METHOD FOR MANUFACTURING POLYOLEFIN RESIN COATED STEEL PIPE HAVING TWO-LAYER ADHESIVE
To solve the problems in which, in a conventional three-layer polyolefin resin coated steel pipe, when a powder adhesive is coated thick in order to secure a high adhesiveness, i.e. a high peel strength, remaining of air bubbles in an adhesive layer and insufficiency of melting occur, leading to the...
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| creator | UGUCHI KOHEI YOSHIZAKI NOBUKI |
| description | To solve the problems in which, in a conventional three-layer polyolefin resin coated steel pipe, when a powder adhesive is coated thick in order to secure a high adhesiveness, i.e. a high peel strength, remaining of air bubbles in an adhesive layer and insufficiency of melting occur, leading to the occurence of adhesion failure to the polyolefin resin; on the other hand, in a method using a molten film-like adhesive, the adhesiveness between a powder epoxy resin layer and an adhesive layer is insufficient.SOLUTION: A manufacturing of a polyolefin resin coated steel pile having a two-layer adhesive according to the present invention applies a powder adhesive to form a lower-layer adhesive layer 3 in a thin film, and then laminates a molten film adhesive formed by adhesive pellets extruded using an extruder via a T-die or a round die to form an upper layer adhesive layer 4. This strengthens a bonding force between respective interfacial surfaces, further to form a thick-film adhesive layer with less defects such as air bubbles. Laminating a molten polyolefin resin layer 5 on this adhesive layer can express a high peel strength.SELECTED DRAWING: Figure 1
【課題】従来の３層ポリオレフィン樹脂被覆鋼管では高い接着性、すなわち高ピール強度を確保するために、粉体接着剤を厚膜塗装すると、接着剤層内への気泡残存や、溶融不足が発生してポリオレフィン樹脂との接着不良が発生した。一方で、溶融フィルム状の接着剤を使用する方法では、粉体エポキシ樹脂層と接着剤層の接着性が不足する問題があった。【解決手段】本発明の２層接着剤を有するポリオレフィン樹脂被覆鋼管の製造は、粉体接着剤を塗布して薄膜の下層接着剤層３を形成し、続けて接着剤ペレットを押出機でＴダイス又は丸ダイスを介して溶融フィルム接着剤を積層して上層接着剤層４を形成する。これによって、各界面の結合力が強化され、更には気泡等の欠陥の少ない厚膜接着剤層が形成される。この接着剤層の上に溶融したポリオレフィン樹脂層５を積層することで、高いピール強度を発現することが出来る。【選択図】図１ |
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【課題】従来の３層ポリオレフィン樹脂被覆鋼管では高い接着性、すなわち高ピール強度を確保するために、粉体接着剤を厚膜塗装すると、接着剤層内への気泡残存や、溶融不足が発生してポリオレフィン樹脂との接着不良が発生した。一方で、溶融フィルム状の接着剤を使用する方法では、粉体エポキシ樹脂層と接着剤層の接着性が不足する問題があった。【解決手段】本発明の２層接着剤を有するポリオレフィン樹脂被覆鋼管の製造は、粉体接着剤を塗布して薄膜の下層接着剤層３を形成し、続けて接着剤ペレットを押出機でＴダイス又は丸ダイスを介して溶融フィルム接着剤を積層して上層接着剤層４を形成する。これによって、各界面の結合力が強化され、更には気泡等の欠陥の少ない厚膜接着剤層が形成される。この接着剤層の上に溶融したポリオレフィン樹脂層５を積層することで、高いピール強度を発現することが出来る。【選択図】図１</description><language>eng ; jpn</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; BLASTING ; ENGINEERING ELEMENTS AND UNITS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; JOINTS OR FITTINGS FOR PIPES ; LAYERED PRODUCTS ; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ; LIGHTING ; MEANS FOR THERMAL INSULATION IN GENERAL ; MECHANICAL ENGINEERING ; PERFORMING OPERATIONS ; PIPES ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING ; THERMAL INSULATION IN GENERAL ; TRANSPORTING ; WEAPONS ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>2020</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20201203&DB=EPODOC&CC=JP&NR=2020192774A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20201203&DB=EPODOC&CC=JP&NR=2020192774A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>UGUCHI KOHEI</creatorcontrib><creatorcontrib>YOSHIZAKI NOBUKI</creatorcontrib><title>METHOD FOR MANUFACTURING POLYOLEFIN RESIN COATED STEEL PIPE HAVING TWO-LAYER ADHESIVE</title><description>To solve the problems in which, in a conventional three-layer polyolefin resin coated steel pipe, when a powder adhesive is coated thick in order to secure a high adhesiveness, i.e. a high peel strength, remaining of air bubbles in an adhesive layer and insufficiency of melting occur, leading to the occurence of adhesion failure to the polyolefin resin; on the other hand, in a method using a molten film-like adhesive, the adhesiveness between a powder epoxy resin layer and an adhesive layer is insufficient.SOLUTION: A manufacturing of a polyolefin resin coated steel pile having a two-layer adhesive according to the present invention applies a powder adhesive to form a lower-layer adhesive layer 3 in a thin film, and then laminates a molten film adhesive formed by adhesive pellets extruded using an extruder via a T-die or a round die to form an upper layer adhesive layer 4. This strengthens a bonding force between respective interfacial surfaces, further to form a thick-film adhesive layer with less defects such as air bubbles. Laminating a molten polyolefin resin layer 5 on this adhesive layer can express a high peel strength.SELECTED DRAWING: Figure 1
【課題】従来の３層ポリオレフィン樹脂被覆鋼管では高い接着性、すなわち高ピール強度を確保するために、粉体接着剤を厚膜塗装すると、接着剤層内への気泡残存や、溶融不足が発生してポリオレフィン樹脂との接着不良が発生した。一方で、溶融フィルム状の接着剤を使用する方法では、粉体エポキシ樹脂層と接着剤層の接着性が不足する問題があった。【解決手段】本発明の２層接着剤を有するポリオレフィン樹脂被覆鋼管の製造は、粉体接着剤を塗布して薄膜の下層接着剤層３を形成し、続けて接着剤ペレットを押出機でＴダイス又は丸ダイスを介して溶融フィルム接着剤を積層して上層接着剤層４を形成する。これによって、各界面の結合力が強化され、更には気泡等の欠陥の少ない厚膜接着剤層が形成される。この接着剤層の上に溶融したポリオレフィン樹脂層５を積層することで、高いピール強度を発現することが出来る。【選択図】図１</description><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</subject><subject>BLASTING</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>JOINTS OR FITTINGS FOR PIPES</subject><subject>LAYERED PRODUCTS</subject><subject>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</subject><subject>LIGHTING</subject><subject>MEANS FOR THERMAL INSULATION IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>PERFORMING OPERATIONS</subject><subject>PIPES</subject><subject>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</subject><subject>SHAPING OR JOINING OF PLASTICS</subject><subject>SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>TRANSPORTING</subject><subject>WEAPONS</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZAj1dQ3x8HdRcPMPUvB19At1c3QOCQ3y9HNXCPD3ifT3cXXz9FMIcg0Gks7-jiGuLgrBIa6uPgoBngGuCh6OYSCVIeH-uj6Oka5BCo4uHkClYa48DKxpiTnFqbxQmptByc01xNlDN7UgPz61uCAxOTUvtSTeK8DIwMjA0NLI3NzE0ZgoRQDQvjD3</recordid><startdate>20201203</startdate><enddate>20201203</enddate><creator>UGUCHI KOHEI</creator><creator>YOSHIZAKI NOBUKI</creator><scope>EVB</scope></search><sort><creationdate>20201203</creationdate><title>METHOD FOR MANUFACTURING POLYOLEFIN RESIN COATED STEEL PIPE HAVING TWO-LAYER ADHESIVE</title><author>UGUCHI KOHEI ; YOSHIZAKI NOBUKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2020192774A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2020</creationdate><topic>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</topic><topic>BLASTING</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>JOINTS OR FITTINGS FOR PIPES</topic><topic>LAYERED PRODUCTS</topic><topic>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</topic><topic>LIGHTING</topic><topic>MEANS FOR THERMAL INSULATION IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>PERFORMING OPERATIONS</topic><topic>PIPES</topic><topic>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</topic><topic>SHAPING OR JOINING OF PLASTICS</topic><topic>SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>TRANSPORTING</topic><topic>WEAPONS</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>UGUCHI KOHEI</creatorcontrib><creatorcontrib>YOSHIZAKI NOBUKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>UGUCHI KOHEI</au><au>YOSHIZAKI NOBUKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR MANUFACTURING POLYOLEFIN RESIN COATED STEEL PIPE HAVING TWO-LAYER ADHESIVE</title><date>2020-12-03</date><risdate>2020</risdate><abstract>To solve the problems in which, in a conventional three-layer polyolefin resin coated steel pipe, when a powder adhesive is coated thick in order to secure a high adhesiveness, i.e. a high peel strength, remaining of air bubbles in an adhesive layer and insufficiency of melting occur, leading to the occurence of adhesion failure to the polyolefin resin; on the other hand, in a method using a molten film-like adhesive, the adhesiveness between a powder epoxy resin layer and an adhesive layer is insufficient.SOLUTION: A manufacturing of a polyolefin resin coated steel pile having a two-layer adhesive according to the present invention applies a powder adhesive to form a lower-layer adhesive layer 3 in a thin film, and then laminates a molten film adhesive formed by adhesive pellets extruded using an extruder via a T-die or a round die to form an upper layer adhesive layer 4. This strengthens a bonding force between respective interfacial surfaces, further to form a thick-film adhesive layer with less defects such as air bubbles. Laminating a molten polyolefin resin layer 5 on this adhesive layer can express a high peel strength.SELECTED DRAWING: Figure 1
【課題】従来の３層ポリオレフィン樹脂被覆鋼管では高い接着性、すなわち高ピール強度を確保するために、粉体接着剤を厚膜塗装すると、接着剤層内への気泡残存や、溶融不足が発生してポリオレフィン樹脂との接着不良が発生した。一方で、溶融フィルム状の接着剤を使用する方法では、粉体エポキシ樹脂層と接着剤層の接着性が不足する問題があった。【解決手段】本発明の２層接着剤を有するポリオレフィン樹脂被覆鋼管の製造は、粉体接着剤を塗布して薄膜の下層接着剤層３を形成し、続けて接着剤ペレットを押出機でＴダイス又は丸ダイスを介して溶融フィルム接着剤を積層して上層接着剤層４を形成する。これによって、各界面の結合力が強化され、更には気泡等の欠陥の少ない厚膜接着剤層が形成される。この接着剤層の上に溶融したポリオレフィン樹脂層５を積層することで、高いピール強度を発現することが出来る。【選択図】図１</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PIPES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | METHOD FOR MANUFACTURING POLYOLEFIN RESIN COATED STEEL PIPE HAVING TWO-LAYER ADHESIVE |
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