JPS62220537A - Molding polyethylene resin composition - Google Patents
Molding polyethylene resin compositionInfo
- Publication number
- JPS62220537A JPS62220537A JP6300186A JP6300186A JPS62220537A JP S62220537 A JPS62220537 A JP S62220537A JP 6300186 A JP6300186 A JP 6300186A JP 6300186 A JP6300186 A JP 6300186A JP S62220537 A JPS62220537 A JP S62220537A
- Authority
- JP
- Japan
- Prior art keywords
- density
- resin composition
- molding
- parts
- polyethylene 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
- 238000000465 moulding Methods 0.000 title claims description 15
- 239000011342 resin composition Substances 0.000 title claims description 12
- 229920013716 polyethylene resin Polymers 0.000 title claims description 11
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 16
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 16
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 7
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 12
- 239000000203 mixture Substances 0.000 abstract description 7
- 229920001684 low density polyethylene Polymers 0.000 abstract description 6
- 239000004702 low-density polyethylene Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 229940099514 low-density polyethylene Drugs 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 5
- -1 Polyethylene Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 238000007666 vacuum forming Methods 0.000 description 3
- 239000012778 molding material Substances 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229920004889 linear high-density polyethylene Polymers 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、真空成形やプレス成形などの成形加工に供さ
れる成形用ポリエチレン樹脂組成物に関するものである
、
ぐ従来技術と問題点〉
一般に、真空成形やプレス成形などのプラスチック成形
加工に供される成形用材料としては、物理的、化学的、
電気的特性などにすぐれるポリエチレンフィルムもしく
はシートが汎用されている。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a polyethylene resin composition for molding that is subjected to molding processes such as vacuum forming and press forming. Molding materials used in plastic molding processes such as vacuum forming and press molding include physical, chemical,
Polyethylene films or sheets with excellent electrical properties are widely used.
しかしてポリエチレンフィルムもしくはシートは、成形
加工にあ・ける絞シの深さが３０〜４０脂程度であれば
成形時の問題は少なく比較的容易に成形が行なえるもの
であるが、絞りの深さが４００を超えたシ、又３０〜４
０ｗ程度であっても複雑な形状の成形が行なわれる場合
には、特にコーナー□部分においてフィルムもしくはシ
ートが極端に薄くなる結果成形時に破れたり、成形後の
取シ扱いに際しても破損し易いという問題がある。そこ
で、フィルムもしくはシートの厚みを厚くすることによ
って強度をもたせることが考えられるが、熱がかかりに
くくなるため成形加工が難しくなり、又上記問題点も完
全には解決できないものである。However, polyethylene films or sheets can be formed relatively easily if the depth of the drawing hole in the forming process is about 30 to 40 mm. Saga exceeds 400, again 30~4
When molding a complex shape even at around 0W, the film or sheet becomes extremely thin, especially at the corners, resulting in the problem of being easily torn during molding or easily damaged when handled after molding. There is. Therefore, it may be possible to increase the thickness of the film or sheet to increase its strength, but since heat is not easily applied to the film or sheet, molding becomes difficult, and the above-mentioned problems cannot be completely solved.
く問題点を解決するための手段〉
本発明者はかかる情況に鑑みて鋭意研究した結果、特定
配合のポリエチレン樹脂組成物が良好な成形性を示し、
同時に充分な耐衝撃性を具備するフィルムもしくはシー
トを提供しうろことを知見し、本発明を完成させる炉至
ったものである。しかしてその要旨とするところは、中
低工法直鎖型低密度ポリエチレン１５〜８５重量部と低
圧法高密度ポリエチレン８５〜１５重量部とを含む成形
用ポリエチレン樹脂組成物である。Means for Solving the Problems In view of the above circumstances, the present inventor has conducted extensive research and has found that a polyethylene resin composition with a specific formulation exhibits good moldability,
At the same time, it was discovered that it would be possible to provide a film or sheet with sufficient impact resistance, and this led to the development of a furnace that completed the present invention. The gist thereof is a polyethylene resin composition for molding containing 15 to 85 parts by weight of medium-low process linear low density polyethylene and 85 to 15 parts by weight of low pressure process high density polyethylene.
〈発明の構成及び作用〉
本発明のポリエチレン樹脂組成物は、中低工法直鎖型低
密度ポリエチレン（以下、ＬＬＤＰＩ という）及び低
圧法高密度ポリエチレン（以下、ＨＤＰＥという）を必
須の成分として含むものである。<Structure and operation of the invention> The polyethylene resin composition of the present invention contains medium-low process linear low density polyethylene (hereinafter referred to as LLDPI) and low pressure process high density polyethylene (hereinafter referred to as HDPE) as essential components. .
ＬＬＤＰＥは低密度（通常０．９１０〜０．９ ａ ｏ
Ｅｌ／ｃｔｔｔ ）で直鎖型の構造となっているもの
であり、好ましくはメルトインデックス（以下、ＭＩと
いう）が０．１〜５．０の範囲にあるものが選択される
。このＬＬＤＰＥはポリエチレン樹脂組成物に適度な柔
軟性を与えて良好な成形性を達成するものである。LLDPE has a low density (usually 0.910-0.9 ao
El/cttt), which has a linear structure, and preferably has a melt index (hereinafter referred to as MI) in the range of 0.1 to 5.0. This LLDPE imparts appropriate flexibility to the polyethylene resin composition and achieves good moldability.
他方ＨＤＰＥは直鎖型の高密度ポリエチレン（通常０．
９４５ ／ｊ／ｃ−以上）であり、ポリエチレン樹脂組
成物に耐衝撃性を付与するものである。しかして、ＬＬ
ＤＰＥとＨＤＰＥとは、１５〜８５：８５〜１５好まし
くは４０〜６０：６０〜４０（重量部）の範囲で配合シ
されることが重要である。ＬＬＤＰＩが１５重量部より
も少なくＨＤＰＥが８５重量部よシも多いと、適度に柔
軟性を荷する組成物が得られにくく成形加工上好ましく
ないものであシ、ＬＬＤＰＥが８５重ｆ！に部よシも多
くＨＤＰＥが１５重量部よりも少ないと、充分な耐衝撃
性が得られにくいので好ましくない。HDPE, on the other hand, is a linear high-density polyethylene (usually 0.
945/j/c- or higher), and imparts impact resistance to the polyethylene resin composition. However, LL
It is important that DPE and HDPE are mixed in a ratio of 15 to 85:85 to 15, preferably 40 to 60:60 to 40 (parts by weight). If LLDPI is less than 15 parts by weight and HDPE is more than 85 parts by weight, it will be difficult to obtain a composition with appropriate flexibility, which is undesirable in terms of molding process. If the amount of HDPE is less than 15 parts by weight, it is difficult to obtain sufficient impact resistance, which is not preferable.
本発明のポリエチレン樹脂組成物には必須成分であるＬ
ＬＤＰＥとＨＤＰＥの他、例えば高圧法分岐型低密度ポ
リエチレン（以下、ＬＤＰＫという）など公知のポリエ
チレンを配合してもよいものである。かかる０組成とす
る場合には、ＬＬＤＰＥとＨＤＰＥとが夫々２５重量部
以上の割合とされるよう、他のポリエチレンを５０重量
部以下の範囲で配合することが好ましい。L is an essential component in the polyethylene resin composition of the present invention.
In addition to LDPE and HDPE, known polyethylenes such as high-pressure branched low-density polyethylene (hereinafter referred to as LDPK) may be blended. In the case of such a zero composition, it is preferable to mix other polyethylenes in a range of 50 parts by weight or less so that the ratio of LLDPE and HDPE is 25 parts by weight or more.
尚、上記ポリエチレン樹脂組成物には、各種安定剤、難
燃剤、滑剤、補強剤などの充填剤や調加剤を配合しても
よいことは勿論である。It goes without saying that fillers and additives such as various stabilizers, flame retardants, lubricants, and reinforcing agents may be added to the polyethylene resin composition.
しかして、前記のポリエチレン樹脂組成物は、前述の如
＜ＬＬＤＰＥ及びＨＤＰＥを必須成分として配合され、
公知の手段にょシフィルムもしくはシート状に成形され
るが、２０％モジュラス（ａｔ２０℃）値に換算して１
．０〜２．０ｋｇ／−の範囲となるように設計されてい
ることが好ましいものである。２０％モジュラス（ａｔ
２０℃）値が１．０〜２．０ｋＩＩ／−の範囲内に設計
されていると、実用上すぐれた成形性を有することが、
本発明者の繰）返し行なった実験により判明している。Therefore, the above-mentioned polyethylene resin composition is blended with LLDPE and HDPE as essential components as described above,
It is formed into a film or sheet by known means, but it has a 20% modulus (at 20°C) value of 1.
．． It is preferable that the weight is designed to be in the range of 0 to 2.0 kg/-. 20% modulus (at
20°C) is designed within the range of 1.0 to 2.0 kII/-, it has practically excellent moldability.
This has been discovered through repeated experiments conducted by the inventor.
〈実施例〉
以下、本発明の実施例につき説明する。文中部とあるの
は重量部を意味するものとする。<Examples> Examples of the present invention will be described below. The term "part of the text" refers to the weight part.
実施例１〜５
ＬＬＤＰＩ（ＭＩ２．密度０．９２０）とＨＤＰＥ（Ｍ
ｌｌ、１．密度０，９５２ ）とを第１表にて示す部数
にて配合した混合物を、押出し機にて１ｎ厚のシート状
に押出して試料片（３５ｃＩｒＬＸ ４６Ｇｚ）を作成
した。Examples 1-5 LLDPI (MI2.density 0.920) and HDPE (M
ll, 1. A sample piece (35cIrLX 46Gz) was prepared by extruding a mixture having a density of 0.952) in the number of parts shown in Table 1 using an extruder into a 1n thick sheet.
得られた夫々の試料片を絞シ深さ６４ｆｉ、径が８５龍
の型にて真空成形を行ない（成形温度、１１０”Ｃ）、
シートのコーナ一部の最も薄い部分の厚み、シートの成
形性及び耐衝撃性をみた。モジュラス値についてはダン
ベル１号（＠ｊ、 １０１１ＩＫ）にて試験したもので
ある
第１表
成形性は、成形によるシートの損傷、細かい部分までに
成形可能か、厚みのバラツキがないかを目視で確認し、
○△×の三段階で評価した。○印はシートに損傷なくス
ムースに成形でき、細部まで略均−厚みであったことを
確認したものである。The obtained sample pieces were vacuum formed in a mold with a drawing depth of 64 fi and a diameter of 85 mm (forming temperature, 110"C),
The thickness of the thinnest corner part of the sheet, the formability and impact resistance of the sheet were examined. The modulus value was tested using dumbbell No. 1 (@j, 1011IK). Formability is determined by visual inspection to determine whether the sheet is damaged by forming, whether it is possible to form fine parts, and whether there are any variations in thickness. Confirmed,
Evaluation was made in three stages: ○△×. The mark ○ indicates that the sheet was molded smoothly without any damage, and it was confirmed that the thickness was approximately equal to the thickness in every detail.
Δ印はシートに損傷はみられなかったが、細部の成形が
やや難であグたシ、厚みにバラツキを有していたもので
ある。Ｘ印はシートに損傷がみとめられたものである。The sheets marked with Δ did not show any damage, but the molding of the details was a little difficult, and the sheets were rough and had variations in thickness. The X marks indicate damage to the sheet.
ａ）シートにシワが入り、厚みにもバラツキが認められ
た。a) The sheet had wrinkles and variations in thickness were observed.
ｂ）細かい部分の成形がやや難であった。b) It was somewhat difficult to mold small parts.
耐衝撃性は、ＡＳＴＭＧ−１４に規定する試験装置によ
り次の要領で求めたものである。規定の荷重（９６０，
９）をおおよその高さから落下させ、パイプに被覆され
ている各試料片にピンホールが発生するか否かの判定を
ピンホールテスターを用いて（約１５０００Ｖの電圧で
電流を流して）行う。ピンホールが発生しなければ高さ
を上げ、ピンホールが発生すれば高さを下げる。この繰
シ返しを１α単位で行なって、ピンホールが発生した最
低の高さを同一高さで４〜５回の試験を行なって判定し
た。第１表に示された数値は、この値を〔睦−ｍ〕の単
位（ｌｋｌ？の荷重ｔ−１ｍの高さから落下させた場合
１ ｋｇ −ｍ ）に換算して求めたものである。The impact resistance was determined in the following manner using a test device specified in ASTM G-14. Specified load (960,
9) is dropped from the approximate height, and a pinhole tester is used to determine whether pinholes are generated in each sample piece coated on the pipe (by passing a current at a voltage of approximately 15,000 V). . If no pinholes occur, increase the height; if pinholes occur, lower the height. This process was repeated in units of 1α, and the lowest height at which a pinhole occurred was determined by performing the test 4 to 5 times at the same height. The numerical values shown in Table 1 were obtained by converting these values into the unit of [Mutsu-m] (1 kg-m when dropped from a height of 1 m with a load of 1 kg). .
く他の実施例〉
実施例６
次にＬＬＤＰＩ（ＭＩ２．０．密度０．９２）を４０部
、ＨＤＰＥ（Ｍｌｌ、１．密度０．９５）を３０部及び
ＬＤＰＥ（ＭＩｏ、９．密度０．９２）を３０部の割合
にて配合した混合物を押出し機にて１關霞厚のシート状
に押出して、前記実施例同様の試料片を作成した。前記
同様の条件にて真空成形を行なうと共に各項目につき同
様に試験を行なった。比較例として、上１己のＨＤＰＥ
３０部どＬＤＰＥ７０部とを配合した混合物にて試験を
行なった。それらの結果につき第２表に示す。Other Examples Example 6 Next, 40 parts of LLDPI (MI2.0.density 0.92), 30 parts of HDPE (Mll, 1.density 0.95) and LDPE (MIo, 9.density 0.95) were added. A mixture containing 30 parts of 92) was extruded using an extruder into a sheet having a thickness of 1 inch to prepare a sample piece similar to that in the above example. Vacuum forming was carried out under the same conditions as above, and each item was tested in the same manner. As a comparative example, the first HDPE
A test was conducted using a mixture of 30 parts of LDPE and 70 parts of LDPE. The results are shown in Table 2.
Ｃ）厚みにバラツキが生じ薄い部分が残る。C) Thickness varies and thin portions remain.
〈発明の効果〉
上記第１表及び第２表の結果からも明らかな通り、本発
明の成形用＆ ＩＪエチレン樹脂組成物を用いてなるフ
ィルムもしくはシートは、絞シの深さが相当程度の成形
加工においてもコーナ一部の厚みが極端に薄くならず、
成形性が良好であり、しかも充分な耐衝撃性を具備して
いる。<Effects of the Invention> As is clear from the results in Tables 1 and 2 above, the film or sheet made using the molding & IJ ethylene resin composition of the present invention has a considerable drawing depth. Even during the forming process, the thickness of some corners does not become extremely thin.
It has good moldability and sufficient impact resistance.
従って、本発明は深絞シの成形や複雑な形状の成形でも
細部まで成形し易く、実用性の高い成形用材料を提供す
るものであシ、例えば、土中に埋設され段差の激しい横
管接続部を包むように装着する防食成形カバーなどの基
材として好適なフィルムもしくはシートを特徴するTherefore, the present invention provides a highly practical molding material that is easy to form in detail even in deep drawing molding or molding of complex shapes. Features a film or sheet that is suitable as a base material for anti-corrosion molded covers that are attached to wrap the connection parts.
Claims (1)
部と低圧法高密度ポリエチレン８５〜１５重量部とを含
む成形用ポリエチレン樹脂組成物。1) A molding polyethylene resin composition containing 15 to 85 parts by weight of medium-low-pressure linear low-density polyethylene and 85 to 15 parts by weight of low-pressure high-density polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6300186A JPS62220537A (en) | 1986-03-20 | 1986-03-20 | Molding polyethylene resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6300186A JPS62220537A (en) | 1986-03-20 | 1986-03-20 | Molding polyethylene resin composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62220537A true JPS62220537A (en) | 1987-09-28 |
Family
ID=13216646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6300186A Pending JPS62220537A (en) | 1986-03-20 | 1986-03-20 | Molding polyethylene resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62220537A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03115341A (en) * | 1989-09-28 | 1991-05-16 | Toppan Printing Co Ltd | Blow molded container |
| CN104277312A (en) * | 2013-07-04 | 2015-01-14 | 东港市远东节水灌溉设备有限公司 | Modified polyethylene pipe and making method thereof |
| JP2018168228A (en) * | 2017-03-29 | 2018-11-01 | 株式会社プライムポリマー | Silane-crosslinked polyethylene tube |
| CN110172259A (en) * | 2019-04-12 | 2019-08-27 | 熊雪根 | A kind of pressing color-changing pipe manufacture craft |
-
1986
- 1986-03-20 JP JP6300186A patent/JPS62220537A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03115341A (en) * | 1989-09-28 | 1991-05-16 | Toppan Printing Co Ltd | Blow molded container |
| CN104277312A (en) * | 2013-07-04 | 2015-01-14 | 东港市远东节水灌溉设备有限公司 | Modified polyethylene pipe and making method thereof |
| JP2018168228A (en) * | 2017-03-29 | 2018-11-01 | 株式会社プライムポリマー | Silane-crosslinked polyethylene tube |
| CN110172259A (en) * | 2019-04-12 | 2019-08-27 | 熊雪根 | A kind of pressing color-changing pipe manufacture craft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1406954B1 (en) | Pvc food wrap containing dioctyl terephthalate plasticizer, method of forming same and method of wrapping food therewith | |
| CA1340356C (en) | Polyethylene resin composition and film thereof | |
| CA1064639A (en) | Ethylene polymer films of reduced haze | |
| US6420470B1 (en) | Flame retardant films | |
| IL138733A0 (en) | High density polyethylene compositions, a process for the production thereof and films prepared thereof | |
| DE2263361A1 (en) | PLASTICS / RESINS | |
| US7588820B2 (en) | Nano-particle corrosion inhibiting films | |
| JPS62220537A (en) | Molding polyethylene resin composition | |
| DE3233693C2 (en) | Oriented composite film and its use | |
| US5064893A (en) | Flexible label film from polyethylene and calcium carbonate-polymer mixture | |
| DE102020216559A1 (en) | THIN FILM FOR WASTE PACKAGING CASSETTES | |
| CN111961271A (en) | Anti-puncture PE (polyethylene) winding film and preparation method thereof | |
| JPS62233248A (en) | Biaxial-oriented double layer film | |
| EP0404368A2 (en) | Blends of linear low density polyethylene and low density polyethylene and films for shrink-wrapping therefrom | |
| JPS6341945B2 (en) | ||
| EP3932668A1 (en) | Packaging film, film bag, and method for manufacturing same | |
| WO2001036520A1 (en) | Polyolefin films suitable for institutional applications | |
| JP4599645B2 (en) | Ethylene resin composition and film comprising the same | |
| JPS6119644A (en) | Linear, low-density polyethylene resin composition | |
| US5352498A (en) | Package for compounding rubber and compounded rubber | |
| KR20200094579A (en) | Packaging sheet having excellent sealing property | |
| JP2684723B2 (en) | Multilayer shrink film | |
| JP3795133B2 (en) | Hydrocarbon resin film with excellent antifogging properties | |
| KR100314827B1 (en) | Oxygen barrier resin composition and product containing the same | |
| JPS5923884A (en) | Rust preventive resin composition |