JPH08104784A - Resin composition for lid - Google Patents
Resin composition for lidInfo
- Publication number
- JPH08104784A JPH08104784A JP24288194A JP24288194A JPH08104784A JP H08104784 A JPH08104784 A JP H08104784A JP 24288194 A JP24288194 A JP 24288194A JP 24288194 A JP24288194 A JP 24288194A JP H08104784 A JPH08104784 A JP H08104784A
- Authority
- JP
- Japan
- Prior art keywords
- density
- flow rate
- melt flow
- component
- load
- 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.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、蓋用樹脂組成物に関す
るものである。更に詳しくは、本発明は、環境応力亀裂
抵抗性（Ｅｎｖｉｒｏｎｍｅｎｔａｌ Ｓｔｒｅｓｓ
Ｃｒａｃｋｉｎｇ Ｒｅｓｉｓｔａｎｃｅ；ＥＳＣＲ）
及び金型離型性に優れた蓋用樹脂組成物に関するもので
ある。FIELD OF THE INVENTION The present invention relates to a resin composition for a lid. More specifically, the present invention relates to environmental stress crack resistance (Environmental Stress).
Cracking Resistance (ESCR)
And a resin composition for a lid, which is excellent in mold releasability.
【０００２】[0002]
【従来の技術】容器の密封に使用される蓋（蓋、キャッ
プ、中栓など）は、通常、高圧ラジカル重合法ポリエチ
レンを射出成形することによって得られる。しかしなが
ら、高圧ラジカル重合法ポリエチレンは、洗剤、植物油
などと接触すると応力亀裂破壊を起こしやすく、すなわ
ち環境応力亀裂抵抗性に劣るという欠点がある。この欠
点を改良するため、高圧ラジカル重合法ポリエチレンに
替えて、エチレン−α−オレフィン共重合体を用いるこ
とが提案されているが、この場合は、ＥＳＣＲの改良は
見られるものの、金型離型性に劣るという欠点があっ
た。2. Description of the Related Art Lids (lids, caps, inner stoppers, etc.) used for sealing containers are usually obtained by injection molding of high-pressure radical polymerization polyethylene. However, the high-pressure radical-polymerized polyethylene has a drawback that it is apt to cause stress crack fracture when contacted with detergent, vegetable oil, etc., that is, it is inferior in environmental stress crack resistance. In order to improve this drawback, it has been proposed to use an ethylene-α-olefin copolymer instead of the high-pressure radical polymerization polyethylene. In this case, although the ESCR is improved, the mold release It had the drawback of being inferior in sex.
【０００３】[0003]
【発明が解決しようとする課題】かかる現状に鑑み、本
発明が解決しようとする課題は、環境応力亀裂抵抗性及
び金型離型性に優れた蓋用樹脂組成物を提供する点に存
するものである。In view of the present situation, the problem to be solved by the present invention is to provide a resin composition for lid which is excellent in environmental stress crack resistance and mold releasability. Is.
【０００４】[0004]
【課題を解決するための手段】すなわち、本発明は、下
記（Ａ）６０〜８５重量％及び下記（Ｂ）４０〜１５重
量％からなる蓋用樹脂組成物に係るものである。 （Ａ）：温度１９０℃、荷重 ２．１６ｋｇにおけるメ
ルトフローレートが５〜３０ｇ／１０分であり、かつ密
度が０．９１５〜０．９３０ｇ／ｃｍ3 であるエチレン
−α−オレフィン共重合体 （Ｂ）：温度１９０℃、荷重 ２．１６ｋｇにおけるメ
ルトフローレートが１〜３０ｇ／１０分であり密度が
０．９１５〜０．９３０ｇ／ｃｍ3 であり、かつ下記
（１）式で定義されるＳＲ値が１．５０〜１．９０であ
る高圧ラジカル重合法ポリエチレン ＳＲ＝Ａ／Ｂ （１） ここで、Ａは内径Ｂｍｍのオリフィスから押し出された
樹脂ストランドの外径（ｍｍ）を表わす。Means for Solving the Problems That is, the present invention relates to a resin composition for lids comprising the following (A) 60 to 85% by weight and the following (B) 40 to 15% by weight. (A): ethylene-α-olefin copolymer having a melt flow rate of 5 to 30 g / 10 minutes at a temperature of 190 ° C. and a load of 2.16 kg and a density of 0.915 to 0.930 g / cm 3. B): SR having a melt flow rate of 1 to 30 g / 10 minutes and a density of 0.915 to 0.930 g / cm 3 at a temperature of 190 ° C. and a load of 2.16 kg, and being defined by the following formula (1). High-pressure radical polymerization polyethylene SR having a value of 1.50 to 1.90 SR = A / B (1) Here, A represents the outer diameter (mm) of the resin strand extruded from the orifice having the inner diameter Bmm.
【０００５】以下、詳細に説明する。The details will be described below.
【０００６】本発明の（Ａ）成分は、温度１９０℃、荷
重 ２．１６ｋｇにおけるメルトフローレートが５〜３
０ｇ／１０分であり、かつ密度が０．９１５〜０．９３
０ｇ／ｃｍ3 であるエチレン−α−オレフィン共重合体
である。The component (A) of the present invention has a melt flow rate of 5 to 3 at a temperature of 190 ° C. and a load of 2.16 kg.
0 g / 10 minutes and a density of 0.915 to 0.93
It is an ethylene-α-olefin copolymer having 0 g / cm 3 .
【０００７】（Ａ）成分の温度１９０℃、荷重 ２．１
６ｋｇにおけるメルトフローレートは５〜３０ｇ／１０
分、好ましくは７〜２５ｇ／１０分である。メルトフロ
ーレートが低すぎると射出成形性に劣り、一方メルトフ
ローレートが高すぎると強度に劣る。Component (A) temperature 190 ° C., load 2.1
Melt flow rate at 6 kg is 5-30 g / 10
Min, preferably 7 to 25 g / 10 min. If the melt flow rate is too low, the injection moldability will be poor, while if the melt flow rate is too high, the strength will be poor.
【０００８】（Ａ）成分の密度は０．９１５〜０．９３
０ｇ／ｃｍ3 、好ましくは０．９１７〜０．９２８ｇ／
ｃｍ3 である。密度が低すぎると柔軟になりすぎ、一方
密度が高すぎると剛性が増し柔軟性が失われる。The density of the component (A) is 0.915 to 0.93.
0 g / cm 3 , preferably 0.917 to 0.928 g /
It is cm 3 . If the density is too low, it becomes too flexible, while if the density is too high, the rigidity increases and the flexibility is lost.
【０００９】（Ａ）成分のエチレン−α−オレフィン共
重合体をなすα−オレフィンとしては、具体的にはプロ
ピレン、ブテン−１、４−メチルペンテン−１、ヘキセ
ン−１、オクテン−１、デセン−１などをあげることが
でき、なかでも炭素数が３〜１０のものが好ましい。こ
れらα−オレフィンはその１種を単独を用いてもよく、
またその２種以上を併用してもよい。The α-olefin constituting the ethylene-α-olefin copolymer as the component (A) is specifically propylene, butene-1,4-methylpentene-1, hexene-1, octene-1, decene. -1, etc. can be mentioned, and among them, those having 3 to 10 carbon atoms are preferable. One of these α-olefins may be used alone,
Moreover, you may use together 2 or more types.
【００１０】（Ａ）成分を製造する方法としては、遷移
金属触媒を用いてエチレンとα−オレフィンを重合する
方法をあげることができる。通常の重合反応条件として
は、重合温度３０〜３００℃、重合圧力常圧〜３０００
ｋｇ／ｃｍ2 、溶媒の存在下又は不存在下、気−固、液
−固又は均一液相下で行なうものをあげることができ
る。As a method for producing the component (A), a method of polymerizing ethylene and α-olefin using a transition metal catalyst can be mentioned. Usual polymerization reaction conditions include a polymerization temperature of 30 to 300 ° C., a polymerization pressure of normal pressure to 3000.
kg / cm 2 , in the presence or absence of a solvent, in a gas-solid, liquid-solid or homogeneous liquid phase.
【００１１】本発明の（Ｂ）成分は、温度１９０℃、荷
重 ２．１６ｋｇにおけるメルトフローレートが１〜３
０ｇ／１０分であり密度が０．９１５〜０．９３０ｇ／
ｃｍ 3 であり、かつ下記（１）式で定義されるＳＲ値が
１．５０〜１．９０である高圧ラジカル重合法ポリエチ
レンである。The component (B) of the present invention has a temperature of 190 ° C.
The melt flow rate at a weight of 2.16 kg is 1 to 3
0 g / 10 minutes with a density of 0.915 to 0.930 g /
cm 3And the SR value defined by the following equation (1) is
High-pressure radical polymerization method polyethylene which is 1.50 to 1.90
It's Ren.
【００１２】ＳＲ＝Ａ／Ｂ （１）SR = A / B (1)
【００１３】ここで、Ａは内径Ｂｍｍのオリフィスから
押し出された樹脂ストランドの外径（ｍｍ）を表わす。Here, A represents the outer diameter (mm) of the resin strand extruded from the orifice having the inner diameter Bmm.
【００１４】（Ｂ）成分の温度１９０℃、荷重 ２．１
６ｋｇにおけるメルトフローレートは１〜３０ｇ／１０
分、好ましくは１〜２５ｇ／１０分である。メルトフロ
ーレートが低すぎると射出成形性に劣り、一方メルトフ
ローレートが高すぎると強度に劣る。Component (B) temperature 190 ° C., load 2.1
Melt flow rate at 6 kg is 1-30 g / 10
Min, preferably 1 to 25 g / 10 min. If the melt flow rate is too low, the injection moldability will be poor, while if the melt flow rate is too high, the strength will be poor.
【００１５】（Ｂ）成分の密度は０．９１５〜０．９３
０ｇ／ｃｍ3 、好ましくは０．９１７〜０．９２８ｇ／
ｃｍ3 である。密度が低すぎると柔軟になりすぎ、一方
密度が高すぎると剛性が増し柔軟性が失われる。The density of the component (B) is 0.915 to 0.93.
0 g / cm 3 , preferably 0.917 to 0.928 g /
It is cm 3 . If the density is too low, it becomes too flexible, while if the density is too high, the rigidity increases and the flexibility is lost.
【００１６】（Ｂ）成分のＳＲ値は１．５０〜１．９
０、好ましくは１．６０〜１．９０である。ＳＲ値が小
さすぎると金型離型性に対する改良効果が不十分であ
り、ＳＲ値が大きすぎると環境応力亀裂抵抗性に劣る。The SR value of the component (B) is 1.50 to 1.9.
It is 0, preferably 1.60 to 1.90. If the SR value is too small, the effect of improving the mold releasability is insufficient, and if the SR value is too large, the environmental stress crack resistance is poor.
【００１７】（Ｂ）成分である高圧ラジカル重合法ポリ
エチレンは、有機過酸化物又は酸素などの遊離基発生剤
を重合開始剤とし、通常重合圧力１０００〜３０００ｋ
ｇ／ｃｍ2 程度、重合温度１３０〜３００℃程度の条件
下にエチレンをラジカル重合させることにより得られる
ものである。The high-pressure radical polymerization polyethylene which is the component (B) uses a free radical generator such as organic peroxide or oxygen as a polymerization initiator and usually has a polymerization pressure of 1000 to 3000 k.
It is obtained by radically polymerizing ethylene under the conditions of about g / cm 2 and a polymerization temperature of about 130 to 300 ° C.
【００１８】本発明の蓋用樹脂組成物は、（Ａ）成分６
０〜８５重量％、好ましくは６５〜８０重量％及び
（Ｂ）成分１５〜４０重量％、好ましくは２０〜３５重
量％からなるものである。The resin composition for a lid of the present invention comprises (A) component 6
It is composed of 0 to 85% by weight, preferably 65 to 80% by weight, and 15 to 40% by weight, and preferably 20 to 35% by weight of the component (B).
【００１９】（Ａ）成分が過少（（Ｂ）成分が過多）で
あると環境応力亀裂抵抗性に劣り、一方（Ａ）成分が過
多（（Ｂ）成分が過少）であると金型離型性に対する改
良効果が不十分となる。When the amount of component (A) is too small (the amount of component (B) is excessive), the environmental stress crack resistance is poor, while when the amount of component (A) is excessive (the amount of component (B) is too small), the mold release is performed. The effect of improving the sex becomes insufficient.
【００２０】本発明の樹脂組成物を得るためのブレンド
方法としては、通常の混合操作、たとえば、タンブラー
ブレンダー法、ヘンシェルミキサー法、バンバリーミキ
サー法、押出造粒法などにより行なうことができる。The blending method for obtaining the resin composition of the present invention can be carried out by a usual mixing operation, for example, a tumbler blender method, a Henschel mixer method, a Banbury mixer method, an extrusion granulation method and the like.
【００２１】本発明の樹脂組成物は、必須成分である
（Ａ）成分及び（Ｂ）成分の他に、中和剤、分散剤、酸
化防止剤、滑剤、耐候性改良剤、帯電防止剤、顔料、フ
ィラーなどの他の付加的成分を、本発明の効果を阻害し
ない範囲で含有したものであってもよい。The resin composition of the present invention comprises, in addition to the essential components (A) and (B), a neutralizing agent, dispersant, antioxidant, lubricant, weather resistance improver, antistatic agent, Other additional components such as pigments and fillers may be contained within a range that does not impair the effects of the present invention.
【００２２】[0022]
【実施例】以下、本発明を実施例によって説明する。評
価方法は次のとおりである。EXAMPLES The present invention will be described below with reference to examples. The evaluation method is as follows.
【００２３】（１）メルトフローレート ＪＩＳ−Ｋ７２１０に従った。測定温度１９０℃、荷重
２．１６ｋｇとした。(1) Melt flow rate According to JIS-K7210. The measurement temperature was 190 ° C. and the load was 2.16 kg.
【００２４】（２）密度 ＪＩＳ−Ｋ６７６０に従った。(2) Density According to JIS-K6760.
【００２５】（３）ＳＲ値 ＪＩＳ−Ｋ７２１０により測定温度１９０℃（ただし、
上記（１）で測定したメルトフローレートが１０ｇ／１
０分以上のサンプルは１５０℃）、荷重２．１６ｋｇで
メルトフローレートを測定する時の、内径Ｂｍｍのオリ
フィスから押し出された樹脂ストランドの外径をＡｍｍ
としてＡ／Ｂの値を測定した。なお、内径Ｂｍｍは２．
１ｍｍとした。(3) SR value A measurement temperature of 190 ° C. according to JIS-K7210 (however,
The melt flow rate measured in (1) above is 10 g / 1
The outer diameter of the resin strand extruded from the orifice with an inner diameter of Bmm is Amm when measuring the melt flow rate with a load of 2.16 kg for a sample of 0 minutes or more).
The value of A / B was measured as The inner diameter Bmm is 2.
It was set to 1 mm.
【００２６】（４）金型離型性 射出成形機（東芝機械社製、商品名 ＩＳ−１００Ｅ
Ｎ）を使用し、射出圧力８００ｋｇ／ｃｍ2 、シリンダ
ー温度２００℃、金型温度４０℃、成形サイクル４０秒
の条件により、１５ｃｍ角×１．５ｃｍ厚さの蓋を成形
した。この際の成形品の金型からの離型性を評価し、離
型しやすいものを○、離型しにくい物を×とした。(4) Mold releasability Injection molding machine (manufactured by Toshiba Machine Co., trade name IS-100E
N) was used to mold a lid of 15 cm square × 1.5 cm thickness under the conditions of injection pressure 800 kg / cm 2 , cylinder temperature 200 ° C., mold temperature 40 ° C., molding cycle 40 seconds. At this time, the releasability of the molded product from the mold was evaluated, and those that were easy to release were rated as ◯ and those that were difficult to release were rated as x.
【００２７】（５）環境応力亀裂抵抗性（ＥＳＣＲ） 射出成形機（東芝機械社製、商品名 ＩＳ−１００Ｅ
Ｎ）を使用し、射出圧力８００ｋｇ／ｃｍ2 、シリンダ
ー温度２００℃、金型温度４０℃、成形サイクル４０秒
の条件により、外径２９ｍｍφ×厚み１．５ｍｍのびん
の中栓を成形した。該中栓を外径２７ｍｍφのステンレ
スパイプに打栓し、イゲパール１０ｖｏｌ％水溶液中に
浸漬させ、５０℃で割れる時間をもって環境応力亀裂抵
抗性を評価した。(5) Environmental stress crack resistance (ESCR) Injection molding machine (manufactured by Toshiba Machine Co., trade name IS-100E)
N) was used to mold an inner plug of a bottle having an outer diameter of 29 mmφ and a thickness of 1.5 mm under the conditions of an injection pressure of 800 kg / cm 2 , a cylinder temperature of 200 ° C., a mold temperature of 40 ° C., and a molding cycle of 40 seconds. The inner stopper was capped on a stainless pipe having an outer diameter of 27 mmφ, immersed in an aqueous solution of 10 vol% Igepearl, and the environmental stress crack resistance was evaluated by the time at which it was divided at 50 ° C.
【００２８】実施例１ 表１に示す配合を、３０ｍｍ径のスクリューを有する押
出機にて１８０℃で造粒し、評価を行なった。結果を表
１に示した。Example 1 The formulations shown in Table 1 were granulated at 180 ° C. with an extruder having a screw having a diameter of 30 mm, and evaluated. The results are shown in Table 1.
【００２９】実施例２〜４及び比較例１〜４ 表１〜表２に示す条件としたこと以外、実施例１と同様
に行なった。結果を表１〜表２に示した。Examples 2 to 4 and Comparative Examples 1 to 4 The same procedure as in Example 1 was carried out except that the conditions shown in Tables 1 and 2 were used. The results are shown in Tables 1 and 2.
【００３０】結果から次のことがわかる。本発明の条件
を充足するすべての実施例は、すべての評価項目におい
て満足すべき結果を示している。一方、本発明の（Ａ）
成分を欠く比較例１及び（Ａ）成分が過少（（Ｂ）成分
が過多）な比較例２は環境応力亀裂抵抗性に劣り、
（Ａ）成分が過多（（Ｂ）成分が過少）な比較例３及び
（Ｂ）成分のＳＲ値が過小な比較例４は金型離型性に劣
る。The results show the following. All the examples satisfying the conditions of the present invention show satisfactory results in all evaluation items. On the other hand, (A) of the present invention
Comparative Example 1 lacking components and Comparative Example 2 having too little component (A) (too much component (B)) have poor environmental stress crack resistance,
The comparative example 3 in which the component (A) is excessive (the component (B) is excessively small) and the comparative example 4 in which the SR value of the component (B) is excessively small are inferior in mold releasability.
【００３１】[0031]
【表１】 −−−−−−−−−−−−−−−−−−−−−−−−−−− 実 施 例 1 2 3 4 配合 (A) 成分 種類 *1 A1 A1 A1 A2 量 wt% 75 75 75 75 特性 MFR g/10分 *2 20 20 20 20 密度 g/cm3 0.925 0.925 0.925 0.920 (B) 成分 種類 *3 B1 B2 B3 B2 量 wt% 25 25 25 25 特性 MFR g/10分 *2 2 7 20 7 密度 g/cm3 0.919 0.918 0.918 0.918 SR 1.65 1.78 1.67 1.78 評価 金型離型性 ○ ○ ○ ○ ESCR 時間 ＞ 200 ＞ 200 100 ＞ 200 −−−−−−−−−−−−−−−−−−−−−−−−−−−[Table 1] −−−−−−−−−−−−−−−−−−−−−−−−−−− Actual Example 1 2 3 4 Formulation (A) Component type * 1 A1 A1 A1 A2 Amount wt% 75 75 75 75 Characteristic MFR g / 10 min * 2 20 20 20 20 Density g / cm 3 0.925 0.925 0.925 0.920 (B) Component type * 3 B1 B2 B3 B2 Amount wt% 25 25 25 25 Characteristic MFR g / 10 minutes * 2 2 7 20 7 Density g / cm 3 0.919 0.918 0.918 0.918 SR 1.65 1.78 1.67 1.78 Evaluation mold releasability ○ ○ ○ ○ ESCR time ＞ 200 ＞ 200 100 ＞ 200 −−−−−−−−−− −−−−−−−−−−−−−−−−−−
【００３２】[0032]
【表２】 −−−−−−−−−−−−−−−−−−−−−−−−−−− 比 較 例 1 2 3 4 配合 (A) 成分 種類 *1 - A1 A1 A1 量 wt% 0 50 90 75 特性 MFR g/10分 *2 - 20 20 20 密度 g/cm3 - 0.925 0.925 0.925 (B) 成分 種類 *3 B2 B2 B2 B4 量 wt% 100 50 10 25 特性 MFR g/10分 *2 7 7 7 7 密度 g/cm3 0.918 0.918 0.918 0.922 SR 1.78 1.78 1.78 1.25 評価 金型離型性 ○ ○ × × ESCR 時間 3 5 ＞ 200 ＞ 200 −−−−−−−−−−−−−−−−−−−−−−−−−−−[Table 2] −−−−−−−−−−−−−−−−−−−−−−−−−−− Comparative Example 1 2 3 4 Formulation (A) Component type * 1-A1 A1 A1 The amount wt% 0 50 90 75 properties MFR g / 10 min * 2 - 20 20 20 density g / cm 3 - 0.925 0.925 0.925 (B) component type * 3 B2 B2 B2 B4 amount wt% 100 50 10 25 properties MFR g / 10 minutes * 2 7 7 7 7 Density g / cm 3 0.918 0.918 0.918 0.922 SR 1.78 1.78 1.78 1.25 Evaluation mold releasability ○ ○ × × ESCR time 3 5 ＞ 200 ＞ 200 −−−−−−−−−−− −−−−−−−−−−−−−−−−−
【００３３】＊１ （Ａ）成分の種類 Ａ１：エチレン−ブテン−１共重合体（ブテン−１含量
＝５．５重量％） Ａ２：エチレン−ヘキセン−１共重合体（ヘキセン−１
含量＝９重量％） ＊２ ＭＦＲ：温度１９０℃、荷重 ２．１６ｋｇにお
けるメルトフローレート ＊３ （Ｂ）成分の種類 Ｂ１：高圧ラジカル重合法ポリエチレン Ｂ２：高圧ラジカル重合法ポリエチレン Ｂ３：高圧ラジカル重合法ポリエチレン Ｂ４：高圧ラジカル重合法ポリエチレン* 1 Type of component (A) A1: ethylene-butene-1 copolymer (butene-1 content = 5.5% by weight) A2: ethylene-hexene-1 copolymer (hexene-1)
Content = 9% by weight) * 2 MFR: Melt flow rate at a temperature of 190 ° C. and a load of 2.16 kg * 3 (B) Component type B1: High-pressure radical polymerization polyethylene B2: High-pressure radical polymerization polyethylene B3: High-pressure radical polymerization method Polyethylene B4: High-pressure radical polymerization polyethylene
【００３４】[0034]
【発明の効果】以上説明したとおり、本発明により、環
境応力亀裂抵抗性及び金型離型性に優れた蓋用樹脂組成
物を提供することができた。As described above, according to the present invention, it is possible to provide a resin composition for a lid which is excellent in environmental stress crack resistance and mold releasability.
Claims (1)
（Ｂ）４０〜１５重量％からなる蓋用樹脂組成物。 （Ａ）：温度１９０℃、荷重 ２．１６ｋｇにおけるメ
ルトフローレートが５〜３０ｇ／１０分であり、かつ密
度が０．９１５〜０．９３０ｇ／ｃｍ3 であるエチレン
−α−オレフィン共重合体 （Ｂ）：温度１９０℃、荷重 ２．１６ｋｇにおけるメ
ルトフローレートが１〜３０ｇ／１０分であり密度が
０．９１５〜０．９３０ｇ／ｃｍ3 であり、かつ下記
（１）式で定義されるＳＲ値が１．５０〜１．９０であ
る高圧ラジカル重合法ポリエチレン ＳＲ＝Ａ／Ｂ （１） ここで、Ａは内径Ｂｍｍのオリフィスから押し出された
樹脂ストランドの外径（ｍｍ）を表わす。1. A resin composition for a lid, which comprises 60 to 85% by weight of the following (A) and 40 to 15% by weight of the following (B). (A): ethylene-α-olefin copolymer having a melt flow rate of 5 to 30 g / 10 minutes at a temperature of 190 ° C. and a load of 2.16 kg and a density of 0.915 to 0.930 g / cm 3. B): SR having a melt flow rate of 1 to 30 g / 10 minutes and a density of 0.915 to 0.930 g / cm 3 at a temperature of 190 ° C. and a load of 2.16 kg, and being defined by the following formula (1). High-pressure radical polymerization polyethylene SR having a value of 1.50 to 1.90 SR = A / B (1) Here, A represents the outer diameter (mm) of the resin strand extruded from the orifice having the inner diameter Bmm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24288194A JPH08104784A (en) | 1994-10-06 | 1994-10-06 | Resin composition for lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24288194A JPH08104784A (en) | 1994-10-06 | 1994-10-06 | Resin composition for lid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08104784A true JPH08104784A (en) | 1996-04-23 |
Family
ID=17095624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24288194A Pending JPH08104784A (en) | 1994-10-06 | 1994-10-06 | Resin composition for lid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08104784A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001247727A (en) * | 2000-03-02 | 2001-09-11 | Sumitomo Chem Co Ltd | Ethylenic resin composition for injection molding |
| DE10015593A1 (en) * | 2000-03-29 | 2001-10-11 | Clariant Gmbh | Use of polyolefin waxes in plastics processing |
| JP2002544027A (en) * | 1998-04-14 | 2002-12-24 | オーデ マイケル ヤコブス イアン | Injection molding method |
| JP2005060517A (en) * | 2003-08-12 | 2005-03-10 | Japan Polyolefins Co Ltd | Polyethylene resin for cap for vessel lid, and vessel lid and thin thickness construction composed thereof |
| JP2010229217A (en) * | 2009-03-26 | 2010-10-14 | Japan Polyethylene Corp | Polyethylene composition for injection molding, and injection molded product using the same |
-
1994
- 1994-10-06 JP JP24288194A patent/JPH08104784A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002544027A (en) * | 1998-04-14 | 2002-12-24 | オーデ マイケル ヤコブス イアン | Injection molding method |
| JP2001247727A (en) * | 2000-03-02 | 2001-09-11 | Sumitomo Chem Co Ltd | Ethylenic resin composition for injection molding |
| DE10015593A1 (en) * | 2000-03-29 | 2001-10-11 | Clariant Gmbh | Use of polyolefin waxes in plastics processing |
| JP2005060517A (en) * | 2003-08-12 | 2005-03-10 | Japan Polyolefins Co Ltd | Polyethylene resin for cap for vessel lid, and vessel lid and thin thickness construction composed thereof |
| JP2010229217A (en) * | 2009-03-26 | 2010-10-14 | Japan Polyethylene Corp | Polyethylene composition for injection molding, and injection molded product using the same |
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