JP2005041984A - Method of manufacturing water-crosslinking polyolefin sheet - Google Patents
Method of manufacturing water-crosslinking polyolefin sheet Download PDFInfo
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- JP2005041984A JP2005041984A JP2003277206A JP2003277206A JP2005041984A JP 2005041984 A JP2005041984 A JP 2005041984A JP 2003277206 A JP2003277206 A JP 2003277206A JP 2003277206 A JP2003277206 A JP 2003277206A JP 2005041984 A JP2005041984 A JP 2005041984A
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Abstract
Description
本発明は、水架橋ポリオレフィン製シートの製造法、殊に水架橋ポリオレフィンの架橋方法に関する。 The present invention relates to a method for producing a water-crosslinked polyolefin sheet, and more particularly to a method for crosslinking a water-crosslinked polyolefin.
水架橋ポリオレフィンは、その本来の特性を発現させるために、成形した後に水分と接触させ架橋させる必要がある。その架橋処理は、成形品を８０〜１００℃の水蒸気雰囲気中に放置して成形品を水蒸気に接触させる方法（特許文献１）や成形品を熱水に浸漬して成形品を熱水に接触させる方法（特許文献２）が提案されている。 The water-crosslinked polyolefin needs to be brought into contact with moisture after being molded and crosslinked in order to exhibit its original characteristics. For the crosslinking treatment, the molded product is left in a steam atmosphere at 80 to 100 ° C. to contact the molded product with water vapor (Patent Document 1) or the molded product is immersed in hot water to contact the molded product with hot water. A method (Patent Document 2) is proposed.
上記従来の方法は、水架橋処理のために、成形品を収容可能な容積をもつ蒸気室や熱水槽など特別な設備が必要となり費用もかかる。
本発明が解決しようとする課題は、大掛かりで特別な設備を設置することなく、必要に応じて既存のオーブン等を利用して、簡単に水架橋ポリオレフィン製シートの架橋処理を実施する製造法を提供することである。
The conventional method requires a special facility such as a steam chamber or a hot water tank having a volume capable of accommodating a molded product for the water cross-linking treatment, and is expensive.
The problem to be solved by the present invention is to provide a production method in which a cross-linking treatment of a water-crosslinked polyolefin sheet is easily carried out using an existing oven or the like as required without installing special equipment on a large scale. Is to provide.
上記課題を達成するために、本発明に係る製造法は、水架橋ポリオレフィン製シートと水分を含ませた紙を交互に積層し、この積層体を密封包装した状態で放置し水架橋ポリオレフィンを架橋させることを特徴とする。
また、別の製造法は、水架橋ポリオレフィン製シートと水分を含ませた紙を重ねて捲回し、この捲回体を密封包装した状態で放置し水架橋ポリオレフィンを架橋させることを特徴とする。
上記積層体や捲回体は、水を含ませた紙を積層体や捲回体からはみ出させておくことが好ましい。
In order to achieve the above object, the production method according to the present invention comprises alternately laminating water-crosslinked polyolefin sheets and water-containing paper, and leaving the laminate in a hermetically packaged state to crosslink the water-crosslinked polyolefin. It is characterized by making it.
Another manufacturing method is characterized in that a water-crosslinked polyolefin sheet and moisture-containing paper are stacked and wound, and the wound body is left in a hermetically packaged state to crosslink the water-crosslinked polyolefin.
It is preferable that the laminated body or the wound body is made to protrude paper containing water from the laminated body or the wound body.
上記方法によれば、水分を含ませた紙を効率よく水架橋ポリオレフィン製シートの表面に密着させ、水架橋ポリオレフィンの架橋を進めることができる。上記積層体や捲回体を密封包装しなかったり密封包装が不十分であると、紙に含ませた水分が飛散して架橋に必要な水分を確保できなくなるので注意が必要である。 According to the above method, water-containing paper can be efficiently brought into close contact with the surface of the water-crosslinked polyolefin sheet, and crosslinking of the water-crosslinked polyolefin can proceed. If the laminated body or the wound body is not hermetically packaged or if hermetic packaging is insufficient, the moisture contained in the paper is scattered and the moisture necessary for crosslinking cannot be secured.
水を含ませた紙を積層体や捲回体からはみ出させておくと、当該はみ出させた箇所に保持した水分を積層体や捲回体の内側まで供給して水架橋を良好に進めることができる。 If the paper containing water is protruded from the laminated body or the wound body, the water held in the protruded portion can be supplied to the inside of the laminated body or the wound body so that the water cross-linking can proceed well. it can.
このように、本発明に係る方法によれば、積層体や捲回体を密封包装した状態で放置するという簡単な手段で、水架橋ポリオレフィンの架橋を進めることができる。水架橋の進行を促進する場合にも、密封包装した積層体や捲回体を既存のオーブン等に収容して容易に高温雰囲気を作ることができる。
架橋処理のために特別な設備を設置する必要がなく、架橋処理をした水架橋ポリオレフィンシートを容易に製造することができる。
As described above, according to the method of the present invention, the crosslinking of the water-crosslinked polyolefin can be promoted by a simple means of leaving the laminated body or the wound body in a sealed and packaged state. Even when the progress of water cross-linking is promoted, it is possible to easily create a high-temperature atmosphere by storing the hermetically sealed laminated body or wound body in an existing oven or the like.
There is no need to install special equipment for the crosslinking treatment, and a crosslinked water-crosslinked polyolefin sheet can be easily produced.
本発明を実施するに当たり、水架橋ポリオレフィンは、例えば、エチレンとエチレン性不飽和シラン化合物を共重合してなるシラン共重合ポリオレフィンや、ポリオレフィンを不飽和シラン化合物と遊離ラジカル発生剤の存在下で遊離ラジカル発生剤の分解温度以上に加熱することによって得られるシラングラフトポリオレフィンである。これらを押出成形したシートを所定寸法に裁断し、水分を含ませた紙と交互に積層し積層体とすることができる。また、押出成形したシートに水分を含ませた紙を重ね、ロール巻きすることにより捲回体とすることができる。ここで、水分を含ませる紙は、押出成形したシートの表面保護に使用される糊付マスキング紙をそのまま使用することができる。 In carrying out the present invention, the water-crosslinked polyolefin is, for example, a silane-copolymerized polyolefin obtained by copolymerizing ethylene and an ethylenically unsaturated silane compound, or a polyolefin free in the presence of an unsaturated silane compound and a free radical generator. It is a silane-grafted polyolefin obtained by heating above the decomposition temperature of the radical generator. Sheets obtained by extruding these can be cut into predetermined dimensions, and alternately laminated with moisture-containing paper to form a laminate. Moreover, it can be set as a wound body by putting the paper which included the moisture on the extruded sheet | seat, and roll-rolling. Here, as the paper containing water, a masking paper with glue used for protecting the surface of the extruded sheet can be used as it is.
上記積層体や捲回体を密封包装する包装材料は、ポリエチレンフィルムやポリプロピレンフィルムのほか、これらに、アルミ蒸着を施したフィルムである。密封包装した積層体や捲回体を高温雰囲気に置き水架橋ポリエチレンの架橋を進める場合、その加熱温度は水架橋ポリオレフィンの耐熱温度より高くならないよう設定し、包装材料もその加熱温度に応じて選択する。 The packaging material for hermetically wrapping the laminated body or the wound body is a film obtained by performing aluminum vapor deposition on these in addition to a polyethylene film and a polypropylene film. When proceeding with the cross-linking of water-crosslinked polyethylene by placing the sealed and laminated laminate or wound body in a high-temperature atmosphere, set the heating temperature so that it does not exceed the heat resistance temperature of the water-crosslinked polyolefin, and select the packaging material according to the heating temperature To do.
水架橋は、常温で放置しても進行するが、好ましくは、７０〜１００℃の高温雰囲気中で進める。より速やかに水架橋を完了させることができる。 Water crosslinking proceeds even when left at room temperature, but preferably proceeds in a high temperature atmosphere of 70 to 100 ° C. Water crosslinking can be completed more quickly.
上記積層体や捲回体を密封包装した状態で架橋処理をした後、例えば、密封包装の１箇所又は複数箇所に穴をあけて密封状態を開放すると、紙に含ませた余分な水分を飛散させることが可能である。積層体や捲回体から紙をはみ出させておくと、内側に残存している余分な水分を前記はみ出し箇所から効果的に飛散させることができる。 After cross-linking treatment in a state where the laminated body or the wound body is hermetically packaged, for example, when a hole is opened in one or a plurality of locations of the hermetic package and the hermetically sealed state is opened, excess moisture contained in the paper is scattered. It is possible to make it. If the paper is protruded from the laminated body or the wound body, excess moisture remaining on the inside can be effectively scattered from the protruding portion.
シラン架橋性の水架橋ポリオレフィン樹脂（三菱化学製「リンクロン−Ｘ」）を押出成形し、水分を含ませた紙を前記成形したシートの片面にインラインで貼り付けて一定長に裁断した。そして、そのまま同じ向きに所定枚数を積層し、この積層体を密封包装した。前記紙は、糊付マスキング紙を用い、その幅をシート幅より若干広くしてシートの両側に約１０mmずつはみ出すようにした。また、糊の塗布面側に霧吹きで水分を噴射して含ませ、シート表面に貼り付けた。このように糊付マスキング紙を用いると、押出成形したシートへの貼り付けと密着を容易に実施することができる。
上記密封包装した状態の積層体をオーブン中で、８０℃，１２〜２４時間加熱することにより水架橋処理をした。そして、水架橋処理の後、密封包装に穴をあけ余分の水分を飛散させた。
A silane-crosslinkable water-crosslinked polyolefin resin (Mitsubishi Chemical "Linklon-X") was extrusion molded, and water-impregnated paper was applied inline to one side of the molded sheet and cut into a fixed length. And a predetermined number of sheets were laminated in the same direction as they were, and this laminated body was hermetically packaged. The paper used was glued masking paper that was slightly wider than the sheet width so that it protruded about 10 mm on both sides of the sheet. In addition, water was sprayed and included on the paste application surface side and attached to the sheet surface. When the glued masking paper is used as described above, it is possible to easily carry out adhesion and adhesion to the extruded sheet.
The laminate in a state of being hermetically packaged was subjected to water crosslinking treatment by heating in an oven at 80 ° C. for 12 to 24 hours. And after the water cross-linking treatment, a hole was made in the sealed package to scatter excess water.
シラン架橋性の水架橋ポリオレフィン樹脂（三菱化学製「リンクロン−Ｘ」）を押出成形し、水分を含ませた紙を前記成形したシートの片面にインラインで貼り付けて、そのままロール巻きし捲回体とした。この捲回体を密封包装した。前記紙は、糊付マスキング紙を用い、その幅をシート幅より若干広くしてシートの両側に約１０mmずつはみ出すようにした。また、糊の塗布面側に霧吹きで水分を噴射して含ませ、シート表面に貼り付けた。
以下、実施例１と同様に水架橋処理をした。
Silane-crosslinkable water-crosslinked polyolefin resin (Mitsubishi Chemical "Linklon-X") is extrusion molded, and water-impregnated paper is pasted inline on one side of the molded sheet and rolled as it is. The body. The wound body was hermetically packaged. The paper used was glued masking paper that was slightly wider than the sheet width so that it protruded about 10 mm on both sides of the sheet. In addition, water was sprayed and included on the paste application surface side and attached to the sheet surface.
Thereafter, water crosslinking treatment was performed in the same manner as in Example 1.
Claims (4)
The method for producing a water-crosslinked polyolefin sheet according to any one of claims 1 to 3, wherein the sealed state of the package is released after the cross-linking treatment of the water-crosslinked polyolefin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003277206A JP2005041984A (en) | 2003-07-22 | 2003-07-22 | Method of manufacturing water-crosslinking polyolefin sheet |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2003277206A JP2005041984A (en) | 2003-07-22 | 2003-07-22 | Method of manufacturing water-crosslinking polyolefin sheet |
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| JP2005041984A true JP2005041984A (en) | 2005-02-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8685731B2 (en) | 2006-07-14 | 2014-04-01 | Dsm Ip Assets B.V. | Process for the culturing of cells |
| US9260695B2 (en) | 2004-03-05 | 2016-02-16 | Dpx Holdings B.V. | Process for cell culturing by continuous perfusion |
-
2003
- 2003-07-22 JP JP2003277206A patent/JP2005041984A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9260695B2 (en) | 2004-03-05 | 2016-02-16 | Dpx Holdings B.V. | Process for cell culturing by continuous perfusion |
| US8685731B2 (en) | 2006-07-14 | 2014-04-01 | Dsm Ip Assets B.V. | Process for the culturing of cells |
| US9469865B2 (en) | 2006-07-14 | 2016-10-18 | Dpx Holdings B.V. | Process for the culturing of cells |
| US9670520B2 (en) | 2006-07-14 | 2017-06-06 | Patheon Holdings | B.V. | Process for the culturing of cells |
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