JPH04180957A - Polyethylene terephthalate resin composition, sheet and molding - Google Patents
Polyethylene terephthalate resin composition, sheet and moldingInfo
- Publication number
- JPH04180957A JPH04180957A JP30711790A JP30711790A JPH04180957A JP H04180957 A JPH04180957 A JP H04180957A JP 30711790 A JP30711790 A JP 30711790A JP 30711790 A JP30711790 A JP 30711790A JP H04180957 A JPH04180957 A JP H04180957A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- talc
- molding
- polyethylene terephthalate
- resin composition
- 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
- 229920000139 polyethylene terephthalate Polymers 0.000 title claims abstract description 32
- 239000005020 polyethylene terephthalate Substances 0.000 title claims abstract description 32
- -1 Polyethylene terephthalate Polymers 0.000 title claims abstract description 12
- 239000011342 resin composition Substances 0.000 title claims description 18
- 238000000465 moulding Methods 0.000 title abstract description 10
- 239000000454 talc Substances 0.000 claims abstract description 47
- 229910052623 talc Inorganic materials 0.000 claims abstract description 47
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- 239000010410 layer Substances 0.000 claims abstract description 27
- 239000012792 core layer Substances 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 12
- 238000003856 thermoforming Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000011164 primary particle Substances 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 238000010411 cooking Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- 101100348017 Drosophila melanogaster Nazo gene Proteins 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- SXCBDZAEHILGLM-UHFFFAOYSA-N heptane-1,7-diol Chemical compound OCCCCCCCO SXCBDZAEHILGLM-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- DFFZOPXDTCDZDP-UHFFFAOYSA-N naphthalene-1,5-dicarboxylic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=CC2=C1C(O)=O DFFZOPXDTCDZDP-UHFFFAOYSA-N 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 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、主に食品や玩具あるいは電気部品の包装容器
、ブリスターパック等に用いられる、透明性、スリップ
性及びスクッキング性に優れたポリエチレンテレフタレ
ート樹脂組成物、シート及び成形品に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to polyethylene that has excellent transparency, slip properties, and cooking properties, and is used mainly for packaging containers for foods, toys, electrical parts, blister packs, etc. This invention relates to terephthalate resin compositions, sheets, and molded products.
（従来の技術）
ポリエチレンテレフタレート樹脂シート（以下ポリエス
テルシートという）を成形した容器は、特に透明性、機
械的性能及び食品衛生性に優れ食品や玩具あるいは電気
部品の包装容器、ブリスターパック等にポリスチレン樹
脂製や塩化ビニル樹脂製の成形品と共に使用されている
。(Prior art) Containers molded from polyethylene terephthalate resin sheets (hereinafter referred to as polyester sheets) have excellent transparency, mechanical performance, and food hygiene, and polystyrene resin is used for packaging containers for foods, toys, electrical parts, blister packs, etc. It is used together with molded products made of polyvinyl chloride and vinyl chloride resin.
然るにポリエステルシートの表面は、平滑で透明性に優
れているが、その反面滑り性が悪く、シートを押出成形
する際には、ロールへの巻きずれが発生し易く、特に０
．５鶴以下の薄物においては良好なロールシートが得ら
れ難い。However, although the surface of a polyester sheet is smooth and has excellent transparency, on the other hand, it has poor slip properties, and when extrusion molding the sheet, it is easy to roll it out of roll.
．． It is difficult to obtain a good roll sheet for thin materials of 5 cranes or less.
さらにこのシートを熱成形して得られた成形品は、積み
重ねした際に成形品が一枚ずつ剥がれ難いというスクッ
キング性の問題がある。Furthermore, the molded products obtained by thermoforming these sheets have a problem of cooking properties, such as difficulty in peeling off the molded products one by one when stacked.
従来からこれらの問題を解決する手段としては、有機系
の滑剤・可塑剤を内部に練り込む方法やシリコンオイル
等潤滑剤をシートあるいは成形品の表面に塗布する方法
が知られている。Conventionally, methods for solving these problems include methods of kneading organic lubricants and plasticizers into the interior, and methods of applying a lubricant such as silicone oil to the surface of the sheet or molded product.
（発明が解決しようとする課！り
しかしながら、前者の方法では成形加熱時にポリエステ
ル樹脂の結晶化を促進することにより、得られた成形品
の透明性を著しく低下させたり、加工途中で滑剤・可塑
剤が蒸発揮散して成形品でのスクッキング性の効果が低
下し有効ではない。(This is a problem that the invention aims to solve!) However, the former method promotes crystallization of the polyester resin during heating during molding, significantly reducing the transparency of the resulting molded product, and adding lubricants and plasticizers during processing. The agent evaporates and evaporates, reducing the effect of cooking properties on molded products, making it ineffective.
また、後者の方法は成形加工後の処理のため安定したス
リップ性、スクッキング性が得られるが、表面の濡れ指
数を下げ印刷適性やシート適性が劣る欠点があり用途が
限定されている。In addition, although the latter method provides stable slipping and scooking properties due to the post-molding process, it has the drawback of lowering the surface wettability index and resulting in poor printability and sheet suitability, which limits its use.
本発明は、このような問題を解決するものであり、ポリ
エチレンテレフタレート樹脂に特定されたタルクを添加
することにより、この樹脂組成物を用いて作製したシー
トは、透明性と機械的強度にすぐれ、しかもシート表面
のスリップ性が良好となり、シート原反の巻きずれもな
（、さらに成形後に積み重ねられた成形品は、スクッキ
ング性と印刷適性に問題が生じないことを見い出し、本
発明を完成するに至った。The present invention solves these problems, and by adding specified talc to polyethylene terephthalate resin, sheets made using this resin composition have excellent transparency and mechanical strength. In addition, the sheet surface has good slip properties, and the original sheet does not roll out of place (Furthermore, the inventors discovered that the stacked molded products after molding do not have problems with scooking properties and printability, and completed the present invention. reached.
（課題を解決するための手段）
すなわち本発明はポリエチレンテレフタレート樹脂と平
均粒子径が１０μｍ以下のタルクを０．０１〜１重量％
含有してなることを特徴とするポリエチレンテレフタレ
ート樹脂組成物、該樹脂組成物を用いたシート及びその
成形品である。(Means for Solving the Problems) That is, the present invention comprises polyethylene terephthalate resin and 0.01 to 1% by weight of talc having an average particle size of 10 μm or less.
A polyethylene terephthalate resin composition, a sheet using the resin composition, and a molded article thereof.
本発明に用いられるポリエチレンテレフタレート樹脂（
以下ＰＥＴ樹脂という）はエチレングリコール、テレフ
タル酸の重縮合によって得られるが、この他、グリコー
ル成分としては、ジエチレングリコール、１．４−テト
ラメチレングリコール、１．４−シクロヘキサンジメタ
ツール、ヘプタメチレングリコールを、ジカルボン酸成
分としては、イソフタル酸、１，５−ナフタレンジカル
ボン酸、アジピン酸等をモノマーとして成分の全量又は
−部を置き換えて使用することもできる。Polyethylene terephthalate resin used in the present invention (
PET resin (hereinafter referred to as PET resin) is obtained by polycondensation of ethylene glycol and terephthalic acid, but other glycol components include diethylene glycol, 1,4-tetramethylene glycol, 1,4-cyclohexane dimetatool, and heptamethylene glycol. As the dicarboxylic acid component, isophthalic acid, 1,5-naphthalene dicarboxylic acid, adipic acid, etc. can be used as a monomer to replace the entire amount or part of the component.
次に、本発明に用いられるタルクは、マグネシウムの含
水ケイ酸塩鉱物でありＭｇ１Ｓｉ４０＋ｏ（ＯＨ）ｚを
主成分として、この他、Ａ ｊ！ ｔＯｘ ＋ ＦｅＯ
＋ Ｍｎ５０４＋ＮａｚＯ、Ｋ、０等不純物として含む
こともできるものであり、さらに表面処理剤が施されて
いるものでも差し支えない、タルクの一次粒子の平均粒
子径は、１０μ園以下であることが好ましく、平均粒子
径がｌθμ園を越えるものでは、タルクを含有したＰＥ
Ｔ樹脂組成物から得られるシート及び成形品の透明性が
低下し好ましくない。Next, the talc used in the present invention is a hydrated magnesium silicate mineral and mainly contains Mg1Si40+o(OH)z, and in addition, Aj! tOx + FeO
+Mn504+NazO, K, 0, etc. can be included as impurities, and it is also possible to apply a surface treatment agent.The average particle diameter of the primary particles of talc is preferably 10 μm or less, If the average particle size exceeds lθμ, PE containing talc is used.
This is undesirable because the transparency of sheets and molded products obtained from the T resin composition decreases.
また、全タルクは全組成物中に０．０１重量％〜１重量
％、好ましくは０．１重量％〜０．５重量％含有するも
のであり、全組成物中への含有量がｏ、ｏｉ重量％未満
では、成形時のシートのスリップ性が不足しシートロー
ルの巻きずれを生じ、さらにシートを熱成形して得られ
た成形品のスクッキング性が低下する。Further, total talc is contained in the total composition in an amount of 0.01% to 1% by weight, preferably 0.1% to 0.5% by weight, and the content in the total composition is o, If the amount is less than oi% by weight, the slip properties of the sheet during molding will be insufficient, resulting in misalignment of the sheet roll, and furthermore, the scukkability of the molded product obtained by thermoforming the sheet will be reduced.
また、１重量％を越えるとＰＥＴ樹脂との均一な分散性
が低下して、得られたシートの透明性が低下し、甚だし
くはブッとして存在し外観上問題があり、さらにシート
を熱成形して得られた成形品に偏肉を生じる原因となる
。Moreover, if it exceeds 1% by weight, the uniform dispersibility with the PET resin will decrease, the transparency of the obtained sheet will decrease, and the sheet will appear too bulky, causing problems in appearance. This will cause uneven thickness in the molded product obtained.
このように、ＰＥＴ樹脂組成物へのタルクの含有量は、
タルクを適当量配合することにより、透明性を損なわず
にスリップ性及びスクッキング性に優れたＰＥＴシート
及びその成形品が得られるが、樹脂組成物へのタルクの
含有量が増加すると透明性の低下をきたす。In this way, the content of talc in the PET resin composition is
By blending an appropriate amount of talc, PET sheets and molded products thereof with excellent slipping and scooking properties can be obtained without impairing transparency, but as the content of talc increases in the resin composition, transparency deteriorates. cause a decline.
シートのスリップ性及び成形品のスクッキング性は、シ
ート及び成形品それぞれの表面部分の性能が関与してお
り、そこでタルク添加の効果をあげるには、シートのタ
ルク高含有部分をコア層に比較してスキン層とした多層
構造とすることが望ましい。The slip properties of the sheet and the scuckability of the molded product are related to the performance of the surface parts of the sheet and the molded product, so in order to increase the effect of adding talc, it is necessary to compare the talc-rich part of the sheet to the core layer. It is desirable to have a multilayer structure with a skin layer.
特に、本発明のシートが、コア層に含有するタルク濃度
がスキン層に含有するタルク濃度の５０％以下である多
層構造にあっては、スキン層：コア層の肉厚比率がｌ：
１〜９の範囲からなるシートが好ましく、シートのスキ
ン層とコア層との溶融粘度差に起因するスキン層が受け
る剪断力は、タルクの結晶配列に影響を与え、シートを
単層構成にてタルクを均一に配合したものに比較して、
シートのスリップ性及び成形品のスクッキング性が向上
する。In particular, when the sheet of the present invention has a multilayer structure in which the talc concentration contained in the core layer is 50% or less of the talc concentration contained in the skin layer, the thickness ratio of the skin layer:core layer is l:
Preferably, the sheet consists of a sheet having a number in the range of 1 to 9, and the shearing force applied to the skin layer due to the difference in melt viscosity between the skin layer and the core layer of the sheet affects the crystal orientation of the talc, and the sheet is formed into a single layer structure. Compared to those that evenly contain talc,
The slip properties of the sheet and the scooking properties of the molded product are improved.
本発明で得られた多層シートにあっては、タルク含有ス
キン層は、コア層の両表面に均等厚みであることが好ま
しいが、コア層の片面であっても差し支えない。In the multilayer sheet obtained by the present invention, the talc-containing skin layer preferably has a uniform thickness on both surfaces of the core layer, but may be on one side of the core layer.
ここで、シート中のコア層に含有するタルク濃度がスキ
ン層に含有するタルク濃度の５０％を越える場合及びス
キン層：コア層の肉厚比率でスキン層の肉厚が１：１を
越えると、シートがより単層に近つくことになるので透
明性の効果は減少し、スキン層：コア層の肉厚比率でス
キン層の肉厚が１：９より未満では、スキン層表面にコ
ア層のタルクが露出を生じ、シート表面の曇り度が増加
すると共に、シートに傷を発生させる。Here, if the talc concentration contained in the core layer in the sheet exceeds 50% of the talc concentration contained in the skin layer, and if the skin layer thickness ratio exceeds 1:1. , since the sheet becomes closer to a single layer, the transparency effect decreases, and if the thickness ratio of the skin layer to the core layer is less than 1:9, the core layer is formed on the surface of the skin layer. of talc is exposed, increasing haze on the sheet surface and causing scratches on the sheet.
本発明の樹脂組成物は、必要に応じて着色剤、酸化防止
剤、熱安定剤及びタルク以外の充填剤等を添加すること
もできる。The resin composition of the present invention may contain colorants, antioxidants, heat stabilizers, fillers other than talc, and the like, if necessary.
本発明のＰＥＴ樹脂とタルクとの混合方法としては、シ
ート成形時に押出機に直接投入する方法、ＰＥＴ樹脂と
タルクとを固体状態に混合した後に押出機にて溶融混練
してペレット化し、シート押出し時に使用する方法、又
はＰＥＴ樹脂にタルクを高充填したマスターバッチベレ
ットを作製しておき、シート作製時にＰＵＴ樹脂で希釈
して使用する方法のいずれであっても差し支えない。Methods for mixing the PET resin and talc of the present invention include a method in which the PET resin and talc are directly charged into an extruder during sheet forming, and a method in which the PET resin and talc are mixed in a solid state, then melt-kneaded in an extruder to form pellets, and then extruded into a sheet. There is no problem with either the method used at times, or the method of preparing a master batch pellet in which PET resin is highly filled with talc and diluting it with PUT resin at the time of sheet production.
（実施例） 以下実施例により本発明をさらに詳細に説明する。(Example) The present invention will be explained in more detail with reference to Examples below.
尚、シート及び成形品の物性測定は、次のように測定し
た。The physical properties of the sheet and molded product were measured as follows.
（１） 透明性、表面曇り度
各実施例、比較例のシート及び成形品から測定用のサン
プルを切り出し、ＪＩＳ Ｋ−６７１８に準拠して測定
した。(1) Transparency and surface haze Samples for measurement were cut out from the sheets and molded products of each example and comparative example, and measured in accordance with JIS K-6718.
（２） 静摩擦係数
各実施例、比較例のシートから測定用のサンプルを切り
出し、ＪＩＳ Ｋ−７１２５に準拠して測定した。(2) Coefficient of Static Friction Samples for measurement were cut out from the sheets of each Example and Comparative Example and measured in accordance with JIS K-7125.
（３） スクッキング性
各実施例、比較例のシートを用いて真空成形機で深さ２
０ｆ１．縦６０鶴、横１２０ｍの成形品を作製した。こ
の各成形品５個を積み重ねた上に、１ ｋｇの荷重を１
分間かけた後の各成形品の引き剥がし易さを下記に基準
で測定した。(3) Cooking properties Using the sheets of each example and comparative example, the sheets were molded to a depth of 2 with a vacuum forming machine.
0f1. A molded product with a length of 60 cranes and a width of 120 m was produced. Five of each of these molded products are stacked, and a load of 1 kg is applied to the
The ease with which each molded article was peeled off after being applied for a minute was measured based on the following criteria.
○：成形品１個ずつが自重で剥がれる。○: Each molded product peels off under its own weight.
Δ：成形品１個ずつが手で容易に剥がれる。Δ: Each molded product can be easily peeled off by hand.
×：成形品１個ずつが手で剥がれ難い。×: Each molded product is difficult to peel off by hand.
実施例１〜４、比較例１〜３
結晶化装置付脱湿乾燥機にて予め水分量を５０ｐｐｍ以
下としたＰＥＴ樹脂（イーストマンコダック社製、商品
名ＰＥ７９９０２）と平均粒子径５μｍのタルクとを表
−１に示す割合にて混合した。Examples 1 to 4, Comparative Examples 1 to 3 PET resin (manufactured by Eastman Kodak Company, trade name PE79902) whose water content was reduced to 50 ppm or less in a dehumidifying dryer with a crystallization device and talc with an average particle size of 5 μm were mixed in the proportions shown in Table-1.
それぞれの樹脂組成物を４０ｔｍ押出機にて押出温度２
６０〜２８０℃の範囲で溶融し、Ｔダイで０．４■厚の
迅明シートを作製し、さらに該シートを真空成形機で成
形品を作製した後、それぞれの物性を測定した。測定結
果を表−１に示す。Each resin composition was extruded using a 40tm extruder at a temperature of 2.
The material was melted at a temperature of 60 to 280° C., a 0.4-inch thick sheet was produced using a T-die, and the sheet was further molded into a molded product using a vacuum forming machine, and the physical properties of each product were measured. The measurement results are shown in Table-1.
ＰＥＴ樹脂単味及びタルク含有量が０．００５重量％で
は、スリップ性及びスクッキング性が劣り、タルク含有
量が１．５重量％では透明性が低下する。When the PET resin alone and the talc content is 0.005% by weight, slip properties and scooking properties are poor, and when the talc content is 1.5% by weight, transparency is reduced.
実施例５〜７、比較例４〜５
結晶化装置付脱湿乾燥機にて予め水分量を５０ｐｐｍ以
下としたＰＥＴ樹脂（イーストマンコダック社製、商品
名ＰＥ７９９２１Ｗ）に表−２に示す各平均粒子径のタ
ルクをタルク含有量が０゜３重量％となるように混合し
た。Examples 5 to 7, Comparative Examples 4 to 5 Each average shown in Table 2 was applied to PET resin (manufactured by Eastman Kodak Company, trade name PE79921W) whose water content was reduced to 50 ppm or less in a dehumidifying dryer with a crystallizer. Talc having a particle size was mixed so that the talc content was 0.3% by weight.
それぞれの樹脂組成物を、実施例１と同様な方法にてシ
ート及び成形品を作製した後、物性を測定した。測定結
果を表−２に示す。After producing sheets and molded products from each resin composition in the same manner as in Example 1, the physical properties were measured. The measurement results are shown in Table-2.
ＰＥＴ樹脂単味ではスクッキング性が劣り、タルクの平
均粒子径が１５μｍを越えると透明性が低下する。PET resin alone has poor scukkability, and when the average particle size of talc exceeds 15 μm, transparency decreases.
実施例８〜１０、比較例６〜９
結晶化装置付脱湿乾燥機にて予め水分量を５０ｐｐ−以
下としたＰＥＴ樹脂（イーストマンコダック社製、商品
名ＰＥＴ ９’１２１Ｗ）に平均粒子径５μｍのタルク
をタルク含有量が０．５重量％となるように混合した樹
脂組成物をスキン層とし、同様に結晶化装置付脱湿乾燥
機にて予め水分量を５０ｐｐ−以下としたＰＥＴ樹脂（
イーストマンコダック社製、商品名ＰＥ７９９２１Ｗ）
をコア層として、４０ｗｍ押出機２台と２種３層のフィ
ードブロックを使用して表−３に示すスキン層；コア層
の比率の０．４ ｍ厚の２種３層シートを作製し、つい
で実施例１と同様に製品を作製した後、物性を測定した
。測定結果を表−３に示す。Examples 8 to 10, Comparative Examples 6 to 9 PET resin (manufactured by Eastman Kodak Company, trade name: PET 9'121W) whose moisture content had been reduced to 50 pp- or less in a dehumidifying dryer with a crystallizer was coated with an average particle size. A skin layer is made of a resin composition in which talc of 5 μm is mixed so that the talc content is 0.5% by weight, and a PET resin whose water content is made to be 50 pp- or less in advance in a dehumidifying dryer with a crystallization device. (
Manufactured by Eastman Kodak Company, product name PE79921W)
As a core layer, a two-type three-layer sheet with a skin layer to core layer ratio of 0.4 m shown in Table 3 was prepared using two 40wm extruders and a two-type three-layer feed block, Next, a product was produced in the same manner as in Example 1, and its physical properties were measured. The measurement results are shown in Table 3.
タルク含有単層系に比較してスキン層：コア層の肉厚比
率をｌ：１〜９とした３層構造とすることにより透明性
及びスクッキング性がさらに優れる。Compared to a talc-containing single-layer system, the three-layer structure with a skin layer:core layer thickness ratio of 1:1 to 9 provides even better transparency and scukkability.
実施例１１〜１３、比較例１０
結晶化装置付脱湿乾燥機にて予め水分量を５０ｐｐｍ以
下としたＰＥＴ樹脂（イーストマンコダック社製、商品
名ＰＥＴ ９９２１１１１）に平均粒子径５μｍのタル
クをタルク含有量が０．５重量％となるように混合した
樹脂組成物をスキン層とし、同様に結晶化装置付脱湿乾
燥機にて予め水分量を５９ｐｐｍ以下としたＰＥＴ樹脂
（イーストマンコダック社製、商品名ＰＥＴ９９２１Ｗ
）に平均粒子径５μｍのタルクを表−４に示す各タルク
含有量となるように混合した樹脂組成物をコア層として
、４０ｍ押出機２台と２種３層のフィードブロックを使
用してスキン層：コア層の肉厚比率が１：２の０．４Ｍ
厚の２種３層シートを作製し、ついで実施例１と同様に
製品を作製した後、物性を測定した。測定結果を表−４
に示す。Examples 11 to 13, Comparative Example 10 Talc with an average particle size of 5 μm was added to PET resin (manufactured by Eastman Kodak Company, trade name: PET 9921111) whose water content had been reduced to 50 ppm or less using a dehumidifying dryer with a crystallizer. A skin layer is made of a resin composition mixed with a content of 0.5% by weight, and a PET resin (manufactured by Eastman Kodak Company) whose moisture content has been reduced to 59 ppm or less in a dehumidifying dryer with a crystallization device is used as a skin layer. , Product name: PET9921W
) was mixed with talc having an average particle diameter of 5 μm so as to have the talc content shown in Table 4. The resin composition was used as a core layer, and the skin was made using two 40 m extruders and a feed block of two types and three layers. Layer: 0.4M with a core layer thickness ratio of 1:2
Three-layer sheets of two different thicknesses were prepared, and then a product was prepared in the same manner as in Example 1, and its physical properties were measured. Table 4 shows the measurement results.
Shown below.
コア層のタルク含有量をスキン層のタルク含有量の５０
％以下とした多層構成系は透明性及びスクッキング性共
に良好であり、５０％を越える多層構成系は共にやや低
下し単層系により近くなる。The talc content of the core layer is 50% of the talc content of the skin layer.
% or less have good transparency and scooking properties, while multilayer systems with a content of more than 50% have both a slight decrease in both and become closer to a single-layer system.
（発明の効果）
以上のとおり本発明は、ＰＥＴ樹脂を主体にシート及び
成形品を作製する際に、特定されたタルクを含有させる
ことにより、ＰＥＴ樹脂本来の透明性を損なうことなく
、良好なスリップ性とスクッキング性を得る効果を有す
るものである。(Effects of the Invention) As described above, the present invention has the advantage that when producing sheets and molded products mainly using PET resin, by incorporating the specified talc, good transparency can be achieved without impairing the original transparency of PET resin. This has the effect of providing slipping and scooking properties.
特許出願人 電気化学工業株式会社Patent applicant: Denki Kagaku Kogyo Co., Ltd.
Claims (1)
０μｍ以下のタルクを０．０１〜１重量％含有してなる
ことを特徴とするポリエチレンテレフタレート樹脂組成
物。 ２、請求項１記載の樹脂組成物からなるシート。 ３、請求項１記載の樹脂組成物をスキン層とし、ポリエ
チレンテレフタレート樹脂をコア層として、該スキン層
：コア層の肉厚比率が１：１〜９からなることを特徴と
する多層シート。 ４、請求項１記載の樹脂組成物からなるスキン層：コア
層の肉厚比率が１：１〜９である多層シートであって、
前記コア層のタルク濃度がスキン層のタルク濃度の５０
％以下であることを特徴とする多層シート。 ５、請求項２、請求項３又は請求項４記載のシートを熱
成形してなる成形品。[Claims] 1. Polyethylene terephthalate resin and an average particle size of 1
A polyethylene terephthalate resin composition containing 0.01 to 1% by weight of talc with a diameter of 0 μm or less. 2. A sheet comprising the resin composition according to claim 1. 3. A multilayer sheet, characterized in that the resin composition according to claim 1 is used as a skin layer, the polyethylene terephthalate resin is used as a core layer, and the thickness ratio of the skin layer to the core layer is 1:1 to 9. 4. A multilayer sheet comprising the resin composition according to claim 1 and having a skin layer:core layer thickness ratio of 1:1 to 9,
The talc concentration of the core layer is 50% of the talc concentration of the skin layer.
% or less. 5. A molded article obtained by thermoforming the sheet according to claim 2, claim 3, or claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2307117A JP3037998B2 (en) | 1990-11-15 | 1990-11-15 | Polyethylene terephthalate resin sheet and molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2307117A JP3037998B2 (en) | 1990-11-15 | 1990-11-15 | Polyethylene terephthalate resin sheet and molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04180957A true JPH04180957A (en) | 1992-06-29 |
| JP3037998B2 JP3037998B2 (en) | 2000-05-08 |
Family
ID=17965235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2307117A Expired - Fee Related JP3037998B2 (en) | 1990-11-15 | 1990-11-15 | Polyethylene terephthalate resin sheet and molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3037998B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6727306B2 (en) | 2000-12-15 | 2004-04-27 | Wellman, Inc. | Polymer resins having reduced frictional properties |
| JP2005163015A (en) * | 2003-10-14 | 2005-06-23 | Toray Plastics (America) Inc | Smooth co-extruded polyester film containing talc and method for producing the same |
| US7759449B2 (en) | 2000-12-15 | 2010-07-20 | Wellman, Inc. | Methods for introducing additives into polyethylene terephthalate |
| FR2944024A1 (en) * | 2009-04-01 | 2010-10-08 | Cgl Pack Service | Thermoformable sheet material comprises amorphous polyethylene terephthalate and talc, and a mineral colorant, where the talc is present in the form of grains having a size of specified range |
-
1990
- 1990-11-15 JP JP2307117A patent/JP3037998B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6727306B2 (en) | 2000-12-15 | 2004-04-27 | Wellman, Inc. | Polymer resins having reduced frictional properties |
| US7759449B2 (en) | 2000-12-15 | 2010-07-20 | Wellman, Inc. | Methods for introducing additives into polyethylene terephthalate |
| US7858731B2 (en) * | 2000-12-15 | 2010-12-28 | Wellman, Inc. | Polyester resins and polyester containers having reduced frictional properties |
| JP2005163015A (en) * | 2003-10-14 | 2005-06-23 | Toray Plastics (America) Inc | Smooth co-extruded polyester film containing talc and method for producing the same |
| JP4732731B2 (en) * | 2003-10-14 | 2011-07-27 | トーレイ プラスティクス（アメリカ），インコーポレイティド | Smooth coextruded polyester film containing talc and method for producing the same |
| FR2944024A1 (en) * | 2009-04-01 | 2010-10-08 | Cgl Pack Service | Thermoformable sheet material comprises amorphous polyethylene terephthalate and talc, and a mineral colorant, where the talc is present in the form of grains having a size of specified range |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3037998B2 (en) | 2000-05-08 |
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