相線４８
０℃）、金属粉末として平均粒径１０μｍの銅粉を用い
た。あらかじめ各原料粉末を物理混合し（樹脂４０容量
％、低融点金属４５容量％、金属粉末５容量％）、混練
機（森山製作所製、２軸加圧タイプ）を用いて溶融混練
後、プランジャー押出造粒機を用いて低融点金属含有樹
脂ペレットを作成した。EXAMPLES Examples will be described below, but the present invention is not limited thereto. (Example) As the thermoplastic resin, an acid-modified PE resin (“LEX PEARL ET215M” manufactured by Nippon Polyolefin Co., Ltd.) was used. Lead-free solder (Sn
-4Cu-2Ni Melting point Solid phase line 225 ° C-Liquid phase line 48
(0 ° C.), and copper powder having an average particle size of 10 μm was used as the metal powder. Each raw material powder is physically mixed in advance (40% by volume of resin, 45% by volume of low melting point metal, 5% by volume of metal powder), melt-kneaded using a kneader (Moriyama Seisakusho's biaxial pressure type), and then a plunger. Low melting point metal-containing resin pellets were prepared using an extrusion granulator.
【００１４】混練条件は以下の通りである。 混練温度： ２００℃ 回転数： ３５ｒ．ｐ．ｍ．The kneading conditions are as follows. Kneading temperature: 200 ℃ Rotation speed: 35 r. p. m.
【００１５】その後、Ｔダイ押出機により厚さ０．５ｍ
ｍのシート成形を下記の条件で行った。
シリンダー温度： ２００℃
口金温度 ：２００℃
スクリュ回転数 ： ５０ｒ．ｐ．ｍ．
得られたシート（合成樹脂融着用発熱体；１５０ｍｍ×
１２．５ｍｍ×０．５ｍｍ、体積抵抗率：３.２×１０
−３ Ω・ｃｍ (常温））を図１のように、被着体（Ｐ
Ｅシート；１００ｍｍ×２５ｍｍ×３.０ｍｍ）の間に
挟み、０.１ｋｇ/ｃｍ２の荷重で加圧した状態で通電し
融着した。尚、合成樹脂融着用発熱体の両端にかかる電
圧は、３.０Ｖとし、通電時間は１０分間とした。因み
に、本方法によって得た融着品について、ＪＩＳ Ｋ６
８５０に基づいた引張せん断接着強さを評価したとこ
ろ、破壊の状態は凝集破壊であり、引張せん断接着強さ
は、１．８ＭＰａであった。After that, the thickness is 0.5 m by a T-die extruder.
The sheet m was molded under the following conditions. Cylinder temperature: 200 ° C Base temperature: 200 ° C Screw rotation speed: 50r. p. m. Obtained sheet (heating element for fusing synthetic resin; 150 mm x
12.5 mm × 0.5 mm, volume resistivity: 3.2 × 10
-3 Ω · cm (normal temperature) as shown in Fig. 1
E sheet; 100 mm × 25 mm × 3.0 mm), and the sheets were energized and fused under a pressure of 0.1 kg / cm 2 . The voltage applied to both ends of the synthetic resin fusing heating element was 3.0 V, and the energization time was 10 minutes. By the way, regarding fused products obtained by this method, JIS K6
When the tensile shear adhesive strength was evaluated based on 850, the state of failure was cohesive failure, and the tensile shear adhesive strength was 1.8 MPa.
【００１６】[0016]
【発明の効果】上述したように、本発明の合成樹脂融着
用発熱体は、熱可塑性樹脂又は熱可塑性エラストマー及
びこれらの混合物に通電発熱体である低融点金属が均一
に網目状に分散されていることから合成樹脂融着用発熱
体の端部間に通電すれば基材樹脂は均一に溶融し、被着
体に強く融着させることができる。As described above, in the heating element for fusing synthetic resin of the present invention, the low melting point metal which is an electric heating element is uniformly dispersed in the thermoplastic resin or the thermoplastic elastomer and the mixture thereof in a mesh shape. Therefore, if the electric current is applied between the ends of the heating element for fusing the synthetic resin, the base resin is uniformly melted and can be strongly fused to the adherend.
【図１】被着体（ＰＥシート）の間に本発明の合成樹脂
融着用発熱体を介在させ、該合成樹脂融着用発熱体に電
流を供給した状態図である。FIG. 1 is a state diagram in which a heating element for fusing synthetic resin of the present invention is interposed between adherends (PE sheets) and an electric current is supplied to the heating element for fusing synthetic resin.
１．合成樹脂融着用発熱体 ２．被着体（ＰＥシート） 1. Heating element for fusion of synthetic resin 2. Substrate (PE sheet)
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3K034 AA02 AA08 BB08 BC02 FA32 JA01 3K092 PP20 QA05 QA06 QB02 RF02 RF03 RF14 TT28 VV03 VV21 4F211 AA04 AC03 AD03 AD08 AG01 AJ02 AJ03 AJ07 TA01 TC08 TD11 TN02 TN19 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 3K034 AA02 AA08 BB08 BC02 FA32 JA01 3K092 PP20 QA05 QA06 QB02 RF02 RF03 RF14 TT28 VV03 VV21 4F211 AA04 AC03 AD03 AD08 AG01 AJ02 AJ03 AJ07 TA01 TC08 TD11 TN02 TN19
Claims (7)
トマー及びこれらの混合物を基質とし、これに（ｂ）融
点が３００℃以下の低融点金属、及び（ｃ）金属粉末を
混合してなる合成樹脂融着用発熱体。1. A synthesis obtained by using (a) a thermoplastic resin or a thermoplastic elastomer and a mixture thereof as a substrate, and (b) a low melting point metal having a melting point of 300 ° C. or less, and (c) a metal powder. Heating element for resin fusion.
トマー及びこれらの混合物が発熱体の２０〜８０容量
％、（ｂ）及び（ｃ）を合わせた金属成分中の（ｃ）金
属粉末の割合が１０〜３０容量％の範囲であることを特
徴とする請求項１記載の合成樹脂融着用発熱体。2. A thermoplastic resin or thermoplastic elastomer and a mixture thereof (a) are 20 to 80% by volume of a heating element, and a ratio of (c) metal powder in a metal component of (b) and (c). Is in the range of 10 to 30% by volume, and the heating element for fusion of synthetic resin according to claim 1, characterized in that.
ｎ、Ｐｂ／Ｓｎ／Ｂｉ、Ｐｂ／Ｓｎ／Ａｇ、 Ｐｂ／Ａ
ｇ、 Ｓｎ／Ａｇ、 Ｓｎ／Ｂｉ、Ｓｎ／Ｃｕ、Ｓｎ／Ｚｎ
系から選ばれた低融点合金からなることを特徴とする請
求項１又は２記載の合成樹脂融着用発熱体。3. The low melting point metal of the component (b) is Pb / S.
n, Pb / Sn / Bi, Pb / Sn / Ag, Pb / A
g, Sn / Ag, Sn / Bi, Sn / Cu, Sn / Zn
The heating element for fusing synthetic resin according to claim 1 or 2, which is made of a low-melting point alloy selected from the group.
ｌ、Ｃｒ及びそれらの合金粉末からなり、その平均粒径
が１〜５０μｍの範囲であることを特徴とする請求項１
乃至３のいずれか１項記載の合成樹脂融着用発熱体。4. The component (c) metal powder is Cu, Ni, A.
1. An average particle diameter of 1 to 50 .mu.m in the range of 1 to 50 .mu.m.
4. A heating element for fusing synthetic resin according to any one of 1 to 3.
トマー及びこれらの混合物、（ｂ）融点が３００℃以下
の低融点金属、（ｃ）金属粉末を混合した後、溶融・混
練して成形する合成樹脂融着用発熱体の製造方法であっ
て、合成樹脂融着用発熱体の成形温度を、この材料中に
含まれる（ａ）熱可塑性樹脂又は熱可塑性エラストマー
及びこれらの混合物の融点以上で、かつ前記（ｂ）低融
点金属の融点より１５℃高い温度以下として成形するこ
とを特徴とする合成樹脂融着用発熱体の製造方法。5. A mixture of (a) a thermoplastic resin or a thermoplastic elastomer and a mixture thereof, (b) a low melting point metal having a melting point of 300 ° C. or less, and (c) a metal powder, and then melted and kneaded to form the mixture. A method for producing a heating element for fusing synthetic resin, wherein the molding temperature of the heating element for fusing synthetic resin is (a) a thermoplastic resin or a thermoplastic elastomer and a mixture thereof contained in this material, and (B) A method for producing a heating element for fusing synthetic resin, characterized by molding at a temperature not higher than 15 ° C. higher than the melting point of the low melting point metal.
の合成樹脂融着用発熱体を通電によって発熱させ、その
熱により熱可塑性樹脂又は熱可塑性エラストマー及びこ
れらの混合物を溶融させ、合成樹脂融着用発熱体同士、
又は該合成樹脂融着用発熱体と他の合成樹脂材料とを融
着させることを特徴とする融着方法。6. The synthetic resin fusion heating element according to any one of claims 1 to 4 is caused to generate heat by energization, and the heat causes the thermoplastic resin or the thermoplastic elastomer and a mixture thereof to be melted to produce a synthetic resin. Fusing heating elements,
Alternatively, a fusion-bonding method is characterized in that the heating element for fusion of the synthetic resin is fused with another synthetic resin material.
樹脂融着用発熱体同士、又は該合成樹脂融着用発熱体と
他の合成樹脂材料とが融着されてなる成形体。7. A molded body obtained by fusing the heating elements for fusion of synthetic resin or the heating element for fusion of synthetic resin and another synthetic resin material by the fusion method according to claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002026774A JP2003225947A (en) | 2002-02-04 | 2002-02-04 | Heating element for fusion-bonding synthetic resin and method for manufacturing heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002026774A JP2003225947A (en) | 2002-02-04 | 2002-02-04 | Heating element for fusion-bonding synthetic resin and method for manufacturing heating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003225947A true JP2003225947A (en) | 2003-08-12 |
Family
ID=27748504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002026774A Pending JP2003225947A (en) | 2002-02-04 | 2002-02-04 | Heating element for fusion-bonding synthetic resin and method for manufacturing heating element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003225947A (en) |
-
2002
- 2002-02-04 JP JP2002026774A patent/JP2003225947A/en active Pending
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