JP6281465B2 - 伸縮シートの製造方法及び製造装置 - Google Patents
伸縮シートの製造方法及び製造装置 Download PDFInfo
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Description
本発明の製造方法は,位置決め工程と接合工程を含む。
位置決め工程は,第1シート部材10をその厚み方向に向かって凹状に湾曲させた複数の凹曲部11の中に,それぞれ,1又は複数本ずつ弾性伸縮部材30を配置する工程である。位置決め工程では,第1シート部材10に凹曲部11を形成すると同時に,その中に弾性伸縮部材30を配置することとしてもよいし,第1シート部材10に凹曲部11を形成した後に,その中に弾性伸縮部材30を配置することとしてもよい。例えば,第1シート部材10の凹曲部11の中に弾性伸縮部材30を配置するにあたり,押圧装置を利用して第1シート部材10と弾性伸縮部材30を押圧することとしてもよいし,弾性伸縮部材30自体によって第1シート部材10を押圧するようにしてもよい。
接合工程は,上記の位置決め工程後に,第1シート部材10と第2シート部材20を,弾性伸縮部材30が配置されていない部位において,伸縮方向及び直交方向に間欠的に接合する工程である。
本発明の製造装置は,スリットロール210と,このスリットロール210の周面に対向して配置された融着装置220を含む。
スリットロール210は,第1シート部材10が当接する周面に,その回転方向に沿って形成された複数の凹部211を有する。この凹部211は,弾性伸縮部材30と共に,少なくとも第1シート部材10のうちの弾性伸縮部材30が重なる部位が嵌り込むものとなっている。
また,スリットロール210又は融着装置220は,このスリットロール210に凹部211が形成されていない領域において,スリットロール210の回転方向及び中心軸方向に間欠的に形成された複数の突起部212を有する。突起部212は,融着装置220に形成されていてもよいが,スリットロール210の周面に形成されていることが好ましい。
そして,融着装置220とスリットロール210は,突起部212において,第1シート部材10と第2シート部材20を挟み込んで,両シート部材を互いに融着させる。
プレスロール230は,その周面に,回転方向に沿って形成された複数の凸部231を有している。この凸部231は,弾性伸縮部材30ととともに,少なくとも第1シート部材10のうちの弾性伸縮部材30が重なる部位を押圧して,スリットロール210の凹部211の内部に押し込むものである。なお,プレスロール230の凸部231は,弾性伸縮部材30の重なる位置において,第1シート部材10と第2シート部材20の両方を,スリットロール210の凹部211の中に押し込むものであってもよい。
本発明の伸縮シートは,第1シート部材10と第2シート部材20の間に,複数の弾性伸縮部材30が,その伸縮方向に直交する方向(直交方向)に並べて配置されている。
前記第1シート部材10は,伸縮方向に沿って延びる複数の凹曲部11を有する。
また,複数の弾性伸縮部材30のそれぞれは,第1シート部材10の凹曲部11の中に,一又は複数本ずつ配置されている。
そして,第1シート部材10と第2シート部材20は,弾性伸縮部材30が配置されていない部位において,伸縮方向及び直交方向に間欠的に接合されている。
21…凹曲部 30…弾性伸縮部材 40…接合部
40a…接合部列 50…固定部 100…伸縮シート
200…製造装置 210…スリットロール 211…凹部
212…突起部 212a…突起部列 220…融着装置
230…プレスロール 231…凸部 240…塗布装置
Claims (3)
- 第1シート部材(10)と第2シート部材(20)の間に,複数の弾性伸縮部材(30)が,その伸縮方向に直交する直交方向に並べて配置された伸縮シート(100)を製造するための製造方法であって,
前記第1シート部材(10)が当接する周面に,その回転方向に沿って形成された複数の凹部(211)を有するスリットロール(210)を用いて行う位置決め工程であって,前記弾性伸縮部材(30)とともに,少なくとも前記第1シート部材(10)のうちの前記弾性伸縮部材(30)が重なる部位を押圧して,前記スリットロール(210)の前記凹部(211)の内部に押し込むことにより,前記第1シート部材(10)をその厚み方向に向かって凹状に湾曲させた複数の凹曲部(11)の中に,それぞれ,前記弾性伸縮部材(30)を配置する位置決め工程と,
前記位置決め工程後に,前記第1シート部材(10)と前記第2シート部材(20)を,前記弾性伸縮部材(30)が配置されていない部位において,前記伸縮方向及び前記直交方向に間欠的に接合する接合工程と,を含む
伸縮シートの製造方法。 - 前記位置決め工程は,
前記第1シート部材(10)と前記第2シート部材(20)の間に前記弾性伸縮部材(30)を配置した後に,前記弾性伸縮部材(30)が存在する部位を,前記第2シート部材(20)側から前記第1シート部材(10)側に向かって押圧するか,
前記第1シート部材(10)の上に前記弾性伸縮部材(30)を重ねた後に,前記弾性伸縮部材(30)が存在する部位を,前記弾性伸縮部材(30)側から前記第1シート部材(10)側に向かって押圧する工程である
請求項1に記載の製造方法。 - 第1シート部材(10)と第2シート部材(20)の間に,複数の弾性伸縮部材(30)が,その伸縮方向に直交する直交方向に並べて配置された伸縮シート(100)を製造するための製造装置であって,
スリットロール(210)と,
前記スリットロール(210)の周面に対向して配置された融着装置(220)と,
前記スリットロール(210)の周面に対向して配置されたプレスロール(230)を備え,
前記スリットロール(210)は,前記第1シート部材(10)が当接する周面に,その回転方向に沿って形成された複数の凹部(211)を有し,
前記スリットロール(210)又は前記融着装置(220)は,前記スリットロール(210)に前記凹部(211)が形成されていない領域において,前記スリットロール(210)の回転方向及び中心軸方向に間欠的に形成された複数の突起部(212)を有し,
前記凹部(211)は,前記弾性伸縮部材(30)と共に,少なくとも前記第1シート部材(10)のうちの前記弾性伸縮部材(30)の重なる部位が嵌り込むものであり,
前記プレスロール(230)は,
その周面に,回転方向に沿って形成された複数の凸部(231)を有し,
前記凸部(231)は,前記弾性伸縮部材(30)ととともに,少なくとも前記第1シート部材(10)のうちの前記弾性伸縮部材(30)が重なる部位を押圧して,前記スリットロール(210)の前記凹部(211)の内部に押し込むものであり,
前記融着装置(220)と前記スリットロール(210)は,前記突起部(212)において,前記第1シート部材(10)と前記第2シート部材(20)を挟み込むと共に両シート部材を互いに融着させる
製造装置。
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