JPH01172441A - Corrugated board-like synthetic resin object having transparency - Google Patents
Corrugated board-like synthetic resin object having transparencyInfo
- Publication number
- JPH01172441A JPH01172441A JP32982787A JP32982787A JPH01172441A JP H01172441 A JPH01172441 A JP H01172441A JP 32982787 A JP32982787 A JP 32982787A JP 32982787 A JP32982787 A JP 32982787A JP H01172441 A JPH01172441 A JP H01172441A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- parallel
- ethylene
- propylene
- transparency
- 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
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 29
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 24
- 229920005604 random copolymer Polymers 0.000 claims abstract description 11
- HZVFRKSYUGFFEJ-YVECIDJPSA-N (2r,3r,4s,5r)-7-phenylhept-6-ene-1,2,3,4,5,6-hexol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=CC1=CC=CC=C1 HZVFRKSYUGFFEJ-YVECIDJPSA-N 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 3
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 3
- 150000002367 halogens Chemical class 0.000 claims abstract description 3
- -1 propylene-ethylene Chemical group 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 19
- 239000002667 nucleating agent Substances 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 3
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 2
- 238000000638 solvent extraction Methods 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract description 11
- 239000005977 Ethylene Substances 0.000 abstract description 11
- 229920001971 elastomer Polymers 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 abstract 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 abstract 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 238000002834 transmittance Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 229920005629 polypropylene homopolymer Polymers 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 229920001400 block copolymer Polymers 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 244000144972 livestock Species 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、製泊用の板材あるいは、雪囲い、畜舎の断熱
保温材などとして使用される合成樹脂製段ボール状物に
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a synthetic resin corrugated material used as a board material for bundling, a snow fence, a heat insulating material for livestock pens, and the like.
（従来技術とその問題点）
第１図に示すような、上下のライナー部２，３とこのラ
イナー部間を長手方向に平行に仕切る多数のリブ４とを
一体的に溶融押出しして、これをフォーマ−で成形しつ
つ冷却固化してなる合成樹脂製段ボール状物は、一般的
には、主として物性と樹脂原料の低価格性から、汎用プ
ラスチックであるポリプロピレンを主材としたブロック
コポリマーが使用されている。(Prior art and its problems) As shown in FIG. Synthetic resin corrugated products that are formed by molding with a former and cooling and solidifying are generally made of block copolymers based on polypropylene, a general-purpose plastic, mainly due to its physical properties and low cost of resin raw materials. has been done.
しかし、この種の合成樹脂製段ボール状物は、剛性が要
求されることから、１００〜６００虜程度の厚みが必要
であり、且つ溶融押出後の冷却を空気冷却によって行な
うという製造法的制約もあって、ポリプロピレンを主成
分とする樹脂原料によっては比較的透明なものを得るこ
とが困難である。However, this type of synthetic resin corrugated material requires rigidity, so it needs to be about 100 to 600 mm thick, and there are also manufacturing legal restrictions that require air cooling to be used for cooling after melt extrusion. Therefore, it is difficult to obtain a relatively transparent resin material whose main component is polypropylene.
一方、ケースなどの一部の容器類や、雪囲いのような一
部建材においては、内容物あるいは物体の視認性や採光
性などの点から透明性の良好な合成樹脂製段ボール状物
が希求されている。On the other hand, for some containers such as cases and some building materials such as snow fences, synthetic resin cardboard with good transparency is desired from the viewpoint of visibility of contents or objects and lighting. ing.
しかしながら、単に透明性の点にのみ着目するのであれ
ば、ポリカーボネート樹脂やアクリル樹脂などを使用す
ることによって達成されるが、これらの原料では、ポリ
プロピレン等に比較して高価格であり、物性と価格を考
慮したコストパフォーマンスを満足することはできない
。However, if the focus is solely on transparency, this can be achieved by using polycarbonate resin or acrylic resin, but these raw materials are expensive compared to polypropylene, etc., and have poor physical properties and price. It is not possible to satisfy the cost performance considering the above.
本発明は、上述の問題点に鑑みてなされたものであって
、その目的はポリプロピレンを含む原料を使用して、従
来のものに比較して透明性に勝れた合成樹脂製段ボール
状物を提供することにある。The present invention was made in view of the above-mentioned problems, and its purpose is to create a synthetic resin corrugated board with superior transparency compared to conventional ones, using a raw material containing polypropylene. It is about providing.
（問題点を解決するための手段）
上記目的を達成するため、本発明は間隔を置いて上下に
平行配置された一対のライナー部と、このライナー部間
を長手方向に平行に仕切る多数のリブとを備え、且つ、
このリブと前記ライナー部とが合成樹脂原料を一体に押
出して成形される段ボール状物において、
前記合成樹脂原料はプロピレン−エチレンランダムコポ
リマー単独あるいはポリプロピレンとプロピレン−エチ
レンランダムコポリマーとを混合した混合物を主材とし
、この主材に所定量の核剤を添加したものであって、前
記主材中のエチレン成分を０．５〜７重量％とし、且つ
、前記核剤を一般式
％式％［１］
（式中Ｒ１及びＲ２はハロゲン又はアルキル基）で表わ
されるベンジリデンソルビトール系のものとなすことを
特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention includes a pair of liner parts vertically arranged in parallel at intervals, and a large number of ribs partitioning the liner parts in parallel in the longitudinal direction. and
In a corrugated product in which the ribs and the liner portion are formed by extruding a synthetic resin raw material together, the synthetic resin raw material is mainly composed of a propylene-ethylene random copolymer alone or a mixture of polypropylene and a propylene-ethylene random copolymer. A predetermined amount of nucleating agent is added to the main material, the ethylene component in the main material is 0.5 to 7% by weight, and the nucleating agent is expressed by the general formula % [1 ] (wherein R1 and R2 are halogen or alkyl groups).
本発明の合成樹脂製段ボール状物の寸法形状は、横断面
が上下のライナー部が各々１００〜６００μｓの厚みを
有し、これらのライナーを長手方向（押出方向）に平行
に仕切るリブの厚みが２００〜４００ｐであって、上下
ライナー間の全体厚みが２〜２０ｍ■程度に、一体的に
押出し成形されたものであって、適宜の幅および長さを
有するものである。The size and shape of the synthetic resin corrugated board of the present invention is such that the upper and lower liner sections each have a thickness of 100 to 600 μs in cross section, and the ribs that partition these liners in parallel to the longitudinal direction (extrusion direction) have a thickness of 100 to 600 μs. It is 200 to 400 p, the total thickness between the upper and lower liners is about 2 to 20 m, and is integrally extruded and has an appropriate width and length.
樹脂原料は、プロピレン−エチレンランダムコポリマー
単独あるいはポリプロピレンのホモポリマーとプロピレ
ン−エチレンランダムコポリマーとを混合した樹脂中に
、該プロピレン−エチレンランダムコポリマー中のエチ
レン成分が０．５〜７重量％含有するように調整し、こ
れに前記（Ｉ）の−紋穴で示されるベンジリデンソルビ
トール系の核剤を所定量添加したものから構成される。The resin raw material is a propylene-ethylene random copolymer alone or a mixture of a polypropylene homopolymer and a propylene-ethylene random copolymer, and the ethylene component in the propylene-ethylene random copolymer is contained in an amount of 0.5 to 7% by weight. and a predetermined amount of a benzylidene sorbitol-based nucleating agent indicated by the symbol (I) above is added thereto.
上記の樹脂中のエチレン成分が０，５重量％未満では、
透明性が劣るものとなり、７重量％以上では段ボール状
物としての剛性などが低下する。If the ethylene component in the above resin is less than 0.5% by weight,
The transparency will be poor, and if it exceeds 7% by weight, the rigidity of the corrugated board will decrease.
一方、核剤の添加量は有効性、成形性ζ経済性の点から
決定される。On the other hand, the amount of the nucleating agent added is determined from the viewpoints of effectiveness, formability and economy.
合成樹脂製段ボール状物の透明性の改良を主目的とする
場合は上記構成の樹脂原料で足りるが、耐低温衝撃性な
どの物性が要求される場合は、上記樹脂原料にエチレン
−プロピレンゴム成分を所定量添加することが好ましい
。If the main purpose is to improve the transparency of a synthetic resin corrugated board, the resin raw material with the above structure is sufficient, but if physical properties such as low-temperature impact resistance are required, an ethylene-propylene rubber component may be added to the resin raw material. It is preferable to add a predetermined amount of.
（作 用）
本発明の合成樹脂製段ボール状物は、樹脂原料の組成を
所定量のエチレン成分を含むものとし、さらに結晶化核
剤を添加しているので、樹脂原料を溶融状態で押出一体
成形するに際し、樹脂の結晶化過程で核の生成速度が促
進されるので、生成する結晶のサイズは比較的小さなも
のとなって、従来の核剤を添加しないものと比較して、
透明性が向上するものと思われる。(Function) In the synthetic resin corrugated material of the present invention, the composition of the resin raw material is such that it contains a predetermined amount of ethylene component, and a crystallization nucleating agent is further added, so the resin raw material is extruded and integrally molded in a molten state. In this process, the rate of nucleation is accelerated during the crystallization process of the resin, so the size of the crystals produced is relatively small, compared to conventional ones in which no nucleating agent is added.
This is expected to improve transparency.
（実 施 例） 以下本発明について好適な実施例により説明する。(Example) The present invention will be explained below using preferred examples.
実施例１８
ポリプロピレンホモポリマー（宇部興産製ＲＥ１２０５
）５０重量％とエチレン成分を３重量％含むプロピレン
−エチレンランダムコポリマー（同社製： Ｂ５０１Ｈ
）５０重量％とをブレンドして樹脂原料全量に対するエ
チレン成分含有率を１．５重量％とし、これに前記（１
）式においてＲ簡Ｃぶ、Ｒ２■ＣＨａの１．３ （Ｐ−
クロル）２．４ （Ｐ−メチル）ベンジリデンソルビト
ール（ＥＣ化学製： ＥＣ−４）を０．２％添加した樹
脂原料を、Ｔ型ダイを取着した押出機に供給して、第１
図に示す断面形状に対応したダイから押出し、中空部に
は該ダイの芯金から圧空を供給するとともに、上下ライ
ナー部２．３はその上下に対設された真空ホーマーに接
触させつつ冷却して、合成樹脂製段ボール状物１を作製
した。得られた合成樹脂製段ボール状物１は上下のライ
ナー部２，３の厚みが２７０４、リブ部４の厚みが２１
０／／Ｊｌ。Example 18 Polypropylene homopolymer (RE1205 manufactured by Ube Industries)
) 50% by weight and a propylene-ethylene random copolymer containing 3% by weight of ethylene component (manufactured by the company: B501H)
) 50% by weight to make the ethylene component content 1.5% by weight based on the total resin raw material, and add the above (1
) formula, R simple Cbu, R2 ■ CHa 1.3 (P-
A resin raw material to which 0.2% of (P-methyl)benzylidene sorbitol (EC Chemical: EC-4) was added was supplied to an extruder equipped with a T-shaped die, and the first
It is extruded from a die corresponding to the cross-sectional shape shown in the figure, and compressed air is supplied to the hollow part from the core metal of the die, and the upper and lower liner parts 2.3 are cooled while being in contact with vacuum homers installed above and below. In this way, a synthetic resin cardboard-like article 1 was produced. The resulting synthetic resin corrugated material 1 has a thickness of 2704 mm for the upper and lower liner portions 2 and 3, and a thickness of 21 mm for the rib portion 4.
0//Jl.
全体厚みｔが４＋ｎ、リブ間隔（が５ ｍｍの寸法形状
のものである。The overall thickness t is 4+n, and the rib spacing is 5 mm.
得られた段ボール状物１の透明性を検討するため次の方
法で光線透過率を測定した。In order to examine the transparency of the obtained cardboard-like article 1, the light transmittance was measured by the following method.
測色色差計（日本重色工業製： ＮＤ−ＩＶ型）にて、
２３℃の雰囲気中で全光線透過率（Ｔｔ ）と拡散光線
透過率（Ｔ ｄ）測定し、これらの値から次式に示す平
行光線透過率（Ｔｐ ）および曇り価を計算して求めた
。Using a colorimeter (manufactured by Nippon Heavy Industries, Ltd.: ND-IV type),
Total light transmittance (Tt) and diffuse light transmittance (Td) were measured in an atmosphere at 23°C, and from these values, parallel light transmittance (Tp) and haze value were calculated using the following formulas.
平行光線透過率（Ｔｐ ）−Ｔｔ −Ｔｄ曇り価 −（
Ｔｄ ／Ｔｔ ）
本実施例のサンプルは、全光線透過率６８．６％、平行
光線透過率３０％で、後述する比較例１のこれらの値よ
り格段に高い透過率を示し、曇り価は小さいものであり
、透明性に優れている。Parallel light transmittance (Tp) - Tt - Td haze value - (
Td /Tt) The sample of this example has a total light transmittance of 68.6% and a parallel light transmittance of 30%, which are much higher transmittances than those of Comparative Example 1 described later, and the haze value is small. It has excellent transparency.
一方、機械的物性としてＪＩＳＰ−８１３４法に準拠し
た衝撃試験（バンクチャーテスト）を５０ Ｘ ５０
ｍｍの試験片で行なったところ、長手方向（リブと平行
方向）で９０ｋｇ−ｃｎ、幅方向で１００ｋｇ−（至）
の値であり、比較例１の従来品よりは劣っているが、機
械的強度を要せず、透明性を主として要求されるものに
は実用上問題はない。On the other hand, for mechanical properties, an impact test (buncture test) based on the JISP-8134 method was conducted at 50 x 50
When tested on a mm test piece, it was 90 kg-cn in the longitudinal direction (parallel to the ribs) and 100 kg-cn in the width direction.
Although this value is inferior to that of the conventional product of Comparative Example 1, there is no problem in practical use for products that do not require mechanical strength and primarily require transparency.
実施例２，３゜
前記実施例１と同一の樹脂原料と核剤を同一比率で混合
添加したものに、さらにエチレン−プロピレン−ブテン
ラバー（三井石油化学製：タフマー）を３．５重量％添
加したもの（実施例２）および７６５重量％添加して（
実施例３）、実施例１と同様にして合成樹脂製段ボール
状物を得た。Examples 2 and 3゜To the same resin raw material and nucleating agent as in Example 1 mixed and added in the same ratio, 3.5% by weight of ethylene-propylene-butene rubber (Mitsui Petrochemical Co., Ltd.: Tafmer) was added. (Example 2) and with addition of 765% by weight (
Example 3) A synthetic resin corrugated material was obtained in the same manner as in Example 1.
これらのものは、光学特性に優れるとともに、機械的物
性においても、比較例の従来品に近い物性のものである
。These materials have excellent optical properties and mechanical properties that are close to those of the conventional comparative example.
実施例４．５゜
エチレン成分含有率が３％のプロピレン−エチレンラン
ダムコポリマー（宇部興産製：Ｂ５０１Ｈ）に核剤とし
て実施例１〜３に使用した１、３（Ｐ−クロル）２．４
ＣＰ−メチル）ベンジリデンソルビトールを０．２％
添加したもの（実施例４）、これに替えてベンジリデン
ソルビトール（ＥＣ化学製： ＥＣ−１）を０．２％添
加したもの（実施例５）を原料として、前記実施例と同
様にして合成樹脂製段ボール状物を得た。Example 4.5゜1,3 (P-chlor) 2.4 used in Examples 1 to 3 as a nucleating agent in a propylene-ethylene random copolymer (manufactured by Ube Industries: B501H) with an ethylene content of 3%
CP-methyl)benzylidene sorbitol 0.2%
Synthetic resin was prepared in the same manner as in the previous example using the added material (Example 4) and the material to which 0.2% benzylidene sorbitol (EC Chemical: EC-1) was added (Example 5) as raw materials. A cardboard-like product was obtained.
光学特性は実施例５のものは、実施例４および他の実施
例よりは劣るが、比較例１の従来品よりは優れており、
透明性が要求される用途には実用できる。The optical properties of Example 5 are inferior to Example 4 and other examples, but are superior to the conventional product of Comparative Example 1.
It can be put to practical use in applications that require transparency.
実施例６゜
ポリプロピレンホモポリマー（宇部興産製Ｂ１０１Ｈ）
８７％、とプロピレン−エチレンランダムコポリマー（
同社製８３０１Ｈ）１３％と°を混合してエチレン成分
含有率を０．５重量％とし、これに実施例１と同一の核
剤を同量添加して合成樹脂製段ボール状物を得た。Example 6 Polypropylene homopolymer (B101H manufactured by Ube Industries)
87%, and propylene-ethylene random copolymer (
8301H) (manufactured by the same company) was mixed to make the ethylene component content 0.5% by weight, and the same amount of the same nucleating agent as in Example 1 was added thereto to obtain a synthetic resin corrugated material.
比較例１゜
７、Ｃ１量％のエチレン成分を含むプロピレン−エチレ
ンブロックコポリマー宇部興産製：ＲＥ２Ｏ３）を原料
として、実施例と同様にして合成樹脂製段ボール状物を
得た。Comparative Example 1 Using a propylene-ethylene block copolymer (manufactured by Ube Industries, Ltd.: RE2O3) containing an ethylene component of 1.7°C and 1% by weight as a raw material, a synthetic resin corrugated board was obtained in the same manner as in the example.
この段ボール状物の全光線透過率は５５．５％、平行光
線透過率６．２％、曇り価８８．８％で透明性に劣るも
のである。This cardboard-like material had a total light transmittance of 55.5%, a parallel light transmittance of 6.2%, and a haze value of 88.8%, indicating poor transparency.
比較例２゜
比較例１の原料に実施例１と同一の核剤を同量添加して
、合成樹脂製段ボール状物を得た。このものは、光学特
性として例えば、平行光線透過率は１２．６％で実施例
のものと比較すると透明性に劣っている。Comparative Example 2 The same amount of the same nucleating agent as in Example 1 was added to the raw material of Comparative Example 1 to obtain a synthetic resin corrugated material. As for optical properties, this material has, for example, a parallel light transmittance of 12.6%, which is inferior in transparency compared to that of the example.
・なおポリプロピレンホモポリマーのみを使用する場合
は低温衝撃性に劣る。・If only polypropylene homopolymer is used, low-temperature impact resistance will be poor.
・上記実施例１〜５および比較例１〜２についての物性
をまとめて第１表に示す。- The physical properties of Examples 1 to 5 and Comparative Examples 1 to 2 are summarized in Table 1.
０表中曲げ強度は、長手方向（リブと平行方向）および
幅方向についてそれぞれ１００ Ｘ ２５ ｍｍの試験
片を採取し、定速荷重型の試験機（島津製作所製ニオー
トゲラフ）により支点間距離５０ ｍ＋ｓ曲げ速度１０
ｍｍ／分で曲げ試験を行ない、曲げ強度（ｋｇ ／ ｃ
ｍ ）を求めたものである。For the bending strength in Table 0, test pieces of 100 x 25 mm were taken in the longitudinal direction (parallel to the ribs) and the width direction, respectively, and the distance between the supports was 50 m + s using a constant speed loading type testing machine (Niotogelaf manufactured by Shimadzu Corporation). Bending speed 10
Perform the bending test at mm/min and calculate the bending strength (kg/c
m) was calculated.
（発明の効果）
以上、実施例によって詳細に説明したように本発明の合
成樹脂製段ボール状物は、従来のものに比較して透明性
に優れているので、内容物の視認性が要求されるケース
の製由材あるいは、雪囲い、畜舎の断熱保温材などとし
て透明性が要求される用途に実用できる。(Effects of the Invention) As described above in detail through Examples, the synthetic resin corrugated cardboard of the present invention has superior transparency compared to conventional ones, so visibility of the contents is required. It can be put to practical use in applications that require transparency, such as material for making cases, snow pens, and heat-insulating materials for livestock barns.
第１図は、本発明の合成樹脂製段ボール状物の一例を示
す斜視図。
１・・・・・・合成樹脂製段ボール状物２．３・・・・
・・ライナー部
４・・・・・・リブ
特許出願人 宇部日東化成株式会社代 理
人 弁理士 −色 健 軸向
弁理士 松 本 雅利第１図FIG. 1 is a perspective view showing an example of a synthetic resin corrugated article of the present invention. 1...Synthetic resin cardboard-like material 2.3...
...Liner part 4 ...Rib patent applicant Ube Nitto Kasei Co., Ltd. Agent
People Patent Attorney - Color Ken Axis
Patent Attorney Masatoshi Matsumoto Figure 1
Claims (2)
ー部と、このライナー部間を長手方向に平行に仕切る多
数のリブとを備え、且つ、このリブと前記ライナー部と
が合成樹脂原料を一体に押出して成形される段ボール状
物において、 前記合成樹脂原料はプロピレン−エチレンランダムコポ
リマー単独あるいはポリプロピレンとプロピレン−エチ
レンランダムコポリマーとを混合した混合物を主材とし
、この主材に所定量の核剤を添加したものであって、前
記主材中のエチレン成分を０．５〜７重量％とし、且つ
、前記核剤を一般式 ▲数式、化学式、表等があります▼ （式中Ｒ＿１及びＲ＿２はハロゲン又はアルキル基）で
表わされるベンジリデンソルビトール系のものとなすこ
とを特徴とする透明性を有する合成樹脂製段ボール状物
。(1) A pair of liner parts arranged vertically in parallel at intervals, and a large number of ribs partitioning the liner parts in parallel in the longitudinal direction, and the ribs and the liner part are made of synthetic resin raw material. The synthetic resin raw material is a propylene-ethylene random copolymer alone or a mixture of polypropylene and propylene-ethylene random copolymer as the main material, and a predetermined amount of nuclei is added to this main material. The nucleating agent has a general formula ▲ mathematical formula, chemical formula, table, etc. ▼ (in the formula R_1 and R_2 1. A transparent corrugated board made of synthetic resin, characterized in that it is made of benzylidene sorbitol (halogen or alkyl group).
ンゴム成分を所定量添加することを特徴とする特許請求
の範囲第１項記載の透明性を有する合成樹脂製段ボール
状物。(2) The transparent synthetic resin corrugated material according to claim 1, wherein a predetermined amount of an ethylene-propylene rubber component is further added to the synthetic resin raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32982787A JPH01172441A (en) | 1987-12-28 | 1987-12-28 | Corrugated board-like synthetic resin object having transparency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32982787A JPH01172441A (en) | 1987-12-28 | 1987-12-28 | Corrugated board-like synthetic resin object having transparency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01172441A true JPH01172441A (en) | 1989-07-07 |
Family
ID=18225674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32982787A Pending JPH01172441A (en) | 1987-12-28 | 1987-12-28 | Corrugated board-like synthetic resin object having transparency |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01172441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017002671A1 (en) * | 2015-06-30 | 2017-01-05 | 宇部エクシモ株式会社 | Hollow structural panel and method for producing same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS544947A (en) * | 1977-06-15 | 1979-01-16 | Sumitomo Bakelite Co Ltd | Polypropylene resin composition |
| JPS5645934A (en) * | 1979-09-20 | 1981-04-25 | New Japan Chem Co Ltd | Modification of polypropylene |
| JPS58101136A (en) * | 1981-12-11 | 1983-06-16 | Mitsui Toatsu Chem Inc | Preparation of polypropylene sheet having improved transparency |
| JPS61202825A (en) * | 1985-03-05 | 1986-09-08 | Shikoku Kako Kk | Manufacture of composite |
| JPS62132937A (en) * | 1985-12-05 | 1987-06-16 | Sumitomo Chem Co Ltd | Production of transparent polypropylene sheet |
-
1987
- 1987-12-28 JP JP32982787A patent/JPH01172441A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS544947A (en) * | 1977-06-15 | 1979-01-16 | Sumitomo Bakelite Co Ltd | Polypropylene resin composition |
| JPS5645934A (en) * | 1979-09-20 | 1981-04-25 | New Japan Chem Co Ltd | Modification of polypropylene |
| JPS58101136A (en) * | 1981-12-11 | 1983-06-16 | Mitsui Toatsu Chem Inc | Preparation of polypropylene sheet having improved transparency |
| JPS61202825A (en) * | 1985-03-05 | 1986-09-08 | Shikoku Kako Kk | Manufacture of composite |
| JPS62132937A (en) * | 1985-12-05 | 1987-06-16 | Sumitomo Chem Co Ltd | Production of transparent polypropylene sheet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017002671A1 (en) * | 2015-06-30 | 2017-01-05 | 宇部エクシモ株式会社 | Hollow structural panel and method for producing same |
| JP2017013336A (en) * | 2015-06-30 | 2017-01-19 | 宇部エクシモ株式会社 | Hollow structure plate, and method for manufacturing the same |
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