JPS5824454B2 - Netsuto Kosei Plastics - Tojiyouseikebutsu - Google Patents
Netsuto Kosei Plastics - TojiyouseikebutsuInfo
- Publication number
- JPS5824454B2 JPS5824454B2 JP49036662A JP3666274A JPS5824454B2 JP S5824454 B2 JPS5824454 B2 JP S5824454B2 JP 49036662 A JP49036662 A JP 49036662A JP 3666274 A JP3666274 A JP 3666274A JP S5824454 B2 JPS5824454 B2 JP S5824454B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- sheet
- temperature
- holes
- plastics
- 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
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Description
【発明の詳細な説明】
本発明は熱透孔性プラスチックスシート状成形物、更に
詳しくは通常の状態では（見掛は上）透孔を有しないが
、これをそのガラス転移点以上融点以下の温度範囲で加
熱すると微細な多数の透孔が復元される熱可塑性樹脂よ
りなる新規なシート状成形物に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat-permeable plastic sheet-like molded article, and more specifically, a heat-permeable plastic sheet-like molded article, which does not have any pores in its normal state (apparently), but which has a temperature above its glass transition point and below its melting point. The present invention relates to a novel sheet-shaped molded product made of a thermoplastic resin in which a large number of fine pores are restored when heated in a temperature range of .
本発明においてシート状成形物とは、主としてフィルム
又はシート状物を相称する。In the present invention, the sheet-like molded product mainly refers to a film or a sheet-like product.
また透孔とは成形物の表面から裏面へ貫通した微細な孔
または小孔をいう。In addition, the term "through hole" refers to a fine hole or small hole that penetrates from the surface to the back surface of a molded product.
従来プラスチックスフィルムによる加工品として、熱に
よる膨張性または収縮性のフィルムは知られている。2. Description of the Related Art Heat-expandable or shrinkable films are known as conventional plastic film processed products.
すなわち適当な温度下で応力を加えるとその歪が残留し
、この残留歪は適当な熱処理により回復してもとの状態
に戻る性質を利用したものである。In other words, when stress is applied at an appropriate temperature, the resulting strain remains, and this residual strain is recovered by appropriate heat treatment to return to its original state.
これはプラスチックスの記憶効果または記憶現象ともい
われており、例えば或種の延伸プラスチックスフィルム
はこれを加熱処理すれば収縮し、また或種の延伸プラス
チックチューブはこれを加熱処理することにより膨張す
るものがあるが、これらはいずれも上記性質を利用した
ものである。This is also referred to as the memory effect or memory phenomenon of plastics; for example, some types of stretched plastic film shrink when heated, and certain types of stretched plastic tubes expand when heated. There are some, but all of these utilize the above properties.
本発明はプラスチックスのかべろ性質を利用し全く新規
にしてかつ極めて有用なシート状成形物を提供するもの
である。The present invention utilizes the wall-like properties of plastics to provide a completely new and extremely useful sheet-like molded product.
すなわち本発明は多数の細かい透孔を具えた熱可塑性樹
脂よりなるシート状物、例えば公知の方法で成形したシ
ート状物に任意の手段でその表面から裏面へ貫通する多
数の穿孔を設けるか、或は多数の表裏を貫通する透孔が
平均的に分布している構造体、たとえば熱可塑性樹脂よ
りなる繊維又は糸条で作られた網或は布のような編物も
しくは織物、熱可塑性樹脂よりなる多数の繊維を交点で
融着するか又は接着した不織布、或は溶融押出法により
交点を融着した熱可塑性樹脂よりなる網状物等を、その
樹脂のガラス転移点以上融点以下の温度で加圧プレスし
て前記透孔を閉塞し、これを冷却することによって容易
に得られる。That is, the present invention involves providing a sheet-like material made of a thermoplastic resin with a large number of fine holes, for example, a sheet-like material formed by a known method, with a large number of perforations penetrating from the front surface to the back surface thereof by any means, or Or a structure in which a large number of through holes penetrating the front and back are evenly distributed, such as a knitted fabric or woven fabric such as a net or cloth made of fibers or threads made of thermoplastic resin, or a structure made of thermoplastic resin. A nonwoven fabric made of a large number of fibers fused or bonded at their intersection points, or a net made of a thermoplastic resin whose intersections are fused by melt extrusion, at a temperature above the glass transition point and below the melting point of the resin. It can be easily obtained by pressing to close the through hole and cooling it.
こ又で閉塞とは、透孔部が押しつぶされて孔壁相互が密
接状態となることを云うものであって融着の如く、孔壁
相互が溶融流動して密着した状態ではない。In this case, the term "blockage" refers to the state in which the through-hole portion is crushed and the hole walls come into close contact with each other, and is not a state in which the hole walls melt and flow and come into close contact with each other, as in fusion.
透孔を閉塞する際の加圧時の温度範囲は前述のとおりで
あるが、使用する樹脂材料により異る。The temperature range during pressurization when closing the through hole is as described above, but it varies depending on the resin material used.
例えばポリエチレンであれば一３０〜１１５℃、ポリ塩
化ビニルであれば７０〜２００℃等の温度範囲である。For example, the temperature range is -30 to 115°C for polyethylene, and 70 to 200°C for polyvinyl chloride.
プレスは平板による方法でもロールによる方法でもよ（
、要は全面を均一にかつ融着せしめないようにプレスす
ることである。Pressing can be done using a flat plate or a roll (
The key is to press the entire surface uniformly and without fusion.
圧力も温度やシート状物の材質、厚さ等によって前述の
条件内で適宜決定すればよい。The pressure may also be appropriately determined within the above-mentioned conditions depending on the temperature, material, thickness, etc. of the sheet-like object.
一般に温度が高ければ圧力は低くてすむ。Generally, the higher the temperature, the lower the pressure.
本発明のシート状成形物はこのようにプレス（応力）に
より透孔が見掛は上−たん閉塞された状態で潜在してい
る（融着ではない）ものであるから再びガラス転移点以
上融点以下の温度に加熱されると残留歪が解放されても
とのようにシートの表裏を貫通する透孔が現われるもの
である。In the sheet-like molded product of the present invention, the pores are apparently closed (not fused) due to pressing (stress), so the melting point is higher than the glass transition point again. When the sheet is heated to a temperature below, the residual strain is released and the through holes that penetrate the front and back of the sheet appear as before.
透孔復元のための温度は上記ガラス転移点附近でも緩や
かに復元するが好ましくは見掛は上透孔を閉塞した温度
すなわちプレス時の温度より高く融点以下の温度であれ
ば透孔は最もシャープに復元される。The temperature for restoring the pores is that the pores are restored slowly even near the above glass transition point, but preferably the pores are sharpest if the apparent temperature is higher than the temperature at which the upper pores are closed, that is, higher than the temperature during pressing and below the melting point. will be restored to.
本発明において用いられる熱可塑性樹脂としては、例え
ばポリエチレン、ポリスチレン、ポリプロピレン等のポ
リオレフィン系樹脂、ポリビニルアルコール、ポリ塩化
ビニル、ポリ酢酸ビニル等のビニル系樹脂、ポリメチル
アクリレート、ポリメチルメタクリレート等のアクリル
樹脂、ポリ塩化ビニリデン樹脂、ポリエステル樹脂、ポ
リアミド樹脂、ポリカーボネート樹脂、またはそれらの
うちの共重合体もしくは混合物等があげられ、その他ゼ
ラチン、カゼイン等も用い得る。Examples of thermoplastic resins used in the present invention include polyolefin resins such as polyethylene, polystyrene, and polypropylene, vinyl resins such as polyvinyl alcohol, polyvinyl chloride, and polyvinyl acetate, and acrylic resins such as polymethyl acrylate and polymethyl methacrylate. , polyvinylidene chloride resin, polyester resin, polyamide resin, polycarbonate resin, or copolymers or mixtures thereof, and gelatin, casein, etc. may also be used.
本発明のシート状成形物は孔版形成による印刷又は捺染
用版材及び包装材料として使用される。The sheet-like molded product of the present invention is used as a printing plate material for printing or textile printing by stencil formation, and as a packaging material.
例えば本発明のシート状物に対しこれを部分的に加熱処
理すればその加熱された部分にのみ微細な表裏を貫通す
る透孔が復元されるので、所望の画像を熱によって付与
すればこれに相当する位置にのみ該透孔が復元し微細な
透孔群による画像が形成される。For example, if the sheet-like material of the present invention is partially heat-treated, fine through-holes penetrating the front and back sides will be restored only in the heated part, so if a desired image is applied to it by heat, it will be The through holes are restored only at the corresponding positions, and an image is formed by a group of fine through holes.
したがって孔版印刷用原紙或いはスクリーン捺染型とし
て用いることができる。Therefore, it can be used as a base paper for stencil printing or as a screen printing mold.
すなわちフィルムなどにスクリーン目に相当する細かな
透孔を始めに設けておくか、或いは網を用いてこれを前
述のように加熱プレスして細かな透孔を閉塞し、これに
所定の原稿を重ねて密着させ、熱線を照射（いずれの側
からでもよいが、好ましくは材料が不透明の場合は原稿
側から、原稿が不透明性のものである時は材料の側から
）すると、画像部分のみが選択的に加熱され、該画像に
相当する部分に始めの細かな透孔が開孔する。In other words, first make small holes corresponding to the mesh of the screen in the film, or use a net to heat press the film as described above to close the small holes, and then place the specified original into this. When they are stacked closely together and irradiated with heat rays (from either side, preferably from the document side if the material is opaque, or from the material side if the document is opaque), only the image area will be exposed. It is selectively heated, and first small holes are opened in the area corresponding to the image.
このような密着複写式の熱線照射に代えて熱鉄筆または
熱線レーザー光線、ライトペン等による書き込みによっ
ても同様に目的が達成される。Instead of the contact copying type heat ray irradiation, the purpose can be similarly achieved by writing with a hot iron pen, a heat laser beam, a light pen, or the like.
上述の操作で細かい透孔群による画像が得られたフィル
ム又はシートを公知の孔版印刷機或は捺染装置で印刷も
しくは捺染を行うと、画像部はインクが通過し、非画像
部は遮断されるから鮮明な印刷物が得られる。When a film or sheet with an image formed by a group of fine perforations obtained by the above operation is printed or textile-printed using a known stencil printing machine or textile printing device, ink passes through the image area and is blocked from the non-image area. Clear prints can be obtained.
このように本発明のシート状成形物を孔版印刷材料等に
適用するときは、極めて簡単に通常の作業環境でしかも
乾式プロセスで製版することができ、特殊の感光材料や
照射光線等を要せずしかもシャープな画像と高度の耐印
刷性能を有する等本発明のシート状成形物は優れた効果
を奏するものである。In this way, when the sheet-shaped molded product of the present invention is applied to a stencil printing material, etc., it can be made extremely easily in a normal working environment and in a dry process, and does not require special photosensitive materials or irradiation light. The sheet-like molded product of the present invention exhibits excellent effects such as a sharp image and high printing resistance.
また上記のほか各種の記録用材料としても応用範囲は広
い。In addition to the above, it has a wide range of applications as a variety of recording materials.
又使用するプラスチックスを選択することにより通常の
状態では気密、水密性を保ち、必要に応じ通気、通水性
となる包装用材料に使用すれば、例えば紅茶などのいわ
ゆるティーパック用として極めて好適なものが得られる
。In addition, by selecting the plastic to be used, it can maintain airtightness and watertightness under normal conditions, and can be used as a packaging material that is breathable and water permeable when necessary, making it extremely suitable for so-called tea bags such as black tea. You can get something.
すなわち、所定量の紅茶等を封入しておけば、保管中変
質するおそれはなく、必要に応じそのまま熱湯中に入れ
れば袋は透孔が生ずるので、簡単に紅茶などが浸出され
る。That is, if a predetermined amount of black tea or the like is sealed in the bag, there is no risk of deterioration during storage, and if necessary, if the bag is placed directly into hot water, holes will be formed in the bag so that the black tea or the like can be easily leached out.
実施例 １
糸の巾（断面直径） ０．５ ｔｎｒｎ、網目の大きさ
ｌｍｍＸ１ｍｍ、厚さＬｍｍの溶解押出法によるポリエ
チレン網（融点１１５°Ｃガラス転移点−３０℃）を１
０５℃に加熱しながら１００ ｋｇ／ｃｔｙｔでプレス
して網目を閉塞してフィルム状にした。Example 1 A polyethylene network (melting point: 115°C; glass transition point: -30°C) made by melt extrusion method with thread width (cross-sectional diameter) of 0.5 tnrn, mesh size of 1 mm x 1 mm, and thickness of 1 mm was
It was heated to 05°C and pressed at 100 kg/ctyt to close the mesh and form a film.
このフィルム上に１１０℃に加熱された熱ペンで記録し
たところ記録部分に透孔が生じた。When this film was recorded with a hot pen heated to 110° C., holes were formed in the recorded area.
このフィルムを使って謄写インクで常法により印刷した
ところ非常に鮮明な印刷物を得た。When this film was used to print using mimeograph ink in a conventional manner, very clear prints were obtained.
実施例 ２
糸の巾（断面直径）が０．１ ｍｍ、網目の大きさが０
、５ ｍｍＸ Ｏ，５ｍｒＩＬ、厚さ１ｍｍのポリ塩化
ビニル（融点約２００℃、ガラス転移点７０℃）製網を
８０℃のニップロールで４０ ｋｇ／ｃ４で加圧しフィ
ルム状にした。Example 2 Thread width (cross-sectional diameter) is 0.1 mm, mesh size is 0
A polyvinyl chloride (melting point: about 200° C., glass transition point: 70° C.) net made of polyvinyl chloride (melting point: about 200° C., glass transition point: 70° C.), 5 mm×O, 5 mrIL, and 1 mm thick was pressed at 40 kg/c4 with nip rolls at 80° C. to form a film.
次いでこのフィルムに原稿（印刷物）を重ね理想科学工
業株式会社製放電閃光照射装置ＴＵ−２５０（推定温度
７５〜１２０℃）で露光した。Next, a manuscript (printed material) was placed on this film and exposed using a discharge flash irradiation device TU-250 manufactured by Riso Kagaku Kogyo Co., Ltd. (estimated temperature: 75 to 120°C).
このフィルムを原版として謄写用インクで印刷したとこ
ろ原稿に忠実な鮮明な印刷物が得られた。When this film was used as an original plate and printed with mimeograph ink, clear prints faithful to the original were obtained.
実施例 ３
ガラス転移点が一２５℃である厚さ１００μの架橋ポリ
エチレンフィルムに０．５ｍｍの径の針で無数の表面か
ら裏面へ貫通する孔を穿設し、これを１３０℃のニップ
ロールにより１００ ｋｇ／ｃｍで加圧し細孔を閉塞し
た。Example 3 A cross-linked polyethylene film with a thickness of 100 μm and a glass transition point of -25° C. was made with numerous holes penetrating from the front surface to the back surface using a needle with a diameter of 0.5 mm. The pores were closed by applying pressure at kg/cm.
このフィルムに原稿を重ね、３Ｍ社製モデル２８８露光
機で露光した（推定温度９０〜１５０°Ｃ）。The original was placed on top of this film and exposed using a 3M Model 288 exposure machine (estimated temperature 90-150°C).
このフィルムを謄写用インクを用いて印刷したところ鮮
明な印刷物を得た。When this film was printed using mimeograph ink, clear prints were obtained.
実施例 ４
ポリエチレンテレフタレート（融点２６５℃、ガラス転
移点８１°Ｃ）の厚さ３００μの不織布を２００℃、２
８０ ｋｇ／ｃｒｔｔでプレスし、空隙を閉塞してフィ
ルム状とした。Example 4 A 300μ thick nonwoven fabric of polyethylene terephthalate (melting point 265°C, glass transition point 81°C) was heated at 200°C for 2 hours.
It was pressed at 80 kg/crtt to close the voids and form a film.
このフィルム上に信号で文字等に変調されたレーザ光線
を照射（推定温度２１５°Ｃ）Ｌ、これを原版として謄
写インクで印刷したところ鮮明な印刷物を得た。This film was irradiated with a laser beam modulated into characters with signals (estimated temperature: 215°C), and this was used as an original to print with mimeograph ink, resulting in clear printed matter.
実施例 ５
ポリエチレンテレフタレート（融点２６５℃、ガラス転
移点８１℃）の繊維よりなる厚さ３００μの不織布を２
００℃、２８０ ｋｇ／ｃ４で加圧プレスし繊維間の空
隙が閉塞されたフィルム状物とした。Example 5 A nonwoven fabric with a thickness of 300μ made of fibers of polyethylene terephthalate (melting point 265°C, glass transition point 81°C) was
It was pressed at 00°C and 280 kg/c4 to form a film-like product in which the voids between the fibers were closed.
このフィルム状物で袋を作り水を入れたところ何等漏出
が認められなかった。When a bag was made from this film and filled with water, no leakage was observed.
この袋を２４０℃で１０秒間熱処理して再び水を入れた
ところ水は袋体を通過して流出した。When this bag was heat-treated at 240° C. for 10 seconds and water was added again, the water passed through the bag and flowed out.
Claims (1)
該貫通透孔を復元させる残留歪をもって閉塞されている
ことを特徴とする、熱可塑性樹脂よりなる熱透孔性プラ
スチックスシート状成形物。1. Sheet-like molding of thermoporous plastic made of thermoplastic resin, characterized in that a large number of through holes penetrating the front and back sides of a molded article are closed with residual strain that restores the through holes by heating. thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49036662A JPS5824454B2 (en) | 1974-04-02 | 1974-04-02 | Netsuto Kosei Plastics - Tojiyouseikebutsu |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49036662A JPS5824454B2 (en) | 1974-04-02 | 1974-04-02 | Netsuto Kosei Plastics - Tojiyouseikebutsu |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS50129656A JPS50129656A (en) | 1975-10-14 |
| JPS5824454B2 true JPS5824454B2 (en) | 1983-05-21 |
Family
ID=12476057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49036662A Expired JPS5824454B2 (en) | 1974-04-02 | 1974-04-02 | Netsuto Kosei Plastics - Tojiyouseikebutsu |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5824454B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60105860U (en) * | 1983-12-23 | 1985-07-19 | 本田技研工業株式会社 | Mounting structure of jet member in carburetor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0696629B2 (en) * | 1985-06-21 | 1994-11-30 | 三菱重工業株式会社 | Method for producing polyurethane elastomer |
| JPH01264829A (en) * | 1989-02-23 | 1989-10-23 | Mitsubishi Heavy Ind Ltd | Usage of high-molecular orientation elastomer molded body |
-
1974
- 1974-04-02 JP JP49036662A patent/JPS5824454B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60105860U (en) * | 1983-12-23 | 1985-07-19 | 本田技研工業株式会社 | Mounting structure of jet member in carburetor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS50129656A (en) | 1975-10-14 |
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