JPS5821690Y2 - Polyolefin resin plate-shaped molded product with destroyed air bubbles - Google Patents
Polyolefin resin plate-shaped molded product with destroyed air bubblesInfo
- Publication number
- JPS5821690Y2 JPS5821690Y2 JP6773077U JP6773077U JPS5821690Y2 JP S5821690 Y2 JPS5821690 Y2 JP S5821690Y2 JP 6773077 U JP6773077 U JP 6773077U JP 6773077 U JP6773077 U JP 6773077U JP S5821690 Y2 JPS5821690 Y2 JP S5821690Y2
- Authority
- JP
- Japan
- Prior art keywords
- polyolefin resin
- resin plate
- shaped molded
- destroyed
- bubbles
- 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
- Laminated Bodies (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
【考案の詳細な説明】
本考案は巨大気泡を有する発泡ポリオレフィン系樹脂板
状体の巨大気泡の大部分が破壊せられたポリオレフィン
系樹脂板状成形体に関するものである。[Detailed Description of the Invention] The present invention relates to a polyolefin resin plate-like molded article in which most of the giant cells of a foamed polyolefin resin plate-like article having giant cells have been destroyed.
一般に、ポリオレフィン系樹脂発泡シートは、その気泡
を微細化することによって柔軟性、白色度等の良好なシ
ートを得る研究がなされてきた。In general, research has been carried out on polyolefin resin foam sheets to obtain sheets with good flexibility, whiteness, etc. by making the cells finer.
本考案者は特殊な組成物を使用することによって、巨大
な気泡を有し、厚みの厚い発泡ポリオレフィン系樹脂板
状体が押出成形によって得られることを見出した。The present inventor discovered that by using a special composition, a thick foamed polyolefin resin plate having huge cells can be obtained by extrusion molding.
この巨大気泡を有する発泡ポリオレフィン系樹脂板状体
は内包されている空気によって、腰が強く、衝撃吸収性
がよく、各種の緩衝材、包装材等として利用し得ること
を見出した。It has been found that this foamed polyolefin resin plate having giant cells is strong and has good shock absorption properties due to the air contained therein, and can be used as various cushioning materials, packaging materials, etc.
しかし、更に、この発泡ポリオレフィン系樹脂板状体の
巨大気泡の大部分を破壊することによって特殊な性状を
有する成形体とすることができ、種々の用途に供し得る
ことを知見した。However, it has been further discovered that by destroying most of the giant cells in this foamed polyolefin resin plate, a molded article with special properties can be obtained, which can be used for various purposes.
本考案は、この知見に基づいてなされたものであって、
20ないし80倍の発泡倍率を有し、2mm以上IQm
m以下の気泡径を有するほぼ球状の独立気泡からなる巨
大気泡が発泡体の全体積の60%以上を占める3〜50
mmの厚みを有する発泡ポリオレフィン系樹脂板状体の
上下両面から線状の切れ目が穿設せられて巨大気泡の大
部分が破壊せられてなることを特徴とする気泡が破壊さ
れたポリオレフィン系樹脂板状成形体を要旨とするもの
である。The present invention was made based on this knowledge, and
It has a foaming ratio of 20 to 80 times and an IQm of 2 mm or more.
3 to 50 cells in which giant cells consisting of nearly spherical closed cells with a cell diameter of less than m account for 60% or more of the total volume of the foam.
A foamed polyolefin resin plate having a thickness of 1.0 mm, in which linear cuts are made from both the upper and lower surfaces of the foamed polyolefin resin plate to destroy most of the giant cells. The gist is a plate-shaped molded body.
本考案に使用されるポリオレフィン系樹脂はポリエチレ
ン、ポリプロピレン、ポリブテンまたはこれらの樹脂の
共重合体等を挙げることができる。Examples of the polyolefin resin used in the present invention include polyethylene, polypropylene, polybutene, and copolymers of these resins.
中でも低密度ポリエチレンが高発泡倍率を有する発泡板
状体とするのに好適である。Among them, low-density polyethylene is suitable for forming a foam plate-like body having a high expansion ratio.
本考案に使用されるポリオレフィン系樹脂発泡板状体は
3〜50mmの厚みを有する板状体であり、2mm以上
10mm以下の気泡径を有するほぼ球状の独立気泡から
なる巨大気泡が発泡板状体の全体積の60%以上を占め
ている。The polyolefin resin foam plate used in the present invention is a plate with a thickness of 3 to 50 mm, and the foam plate has giant cells consisting of nearly spherical closed cells with a cell diameter of 2 mm or more and 10 mm or less. It occupies more than 60% of the total volume.
各気泡はほぼ球状であるが気泡相互の接触する気泡膜は
多面体を形成している。Each bubble is approximately spherical, but the bubble membranes in which the bubbles are in contact with each other form a polyhedron.
而して巨大気泡によって囲まれた隅部には微細気泡が形
成せられているが全体の体積からみて巨大気泡が60%
以上を占める。Although fine bubbles are formed in the corners surrounded by giant bubbles, giant bubbles account for 60% of the total volume.
occupies more than
巨大気泡は気泡径の揃ったものが好適である。It is preferable that the giant bubbles have a uniform diameter.
本考案においては、上記巨大気泡を有する発泡ポリオレ
フィン系樹脂板状体の巨大気泡の大部分が破壊せられて
いる。In the present invention, most of the giant cells in the foamed polyolefin resin plate having giant cells are destroyed.
気泡を破壊するために、板状体の上下両面から線状の切
れ目が穿設せられる。In order to destroy air bubbles, linear cuts are made from both the upper and lower sides of the plate.
切れ目は直線状であっても断続線状(破線状)であって
もよい。The cut may be a straight line or an interrupted line (dashed line).
切れ目は発泡ポリオレフィン系樹脂板状体の切断を防止
するため、該板状体の厚みの±以下の深さに穿設するの
が好ましい。In order to prevent the foamed polyolefin resin plate from being cut, the cuts are preferably made at a depth of ± or less than the thickness of the plate.
而して板状体の上下両面から位置をずらして切れ目を設
けることが好適である。Therefore, it is preferable to provide the cuts at positions shifted from both the upper and lower surfaces of the plate-shaped body.
切れ目相互の間隔は巨大気泡の大きさによって適宜選択
せられ、巨大気泡の大部分が破壊される間隔で切れ目が
設けられる。The intervals between the cuts are appropriately selected depending on the size of the giant bubbles, and the cuts are provided at intervals such that most of the giant bubbles are destroyed.
例えば、巨大気泡の平均気泡径が5mmであれば、5m
mの間隔で切れ目を穿設することによって大部分の巨大
気泡が破壊せられる。For example, if the average bubble diameter of giant bubbles is 5 mm, 5 m
Most of the giant bubbles are destroyed by making cuts at intervals of m.
切れ目の穿設は、例えば回転刃を当接することによって
設けてもよく、また剪断刃を有する一対のドラムを回転
させながらその間隙に前記発泡ポリオレフィン系樹脂板
状体を通過せしめることによって容易に切れ目を設ける
ことができる。The cuts may be made, for example, by abutting a rotating blade, or the cuts can be easily made by passing the foamed polyolefin resin plate through the gap while rotating a pair of drums having shearing blades. can be provided.
図面について説明すれば、第1図は発泡ポリオレフィン
系樹脂板状体に切れ目を設けた状態を斜視図で模型的に
示す説明図であり、第2図は第1図A−A線端面図であ
る。To explain the drawings, Fig. 1 is an explanatory diagram schematically showing in a perspective view a state in which cuts are made in a foamed polyolefin resin plate, and Fig. 2 is an end view taken along the line A-A in Fig. 1. be.
図面において、1は本考案の、気泡が破壊されたポリオ
レフィン系樹脂板状成形体であり、例えば、ポリエチレ
ンを押出発泡せしめて得たはは球状の巨大気泡が発泡体
の全体積の60%以上を占める板状体に、その上下両面
から線状の切れ目を穿設したものである。In the drawings, reference numeral 1 indicates a polyolefin-based resin plate-shaped molded product of the present invention in which the cells have been destroyed. For example, the large spherical cells obtained by extrusion foaming polyethylene account for 60% or more of the total volume of the foam. This is a plate-shaped body that occupies a large area, with linear cuts cut from both the top and bottom sides.
2は巨大気泡であり、3は巨大気泡2に囲まれて存在す
る微細気泡である。2 is a giant bubble, and 3 is a fine bubble surrounded by the giant bubble 2.
4は切れ目であり、第1図における4′は切れ目4を作
るための切断線であり、ポリオレフィン系樹脂板状成形
体1には線状に表われないが理解を容易にするために模
型的に示した線である。4 is a cut, and 4' in FIG. 1 is a cutting line for making the cut 4. Although it does not appear linearly in the polyolefin resin plate-shaped molded product 1, it is shown in a model for ease of understanding. This is the line shown in .
切れ目4はポリオレフィン系樹脂板状成形体1の上面お
よび下面に等間隔に穿設せられており、かつ、上面の切
断線4′と下面の切断線4′とは位置をずらして設けら
れている。The cuts 4 are formed at equal intervals on the upper and lower surfaces of the polyolefin resin plate-shaped molded product 1, and the cutting lines 4' on the upper surface and the cutting lines 4' on the lower surface are provided at different positions. There is.
この切断線4′によって形成される切れ目4によって巨
大気泡2の大部分が、その気泡膜が剪断されて破壊され
る。The cut 4 formed by the cutting line 4' causes most of the giant bubble 2 to be destroyed by shearing its bubble membrane.
本考案の気泡が破壊されたポリオレフィン系樹脂板状成
形体1は、上記の如き構造よりなり、大部分の巨大気泡
2が破壊されて密閉された空気の層が極めて少いので、
柔軟性が極めて良好であり、連続気泡を有するポリウレ
タン発泡体の如く柔軟性に富み、剪断された気泡膜は弾
力性があり、元の状態に復元する性質がある。The bubble-destructed polyolefin resin plate-shaped molded article 1 of the present invention has the above-described structure, and most of the giant bubbles 2 are destroyed and there are very few sealed air layers.
It has very good flexibility, like a polyurethane foam with open cells, and the sheared cell membrane is elastic and has the property of returning to its original state.
また、巨大気泡2が破壊されて成形体の表面積が著しく
拡大されていて、水その他各種の物質を吸着する能力が
強い。Moreover, the surface area of the molded body is significantly expanded by destroying the giant bubbles 2, and the molded body has a strong ability to adsorb water and various other substances.
本考案の気泡が破壊されたポリオレフィン系樹脂板状成
形体1は、上記の通り、特有の性質を有しているので、
タオル、雑巾、束子等の清掃具として利用できる他、油
の吸着剤、或いは液体または気体の濾過材として使用す
ることができる。As mentioned above, the polyolefin resin plate-shaped molded article 1 of the present invention in which the bubbles are destroyed has unique properties.
In addition to being used as cleaning tools such as towels, rags, and bundles, it can also be used as an oil adsorbent or a liquid or gas filtration material.
その他、弾力性、緩衝性もよいのでガラス、陶磁器製品
の包装材としても有用である。Additionally, it has good elasticity and cushioning properties, making it useful as a packaging material for glass and ceramic products.
図面は、本考案の気泡が破壊されたポリオレフィン系樹
脂板状成形体を例示するものであって、第1図は模型的
に説明する斜視図である。
第2図は第1図A−A線端面図である。
図面中の主な符号は次の通りである。
1・・・・・・ポリオレフィン系樹脂板状成形体、2・
・・・・・巨大気泡、3・・・・・・微細気泡、4・・
・・・・切れ目、4′・・・・・・切断線。The drawings illustrate a polyolefin resin plate-shaped molded article in which bubbles are destroyed according to the present invention, and FIG. 1 is a perspective view schematically illustrating the same. FIG. 2 is an end view taken along the line A--A in FIG. 1. The main symbols in the drawings are as follows. 1...Polyolefin resin plate-shaped molded body, 2.
...Giant bubbles, 3...Micro bubbles, 4...
...cut, 4'...cutting line.
Claims (3)
lQmm以下の気泡径を有するほぼ球状の独立気泡から
なる巨大気泡が発泡体の全体積の60%以上を占める3
〜5Qmmの厚みを有する発泡ポリオレフィン系樹脂板
状体の上下両面から線状の切れ目が穿設せられて巨大気
泡の大部分が破壊せられてなることを特徴とする気泡が
破壊されたポリオレフィン系樹脂板状成形体。(1) Giant cells consisting of nearly spherical closed cells with an expansion ratio of 20 to 80 times and a cell diameter of 2 mm or more and 1Q mm or less occupy 60% or more of the total volume of the foam3
A foamed polyolefin resin plate having a thickness of ~5 Qmm, in which linear cuts are made from both the upper and lower surfaces to destroy most of the giant cells. Resin plate-shaped molded body.
板状体の厚みの約÷以下の深さに直線状または断続線状
に穿設せられたことを特徴とする実用新案登録請求の範
囲第1項記載の気泡が破壊されたポリオレフィン系樹脂
板状成形体。(2) Scope of utility model registration claims characterized in that the cuts are made in straight or interrupted lines from both the upper and lower surfaces at intervals of 2 to 10 mm at a depth of approximately ÷ the thickness of the plate-like body or less. 2. The polyolefin resin plate-shaped molded article in which bubbles are destroyed as described in item 1.
プロピレンである実用新案登録請求の範囲第1項記載の
気泡が破壊されたポリオレフィン系樹脂板状成形体。(3) The polyolefin resin plate-shaped molded article in which air bubbles have been destroyed, as set forth in claim 1, wherein the polyolefin resin is polyethylene or polypropylene.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6773077U JPS5821690Y2 (en) | 1977-05-25 | 1977-05-25 | Polyolefin resin plate-shaped molded product with destroyed air bubbles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6773077U JPS5821690Y2 (en) | 1977-05-25 | 1977-05-25 | Polyolefin resin plate-shaped molded product with destroyed air bubbles |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53162166U JPS53162166U (en) | 1978-12-19 |
JPS5821690Y2 true JPS5821690Y2 (en) | 1983-05-09 |
Family
ID=28974950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6773077U Expired JPS5821690Y2 (en) | 1977-05-25 | 1977-05-25 | Polyolefin resin plate-shaped molded product with destroyed air bubbles |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5821690Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995020622A1 (en) * | 1994-01-31 | 1995-08-03 | Asahi Kasei Kogyo Kabushiki Kaisha | Extruded propylene polymer resin foam |
-
1977
- 1977-05-25 JP JP6773077U patent/JPS5821690Y2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995020622A1 (en) * | 1994-01-31 | 1995-08-03 | Asahi Kasei Kogyo Kabushiki Kaisha | Extruded propylene polymer resin foam |
GB2298425A (en) * | 1994-01-31 | 1996-09-04 | Asahi Chemical Ind | Extruded propylene polymer resin foam |
GB2298425B (en) * | 1994-01-31 | 1997-10-08 | Asahi Chemical Ind | Extruded propylene polymer resin foam |
Also Published As
Publication number | Publication date |
---|---|
JPS53162166U (en) | 1978-12-19 |
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