JPH05309798A - Laminated sheet for thermoforming - Google Patents
Laminated sheet for thermoformingInfo
- Publication number
- JPH05309798A JPH05309798A JP4137562A JP13756292A JPH05309798A JP H05309798 A JPH05309798 A JP H05309798A JP 4137562 A JP4137562 A JP 4137562A JP 13756292 A JP13756292 A JP 13756292A JP H05309798 A JPH05309798 A JP H05309798A
- Authority
- JP
- Japan
- Prior art keywords
- laminated sheet
- sheet
- stretched
- polyester resin
- unstretched
- 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
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、熱成形用の積層シー
ト、特にＰＴＰ（プレススルーパック）包装体の収納室
を形成する熱可塑性樹脂シートとして好適な積層シート
に係わるものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated sheet for thermoforming, and more particularly to a laminated sheet suitable as a thermoplastic resin sheet forming a storage chamber for PTP (press through pack) packages.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】熱成形
用の熱可塑性樹脂シート、例えば錠剤やカプセル等の薬
品を個別に収納するＰＴＰ包装体における収納室を形成
する樹脂シートは透明性がよいこと、防湿性であるこ
と、真空成形、圧空成形等の熱成形によって容易に成形
できること、成形後の成形品の滑りが良好であって、成
形品の集積が容易であること、剛性が大であることなど
が要請され、従来、塩化ビニル樹脂シートが用いられて
きた。しかし最近ではこの樹脂シートは環境保全上、問
題があるとして、これに代るものが探求されている。2. Description of the Related Art Thermoplastic resin sheets for thermoforming, for example, resin sheets forming a storage chamber in a PTP package for individually storing chemicals such as tablets and capsules have good transparency. Moisture resistance, that it can be easily molded by thermoforming such as vacuum molding and pressure molding, that the molded products have good slip after molding, and that they are easy to accumulate, and that they have high rigidity. There is a demand for certain things, and vinyl chloride resin sheets have been conventionally used. However, these resin sheets have recently been sought to replace them because they pose a problem in terms of environmental protection.
【０００３】かかる探求に応じ、無延伸ポリプロピレン
樹脂シート又は無延伸ポリエステル樹脂シートが考えら
れているが、これらにも、それぞれ問題がある。即ち、
無延伸ポリプロピレン樹脂シートには、次のような問題
がある。 （ａ）熱成形温度範囲が狭い。 （ｂ）従来使用されていた塩化ビニル樹脂シート用の成
形機がそのまま使用できず、成形機の改造を必要とす
る。 （ｃ）シートの腰がない。In response to such a quest, unstretched polypropylene resin sheets or unstretched polyester resin sheets have been considered, but each of them also has problems. That is,
The unstretched polypropylene resin sheet has the following problems. (A) The thermoforming temperature range is narrow. (B) The conventionally used molding machine for vinyl chloride resin sheets cannot be used as it is, and the molding machine needs to be modified. (C) The seat is not stiff.
【０００４】また、無延伸ポリエステル樹脂シートでは
次のような問題がある。 （ｄ）成形機の加熱板へシートがブロッキングを起こ
し、加熱したシートを送るための張力により、シートが
幅収縮を起こし、寸法不足となる。 （ｅ）熱成形温度範囲が狭い。 （ｆ）成形品の滑りが悪く、集積不良となる。 （ｇ）透湿性が大きい。The unstretched polyester resin sheet has the following problems. (D) The sheet causes blocking to the heating plate of the molding machine, and the tension for feeding the heated sheet causes the sheet to contract in width, resulting in insufficient dimension. (E) The thermoforming temperature range is narrow. (F) The slippage of the molded product is poor, resulting in poor integration. (G) High moisture permeability.
【０００５】また、ポリエチレンテレフタレート系樹脂
層とポリプロピレン又は高密度ポリエチレンの層を含む
積層シートよりなるＰＴＰ包装体が提案されており（特
公平３−３５７８号公報）、具体的例としてポリプロピ
レンの層の両面にポリエチレンテレフタレートの層が積
層されている例が挙げられている。この積層シートは吸
湿するとき、ガスを発生するような特別の薬品包装に適
するように、炭酸ガス透過度の高いシートを意図してい
るが、ヘーズ、成形性、成形後の滑りなどの点で十分と
いえない。A PTP package comprising a laminated sheet including a polyethylene terephthalate resin layer and a polypropylene or high density polyethylene layer has been proposed (Japanese Patent Publication No. 3-3578), and as a specific example, a polypropylene layer is used. An example in which a polyethylene terephthalate layer is laminated on both sides is given. This laminated sheet is intended to be a sheet with high carbon dioxide permeability so that it is suitable for special chemical packaging that generates gas when it absorbs moisture, but in terms of haze, moldability, slippage after molding, etc. Not enough.
【０００６】[0006]
【課題を解決するための手段】本発明は上記問題点を解
消することを目的とするものであり、その発明の要旨と
するところは未延伸ポリエステル樹脂の層の両面に未延
伸ポリプロピレン系樹脂の層が積層されており、上記未
延伸ポリエステル樹脂の層の両面の未延伸ポリプロピレ
ン樹脂の層のそれぞれの厚さは、未延伸ポリエステル樹
脂の層の厚さの７〜１４％の範囲内であることを特徴と
する熱成形用積層シートに存する。SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and the gist of the invention is to provide an unstretched polypropylene-based resin on both surfaces of an unstretched polyester resin layer. The layers are laminated, and the thickness of each of the unstretched polypropylene resin layers on both sides of the unstretched polyester resin layer is in the range of 7 to 14% of the thickness of the unstretched polyester resin layer. And a laminated sheet for thermoforming.
【０００７】本発明の積層シートにおける未延伸ポリエ
ステル樹脂の層を構成する樹脂としては、ジカルボン酸
成分としてのテレフタル酸、イソフタル酸等、従来から
ポリエステル製造用に知られているジカルボン酸の１種
或いは２種以上と、ジオール成分としてのエチレングリ
コール、ジエチレングリコール等、従来からポリエステ
ル製造用に知られているジオールの１種或いは２種以上
との組合わせからなるものが用いられる。The resin constituting the layer of the unstretched polyester resin in the laminated sheet of the present invention is terephthalic acid, isophthalic acid or the like as a dicarboxylic acid component, one of the dicarboxylic acids conventionally known for polyester production, or A combination of two or more kinds and one or more kinds of diols conventionally known for polyester production such as ethylene glycol and diethylene glycol as a diol component is used.
【０００８】具体的にはポリエチレンテレフタレート、
ポリエチレン２，６−ナフタレート、ポリブチレンテレ
フタレート、テレフタル酸と１，４−シクロヘキサンジ
メタノールからなるポリエステルが好適なものとして挙
げられ、更に、ジカルボン酸成分としてテレフタル酸を
主体とし、これにイソフタル酸を少量含有させたもの
と、ジオール成分としてエチレングリコールを主体と
し、これにジエチレングリコール、ポリアルキレングリ
コール又は１，４−シクロヘキサンジメタノールを少量
含有させたものとを共重合してなる共重合ポリエステル
等も用いられ、かかる共重合ポリエステルは、工業的に
安価に得られて好ましいものである。Specifically, polyethylene terephthalate,
Suitable examples include polyethylene 2,6-naphthalate, polybutylene terephthalate, and polyesters composed of terephthalic acid and 1,4-cyclohexanedimethanol. Further, terephthalic acid is mainly used as a dicarboxylic acid component, and a small amount of isophthalic acid is added to this. Copolymerized polyesters obtained by copolymerizing those containing ethylene glycol as a diol component with a small amount of diethylene glycol, polyalkylene glycol or 1,4-cyclohexanedimethanol are also used. Such a copolyester is preferable because it can be obtained industrially at low cost.
【０００９】これらのポリエステル樹脂の極限粘度（I
V）は０．６以上であることが望ましく、０．６より低
いとシートの強度が小さくなり好ましくない。また上記
ポリエステル樹脂は必要に応じて安定剤、滑剤、紫外線
吸収剤等を配合したものでもよい。これらポリエステル
樹脂はフィルム（乃至シート）とされ積層されるが、未
延伸のものが用いられる。延伸したものは成形型に忠実
な形状に成形されず、好ましくない。The intrinsic viscosity (I
V) is preferably 0.6 or more, and when it is lower than 0.6, the strength of the sheet becomes small, which is not preferable. Further, the above polyester resin may contain a stabilizer, a lubricant, an ultraviolet absorber and the like, if necessary. These polyester resins are formed into films (or sheets) and laminated, but unstretched ones are used. The stretched product is not preferable because it is not molded into a shape faithful to the mold.
【００１０】本発明の積層シートにおける未延伸ポリプ
ロピレン系樹脂の層を構成する樹脂としては、ホモポリ
プロピレン、プロピレンとエチレン、ブテン−１等のα
−オレフィンとのランダム共重合体が好ましい。なかで
もＪＩＳ Ｋ−７２１０の条件１４で測定したＭＩ（メ
ルトフローインデックス、単位ｇ／１０分）が１〜４で
あるものが、透明性及び成形性のバランス上好ましい。
即ちＭＩが１未満では透明性が悪くなり、ＭＩが４を越
えると熱成形時にべとつきが起り、成形性が悪くなる。The resin constituting the layer of the unstretched polypropylene resin in the laminated sheet of the present invention includes homopolypropylene, propylene and ethylene, α such as butene-1.
-Random copolymers with olefins are preferred. Among them, those having MI (melt flow index, unit g / 10 minutes) of 1 to 4 measured under the condition 14 of JIS K-7210 are preferable in terms of balance between transparency and moldability.
That is, when MI is less than 1, transparency is poor, and when MI is more than 4, tackiness occurs during thermoforming, resulting in poor moldability.
【００１１】上記ポリプロピレン系樹脂には、必要に応
じ、水添石油樹脂、酸化防止剤、紫外線吸収剤、その他
ポリエチレン、エチレン−プロピレン共重合体等をブレ
ンドしてもよい。これらポリプロピレン系樹脂はフィル
ムとされ積層されるが、未延伸のものが用いられる。延
伸フィルムとされたものを用いるときは成形性に悪い影
響を与える。If necessary, the polypropylene resin may be blended with hydrogenated petroleum resin, antioxidant, ultraviolet absorber, polyethylene, ethylene-propylene copolymer and the like. These polypropylene resins are formed into films and laminated, but unstretched resins are used. When a stretched film is used, the formability is adversely affected.
【００１２】本発明積層シートにおける未延伸ポリエス
テル樹脂の層の厚さは、例えばＰＴＰ包装用の場合１５
０〜２４０μｍの範囲内とするのが普通である。The thickness of the unstretched polyester resin layer in the laminated sheet of the present invention is, for example, 15 for PTP packaging.
It is usually within the range of 0 to 240 μm.
【００１３】本発明積層シートにおいて、上記未延伸ポ
リエステル樹脂の層の両面に積層する無延伸ポリプロピ
レン系樹脂層のそれぞれの厚さ（両面の合計厚さではな
い）は、未延伸ポリエステル樹脂層の厚さの７〜１４％
の範囲内とする。この値が７％未満では成形後の幅収縮
が大きく、成形温度範囲が狭くなって成形性が悪く、透
湿度が大きくなってＰＴＰ包装体用としては不適当であ
る。また上記値が１４％を越えると、成形温度範囲が狭
くなって、従来使用されてきた塩化ビニル樹脂シート用
の成形機をそのまま使用することができず、かつ得られ
る積層シートの剛性が小さくなり、ヘーズも悪化する。In the laminated sheet of the present invention, the thickness of each unstretched polypropylene resin layer laminated on both sides of the unstretched polyester resin layer (not the total thickness of both sides) is the thickness of the unstretched polyester resin layer. 7 to 14% of
Within the range of. If this value is less than 7%, the width shrinkage after molding is large, the molding temperature range is narrow and the moldability is poor, and the moisture permeability is large, which is unsuitable for PTP packaging. On the other hand, when the above value exceeds 14%, the molding temperature range becomes narrow, the conventionally used molding machine for vinyl chloride resin sheet cannot be used as it is, and the rigidity of the obtained laminated sheet becomes small. , Haze gets worse.
【００１４】本発明の積層シートの製造は、従来から知
られている方法、例えばドライラミネーション法、共押
出法等の方法による。共押出法の場合は、各層の間に接
着剤層を介在させて接着を行なうのがよい。The laminated sheet of the present invention is produced by a conventionally known method such as a dry lamination method or a coextrusion method. In the case of the co-extrusion method, it is preferable that an adhesive layer is interposed between the layers to perform the adhesion.
【００１５】本発明の積層シートはＰＴＰ包装体の製造
に用いられて有用なものである。図１は本発明の積層シ
ートを用いて製造したＰＴＰ包装体の縦断正面略図であ
る。The laminated sheet of the present invention is useful for producing a PTP package. FIG. 1 is a schematic vertical sectional front view of a PTP package manufactured using the laminated sheet of the present invention.
【００１６】図中、１は本発明の積層シート、２は積層
シート１を構成する無延伸ポリエステル樹脂層、３及び
４は同じく無延伸ポリプロピレン系樹脂層、５は積層シ
ート１の成形処理によって形成された錠剤等の収納室、
６は収納室５を閉鎖するために貼着されたアルミニウム
箔等の金属箔、７は個々の収納室を分離するために積層
シート１に設けたミシン孔、８は錠剤である。In the figure, 1 is a laminated sheet of the present invention, 2 is a non-stretched polyester resin layer constituting the laminated sheet 1, 3 and 4 are the same non-stretched polypropylene resin layers, and 5 is formed by a molding treatment of the laminated sheet 1. Storage room for stored tablets,
6 is a metal foil such as an aluminum foil attached to close the storage chamber 5, 7 is a perforation hole provided in the laminated sheet 1 for separating the individual storage chambers, and 8 is a tablet.
【００１７】[0017]
実施例１ 極限粘度０．７のポリエチレンテレフタレート（以下、
ＰＥＴと略称する）からなる厚さ２５４μｍの無延伸シ
ートの両面に、それぞれ同じ厚さ、即ち２３μｍの厚さ
からなる無延伸ポリプロピレン（以下ＰＰと略称する）
フィルム（ＭＩ＝２ｇ／１０分）（ＰＰフィルム／ＰＥ
Ｔシートの厚さの割合いは９％）をドライラミネーショ
ン法で積層させ、厚さ３００μｍの積層シートを得た。
このシートにつき、ヘーズ、透湿度、剛性、成形性、成
形後の滑りを測定し、表１に示す。なお、後記の実施例
及び比較例においても同様の測定を行ない、表１に示
す。Example 1 Polyethylene terephthalate having an intrinsic viscosity of 0.7 (hereinafter,
Non-stretched polypropylene (hereinafter abbreviated as PP) having the same thickness, that is, 23 μm on both surfaces of a non-stretched sheet having a thickness of 254 μm made of PET).
Film (MI = 2g / 10min) (PP film / PE
The T sheet has a thickness ratio of 9%) and was laminated by a dry lamination method to obtain a laminated sheet having a thickness of 300 μm.
For this sheet, haze, water vapor transmission rate, rigidity, moldability, and slippage after molding were measured and are shown in Table 1. In addition, the same measurement was performed in Examples and Comparative Examples described later, and is shown in Table 1.
【００１８】実施例２ 実施例１における無延伸ＰＥＴシートの厚さを２４２μ
ｍ、このシートの両面に積層する無延伸ＰＰフィルムそ
れぞれの厚さを２９μｍ（ＰＰフィルム／ＰＥＴシート
の厚さの割合いは１２％）とし、合計３００μｍの厚さ
のシートとする以外は実施例１と同様にし、積層シート
を得た。Example 2 The thickness of the unstretched PET sheet used in Example 1 was 242 μm.
m, the thickness of each unstretched PP film laminated on both sides of this sheet was 29 μm (the ratio of the thickness of the PP film / PET sheet was 12%), and the total thickness of the sheets was 300 μm. A laminated sheet was obtained in the same manner as in 1.
【００１９】比較例１ 実施例１における無延伸ＰＥＴシートの厚さを２７２μ
ｍ、このシートの両面に積層する無延伸ＰＰフィルムを
それぞれの厚さを１４μｍ（ＰＰフィルム／ＰＥＴシー
トの厚さの割合いは５．１％）とし、合計３００μｍの
厚さのシートとする以外は実施例１と同様にして積層シ
ートを得た。Comparative Example 1 The thickness of the unstretched PET sheet in Example 1 was changed to 272 μm.
m, except that the thickness of each unstretched PP film to be laminated on both sides of this sheet is 14 μm (the ratio of the thickness of the PP film / PET sheet is 5.1%) and the total thickness is 300 μm. A laminated sheet was obtained in the same manner as in Example 1.
【００２０】比較例２ 実施例１における無延伸ＰＥＴシートの厚さを２２０μ
ｍ、このシートの両面に積層する無延伸ＰＰフィルムそ
れぞれの厚さを４０μｍ（ＰＰフィルム／ＰＥＴシート
の厚さの割合いは１８．２％）とし、合計３００μｍの
厚さのシートとする以外は実施例１と同様にした。Comparative Example 2 The thickness of the unstretched PET sheet in Example 1 was 220 μm.
m, except that the thickness of each unstretched PP film laminated on both sides of this sheet is 40 μm (the ratio of the thickness of the PP film / PET sheet is 18.2%), and the total thickness of the sheets is 300 μm. Same as Example 1.
【００２１】比較例３ 極限粘度０．７のＰＥＴ単体からなる厚さ３００μｍの
無延伸ＰＥＴシートを比較品とした。 比較例４ ＭＩ＝２ｇ／１０分のＰＰ単体からなる厚さ３００μｍ
の無延伸ＰＰシートを比較品とした。Comparative Example 3 A 300 μm-thick unstretched PET sheet composed of PET alone having an intrinsic viscosity of 0.7 was used as a comparative product. Comparative Example 4 MI = 2 g / 10 min, PP made of simple substance, thickness 300 μm
The unstretched PP sheet of was used as a comparative product.
【００２２】比較例５ 塩化ビニル樹脂からなる厚さ３００μｍのシートを比較
品とした。 比較例６ ＭＩ＝２ｇ／１０分のＰＰ単体から製造した厚さ２００
μｍの無延伸ＰＰシートの両面に、極限粘度０．７のＰ
ＥＴからなる無延伸ＰＥＴフィルム（厚さはそれぞれ５
０μｍ）をドライラミネーション法によって積層し、合
計厚さ３００μｍの積層シートを得、これを比較品とし
た。Comparative Example 5 A 300 μm thick sheet made of vinyl chloride resin was used as a comparative product. Comparative Example 6 MI = 2 g / 10 min Thickness 200 manufactured from PP alone
P with an intrinsic viscosity of 0.7 on both sides of an unstretched PP sheet of μm
Unstretched PET film made of ET (thickness is 5
0 μm) was laminated by a dry lamination method to obtain a laminated sheet having a total thickness of 300 μm, which was used as a comparative product.
【００２３】上記実施例及び比較例によるシートの物性
を表１に示すが、その物性測定は次の方法による。 ヘーズ：ＪＩＳ Ｋ７１０５（Ａ）によって測定する。
測定値の単位は％である。 透湿度：ＪＩＳ Ｚ０２０８による。単位はｇ／ｍ2 ／
２４時である。The physical properties of the sheets according to the above-mentioned examples and comparative examples are shown in Table 1. The physical properties are measured by the following methods. Haze: Measured according to JIS K7105 (A).
The unit of measurement value is%. Water vapor transmission rate: According to JIS Z0208. The unit is g / m 2 /
It's 24:00.
【００２４】剛性：ＰＴＰ包装体の製造に用いられるよ
うに長さ２０ｍｍ、幅７．５ｍｍ、深さ７ｍｍの収容室
を１列５個で２列（収容室は計１０個）成形したシート
を、その収納室の開口側を下側にして置き、その上に厚
さ２ｍｍの塩化ビニル樹脂板をかぶせ、その上方より加
重し、成形品の深さが６０％変形、即ち元の深さ７ｍｍ
に対し、４．２ｍｍの変形を生じるときの荷重（単位は
ｇ）を測定する。Rigidity: A sheet formed by forming two 5 rows of storage chambers each having a length of 20 mm, a width of 7.5 mm and a depth of 7 mm (10 storage chambers in total) so as to be used for manufacturing a PTP package. Place the storage chamber with the open side facing down, cover it with a 2mm thick vinyl chloride resin plate, and load it from above to deform the molded product by 60%, that is, the original depth is 7mm.
On the other hand, the load (unit: g) at which a deformation of 4.2 mm occurs is measured.
【００２５】形成性：図１において符号１で示される形
状に成形を行なうためシートを加熱する際、シートが幅
方向に収縮を起こすが、その収縮が２００ｍｍにつき８
ｍｍの割合い以下であればその成形は合格となる。また
成形品が成形型の形状通りに仕上がれば合格となる。こ
の合格となる温度の範囲が広ければ成形操作が容易であ
り、不合格品の数も少いが、もし、上記合格温度の範囲
が狭くなると、成形操作に細心の注意を必要とし、また
不合格品も多くなる。ここでいう成形性とは、良好な成
形を行い得る成形時の温度範囲を示す。即ちこの範囲が
広ければ成形性が良いと判定される。Formability: When the sheet is heated to form into the shape indicated by reference numeral 1 in FIG. 1, the sheet shrinks in the width direction, but the shrinkage is 8 per 200 mm.
If the ratio is less than or equal to mm, the molding passes. In addition, if the molded product is finished according to the shape of the molding die, it will be passed. If the temperature range to be passed is wide, the molding operation will be easy, and the number of rejected products will be small.However, if the range of the above-mentioned passed temperature is narrow, the molding operation requires careful attention and The number of accepted products will increase. The moldability as used herein refers to a temperature range during molding in which good molding can be performed. That is, if this range is wide, it is determined that the moldability is good.
【００２６】成形後の滑り：上記剛性の評価に用いたと
同形状に成形したシート（収容室を合計１０個有するも
の）２枚を、収容室の膨出した面同士を接触するよう重
ね合わせ、２枚のシートをそれぞれ反対方向に動かして
滑らせる。このような方法により、比較例５の塩化ビニ
ル樹脂シートで行ったときと同程度の滑りのよいものを
○、それよりもやや滑りが悪いものを△、滑りが著しく
悪いものを×として表１に示す。Slip after molding: Two sheets (having a total of 10 accommodating chambers) molded in the same shape as used for the above-mentioned evaluation of rigidity were overlapped so that the bulged surfaces of the accommodating chambers contact each other, Slide the two sheets in opposite directions. According to such a method, one having a slippage comparable to that when the vinyl chloride resin sheet of Comparative Example 5 was used was evaluated as ◯, one having a slightly worse slippage than that was evaluated as Δ, and one having a significantly worse slippage was evaluated as Table 1. Shown in.
【００２７】上記の物性測定において、剛性、成形性及
び成形後の滑りの項目の測定に当っては、シートをＰＴ
Ｐ包装体製造用に成形を行ったが、この成形はＰＴＰＭ
型平板圧空真空機を用いた。また表１に示す総合評価
は、その左側に示す各特性結果を総合的にみて判断した
ものであり、それぞれのマークの意味は、比較例５の塩
化ビニル樹脂シートを基準にし（これを○印とする）、
これと同程度のものを○とし、これより若干不良なもの
を△、著しく不良と判断されるものを×とした。In the measurement of the above-mentioned physical properties, when measuring the items of rigidity, moldability and slippage after molding, the sheet is PT
Molding was done for P package manufacturing, but this molding is PTPM
A flat plate air pressure vacuum machine was used. Further, the comprehensive evaluation shown in Table 1 is a judgment made by comprehensively looking at the respective characteristic results shown on the left side, and the meaning of each mark is based on the vinyl chloride resin sheet of Comparative Example 5 (marked with a circle ,),
A sample having the same degree as this was evaluated as ◯, a sample slightly poorer than this was evaluated as Δ, and a sample judged to be significantly defective was evaluated as x.
【００２８】[0028]
【表１】 [Table 1]
【００２９】[0029]
【発明の効果】本発明の積層シートは、透湿度が低く、
透明度が良好で、剛性が大であり、熱成形を行なうとき
の成形性に優れ、かつ成形後の滑りも良好であり、成形
用シートとして、特にＰＴＰ包装体製造のための成形用
シートとして優れている。The laminated sheet of the present invention has a low moisture permeability,
Excellent transparency, high rigidity, excellent moldability when thermoforming, and good slippage after molding, excellent as a molding sheet, especially as a molding sheet for manufacturing PTP packages. ing.
【図１】本発明の積層シートを用いて製造したＰＴＰ包
装体の縦断正面略図。FIG. 1 is a schematic vertical sectional front view of a PTP package manufactured using the laminated sheet of the present invention.
１ 本発明の積層シート ２ 無延伸ポリエステル樹脂層 ３ 無延伸ポリプロピレン系樹脂層 ４ 無延伸ポリプロピレン系樹脂層 ６ 金属箔 1 Laminated sheet of the present invention 2 Unstretched polyester resin layer 3 Unstretched polypropylene resin layer 4 Unstretched polypropylene resin layer 6 Metal foil
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ３２Ｂ 27/36 7016−4Ｆ ─────────────────────────────────────────────────── ───Continued from the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B32B 27/36 7016-4F
Claims (1)
延伸ポリプロピレン系樹脂の層が積層されており、上記
未延伸ポリエステル樹脂の層の両面の未延伸ポリプロピ
レン樹脂の層のそれぞれの厚さは、未延伸ポリエステル
樹脂の層の厚さの７〜１４％の範囲内であることを特徴
とする熱成形用積層シート。1. A layer of unstretched polypropylene resin is laminated on both sides of the layer of unstretched polyester resin, and the thickness of each layer of unstretched polypropylene resin on both sides of the layer of unstretched polyester resin is: A laminated sheet for thermoforming, which is in the range of 7 to 14% of the thickness of the layer of unstretched polyester resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13756292A JP3193119B2 (en) | 1992-05-01 | 1992-05-01 | Laminated sheet for thermoforming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13756292A JP3193119B2 (en) | 1992-05-01 | 1992-05-01 | Laminated sheet for thermoforming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05309798A true JPH05309798A (en) | 1993-11-22 |
| JP3193119B2 JP3193119B2 (en) | 2001-07-30 |
Family
ID=15201627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13756292A Expired - Fee Related JP3193119B2 (en) | 1992-05-01 | 1992-05-01 | Laminated sheet for thermoforming |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3193119B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000301680A (en) * | 1999-04-19 | 2000-10-31 | Dainippon Printing Co Ltd | Decorative sheet and decorative material using the same |
| US20090081439A1 (en) * | 2004-11-17 | 2009-03-26 | Mr. Andrew John Lischefski | Breathable Packaging Film Having Enhanced Thermoformability |
-
1992
- 1992-05-01 JP JP13756292A patent/JP3193119B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000301680A (en) * | 1999-04-19 | 2000-10-31 | Dainippon Printing Co Ltd | Decorative sheet and decorative material using the same |
| US20090081439A1 (en) * | 2004-11-17 | 2009-03-26 | Mr. Andrew John Lischefski | Breathable Packaging Film Having Enhanced Thermoformability |
| US8449984B2 (en) * | 2004-11-17 | 2013-05-28 | Curwood, Inc. | Breathable packaging film having enhanced thermoformability |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3193119B2 (en) | 2001-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5972445A (en) | Multilayer polyester sheet | |
| WO2010015402A1 (en) | Multilayer structures comprising a microlayer sequence | |
| US4927690A (en) | Thermoformable laminated packaging material | |
| US20050281967A1 (en) | Battery package and method for producing the same | |
| JP6822447B2 (en) | Multilayer film and packaging made of it | |
| JPH05309798A (en) | Laminated sheet for thermoforming | |
| JP4689031B2 (en) | Plastic container with lid and manufacturing method thereof | |
| JP2001219958A (en) | Laminated body and cover material | |
| JPS63126739A (en) | Laminate | |
| JP2808262B2 (en) | Deep drawing packaging material, deep drawing container and package using the same | |
| JP2017141057A (en) | Partition material film and multistage package | |
| JP2004114582A (en) | Polyester sheet for thermoforming and package | |
| JPS5878749A (en) | Thermoplastic resin sheet for vacuum molding | |
| JP4495912B2 (en) | Multilayer film and container | |
| JP2021008038A (en) | Multilayer film and package | |
| JPH0650188Y2 (en) | Composite sheet for cold forming | |
| JPH0133334Y2 (en) | ||
| JPH0516284A (en) | Transparent packaging laminate sheet and extruded tube container composed of the packaging material | |
| JP3255777B2 (en) | Laminated film and hermetically sealed container using the same | |
| JPWO2004065121A1 (en) | Laminated film for deep drawn container bottom material | |
| JPS6021052B2 (en) | Thermoforming method for packaging containers | |
| JP3534531B2 (en) | Laminated sheet | |
| JP2001315284A (en) | Polyester laminate | |
| JP2023041356A (en) | Medicine packaging sheet, bottom material for press-through package, and press-through package | |
| JP2939497B2 (en) | Thermocompression laminated film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090525 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090525 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100525 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110525 Year of fee payment: 10 |
|
| LAPS | Cancellation because of no payment of annual fees |