JPH07308973A - Base material for endless belt and manufacture of the belt using the same material - Google Patents
Base material for endless belt and manufacture of the belt using the same materialInfo
- Publication number
- JPH07308973A JPH07308973A JP6102505A JP10250594A JPH07308973A JP H07308973 A JPH07308973 A JP H07308973A JP 6102505 A JP6102505 A JP 6102505A JP 10250594 A JP10250594 A JP 10250594A JP H07308973 A JPH07308973 A JP H07308973A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- layers
- ptfe
- belt
- cloth
- 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
- 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
-
- 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
-
- 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
- B29C66/40—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
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
-
- 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
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4324—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms for making closed loops, e.g. belts
-
- 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
- B29C66/72—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 structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
- B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
- B29C66/72141—Fibres of continuous length
-
- 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
- B29C66/72—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 structure of the material of the parts to be joined
- B29C66/723—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 structure of the material of the parts to be joined being multi-layered
-
- 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
- B29C66/72—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 structure of the material of the parts to be joined
- B29C66/729—Textile or other fibrous material made from plastics
- B29C66/7292—Textile or other fibrous material made from plastics coated
-
- 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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- 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
- B29C66/45—Joining of substantially the whole surface of the 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
- B29C66/72—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 structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
- B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
-
- 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
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
- B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
-
- 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
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
- B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
- B29C66/91443—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile
- B29C66/91445—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile by steps
-
- 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
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
-
- 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
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
- B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
- B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
- B29C66/91931—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
- B29C66/91933—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined higher than said fusion temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts
- B29L2031/7092—Conveyor belts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明はエンドレスベルトの製造
に用いる基材および該基材を用いるエンドレスベルトの
製造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 base material used for manufacturing an endless belt and a method for manufacturing an endless belt using the base material.
【0002】[0002]
【従来の技術】ポリテトラフルオロエチレン(以下、
「PTFE」という)を含浸焼成した布材の両端を接合
して成るエンドレスベルトは耐熱性、非粘着性、耐薬品
性等に優れており、ヒートシール装置に組み込むベル
ト、粘着性物質の離型用ベルト、薬品搬送用ベルト等と
して広く用いられている。2. Description of the Related Art Polytetrafluoroethylene (hereinafter,
An endless belt made by joining both ends of a cloth material impregnated with "PTFE" and baked is excellent in heat resistance, non-adhesiveness, chemical resistance, etc. Widely used as a belt for chemicals, a belt for transporting chemicals, etc.
【0003】このベルトの製造法としては下記〜の
工程を順次行う方法が既に知られている。As a method of manufacturing this belt, a method of sequentially performing the following steps 1 to 3 is already known.
【0004】ガラスクロスのような布材にPTFEの
水性ディスパージョンを含浸させた後PTFEの融点以
上に加熱することにより、ガラスクロスを形成している
繊維にPTFEを含浸すると共に該クロスの表面に焼成
されたPTFE層を形成する工程、 図5に示すように焼成されたPTFE層3A、3Bの
形成された布材1と、同じく焼成されたPTFE層4
A、4Bの形成された布材2をその両端が互いにずれる
ようにすると共にその間にテトラフルオロエチレン−ヘ
キサフルオロプロピレン共重合体(以下、「FEP」と
いう)シート7を配置し、熱プレス板を順次移動させな
がら加熱加圧することにより、布材1と2をFEPシー
トにより熱融着して一体化する工程、 図6に示すように一体化された布材の両端を突き合わ
せると共に、この突き合わせによって生ずる空隙にFE
Pシート8を配置し、該突き合わせ部を加熱加圧するこ
とにより、突き合わせ部をFEPシートの熱融着により
一体化してエンドレスベルトを形成する工程。[0004] A cloth material such as glass cloth is impregnated with an aqueous dispersion of PTFE and then heated to a temperature above the melting point of PTFE to impregnate the fibers forming the glass cloth with PTFE and coat the surface of the cloth. Step of forming fired PTFE layer, cloth material 1 having fired PTFE layers 3A and 3B formed thereon as shown in FIG. 5, and PTFE layer 4 also fired
The fabric material 2 on which A and 4B are formed is arranged so that both ends thereof are displaced from each other, and a tetrafluoroethylene-hexafluoropropylene copolymer (hereinafter, referred to as “FEP”) sheet 7 is arranged between them to form a hot press plate. A step of heat-pressing the cloth materials 1 and 2 while sequentially moving them to fuse them together by an FEP sheet to integrate them, and as shown in FIG. FE in the void created by
A step of arranging the P sheet 8 and heating and pressing the abutting portion to integrate the abutting portion by thermal fusion of the FEP sheets to form an endless belt.
【0005】[0005]
【発明が解決しようとする課題】上記方法により得られ
るエンドレスベルトは突き合わせ部においても段差がな
く、従って、ロール間に掛け渡して作動させたとき、蛇
行等の不都合を生じ難いものであり、この点では好まし
いものである。The endless belt obtained by the above method has no step even at the abutting portion, and therefore, when it is operated by being stretched between the rolls, it is difficult to cause inconvenience such as meandering. It is preferable from the point of view.
【0006】しかし、その製造に際して用いる熱プレス
板の面積は布材の面積に比べてはるかに小さく、布材相
互をFEPシートにより熱融着するとき、その全体を一
度に加圧することは到底できず、プレス板を順次移動さ
せながら加圧を繰り返さざるを得ず、作業能率が悪いと
いう問題がある。この問題は布材が大面積である程重大
となる。However, the area of the hot press plate used in the manufacturing thereof is much smaller than the area of the cloth material, and when the cloth materials are heat-sealed together by the FEP sheet, it is impossible to press the whole material at once. Therefore, there is a problem that work efficiency is poor because the pressurization must be repeated while sequentially moving the press plate. This problem becomes more serious as the area of the cloth material increases.
【0007】従って、本発明はエンドレスベルトを能率
よく製造し得るベルト用基材および該基材を用いてベル
トを容易に製造する方法を提供することを目的とする。Therefore, an object of the present invention is to provide a base material for a belt which can efficiently manufacture an endless belt and a method for easily manufacturing a belt using the base material.
【0008】[0008]
【課題を解決するための手段】本発明に係るエンドレス
ベルト用基材は、少なくとも片面に未焼成のPTFE層
が形成された布材相互を、その未焼成PTFE層が向き
合うように接合したものであり、しかも、両端部におい
て未焼成PTFE層相互の界面で剥離可能なものであ
る。A base material for an endless belt according to the present invention is one in which cloth materials having an unsintered PTFE layer formed on at least one surface are joined together so that the unsintered PTFE layers face each other. In addition, both ends can be peeled at the interfaces between the unsintered PTFE layers.
【0009】図1は本発明に係るエンドレスベルト用基
材の実例を示している。図1において、1および2は布
材であり、この基材を用いて得られるベルトに強度を与
えるものであり、例えば、ガラスクロス等の無機繊維か
ら成るものや、芳香族ポリアミド繊維等の有機繊維から
成るものが用いられる。FIG. 1 shows an example of a base material for an endless belt according to the present invention. In FIG. 1, 1 and 2 are cloth materials, which give strength to a belt obtained by using this base material, for example, those made of inorganic fibers such as glass cloth and organic materials such as aromatic polyamide fibers. Fibers are used.
【0010】一方の布材1の両面には焼成されたPTF
E層3A、3Bが形成されており、この焼成されたPT
FE層3A、3Bを介して未焼成のPTFE層5A、5
Bが設けられている。また、他方の布材2にも同様にそ
の両面に焼成されたPTFE層4A、4Bが形成され、
これらを介して未焼成のPTFE層6A、6Bが設けら
れている。On both sides of one cloth material 1 is fired PTF
E layers 3A and 3B are formed, and this fired PT is formed.
The unsintered PTFE layers 5A, 5 via the FE layers 3A, 3B
B is provided. Further, the other cloth material 2 is similarly formed with the baked PTFE layers 4A and 4B on both surfaces thereof,
The unsintered PTFE layers 6A and 6B are provided through these.
【0011】そして、両布材1と2はその未焼成PTF
E層5Aと6Aが向き合うようにして接合されている。
なお、これら両布材1と2はその両端部において、未焼
成PTFE層5Aと6Aの界面で剥離可能とされてい
る。Both cloth materials 1 and 2 are made of the unsintered PTF.
The E layers 5A and 6A are joined so as to face each other.
It should be noted that both cloth materials 1 and 2 can be peeled off at both ends thereof at the interface between the unsintered PTFE layers 5A and 6A.
【0012】このベルト用基材は、例えば、布材にPT
FE粉末の水性ディスパージョンを含浸させた後PTF
Eの融点以上の温度で加熱することにより焼成されたP
TFE層を形成し(必要により含浸と焼成を繰り返
す)、次いで、該焼成PTFE層上にPTFE粉末の水
性ディスパージョンを塗布し、PTFEの融点よりも低
い温度で加熱して分散溶媒である水を除去することによ
り未焼成のPTFE層を形成し(必要により塗布と加熱
を繰り返す)、その後、この布材2枚をその未焼成PT
FEが向き合うように重ね合わせて加圧することによ
り、両布材を未焼成PTFEの自己融着性により接合す
る方法により得ることができる。ここで用いるPTFE
粉末の水性ディスパージョンは、通常、PTFE粉末濃
度を約30〜60重量%に調整して用いる。This belt base material is, for example, a cloth material made of PT.
PTF after impregnated with aqueous dispersion of FE powder
P burned by heating at a temperature above the melting point of E
A TFE layer is formed (impregnation and firing are repeated if necessary), and then an aqueous dispersion of PTFE powder is applied onto the fired PTFE layer and heated at a temperature lower than the melting point of PTFE to remove water as a dispersion solvent. By removing it, an unsintered PTFE layer is formed (application and heating are repeated if necessary).
It can be obtained by a method of joining both cloth materials by self-fusing property of unsintered PTFE by overlapping and pressing so that the FEs face each other. PTFE used here
The aqueous dispersion of powder is usually used by adjusting the PTFE powder concentration to about 30 to 60% by weight.
【0013】このベルト用基材はその両端部において、
未焼成PTFE層5Aと6Aの界面で剥離可能とする必
要がある。ベルト用基材の両端部において、未焼成PT
FE層相互の界面で剥離可能とするためには、該両端部
における未焼成PTFE層5Aと6Aとの接着力を50
〜500g/cmとするのが好適であることが判明して
いる。この接着力は万能引張試験機(東洋ボールドウィ
ン社製、テンシロン)を用い、温度25℃、引張速度2
00mm/minの条件で90°ピーリング法により測
定した値である。This belt base material is
It is necessary to enable peeling at the interface between the unsintered PTFE layers 5A and 6A. At both ends of the belt base material, unbaked PT
In order to enable peeling at the interface between the FE layers, the adhesive force between the unsintered PTFE layers 5A and 6A at both ends is 50.
It has been found suitable to be ~ 500 g / cm. This adhesive force was measured using a universal tensile tester (Tensilon, manufactured by Toyo Baldwin Co., Ltd.) at a temperature of 25 ° C. and a pulling speed of 2
It is a value measured by the 90 ° peeling method under the condition of 00 mm / min.
【0014】ベルト用基材における未焼成PTFE層5
Aと6Aとの接着力を決定する主要因は、布材相互を接
合するときの加圧条件であり、接着力を上記範囲の値と
するには、加圧作業を、通常、温度20〜180℃、圧
力50〜300kg/cm2で行うようにする。Unsintered PTFE layer 5 in the belt substrate
The main factor that determines the adhesive force between A and 6A is the pressurizing condition when joining the cloth materials to each other. It is carried out at 180 ° C. and a pressure of 50 to 300 kg / cm 2 .
【0015】なお、本発明に係るベルト用基材はその両
端部においてのみ剥離できればよいのであり、両端部以
外の部分は剥離できなくてもよい。従って、両端部以外
の部分における未焼成PTFE層間の接着力は500g
/cmよりも大きくても支障はない。The belt base material according to the present invention only needs to be peelable at both ends thereof, and the portions other than both ends may not be peelable. Therefore, the adhesive strength between the unsintered PTFE layers in the parts other than both ends is 500 g.
There is no problem even if it is larger than / cm.
【0016】また、未焼成PTFE層は加圧により布材
相互を接合させるためのものであり、従って、図1にお
ける5Bおよび/または6Bは省略することもできる。Further, the unsintered PTFE layer is for bonding the cloth materials to each other by pressing, and therefore, 5B and / or 6B in FIG. 1 can be omitted.
【0017】次に、上記ベルト用基材を用いるエンドレ
スベルトの新規な製造法について述べる。この方法は少
なくとも片面に未焼成のPTFE層が形成された布材相
互を、その未焼成PTFE層が向き合うように接合した
ものであり、しかも、両端部において未焼成PTFE層
の界面で剥離可能なベルト用基材を用意し、この基材の
両端部を未焼成PTFE層相互の界面で剥離し、一方の
布材の片端と他方の布材の他端を切断して除去し、次い
で基材の両端を突き合わせ、この突き合わせ部を加圧す
ることにより接合してエンドレスベルトを形成し、その
後PTFEの融点以上に加熱することにより前記未焼成
のPTFE層を焼成することを特徴とするものである。Next, a novel method for producing an endless belt using the above belt base material will be described. In this method, cloth materials having a non-sintered PTFE layer formed on at least one surface are joined so that the non-sintered PTFE layers face each other, and furthermore, peeling is possible at both ends of the interface of the non-sintered PTFE layer. A base material for a belt is prepared, both ends of the base material are peeled off at the interfaces between the unsintered PTFE layers, one end of one cloth material and the other end of the other cloth material are cut and removed, and then The both ends are abutted, and the abutted portions are joined by being pressed to form an endless belt, and then the unsintered PTFE layer is fired by heating the endless belt to a temperature equal to or higher than the melting point of PTFE.
【0018】この方法は上記のベルト用基材を用いるも
のであり、先ず、図2に示すように基材の両端部を未焼
成PTFE層相互の界面で剥離する。この剥離は未焼成
PTFE層間の接着力が上記範囲とされているので、機
械的引き剥がしのような手段を採用して容易に行うこと
ができる。この剥離後、一方の布材の片端と、他方の布
材の他端を切断除去する。この切断により基材は図3に
示すような形状となる。This method uses the above-mentioned belt base material. First, as shown in FIG. 2, both ends of the base material are peeled off at the interfaces between the unsintered PTFE layers. This peeling can be easily performed by adopting a means such as mechanical peeling because the adhesive force between the unsintered PTFE layers is within the above range. After this peeling, one end of one cloth material and the other end of the other cloth material are cut and removed. By this cutting, the base material has a shape as shown in FIG.
【0019】次に、図4に示すように基材の両端を突き
合わせ、この突き合わせ部を加圧して接合する。突き合
わせ部の加圧は、例えば、プレス板により行うことがで
き、その際の圧力は、通常、50〜300kg/cm2
とされる。これにより突き合わせ部が無段差であるエン
ドレスベルトが形成される。なお、接合に際し、加熱す
ることもでき、その温度は例えば100〜150℃とす
ることができる。勿論、これより高温あるいは低温とす
ることもできる。Next, as shown in FIG. 4, both ends of the base material are abutted against each other, and the abutted portions are pressed and joined. Pressing of the butted portion can be performed by, for example, a press plate, and the pressure at that time is usually 50 to 300 kg / cm 2.
It is said that As a result, an endless belt having a stepless step is formed. In addition, at the time of joining, heating can be performed, and the temperature can be set to 100 to 150 ° C., for example. Of course, the temperature may be higher or lower than this.
【0020】このようにして基材をエンドレスベルト状
に形成した後、PTFEの融点以上に加熱して未焼成P
TFE層を焼成すれば、目的とするベルトを得ることが
できる。After the base material is thus formed into an endless belt shape, it is heated to a temperature not lower than the melting point of PTFE to obtain unbaked P.
By firing the TFE layer, the intended belt can be obtained.
【0021】[0021]
【実施例】以下、実施例により本発明を更に詳細に説明
する。EXAMPLES The present invention will be described in more detail below with reference to examples.
【0022】実施例 厚さ0.1mmのガラスクロスを未焼成PTFE粉末の
水性ディスパージョン(PTFE濃度50重量%)中に
浸漬して引上げ、360℃の温度で2分間加熱する。こ
の浸漬と加熱を更に3回繰り返し行い、ガラスクロスの
構成材料である繊維にPTFEを含浸させると共に該ク
ロスの両面に焼成されたPTFE層を形成する。Example A glass cloth having a thickness of 0.1 mm is immersed in an aqueous dispersion of unsintered PTFE powder (PTFE concentration 50% by weight), pulled up, and heated at a temperature of 360 ° C. for 2 minutes. This immersion and heating are repeated three more times to impregnate the fibers, which are the constituent material of the glass cloth, with PTFE, and to form the fired PTFE layers on both surfaces of the cloth.
【0023】次に、これを上記と同じPTFEの水性デ
ィスパージョン中に浸漬して引上げ、110℃の温度で
1分間加熱し、更に、320℃の温度で100秒間加熱
し、焼成されたPTFE層上に未焼成のPTFE層を形
成する。焼成されたPTFE層上に形成された未焼成層
の厚さはいずれも約10μmであった。Next, this was immersed in the same aqueous dispersion of PTFE as described above, pulled up, heated at a temperature of 110 ° C. for 1 minute, and further heated at a temperature of 320 ° C. for 100 seconds, and baked to form a PTFE layer. An unsintered PTFE layer is formed on top. The unfired layers formed on the fired PTFE layers each had a thickness of about 10 μm.
【0024】上記のようにして焼成PTFE層を介して
未焼成のPTFE層を形成したガラスクロス2枚を重ね
合わせ圧延ロールにて温度150℃、圧力150kg/
cm 2 の条件で加熱加圧することにより接合し、図1に
示すのと同構造のベルト用基材を得た。このベルト用基
材における未焼成PTFE層相互間の接着力は200g
/cmであった。Through the fired PTFE layer as described above
Two glass cloths with unfired PTFE layer are stacked
Temperature of 150 ° C and pressure of 150kg /
cm 2Joined by heating and pressing under the conditions of
A belt base material having the same structure as that shown was obtained. Base for this belt
Adhesion between unsintered PTFE layers of the wood is 200g
Was / cm.
【0025】このベルト用基材を図2に示すのと同様
に、その両端部において未焼成PTFE層相互の界面で
引き剥がして剥離する。そして、一方の布材の片端と、
他方の布材の他端を切断し、図3と同形状とする。As in the case shown in FIG. 2, the base material for a belt is peeled off at the interfaces between the unsintered PTFE layers at both ends thereof. And one end of one cloth material,
The other end of the other cloth material is cut to have the same shape as in FIG.
【0026】次に、基材の両端を図4に示すのと同様に
して突き合わせ、この突き合わせ部をプレス板により温
度150℃、圧力80kg/cm2 の条件で30秒間加
熱加圧して接合する。その後、380℃の温度で2分間
加熱することにより未焼成PTFE層を焼成して無段差
のエンドレスベルトを得た。Then, both ends of the base material are abutted in the same manner as shown in FIG. 4, and the abutted portions are heated and pressed for 30 seconds under the conditions of a temperature of 150 ° C. and a pressure of 80 kg / cm 2 to join them. Then, the unsintered PTFE layer was sintered by heating at a temperature of 380 ° C. for 2 minutes to obtain a stepless endless belt.
【0027】[0027]
【発明の効果】本発明によれば無段差のエンドレスベル
トを容易に製造でき、しかも、加圧は突き合わせ部に対
して行うだけでよいので作業能率がよい。According to the present invention, a stepless endless belt can be easily manufactured, and since the pressurization only has to be applied to the abutting portion, the work efficiency is good.
【図1】 本発明に係るエンドレスベルト用基材の実例
を示す正面図である。FIG. 1 is a front view showing an example of a base material for an endless belt according to the present invention.
【図2】 本発明に係る方法によりエンドレスベルトを
製造する際の一工程を示し、基材をその両端部において
剥離した状態の示す正面図である。FIG. 2 is a front view showing one step in manufacturing an endless belt by the method according to the present invention, showing a state where the base material is peeled off at both ends thereof.
【図3】 本発明に係る方法によりエンドレスベルトを
製造する際の一工程を示し、基材をその両端部において
剥離した後、一方の布材の片端および他方の布材の他端
を切断除去した状態を示す正面図である。FIG. 3 shows one step in manufacturing an endless belt by the method according to the present invention, in which one end of one cloth material and the other end of the other cloth material are cut and removed after peeling the base material at both ends thereof. It is a front view which shows the state.
【図4】 本発明に係る方法によりエンドレスベルトを
製造する際の一工程を示し、基材の両端を突き合わせた
状態を示す示す正面図である。FIG. 4 is a front view showing one step of manufacturing an endless belt by the method according to the present invention, showing a state where both ends of the base material are butted.
【図5】 従来のエンドレスベルトの製造法を示し、基
材相互をFEPシートにより融着一体化した状態を示す
正面図である。FIG. 5 is a front view showing a conventional method for manufacturing an endless belt, showing a state in which the base materials are fused and integrated by an FEP sheet.
【図6】 従来のエンドレスベルトの製造法を示し、基
材の両端を突き合わせた状態を示す正面図である。FIG. 6 is a front view showing a conventional method for manufacturing an endless belt, showing a state in which both ends of a base material are butted against each other.
1 基材 2 基材 3A 焼成されたPTFE層 3B 焼成されたPTFE層 4A 焼成されたPTFE層 4B 焼成されたPTFE層 5A 未焼成のPTFE層 5B 未焼成のPTFE層 6A 未焼成のPTFE層 6B 未焼成のPTFE層 DESCRIPTION OF SYMBOLS 1 base material 2 base material 3A baked PTFE layer 3B baked PTFE layer 4A baked PTFE layer 4B baked PTFE layer 5A unbaked PTFE layer 5B unbaked PTFE layer 6A unbaked PTFE layer 6B unbaked Fired PTFE layer
フロントページの続き (72)発明者 榎本 謙吾 大阪府茨木市下穂積1丁目1番2号 日東 電工株式会社内 (72)発明者 佐藤 憲司 大阪府茨木市下穂積1丁目1番2号 日東 電工株式会社内Front page continuation (72) Inventor Kengo Enomoto 1-2-2 Shimohozumi, Ibaraki City, Osaka Prefecture Nitto Denko Corporation (72) Kenji Sato 1-21-2 Shimohozumi, Ibaraki City, Osaka Nitto Denko Stock In the company
Claims (3)
ルオロエチレン層が形成された布材相互を、その未焼成
ポリテトラフルオロエチレン層が向き合うように接合し
たものであり、しかも、両端部において未焼成ポリテト
ラフルオロエチレン層相互の界面で剥離可能なエンドレ
スベルト用基材。1. A cloth material having a non-sintered polytetrafluoroethylene layer formed on at least one surface thereof, which are joined together such that the non-sintered polytetrafluoroethylene layers face each other, and further, both ends are unsintered. Base material for endless belts that can be peeled off at the interface between polytetrafluoroethylene layers.
層を介して未焼成のポリテトラフルオロエチレン層が形
成された布材を接合した請求項1記載のエンドレスベル
ト用基材。2. The base material for an endless belt according to claim 1, wherein a cloth material on which an unfired polytetrafluoroethylene layer is formed is joined via a fired polytetrafluoroethylene layer.
ルオロエチレン層が形成された布材相互を、その未焼成
ポリテトラフルオロエチレン層が向き合うように接合し
たものであり、しかも、両端部において未焼成ポリテト
ラフルオロエチレン層の界面で剥離可能なベルト用基材
を用意し、この基材の両端部を未焼成ポリテトラフルオ
ロエチレン層相互の界面で剥離し、一方の布材の片端と
他方の布材の他端を切断除去し、次いで基材の両端を突
き合わせ、この突き合わせ部を加圧することにより接合
してエンドレスベルトを形成し、その後ポリテトラフル
オロエチレンの融点以上に加熱することにより前記未焼
成のポリテトラフルオロエチレン層を焼成することを特
徴とするエンドレスベルトの製造法。3. A cloth material having a non-sintered polytetrafluoroethylene layer formed on at least one surface thereof is joined so that the non-sintered polytetrafluoroethylene layers face each other, and both ends are unsintered. Prepare a belt base material that can be peeled at the interface of the polytetrafluoroethylene layer, peel off both ends of this base material at the interface between the unbaked polytetrafluoroethylene layers, and use one end of one cloth and the other The other end of the material is cut and removed, then both ends of the base material are abutted, and the abutting portions are pressed together to form an endless belt, which is then heated to a temperature above the melting point of polytetrafluoroethylene to obtain the unbaked material. A method for producing an endless belt, which comprises firing the polytetrafluoroethylene layer as described in 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6102505A JPH07308973A (en) | 1994-05-17 | 1994-05-17 | Base material for endless belt and manufacture of the belt using the same material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6102505A JPH07308973A (en) | 1994-05-17 | 1994-05-17 | Base material for endless belt and manufacture of the belt using the same material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07308973A true JPH07308973A (en) | 1995-11-28 |
Family
ID=14329266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6102505A Pending JPH07308973A (en) | 1994-05-17 | 1994-05-17 | Base material for endless belt and manufacture of the belt using the same material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07308973A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011031572A (en) * | 2009-08-05 | 2011-02-17 | Honda Sangyo Kk | Multiple layer sheet, endless belt, and method of manufacturing the same |
JP2011068133A (en) * | 2010-11-02 | 2011-04-07 | Honda Sangyo Kk | Double-layer sheet, endless belt and method for producing the belt |
JP2014004743A (en) * | 2012-06-25 | 2014-01-16 | Atsugi Hu-Tech Co Ltd | Method for manufacturing polytetrafluoroethylene-based composite fused structure and polytetrafluoroethylene-based composite fused structure |
JP6612001B1 (en) * | 2018-06-21 | 2019-11-27 | Blanc Bijou株式会社 | Fluorine resin fired body production method, fluororesin fired body, fluororesin dispersion production method, fired body production method, fluororesin dispersion, and fired body |
WO2019244433A1 (en) * | 2018-06-21 | 2019-12-26 | Blanc Bijou株式会社 | Method for manufacturing fired body of fluororesin, fired body of fluororesin, method for manufacturing fluororesin dispersion, method for manufacturing fired body, fluororesin dispersion, and fired body |
-
1994
- 1994-05-17 JP JP6102505A patent/JPH07308973A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011031572A (en) * | 2009-08-05 | 2011-02-17 | Honda Sangyo Kk | Multiple layer sheet, endless belt, and method of manufacturing the same |
JP2011068133A (en) * | 2010-11-02 | 2011-04-07 | Honda Sangyo Kk | Double-layer sheet, endless belt and method for producing the belt |
JP2014004743A (en) * | 2012-06-25 | 2014-01-16 | Atsugi Hu-Tech Co Ltd | Method for manufacturing polytetrafluoroethylene-based composite fused structure and polytetrafluoroethylene-based composite fused structure |
JP6612001B1 (en) * | 2018-06-21 | 2019-11-27 | Blanc Bijou株式会社 | Fluorine resin fired body production method, fluororesin fired body, fluororesin dispersion production method, fired body production method, fluororesin dispersion, and fired body |
WO2019244433A1 (en) * | 2018-06-21 | 2019-12-26 | Blanc Bijou株式会社 | Method for manufacturing fired body of fluororesin, fired body of fluororesin, method for manufacturing fluororesin dispersion, method for manufacturing fired body, fluororesin dispersion, and fired body |
CN112543700A (en) * | 2018-06-21 | 2021-03-23 | 永恒的白株式会社 | Method for producing fired fluororesin body, method for producing fluororesin dispersion, method for producing fired body, fluororesin dispersion, and fired body |
CN112543700B (en) * | 2018-06-21 | 2023-06-06 | 永恒的白株式会社 | Fluororesin fired body and method for producing the same, fluororesin dispersion and method for producing the same |
US11820054B2 (en) | 2018-06-21 | 2023-11-21 | Blanc Bijou Co., Ltd. | Method for manufacturing fired body of fluororesin, fired body of fluororesin, method for manufacturing fluororesin dispersion, method for manufacturing fired body, fluororesin dispersion, and fired body |
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