JP2016078363A - 伸縮シート,その製造方法,及びその製造装置 - Google Patents
伸縮シート,その製造方法,及びその製造装置 Download PDFInfo
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Abstract
【解決手段】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)に並べて配置された伸縮シートを製造するための製造方法である。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の中に弾性伸縮部材30を配置する位置決め工程と,こ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接合工程を含む。
【選択図】図4
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 (5)
- 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)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)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)を挟み込んで,両シート部材を互いに融着させる
製造装置。 - さらに,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る
請求項3に記載の製造装置。 - 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)であって,
前記第1シート部材(10)は,前記伸縮方向に沿って延びる複数の凹曲部(11)を有し,
前記弾性伸縮部材(30)のそれぞれは,前記第1シート部材(10)の前記凹曲部(11)の中に配置されており,
前記第1シート部材(10)と前記第2シート部材(20)は,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されている
伸縮シート。
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