JPS62218100A - Method of cutting polyolefine foam - Google Patents
Method of cutting polyolefine foamInfo
- Publication number
- JPS62218100A JPS62218100A JP6217786A JP6217786A JPS62218100A JP S62218100 A JPS62218100 A JP S62218100A JP 6217786 A JP6217786 A JP 6217786A JP 6217786 A JP6217786 A JP 6217786A JP S62218100 A JPS62218100 A JP S62218100A
- Authority
- JP
- Japan
- Prior art keywords
- foam
- cutting
- metal wire
- temperature
- cut
- 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 description 43
- 238000000034 method Methods 0.000 title claims description 17
- 229920000098 polyolefin Polymers 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、ポリオレフィン発泡体の切断方法に関し、さ
らに詳しくは切断面が滑らかで、特に肉厚の発泡体を曲
線状（切断跡が水平でない形状、例えば円筒状の母線に
あたる部分）に切断することが可能な切断方法に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cutting polyolefin foam, and more specifically, the present invention relates to a method for cutting polyolefin foam. It relates to a cutting method that can cut the parts corresponding to the above.
従来、発泡体を曲線状に切断する方法については種々の
方法が知られており、例えば糸状のパントン−で切る方
法あるｈに打抜刃型で打抜く方法などがある。Conventionally, various methods have been known for cutting foam into curved shapes, including a method of cutting with a thread-like Panton, a method of cutting with a punching blade, and the like.
しかしながら、糸状のパントン−で切断する方法は、切
断クズが発生する、切断面が円滑でない、厚い発泡体を
切断する場合は、パントン−が曲りやすく、切断しても
切断面が所望の形状になりにくい等の問題がある。さら
に打抜型で打抜く方法は、厚い発泡体のものは、打抜い
ても圧縮して打抜くため、切断面が所望の形状になりに
くい、また大型発泡体の打抜きは刃型が高価になる、大
型プレスが必要になる等の設備上の問題もある。However, the method of cutting with a thread-like Pantone produces cutting debris, the cut surface is not smooth, and when cutting thick foam, the Pantone tends to bend, and the cut surface does not maintain the desired shape even after cutting. There are problems such as difficulty in becoming Furthermore, when punching with a punching die, thick foam is compressed and punched, so it is difficult to obtain the desired shape on the cut surface, and the cutting die is expensive when punching large foam. There are also equipment problems such as the need for a large press.
本発明は、かかる従来の問題を解決することを目的にし
、ポリオレフィン発泡体が熱に溶融しやすいこと及び発
泡体が燃焼しやすいことの両方の性質を有していること
に着目してなされたものである。The present invention was made with the aim of solving such conventional problems, focusing on the fact that polyolefin foam has both the properties of being easily melted by heat and being easily combustible. It is something.
すなわち本発明は、ポリオレフィン発泡体を４００〜１
１００℃の温度を有する金属線にて、０．５〜２０■／
ｓｅｃの速度で強制的に切断することを特徴とするポ
リオレフィン発泡体の切断方法である。That is, the present invention uses a polyolefin foam of 400 to 1
With a metal wire having a temperature of 100℃, 0.5~20cm/
This is a method for cutting a polyolefin foam, which is characterized by forcibly cutting the foam at a speed of 1.5 sec.
本発明の方法は、発泡体の表面が円滑になるばかりでな
く、切断クズもなしに、かなり肉厚の発泡体を安価な機
器で曲線状にも自在に切断を可能にしたものである。The method of the present invention not only makes the surface of the foam smooth, but also makes it possible to freely cut fairly thick foam into curved shapes using inexpensive equipment without cutting waste.
本発明に適用される発泡体は、高密度や低密度のポリエ
チレン、ポリプロピレンあるいはこれら熱可塑性樹脂を
主体とする共重合体、たとえばエチレンプロピレン共重
合体、エチレン酢酸ビニル共重合体などの共重合体およ
びこれらの混合物を含み、さらに、これら熱可塑性樹脂
に合成ゴム、パラフィンないし異種熱可塑性樹脂および
可塑剤、顔料、難燃剤などの添加剤を混合したものであ
ってもよめ。！ａつ屯らのλ１■ｚ炙Ｘ＋〜で七にし４
−リ・・。The foam applied to the present invention is a high-density or low-density polyethylene, polypropylene, or a copolymer mainly composed of these thermoplastic resins, such as a copolymer such as an ethylene propylene copolymer or an ethylene vinyl acetate copolymer. and a mixture thereof, and may also be a mixture of these thermoplastic resins with synthetic rubber, paraffin or different thermoplastic resins, and additives such as plasticizers, pigments, and flame retardants. ! Atsuton et al.'s λ1■zroasted
-Li...
本発明の方法は、発泡倍率が、５〜１２０倍の発泡体に
適用される。５倍未満であると熱線により、溶融樹脂が
発生し熱線にへばり付いて、切断能力が著しく低下し、
やがては切断が不可能になる。逆に１２０倍を超えると
熱線の周辺の発泡体が収縮する等して熱変形が発生しや
すｈ０本発明で使用する金属線は、所望温度を有するも
のであれば特に限定はないが、電流で発熱するものが望
ましい。特にニッケルクローム系合金が好ましく、更に
好ましくはニッケル７０〜９０％クローム５〜２５％程
度のニッケルクローム系合金が望ましい。The method of the present invention is applied to foams having an expansion ratio of 5 to 120 times. If it is less than 5 times, molten resin will be generated by the hot wire and will stick to the hot wire, significantly reducing the cutting ability.
Eventually, cutting becomes impossible. On the other hand, if the temperature exceeds 120 times, thermal deformation is likely to occur due to contraction of the foam around the hot wire h0 The metal wire used in the present invention is not particularly limited as long as it has a desired temperature; It is desirable to have one that generates heat. Particularly preferred is a nickel-chromium alloy, more preferably a nickel-chromium alloy containing about 70 to 90% nickel and 5 to 25% chromium.
本発明での重要な要件は、金属線の温度、切断速度およ
び金属線の直径（太さ）である。これらを最適な複合条
件下にして切断を実施することによって、発泡体を溶融
するだけでもなく、焼切るだけでもない微妙な複合現象
によって切断することを発明したものである。この条件
を設定することにより、発泡体の切断部の溶融樹脂が金
属線にベト付く現象がない程度に高温であり、また溶融
樹脂や発泡体が炎を出して燃焼するには至らない程度の
温度を設定することができるのである。Important requirements in the present invention are the temperature of the metal wire, the cutting speed, and the diameter (thickness) of the metal wire. By carrying out cutting under optimal composite conditions, the foam is cut by a delicate composite phenomenon that not only melts the foam but also burns it out. By setting these conditions, the temperature is high enough that the molten resin at the cut part of the foam does not stick to the metal wire, and the temperature is high enough that the molten resin and foam do not emit flames and burn. You can set the temperature.
本発明の方法で、金属線の温度を４００〜１１００℃が
好ましいとしたのは、４００℃未満であると、発泡体切
断中に金属線自身が発泡体の抵抗で切れやすくなったり
、溶融した発泡体の劣化物が発泡体に付着し、切断面が
円滑でなくなった抄、さらに、厚い発泡体では切断面が
曲がりくねって所望の形状になりにくくなるからである
。In the method of the present invention, the temperature of the metal wire is preferably 400 to 1100°C, because if the temperature is less than 400°C, the metal wire itself may easily break due to the resistance of the foam or may melt. This is because deterioration of the foam adheres to the foam and the cut surface is no longer smooth, and in the case of thick foam, the cut surface becomes curved and difficult to form into the desired shape.
また１１００℃を超えると、発泡体が炎をだして燃焼を
始めたり、金属線の周囲の発泡体の寸法を不規則にした
りする。Moreover, if the temperature exceeds 1100° C., the foam may emit flames and begin to burn, or the dimensions of the foam around the metal wire may become irregular.
さらに好ましい温度範囲は、５００〜９５０℃である。A more preferable temperature range is 500 to 950°C.
ここで、金属線の温度とは金属線が発泡体と接し、切断
している状輻の温度をいう。したがって、発泡体と接し
ている部位によって温度が異るが、通常発泡体に進入て
いる中心部が最も低温であり、露出している部分が最も
高温である。Here, the temperature of the metal wire refers to the temperature at which the metal wire is in contact with and cutting the foam. Therefore, although the temperature differs depending on the part that is in contact with the foam, the center part that has entered the foam is usually the lowest temperature, and the exposed part is the highest temperature.
本発明の方法で、切断速度を０．５〜２０ ｍ／ｓｅｅ
の速度で強制的に切断しなければならないのは、０ 、
５ ｔｍ ／ ｓｅｅ以下では発泡体が炎を出して燃え
やすくなり、２０ ｍ／ ｓｅｃ以上では金属線が切れ
やすくなった９特に金属線の切断速度が不規則に変化し
切断面が円滑になりにくくなるからである。With the method of the present invention, the cutting speed is 0.5 to 20 m/see.
It is necessary to forcefully disconnect at a speed of 0,
Below 5 tm/see, the foam will emit flames and become flammable, and above 20 m/sec, the metal wire will easily break.9 In particular, the cutting speed of the metal wire will vary irregularly, making it difficult to make the cut surface smooth. Because it will be.
さらに好ましい切断速度は１〜１５ ｔｍ ／ ｓｅｅ
である。More preferred cutting speed is 1-15 tm/see
It is.
金属線の直径が０．２〜１．６頷が好ましいのは、０．
２目以下であると金属線が発泡体により、曲ったり、酸
化劣化がおこりやすく切断しやすくなるからである。１
．６目以上では、発泡体の切断面が円滑になりにくい、
切断寸法精度ができにくい、発泡体との接触で大きな張
力を受は切断しやすい、電流が大きく経済的でない等の
問題が発生する。The diameter of the metal wire is preferably 0.2 to 1.6 mm.
This is because if it is less than 2 stitches, the metal wire is likely to be bent or deteriorated by oxidation due to the foam, making it easy to cut. 1
．． If the number of stitches is 6 or more, the cut surface of the foam will not be smooth.
Problems arise such as it is difficult to achieve accurate cutting dimensions, it is easy to cut if it receives large tension due to contact with the foam, and it is not economical because the current is large.
特に好ましい金属線の直径は、０．４〜１．２ ｍであ
る。A particularly preferred diameter of the metal wire is 0.4 to 1.2 m.
強制的に切断するとしたのは、前記切断速度の範囲で規
則正しく切断させることにより、切断面が円滑で、しか
も所望寸法内で発泡体を切断することが可能となるから
である。The reason why the foam is forcibly cut is that by regularly cutting within the above-mentioned cutting speed range, it becomes possible to cut the foam with a smooth cut surface and within a desired dimension.
実施例１
比重０．９６３のポリエチレン樹脂を架橋発泡（３０倍
）させた発泡体（寸法 ３１０画×３１０副×３５−の
直方体）を直径３００ｍ高さ３５国の円柱に切断するた
め、直径０．８２ｍの金属線にッケル８０％、クローム
２０％のニッケル・クローム系合金）で、切断温度５０
０〜７２０℃（５００℃は母線の中間点、７２０℃は母
線の上下の点の各温度）、外周速度２．０ｗ／ｓｅｅで
強制的に切断したところ、１回転のみで切断面が円滑で
所望の形状である正円柱に切断できた。この場合の熱線
の長さは、６６ｃｒｎ（発泡体に接する長さは高さの分
３５ ｔｙｎ ）であり電流は１０．２アンペアであっ
た。Example 1 A foam made by cross-linking and foaming (30 times) polyethylene resin with a specific gravity of 0.963 (rectangular parallelepiped size: 310 squares x 310 squares x 35 squares) was cut into a cylinder with a diameter of 300 m and a height of 35 mm. .82m metal wire with 80% nickel and 20% chrome (nickel-chromium alloy), cutting temperature 50
When forcedly cut at 0 to 720℃ (500℃ is the temperature at the midpoint of the generatrix, 720℃ is the temperature at the top and bottom of the generatrix) and a peripheral speed of 2.0w/see, the cut surface was smooth with only one rotation. It was possible to cut into the desired shape of a regular cylinder. The length of the hot wire in this case was 66 crn (the length in contact with the foam was 35 tyn equal to the height), and the current was 10.2 amperes.
比較例１
実施例１の方法において、金属線の温度条件だけを、発
泡体に進入する中心部を約５００℃、端部を約１１５０
℃に変えて、同様に発泡体の切断を試みたが、発泡体が
炎をあげて燃焼し始めたので切断を中止した。Comparative Example 1 In the method of Example 1, only the temperature conditions of the metal wire were set to about 500°C at the center where it enters the foam and about 1150°C at the ends.
℃ and attempted to cut the foam in the same manner, but the foam began to catch fire and burn, so cutting was stopped.
比較例２
実施例１の方法において、切断速度だけを２２■／ ｓ
ｅｃに変えて、同様に発泡体の切断を試みたが、金属線
が切断したので、切断を中止した。Comparative Example 2 In the method of Example 1, only the cutting speed was changed to 22 / s.
I tried cutting the foam in the same way by changing to EC, but the metal wire broke, so I stopped cutting.
Claims (2)
度を有する金属線にて、０．５〜２０ｍｍ／ｓｅｃの速
度で強制的に切断することを特徴とするポリオレフィン
発泡体の切断方法(1) A method for cutting polyolefin foam, which comprises forcibly cutting the polyolefin foam at a speed of 0.5 to 20 mm/sec with a metal wire having a temperature of 400 to 1100°C.
０．２０〜１．６ｍｍである特許請求の範囲第１項記載
の方法(2) The method according to claim 1, wherein the metal wire is made of a nickel-chromium alloy and has a diameter of 0.20 to 1.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6217786A JPS62218100A (en) | 1986-03-20 | 1986-03-20 | Method of cutting polyolefine foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6217786A JPS62218100A (en) | 1986-03-20 | 1986-03-20 | Method of cutting polyolefine foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62218100A true JPS62218100A (en) | 1987-09-25 |
Family
ID=13192578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6217786A Pending JPS62218100A (en) | 1986-03-20 | 1986-03-20 | Method of cutting polyolefine foam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62218100A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002146935A (en) * | 2000-11-15 | 2002-05-22 | Kikkona Kk | Wall substrate structure and wall substrate built-up method |
| US11738492B2 (en) | 2016-03-31 | 2023-08-29 | Toray Plastics (America), Inc. | Methods of producing polyolefin foam sheets and articles made thereof |
-
1986
- 1986-03-20 JP JP6217786A patent/JPS62218100A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002146935A (en) * | 2000-11-15 | 2002-05-22 | Kikkona Kk | Wall substrate structure and wall substrate built-up method |
| US11738492B2 (en) | 2016-03-31 | 2023-08-29 | Toray Plastics (America), Inc. | Methods of producing polyolefin foam sheets and articles made thereof |
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