JPH02175778A - Thin propylene resin sheet for release paper base - Google Patents
Thin propylene resin sheet for release paper baseInfo
- Publication number
- JPH02175778A JPH02175778A JP32997388A JP32997388A JPH02175778A JP H02175778 A JPH02175778 A JP H02175778A JP 32997388 A JP32997388 A JP 32997388A JP 32997388 A JP32997388 A JP 32997388A JP H02175778 A JPH02175778 A JP H02175778A
- Authority
- JP
- Japan
- Prior art keywords
- thin
- sheet
- release paper
- propylene homopolymer
- paper base
- 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
- 229920005989 resin Polymers 0.000 title claims description 19
- 239000011347 resin Substances 0.000 title claims description 19
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 title claims description 10
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 title claims description 10
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 229920001384 propylene homopolymer Polymers 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 25
- 239000011256 inorganic filler Substances 0.000 claims description 10
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 6
- 239000004604 Blowing Agent Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000005187 foaming Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 239000004156 Azodicarbonamide Substances 0.000 abstract description 2
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 abstract description 2
- 235000019399 azodicarbonamide Nutrition 0.000 abstract description 2
- 239000000155 melt Substances 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract 2
- 210000005036 nerve Anatomy 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004898 kneading Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- 229920002050 silicone resin Polymers 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
Landscapes
- Adhesive Tapes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は剥離紙用基材として好適なプロピレン樹脂肉薄
物に関する。さらにくわしくは、耐熱性が良好であるば
かりでなく、腰のある剥離紙用基材として好適なプロピ
レン樹脂肉薄物に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thin propylene resin material suitable as a base material for release paper. More specifically, the present invention relates to a thin propylene resin material that not only has good heat resistance but also has stiffness and is suitable as a base material for release paper.
従来、剥離紙用基材は紙がほとんどである。 Conventionally, most of the base materials for release paper are paper.
また、紙の片面もしくは両面に長鎖分岐を有する低密度
ポリエチレン（以下ｒＬＤＰＥＪと云う）と短鎖分岐を
有する直鎖状低密度ポリエチレン（以下ｒＬＬＤＰＥＪ
と云う）とからなる混合樹脂層、ＬＤＰＥまたはＬＬＤ
ＰＥと中密度ないし高密度ポリエチレンとからなる混合
樹脂層またはＬＤＰＥとポリプロピレンとからなる混合
樹脂層が設けられた剥離紙基材が提案されている（実公
昭８２−２３７９４号、同８２−２３７９０号、同実公
昭６２−２３７９１号）。しかし、プラスチックのみを
基材とした剥離紙はほとんど商品化されていなかった。In addition, low density polyethylene (hereinafter referred to as rLDPEJ) having long chain branches on one or both sides of the paper and linear low density polyethylene (hereinafter referred to as rLLDPEJ) having short chain branches on one or both sides of the paper are used.
A mixed resin layer consisting of LDPE or LLD
A release paper base material provided with a mixed resin layer consisting of PE and medium-density to high-density polyethylene or a mixed resin layer consisting of LDPE and polypropylene has been proposed (Utility Model Publication Nos. 82-23794 and 82-23790). , Dojitsu Kosho No. 62-23791). However, release paper based solely on plastic has rarely been commercialized.
そのため、本発明者らはプロピレン単独重合体の延伸発
泡肉薄物が耐熱性にすぐれているのみならず、腰がある
ために剥離紙用基材として有望であることを見い出し以
前に提案した。Therefore, the present inventors have previously discovered that a thin stretched foam made of a propylene homopolymer not only has excellent heat resistance but also has firmness and is therefore promising as a base material for release paper.
しかしながら、紙基材の場合では、エチレン樹脂などを
紙にラミネートして剥離紙用の基材とするため、紙のカ
ールやラミネート時の紙の凹凸によるピンホールの発生
などの問題がある。さらに、熱による寸法安定性の点に
ついても、エチレン系樹脂ではネックとなり、たかだか
１２０℃程度の耐熱性しか得られず、シリコンキニアー
工程における加工速度にも限界があった。However, in the case of a paper base material, ethylene resin or the like is laminated onto the paper to make the base material for the release paper, so there are problems such as curling of the paper and occurrence of pinholes due to unevenness of the paper during lamination. Furthermore, dimensional stability due to heat is also a problem with ethylene resins, which can only achieve heat resistance of about 120° C. at most, and there is also a limit to processing speed in the silicone quinear process.
一方、プラスチックは、高ヤング率、軽量化。On the other hand, plastic has a high Young's modulus and is lightweight.
耐熱性による寸法安定性などが充分達成できなかったた
めと考えられる。また、以前に捉した延伸発泡されたプ
ロピレン単独重合体の肉薄物については必ずしも満足す
べきものではない。This is thought to be due to insufficient dimensional stability due to heat resistance. Also, the previously captured thin-walled stretch-foamed propylene homopolymer products are not necessarily satisfactory.
以上のことから、本発明はこれらの問題点（欠点）がな
く、すなわち耐熱性がすぐれ、しかも腰のある剥離紙基
材として好適なプロピレン樹脂肉薄物を得ることである
。In light of the above, the object of the present invention is to obtain a thin propylene resin material that does not have these problems (defects), has excellent heat resistance, and is flexible and suitable as a release paper base material.
〔課題を解決するための手段及び作用〕本発明にしたが
えば、これらの課題は
無機充填剤を含有するプロピレン単独重合体の肉薄物で
あり、該肉薄物の発泡倍率は１．２〜３．５倍であり、
かつ延伸倍率は１．５〜７倍であり、１００重量部のプ
ロピレン単独重合体に対する無機充填剤の組成割合は３
〜２０重量部であり、しかも永久変形率は多くとも２％
である剥離紙基材用プロピレン樹脂肉薄物、
によって解決することができる。以下、本発明を具体的
に説明する。[Means and effects for solving the problems] According to the present invention, these problems are a thin product of propylene homopolymer containing an inorganic filler, and the expansion ratio of the thin product is 1.2 to 3. .5 times,
The stretching ratio is 1.5 to 7 times, and the composition ratio of the inorganic filler to 100 parts by weight of propylene homopolymer is 3.
~20 parts by weight, and the permanent deformation rate is at most 2%
This problem can be solved by a thin propylene resin material for release paper base material, which is as follows. The present invention will be specifically explained below.
本発明において使われるプロピレン単独重合体のメルト
フローインデックス（ＪＩＳ Ｋ７２１０にしたがい、
条件が１４で測定、以下ｒＭＦＲＪと云う）は通常１．
０〜１５．／１０分であり、２．０〜１５ｇ／１０分が
好ましく、とりわけ２．０＝ １０ ｇ ／ １０分が
好適である。ＭＦＲが１．ｏｇ／１０分未満のプロピレ
ン単独重合体を用いるならば、肉薄物を製造するさいに
成形性がよくない。一方、１５ｒ／ｌｏ分を超えたもの
を使用すると、成形性がよくないだけでなく、高倍率延
伸が達成できない。The melt flow index of the propylene homopolymer used in the present invention (according to JIS K7210,
Measured under conditions 14, hereinafter referred to as rMFRJ) is usually 1.
0-15. /10 minutes, preferably 2.0 to 15 g/10 minutes, particularly preferably 2.0=10 g/10 minutes. MFR is 1. If a propylene homopolymer with less than og/10 min is used, moldability is not good when manufacturing thin-walled products. On the other hand, if it exceeds 15 r/lo, not only will the moldability be poor, but also high stretching ratios will not be achieved.
また、本発明において用いられる無機充填剤の代表例と
しては、マイカ、炭酸カルシウム、クレー、沈降性硫酸
バリウムがあげられる。炭酸カルシウムのごとき粉末状
のものを無機充填剤として使用するさい、その平均粒径
は成形性、混合性などの点から、一般には５〜ｓｏｏｍ
（好ましくは、１０〜３００μｓ）である。また、マイ
カのごとく鱗片状のものを使う場合、その厚さは１〜２
０ｕｍ（望ましくは、１〜ｌ’ｈｎ）であり、かつその
アスペクト比が５〜９０倍（好ましくは、１０〜８５倍
）のものが好適である。Furthermore, typical examples of inorganic fillers used in the present invention include mica, calcium carbonate, clay, and precipitated barium sulfate. When powdered material such as calcium carbonate is used as an inorganic filler, its average particle size is generally 5 to soo from the viewpoint of moldability and mixability.
(preferably 10 to 300 μs). Also, when using a scaly material such as mica, the thickness should be 1 to 2
0 um (preferably 1 to l'hn) and an aspect ratio of 5 to 90 times (preferably 10 to 85 times).
１００重量部のプロピレン単独重合体に対する無機充填
剤の組成割合は３〜２０重量部であり、特に３〜１５重
量部が望ましい。１００重量部のプロピレン単独重合体
に対する無機充填剤の組成割合が３重量部未満では、軽
量化および耐熱性の点について問題がある。一方、２０
重量部を超えるならば、−軸延伸が困難となる。The composition ratio of the inorganic filler to 100 parts by weight of propylene homopolymer is 3 to 20 parts by weight, preferably 3 to 15 parts by weight. If the composition ratio of the inorganic filler to 100 parts by weight of the propylene homopolymer is less than 3 parts by weight, there are problems in terms of weight reduction and heat resistance. On the other hand, 20
If it exceeds parts by weight, -axis stretching becomes difficult.
本発明の肉薄物を製造するにあたり、まずプロピレン単
独重合体と無機充填剤を前記の組成割合あの範囲内で均
一状に混合する。混合方法としては特に限定する方法で
なくてもよく、プロピレン系樹脂の分野において一般に
実施されている方法を適用すればよい。その方法はヘン
シェルミキサーのごとき混合機を使ってトライブレンド
する方法および押出機のごとき混練機を用いて溶融混練
する方法がある。このさい、あらかじめトライブレンド
し、得られる混合物を溶融混練させることによって一層
均一な組成物を得ることができる。In producing the thin-walled product of the present invention, first, a propylene homopolymer and an inorganic filler are uniformly mixed within the above-mentioned composition ratio range. The mixing method does not need to be particularly limited, and any method commonly used in the field of propylene resins may be applied. Methods include tri-blending using a mixer such as a Henschel mixer and melt-kneading using a kneader such as an extruder. At this time, a more uniform composition can be obtained by triblending in advance and melt-kneading the resulting mixture.
本発明の組成物を製造するにはプロピレン単独重合体と
無機充填剤とを前記の組成割合で均一に混合することに
よって得ることができる。これらにプロピレン系樹脂の
分野において一般に使われている酸素、光（紫外線）お
よび熱に対する安定剤、帯電防止剤、滑剤、可塑剤１着
色剤などの添加剤を本発明の組成物が有する特性を本質
的に損わない範囲内で添加してもよい。The composition of the present invention can be produced by uniformly mixing a propylene homopolymer and an inorganic filler in the above composition ratio. Additives commonly used in the field of propylene resins, such as oxygen, light (ultraviolet) and heat stabilizers, antistatic agents, lubricants, plasticizers and colorants, are added to the compositions of the present invention. It may be added within a range that does not essentially cause any damage.
このようにして得られた組成物を肉薄状に成形させるこ
とによって剥離紙用基材を得ることができる。肉薄物は
オレフィン系樹脂の分野において通常実施されているＴ
ダイ成形法、インフレーション成形法などの成形法によ
って得ることができる。このさい、成形温度は配合され
る発泡剤の種類によって異なるが、一般には２００〜２
５０℃（好適には、２００〜２４０℃）である。このよ
うにして得られた肉薄物の厚さは通常５０〜１０００ρ
（望ましくは、６０〜５００μｓ）である。また、発泡
倍率は１．２〜３．５倍（好ましくは、１．２〜３．０
倍）である。発泡倍率が１．２倍未満では、充分な軽量
化が行なわれない。一方、３．５倍を超えると、表面の
肌荒れが激しく、シリコン塗布の工程において、シリコ
ンが均一に塗布することができない。さらに、延伸倍率
は１．５〜７倍（望ましくは、１．５〜６倍）である。A base material for release paper can be obtained by molding the composition thus obtained into a thin shape. For thin-walled products, T is commonly used in the field of olefin resins.
It can be obtained by a molding method such as a die molding method or an inflation molding method. At this time, the molding temperature varies depending on the type of blowing agent blended, but is generally 200-200 m
The temperature is 50°C (preferably 200 to 240°C). The thickness of the thin-walled product obtained in this way is usually 50 to 1000 ρ.
(preferably 60 to 500 μs). In addition, the foaming ratio is 1.2 to 3.5 times (preferably 1.2 to 3.0 times).
times). If the expansion ratio is less than 1.2 times, sufficient weight reduction will not be achieved. On the other hand, if it exceeds 3.5 times, the surface becomes rough and silicon cannot be applied uniformly in the silicon application process. Furthermore, the stretching ratio is 1.5 to 7 times (preferably 1.5 to 6 times).
この延伸によってヤング率を上げるためである。延伸倍
率が１．５倍未満では、高ヤング率を達成することがで
きない。一方、７倍を超えるように延伸することが困難
となる。This is because this stretching increases Young's modulus. If the stretching ratio is less than 1.5 times, a high Young's modulus cannot be achieved. On the other hand, it becomes difficult to stretch the film more than 7 times.
また、永久変形率（１２０℃の温度で６０秒間オーブン
中で３０ｋｇの荷重をかけた後、荷重を除き、室温にも
どした時の歪量を元の長さで除した値）を多（とも２％
にすることが重要である。かりに、永久変形率が２％を
超えると、シリコーン樹脂などでキニアー工程で肉薄物
がクルミや変形が発生し、満足すべき肉薄物を得ること
ができない。In addition, the permanent deformation rate (value obtained by applying a load of 30 kg in an oven at a temperature of 120°C for 60 seconds, removing the load, and returning to room temperature, the amount of strain divided by the original length) 2%
It is important to On the other hand, if the permanent deformation rate exceeds 2%, thin-walled products such as silicone resins will become warped or deformed during the kinear process, making it impossible to obtain satisfactory thin-walled products.
以上のようにして得られた肉薄物を使って剥離紙を製造
するには、該肉薄物の片面または両面に後記の剥離剤層
が設けられるが、剥離剤層が片面に設けられた場合では
、その反対の肉薄物面にポリ塩化ビニリデン、ポリスチ
レン、スチレン−ブタジェン共重合体、セルロース誘導
体、ポリオレフィンなどの樹脂層を設けてもよい。In order to produce a release paper using the thin material obtained as described above, a release agent layer described later is provided on one or both sides of the thin material, but in the case where the release agent layer is provided on one side, A resin layer of polyvinylidene chloride, polystyrene, styrene-butadiene copolymer, cellulose derivative, polyolefin, or the like may be provided on the opposite thin surface.
剥離剤としては、剥離紙の分野において広く使われてい
るものであればよく、特に限定するものではないが、代
表例としてシリコーン樹脂（付加反応型および縮合反応
型）、シリコーン−アルキッド共重合体、アルコキシド
樹脂、ポリビニルアルコールとシリコーン樹脂との混合
物があげられる。The release agent may be one that is widely used in the field of release paper, and is not particularly limited, but typical examples include silicone resins (addition reaction type and condensation reaction type), silicone-alkyd copolymers. , alkoxide resins, and mixtures of polyvinyl alcohol and silicone resins.
なお、肉薄物と剥離剤との密着性をさらに強固にさせる
ためにあらかじめ肉薄物の表面をコロナ放電処理、紫外
線放射処理、酸化処理などの処理を行なうことも可能で
ある。In addition, in order to further strengthen the adhesion between the thin-walled article and the release agent, it is also possible to previously perform treatments such as corona discharge treatment, ultraviolet radiation treatment, and oxidation treatment on the surface of the thin-walled article.
このようにして得られる剥離紙は感圧接着剤、感熱接着
剤、プリプレグ接着剤などが塗工された粘着シートまた
は粘着テープに接合されて用いられるものである。The release paper thus obtained is used by being bonded to an adhesive sheet or adhesive tape coated with a pressure-sensitive adhesive, a heat-sensitive adhesive, a prepreg adhesive, or the like.
以下、実施例によって本発明をさらにくわしく説明する
。Hereinafter, the present invention will be explained in more detail with reference to Examples.
なお、実施例および比較例において、密度は得られた肉
薄物の体積と重量の測定を行ない、算出することによっ
て求めた。また、発泡倍率はこの密度から算出した。さ
らに、ヤング率はＪＩＳ Ｋ６７５８に従って測定した
。また、耐熱性は肉薄物をオーブン中に入れ、１分間放
置した後、熱変形を起こす最低温度を測定して示す。In the Examples and Comparative Examples, the density was determined by measuring and calculating the volume and weight of the obtained thin-walled material. Moreover, the foaming ratio was calculated from this density. Furthermore, Young's modulus was measured according to JIS K6758. Heat resistance is determined by placing a thin-walled article in an oven, leaving it for one minute, and then measuring the lowest temperature at which thermal deformation occurs.
実施例 Ｉ
ＭＦＲが８−２ｇ／１０分であるプロピレン単独重合体
１００重量部、平均粒径が３５ｍである炭酸カルシウム
７．０重量部および発泡剤としてアゾジカルボンアミド
１８０重量部をあらかじめヘンシェルミキサＴを使って
５分間トライブレンドした。得られた混合物を押出機（
径 ６５ａ＋ｓ）を用いて樹脂温度が２３０℃で混練さ
せながら組成物を製造するとともにシート成形を行ない
、厚さが１１０ＩＥＯのシートを製造した。このシート
を永久変形率が２％以内となるように５倍に延伸させ、
発泡延伸フィルムを製造した。Example I 100 parts by weight of propylene homopolymer having an MFR of 8-2 g/10 min, 7.0 parts by weight of calcium carbonate having an average particle size of 35 m, and 180 parts by weight of azodicarbonamide as a blowing agent were mixed in advance in a Henschel mixer T. Tri-blended for 5 minutes using The resulting mixture was passed through an extruder (
A composition was produced while kneading the resin at a resin temperature of 230°C using a diameter of 65a+s), and sheet molding was performed to produce a sheet having a thickness of 110IEO. This sheet is stretched 5 times so that the permanent deformation rate is within 2%,
A foamed stretched film was produced.
実施例 ２
実施例１において使用した炭酸カルシウムのかわり、マ
イカ（厚さ ３．３ｇ、アスペクト比 ８０倍）を使っ
たほかは、実施例１と同様にトライブレンドを行なった
。得られた混合物を実施例１と同様に混練させながらシ
ートを成形し、このシートを永久変形率が２％以内にな
るように５倍に延伸させて発泡延伸フィルムを製造した
。Example 2 Triblending was carried out in the same manner as in Example 1, except that mica (thickness: 3.3 g, aspect ratio: 80 times) was used instead of the calcium carbonate used in Example 1. The resulting mixture was kneaded and molded into a sheet in the same manner as in Example 1, and the sheet was stretched 5 times so that the permanent deformation rate was within 2% to produce a foamed stretched film.
比較例 １
実施例１と同じ組成で同様に混練させ、シートを成形し
た。このシートを永久変形率が５％となるように５倍に
延伸させて発泡延伸フィルムを製造した。Comparative Example 1 The same composition as in Example 1 was kneaded and a sheet was formed. This sheet was stretched 5 times so that the permanent deformation rate was 5% to produce a foamed stretched film.
比較例 ２
実施例１において得られた混合物を押出温度が２３０℃
でＴダイ法によって厚さが２７−の未延伸発泡フィルム
を製造した。Comparative Example 2 The mixture obtained in Example 1 was extruded at a temperature of 230°C.
An unstretched foamed film having a thickness of 27 mm was produced using the T-die method.
実施例１において用いた炭酸カルシウムの配合量を３０
重量部にかえたほかは、実施例１と同様に混合物を製造
した（比較例５）。The amount of calcium carbonate used in Example 1 was 30
A mixture was produced in the same manner as in Example 1 except that the parts by weight were changed (Comparative Example 5).
比較例３および４によって得られた各混合物を実施例１
と同様に混練させながらシートを成形した。得られた各
シートを永久変形率が２％以内になるように延伸させフ
ィルムを製造した。Each mixture obtained in Comparative Examples 3 and 4 was used in Example 1.
A sheet was formed while kneading in the same manner as above. Each of the obtained sheets was stretched so that the permanent deformation rate was within 2% to produce a film.
このようにして得られた各フィルムの密度２発泡倍率、
ヤング率、耐熱性および永久変形率を測定した。それら
の結果を第１表に示す。The density of each film obtained in this way 2 expansion ratio,
Young's modulus, heat resistance and permanent deformation rate were measured. The results are shown in Table 1.
第 １ 表 した。Chapter 1 Table did.
本発明の剥離紙基材用プロピレン樹脂肉薄物は、下記の
ごとき効果を発揮する。The propylene resin thin material for release paper base material of the present invention exhibits the following effects.
（１）耐熱性がすぐれている
（２）剛性が強り、シたがって腰が強い（３）軽量であ
る
（４）寸法安定性が良好である
本発明の剥離紙基材用プロピレン樹脂肉薄物は以上のご
とき効果を発揮するためにその表面にシリコンを塗布す
ることによって剥離紙用基材として有望である。(1) Excellent heat resistance (2) Strong rigidity and therefore strong elasticity (3) Light weight (4) Good dimensional stability Thin propylene resin for release paper base material of the present invention In order to exhibit the above-mentioned effects, the material is promising as a base material for release paper by coating the surface with silicone.
Claims (1)
あり、該肉薄物の発泡倍率は１．２〜３．５倍であり、
かつ延伸倍率は１．５〜７倍であり、１００重量部のプ
ロピレン単独重合体に対する無機充填剤の組成割合は３
〜２０重量部であり、しかも永久変形率は、多くとも２
％である剥離紙基材用プロピレン樹脂肉薄物。It is a thin product of propylene homopolymer containing an inorganic filler, and the expansion ratio of the thin product is 1.2 to 3.5 times,
The stretching ratio is 1.5 to 7 times, and the composition ratio of the inorganic filler to 100 parts by weight of propylene homopolymer is 3.
~20 parts by weight, and the permanent deformation rate is at most 2
% propylene resin thin material for release paper base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32997388A JPH02175778A (en) | 1988-12-27 | 1988-12-27 | Thin propylene resin sheet for release paper base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32997388A JPH02175778A (en) | 1988-12-27 | 1988-12-27 | Thin propylene resin sheet for release paper base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02175778A true JPH02175778A (en) | 1990-07-09 |
Family
ID=18227342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32997388A Pending JPH02175778A (en) | 1988-12-27 | 1988-12-27 | Thin propylene resin sheet for release paper base |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02175778A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005187663A (en) * | 2003-12-25 | 2005-07-14 | Mitsubishi Plastics Ind Ltd | Adhesive film sheet and method for producing adhesive film sheet |
-
1988
- 1988-12-27 JP JP32997388A patent/JPH02175778A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005187663A (en) * | 2003-12-25 | 2005-07-14 | Mitsubishi Plastics Ind Ltd | Adhesive film sheet and method for producing adhesive film sheet |
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