JPH04371826A - Surface-treating method of crosslinked resin foam - Google Patents
Surface-treating method of crosslinked resin foamInfo
- Publication number
- JPH04371826A JPH04371826A JP15020391A JP15020391A JPH04371826A JP H04371826 A JPH04371826 A JP H04371826A JP 15020391 A JP15020391 A JP 15020391A JP 15020391 A JP15020391 A JP 15020391A JP H04371826 A JPH04371826 A JP H04371826A
- Authority
- JP
- Japan
- Prior art keywords
- foam
- crosslinked
- resin foam
- crosslinked resin
- resin
- 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.)
- Pending
Links
- 239000006260 foam Substances 0.000 title claims abstract description 45
- 229920005989 resin Polymers 0.000 title claims abstract description 31
- 239000011347 resin Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000004381 surface treatment Methods 0.000 claims description 11
- 229920003020 cross-linked polyethylene Polymers 0.000 abstract description 3
- 239000004703 cross-linked polyethylene Substances 0.000 abstract description 3
- -1 polyethylene Polymers 0.000 description 11
- 239000004698 Polyethylene Substances 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 8
- 230000037303 wrinkles Effects 0.000 description 5
- 238000005187 foaming Methods 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、ポリエチレン架橋発
泡シート等の樹脂架橋発泡体の表面を平滑にする等、樹
脂架橋発泡体の表面処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a method for surface treatment of crosslinked resin foams such as polyethylene crosslinked foam sheets, such as smoothing the surfaces of crosslinked resin foams.
【０００２】0002
【従来の技術】発泡剤含有ポリエチレンをシート状に押
出し、これを放射線照射や架橋剤により架橋した後、こ
れを加熱発泡したポリエチレン架橋発泡シートのような
樹脂架橋発泡体は、均一微細な気泡を持つ発泡体であっ
て、柔軟性に富み、表面が平滑で美麗であり、種々の用
途に用いられている。[Prior Art] Resin crosslinked foams, such as polyethylene crosslinked foam sheets, are made by extruding polyethylene containing a foaming agent into a sheet, crosslinking it with radiation or using a crosslinking agent, and then heating and foaming it. It is a foam with excellent flexibility and a smooth and beautiful surface, and is used for a variety of purposes.
【０００３】ところで、このような樹脂架橋発泡体であ
っても、例えば、粘着テープ用基材のような用途では、
表面平滑性や厚さの均一性が更に要求されることがある
。その場合、樹脂架橋発泡体を一旦スライスし、その表
面を平滑化処理して用いることが多い。[0003] However, even with such crosslinked resin foams, for example, in applications such as base materials for adhesive tapes,
Surface smoothness and thickness uniformity may also be required. In that case, the crosslinked resin foam is often sliced and its surface smoothed before use.
【０００４】このようにスライスした樹脂架橋発泡体の
スライス面の平滑化処理方法としては、図２に示すとお
り、スライスした樹脂架橋発泡シート１ａのスライス面
にバーナーＡの火炎を当ててスライス面を溶融し、その
溶融面を鏡面ロールＢで押圧し冷却する方法がとられ、
このことによってシート１ａの表面を平滑にすると共に
厚さの均一化が図られていた。As shown in FIG. 2, the method for smoothing the sliced surface of the crosslinked resin foam sheet 1a sliced in this way is to apply flame from burner A to the sliced surface of the sliced resin crosslinked foam sheet 1a to smooth the sliced surface. The method is to melt it, press the molten surface with a mirror roll B, and cool it.
This made the surface of the sheet 1a smooth and the thickness uniform.
【０００５】[0005]
【発明が解決しようとする課題】上記の方法によれば、
スライスという煩瑣な工程を必要とする。更に、スライ
ス面を火炎で溶融しているため、樹脂架橋発泡シート自
体が必要以上に加熱され、気泡が収縮してシートの発泡
倍率が低下する、冷却収縮に伴ってシート特にその端部
側にしわが発生し易いといった問題があった。[Problem to be solved by the invention] According to the above method,
It requires a complicated process of slicing. Furthermore, since the sliced surface is melted with flame, the resin crosslinked foam sheet itself is heated more than necessary, causing the bubbles to shrink and the foaming ratio of the sheet to decrease.As the sheet shrinks on cooling, the sheet especially at its edges is heated. There was a problem that it was easy for me to occur.
【０００６】なお、スライス工程を経ず、樹脂架橋発泡
シートに火炎処理し、ロール押圧して表面平滑化と厚み
均一化をなすことも考えられるが、この場合はスライス
面と異なり発泡シートの表皮部分を溶融しなければなら
ず、溶融し過ぎて、厚みを大きく減じてしまう結果にな
ってしまうので採用できない。[0006] It is also possible to flame-treat the resin crosslinked foam sheet without going through the slicing process and then roll it to make the surface smooth and the thickness uniform, but in this case, unlike the sliced surface, the surface of the foam sheet It cannot be used because it requires melting a portion, which would result in too much melting and greatly reduce the thickness.
【０００７】この発明は、上記問題を解決すべく、樹脂
架橋発泡体を特にスライスする必要がなく、発泡倍率が
低下せず、しわの発生のない樹脂架橋発泡体の表面処理
方法を提供することを目的とする。[0007] In order to solve the above-mentioned problems, the present invention provides a method for surface treatment of a crosslinked resin foam that does not require special slicing of the resin crosslinked foam, does not reduce the expansion ratio, and does not cause wrinkles. With the goal.
【０００８】[0008]
【課題を解決するための手段】この発明の樹脂架橋発泡
体の表面処理方法は、樹脂架橋発泡体の表面を無端ベル
トで押圧するとともに、樹脂架橋発泡体の表面の加熱及
び冷却をこの順に無端ベルトを介して行うことを特徴と
する。[Means for Solving the Problems] The method for surface treatment of crosslinked resin foam of the present invention involves pressing the surface of the crosslinked resin foam with an endless belt, and heating and cooling the surface of the resin crosslinked foam in this order. It is characterized by being carried out through a belt.
【０００９】また、上記発明において、加熱ロールと冷
却ロールとの間に掛け渡した無端ベルトを用いることを
特徴とする。この発明において、樹脂架橋発泡体として
は、例えば、ポリエチレンやポリプロピレンなどのポリ
オレフィン、エチレン−酢酸ビニル共重合体やエチレン
−プロピレン共重合体などのオレフィン共重合体などが
あげられる。[0009] Furthermore, the above invention is characterized in that an endless belt is used that is stretched between the heating roll and the cooling roll. In this invention, examples of the resin crosslinked foam include polyolefins such as polyethylene and polypropylene, and olefin copolymers such as ethylene-vinyl acetate copolymers and ethylene-propylene copolymers.
【００１０】また、上記無端ベルトとしては、特に限定
されるものでないが、耐熱性が優れ、表面性のよいポリ
四フッ化エチレンのシートからなるものが好適に使用さ
れる。なお、この無端ベルトの樹脂架橋発泡体の表面に
押圧する面については、平滑なものにかぎられず、要求
される表面状態に応じた表面形状、例えば、凹凸模様を
付したものとすることができる。[0010] The endless belt is not particularly limited, but one made of polytetrafluoroethylene sheet, which has excellent heat resistance and good surface properties, is preferably used. Note that the surface of this endless belt that is pressed against the surface of the resin crosslinked foam is not limited to a smooth surface, but may have a surface shape depending on the required surface condition, for example, a surface with an uneven pattern. .
【００１１】なお、この発明においては、無端ベルトで
樹脂架橋発泡体の表面を直接押圧すること以外にも、樹
脂架橋発泡体の表面を別の表面材で覆い、これを無端ベ
ルトで押圧し両者を一体化するような表面処理にも適用
可能である。In addition, in this invention, in addition to directly pressing the surface of the resin crosslinked foam with an endless belt, the surface of the resin crosslinked foam is covered with another surface material, and this is pressed with the endless belt, so that both surfaces are pressed together. It can also be applied to surface treatments that integrate.
【００１２】0012
【作用】樹脂架橋発泡体の表面は、無端ベルトで押圧さ
れるとともに、無端ベルトを介して加熱されるから、発
泡体は過度に加熱することなく無端ベルト面に応じた表
面状態とされる。次いで無端ベルトが押圧されている間
に発泡体の表面は冷却されるから、加熱収縮によるしわ
の発生が抑制される。[Operation] Since the surface of the resin crosslinked foam is pressed by the endless belt and heated via the endless belt, the foam is brought into a surface condition that corresponds to the surface of the endless belt without being excessively heated. Next, while the endless belt is pressed, the surface of the foam is cooled, so that wrinkles due to heat shrinkage are suppressed.
【００１３】[0013]
【実施例】以下、樹脂架橋発泡体としてポリエチレン架
橋発泡シートを用いたこの発明の実施例を図面を参照し
て説明する。EXAMPLES Hereinafter, examples of the present invention using a polyethylene crosslinked foam sheet as the resin crosslinked foam will be described with reference to the drawings.
【００１４】図１はこの発明の樹脂架橋発泡体の表面処
理方法の説明図であり、１は、ポリエチレン架橋発泡シ
ート、２、２はポリ四フッ化エチレンのシートからなる
無端ベルトで所定間隔に設置されている。３、３は加熱
ロール、４、４は冷却ロール、５、６、７は補助ロール
である。補助ロール５、６、７のうち、５は加熱用とし
ての補助ロールであり、また、６、７は冷却用としての
補助ロールとされている。補助ロールの数及び加熱用と
冷却用との区割りは必要に応じてされる。FIG. 1 is an explanatory view of the surface treatment method for resin crosslinked foam according to the present invention, in which 1 is a polyethylene crosslinked foam sheet, 2 is an endless belt made of polytetrafluoroethylene sheets, and 2, 2 and 3 are sheets of polytetrafluoroethylene. is set up. 3 and 3 are heating rolls, 4 and 4 are cooling rolls, and 5, 6 and 7 are auxiliary rolls. Among the auxiliary rolls 5, 6, and 7, 5 is an auxiliary roll for heating, and 6 and 7 are auxiliary rolls for cooling. The number of auxiliary rolls and division into heating rolls and cooling rolls are determined as necessary.
【００１５】ポリエチレン架橋発泡シート１を、無端ベ
ルト２、２間に連続的に送る。ポリエチレン架橋発泡シ
ート１は、加熱ロール１、１及び加熱用補助ロール５、
５により無端ベルト２、２を介してシート表面が加熱さ
れると共に、無端ベルト２、２の押圧により表面状態が
平滑化される。次いで、シート１はベルト２、２に保持
されたまま、冷却補助ロール６、７及び冷却ロール４、
４により冷却され、正面処理が完了する。A crosslinked polyethylene foam sheet 1 is continuously fed between endless belts 2, 2. The polyethylene crosslinked foam sheet 1 includes heating rolls 1, 1 and a heating auxiliary roll 5,
5 heats the sheet surface via the endless belts 2, 2, and the surface condition is smoothed by the pressure of the endless belts 2, 2. Next, while the sheet 1 is held by the belts 2, 2, the cooling auxiliary rolls 6, 7 and the cooling roll 4,
4, the front surface treatment is completed.
【００１６】次に実験例に基づいてこの発明の効果を説
明する。無端ベルト２、２間を０．６ｍｍとし、加熱ロ
ール３、３及び加熱補助ロール４、４の温度を１２０〜
１８０℃とし、冷却補助ロール６、７及び冷却ロール４
、４は水循環による冷却とし、上記した図示の方法によ
り、スライスしていない０．６〜０．７ｍｍ厚さのポリ
エチレン架橋発泡シートの両表面の処理を連続的に行っ
た。Next, the effects of the present invention will be explained based on experimental examples. The distance between the endless belts 2, 2 is 0.6 mm, and the temperature of the heating rolls 3, 3 and heating auxiliary rolls 4, 4 is 120~
180°C, cooling auxiliary rolls 6, 7 and cooling roll 4.
, 4 was cooled by water circulation, and both surfaces of an unsliced crosslinked polyethylene foam sheet having a thickness of 0.6 to 0.7 mm were continuously treated by the method shown in the drawings.
【００１７】その結果、ポリエチレン架橋発泡シートに
は、しわの発生も見られず、その両表面はベルト面と同
様の平滑性を有し、厚さのばらつきもなかった。また、
発泡倍率の低下も見られなかった。As a result, no wrinkles were observed in the polyethylene crosslinked foam sheet, both surfaces had the same smoothness as the belt surface, and there was no variation in thickness. Also,
No decrease in foaming ratio was observed.
【００１８】[0018]
【発明の効果】以上のとおり、この発明の樹脂架橋発泡
体の表面処理方法においては、発泡体表面がベルト面で
押圧されるとともに、無端ベルトを介して加熱されるか
ら、発泡体は過度に加熱することなくベルト面に応じた
表面状態とされ、無端ベルトの押圧によって加熱収縮に
伴うしわの発生が抑制される。その結果、発泡倍率の低
下がなく、しわのない、表面状態の優れ、且つ厚さのば
らつきのない樹脂架橋発泡体が容易に得られる。Effects of the Invention As described above, in the surface treatment method for resin crosslinked foam of the present invention, the surface of the foam is pressed by the belt surface and heated via the endless belt, so that the foam is not heated excessively. The surface condition is made to match the belt surface without heating, and the generation of wrinkles due to heat shrinkage is suppressed by the pressure of the endless belt. As a result, a resin crosslinked foam with no reduction in expansion ratio, no wrinkles, excellent surface condition, and no variation in thickness can be easily obtained.
【図１】この発明の樹脂架橋発泡体の表面処理方法の説
明図である。FIG. 1 is an explanatory diagram of a method for surface treatment of a crosslinked resin foam according to the present invention.
【図２】従来の表面処理方法の説明図である。FIG. 2 is an explanatory diagram of a conventional surface treatment method.
１、１ａ 樹脂架橋発泡体 ２、２ 無端ベルト ３、３ 加熱ロール ４、４ 冷却ロール 1, 1a Resin crosslinked foam 2, 2 Endless belt 3, 3 Heating roll 4, 4 Cooling roll
Claims (2)
押圧するとともに、樹脂架橋発泡体の表面の加熱及び冷
却をこの順に無端ベルトを介して行うことを特徴とする
樹脂架橋発泡体の表面処理方法。1. Surface treatment of a crosslinked resin foam, characterized in that the surface of the crosslinked resin foam is pressed with an endless belt, and the surface of the crosslinked resin foam is heated and cooled in this order via the endless belt. Method.
渡した無端ベルトを用いることを特徴とする請求項１記
載の樹脂架橋発泡体の表面処理方法。2. The method for surface treatment of a crosslinked resin foam according to claim 1, characterized in that an endless belt is used that is stretched between a heating roll and a cooling roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15020391A JPH04371826A (en) | 1991-06-21 | 1991-06-21 | Surface-treating method of crosslinked resin foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15020391A JPH04371826A (en) | 1991-06-21 | 1991-06-21 | Surface-treating method of crosslinked resin foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04371826A true JPH04371826A (en) | 1992-12-24 |
Family
ID=15491780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15020391A Pending JPH04371826A (en) | 1991-06-21 | 1991-06-21 | Surface-treating method of crosslinked resin foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04371826A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU668629B2 (en) * | 1993-02-25 | 1996-05-09 | Idemitsu Petrochemical Co., Ltd. | Method for producing thermoplastic resin sheet or film |
| JP2010274509A (en) * | 2009-05-28 | 2010-12-09 | Nitta Haas Inc | Method for manufacturing foam |
| US9260577B2 (en) | 2009-07-14 | 2016-02-16 | Toray Plastics (America), Inc. | Crosslinked polyolefin foam sheet with exceptional softness, haptics, moldability, thermal stability and shear strength |
-
1991
- 1991-06-21 JP JP15020391A patent/JPH04371826A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU668629B2 (en) * | 1993-02-25 | 1996-05-09 | Idemitsu Petrochemical Co., Ltd. | Method for producing thermoplastic resin sheet or film |
| JP2010274509A (en) * | 2009-05-28 | 2010-12-09 | Nitta Haas Inc | Method for manufacturing foam |
| US9260577B2 (en) | 2009-07-14 | 2016-02-16 | Toray Plastics (America), Inc. | Crosslinked polyolefin foam sheet with exceptional softness, haptics, moldability, thermal stability and shear strength |
| US10301447B2 (en) | 2009-07-14 | 2019-05-28 | Toray Plastics (America), Inc. | Crosslinked polyolefin foam sheet with exceptional softness, haptics, moldability, thermal stability and shear strength |
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