JPH03231936A - Foamed film - Google Patents
Foamed filmInfo
- Publication number
- JPH03231936A JPH03231936A JP2598590A JP2598590A JPH03231936A JP H03231936 A JPH03231936 A JP H03231936A JP 2598590 A JP2598590 A JP 2598590A JP 2598590 A JP2598590 A JP 2598590A JP H03231936 A JPH03231936 A JP H03231936A
- Authority
- JP
- Japan
- Prior art keywords
- film
- weight
- parts
- silicone oil
- modified silicone
- 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
Links
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000004743 Polypropylene Substances 0.000 claims abstract description 12
- 229920002545 silicone oil Polymers 0.000 claims abstract description 12
- -1 polypropylene Polymers 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 239000011342 resin composition Substances 0.000 claims abstract description 8
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract 2
- 229920000570 polyether Polymers 0.000 claims abstract 2
- 239000004604 Blowing Agent Substances 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 abstract description 6
- 239000005022 packaging material Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000002932 luster Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 5
- 229920001684 low density polyethylene Polymers 0.000 description 4
- 239000004702 low-density polyethylene Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- USVVENVKYJZFMW-ONEGZZNKSA-N (e)-carboxyiminocarbamic acid Chemical compound OC(=O)\N=N\C(O)=O USVVENVKYJZFMW-ONEGZZNKSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- JMMZCWZIJXAGKW-UHFFFAOYSA-N 2-methylpent-2-ene Chemical compound CCC=C(C)C JMMZCWZIJXAGKW-UHFFFAOYSA-N 0.000 description 1
- UOYIYWCAYFTQLH-UHFFFAOYSA-N 3,7-dinitro-1,3,5,7-tetrazabicyclo[3.3.1]nonane Chemical compound C1N2CN([N+](=O)[O-])CN1CN([N+]([O-])=O)C2 UOYIYWCAYFTQLH-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- KINULKKPVJYRON-PVNXHVEDSA-N n-[(e)-[10-[(e)-(4,5-dihydro-1h-imidazol-2-ylhydrazinylidene)methyl]anthracen-9-yl]methylideneamino]-4,5-dihydro-1h-imidazol-2-amine;hydron;dichloride Chemical compound Cl.Cl.N1CCN=C1N\N=C\C(C1=CC=CC=C11)=C(C=CC=C2)C2=C1\C=N\NC1=NCCN1 KINULKKPVJYRON-PVNXHVEDSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229920005992 thermoplastic resin Polymers 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、ポリプロピレンを主成分とする発泡フィルム
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a foamed film containing polypropylene as a main component.
更に詳しくは、均一微細な気泡より成り、軽くて柔軟で
美麗な真珠様光沢を有する発泡フィルムの製造に関する
。More specifically, the present invention relates to the production of a foamed film that is made up of uniform, fine cells, is light, flexible, and has a beautiful pearl-like luster.
かかる発泡フィルムは、高尚優美な光沢を有する上に、
適度な機械強度を有するため、包装資材、或いは装飾用
資材、梱包用テープ資材、織布資材等広範囲の資材とし
て有用であり、極めて商品価値が高いものである。Such a foamed film not only has a noble and elegant luster, but also
Since it has moderate mechanical strength, it is useful as a wide range of materials such as packaging materials, decorative materials, packaging tape materials, and woven fabric materials, and has extremely high commercial value.
従来、熱可塑性樹脂に発泡剤を添加して、押出成形によ
り微細な気泡を有する発泡フィルムを得る方法として、
例えば特開昭５８−１２８８１８号公報に見られる様に
、メルトインデックスの高いポリプロピレンとメルトイ
ンデックスの高い低密度ポリエチレン（以降ＬＤＰＥと
略称する）樹脂を主成分とし、この樹脂混合物の融点以
上の温度で分解発泡する発泡剤からなる膜状物を樹脂混
合物の融点以下の温度で加熱後、−軸又は二軸延伸する
ことが提案されている。Conventionally, as a method of adding a foaming agent to a thermoplastic resin and obtaining a foamed film with fine bubbles by extrusion molding,
For example, as seen in JP-A-58-128818, the main components are polypropylene with a high melt index and low-density polyethylene (hereinafter abbreviated as LDPE) resin with a high melt index, and at a temperature higher than the melting point of this resin mixture. It has been proposed that a film-like material made of a foaming agent that decomposes and foams is heated at a temperature below the melting point of a resin mixture and then subjected to -axial or biaxial stretching.
しかしながら、上記公報に開示されている方法に基づき
押出成形する場合、最適押出条件の範囲が狭（、押出成
形時に押出機内での溶融樹脂の粘度が急激に変化し易く
、局部的に気泡の膨張が起こり易く、得られる発泡フィ
ルムには微細な気泡に粗大な気泡が混在したものとなり
易い欠点が見られた。However, when extrusion molding is performed based on the method disclosed in the above publication, the range of optimal extrusion conditions is narrow (the viscosity of the molten resin in the extruder tends to change rapidly during extrusion molding, and bubbles expand locally). This tends to occur, and the resulting foamed film has the disadvantage that it tends to have a mixture of fine bubbles and coarse bubbles.
本発明の目的は、この様な欠点のない均一微細な気泡の
みを有し、柔軟性に冨み、且つ美麗な真珠様光沢を有す
る発泡フィルムを提供することにある。An object of the present invention is to provide a foamed film that is free from such defects and has only uniform fine bubbles, is rich in flexibility, and has a beautiful pearl-like luster.
本発明者らは、かかる欠点を解消すべく鋭意検討を重ね
た結果、特定の樹脂と発泡剤を用い、さらにポリエーテ
ル変性シリコーンオイルを添加することにより、押出条
件の範囲が広く、しかも発泡フィルム物性が良好になる
ことを見出し、本発明を完成した。The inventors of the present invention have made extensive studies to solve these drawbacks, and have found that by using a specific resin and blowing agent, and further adding polyether-modified silicone oil, the extrusion conditions can be widened and the foamed film can be produced. It was discovered that the physical properties were improved, and the present invention was completed.
即ち本発明は、メルトインデックスが５〜２０のポリプ
ロピレン１００重量部に対し、メルトインデックスが１
５〜６０の直鎮状低密度ポリエチレン１５〜１００重量
部を含有する樹脂混合物に、樹脂混合物１００重量部に
対しポリエーテル変成シリコーンオイルを０．０５〜０
．３重量部、および発泡剤を０．２〜１．０重量部添加
してなる樹脂組成物を膜状に押出成形し、該樹脂組成物
の融点以下の温度で一軸又は二軸延伸してなることを特
徴とする発泡フィルムである。That is, in the present invention, the melt index is 1 to 100 parts by weight of polypropylene having a melt index of 5 to 20.
A resin mixture containing 15 to 100 parts by weight of straight-cut low density polyethylene of 5 to 60% is added with 0.05 to 0 of polyether-modified silicone oil per 100 parts by weight of the resin mixture.
．． A resin composition containing 3 parts by weight and 0.2 to 1.0 parts by weight of a blowing agent is extruded into a film, and then uniaxially or biaxially stretched at a temperature below the melting point of the resin composition. This is a foamed film that is characterized by:
本発明に用いるポリプロピレン（以降ＰＰと略称する）
は、結晶性重合体であり、ポリプロピレン単独、又はポ
リプロピレンに少量のポリエチレン、エチレン−プロピ
レン共重合体を含む混合物であって、メルトインデック
ス（以１！ＩＭＩと略称する）が５〜２０、好ましくは
６〜１５の範囲のものが用いられる。Ｍｌが５未満では
発泡フィルムとした場合の気泡が微細とならず、真珠様
光沢が得られない。２０を越えると流動性が良すぎて製
膜および延伸が困難となる。Polypropylene used in the present invention (hereinafter abbreviated as PP)
is a crystalline polymer, which is polypropylene alone or a mixture containing polypropylene and a small amount of polyethylene or ethylene-propylene copolymer, and has a melt index (hereinafter abbreviated as 1!IMI) of 5 to 20, preferably Those in the range of 6 to 15 are used. If Ml is less than 5, the bubbles will not be fine when formed into a foamed film, and pearl-like luster will not be obtained. If it exceeds 20, the fluidity is too good and film formation and stretching become difficult.
尚、Ｍ ｒ ハＡＳＴＭ Ｄ １２３８−５２Ｔ ニ準
拠し、荷重２゜１６ｋｇで１０分間測定した数値である
。Incidentally, M r is a value measured in accordance with ASTM D 1238-52T for 10 minutes at a load of 2° and 16 kg.
本発明に用いる直鎖状低密度ポリエチレン（以降Ｌ−Ｌ
ＤＰＥと略称する）は、エチレンにαオレフィンを共重
合した共重合体であって、Ｍｌが１５〜６０、好ましく
は２０〜５０の範囲のものである。Linear low-density polyethylene (hereinafter L-L) used in the present invention
(abbreviated as DPE) is a copolymer obtained by copolymerizing ethylene with α-olefin, and has an Ml of 15 to 60, preferably 20 to 50.
Ｍｌが１５未満でも６０を越えても発泡フィルムとした
場合の気泡が微細とならず真珠様光沢が得られない。If Ml is less than 15 or more than 60, the bubbles will not be fine when formed into a foamed film, and pearl-like luster will not be obtained.
また、α−オレフィンの結合量は特に限定しないが、通
常は２〜２０重量％のものが用いられる。Further, the amount of α-olefin bonded is not particularly limited, but usually 2 to 20% by weight is used.
α〜オレフィンとしてはプロピレン、ブテン−１，４〜
メチルペンテン、ヘキセン−１５オクテン１等が挙げら
れる。α~Olefins include propylene, butene-1,4~
Examples include methylpentene, hexene-15octene 1, and the like.
Ｌ−ＬＤＰＨの使用量はＰＰ１００重量部に対して１５
〜１００重量部である。１５重量部未満では発泡フィル
ムとした場合、フィルムが硬くなり、真珠様光沢も得ら
れない。１００重量部を越えるとフィルムは軟らかくな
りすぎ、真珠様光沢も得られない。The amount of L-LDPH used is 15 parts by weight per 100 parts by weight of PP.
~100 parts by weight. If the amount is less than 15 parts by weight, the foamed film becomes hard and does not have pearl-like luster. If it exceeds 100 parts by weight, the film will become too soft and will not have a pearl-like luster.
本発明に用いるポリエーテル変性シリコーンオイルは、
粘度が２００〜２０００ｃｓ ｔの範囲のものが好まし
く用いられる。The polyether-modified silicone oil used in the present invention is
Those having a viscosity in the range of 200 to 2000 cst are preferably used.
ポリエーテル変性シリコーンオイルの使用量は樹脂混合
物１００重量部に対し０．０５〜０．３重量部である。The amount of polyether-modified silicone oil used is 0.05 to 0.3 parts by weight per 100 parts by weight of the resin mixture.
好ましくは０．１〜０．２重量部である。０．０５重量
部未満では得られた発泡フィルムの気泡の緻密さ、均一
さが不十分であり、さらに適度の柔軟性を得るに到らず
満足な商品価値のものが得られない。一方０．３重量部
を越えると成形性が著しく低下し、特に押出機内でのス
リップ現象が起こり、強いては吐出不能と成り好ましく
ない。Preferably it is 0.1 to 0.2 parts by weight. If it is less than 0.05 parts by weight, the foamed film obtained will have insufficient density and uniformity of cells, and furthermore, it will not be possible to obtain a suitable degree of flexibility and a product with satisfactory commercial value will not be obtained. On the other hand, if the amount exceeds 0.3 parts by weight, the moldability will be significantly lowered, and in particular, a slip phenomenon will occur in the extruder, which may make it impossible to extrude, which is not preferable.
本発明に用いる発泡剤は、有機発泡剤が好適に用いられ
る。例えば、アゾジカルボン酸アミド、ジニトロペンタ
メヂレンテトラミン等が挙げられ、発泡させようとする
重合体の融点より高い温度で分解する発泡剤が用いられ
る。As the blowing agent used in the present invention, an organic blowing agent is preferably used. For example, a foaming agent such as azodicarboxylic acid amide and dinitropentamethylenetetramine is used, which decomposes at a temperature higher than the melting point of the polymer to be foamed.
発泡剤の使用量は樹脂混合物１００重量部に対し０．２
〜２．０重量部である。０．２重量部未満では単位体積
当たりの気泡の数が少ないため、光線の十分な乱反射が
起こらず高尚優美な真珠様光沢を得ることができない。The amount of blowing agent used is 0.2 parts by weight per 100 parts by weight of the resin mixture.
~2.0 parts by weight. If the amount is less than 0.2 parts by weight, the number of bubbles per unit volume is small, and sufficient diffuse reflection of light rays does not occur, making it impossible to obtain an elegant pearl-like luster.
２．０重量部を越えると気泡が大きくなり好ましくない
。有効な添加量は樹脂混合物の体積１０００ｃｃに対し
て発泡剤の分解ガス量が２００〜４０００ｃｃ （２０
°Ｃ１気圧）になる様な発泡剤の添加量（以降有効添加
量と称す）である。例えば有機系発泡剤としてのアゾジ
カルボン酸アマイド（以降ＡＤＣＡと略称する）は、分
解温度１９０〜２０５°Ｃガス発生量２００ｃｃ／ｇで
あれば樹脂混合物１００重量部に対して０．３〜１゜５
重量部が有効添加量である。If it exceeds 2.0 parts by weight, bubbles will become large, which is not preferable. The effective addition amount is that the decomposed gas amount of the blowing agent is 200 to 4000 cc (20
The amount of the blowing agent added (hereinafter referred to as the effective amount added) is such that the temperature is 1 atm per °C. For example, azodicarboxylic acid amide (hereinafter abbreviated as ADCA) as an organic blowing agent has a decomposition temperature of 190 to 205°C and a gas generation rate of 200 cc/g, with a decomposition temperature of 0.3 to 1° per 100 parts by weight of the resin mixture. 5
Parts by weight are the effective amounts added.
本発明の発泡フィルムの製造は、ポリプロピレン主体の
結晶性重合体にＬ−Ｌ Ｄ Ｐ Ｅを加えた樹脂混合物
に有機系発泡剤、及びポリエーテル変性シリコーンオイ
ルを加える事が必要である。ポリエーテル変性シリコー
ンオイルの添加方法に格別の制限はない。To manufacture the foamed film of the present invention, it is necessary to add an organic blowing agent and a polyether-modified silicone oil to a resin mixture in which L-LDPE is added to a crystalline polymer mainly composed of polypropylene. There are no particular restrictions on the method of adding the polyether-modified silicone oil.
本発明の発泡フィルムは融点以下の温度で生成している
気泡を破壊せず偏平化する様に一軸又は二軸延伸するこ
とにより、十分な商品価値の真珠様光沢が得られる。即
ち延伸することによって、発泡体の気泡が偏平化し、発
泡フィルム中の空隙形成層の厚さが減少するために、光
の乱反射及び発泡体内部に透過した光の空隙形成層から
の多座反射が増強される。特に発泡フィルムの気泡が均
一微細で、単位体積当たりの気泡の数が多いときにはこ
の効果が著しく発揮される。By uniaxially or biaxially stretching the foamed film of the present invention at a temperature below the melting point so as to flatten the bubbles without destroying them, a pearl-like luster with sufficient commercial value can be obtained. That is, by stretching, the bubbles in the foam become flat and the thickness of the void-forming layer in the foamed film decreases, resulting in diffuse reflection of light and multiple reflections of light transmitted inside the foam from the void-forming layer. is strengthened. This effect is particularly pronounced when the bubbles in the foamed film are uniform and fine and the number of bubbles per unit volume is large.
本発明に用いる樹脂組成物には、作業性を改善するため
、及び商品価値を高めるために滑剤、着色剤、静電気防
止剤、酸化防止剤、熱安定化剤等の添加剤を添加しても
よい。Additives such as lubricants, colorants, antistatic agents, antioxidants, and heat stabilizers may be added to the resin composition used in the present invention in order to improve workability and increase commercial value. good.
以下実施例により詳細に説明する。 This will be explained in detail below using examples.
実施例１〜６、比較例１〜４
ＰＰを主体にした重合体１．００重置部にＬ−Ｌ ＤＰ
Ｅを第１表に示す割合で混合し、得られた樹脂混合物１
００重量部に八〇ＣＡ ０．４重量部加え、更にポリエ
ーテル変性シリコーンオイルを第１表に示す割合で添加
した。得られた樹脂組成物を単軸スクリュー押出機で温
度１５０〜１７０°Ｃで溶融混煉し、適度の圧力を保ち
つつ金型から厚さ０．６〜０ 、７ ｍｍのシートを押
出成形した。得られたシートを樹脂の融点以下の温度に
加熱しくシートの温度は１２０℃以下であった。）、周
速の異なる一対のロールで長手方向に６倍延伸して厚さ
０．１〜０．１５ｍｍのフィルムを得た。得られた発泡
フィルムの品質を第１表に示す。Examples 1 to 6, Comparative Examples 1 to 4 L-L DP in the overlapping part of PP-based polymer 1.00
Resin mixture 1 obtained by mixing E in the proportions shown in Table 1
0.4 parts by weight of 80CA was added to 00 parts by weight, and polyether-modified silicone oil was further added in the proportions shown in Table 1. The resulting resin composition was melt-kneaded using a single screw extruder at a temperature of 150 to 170°C, and a sheet with a thickness of 0.6 to 0.7 mm was extruded from a mold while maintaining an appropriate pressure. . The obtained sheet was heated to a temperature below the melting point of the resin, and the temperature of the sheet was 120°C or below. ), and was stretched 6 times in the longitudinal direction using a pair of rolls having different circumferential speeds to obtain a film with a thickness of 0.1 to 0.15 mm. The quality of the foamed film obtained is shown in Table 1.
〔発明の効果〕
本発明の発泡フィルムは、特定の樹脂と発泡剤にポリエ
ーテル変性シリコーンオイルを添加して、フィルム化し
、さらに延伸することにより、柔軟性、表面の平滑性を
持ち高尚優美な真珠様光沢を付与することができ、包装
資材、装飾用資材、梱包用テープ資材、織布資材等広範
囲の資材として極めて商品価値が高いものである。[Effects of the Invention] The foamed film of the present invention is made by adding polyether-modified silicone oil to a specific resin and a foaming agent, forming it into a film, and then stretching it. It can impart pearl-like luster and has extremely high commercial value as a wide range of materials such as packaging materials, decorative materials, packing tape materials, and woven fabric materials.
Claims (1)
００重量部に対し、メルトインデックスが１５〜６０の
直鎖状低密度ポリエチレン１５〜１００重量部を含有す
る樹脂混合物に、樹脂混合物１００重量部に対しポリエ
ーテル変成シリコーンオイルを０．０５〜０．３重量部
、および発泡剤を０．２〜２．０重量部添加してなる樹
脂組成物を膜状に押出成形し、該樹脂組成物の融点以下
の温度で一軸又は二軸延伸してなることを特徴とする発
泡フィルム。 ２、ポリエーテル変性シリコーンオイルの粘度が２００
〜２０００ｃｓｔである請求項１記載の発泡フィルム。[Claims] 1. Polypropylene having a melt index of 5 to 20 1.
To a resin mixture containing 15 to 100 parts by weight of linear low density polyethylene having a melt index of 15 to 60, 0.05 to 0.0 parts by weight of polyether-modified silicone oil is added to 100 parts by weight of the resin mixture. A resin composition containing 3 parts by weight and 0.2 to 2.0 parts by weight of a blowing agent is extruded into a film shape, and the resin composition is uniaxially or biaxially stretched at a temperature below the melting point of the resin composition. A foam film characterized by: 2. The viscosity of polyether modified silicone oil is 200
The foamed film according to claim 1, wherein the foamed film has a thickness of ˜2000 cst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2598590A JPH0676506B2 (en) | 1990-02-07 | 1990-02-07 | Foam film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2598590A JPH0676506B2 (en) | 1990-02-07 | 1990-02-07 | Foam film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03231936A true JPH03231936A (en) | 1991-10-15 |
| JPH0676506B2 JPH0676506B2 (en) | 1994-09-28 |
Family
ID=12181010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2598590A Expired - Lifetime JPH0676506B2 (en) | 1990-02-07 | 1990-02-07 | Foam film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0676506B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007231192A (en) * | 2006-03-02 | 2007-09-13 | Japan Polypropylene Corp | Polypropylene-based foamable and stretched film |
| WO2016084889A1 (en) * | 2014-11-28 | 2016-06-02 | 住友化学株式会社 | Thermoplastic resin composition molded article |
| WO2016084888A1 (en) * | 2014-11-28 | 2016-06-02 | 住友化学株式会社 | Molded article comprising thermoplastic resin composition |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101406336B1 (en) * | 2013-10-01 | 2014-06-12 | 김종명 | String for protection of a harvest and manufacturing method thereof |
-
1990
- 1990-02-07 JP JP2598590A patent/JPH0676506B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007231192A (en) * | 2006-03-02 | 2007-09-13 | Japan Polypropylene Corp | Polypropylene-based foamable and stretched film |
| WO2016084889A1 (en) * | 2014-11-28 | 2016-06-02 | 住友化学株式会社 | Thermoplastic resin composition molded article |
| WO2016084888A1 (en) * | 2014-11-28 | 2016-06-02 | 住友化学株式会社 | Molded article comprising thermoplastic resin composition |
| JP5958636B1 (en) * | 2014-11-28 | 2016-08-02 | 住友化学株式会社 | Molded body made of thermoplastic resin composition |
| CN107001676A (en) * | 2014-11-28 | 2017-08-01 | 住友化学株式会社 | Thermoplastic resin composition's formed body engaging |
| CN107001665A (en) * | 2014-11-28 | 2017-08-01 | 住友化学株式会社 | The formed body formed by thermoplastic resin composition |
| EP3225650A4 (en) * | 2014-11-28 | 2018-05-16 | Sumitomo Chemical Company, Ltd. | Molded article comprising thermoplastic resin composition |
| EP3225653A4 (en) * | 2014-11-28 | 2018-05-16 | Sumitomo Chemical Company, Ltd. | Thermoplastic resin composition molded article |
| CN107001676B (en) * | 2014-11-28 | 2020-05-05 | 住友化学株式会社 | Thermoplastic resin composition molded body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0676506B2 (en) | 1994-09-28 |
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