JP2000053785A - Sheet for civil engineering works - Google Patents

Sheet for civil engineering works

Info

Publication number
JP2000053785A
JP2000053785A JP10234905A JP23490598A JP2000053785A JP 2000053785 A JP2000053785 A JP 2000053785A JP 10234905 A JP10234905 A JP 10234905A JP 23490598 A JP23490598 A JP 23490598A JP 2000053785 A JP2000053785 A JP 2000053785A
Authority
JP
Japan
Prior art keywords
sheet
civil engineering
polyethylene
density
weight
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.)
Granted
Application number
JP10234905A
Other languages
Japanese (ja)
Other versions
JP4063413B2 (en
Inventor
Naoto Watabe
直人 渡部
Yukiaki Yoshioka
至明 吉岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CI Kasei Co Ltd
Original Assignee
CI Kasei Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CI Kasei Co Ltd filed Critical CI Kasei Co Ltd
Priority to JP23490598A priority Critical patent/JP4063413B2/en
Publication of JP2000053785A publication Critical patent/JP2000053785A/en
Application granted granted Critical
Publication of JP4063413B2 publication Critical patent/JP4063413B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Revetment (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain a sheet for civil engineering works with excellent tensile strength, tensile elongation, and workability such as welding processability at sites therefor. SOLUTION: This sheet for civil engineering works is made from (A) 50-90 wt.%; of a polyethylene-based resin with a density of 0.915-0.930 g/cm3 polymerized using a metallocene catalyst and (B) 10-50 wt.% of a 2nd polyethylene-based resin with a density of 0.875-0.91 g/cm3 polymerized using a metallocene catalyst.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、特定の密度を有す
るメタロセン触媒により重合されたポリエチレン系樹脂
を少なくとも2種類ブレンドすることにより、機械的強
度、現場での熱溶着加工等の施工性に優れた土木用シー
トに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is excellent in mechanical strength and workability such as on-site heat welding by blending at least two kinds of polyethylene resins polymerized with a metallocene catalyst having a specific density. Related to civil engineering sheets.

【0002】[0002]

【従来の技術】従来より、廃棄物処分場、溜池、埋め立
てなどの造成で、各種の合成樹脂製の防水シートが用い
られている。これらに使用されてきた土木用シートとし
ては、例えばゴム系、塩化ビニル系、高密度ポリエチレ
ン系、低密度ポリエチレン系などが用いられている。し
かし、ゴム系の土木用シートの場合、熱溶着性が悪いた
め接着剤を用いてシートを加工する必要が有る等の欠点
が有り、塩化ビニル系の土木用シートの場合、上記の欠
点はないが、可塑剤のブリードによる強度低下を招くお
それが有る等の欠点があり、また、高密度ポリエチレン
系の土木用シートの場合、機械的強度は優れるが、低温
での伸びが小さいことや施工性が悪いという欠点があ
り、さらに、低密度ポリエチレン系の土木用シートの場
合、軟質であるので常温での引張強さが低いと言う欠点
がある。
2. Description of the Related Art Conventionally, various synthetic resin waterproof sheets have been used in the construction of waste disposal sites, reservoirs, landfills, and the like. As the civil engineering sheets used for these, for example, rubber-based, vinyl chloride-based, high-density polyethylene-based, and low-density polyethylene-based sheets are used. However, in the case of a rubber-based civil engineering sheet, there are disadvantages such as the necessity of processing the sheet using an adhesive because of poor heat-welding properties, and in the case of a vinyl chloride-based civil engineering sheet, there is no such disadvantage. However, it has drawbacks such as the possibility of causing a decrease in strength due to the bleeding of the plasticizer.In the case of a high density polyethylene civil engineering sheet, the mechanical strength is excellent, but the low-temperature elongation is small and the workability is low. Further, in the case of a low-density polyethylene-based civil engineering sheet, the sheet is soft and has a low tensile strength at room temperature.

【0003】[0003]

【発明が解決しようとする課題】ポリエチレン系樹脂の
土木用シートにおいて、引張強さや伸びに優れ、現場で
の熱溶着等の施工性に優れた土木用シートを提供をする
ことを目的としている。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a sheet for civil engineering made of polyethylene resin, which is excellent in tensile strength and elongation and is excellent in workability such as heat welding on site.

【0004】[0004]

【課題を解決するための手段】本発明は、(A)密度が
0.915g/cm3 以上、0.930g/cm3 以下
のメタロセン触媒を用いて重合されたポリエチレン系樹
脂50〜90重量%と、(B)密度が0.875g/c
m3 以上、0.910g/cm3 以下のメタロセン触媒
を用いて重合されたポリエチレン系樹脂10〜50重量
%からなるポリエチレン系樹脂土木用シート、にある。
According to the present invention, there is provided (A) 50 to 90% by weight of a polyethylene resin polymerized by using a metallocene catalyst having a density of 0.915 g / cm3 or more and 0.930 g / cm3 or less; (B) The density is 0.875 g / c
a polyethylene-based resin civil engineering sheet comprising 10 to 50% by weight of a polyethylene-based resin polymerized using a metallocene catalyst having a m3 or more and 0.910 g / cm3 or less.

【0005】[0005]

【発明の実施の形態】以下、本発明を詳細に説明する。
本発明で使用される(A)および(B)のポリエチレン
系樹脂は、特開平3−163088号公報、特開平7−
118431号公報、特開平7−148895号公報等
に示されているような、メタロセン系遷移金属錯体と有
機アルミニウム化合物とからなる触媒で重合された樹脂
であり、エチレンと炭素数3〜12のα−オレフィンと
の共重合体である。このエチレンと共重合するα−オレ
フィンとしては、例えば、プロピレン、1−ブテン、1
−ペンテン、1−ヘキセン、1−ヘプテン、1−オクテ
ン、4−メチル−1−ペンテン、1−デセン等が挙げら
れ、その一種または二種以上の混合物が用いられる。
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The polyethylene resins (A) and (B) used in the present invention are disclosed in Japanese Patent Application Laid-Open Nos.
No. 118431, JP-A-7-148895, etc., a resin polymerized with a catalyst comprising a metallocene-based transition metal complex and an organoaluminum compound, and ethylene and α having 3 to 12 carbon atoms. -Copolymers with olefins. Examples of the α-olefin copolymerized with ethylene include propylene, 1-butene, and 1-butene.
-Pentene, 1-hexene, 1-heptene, 1-octene, 4-methyl-1-pentene, 1-decene and the like, and one or a mixture of two or more thereof is used.

【0006】エチレンに対するα−オレフィンの共重合
割合は、5〜40重量%とするのが好ましい。本発明で
使用されるメタロセン触媒を用いて重合したポリエチレ
ン系樹脂は、チーグラー触媒等の従来より使用されてい
るポリエチレン系樹脂に比べ、衝撃強度等の機械的強度
や熱溶着性等が優れている。
The copolymerization ratio of α-olefin to ethylene is preferably 5 to 40% by weight. The polyethylene resin polymerized using the metallocene catalyst used in the present invention is superior in mechanical strength such as impact strength, heat welding property, etc., as compared with conventionally used polyethylene resins such as Ziegler catalyst. .

【0007】(A)成分であるメタロセン触媒を用いて
重合されたポリエチレン系樹脂は、密度が0.915g
/cm3 以上、0.930g/cm3 以下、好ましく
は、0.920g/cm3 以上、0.930g/cm3
以下であり、メルトフローレート(MFR)が0.01
〜20g/10分、好ましくは0.05〜10g/10
分であり、分子量分布パラメーター(Mw/Mn)が
1.5〜5.0、好ましくは1.7〜4.5の範囲のも
のである。また、(B)成分であるメタロセン触媒を用
いて重合されたポリエチレン系樹脂は、密度が0.87
5g/cm3 以上、0.910g/cm3 以下、メルト
フローレート(MFR)が0.05〜30g/10分、
好ましくは0.1〜20g/10分、分子量分布パラメ
ーター(Mw/Mn)が1.5〜5.0、好ましくは
1.7〜4.5の範囲である。これらの(A)成分およ
び(B)成分の2種類のポリエチレン系樹脂をブレンド
することにより現場での熱溶着加工等の施工性、引張強
さ、引張伸び率に優れた土木用シートが得られる。
The polyethylene resin polymerized using the metallocene catalyst (A) has a density of 0.915 g.
/ Cm3 or more and 0.930 g / cm3 or less, preferably 0.920 g / cm3 or more and 0.930 g / cm3
And the melt flow rate (MFR) is 0.01
-20 g / 10 min, preferably 0.05-10 g / 10
And the molecular weight distribution parameter (Mw / Mn) is in the range of 1.5 to 5.0, preferably 1.7 to 4.5. The polyethylene resin polymerized by using the metallocene catalyst as the component (B) has a density of 0.87.
5 g / cm 3 or more and 0.910 g / cm 3 or less, a melt flow rate (MFR) of 0.05 to 30 g / 10 min,
Preferably, it is 0.1-20 g / 10 min, and the molecular weight distribution parameter (Mw / Mn) is in the range of 1.5-5.0, preferably 1.7-4.5. By blending these two types of polyethylene resins of the component (A) and the component (B), a civil engineering sheet excellent in workability such as heat welding on site, tensile strength, and tensile elongation can be obtained. .

【0008】上記の(A)成分のポリエチレン系樹脂の
密度が、0.915g/cm3 未満であると柔軟性が大
きく過ぎて施工性が悪くなり、0.930g/cm3 を
超えると固くなり、引張伸び率が悪くなる。さらに、配
合割合が50重量%未満であると柔軟性が大き過ぎて施
工性が悪化し、90重量%を超えると引張伸び率が低下
するという欠点が生じる。さらにまた、上記の(B)の
ポリエチレン系樹脂の密度が、0.875g/cm3 未
満であると引張強さの低下や、ベタツキなどによる施工
性が悪くなるという欠点があり、0.910g/cm3
以上であると固くなり、引張伸びが改善されない。
If the density of the polyethylene resin (A) is less than 0.915 g / cm 3, the flexibility is too large and the workability is deteriorated. The elongation rate becomes worse. Further, if the compounding ratio is less than 50% by weight, the flexibility is too large to deteriorate the workability, and if it exceeds 90% by weight, the tensile elongation decreases. Further, when the density of the polyethylene resin (B) is less than 0.875 g / cm3, there is a drawback that the tensile strength is reduced and the workability due to stickiness is deteriorated, and 0.910 g / cm3.
If it is more than the above, it becomes hard and the tensile elongation is not improved.

【0009】これらのポリエチレン系樹脂をブレンドし
て押出成形することにより土木用シートは得られるが、
このシート中にはその性能を損なわない範囲内で(A)
成分および(B)成分以外の高密度ポリエチレン、直鎖
状低密度ポリエチレン、高圧法ポリエチレンやポリプロ
ピレンなどの各種のポリオレフィン系樹脂や、天然ゴ
ム、合成ゴム、熱可塑性エラストマーなどの樹脂成分の
他、粘着付与剤、架橋剤、カーボンブラック、炭酸カル
シウム、タルク、シリカ、金属繊維、炭素繊維などの各
種フィラーや酸化防止剤、紫外線吸収剤、光安定剤、難
燃化剤、着色剤等を必要に応じて配合してもよい。
[0009] Civil engineering sheets can be obtained by blending and extruding these polyethylene resins.
(A) in this sheet, as long as its performance is not impaired.
In addition to component and component (B), various polyolefin resins such as high-density polyethylene, linear low-density polyethylene, high-pressure polyethylene and polypropylene, and resin components such as natural rubber, synthetic rubber, and thermoplastic elastomer, as well as adhesion Additives, cross-linking agents, various fillers such as carbon black, calcium carbonate, talc, silica, metal fibers and carbon fibers, antioxidants, ultraviolet absorbers, light stabilizers, flame retardants, coloring agents, etc. as required May be blended.

【0010】上記のシートは、ポリオレフィン系重合体
のシート製造に通常用いられる技術により製造すること
ができる。例えばシート状に成形する代表的な方法とし
ては、Tダイ押出法が挙げられる。得られたシートは、
前述の通り単層シートとして土木用シートに使用するこ
とができるが、他の材質の合成樹脂シートや不織布、織
布と組み合わせて2層以上の積層シートとして用いても
良い。このような多層シートは多層Tダイ押出法や貼り
合わせ法を用いることができる。本発明の土木用シート
の厚みは、通常0.5〜3mm、好ましくは1〜2mm
である。
The above-mentioned sheet can be produced by a technique usually used for producing a sheet of a polyolefin polymer. For example, a typical method of forming a sheet is a T-die extrusion method. The resulting sheet is
As described above, it can be used as a single-layer sheet for civil engineering sheets, but it may be used as a laminated sheet of two or more layers in combination with a synthetic resin sheet of another material, a nonwoven fabric, or a woven fabric. For such a multilayer sheet, a multilayer T-die extrusion method or a bonding method can be used. The thickness of the sheet for civil engineering of the present invention is usually 0.5 to 3 mm, preferably 1 to 2 mm.
It is.

【0011】本発明の土木用シートの柔軟性を示す曲げ
こわさは1000〜2000Kg/cm2 、好ましくは
1200〜1800Kg/cm2 のものが現場での展張
性や溶着加工時の作業性に好適である。更に、引張伸び
率が720%以上、好ましくは750%以上のものが、
土圧等の外圧に対しての破損が起こりにくい。また、製
造が容易で、粘着性がないのでロール状のシートの巻き
戻し作業性も良好で、各用途に使用可能な土木用シート
である。
The flexibility stiffness of the sheet for civil engineering of the present invention, which is 1000 to 2000 kg / cm 2, preferably 1200 to 1800 kg / cm 2, is suitable for the spreadability on site and the workability during welding. Further, those having a tensile elongation of 720% or more, preferably 750% or more,
Damage to external pressure such as earth pressure is unlikely to occur. Further, the sheet for civil engineering is easy to manufacture and has no stickiness, so that the workability of rewinding a roll-shaped sheet is good, and the sheet for civil engineering can be used for various purposes.

【0012】[0012]

【実施例】以下、本発明を実施例に基づいて説明する。 <シートの評価>DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. <Evaluation of sheet>

【0013】(1)引張強さについて 試験片は、製造されたシートをJIS K 7113に
規定されたダンベル2号形で打ち抜いたものを使用し
た。JIS K 6770に準拠し、引張試験機にて引
張速度200mm/分、試験片つかみ間距離80mmと
し、試験片の切断に至るまでの最大荷重を求め、次式に
より引張強さを算出した。 TB = FB /A だだし、TB : 引張強さ(単位、kgf/cm2 ) FB : 最大荷重(単位、kgf) A : 試験片の断面積(単位、cm2 ) 土木用シートの引張強さは、耐損傷性、耐圧性から大き
いほうが好ましく、少なくとも214kgf/cm2 以
上、好ましくは熱溶着部の強度低下を考慮し、306k
gf/cm2 以上とした。評価基準は、次のとおりであ
る。 ○ : 320kgf/cm2 以上 △ : 290kgf/cm2 以上、320kgf/c
m2 未満 × : 290kgf/cm2 未満
(1) Regarding Tensile Strength As a test piece, a manufactured sheet was punched out with a dumbbell No. 2 shape specified in JIS K 7113. In accordance with JIS K 6770, the maximum load up to the cutting of the test piece was determined using a tensile tester at a pulling speed of 200 mm / min and a distance between the test piece grips of 80 mm, and the tensile strength was calculated by the following equation. TB = FB / A where TB: tensile strength (unit: kgf / cm2) FB: maximum load (unit: kgf) A: cross-sectional area of test piece (unit: cm2) The tensile strength of the civil engineering sheet is as follows: From the viewpoint of damage resistance and pressure resistance, it is preferable that the resistance is large. At least 214 kgf / cm 2 or more, preferably 306 k
gf / cm2 or more. The evaluation criteria are as follows. ○: 320 kgf / cm 2 or more △: 290 kgf / cm 2 or more, 320 kgf / c
Less than m2 ×: Less than 290 kgf / cm2

【0014】(2)引張伸び率について 上記の引張強さの試験において、試験片の切断に至るま
での標線距離を測定し、次式により引張伸び率を算出し
た。 EB ={(L1 −L0 )/L0 }×100 EB : 引張伸び率(単位、%) L0 : 標線距離(25mm) L1 : 切断時の標線距離(単位、mm) 土木用シートの引張伸びは、耐圧性、下地表面へのつ追
従性から大きいほうが好ましく、720%以上、好まし
くは750%以上とした。評価基準は、次のとおりであ
る。 ◎ : 780%以上 ○ : 750%以上、780%未満 △ : 720%以上、750%未満 × : 720%未満
(2) Tensile Elongation In the above-mentioned tensile strength test, the gauge line distance until the test piece was cut was measured, and the tensile elongation was calculated by the following equation. EB = {(L1−L0) / L0} × 100 EB: Tensile elongation (unit,%) L0: Marking line distance (25 mm) L1: Marking line distance at cutting (unit, mm) Tensile elongation of civil engineering sheet Is preferably larger from the viewpoint of the pressure resistance and the ability to follow the base surface, and is set to 720% or more, preferably 750% or more. The evaluation criteria are as follows. ◎: 780% or more ○: 750% or more and less than 780% Δ: 720% or more and less than 750% ×: less than 720%

【0015】(3)曲げこわさについて ASTM D 747に準拠し、オルゼン剛性を測定し
た。土木シートの曲げこわさは、シート敷設時の展張性
や現場での溶着加工時の作業性に関連し、適度の曲げこ
わさを有する土木用シートが好ましい。評価基準は、次
のとおりである。 ○ : 1000〜2000kgf/cm2 △ : 800kgf/cm2 〜1000kgf/cm
2 未満、又は2000kgf/cm2 超〜2500kg
f/cm2 × : 800kgf/cm2 未満、又は2500kg
f/cm2 超
(3) Regarding bending stiffness Olsen's rigidity was measured in accordance with ASTM D747. The bending stiffness of the civil engineering sheet is related to the extensibility at the time of laying the sheet and the workability at the time of welding on site, and a civil engineering sheet having a moderate bending stiffness is preferable. The evaluation criteria are as follows. : 1000 to 2000 kgf / cm2 △: 800 kgf / cm2 to 1000 kgf / cm
Less than 2 or more than 2000kgf / cm2-2500kg
f / cm 2 ×: less than 800 kgf / cm 2 or 2500 kg
f / cm2

【0016】(4)巻き戻し作業性について Tダイ押出により製造された厚さ1.5mm、幅257
0mm、長さ50mの土木用シートをロール状に巻き取
り、倉庫にて1か月保管後、巻き戻し作業性について評
価した。評価基準は、次のとおりである。 ○ : 問題なく巻き戻し作業ができた。 △ : 多少のベタツキがあり、作業性に劣る。 × : ベタツキがひどく、巻き戻し作業が困難。
(4) Unwinding workability A thickness of 1.5 mm and a width of 257 manufactured by T-die extrusion
A civil engineering sheet having a length of 0 mm and a length of 50 m was wound up in a roll form, stored in a warehouse for one month, and evaluated for rewinding workability. The evaluation criteria are as follows. :: Rewinding work was performed without any problem. Δ: Some stickiness was observed and workability was poor. ×: Severe stickiness, making rewinding difficult.

【0017】〔実施例1〕(A)成分のメタロセン系触
媒を用いて製造されたポリエチレン系樹脂(三井化学社
製、商品名:エボリューSP−2520、密度:0.9
28g/cm3 、コモノマー:1−ヘキセン、MFR:
1.7g/10分)85重量部と、(B)成分のメタロ
セン系触媒を用いて製造されたポリエチレン系樹脂(ダ
ウケミカル社製、商品名:アフィニティHM−110
0、密度:0.880g/cm3 、コモノマー:1−オ
クテン、MFR:18.0g/10分)15重量部から
なる樹脂成分に、カーボンブラック2.5重量部、抗酸
化剤、ヒンダードアミン系光安定剤を適量配合し、11
5mmφのTダイ押出機を用いて、厚み1.5mm、幅
2570mm、長さ50mの土木用シートを巻き取っ
た。得られた土木用シートの評価は、表−1に示す。
Example 1 A polyethylene resin (trade name: Evolue SP-2520, manufactured by Mitsui Chemicals, Inc., density: 0.9) produced using a metallocene catalyst as the component (A)
28 g / cm3, comonomer: 1-hexene, MFR:
(1.7 g / 10 minutes) 85 parts by weight and a polyethylene resin (manufactured by Dow Chemical Company, trade name: Affinity HM-110) produced using the metallocene catalyst of the component (B)
0, density: 0.880 g / cm3, comonomer: 1-octene, MFR: 18.0 g / 10 min) resin component consisting of 15 parts by weight, 2.5 parts by weight of carbon black, antioxidant, hindered amine light-stable Mix the appropriate amount of
Using a 5 mmφ T-die extruder, a civil engineering sheet having a thickness of 1.5 mm, a width of 2570 mm and a length of 50 m was wound up. The evaluation of the obtained civil engineering sheet is shown in Table 1.

【0018】〔実施例2〕実施例1において、(A)成
分のポリエチレン系樹脂(三井化学社製、商品名:エボ
リューSP−2520、密度:0.928g/cm3 、
コモノマー:1−ヘキセン、MFR:1.7g/10
分)を70重量部と、(B)成分のポリエチレン系樹脂
(ダウ・ケミカル社製、商品名:アフィニティHM−1
100、密度:0.880g/cm3 、コモノマー:1
−オクテン、MFR:18.0g/10分)を30重量
部とした以外は、実施例1と同様にして土木用シートを
製造した。得られた土木用シートの評価は、表−1に示
す。
Example 2 In Example 1, a polyethylene resin (A) (trade name: Evolue SP-2520, manufactured by Mitsui Chemicals, Inc., density: 0.928 g / cm 3)
Comonomer: 1-hexene, MFR: 1.7 g / 10
Parts) and a polyethylene resin (B) component (manufactured by Dow Chemical Company, trade name: Affinity HM-1)
100, density: 0.880 g / cm3, comonomer: 1
-Octene, MFR: 18.0 g / 10 min), and a civil engineering sheet was produced in the same manner as in Example 1 except that 30 parts by weight was used. The evaluation of the obtained civil engineering sheet is shown in Table 1.

【0019】〔実施例3〕実施例1において、(A)成
分のポリエチレン系樹脂を55重量部、(B)成分のポ
リエチレン系樹脂を45重量部とした以外は、実施例1
と同様にして土木用シートを製造した。得られた土木用
シートの評価は、表−1に示す。
Example 3 Example 1 was repeated except that the polyethylene resin (A) was 55 parts by weight and the polyethylene resin (B) was 45 parts by weight.
A sheet for civil engineering was produced in the same manner as described above. The evaluation of the obtained civil engineering sheet is shown in Table 1.

【0020】〔実施例4〕実施例2において、(B)成
分をポリエチレン系樹脂(三井化学社製、商品名:エボ
リューP−SC−05100、密度:0.905g/c
m3 、コモノマー:1−ヘキセン、MFR:7.0g/
10分)に変更した以外は、実施例2と同様にして土木
用シートを製造した。得られた土木用シートの評価は、
表−1に示す。
Example 4 In Example 2, the component (B) was replaced with a polyethylene resin (trade name: Evolu P-SC-05100, manufactured by Mitsui Chemicals, Inc., density: 0.905 g / c).
m3, comonomer: 1-hexene, MFR: 7.0 g /
10 minutes), and a civil engineering sheet was produced in the same manner as in Example 2. Evaluation of the obtained civil engineering sheet
It is shown in Table 1.

【0021】〔実施例5〕実施例2において、(B)成
分をポリエチレン系樹脂(三井化学社製、商品名:エボ
リューP−SC−00100、密度:0.900g/c
m3 、コモノマー:1−ヘキセン、MFR:7.0g/
10分)に変更した以外は、実施例2と同様にして土木
用シートを製造した。得られた土木用シートの評価は、
表−1に示す。
Example 5 In Example 2, the component (B) was replaced with a polyethylene resin (trade name: Evolue P-SC-00100, manufactured by Mitsui Chemicals, Inc., density: 0.900 g / c).
m3, comonomer: 1-hexene, MFR: 7.0 g /
10 minutes), and a civil engineering sheet was produced in the same manner as in Example 2. Evaluation of the obtained civil engineering sheet
It is shown in Table 1.

【0022】〔実施例6〕実施例2において、(A)成
分をポリエチレン系樹脂(三井化学社製、商品名:エボ
リューSP−2020、密度:0.916g/cm3 、
コモノマー:1−ヘキセン、MFR:1.5g/10
分)に変更した以外は、実施例2と同様にして土木用シ
ートを製造した。得られた土木用シートの評価は、表−
1に示す。
Example 6 In Example 2, the component (A) was replaced with a polyethylene resin (trade name: Evolue SP-2020, manufactured by Mitsui Chemicals, Inc., density: 0.916 g / cm 3)
Comonomer: 1-hexene, MFR: 1.5 g / 10
Min), and a civil engineering sheet was manufactured in the same manner as in Example 2. The evaluation of the obtained civil engineering sheet is shown in Table-
It is shown in FIG.

【0023】〔実施例7〕(A)成分のポリエチレン系
樹脂(三井化学社製、商品名:エボリューSP−202
0、密度:0.916g/cm3 、コモノマー:1−ヘ
キセン、MFR:1.5g/10分)70重量部と、
(B)成分のポリエチレン系樹脂(三井化学社製、商品
名:エボリューP−SC−00100、密度:0.90
0g/cm3、コモノマー:1−ヘキセン、MFR:
7.0g/10分)30重量部とした以外は、実施例2
と同様にして土木用シートを製造した。得られた土木用
シートの評価は、表−1に示す。
Example 7 Polyethylene resin (A) (trade name: EVOLUE SP-202, manufactured by Mitsui Chemicals, Inc.)
0, density: 0.916 g / cm 3, comonomer: 1-hexene, MFR: 1.5 g / 10 min) 70 parts by weight;
Component (B) polyethylene resin (Mitsui Chemicals, trade name: Evolu P-SC-00100, density: 0.90
0 g / cm3, comonomer: 1-hexene, MFR:
7.0 g / 10 min) Example 2 except that 30 parts by weight was used.
A sheet for civil engineering was produced in the same manner as described above. The evaluation of the obtained civil engineering sheet is shown in Table 1.

【0024】〔比較例1〕(A)成分のポリエチレン系
樹脂(三井化学社製、商品名:エボリューSP−252
0、密度:0.928g/cm3 、コモノマー:1−ヘ
キセン、MFR:1.7g/10分)100重量部のみ
からなる樹脂成分に、カーボンブラック2.5重量部、
抗酸化剤、ヒンダードアミン系光安定剤を適量配合し、
115mmφのTダイ押出機を用いて、厚み1.5m
m、幅2570mm、長さ50mの土木用シートを巻き
取った。得られた土木用シートの評価は、表−1に示
す。
Comparative Example 1 Polyethylene resin (A) (trade name: EVOLUE SP-252, manufactured by Mitsui Chemicals, Inc.)
0, density: 0.928 g / cm 3, comonomer: 1-hexene, MFR: 1.7 g / 10 min) resin component consisting of only 100 parts by weight, 2.5 parts by weight of carbon black,
An appropriate amount of antioxidant and hindered amine light stabilizer
Using a 115 mmφ T-die extruder, 1.5 m thick
m, a width of 2570 mm, and a length of 50 m for civil engineering. The evaluation of the obtained civil engineering sheet is shown in Table 1.

【0025】〔比較例2〕(A)成分のポリエチレン系
樹脂(三井化学社製、商品名:エボリューSP−202
0、密度:0.916g/cm3 、コモノマー:1−ヘ
キセン、MFR:1.5g/10分)100重量部のみ
からなる樹脂成分に、カーボンブラック2.5重量部、
抗酸化剤、ヒンダードアミン系光安定剤を配合し、11
5mmφのTダイ押出機を用いて、厚み1.5mm、幅
2570mm、長さ50mの土木用シートを巻き取っ
た。得られた土木用シートの評価は、表−1に示す。
[Comparative Example 2] Polyethylene resin of component (A) (trade name: EVOLUE SP-202, manufactured by Mitsui Chemicals, Inc.)
0, density: 0.916 g / cm 3, comonomer: 1-hexene, MFR: 1.5 g / 10 min) resin component consisting of only 100 parts by weight, carbon black 2.5 parts by weight,
Contains antioxidant and hindered amine light stabilizer, 11
Using a 5 mmφ T-die extruder, a civil engineering sheet having a thickness of 1.5 mm, a width of 2570 mm and a length of 50 m was wound up. The evaluation of the obtained civil engineering sheet is shown in Table 1.

【0026】〔比較例3〕実施例1において、(A)成
分のポリエチレン系樹脂を40重量部、(B)成分のポ
リエチレン系樹脂を60重量部とした以外は、実施例1
と同様にして土木用シートを製造した。得られた土木用
シートの評価は、表−1に示す。
Comparative Example 3 Example 1 was repeated except that the polyethylene resin (A) was used in an amount of 40 parts by weight and the polyethylene resin (B) was used in an amount of 60 parts by weight.
A sheet for civil engineering was produced in the same manner as described above. The evaluation of the obtained civil engineering sheet is shown in Table 1.

【0027】〔比較例4〕実施例2において、(B)成
分をポリエチレン系樹脂((ダウケミカル社製、商品
名:エンゲージEG−8100、密度:0.870g/
cm3 、コモノマー:1−オクテン、MFR:18.0
g/10分)に変更した以外は、実施例2と同様にして
土木用シートを製造した。得られた土木用シートの評価
は、表−1に示す。
Comparative Example 4 In Example 2, the component (B) was replaced with a polyethylene resin (trade name: Engage EG-8100, manufactured by Dow Chemical Co., Ltd., density: 0.870 g /
cm3, comonomer: 1-octene, MFR: 18.0
g / 10 minutes), except that the sheet for civil engineering was manufactured in the same manner as in Example 2. The evaluation of the obtained civil engineering sheet is shown in Table 1.

【0028】〔比較例5〕比較例1において、(A)成
分をポリエチレン系樹脂(三井化学社製、商品名:エボ
リューP−SC−00100、密度:0.900g/c
m3 、コモノマー:1−ヘキセン、MFR:7.0g/
10分)100重量部のみからなる樹脂成分とした以外
は、比較例1と同様にして土木用シートを製造した。得
られた土木用シートの評価は、表−1に示す。
Comparative Example 5 In Comparative Example 1, the component (A) was replaced by a polyethylene resin (trade name: Evolu P-SC-00100, manufactured by Mitsui Chemicals, Inc .; density: 0.900 g / c).
m3, comonomer: 1-hexene, MFR: 7.0 g /
10 minutes) A civil engineering sheet was produced in the same manner as in Comparative Example 1, except that a resin component consisting of only 100 parts by weight was used. The evaluation of the obtained civil engineering sheet is shown in Table 1.

【0029】[0029]

【発明の効果】本発明の、特定の密度を有するメタロセ
ン触媒を用いて製造されたポリエチレン系樹脂を少なく
とも2種類ブレンドし、製造された土木用シートは、引
張強さ、引張伸び率および現場での溶着加工等の施工性
に優れたものである。
According to the present invention, a sheet for civil engineering produced by blending at least two kinds of polyethylene resins produced by using a metallocene catalyst having a specific density, has a tensile strength, a tensile elongation rate and an in-situ tensile strength. It has excellent workability such as welding.

【0030】[0030]

【表1】 [Table 1]

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 2D018 DA03 2D043 DA03 DD13 4F071 AA15X AA17 AA18 AA19 AA20X AA21X AF06Y AF15Y AF17Y AF21Y BA01 BB06 BC01 4J002 BB031 BB032 BB051 BB052 BB151 BB152 FD010 GL00 ──────────────────────────────────────────────────続 き Continued on the front page F term (Reference) 2D018 DA03 2D043 DA03 DD13 4F071 AA15X AA17 AA18 AA19 AA20X AA21X AF06Y AF15Y AF17Y AF21Y BA01 BB06 BC01 4J002 BB031 BB032 BB051 BB052 BB151 BB152FD

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 (A)密度が0.915g/cm3 以
上、0.930g/cm3 以下のメタロセン触媒を用い
て重合されたポリエチレン系樹脂50〜90重量%と、
(B)密度が0.875g/cm3 以上、0.910g
/cm3 以下のメタロセン触媒を用いて重合されたポリ
エチレン系樹脂10〜50重量%からなるポリエチレン
系樹脂土木用シート。
(A) 50 to 90% by weight of a polyethylene resin polymerized using a metallocene catalyst having a density of 0.915 g / cm 3 or more and 0.930 g / cm 3 or less;
(B) Density of 0.875 g / cm3 or more, 0.910 g
A polyethylene-based resin civil engineering sheet comprising 10 to 50% by weight of a polyethylene-based resin polymerized using a metallocene catalyst of not more than / cm3.
【請求項2】 該(A)成分および(B)成分のポリエ
チレン系樹脂が、エチレンと炭素数3〜12のα−オレ
フィンとの共重合体であることを特徴とする請求項1記
載のポリエチレン系樹脂土木用シート。
2. The polyethylene according to claim 1, wherein the polyethylene resin of component (A) and component (B) is a copolymer of ethylene and an α-olefin having 3 to 12 carbon atoms. Resin for civil engineering.
【請求項3】 引張伸び率が、750%以上であること
を特徴とする請求項1記載のポリエチレン系樹脂土木用
シート。
3. The sheet according to claim 1, wherein the tensile elongation is 750% or more.
【請求項4】 曲げこわさが、1000kg/cm2 以
上、2000kg/cm2 以下であることを特徴とする
請求項1記載のポリエチレン系樹脂土木用シート。
4. The sheet according to claim 1, wherein the bending stiffness is not less than 1000 kg / cm 2 and not more than 2000 kg / cm 2.
JP23490598A 1998-08-07 1998-08-07 Civil engineering sheet Expired - Lifetime JP4063413B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23490598A JP4063413B2 (en) 1998-08-07 1998-08-07 Civil engineering sheet

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JP2000053785A true JP2000053785A (en) 2000-02-22
JP4063413B2 JP4063413B2 (en) 2008-03-19

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ID=16978144

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Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008525552A (en) * 2004-12-22 2008-07-17 トータル・ペトロケミカルズ・リサーチ・フエリユイ Geomembrane supplies
KR101161325B1 (en) 2012-02-14 2012-07-02 주식회사 제이엠 Multi-plate complex waterproof sheet using waste polyethylene for tunnel construction and tunnel waterproofing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008525552A (en) * 2004-12-22 2008-07-17 トータル・ペトロケミカルズ・リサーチ・フエリユイ Geomembrane supplies
KR101161325B1 (en) 2012-02-14 2012-07-02 주식회사 제이엠 Multi-plate complex waterproof sheet using waste polyethylene for tunnel construction and tunnel waterproofing method thereof

Also Published As

Publication number Publication date
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