JPH05261839A - Laminated seamless belt for conveying paper - Google Patents
Laminated seamless belt for conveying paperInfo
- Publication number
- JPH05261839A JPH05261839A JP4093911A JP9391192A JPH05261839A JP H05261839 A JPH05261839 A JP H05261839A JP 4093911 A JP4093911 A JP 4093911A JP 9391192 A JP9391192 A JP 9391192A JP H05261839 A JPH05261839 A JP H05261839A
- Authority
- JP
- Japan
- Prior art keywords
- seamless belt
- paper
- tube
- belt
- laminated
- 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
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 26
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 23
- 230000009477 glass transition Effects 0.000 claims abstract description 14
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000000806 elastomer Substances 0.000 claims abstract description 12
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 11
- 239000004695 Polyether sulfone Substances 0.000 claims abstract description 11
- 239000003086 colorant Substances 0.000 claims abstract description 11
- 229920006393 polyether sulfone Polymers 0.000 claims abstract description 11
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 11
- 238000002834 transmittance Methods 0.000 claims abstract description 9
- 150000002148 esters Chemical class 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 13
- 229920001230 polyarylate Polymers 0.000 claims description 6
- 229920006311 Urethane elastomer Polymers 0.000 claims description 2
- 230000007257 malfunction Effects 0.000 abstract description 10
- 230000003287 optical effect Effects 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract 1
- 229920000058 polyacrylate Polymers 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 36
- 239000011347 resin Substances 0.000 description 36
- 238000004519 manufacturing process Methods 0.000 description 21
- 238000010438 heat treatment Methods 0.000 description 16
- 239000002184 metal Substances 0.000 description 15
- 229910052751 metal Inorganic materials 0.000 description 15
- 229920000139 polyethylene terephthalate Polymers 0.000 description 13
- 239000005020 polyethylene terephthalate Substances 0.000 description 13
- -1 diisocyanate compound Chemical class 0.000 description 12
- 239000010410 layer Substances 0.000 description 12
- 230000000704 physical effect Effects 0.000 description 10
- 229920005749 polyurethane resin Polymers 0.000 description 8
- 239000002356 single layer Substances 0.000 description 8
- 230000032258 transport Effects 0.000 description 8
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920001225 polyester resin Polymers 0.000 description 3
- 239000004645 polyester resin Substances 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- FWLHAQYOFMQTHQ-UHFFFAOYSA-N 2-N-[8-[[8-(4-aminoanilino)-10-phenylphenazin-10-ium-2-yl]amino]-10-phenylphenazin-10-ium-2-yl]-8-N,10-diphenylphenazin-10-ium-2,8-diamine hydroxy-oxido-dioxochromium Chemical compound O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.Nc1ccc(Nc2ccc3nc4ccc(Nc5ccc6nc7ccc(Nc8ccc9nc%10ccc(Nc%11ccccc%11)cc%10[n+](-c%10ccccc%10)c9c8)cc7[n+](-c7ccccc7)c6c5)cc4[n+](-c4ccccc4)c3c2)cc1 FWLHAQYOFMQTHQ-UHFFFAOYSA-N 0.000 description 1
- 229920006347 Elastollan Polymers 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920006230 thermoplastic polyester resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、用紙搬送用積層シーム
レスベルトに関するものであり、特に電子機器、例えば
インクジェットプリンター等に使用される、ベルト表面
の摩擦抵抗が大きく、寸法精度の良い、高温度下でもフ
ィルムの収縮がない用紙搬送用積層シームレスベルトに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated seamless belt for transporting paper, and particularly used in electronic equipment such as an ink jet printer, the belt surface has a large friction resistance, good dimensional accuracy, and high temperature. The present invention also relates to a laminated seamless belt for transporting paper, which does not shrink the film even underneath.
【０００２】[0002]
【従来の技術】合成高分子フィルムからなるエンドレス
ベルトは、従来のゴム製ベルトに比べて厚み当りの機械
的強度が優れていること、加工性に優れていることか
ら、装置の小型化、軽量化を行なう為の、種々の用途に
用いられている。しかしながら、通常これらのエンドレ
スベルトは合成樹脂フィルムの両端部を接着接合した
り、融着接合して製造するので、継ぎ目部分に段差がで
きて走行が不安定になったり、長期間の使用で接合部か
ら破損しやすいなどの問題があった。2. Description of the Related Art Endless belts made of synthetic polymer film are smaller and lighter in weight because they have better mechanical strength per thickness and workability than conventional rubber belts. It is used for various purposes to achieve However, these endless belts are usually manufactured by adhesively joining or fusing both ends of a synthetic resin film. There was a problem that it was easily damaged from the part.
【０００３】このような問題を解決する方法として、合
成樹脂チューブを加工してシームレスベルトとする方法
が提案されている。シームレスベルトは継ぎ目がないこ
とから従来のエンドレスベルトに比べて、寿命が長く、
継ぎ目の位置の制御の必要もなく駆動部分が簡素化でき
ること、並びに、スムーズに回転するなどの利点を有し
ている。As a method for solving such a problem, there has been proposed a method in which a synthetic resin tube is processed into a seamless belt. Seamless belts have a longer life than conventional endless belts because they are seamless.
It has the advantages that the drive part can be simplified without the need to control the position of the joint and that it rotates smoothly.
【０００４】このようなシームレスベルトを用紙搬送用
シームレスベルトとして利用する場合、上述のように継
ぎ目のないことはもちろんのこと、ベルトとして使用す
る上でさまざまな性能が要求されている。特に電子機
器、例えばインクジェットプリンターの用紙搬送ベルト
に用いる場合、ベルトの径の寸法精度、高温での連続使
用を可能とする耐熱性、及び用紙を確実に固定搬送する
用紙搬送性、用紙を検知する場合にセンサーが誤動作し
ないような光学特性等が要求される。When such a seamless belt is used as a paper carrying seamless belt, it is required to have various performances as well as being seamless as described above. Especially when it is used for electronic equipment, such as the paper transport belt of an inkjet printer, the dimensional accuracy of the diameter of the belt, the heat resistance that enables continuous use at high temperature, and the paper transportability that securely transports the paper, and detects the paper In this case, optical characteristics and the like are required so that the sensor does not malfunction.
【０００５】従来、シームレスベルトとしては特開昭６
４−８０２５号公報には２軸延伸熱可塑性ポリエステル
樹脂のシームレスベルトが提案されている。しかしなが
ら、ホットメルト型インクを用紙に飛ばし記録するイン
クジェットプリンターの用紙搬送に使用した場合、１４
０℃程度に加熱されたホットメルト型インクを用紙に飛
ばし記録する為、用紙を支持搬送するベルトも１２０℃
〜１４０℃の温度になり、ガラス転移温度が一般に１０
０℃未満である該ポリエステル樹脂で製造されたシーム
レスベルトでは熱変形が生じ、上記の用途に使用するこ
とは困難であった。Conventionally, as a seamless belt, Japanese Patent Laid-Open No.
Japanese Patent No. 4-8025 proposes a seamless belt of biaxially stretched thermoplastic polyester resin. However, when the hot-melt type ink is used for conveying the paper of an ink jet printer which prints on the paper,
Since the hot-melt ink heated to about 0 ° C is blown onto the paper for recording, the belt that supports and conveys the paper is also 120 ° C.
Up to a temperature of 140 ° C. and a glass transition temperature of generally 10
A seamless belt made of the polyester resin having a temperature of less than 0 ° C. was thermally deformed, and it was difficult to use it for the above applications.
【０００６】一方、耐熱性を向上させるために上記ポリ
エステル樹脂以外のガラス転移点が高い熱可塑性樹脂を
用いたシームレスベルトを用紙搬送ベルトに使用して
も、通常これらの熱可塑性樹脂は表面の摩擦抵抗が小さ
く、滑りが良いので搬送途中に用紙がずれるとか、印字
が不鮮明になるなどの問題点があった。On the other hand, even if a seamless belt made of a thermoplastic resin having a high glass transition point other than the above polyester resin is used as a paper conveying belt in order to improve heat resistance, these thermoplastic resins usually cause surface friction. Since the resistance is small and the slip is good, there are problems that the paper is misaligned during transportation and the printing becomes unclear.
【０００７】更に、紙搬送用ベルトとして使用する場合
には、装置内部に通常装備されている用紙の有無、位置
の確認の為のセンサーが光線反射型の場合、ベルトが光
線透過性を有していると、センサーが誤動作し、例え
ば、用紙が無いのにもかかわらずシームレスベルト上に
インクが飛散する等の問題点があった。Further, when it is used as a paper conveying belt, when the sensor for confirming the presence or absence of the paper and the position, which is usually equipped inside the apparatus, is a light reflecting type, the belt has a light transmitting property. If so, the sensor malfunctions, and, for example, there is a problem that ink is scattered on the seamless belt even when there is no paper.
【０００８】このような問題点を解決するために上記ガ
ラス転移点が高い熱可塑性樹脂に着色剤や充填剤を混入
すると、逆にこれらの熱可塑性樹脂の持つ優れた特性が
低下したり押出成形が困難になるなどの問題点があっ
た。If a coloring agent or a filler is mixed with the above-mentioned thermoplastic resin having a high glass transition point in order to solve such a problem, the excellent properties of these thermoplastic resins are deteriorated or the extrusion molding is performed. There was a problem that it became difficult.
【０００９】[0009]
【本発明が解決しようとする課題】本発明は、使用環境
の変化によっても、特に比較的高温度下でもフィルムの
寸法安定性に優れ、ベルト表面摩擦抵抗が大きく、紙送
り精度の良い、更にセンサーが誤動作しないような光学
特性を持つ、電子機器、例えばインクジェットプリンタ
ーの用紙搬送ベルトに利用する積層シームレスベルトを
提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention has excellent dimensional stability of the film even when the operating environment is changed, especially at a relatively high temperature, has a large belt surface friction resistance, and has a good paper feeding accuracy. An object of the present invention is to provide a laminated seamless belt used as a paper transport belt of an electronic device, for example, an inkjet printer, which has optical characteristics so that the sensor does not malfunction.
【００１０】[0010]
【課題を解決するための手段】本発明によれば、内層が
ガラス転移温度１４０℃以上の熱可塑性樹脂（Ａ）から
なり、外層が表面の滑り摩擦係数０．６以上の熱可塑性
エラストマー（Ｂ）からなることを特徴とする用紙搬送
用積層シームレスベルトが提供され、また前記の熱可塑
性樹脂（Ａ）がポリアリレート、ポリエーテルサルホ
ン、又はポリエーテルエーテルケトンであることを特徴
とする前記用紙搬送用積層シームレスベルトが提供さ
れ、更に、前記熱可塑性エラストマー（Ｂ）がウレタン
系エラストマー、又はエステル系エラストマーであるこ
とを特徴とする前記用紙搬送用積層シームレスベルトが
提供され、更に又、前記外層が、着色剤を添加した熱可
塑性エラストマー（Ｂ）からなり、光線透過率が１０％
以下であることを特徴とする前記用紙搬送用積層シーム
レスベルトが提供される。According to the present invention, the inner layer is made of a thermoplastic resin (A) having a glass transition temperature of 140 ° C. or higher, and the outer layer is a thermoplastic elastomer (B) having a surface sliding friction coefficient of 0.6 or higher. And a thermoplastic resin (A) is polyarylate, polyethersulfone, or polyetheretherketone. Provided is a laminated seamless belt for carrying, and further, the laminated seamless belt for carrying paper is provided, wherein the thermoplastic elastomer (B) is a urethane elastomer or an ester elastomer, and further, the outer layer. Consists of a thermoplastic elastomer (B) to which a colorant is added, and has a light transmittance of 10%.
There is provided the above-mentioned laminated seamless belt for paper transport, which is characterized in that:
【００１１】即ち、本発明の積層シームレスベルトは内
層にガラス転移温度１４０℃以上の熱可塑性樹脂（Ａ）
を使用しているので耐熱性が良く、１４０℃の高温下で
も収縮したり、熱変形することなくベルトの径の寸法精
度を保持できる。又、外層には表面の滑り摩擦係数が
０．６以上の熱可塑性エラストマー（Ｂ）を使用してい
るので紙との滑り摩擦抵抗が大きく、搬送途中に用紙が
ずれるとか、印字が不鮮明にならず、正確な印字が可能
であるのみならず、上記熱可塑性エラストマー（Ｂ）は
混練性が良いので着色剤、充填剤などを上記積層シーム
レスベルトの物性を低下させることなく添加混合するこ
とができる。That is, the laminated seamless belt of the present invention has a thermoplastic resin (A) having a glass transition temperature of 140 ° C. or more as an inner layer.
Since it is used, the heat resistance is good, and the dimensional accuracy of the diameter of the belt can be maintained without shrinking or thermal deformation even at a high temperature of 140 ° C. Further, since the outer layer is made of a thermoplastic elastomer (B) having a surface sliding friction coefficient of 0.6 or more, the sliding friction resistance with the paper is large, and if the paper is misaligned during transportation or the printing becomes unclear. In addition, accurate printing is possible, and since the thermoplastic elastomer (B) has a good kneading property, a coloring agent, a filler and the like can be added and mixed without deteriorating the physical properties of the laminated seamless belt. ..
【００１２】以下、本発明を詳細に説明する。本発明で
使用するガラス転移温度１４０℃以上の熱可塑性樹脂と
しては、ポリカーボネート、ポリスルホン、ポリエーテ
ルイミド、ポリアリレート、ポリエーテルサルホン、ポ
リエーテルエーテルケトン、ポリイミドなどが挙げられ
るが、特に、ポリアリレート、ポリエーテルサルホン、
ポリエーテルエーテルケトンが適している。The present invention will be described in detail below. Examples of the thermoplastic resin having a glass transition temperature of 140 ° C. or higher used in the present invention include polycarbonate, polysulfone, polyetherimide, polyarylate, polyethersulfone, polyetheretherketone, polyimide, and the like, but particularly polyarylate. , Polyether sulfone,
Polyether ether ketone is suitable.
【００１３】熱可塑性エラストマー（Ｂ）としては表面
の滑り摩擦抵抗が０．６以上であれば通常市販されてい
るものはいずれでも使用できるが、耐熱性、及び、基材
となる熱可塑性樹脂（Ａ）との接着性が良いウレタン系
エラストマー、エステル系エラストマーが特に好まし
い。ここでいうウレタン系エラストマーとは、長鎖のジ
オール、短鎖のジオールとジイソシアナート化合物から
製造された、通常市販されているものがなんら制限され
ずに使用される。又、エステル系エラストマーとはポリ
ブチレンテレフタレートやポリカプロラクトンをハード
セグメントとし、ポリテトラメチレングリコールテレフ
タレートをソフトセグメントとするポリエーテル・エス
テルコーポリマーが挙げられる。As the thermoplastic elastomer (B), any commercially available one can be used as long as the sliding friction resistance of the surface is 0.6 or more, but the heat resistance and the thermoplastic resin as the base material ( Urethane-based elastomers and ester-based elastomers having good adhesiveness with A) are particularly preferable. As the urethane-based elastomer, a commercially available one produced from a long-chain diol, a short-chain diol and a diisocyanate compound is used without any limitation. Examples of the ester-based elastomer include a polyether-ester copolymer having polybutylene terephthalate or polycaprolactone as a hard segment and polytetramethylene glycol terephthalate as a soft segment.
【００１４】更に、用紙搬送用シームレスベルトとして
用いた場合、用紙が無いのにもかかわらず積層シームレ
スベルト上にインクが飛散する等のセンサーの誤動作防
止の為、積層シームレスベルトの光線透化率を低くする
のが好ましい。該光線透過率を低くするには、例えば混
練性のよい積層シームレスベルトの外層の熱可塑性エラ
ストマー（Ｂ）に着色剤を添加することが好ましい。着
色剤としてはカーボンブラック、アニリンブラック、コ
バルトブルー、フタロシアニンブルー、フタロシアニン
グリーン等のベルト表面の反射率が低くなる顔料等が適
している。センサーの誤動作は該シームレスベルトの外
層の光線透過率が１０％を超えると起こりやすくなるの
で、光線透過率を１０％以下にするのが好ましい、その
ため熱可塑性エラストマー（Ｂ）への着色剤の添加量は
１〜１０重量％が適量であり、好ましくは２〜５重量％
である。熱可塑性エラストマー（Ｂ）への添加量が１重
量％未満の場合は光線透過率が大きくなり、又、１０重
量％を超えると熱可塑性エラストマーの製膜性が悪くな
るので好ましくない。Further, when used as a seamless belt for conveying paper, the light transmittance of the laminated seamless belt is adjusted to prevent malfunction of the sensor such as ink scattering on the laminated seamless belt even when there is no paper. It is preferable to lower it. In order to reduce the light transmittance, for example, it is preferable to add a colorant to the thermoplastic elastomer (B) in the outer layer of the laminated seamless belt having good kneadability. As the colorant, pigments such as carbon black, aniline black, cobalt blue, phthalocyanine blue, and phthalocyanine green that reduce the reflectance on the belt surface are suitable. Since malfunction of the sensor easily occurs when the light transmittance of the outer layer of the seamless belt exceeds 10%, it is preferable to set the light transmittance to 10% or less. Therefore, addition of a coloring agent to the thermoplastic elastomer (B) is preferable. A suitable amount is 1 to 10% by weight, preferably 2 to 5% by weight
Is. When the amount added to the thermoplastic elastomer (B) is less than 1% by weight, the light transmittance becomes large, and when it exceeds 10% by weight, the film forming property of the thermoplastic elastomer is deteriorated, which is not preferable.
【００１５】このような本発明の用紙搬送用積層シーム
レスベルトは、例えば以下の方法で製造される。まず本
発明の積層シームレスベルトの内層を構成する円筒形の
熱可塑性樹脂チューブは、ガラス転移点１４０℃以上の
熱可塑性樹脂（Ａ）を溶融して環状ダイからチューブ状
に押出し、冷却後巻取る、いわゆるインフレーション製
膜法か、又は該熱可塑性樹脂（Ａ）を溶融して環状ダイ
からチューブ状に押出し、冷却した後インフレーション
二軸延伸して巻取る、いわゆるインフレーション二軸延
伸製膜法にて得ることができる。特に、インフレーショ
ン二軸延伸製膜法で得られるチューブの厚みは２０〜３
００μが好ましく、厚みが２０μ未満であればシームレ
スベルトが伸びるとか切断する等の強度的な問題があ
り、逆に厚みが３００μを超えると得られるシームレス
ベルトの剛性が高くなり、ベルトがスムースに駆動しな
いという問題が発生するので好ましくない。Such a laminated seamless belt for carrying a sheet according to the present invention is manufactured, for example, by the following method. First, the cylindrical thermoplastic resin tube that constitutes the inner layer of the laminated seamless belt of the present invention melts the thermoplastic resin (A) having a glass transition point of 140 ° C. or more, extrudes it into a tube shape from an annular die, and winds it after cooling. A so-called inflation film forming method, or a so-called inflation biaxial film forming method in which the thermoplastic resin (A) is melted and extruded from an annular die into a tube shape, cooled and then inflation biaxially stretched and wound. Obtainable. In particular, the thickness of the tube obtained by the inflation biaxial stretching film forming method is 20 to 3
00μ is preferable, and if the thickness is less than 20μ, there is a strength problem such as stretching or cutting of the seamless belt. Conversely, if the thickness exceeds 300μ, the rigidity of the obtained seamless belt becomes high and the belt is driven smoothly. This is not preferable because the problem of not doing occurs.
【００１６】これらのチューブの内径は、シームレスベ
ルトとしたときに必要な内径の０．９０〜１．０５倍程
度になるようにするのが望ましい。内径が０．９０倍未
満では後述する円筒形のドラムに挿入するのが困難であ
り、内径が１．０５倍を超えると逆に該円筒形のドラム
との間にギャップができ、しわが発生してシームレスベ
ルト表面の平滑性が悪くなるとか、シームレスベルト内
径の寸法精度が悪くなるので好ましくない。しかしなが
らインフレーション二軸延伸方法にて得られた収縮性を
有するチューブの場合は、前工程として必要な内径の
０．９０〜１．０５倍程度の金属製ドラムに被覆し加熱
収縮させ、チューブの内径を、シームレスベルトとした
ときに、必要な内径の０．９０〜１．０５倍程度にす
る。同時に加熱時に該チューブが熱セットされ内部歪み
が除去されるので、高温下で使用しても熱収縮が少なく
寸法安定性のよいシームレスベルトが得られる。したが
って、この場合は内径が１．０５倍以上であってもなん
ら問題はない。The inner diameter of these tubes is preferably 0.90 to 1.05 times the inner diameter required for a seamless belt. When the inner diameter is less than 0.90 times, it is difficult to insert it into a cylindrical drum described later, and when the inner diameter exceeds 1.05 times, a gap is formed between the cylindrical drum and the wrinkle. Then, the smoothness of the surface of the seamless belt is deteriorated, or the dimensional accuracy of the inner diameter of the seamless belt is deteriorated, which is not preferable. However, in the case of a shrinkable tube obtained by the inflation biaxial stretching method, the inner diameter of the tube is covered with a metal drum having a diameter of 0.90 to 1.05 times the inner diameter required in the previous step and heat-shrinked. Is about 0.90 to 1.05 times the required inner diameter when a seamless belt is used. At the same time, the tube is heat-set during heating to remove the internal strain, so that a seamless belt with little heat shrinkage and good dimensional stability can be obtained even when used at high temperature. Therefore, in this case, there is no problem even if the inner diameter is 1.05 times or more.
【００１７】本発明の積層シームレスベルトの外層を構
成する円筒形の熱可塑性エラストマーチューブも、必要
に応じて着色剤を添加した熱可塑性エラストマー（Ｂ）
を溶融して環状ダイからチューブ状に押出し、冷却後巻
取る、いわゆるインフレーション製膜法にて得ることが
できる。この熱可塑性エラストマーチューブの厚みは２
０〜１００μが好ましく、厚みが２０μ未満では熱可塑
性エラストマーチューブの製造が難しく、逆に１００μ
を超えるとベルトの全体の厚みが増し、剛性がつよくな
るという問題が発生するので好ましくない。この場合、
チューブの内径は、シームレスベルトとしたときに必要
な内径の０．７０〜１．００倍程度になるようにするの
が望ましい。内径が０．７０倍未満では後述する円筒形
のドラムに挿入はできるが、成形加工をおこなったシー
ムレスベルトをドラムから取り外した際に、残存する収
縮応力の為、シームレスベルトが変形しやすくなり、内
径が１．００倍を越えると逆に該円筒形のドラムとの間
にギャップができ、シワとか気泡が発生してシームレス
ベルト表面の平滑性が悪くなるので好ましくない。The cylindrical thermoplastic elastomer tube constituting the outer layer of the laminated seamless belt of the present invention is also a thermoplastic elastomer (B) to which a coloring agent is added if necessary.
Can be obtained by a so-called inflation film forming method in which is melted, extruded into a tube shape from an annular die, cooled and wound up. The thickness of this thermoplastic elastomer tube is 2
0-100μ is preferable, and if the thickness is less than 20μ, it is difficult to produce a thermoplastic elastomer tube, and conversely 100μ
If it exceeds the range, the thickness of the entire belt increases, and the rigidity of the belt increases, which is not preferable. in this case,
It is desirable that the inner diameter of the tube be about 0.70 to 1.00 times the inner diameter required for a seamless belt. If the inner diameter is less than 0.70 times, it can be inserted into a cylindrical drum described later, but when the seamless belt that has been molded is removed from the drum, the seamless belt easily deforms due to residual shrinkage stress, On the contrary, when the inner diameter exceeds 1.00 times, a gap is formed between the cylindrical drum and the cylindrical drum, and wrinkles or bubbles are generated to deteriorate the smoothness of the seamless belt surface, which is not preferable.
【００１８】次いで、このようにして得られた熱可塑性
樹脂チューブ及び熱可塑性エラストマーチューブを一定
の長さに切断し、シームレスベルトとして必要な内径と
同じ外径を有する金属製ドラムに熱可塑性樹脂チュー
ブ、熱可塑性エラストマーチューブの順に重ねて被覆し
た後、更にその外側に剥離用上質紙、熱収縮性ポリエチ
レンテレフタレート樹脂チューブをかぶせて加熱処理す
る。加熱処理により熱可塑性エラストマーチューブが溶
融して、熱可塑性樹脂チューブと強固に接着するととも
に若干の皺や、弛みも除去され本発明の積層シームレス
ベルトが得られる。加熱温度は熱可塑性エラストマーの
軟化点以上、熱可塑性樹脂の融点以下であればよいが、
通常１８０〜２４０℃程度が選ばれる。また、加熱処理
の時間は３０分以上が好ましく、熱可塑性樹脂チューブ
と熱可塑性エラストマーチューブを十分接着するために
は５０分以上が特に好ましい。Next, the thermoplastic resin tube and the thermoplastic elastomer tube thus obtained are cut into a certain length, and the thermoplastic resin tube is formed on a metal drum having the same outer diameter as the inner diameter required for the seamless belt. Then, the thermoplastic elastomer tube is laminated and coated in this order, and then a release high-quality paper and a heat-shrinkable polyethylene terephthalate resin tube are further covered on the outer side of the tube for heat treatment. By the heat treatment, the thermoplastic elastomer tube is melted and firmly adhered to the thermoplastic resin tube, and some wrinkles and slack are removed to obtain the laminated seamless belt of the present invention. The heating temperature may be higher than the softening point of the thermoplastic elastomer and lower than the melting point of the thermoplastic resin,
Usually, about 180 to 240 ° C. is selected. The heat treatment time is preferably 30 minutes or longer, and particularly preferably 50 minutes or longer in order to sufficiently bond the thermoplastic resin tube and the thermoplastic elastomer tube.
【００１９】加熱処理後、上記金属製ドラムから積層チ
ューブを取り出し、必要な幅にカットして本発明の用紙
搬送用積層シームレスベルトを得る。After the heat treatment, the laminated tube is taken out from the metal drum and cut into a required width to obtain the laminated seamless belt for carrying a sheet of the present invention.
【００２０】[0020]
【実施例】以下に本発明を実施例にて詳細に説明する。
なお、得られた用紙搬送用積層シームレスベルトは下記
の試験方法によって評価した。 滑り摩擦抵抗：ＡＳＴＭ Ｄ１８９４に準拠し、熱可塑
性エラストマー表面と用紙（コピー用紙）との静止摩擦
係数を測定した。 用紙搬送性 ：得られたシームレスベルトを２本のロー
ラにより駆動させて、用紙を搬送させ搬送中の用紙のズ
レを測定した。 ○：０．１ｍｍ未満 △：０．１〜０．２ｍｍ
×：０．２ｍｍ超 １４０℃収縮率：ＪＩＳ Ｃ２３１８に準拠し１４０℃
のオーブン中で測定した。 Ｌ1：加熱前の標点間距離（ｍｍ） Ｌ2：加熱後の標点間距離（ｍｍ） 光線透過率：ＡＳＴＭ Ｄ１００３に準拠しデジタル濁
度計ＮＤＨ−２０Ｄ（日本電色工業製）にて測定した。 誤動作の発生：光線反射形センサーを使用して、ベルト
上の用紙の有無を１００回測定し、誤動作がない場合は
○、誤動作が１回以上有った場合は×とした。 強度、伸び：ＡＳＴＭ Ｄ８８２に準拠し、オートグラ
フＤＳＳ−５０００（島津製作所製）にて測定した。EXAMPLES The present invention will be described in detail below with reference to examples.
The obtained laminated seamless belt for paper transport is as follows.
The test method was evaluated. Sliding friction resistance: Thermoplastic according to ASTM D1894
Static friction between the surface of the elastomer and the paper (copy paper)
The coefficient was measured. Paper transportability: Use the obtained seamless belt with two ropes.
Drive the paper to transport the paper, and
Was measured. ○: less than 0.1 mm △: 0.1 to 0.2 mm
×: over 0.2 mm 140 ° C Shrinkage rate: 140 ° C according to JIS C2318
Measured in the oven. L1: Gauge distance before heating (mm) L2: Distance between gauge marks after heating (mm) Light transmittance: Digital turbidity according to ASTM D1003
It was measured with a densitometer NDH-20D (manufactured by Nippon Denshoku Industries Co., Ltd.). Occurrence of malfunction: Using the light reflection type sensor, the belt
If there is no malfunction after measuring the presence of the above paper 100 times
◯, when there was one or more malfunctions, it was marked as x. Strength and elongation: In accordance with ASTM D882, autograph
Fu DSS-5000 (manufactured by Shimadzu Corporation) was used for measurement.
【００２１】製造例１ ポリエーテルエーテルケトン樹脂（以下ＰＥＥＫ樹脂と
称する。ＩＭＰＥＲＩＡＬ ＣＨＥＭＩＣＡＬ ＩＮＤ
ＵＳＴＲＩＥＳ社製、ガラス転移温度１４３℃）を口径
６０ｍｍ環状ダイスより４００℃で溶融して押出し、冷
却後この未延伸チューブを円筒状加熱装置により１７０
℃まで加熱後、チューブ内に空気を導入して、縦方向に
３倍、横方向に３倍延伸して内径１８０ｍｍ、厚み４２
μのＰＥＥＫ樹脂二軸延伸チューブを得た。Production Example 1 Polyether ether ketone resin (hereinafter referred to as PEEK resin. IMPERIAL CHEMICAL IND)
USTRIES, glass transition temperature 143 ° C.) is melted and extruded at 400 ° C. from an annular die having a diameter of 60 mm, and after cooling, the unstretched tube is heated to 170 by a cylindrical heating device.
After heating to ℃, introduce air into the tube and stretch 3 times in the longitudinal direction and 3 times in the transverse direction to obtain an inner diameter of 180 mm and a thickness of 42.
A PEEK resin biaxially stretched tube of μ was obtained.
【００２２】製造例２ ポリエーテルサルホン樹脂（以下ＰＥＳ樹脂と称する。
ＩＭＰＥＲＩＡＬ ＣＨＥＭＩＣＡＬ ＩＮＤＵＳＴＲ
ＩＥＳ社製、ガラス転移温度２２５℃）を口径１００ｍ
ｍ環状ダイスより３４０℃で溶融して押出しインフレー
ション製膜法により、内径１４８ｍｍ、厚み５１μのＰ
ＥＳ樹脂チューブを得た。Production Example 2 Polyethersulfone resin (hereinafter referred to as PES resin).
IMPERIAL CHEMICAL INDUSTR
Made by IES, glass transition temperature 225 ° C), caliber 100m
Melted at 340 ° C. from an m-ring die and extruded by an inflation film forming method to obtain P having an inner diameter of 148 mm and a thickness of 51 μm.
An ES resin tube was obtained.
【００２３】製造例３ ポリアリレート樹脂（以下ＰＡＲ樹脂と称する。商品名
Ｕポリマー、ユニチカ社製、ガラス転移温度１９０℃）
を口径１００ｍｍ環状ダイスより３００℃で溶融して押
出しインフレーション製膜法により、内径１４８ｍｍ、
厚み５１μのＰＡＲ樹脂チューブを得た。Production Example 3 Polyarylate resin (hereinafter referred to as PAR resin, trade name U polymer, manufactured by Unitika Ltd., glass transition temperature 190 ° C.)
Is melted at a temperature of 300 ° C. from an annular die having a diameter of 100 mm and extruded by an inflation film forming method to have an inner diameter of 148 mm,
A PAR resin tube having a thickness of 51 μ was obtained.
【００２４】製造例４ カーボンブラックを３重量％混入したポリウレタンエラ
ストマー（商品名エラストラン、武田バーディッシュウ
レタン工業社製）を口径１００ｍｍ環状ダイスより１９
５℃で溶融して押出しインフレーション製膜法により、
内径１４５ｍｍ、厚み５２μのポリウレタン樹脂チュー
ブを得た。Production Example 4 A polyurethane elastomer containing 3% by weight of carbon black (trade name Elastollan, manufactured by Takeda Birdish Urethane Industry Co., Ltd.) was used with a ring die having a diameter of 100 mm.
By melting at 5 ° C and extruding an inflation film forming method,
A polyurethane resin tube having an inner diameter of 145 mm and a thickness of 52 μ was obtained.
【００２５】製造例５ カーボンブラックを３重量％混入したポリエステルエラ
ストマー（商品名ハイトレル、東レデュポン社製）を口
径１００ｍｍ環状ダイスより１９５℃で溶融して押出
し、インフレーション製膜法によりチューブ内に空気を
導入、膨張させ、引取り装置より引取り、内径１４５ｍ
ｍ、厚み５２μのポリエステル樹脂チューブを得た。Production Example 5 A polyester elastomer (trade name Hytrel, manufactured by Toray DuPont) mixed with 3% by weight of carbon black was melted and extruded from a circular die having a diameter of 100 mm at 195 ° C., and air was blown into the tube by an inflation film forming method. Introduce, expand, take out from take-off device, inner diameter 145m
A polyester resin tube having a thickness of m and a thickness of 52 μm was obtained.
【００２６】実施例１ 外径１５０ｍｍの金属ドラムに製造例２でえられた内径
１４８ｍｍ、厚み５１μのＰＥＳ樹脂チューブおよびそ
の外側にカーボンブラックを添加しない以外は製造例４
と同様な方法でえられた内径１４５ｍｍ、厚み５２μの
ポリウレタン樹脂チューブを被覆し、更にその外側に剥
離用上質紙、熱収縮性ポリエチレンテレフタレート樹脂
チューブをかぶせて２２０℃で５０分加熱を行ない、内
径１５０ｍｍ、厚み１００μの積層シームレスベルトを
得た。得られた積層シームレスベルトの諸物性を表１に
示す。Example 1 Production Example 4 except that a PES resin tube having an inner diameter of 148 mm and a thickness of 51 μ obtained in Production Example 2 and a carbon black were not added to the outside of the metal drum having an outer diameter of 150 mm.
A polyurethane resin tube with an inner diameter of 145 mm and a thickness of 52 μ obtained in the same manner as described above was covered, and a high-quality paper for peeling and a heat-shrinkable polyethylene terephthalate resin tube were further covered on the outer surface of the tube and heated at 220 ° C. for 50 minutes. A laminated seamless belt having a thickness of 150 mm and a thickness of 100 μm was obtained. Table 1 shows the physical properties of the obtained laminated seamless belt.
【００２７】実施例２ 製造例１で得られた内径１８０ｍｍ、厚み４２μのＰＥ
ＥＫ二軸延伸樹脂チューブを外径１４８ｍｍの金属ドラ
ムにかぶせて２３０℃で２０分間加熱して収縮させると
同時に熱セットを行ない、内径１４８ｍｍ、厚み５１μ
のＰＥＥＫ樹脂の単層シームレスベルトを得た。次に内
径１５０ｍｍの金属ドラムに該ＰＥＥＫ樹脂シームレス
ベルト、製造例４で得られた内径１４５ｍｍ、厚み５２
μのポリウレタン樹脂チューブの順に被覆し、更にその
外側に剥離用上質紙、熱収縮性ポリエチレンテレフタレ
ート樹脂チューブをかぶせて１８０℃で５０分加熱を行
ない、内径１５０ｍｍ、厚み１００μの積層シームレス
ベルトを得た。得られた積層シームレスベルトの諸物性
を表１に示す。Example 2 PE having an inner diameter of 180 mm and a thickness of 42 μ obtained in Production Example 1
The EK biaxially stretched resin tube is placed on a metal drum having an outer diameter of 148 mm, heated at 230 ° C. for 20 minutes to shrink and simultaneously heat-set, and an inner diameter of 148 mm and a thickness of 51 μ.
A single layer seamless belt of PEEK resin was obtained. Next, the PEEK resin seamless belt on a metal drum having an inner diameter of 150 mm, the inner diameter of 145 mm obtained in Production Example 4, and a thickness of 52
A polyurethane resin tube having a thickness of μ was coated in this order, and a fine paper for peeling and a heat-shrinkable polyethylene terephthalate resin tube were further covered on the outer side of the tube, followed by heating at 180 ° C. for 50 minutes to obtain a laminated seamless belt having an inner diameter of 150 mm and a thickness of 100 μ. .. Table 1 shows the physical properties of the obtained laminated seamless belt.
【００２８】実施例３ 製造例１で得られた内径１８０ｍｍ、厚み４２μのＰＥ
ＥＫ二軸延伸樹脂チューブを外径１４８ｍｍの金属ドラ
ムにかぶせて２３０℃で２０分間加熱して収縮させると
同時に熱セットを行ない、内径１４８ｍｍ、厚み５１μ
のＰＥＥＫ樹脂の単層シームレスベルトを得た。次に内
径１５０ｍｍの金属ドラムに該ＰＥＥＫ樹脂シームレス
ベルト、製造例５で得られた内径１４５ｍｍ、厚み５２
μのポリエステルエラストマーチューブの順に被覆し、
更にその外側に剥離用上質紙、熱収縮性ポリエチレンテ
レフタレート樹脂チューブをかぶせて１８０℃で５０分
加熱を行ない、内径１５０ｍｍ、厚み１００μの積層シ
ームレスベルトを得た。得られた積層シームレスベルト
の諸物性を表１に示す。Example 3 PE having an inner diameter of 180 mm and a thickness of 42 μ obtained in Production Example 1
The EK biaxially stretched resin tube is placed on a metal drum having an outer diameter of 148 mm, heated at 230 ° C. for 20 minutes to shrink and simultaneously heat-set, and an inner diameter of 148 mm and a thickness of 51 μ.
A single layer seamless belt of PEEK resin was obtained. Next, the PEEK resin seamless belt on a metal drum having an inner diameter of 150 mm, the inner diameter of 145 mm obtained in Production Example 5, and a thickness of 52
Coat μ polyester elastomer tube in order,
Further, a release high-quality paper and a heat-shrinkable polyethylene terephthalate resin tube were covered on the outer side thereof and heated at 180 ° C. for 50 minutes to obtain a laminated seamless belt having an inner diameter of 150 mm and a thickness of 100 μm. Table 1 shows the physical properties of the obtained laminated seamless belt.
【００２９】実施例４ 外径１５０ｍｍの金属ドラムに製造例２で得られた内径
１４８ｍｍ、厚み５１μのＰＥＳ樹脂チューブおよびそ
の外側に製造例４で得られた内径１４５ｍｍ、厚み５２
μのポリウレタン樹脂チューブを被覆し、更にその外側
に剥離用上質紙、熱収縮性ポリエチレンテレフタレート
樹脂チューブをかぶせて２２０℃で５０分加熱を行な
い、内径１５０ｍｍ、厚み１００μの積層シームレスベ
ルトを得た。得られた積層シームレスベルトの諸物性を
表１に示す。Example 4 A PES resin tube having an inner diameter of 148 mm and a thickness of 51 μ obtained in Production Example 2 on a metal drum having an outer diameter of 150 mm, and an outer diameter of 145 mm and a thickness 52 obtained in Production Example 4 on the outside thereof.
A polyurethane resin tube having a thickness of µ was coated, and a fine paper for peeling and a heat-shrinkable polyethylene terephthalate resin tube were further covered on the outer side of the tube, followed by heating at 220 ° C for 50 minutes to obtain a laminated seamless belt having an inner diameter of 150 mm and a thickness of 100 µ. Table 1 shows the physical properties of the obtained laminated seamless belt.
【００３０】実施例５ 外径１５０ｍｍの金属ドラムに製造例２で得られた内径
１４８ｍｍ、厚み５１μのＰＥＳ樹脂チューブおよびそ
の外側に製造例５で得られた内径１４５ｍｍ、厚み５２
μのポリエステルエラストマーチューブを被覆し、更に
その外側に剥離用上質紙、熱収縮性ポリエチレンテレフ
タレート樹脂チューブをかぶせて２２０℃で５０分加熱
を行ない、内径１５０ｍｍ、厚み１００μの積層シーム
レスベルトを得た。得られた積層シームレスベルトの諸
物性を表１に示す。Example 5 A PES resin tube having an inner diameter of 148 mm and a thickness of 51 μ obtained in Production Example 2 on a metal drum having an outer diameter of 150 mm and an outer diameter of 145 mm and an thickness of 52 obtained in Production Example 5 on the outside thereof.
A polyester elastomer tube having a thickness of 100 μm was coated, and a fine paper for peeling and a heat-shrinkable polyethylene terephthalate resin tube were further covered on the outer surface of the tube, followed by heating at 220 ° C. for 50 minutes to obtain a laminated seamless belt having an inner diameter of 150 mm and a thickness of 100 μm. Table 1 shows the physical properties of the obtained laminated seamless belt.
【００３１】実施例６ 外径１５０ｍｍの金属ドラムに製造例３で得られた内径
１４８ｍｍ、厚み５１μのポリアリレート樹脂チューブ
およびその外側に製造例４で得られた内径１４５ｍｍ、
厚み５２μのポリウレタン樹脂チューブを被覆し、更に
その外側に剥離用上質紙、熱収縮性ポリエチレンテレフ
タレート樹脂チューブをかぶせて２００℃で５０分加熱
を行ない、内径１５０ｍｍ、厚み１００μの積層シーム
レスベルトを得た。得られた積層シームレスベルトの諸
物性を表１に示す。Example 6 A metal drum having an outer diameter of 150 mm, an inner diameter of 148 mm obtained in Production Example 3, a polyarylate resin tube having a thickness of 51 μ and an outer diameter of 145 mm obtained in Production Example 4 on the outer side thereof.
A 52 μm-thick polyurethane resin tube was covered, and a release high-quality paper and a heat-shrinkable polyethylene terephthalate resin tube were further covered on the outer side of the polyurethane resin tube and heated at 200 ° C. for 50 minutes to obtain a laminated seamless belt having an inner diameter of 150 mm and a thickness of 100 μm. .. Table 1 shows the physical properties of the obtained laminated seamless belt.
【００３２】比較例１ 製造例１で得られた内径１８０ｍｍ、厚み４２μのＰＥ
ＥＫ二軸延伸樹脂チューブを外径１４８ｍｍの金属ドラ
ムにかぶせて２３０℃で２０分間収縮させると同時に熱
セットを行ない、内径１４８ｍｍ、厚み５１μのＰＥＥ
Ｋ樹脂の単層シームレスベルトを得た。得られた単層シ
ームレスベルトを用紙搬送用ベルトとして使用したとこ
ろ表面の滑り摩擦抵抗が０．４２と小さく滑り易い為、
搬送途中に用紙がずれ、印字が不鮮明になった。諸物性
を表１に示す。Comparative Example 1 PE having an inner diameter of 180 mm and a thickness of 42 μ obtained in Production Example 1
The EK biaxially stretched resin tube is placed on a metal drum with an outer diameter of 148 mm and contracted at 230 ° C. for 20 minutes while heat setting is performed. PEE with an inner diameter of 148 mm and a thickness of 51 μm.
A single layer seamless belt of K resin was obtained. When the obtained single-layer seamless belt was used as a belt for transporting paper, the sliding friction resistance on the surface was as small as 0.42 and it was easy to slip.
The paper was misaligned during transportation and the print became unclear. Various physical properties are shown in Table 1.
【００３３】比較例２ 外径１５０ｍｍの金属ドラムに製造例２で得られた内径
１４８ｍｍ、厚み５１μのＰＥＳ樹脂チューブをかぶせ
て２２０℃で５０分加熱を行ない、内径１５０ｍｍ、厚
み５０μの単層シームレスベルトを得た。得られた単層
シームレスベルトを用紙搬送用ベルトとして使用したと
ころ表面平滑性が悪く、又、摩擦抵抗が０．４０と小さ
く滑り易い為、搬送用シームレスベルトとしては使用で
きなかった。諸物性を表１に示す。Comparative Example 2 A metal drum having an outer diameter of 150 mm was covered with a PES resin tube having an inner diameter of 148 mm and a thickness of 51 μ obtained in Production Example 2 and heated at 220 ° C. for 50 minutes to obtain a single layer seamless material having an inner diameter of 150 mm and a thickness of 50 μ. Got the belt. When the obtained single-layer seamless belt was used as a sheet conveying belt, the surface smoothness was poor, and the friction resistance was 0.40, which was small and slippery, so that it could not be used as a conveying seamless belt. Various physical properties are shown in Table 1.
【００３４】比較例３ ポリエチレンテレフタレート樹脂（以下ＰＥＴ樹脂と称
する。三井ペット社製、ガラス転移温度７８℃）を口径
６０ｍｍ環状ダイスより３００℃で溶融して押出し、冷
却後この未延伸チューブを円筒状加熱装置により９０℃
まで加熱後、チューブ内に空気を導入して、縦方向に３
倍、横方向に３倍に延伸して内径１８０ｍｍ、厚み４２
μのＰＥＴ樹脂二軸延伸チューブを得た。次いで、該Ｐ
ＥＴ樹脂二軸延伸チューブを外径１５０ｍｍの金属ドラ
ムにかぶせて１８０℃で２０分間加熱して収縮させると
同時に熱セットを行ないＰＥＴ樹脂の単層のシームレス
ベルトを得た。次いで、外径１５０ｍｍの金属ドラムに
該ＰＥＴ樹脂の単層シームレスベルト、製造例４で得ら
れた内径１４５ｍｍ、厚み５２μのポリウレタン樹脂チ
ューブの順に被覆し、更にその外側に剥離用上質紙、熱
収縮性ポリエチレンテレフタレート樹脂チューブをかぶ
せて１８０℃で５０分加熱を行ない、内径１５０ｍｍ、
厚み１００μの積層シームレスベルトを得た。このシー
ムレスベルトを１４０℃の環境下で使用したところ収縮
が大きく搬送用シームレスベルトとしては使用できなか
った。諸物性を表１に示す。Comparative Example 3 A polyethylene terephthalate resin (hereinafter referred to as PET resin, glass transition temperature 78 ° C., manufactured by Mitsui PET Co., Ltd.) was melted and extruded from a ring die having a diameter of 60 mm at 300 ° C., and after cooling, this unstretched tube was cylindrical. 90 ℃ by heating device
After heating up to 3 hours, introduce air into the tube, and
Doubled and stretched 3 times in the transverse direction to an inner diameter of 180 mm and a thickness of 42
A PET biaxially stretched tube of μ was obtained. Then, the P
The ET resin biaxially stretched tube was placed on a metal drum having an outer diameter of 150 mm, heated at 180 ° C. for 20 minutes to shrink, and at the same time heat set to obtain a PET resin single-layer seamless belt. Then, a metal drum having an outer diameter of 150 mm was coated with the PET resin single-layer seamless belt, the inner diameter of 145 mm obtained in Production Example 4 and a polyurethane resin tube having a thickness of 52 μ, in that order, and the outside thereof was covered with a release quality paper and heat shrinkable. With a flexible polyethylene terephthalate resin tube and heating at 180 ° C for 50 minutes
A laminated seamless belt having a thickness of 100 μ was obtained. When this seamless belt was used in an environment of 140 ° C., it contracted greatly and could not be used as a transport seamless belt. Various physical properties are shown in Table 1.
【００３５】比較例４ 製造例４で得られたポリウレタン樹脂チューブをそのま
まシームレスベルトとして使用したが、このシームレス
ベルトは１４０℃の環境下では弾性率が大幅に低下し
て、ベルトが張力により伸びてしまって搬送用シームレ
スベルトとして使用できなかった。Comparative Example 4 The polyurethane resin tube obtained in Production Example 4 was used as it was as a seamless belt. However, in this seamless belt, the elastic modulus significantly decreased under the environment of 140 ° C., and the belt was stretched by the tension. It could not be used as a seamless belt for transportation.
【００３６】[0036]
【表１】 [Table 1]
【００３７】[0037]
【発明の効果】本発明のシームレスベルトは、基材層と
して内層にガラス転移点が１４０℃以上の熱可塑性樹脂
（Ａ）を用いているので１４０℃を超える環境下でも弾
性率の急激な低下による伸びや熱収縮に基づく寸法変化
が極めて小さいという特徴を有し、又、外層に滑り摩擦
係数が０．６以上の熱可塑性エラストマー（Ｂ）を用い
ているため用紙搬送時に紙の位置がずれたりすることな
く正確な搬送が可能である。更に、従来上記熱可塑性樹
脂（Ａ）は従来の汎用プラスチックに比べて製膜が困難
であり、これらの樹脂に着色剤等を添加することは極め
て困難であったが、外層の熱可塑性エラストマー（Ｂ）
に着色剤等を添加することにより、機械的性質や製膜性
を低下させることなく、光学センサーの誤動作のない用
紙搬送用積層シームレスベルトを容易に得ることが可能
である。このようなシームレスベルトは比較的低融点の
熱可塑性エラストマー（Ｂ）を使用しているにもかかわ
らず、１４０℃を超える高温下でも機械的性質や寸法変
化の極めて少ないインクジェットプリンター等の用紙搬
送ベルトとして好適な性質を有している。The seamless belt of the present invention uses the thermoplastic resin (A) having a glass transition point of 140 ° C. or higher as the inner layer as the base material layer, so that the elastic modulus sharply decreases even in an environment exceeding 140 ° C. The feature is that the dimensional change due to elongation and heat shrinkage due to heat transfer is extremely small, and because the outer layer is made of a thermoplastic elastomer (B) with a coefficient of sliding friction of 0.6 or more, the position of the paper shifts when it is conveyed. Accurate transportation is possible without causing problems. Further, conventionally, the thermoplastic resin (A) is more difficult to form a film than conventional general-purpose plastics, and it has been extremely difficult to add a colorant or the like to these resins, but the thermoplastic elastomer ( B)
By adding a coloring agent or the like to the laminated seamless belt for paper transport without causing malfunction of the optical sensor, it is possible to easily obtain the laminated seamless belt without deteriorating the mechanical properties and film-forming properties. Although such a seamless belt uses a thermoplastic elastomer (B) having a relatively low melting point, it has a very small change in mechanical properties and dimensions even at a high temperature of 140 ° C. It has suitable properties as
Claims (4)
可塑性樹脂（Ａ）からなり、外層が表面の滑り摩擦係数
０．６以上の熱可塑性エラストマー（Ｂ）からなること
を特徴とする用紙搬送用積層シームレスベルト。1. A sheet conveying method, wherein an inner layer is made of a thermoplastic resin (A) having a glass transition temperature of 140 ° C. or more, and an outer layer is made of a thermoplastic elastomer (B) having a surface sliding friction coefficient of 0.6 or more. Laminated seamless belt for.
ポリエーテルサルホン、又はポリエーテルエーテルケト
ンであることを特徴とする請求項１記載の用紙搬送用積
層シームレスベルト。2. The thermoplastic resin (A) is polyarylate,
The laminated seamless belt for conveying paper according to claim 1, wherein the laminated seamless belt is polyether sulfone or polyether ether ketone.
系エラストマー、又はエステル系エラストマーであるこ
とを特徴とする請求項１記載の用紙搬送用積層シームレ
スベルト。3. The laminated seamless belt for conveying paper according to claim 1, wherein the thermoplastic elastomer (B) is a urethane elastomer or an ester elastomer.
ストマー（Ｂ）からなり、光線透過率が１０％以下であ
ることを特徴とする請求項１又は３記載の用紙搬送用積
層シームレスベルト。4. The laminated seamless belt for conveying paper according to claim 1, wherein the outer layer is made of a thermoplastic elastomer (B) containing a colorant and has a light transmittance of 10% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4093911A JPH05261839A (en) | 1992-03-18 | 1992-03-18 | Laminated seamless belt for conveying paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4093911A JPH05261839A (en) | 1992-03-18 | 1992-03-18 | Laminated seamless belt for conveying paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05261839A true JPH05261839A (en) | 1993-10-12 |
Family
ID=14095662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4093911A Pending JPH05261839A (en) | 1992-03-18 | 1992-03-18 | Laminated seamless belt for conveying paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05261839A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1014203A3 (en) * | 1998-12-22 | 2000-10-25 | Canon Kabushiki Kaisha | Endless belt for electrophotography, process for producing the endless belt, and image forming apparatus having the endless belt |
| EP0976523A3 (en) * | 1998-07-28 | 2001-10-31 | Canon Kabushiki Kaisha | Process for producing endless belt, and image forming apparatus |
-
1992
- 1992-03-18 JP JP4093911A patent/JPH05261839A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0976523A3 (en) * | 1998-07-28 | 2001-10-31 | Canon Kabushiki Kaisha | Process for producing endless belt, and image forming apparatus |
| EP1014203A3 (en) * | 1998-12-22 | 2000-10-25 | Canon Kabushiki Kaisha | Endless belt for electrophotography, process for producing the endless belt, and image forming apparatus having the endless belt |
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