JPH0465770B2 - - Google Patents
Info
- Publication number
- JPH0465770B2 JPH0465770B2 JP61093948A JP9394886A JPH0465770B2 JP H0465770 B2 JPH0465770 B2 JP H0465770B2 JP 61093948 A JP61093948 A JP 61093948A JP 9394886 A JP9394886 A JP 9394886A JP H0465770 B2 JPH0465770 B2 JP H0465770B2
- Authority
- JP
- Japan
- Prior art keywords
- sheets
- muddy water
- joined
- thermoplastic resin
- joining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 229920005992 thermoplastic resin Polymers 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000012943 hotmelt Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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
- B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/737—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
- B29C66/7373—Joining soiled or oxidised materials
-
- 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
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- 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
-
- 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
- B29C66/71—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)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
土木工事施工現場に於いて、漏水防止に使用す
る熱可塑性樹脂シート類の現場接合法に関し、特
に泥水もしくはその他の異物の汚染を受け易い現
場接合施工に好適な接合法に関する。[Detailed Description of the Invention] [Industrial Application Field] Regarding the on-site joining method of thermoplastic resin sheets used for water leakage prevention at civil engineering construction sites, particularly at sites susceptible to contamination by muddy water or other foreign substances. This invention relates to a joining method suitable for joining construction.
土木工事特に下水工事などが大型化するに伴い
径の大きな陶管とかヒユウム管が使用されるよう
になつてきている。特に、管内への地下水の浸透
を防止することが要求されるようになり、施工現
場で熱可塑性樹脂シートを、例えば堀削した開溝
又は暗渠内で、前記管類の配管に従つてその表面
を被覆する必要が多くなつている。土木工事であ
るため施工現場において前記管類、シート類は泥
や泥水に接触し汚染され易い悪条件下にあり、管
類にシートを巻いたのちに、シートの接合する場
合、汚染されたシートそのまま接合するのは容易
ではない。
As civil engineering work, especially sewage work, becomes larger in size, ceramic pipes and pipes with larger diameters are being used. In particular, it has become necessary to prevent groundwater from seeping into pipes, and thermoplastic resin sheets are placed on the surface of the pipes at construction sites, for example, in excavated open trenches or culverts. There is an increasing need to cover Because this is civil engineering work, the pipes and sheets at the construction site are under adverse conditions where they come into contact with mud and muddy water and are likely to become contaminated. It is not easy to join them as is.
従来は、熱可塑性樹脂シートの接合は、シート
の表面から可及的に汚染する泥状物を除去して、
接着剤、例えば、ゴム系接着剤あるいは両面テー
プを用いる接着や熱溶着によつて行われている。 Conventionally, thermoplastic resin sheets are bonded by removing as much contaminating mud from the surface of the sheets as possible.
This is accomplished by adhesion using an adhesive, such as a rubber adhesive or double-sided tape, or by heat welding.
従来の接着剤を用いる方法や熱溶着法にしても
これら方法は何れにしても膜の表面が十分に清浄
されていることが必要である。しかし、土木工事
現場では、膜の表面を清浄に保つことは極めて困
難であり、或程度シートの表面が汚染下でも接合
ができる接合法が要求される。施工現場でシート
の表面の汚染は現場事情の外、天候などにも左右
され、これら接合法ではシートの接合には種々の
困難性があるので、左右されない他の接合法が期
待されている。
Regardless of the method using a conventional adhesive or the thermal welding method, it is necessary that the surface of the film be sufficiently cleaned. However, at civil engineering construction sites, it is extremely difficult to keep the surface of the membrane clean, and a joining method is required that allows joining even if the surface of the sheet is contaminated to some extent. The contamination of the sheet surface at the construction site is affected not only by site conditions but also by the weather, and these joining methods have various difficulties in joining sheets, so other joining methods that are not affected by this are expected.
本発明者は、上記問題を解決するため鋭意研究
し、泥又は泥水によるシート表面が汚染された悪
条件下に於いても充分に接合できる技術を開発す
ることに成功し、遂に本発明を完成した。
The inventor of the present invention conducted extensive research to solve the above problems, and succeeded in developing a technology that allows sufficient bonding even under adverse conditions where the sheet surface is contaminated with mud or muddy water, and finally completed the present invention. did.
即ち、本発明は熱可塑性樹脂シートを泥水汚染
を受ける施工現場で前記シートを接合するに当た
り、前記両シート接合部を超音波溶着で接合する
ことを特徴とする土木用熱可塑性樹脂シートの接
合法である。 That is, the present invention provides a method for joining thermoplastic resin sheets for civil engineering, characterized in that when joining the thermoplastic resin sheets at a construction site where the sheets are contaminated with muddy water, the joined portions of both sheets are joined by ultrasonic welding. It is.
本発明に於いて使用できる熱可塑性樹脂シート
としては、一般に土木工事、特に埋設管の被覆な
どに用いられるものならば何れでもよい。 The thermoplastic resin sheet that can be used in the present invention may be any sheet that is generally used in civil engineering work, particularly for covering buried pipes.
本発明においては上記熱可塑性樹脂シートの接
合に超音波を用いる。すなわち、溶着し接合しよ
うとする熱可塑性樹脂シートを重合せ、厚さ、超
音波吸収率などを考慮して調整された間隙をゆう
するホーンと受け台の間に熱可塑性樹脂シートを
挟み、次いでホーンと受け台の間で継続又は連続
発振させる。この振動によつて、砂や埃、泥水、
油等がシート表面から弾き飛ばされながらシート
同志が超音波エネルギーを吸収して、発熱し溶着
接合される。 In the present invention, ultrasonic waves are used to join the thermoplastic resin sheets. That is, the thermoplastic resin sheets to be welded and joined are superimposed, the thermoplastic resin sheet is sandwiched between the horn and the pedestal with a gap adjusted in consideration of thickness, ultrasonic absorption rate, etc., and then Continuous or continuous oscillation between the horn and the cradle. This vibration causes sand, dust, muddy water,
While oil and the like are blown away from the sheet surfaces, the sheets absorb ultrasonic energy, generate heat, and are welded together.
現場環境によつては、汚染の程度が高い場合が
ある。かかる場合にもできるだけ小さい超音波エ
ネルギーで接合することが望ましく、そのために
は両シートの間にホツトメルト材を介在させるこ
とによつて本発明の適用できる環境範囲を広くす
ることができる。 Depending on the site environment, the degree of contamination may be high. Even in such cases, it is desirable to bond with as little ultrasonic energy as possible, and for this purpose, by interposing a hot melt material between both sheets, the range of environments to which the present invention can be applied can be widened.
ホツトメルト材としては、シートよりも融点
の低いエチレン酢ビ系、ポリアミド系、ポリエス
テル系、ポリオレフイン系の低融点のフイルム又
はシート、不織布などが一般的であるが、本発明
ではこの他にシートよりも高い融点を有してい
ても、ポリエステル系やポリアミド系、ポリオレ
フイン系、エチレン酢ビ系の不織布や織布を用い
ることが可能であり、その場合はシート界面に介
在させシートの溶融部に構造的に一部埋め込み接
合する。ホツトメルト材を両シートの間に介在さ
せておくことにより、ホツトメルト材は厚さを有
し、ゴム的性質を有するため、シート材はホーン
下で浮き上がつた場合にも空間を埋めて接着効果
があり、極めて好ましい結果が得られる。 As hot melt materials, ethylene-vinyl acetate-based, polyamide-based, polyester-based, polyolefin-based films or sheets, nonwoven fabrics, etc., which have a melting point lower than that of sheets, are generally used. Even if they have a high melting point, it is possible to use polyester-based, polyamide-based, polyolefin-based, or ethylene-vinyl acetate-based nonwoven fabrics or woven fabrics. Partially embedded and joined. By interposing the hot melt material between both sheets, the hot melt material is thick and has rubber-like properties, so even if the sheet material lifts up under the horn, it fills the space and has an adhesive effect. and very favorable results can be obtained.
又、下水道管路布設時又は雨天時に於いては、
泥水が超音波ホーン受け台上にたまるようなこと
がある。かかる多量の泥水を全量超音波振動によ
つて排除することは消費するエネルギー効率が悪
い。そのような場合には、ホーンの前後を高圧の
気体、例えば空気、窒素、水蒸気等を吹き付け、
泥水を吹き飛ばしつつ超音波溶着を行うことが好
ましい。 In addition, when installing sewer pipes or in rainy weather,
Muddy water may accumulate on the ultrasonic horn cradle. Removing such a large amount of muddy water by ultrasonic vibration is inefficient in terms of energy consumption. In such cases, blow a high-pressure gas such as air, nitrogen, or water vapor on the front and back of the horn.
It is preferable to perform ultrasonic welding while blowing away muddy water.
以下実施例により本発明を具体的に説明する。 The present invention will be specifically explained below using Examples.
実施例 １
厚さ400μの２枚のポリプロピレン樹脂シート
の端部幅20mm重ね、超音波ホーンの下部のシート
接合部に泥水を５〜６滴落し、その上から13mmφ
の先端円筒状の超音波ホーンで押え、周波数25K
Hz、出力150Wで2sec間発振し、シートを接合し
た。接合部の引張り強度は11Kg／cm幅以上であ
り、原反の引張り強度（11Kg／cm幅）と変わらな
かつた。Example 1 Two polypropylene resin sheets with a thickness of 400 μm overlapped with an end width of 20 mm, 5 to 6 drops of muddy water were dropped on the joint of the sheets at the bottom of the ultrasonic horn, and a 13 mmφ
Press with a cylindrical ultrasonic horn at the tip, frequency 25K
The sheets were joined by oscillating for 2 seconds at Hz and output of 150W. The tensile strength of the joint was more than 11 kg/cm width, which was the same as the tensile strength of the original fabric (11 kg/cm width).
実施例 ２
実施例１と同じ２枚のポリプロピレン樹脂シー
トの重ね合わせの部分に0.5mmの厚さのエチレン
酢ビ系ホツトメルト材を介在せしめ、泥水の量を
３倍に増して実施例１と同様に接合した結果、略
同等の接合強度が得られた。Example 2 Same as Example 1 except that ethylene vinyl acetate hot melt material with a thickness of 0.5 mm was interposed between the overlapping parts of the same two polypropylene resin sheets as in Example 1, and the amount of muddy water was tripled. As a result, approximately the same bonding strength was obtained.
実施例 ３
実施例１と同一シートを同一の条件で重ね合わ
せて、深さ１cmの泥水に侵漬し、これに５Kg／cm2
の空気を吹きつけ、泥水を吹き飛ばしつつ、超音
波ホーンで押さえつけ、周波数25KHz、出力
150Wで2sec間発振して接合した。Example 3 The same sheets as in Example 1 were stacked together under the same conditions, immersed in muddy water to a depth of 1 cm, and 5 kg/cm 2
Blow out the air, blow away the muddy water, and press it with an ultrasonic horn, frequency 25KHz, output
Bonding was performed by oscillating at 150W for 2 seconds.
接合部はシートの引張り強度と同等以上であつ
た。 The tensile strength of the joint was equal to or higher than that of the sheet.
本発明により熱可塑性樹脂シートが、従来の接
着剤又は熱溶着では接合が困難な泥水などで汚染
された条件下でも、実用に耐える強度で接合しう
るので、その産業上の利用価値は大きい。
According to the present invention, thermoplastic resin sheets can be joined with a strength that is suitable for practical use even under conditions contaminated with muddy water or the like, which would be difficult to join using conventional adhesives or thermal welding, so that the thermoplastic resin sheets have great industrial utility value.
Claims (1)
現場で前記シートを接合するに当たり、前記両シ
ート接合部を超音波溶着で接合することを特徴と
する土木用熱可塑性樹脂シートの接合法。 ２ 接合するシートの間にホツトメルト材を介在
させたる特許請求の範囲第１項記載の接合法。 ３ シート接合部の泥水を圧気で吹飛ばしつつ接
合する特許請求の範囲第１項又は第２項記載の接
合法。[Scope of Claims] 1. A thermoplastic resin sheet for civil engineering, characterized in that when joining the thermoplastic resin sheets at a construction site where the sheets are contaminated with muddy water, the joined portions of both sheets are joined by ultrasonic welding. Joining method. 2. The joining method according to claim 1, wherein a hot melt material is interposed between the sheets to be joined. 3. The joining method according to claim 1 or 2, in which the sheets are joined while blowing away muddy water at the joint portion with pressurized air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61093948A JPS62249726A (en) | 1986-04-23 | 1986-04-23 | Method of jointing thermoplastic resin sheet for civil engineering works |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61093948A JPS62249726A (en) | 1986-04-23 | 1986-04-23 | Method of jointing thermoplastic resin sheet for civil engineering works |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62249726A JPS62249726A (en) | 1987-10-30 |
| JPH0465770B2 true JPH0465770B2 (en) | 1992-10-21 |
Family
ID=14096657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61093948A Granted JPS62249726A (en) | 1986-04-23 | 1986-04-23 | Method of jointing thermoplastic resin sheet for civil engineering works |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62249726A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01254864A (en) * | 1988-04-05 | 1989-10-11 | Fuji Photo Film Co Ltd | Dry type chemical analysis slide and production thereof |
| JPH06293076A (en) * | 1993-04-08 | 1994-10-21 | Nitto Denzai Kk | Bonding method |
-
1986
- 1986-04-23 JP JP61093948A patent/JPS62249726A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62249726A (en) | 1987-10-30 |
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