JPS62243623A - Drawn sheet of styrene resin - Google Patents
Drawn sheet of styrene resinInfo
- Publication number
- JPS62243623A JPS62243623A JP8607586A JP8607586A JPS62243623A JP S62243623 A JPS62243623 A JP S62243623A JP 8607586 A JP8607586 A JP 8607586A JP 8607586 A JP8607586 A JP 8607586A JP S62243623 A JPS62243623 A JP S62243623A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- resin
- styrene resin
- good
- silicon dioxide
- 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
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229920005989 resin Polymers 0.000 title claims abstract description 23
- 239000011347 resin Substances 0.000 title claims abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 11
- 239000011342 resin composition Substances 0.000 claims abstract description 9
- 229920001890 Novodur Polymers 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 4
- 239000011362 coarse particle Substances 0.000 description 4
- 238000005054 agglomeration Methods 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- YMOONIIMQBGTDU-VOTSOKGWSA-N [(e)-2-bromoethenyl]benzene Chemical compound Br\C=C\C1=CC=CC=C1 YMOONIIMQBGTDU-VOTSOKGWSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- SRXJYTZCORKVNA-UHFFFAOYSA-N 1-bromoethenylbenzene Chemical compound BrC(=C)C1=CC=CC=C1 SRXJYTZCORKVNA-UHFFFAOYSA-N 0.000 description 1
- KTZVZZJJVJQZHV-UHFFFAOYSA-N 1-chloro-4-ethenylbenzene Chemical compound ClC1=CC=C(C=C)C=C1 KTZVZZJJVJQZHV-UHFFFAOYSA-N 0.000 description 1
- XHAFIUUYXQFJEW-UHFFFAOYSA-N 1-chloroethenylbenzene Chemical compound ClC(=C)C1=CC=CC=C1 XHAFIUUYXQFJEW-UHFFFAOYSA-N 0.000 description 1
- YMOONIIMQBGTDU-UHFFFAOYSA-N 2-bromoethenylbenzene Chemical class BrC=CC1=CC=CC=C1 YMOONIIMQBGTDU-UHFFFAOYSA-N 0.000 description 1
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical class ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 1
- KBKNKFIRGXQLDB-UHFFFAOYSA-N 2-fluoroethenylbenzene Chemical compound FC=CC1=CC=CC=C1 KBKNKFIRGXQLDB-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 241000251468 Actinopterygii Species 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- SBYMUDUGTIKLCR-VOTSOKGWSA-N [(e)-2-chloroethenyl]benzene Chemical compound Cl\C=C\C1=CC=CC=C1 SBYMUDUGTIKLCR-VOTSOKGWSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 210000000744 eyelid Anatomy 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- -1 penta-substituted chlorostyrenes Chemical class 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、２軸延伸シートとした際、透明性にすぐれ、
かつシリコンオイルの均一塗布性、シートの剥離性およ
び積み重ね成型品の剥離性が良好なスチレン系樹脂延伸
シートに関する。Detailed Description of the Invention (Industrial Application Field) The present invention has excellent transparency when made into a biaxially stretched sheet,
The present invention also relates to a stretched styrenic resin sheet that has good uniform application of silicone oil, good peelability of the sheet, and good peelability of stacked molded products.
（従来の技術）
２軸延伸されたスチレン系樹脂シートは、その透明性お
よび腰の強さから食品包装分野に広く利用されている。(Prior Art) Biaxially stretched styrenic resin sheets are widely used in the food packaging field because of their transparency and stiffness.
しかしこの２軸延伸されたシートはブロッキング性が強
く、また前記シートよ−り得た容器は積み重ねておくと
使用時に剥離し難い欠点を有している。However, this biaxially stretched sheet has a strong blocking property, and containers obtained from the sheet have the drawback that if they are stacked, they are difficult to peel off during use.
この欠点を改良するための方法としては、スチレン系樹
脂＆Ｃ１°ムを添加［、てシートを２軸延伸した際に、
前記ゴムをシート表ｄｋｌＫ突出させてシートの剥離を
良好とすること（特開昭５０−７４６４９号公報）およ
び前記シート表面化シリコンオイルを塗布すること（特
開昭５２−８０８０号公報）が提案されている。As a method to improve this drawback, when the sheet is biaxially stretched by adding styrene resin &C1°,
It has been proposed to make the rubber protrude from the sheet surface dklK to improve the peeling of the sheet (Japanese Unexamined Patent Publication No. 50-74649) and to apply silicone oil to the surface of the sheet (Japanese Unexamined Patent Publication No. 52-8080). ing.
しかしながら、ゴム添加樹脂は、２軸延伸するとゴムが
偏平となるためシート表面への突出される割合が一定と
なり峻く、シートの剥離を良くするためｋはゴム量を多
く添加する必要から透明性の低下を招く恐れを生じたり
、またゴムを多く用いると長期運転中およびリサイクル
品を添加することＫよるヤケからくる異物を生じ、シー
ト外観不良およびシート破断の原因となる欠点がある。However, when rubber-added resin is biaxially stretched, the rubber becomes flat, so the protrusion ratio to the sheet surface is constant and steep, and in order to improve sheet peeling, k needs to be added in a large amount of rubber, resulting in transparency. In addition, if a large amount of rubber is used, foreign matter may be generated during long-term operation or due to discoloration due to the addition of recycled products, resulting in poor sheet appearance and sheet breakage.
さらにゴム量を減少させゴムの粒子径を大きくする例え
ば６〜１０μｍ程度とすることもできるが、この方法で
は２軸延伸シートの表面の肌荒れや光沢低下が生じ、実
用上使用することができない。It is also possible to further reduce the amount of rubber and increase the particle size of the rubber, for example to about 6 to 10 μm, but this method causes roughness and reduced gloss on the surface of the biaxially stretched sheet, making it impractical for practical use.
（発明が解決しようとする問題点）
本発明は、かかる欠点を解決するためスチレン系樹脂と
合成二酸化ケイ素との樹脂組成物を２軸延伸することに
より、合成二酸化ケイ素は延伸時に偏平に引伸ばされな
いためスチレン系樹脂シート表面に微細な凹凸全均一に
生じさせてシリコンオイル塗布性能全向上させ、従来の
熱劣化によるゴムのヤケに起因する外観不良およびシー
ト破断を回避し、さらに延伸シート同志のブロッキング
性を弱め、前記シートを多数枚重ねて打抜いた成型品の
剥離性全向上させたスチレン系樹脂延伸シートを完成す
るに至った。(Problems to be Solved by the Invention) In order to solve these drawbacks, the present invention biaxially stretches a resin composition of styrene resin and synthetic silicon dioxide, so that the synthetic silicon dioxide is not stretched flat during stretching. Therefore, fine irregularities are created uniformly on the surface of the styrene resin sheet, completely improving silicone oil application performance, avoiding appearance defects and sheet breakage caused by conventional heat deterioration due to rubber discoloration, and further improving the appearance of stretched sheets. We have completed a stretched styrene resin sheet that has weakened blocking properties and completely improved the releasability of a molded product made by stacking a large number of the sheets and punching them out.
（問題点を解決するための手段）
すなわち本発明は、透明なスチレン系樹脂と該透明なス
チレン系樹脂中に５０〜５００ ｐｐｍ含有させた平均
粒子径１〜５μｍの合成二酸化ケイ素からなる樹脂組成
物に２軸延伸してなることを特徴とする。(Means for Solving the Problems) That is, the present invention provides a resin composition consisting of a transparent styrene resin and synthetic silicon dioxide having an average particle diameter of 1 to 5 μm and containing 50 to 500 ppm in the transparent styrene resin. It is characterized by being biaxially stretched.
本発明に用いる透明なスチレン系樹脂のスチレン単蓋体
としては、例えば、スチレン、アラルキルスチレン（た
とえば０−ｌｍ−およびｐ−メチルスチレン、−エテル
スチレン、−イソゾロビルスチレン、−ブチルスチレン
、−第６級−ｙ’チルスチレン）、種々のアルファアル
キルスチレン（たトエハメテルスチレン、エチルスチレ
ン）、種々のアルハロスチレン（例えばｏ−ｌｍ−およ
びｐ−クロロスチレン、ブロモスチレン、フルオロスチ
レン）、種々のゾ、トリ、テトラおよびペンタ置換クロ
ロスチレン、ブロモスチレンおよびフルオロスチレンお
よび種々のアルファーおよびベータークロロスチレン（
たとえばアルファクロロスチレン、アルファブロモスチ
レン、ベータークロロスチレンおよびベーターブロモス
チレン）および前記単量体と共重合が可能な例えばアク
リロニトリル、メチルメタアクリレート等である。また
前記透明なスチレン系樹脂の農法は、通常の重合方法で
あれば、何んら制限がない。Examples of the styrene monocap of the transparent styrenic resin used in the present invention include styrene, aralkylstyrene (for example, 0-lm- and p-methylstyrene, -etherstyrene, -isozolobylstyrene, -butylstyrene, - various alpha-alkylstyrenes (e.g., o-lm- and p-chlorostyrene, bromostyrene, fluorostyrene); Zo-, tri-, tetra- and penta-substituted chlorostyrenes, bromostyrenes and fluorostyrenes and various alpha- and beta-chlorostyrenes (
Examples include alpha chlorostyrene, alpha bromostyrene, beta chlorostyrene, beta bromostyrene) and acrylonitrile, methyl methacrylate, etc. which can be copolymerized with the above monomers. Furthermore, there are no restrictions on the agricultural method for producing the transparent styrene resin as long as it is a normal polymerization method.
次に本発明の合成二酸化ケイ素は、ケイ酸ナトリウムと
酸とを反応させることにより生成したものが好ましい。Next, the synthetic silicon dioxide of the present invention is preferably produced by reacting sodium silicate with an acid.
該ケイ素の平均粒子径は、−次粒子がシロキサン結合に
よって三次元的に結合した二次凝集体の状態で１〜５μ
ｍが好ましい。１μｍ未満ではシートに再凝集による分
散不良が生じたり、フィッシュアイができてシート表面
外観不良を起し、また５μｍを越えると、粗大粒子が多
く含まれるので、シート表面外観が損われたり、延伸時
にシート破断を生じるので好まシ、＜ない。The average particle diameter of the silicon is 1 to 5 μm in the form of secondary aggregates in which secondary particles are three-dimensionally bonded through siloxane bonds.
m is preferred. If the diameter is less than 1 μm, poor dispersion may occur in the sheet due to re-agglomeration, or fish eyes may be formed, resulting in poor sheet surface appearance.If the diameter exceeds 5 μm, the sheet surface appearance may be impaired due to the large amount of coarse particles contained, and the sheet surface appearance may be impaired or stretched. This is preferable, as it sometimes causes sheet breakage.
さらに樹脂中に含有される割合は５０〜５００ ｐｐｍ
が好ましく、ｓ ｏ ｐｐｍ未満では、シート表面への
突出割合が少なく、シートブロッキング性を弱くしたり
、該シートから得た成型品の積み重ねによる剥離性が劣
り、また５ ００ ｐｐｍを越えると、二酸化ケイ素の
再凝集を起す機会が多くなり、シートの透明性および外
観の低下、延伸時のシート破Ｉｒ１Ｆｒを生じる欠点が
ある。Furthermore, the proportion contained in the resin is 50 to 500 ppm.
If it is less than 500 ppm, the protrusion ratio to the sheet surface will be small, the sheet blocking property will be weakened, and the peelability when stacking molded products obtained from the sheet will be poor, and if it exceeds 500 ppm, carbon dioxide There is a disadvantage that silicon re-agglomeration occurs more often, resulting in a decrease in the transparency and appearance of the sheet, and sheet breakage during stretching.
また本発明の樹脂組成物は必要に応じて、滑剤、可塑剤
、着色剤等の添加剤を用いることができる。Further, the resin composition of the present invention may contain additives such as a lubricant, a plasticizer, and a coloring agent, if necessary.
本発明の延伸シート用としての樹脂組成物は、透明なス
チレン系樹脂と合成二酸化ケイ素とをヘンシェルミキサ
ー、■プレンダー等でトライブレンドしてもよく、また
合成二酸化ケイ素を多量に含んだ樹脂組成物のマスター
ペレット’を作り、来光てん剤の透明なスチレン系樹脂
と混合する方法等いずれの方法でもよい。The resin composition for the stretched sheet of the present invention may be obtained by tri-blending a transparent styrene resin and synthetic silicon dioxide using a Henschel mixer, a blender, etc., or a resin composition containing a large amount of synthetic silicon dioxide. Any method may be used, such as making a master pellet and mixing it with the transparent styrene resin of the resin.
また本発明のスチレン系樹脂延伸シートはその表面にオ
ストワル）’粘＆ （２０℃）が１００〜２００．００
０センチストークスの構造式８式％
するシリコンオイル単独および乳化剤を含有したエマル
ジョンを単独または、防曇剤、帯電防止剤等と併用して
均一に塗布することができる。また、シリコンオイルの
塗布量は、手にべたつきが感じられない程度、１０〜１
５０■／ｍ２の範囲である。In addition, the styrene resin stretched sheet of the present invention has a surface with a viscosity of 100 to 200.00 at 20°C.
0 centistoke structural formula 8% Silicone oil alone and an emulsion containing an emulsifier can be uniformly applied alone or in combination with an antifogging agent, an antistatic agent, etc. Also, the amount of silicone oil applied should be 10 to 1, so that it does not feel sticky on your hands.
It is in the range of 50 μ/m2.
（実施例）
以下実施例により本発明の詳細な説明する。なお平均粒
子径の測定方法は、コールタ−カウンター法による５０
係体積平均粒子径である。(Examples) The present invention will be explained in detail below using examples. The average particle diameter was measured using the Coulter counter method.
It is the coefficient volume average particle diameter.
実施例１〜６
透明なスチレン系樹脂中に表に示すとおりの景および平
均粒子径の合成二酸化ケイ素（富士デビンン（株）、商
品名「サイロイケ」）を混入した樹脂組成物を押出機か
らシート状に押出【１、タテおよびヨコに２．５倍延伸
して１５０μｍの２軸延伸シートを得た。次に前記延伸
シートの表面にシリコーンオイルを５０■／ｒｒＬ２と
なるように塗布した。Examples 1 to 6 A resin composition in which synthetic silicon dioxide (manufactured by Fuji Devin Co., Ltd., trade name "Siroike") having the appearance and average particle diameter as shown in the table was mixed into a transparent styrene resin was produced into a sheet from an extruder. The sheet was extruded into a shape [1] and stretched 2.5 times vertically and horizontally to obtain a biaxially stretched sheet of 150 μm. Next, silicone oil was applied to the surface of the stretched sheet at a rate of 50 cm/rrL2.
特性を測定した結果は、表に示すとおり良好な結果であ
った。The results of measuring the characteristics were good as shown in the table.
比較例１〜２
合成二酸化ケイ素の景および平均粒子径を表忙示ｌまた
以外は、実施例１と同様に操作した。特性の結果を表に
示す。特性評価欄に示すとおり、粒子径が大きい場合に
は透明性が劣り、また粗大粒子の数が多くシート外観の
悪いシートであった。Comparative Examples 1 and 2 The procedure of Example 1 was repeated except that the appearance and average particle size of the synthetic silicon dioxide were not specified. The results of the characteristics are shown in the table. As shown in the characteristics evaluation column, when the particle size was large, the transparency was poor, and the sheet had a poor appearance due to a large number of coarse particles.
また粒子の小さい場合には、分散不良の二次凝集に基つ
く粗大粒子が散在し、同様に外観の悪いシートであった
。In addition, when the particles were small, coarse particles based on poorly dispersed secondary agglomeration were scattered, and the sheet similarly had a poor appearance.
比較例６へ５
透明なスチレン樹脂に表に示す平均粒子径とゴム分換算
のスチレングラフトゴムを混合した以外は実施例１と同
様に操作した。その結果表に示すとおり、特性値のすべ
てを満足するものは得られていない。To Comparative Example 6 5 The same procedure as in Example 1 was carried out except that the transparent styrene resin was mixed with the styrene graft rubber having the average particle diameter shown in the table and in terms of rubber content. As shown in the result table, no material satisfying all of the characteristic values was obtained.
なお表に示す特性評価方法は次のとおりである。The characteristics evaluation method shown in the table is as follows.
１． シートの剥離性、ＡＳＴＭ−Ｄ−１８９４に進拠
◎（良好） ： ０．３５以下
り（良）：０．３５超〜０．４０
へ（ＪＰＪＰ良）：０．４０超〜０．４５×（不良）
二 ０．４５超
２、透明性、日本定色ｆＡＮＯＨ−２Ｄ〜度計でシート
厚１５０μｍ規準で船り度全曲１定［、た。1. Peelability of sheet, based on ASTM-D-1894 ◎ (Good): Below 0.35 (Good): Over 0.35 to 0.40 (JPJP Good): Over 0.40 to 0.45× (Bad)
2 Over 0.45 2, transparency, Japanese standard color fANOH-2D~Degree with a sheet thickness of 150 μm standard, all songs 1 constant [,ta].
◎（良好） ： ［１，Ｓ係以下
○ （良 ） 二 〇、５ｊ坏う；１〜
１．０５曙；△（やや良）：１．０超〜１．５幅
×（不良） ： １，５％超
３、 シート表面の突起数、東京精密製の二次元表面粗
さ計により２０ｃｒＩｔ長さ中の０．１〜１μｍの突起
数を測定し、た。◎ (Good): [1, S section and below ○ (Good) 20, 5j; 1~
1.05 Akebono; △ (slightly good): more than 1.0 to 1.5 width x (defective): more than 1.5% 3, number of protrusions on the sheet surface, 20crIt by Tokyo Seimitsu's two-dimensional surface roughness meter The number of protrusions of 0.1 to 1 μm in length was measured.
Ｏ（良好） ： ｉｓｉ個以上
■（良）：１０１〜１５０個
△（やや艮）＝ ５１〜１００個
×（不良） ＝ ５０個以下
４、粗大粒子の数、２５ｃｍ角シート中に含まれるφ１
龍以上の大きさのフィッシュアイ数を目視で測定した。O (good): isi pieces or more ■ (good): 101 to 150 pieces △ (slightly poor) = 51 to 100 pieces × (bad) = 50 pieces or less 4, number of coarse particles, φ1 contained in a 25 cm square sheet
The number of fisheyes larger than a dragon was visually measured.
◎（良好） 二 ０〜１個
○（良） ： ２〜４個
△（やや良）： ５〜７個
×（不良） 二 ８個以上
５、 シリコンオイルマーク、シートを２枚重ね合せた
時に生ずる、地図模様の面積（１００区画）を目視によ
り測定した。◎ (good) 2 0-1 pieces ○ (good): 2-4 pieces △ (slightly good): 5-7 pieces × (bad) 2 8 or more pieces 5, silicone oil mark, when two sheets are stacked The area of the resulting map pattern (100 sections) was visually measured.
◎（良好） ： ５優以下
○（良） ： ５超〜２５チ
△（やや良）＝ ２５超〜５０％
×（不良） ： ５０係超
６、 フイシュアイ中の樹脂ヤケの数
φ０．２ｎ以上のアイシュアイに占める樹脂ヤケ（着色
、コンタミも含む）を５０倍ルーペにて目視判断で判定
した。◎ (Good): 5 Excellent or less ○ (Good): More than 5 to 25 △ (Slightly Good) = More than 25 to 50% Resin discoloration (including coloring and contamination) in the eyelid was determined visually using a 50x magnifying glass.
◎（良好） ： ５％以下
○（良） ＝ ５超〜２５％
Δ（やや良）： ２５超〜５０俤
×（不良） ： ５０憾超
（発明の効果）
以上のとおり本発明のスチレン系樹脂延伸シートは、シ
ート表面に微細な凹凸が均一にできるのでシリコンオイ
ル塗布が均一化となり、しかも従来のゴムの熱劣化によ
る異物混入からくる外観およびシート破断が回避でき、
さらに延伸シート同志のブロッキング性を弱め、かつ成
型品の積み重ねによる剥離性が良好である特徴を有する
ものである。◎ (Good): 5% or less ○ (Good) = More than 5 to 25% Δ (Slightly good): More than 25 to 50 × (Bad): More than 50 (Effect of the invention) As described above, the styrene type of the present invention Stretched resin sheets have even minute irregularities on the sheet surface, making it possible to apply silicone oil evenly, and avoiding the appearance and sheet breakage caused by foreign matter contamination due to heat deterioration of conventional rubber.
Furthermore, it has the characteristics of weakening the blocking property between stretched sheets and having good peelability when stacking molded products.
Claims (1)
０〜５００ｐｐｍ含有させた平均粒子径１〜５μｍの合
成二酸化ケイ素からなる樹脂組成物を２軸延伸してなる
ことを特徴とするスチレン系樹脂延伸シート。A transparent styrene resin and 5 in the transparent styrenic resin.
A stretched styrenic resin sheet, characterized in that it is formed by biaxially stretching a resin composition made of synthetic silicon dioxide containing 0 to 500 ppm and having an average particle diameter of 1 to 5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61086075A JPH06856B2 (en) | 1986-04-16 | 1986-04-16 | Styrenic resin stretch sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61086075A JPH06856B2 (en) | 1986-04-16 | 1986-04-16 | Styrenic resin stretch sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62243623A true JPS62243623A (en) | 1987-10-24 |
| JPH06856B2 JPH06856B2 (en) | 1994-01-05 |
Family
ID=13876582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61086075A Expired - Fee Related JPH06856B2 (en) | 1986-04-16 | 1986-04-16 | Styrenic resin stretch sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06856B2 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4921100A (en) * | 1972-06-16 | 1974-02-25 | ||
| JPS528080A (en) * | 1975-07-09 | 1977-01-21 | Asahi Dow Ltd | Method of manufacturing stylene system resin sheet |
| JPS52130852A (en) * | 1976-04-27 | 1977-11-02 | Denki Kagaku Kogyo Kk | Resin compositions |
| JPS5852820A (en) * | 1981-09-24 | 1983-03-29 | Nec Corp | Manufacture of semiconductor device |
| JPS5898222A (en) * | 1981-12-07 | 1983-06-11 | Denki Kagaku Kogyo Kk | Biaxially stretched sheet of styrene resin |
| JPS59164345A (en) * | 1983-03-09 | 1984-09-17 | Nissan Chem Ind Ltd | Resin composition containing ultrafine silicic acid powder |
| JPH06855A (en) * | 1992-06-18 | 1994-01-11 | Sumitomo Jukikai Plast Mach Kk | Molding condition setting device |
-
1986
- 1986-04-16 JP JP61086075A patent/JPH06856B2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4921100A (en) * | 1972-06-16 | 1974-02-25 | ||
| JPS528080A (en) * | 1975-07-09 | 1977-01-21 | Asahi Dow Ltd | Method of manufacturing stylene system resin sheet |
| JPS52130852A (en) * | 1976-04-27 | 1977-11-02 | Denki Kagaku Kogyo Kk | Resin compositions |
| JPS5852820A (en) * | 1981-09-24 | 1983-03-29 | Nec Corp | Manufacture of semiconductor device |
| JPS5898222A (en) * | 1981-12-07 | 1983-06-11 | Denki Kagaku Kogyo Kk | Biaxially stretched sheet of styrene resin |
| JPS59164345A (en) * | 1983-03-09 | 1984-09-17 | Nissan Chem Ind Ltd | Resin composition containing ultrafine silicic acid powder |
| JPH06855A (en) * | 1992-06-18 | 1994-01-11 | Sumitomo Jukikai Plast Mach Kk | Molding condition setting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06856B2 (en) | 1994-01-05 |
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|---|---|---|---|
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