JP2514543B2 - Method for producing synthetic resin foam sheet having melt coating - Google Patents
Method for producing synthetic resin foam sheet having melt coatingInfo
- Publication number
- JP2514543B2 JP2514543B2 JP24576092A JP24576092A JP2514543B2 JP 2514543 B2 JP2514543 B2 JP 2514543B2 JP 24576092 A JP24576092 A JP 24576092A JP 24576092 A JP24576092 A JP 24576092A JP 2514543 B2 JP2514543 B2 JP 2514543B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- foam sheet
- heat
- synthetic resin
- heating
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶融被膜を有する合成
樹脂発泡体シートの製造方法に関し、スピーカーのコー
ンエッジ等の見栄えの良さが要求されるもの、化粧パフ
用基材等に利用される。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a synthetic resin foam sheet having a molten coating, which is used as a base material for cosmetic puffs, etc., which requires good appearance such as a cone edge of a speaker. .
【０００２】[0002]
【従来の技術】従来の溶融被膜を有する合成樹脂発泡体
シートの製造方法としては、熱溶融性の合成樹脂発泡体
シートを熱板若しくは熱ロールで押圧して上記発泡体シ
ートの表面に溶融被膜を形成せしめる方法が知られてい
る（特開昭５１−１４８７６６号公報）。また、可撓性
合成樹脂発泡体シートに、所望の陥没模様に対応する空
孔を有する金属板等を載置し、更にその上から熱板或い
は熱ロールを押圧して、上記金属板等の空孔部分の発泡
体を溶融して所望の陥没模様を有する方法も知られてい
る（特公昭５７−２２７３９号公報）。2. Description of the Related Art As a conventional method for producing a synthetic resin foam sheet having a molten coating, a hot-melt synthetic resin foam sheet is pressed with a hot plate or a heat roll to form a molten coating on the surface of the foam sheet. There is known a method of forming a film (JP-A-51-148766). In addition, a metal plate or the like having holes corresponding to a desired depression pattern is placed on the flexible synthetic resin foam sheet, and a hot plate or a heat roll is further pressed onto the metal plate or the like to form the metal plate or the like. There is also known a method in which the foamed material in the pores is melted to have a desired depression pattern (Japanese Patent Publication No. 57-22739).
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記前者の方
法では、図２（実寸）に示すようにその溶融表面が比較
的大きな凹凸模様及びしわ（黒色部が凸部、白色部が凹
部）があり、外観に優れない。また、後者の方法では、
所望の陥没模様を有するシートを製造するものであり、
平滑面等は形成できない。更に、この両者ともに、加熱
前の樹脂発泡体シートが直接、加熱ロールに接触するの
で、加熱効果に優れるものの、熱ロール表面に付着した
溶融物が熱分解し、熱ロール表面に積層し、更にこれが
溶融被膜表面に付着するため、製品表面の品位を損な
い、また連続生産ができない。However, in the former method, as shown in FIG. 2 (actual size), the melting surface has a relatively large uneven pattern and wrinkles (black portions are convex portions, white portions are concave portions). Yes, the appearance is not good. Also, in the latter method,
To produce a sheet having a desired depression pattern,
No smooth surface can be formed. Further, in both of these, since the resin foam sheet before heating directly contacts the heating roll, the heating effect is excellent, but the melt adhered to the surface of the heating roll is thermally decomposed and laminated on the surface of the heating roll. Since this adheres to the surface of the molten coating, the quality of the product surface is impaired and continuous production is not possible.
【０００４】本発明は、上記観点に鑑みなされたもので
あり、連続生産に適し、所望の平滑等の表面を汚すこと
なく安定的に、溶融被膜を有する合成樹脂発泡体シート
を製造できる方法を提供することを目的とする。The present invention has been made in view of the above point of view, and provides a method for producing a synthetic resin foam sheet having a molten coating, which is suitable for continuous production and can stably produce a desired smooth surface without staining the surface. The purpose is to provide.
【０００５】[0005]
【課題を解決するための手段】本発明の溶融被膜を有す
る合成樹脂発泡体シートの製造方法は、熱溶融性の合成
樹脂発泡体シートの少なくとも一表面上に耐熱性シート
を配置し、更に、該耐熱性シートの上から該発泡体シー
トを加熱できるように加熱ロール又は加熱板を備える一
対の押圧体間に、該耐熱性シート及び該発泡体シートを
移送し、これらを押圧下、該耐熱性シートを介して加熱
して、該発泡体シートの加熱表面に溶融被膜が形成され
ることを特徴とする。The method for producing a synthetic resin foam sheet having a melt coating of the present invention comprises a heat-resistant sheet disposed on at least one surface of a heat-meltable synthetic resin foam sheet, and further comprising: The heat-resistant sheet and the foam sheet are transferred between a pair of pressing bodies equipped with a heating roll or a heating plate so that the foam sheet can be heated from above the heat-resistant sheet, and the heat-resistant sheet and the heat-resistant sheet are pressed under the heat-resistant sheet. And a molten film is formed on the heated surface of the foam sheet by heating the foam sheet.
【０００６】上記発泡体シートは、熱溶融性を有するも
のであればよく、例えば、ポリエチレン、ポリプロピレ
ン、ポリスチレン、ポリ塩化ビニル等の熱可塑性樹脂か
らなるもの、又はポリウレタンフォーム（特に可撓性ポ
リウレタンフォーム）等からなるものが挙げられる。上
記耐熱性シートは、使用する温度に耐えることができ、
また熱ロール等を汚さないものであればよく、例えば、
フッ素樹脂シート、シリコン樹脂シート、又は、織布、
不織布若しくは紙をフッ素樹脂若しくはシリコン樹脂に
て表面加工をしたシート等を用いることができる。この
厚さはできれだけ薄いものが加熱の点にて好ましく、一
方、薄すぎては強度が十分でなく、通常、０．１〜０．
５ｍｍである。この厚さでは、加熱効率が良いこと及び
強度の双方の点にて、バランスがとれて好ましいからで
ある。The above-mentioned foam sheet may be of any type as long as it has a heat-melting property, and is made of, for example, a thermoplastic resin such as polyethylene, polypropylene, polystyrene or polyvinyl chloride, or polyurethane foam (particularly flexible polyurethane foam). ) And the like. The heat-resistant sheet can withstand the temperature used,
Moreover, it is sufficient if it does not stain the heat roll, for example,
Fluororesin sheet, silicone resin sheet, or woven cloth,
A sheet or the like in which a non-woven fabric or paper is surface-treated with a fluororesin or a silicone resin can be used. This thickness is preferably as thin as possible from the viewpoint of heating, while too thin, the strength is not sufficient, and usually 0.1 to 0.
It is 5 mm. This thickness is preferable because it is well balanced in terms of both good heating efficiency and strength.
【０００７】[0007]
【実施例】以下、実施例により本発明を具体的に説明す
る。但し、本発明は、以下の実施例に限定されるもので
はない。 実施例１ 軟質ポリウレタンフォームシート（ポリエステル系、白
色、厚さ１３ｍｍ、見掛け比重０．０３２）及び耐熱性
シート〔ガラスクロスをフッ素樹脂で被覆したもの、厚
さ；０．０８〜０．３ｍｍ、表面はほとんど平滑な面と
いえるが、精密に言えば微細な凹凸（繊維を織った場合
の折り目）がある。〕を準備する。そして、図１に示す
ように、加熱ロール３と送りロール４との間（隙間；４
ｍｍ、圧縮率；３１％）に、上記軟質ポリウレタンフォ
ームシート１と耐熱性シート２を併せたものを、この耐
熱性シート２を加熱ロール３側に配置して、搬送する。
この際のロール加熱温度は２８０〜４００℃（特に３４
０℃）、ロールスピードは周速２〜１２ｍ／分（特に５
〜６ｍ／分）である。The present invention will be described below in detail with reference to examples. However, the present invention is not limited to the following examples. Example 1 Flexible polyurethane foam sheet (polyester type, white, thickness 13 mm, apparent specific gravity 0.032) and heat resistant sheet [glass cloth coated with fluororesin, thickness; 0.08 to 0.3 mm, surface Can be said to be almost a smooth surface, but to be precise, it has fine irregularities (folds when fibers are woven). ] To prepare. Then, as shown in FIG. 1, between the heating roll 3 and the feed roll 4 (gap: 4
mm, compression rate: 31%), the flexible polyurethane foam sheet 1 and the heat resistant sheet 2 are combined, and the heat resistant sheet 2 is arranged on the heating roll 3 side and conveyed.
The roll heating temperature at this time is 280 to 400 ° C. (especially 34
0 ° C), roll speed is 2 to 12 m / min (especially 5
~ 6 m / min).
【０００８】ロールによる加熱後は、厚さが１０ｍｍで
あり、その加熱側表面は色が薄黄土色となり、溶融被膜
１ｂが形成されていることが判り、この溶融被膜の表面
はほとんど平滑な面（触ってみるとツルツルした表面）
となっている。一方、比較例として、上記耐熱性シート
を用いずに上記と同条件にて加熱した所、その表面は図
２に示すように、比較的大きな凹凸及びしわが生じてお
り、その見栄えが悪い。尚、図２中の黒色部が凸部であ
り、白色部が凹部を示す。従って、この本発明品では従
来例のような凹凸面、しわ等は全くなく、美観に優れて
いる。また、上記いずれの温度範囲、ロール速度におい
ても同様に良好な平滑面が得られた。また、この耐熱性
シートは、フッ素樹脂で加工した表面を有するので、加
熱後のウレタンフォームシートからの剥離にも優れる
し、その厚さが薄いので、上記のような短時間にて表面
を溶融できた。更に、ロール表面自身にフッ素加工を施
すことも考えられるが、この場合は常に３００℃前後の
温度にロールが加熱されているので、それに耐えられ
ず、フッ素加工面の剥離、ひび割れの発生となるが、一
方、本願では、熱履歴が少ないので、上記フッ素処理し
た耐熱性シートは十分な耐熱性を示した。また、一対の
ロールを押圧体としているので、連続製法とすることが
でき、大変便利である。After heating with a roll, the thickness was 10 mm, and it was found that the surface on the heating side became a pale ocher color and the molten coating film 1b was formed. The surface of the molten coating film was almost smooth. (Smooth surface when touched)
Has become. On the other hand, as a comparative example, when the sheet was heated under the same conditions as above without using the heat-resistant sheet, the surface thereof had relatively large irregularities and wrinkles, as shown in FIG. The black portions in FIG. 2 are convex portions and the white portions are concave portions. Therefore, the product of the present invention is excellent in aesthetic appearance without any uneven surface or wrinkle unlike the conventional example. Further, similarly good smooth surfaces were obtained in any of the above temperature ranges and roll speeds. In addition, since this heat resistant sheet has a surface processed with a fluororesin, it is excellent in peeling from the urethane foam sheet after heating, and since its thickness is thin, it melts the surface in a short time as described above. did it. Further, it is conceivable to subject the roll surface itself to fluorination, but in this case the roll is always heated to a temperature of around 300 ° C., so that it cannot withstand it, and the fluorination surface peels off and cracks occur. However, in the present application, since the heat history is small, the fluorine-treated heat resistant sheet showed sufficient heat resistance. Further, since the pair of rolls are used as the pressing body, the continuous manufacturing method can be performed, which is very convenient.
【０００９】尚、本発明においては、前記具体的実施例
に示すものに限られず、目的、用途に応じて本発明の範
囲内で種々変更した実施例とすることができる。即ち、
上記送りロールも加熱ロールとすることができ、この場
合は発泡体シートの両表面に、美観に優れた溶融被膜を
形成できる。また、加熱時の圧縮率は、１０〜９０％の
範囲にすることができる。これが１０％未満では、加圧
力の不足により熱伝達が十分になされず満足し得る溶融
被膜が形成できず、７０％を越えると圧縮過剰となり溶
融被膜面にしわやひび割れが発生しやすくなり、好まし
くない。加熱温度、加熱時間、圧縮率等は、使用する素
材の種類により種々選択される。更に、上記加熱ロール
の代わりに加熱板を用いることもできる。この加熱板と
しては、板体の中に加熱コイル若しくはヒータ等を内蔵
したもの、加熱媒体を流入できるようにしたもの等を用
いることができる。この場合は、通常、バッチ運転とな
る。The present invention is not limited to the specific examples described above, and various modifications may be made within the scope of the present invention according to the purpose and application. That is,
The feed roll can also be a heating roll, and in this case, a molten coating film having an excellent appearance can be formed on both surfaces of the foam sheet. Further, the compressibility during heating can be in the range of 10 to 90%. If it is less than 10%, heat transfer is insufficient due to insufficient pressurization, and a satisfactory molten coating cannot be formed. If it exceeds 70%, compression is excessive and wrinkles and cracks tend to occur on the surface of the molten coating. Absent. The heating temperature, heating time, compressibility, etc. are variously selected according to the type of material used. Further, a heating plate may be used instead of the heating roll. As the heating plate, a plate having a heating coil, a heater, or the like built into the plate, a plate into which a heating medium can be introduced, or the like can be used. In this case, batch operation is usually performed.
【００１０】[0010]
【発明の効果】本発明の製造方法によれば、耐熱性シー
トを介して加熱されるので、加熱ロール等の加熱面に溶
融・分解物が付着せず、そのため製品の品質に優れる。
また、この耐熱性シートが汚れにくいため、繰り返しこ
のシートを利用できるし、また繰り返し使用しても製品
の品質を低下させることも少ない。更に、この耐熱性シ
ートを介して溶融被膜を形成するので、従来のように、
比較的大きな凹凸、しわが生じることがなく、そのため
見栄えが大変良い。また、この耐熱性シートを実質上平
滑な面としたり、所定の模様を有する面としたりするこ
とにより、これが転写された模様等を有する被膜が形成
されるので、この耐熱性シートの模様等を種々選択する
ことにより、種々の模様等を備える溶融被膜を形成する
ことができる。According to the manufacturing method of the present invention, since it is heated through the heat resistant sheet, the melted / decomposed product does not adhere to the heating surface of the heating roll or the like, and therefore the quality of the product is excellent.
Further, since this heat resistant sheet is less likely to get dirty, this sheet can be used repeatedly, and even if it is repeatedly used, the quality of the product does not deteriorate. Furthermore, since a molten coating film is formed through this heat resistant sheet, as in the past,
There are no relatively large irregularities or wrinkles, so it looks very good. Further, by forming the heat-resistant sheet into a substantially smooth surface or a surface having a predetermined pattern, a coating film having a transferred pattern or the like is formed. By selecting variously, it is possible to form a molten coating film having various patterns and the like.
【図１】実施例において溶融被膜を有する合成樹脂発泡
体シートを製造する状態を示す説明図である。FIG. 1 is an explanatory view showing a state of producing a synthetic resin foam sheet having a molten coating in Examples.
【図２】従来において製造される合成樹脂発泡体シート
の溶融被膜の表面を示す説明図（実寸）である。FIG. 2 is an explanatory diagram (actual size) showing a surface of a molten coating film of a synthetic resin foam sheet manufactured in the related art.
１；加熱前の合成樹脂発泡体シート、１ａ；加熱後の合
成樹脂発泡体シート、１ｂ；溶融被膜、２；耐熱性シー
ト、３；加熱ロール、４；送りロール。1; synthetic resin foam sheet before heating, 1a; synthetic resin foam sheet after heating, 1b; melt coating, 2; heat resistant sheet, 3; heating roll, 4; feed roll.
Claims (2)
くとも一表面上に耐熱性シートを配置し、更に、該耐熱
性シートの上から該発泡体シートを加熱できるように加
熱ロール又は加熱板を備える一対の押圧体間に、該耐熱
性シート及び該発泡体シートを移送し、これらを押圧
下、該耐熱性シートを介して加熱して、該発泡体シート
の加熱表面に溶融被膜が形成されることを特徴とする溶
融被膜を有する合成樹脂発泡体シートの製造方法。1. A heat-resistant sheet is disposed on at least one surface of a heat-meltable synthetic resin foam sheet, and a heating roll or a heating plate is provided so that the foam sheet can be heated from above the heat-resistant sheet. The heat resistant sheet and the foam sheet are transferred between a pair of pressing bodies, and these are heated through the heat resistant sheet under pressure to form a molten coating on the heated surface of the foam sheet. A method for producing a synthetic resin foam sheet having a melt coating, comprising:
シリコン樹脂シート、又は、織布、不織布若しくは紙を
フッ素樹脂若しくはシリコン樹脂にて表面加工をしたシ
ートであり、その厚さが０．５ｍｍ以下である請求項１
記載の溶融被膜を有する合成樹脂発泡体シートの製造方
法。2. The heat resistant sheet is a fluororesin sheet,
A silicon resin sheet, or a sheet obtained by surface-treating woven cloth, non-woven cloth, or paper with fluororesin or silicon resin, and having a thickness of 0.5 mm or less.
A method for producing a synthetic resin foam sheet having the melt coating as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24576092A JP2514543B2 (en) | 1992-08-21 | 1992-08-21 | Method for producing synthetic resin foam sheet having melt coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24576092A JP2514543B2 (en) | 1992-08-21 | 1992-08-21 | Method for producing synthetic resin foam sheet having melt coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0664056A JPH0664056A (en) | 1994-03-08 |
| JP2514543B2 true JP2514543B2 (en) | 1996-07-10 |
Family
ID=17138396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24576092A Expired - Fee Related JP2514543B2 (en) | 1992-08-21 | 1992-08-21 | Method for producing synthetic resin foam sheet having melt coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2514543B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5468188B2 (en) * | 2006-10-27 | 2014-04-09 | 株式会社イノアックコーポレーション | Sealing material and manufacturing method thereof |
| JP5990435B2 (en) * | 2011-10-11 | 2016-09-14 | 日東電工株式会社 | Resin foam sheet and resin foam composite |
-
1992
- 1992-08-21 JP JP24576092A patent/JP2514543B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0664056A (en) | 1994-03-08 |
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