JPH0460824B2 - - Google Patents
Info
- Publication number
- JPH0460824B2 JPH0460824B2 JP7312288A JP7312288A JPH0460824B2 JP H0460824 B2 JPH0460824 B2 JP H0460824B2 JP 7312288 A JP7312288 A JP 7312288A JP 7312288 A JP7312288 A JP 7312288A JP H0460824 B2 JPH0460824 B2 JP H0460824B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- manufactured
- sheets
- gas barrier
- resin
- 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.)
- Expired
Links
- 239000010410 layer Substances 0.000 claims description 24
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 230000004888 barrier function Effects 0.000 claims description 9
- 229920006122 polyamide resin Polymers 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims 2
- 239000003795 chemical substances by application Substances 0.000 description 12
- 230000000903 blocking effect Effects 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000554 ionomer Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- DEQUKPCANKRTPZ-UHFFFAOYSA-N (2,3-dihydroxyphenyl)-phenylmethanone Chemical class OC1=CC=CC(C(=O)C=2C=CC=CC=2)=C1O DEQUKPCANKRTPZ-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- NPFYZDNDJHZQKY-UHFFFAOYSA-N 4-Hydroxybenzophenone Chemical class C1=CC(O)=CC=C1C(=O)C1=CC=CC=C1 NPFYZDNDJHZQKY-UHFFFAOYSA-N 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- -1 fluororesin Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は無色透明性に優れ、且つ、優れた紫外
線カツト性を保持され、フイルム及びシート（以
下、シートで略す）に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to films and sheets (hereinafter abbreviated as sheets) that are colorless and transparent and have excellent ultraviolet blocking properties.
従来紫外線カツト性に優れた食品・医療用シー
トは少量の紫外線吸収剤（以下UV剤と略す）と
顔料の組み合わせにより紫外線をカツトしてき
た。
Conventionally, food and medical sheets with excellent UV blocking properties have blocked UV rays by combining a small amount of UV absorbers (hereinafter referred to as UV agents) and pigments.
しかし、従来のシートは有色のため食品・医療
分野では生産及び保管上のチエツクポイントの１
つである色調の変化が全くわからず、又、ユーザ
ーは内容物の色が判断出来ず不安要因の１つとな
つていた。 However, because conventional sheets are colored, it is one of the check points in production and storage in the food and medical fields.
Users were not able to notice any change in color tone, and users were unable to judge the color of the contents, which was one of the causes of anxiety.
最近、食品・医療分野では、添加物の安定性
や、病院の勤務体制の変更等により紫外線カツト
性を保有し高いガスバリア性のあるシートの需要
は増えている。 Recently, in the food and medical fields, demand for sheets with ultraviolet blocking properties and high gas barrier properties has been increasing due to factors such as the stability of additives and changes in hospital work schedules.
しかし、包装材として使用するシートは厚みが
薄いため、充分な紫外線カツト性を出すには、大
量のUV剤を耐光性の良いフイルムに添加する必
要がある。しかしUV剤の種類と耐光性に優れた
樹脂の組み合わせによつては着色しない場合、紫
外線を完全にカツト出来ない事があつた。 However, since the sheets used as packaging materials are thin, a large amount of UV agent must be added to the light-resistant film in order to provide sufficient UV protection. However, depending on the combination of the type of UV agent and resin with excellent light resistance, it may not be possible to completely block UV rays if no coloring is used.
本発明は、従来の無色透明のシートでは得られ
なかつた紫外線の優れたカツト性とガスバリア性
を兼ね備えたシートを得んとして研究した結果、
耐光性の優れた樹脂層におけるUV剤の添加量と
層厚みをコントロールすること、及びその他の樹
脂層を組み合せることにより相互補充により完全
に紫外線をカツトできるとの知見を得、更にこの
知見に基づき種々研究を進めて本発明を完成する
に至つたものである。
The present invention was developed as a result of research aimed at creating a sheet that has both excellent ultraviolet ray blocking properties and gas barrier properties that could not be obtained with conventional colorless and transparent sheets.
We learned that by controlling the amount of UV agent added and the layer thickness in a resin layer with excellent light resistance, and by combining other resin layers, we could completely block out UV rays by replenishing each other. Based on this, various studies have been carried out and the present invention has been completed.
本発明はUV剤を含有する耐光性及び透明性の
優れた樹脂層(1)が下記式
５≦Ｙ≦20
XY／100≧２
Ｘ：層(1)の厚み（μｍ）
Ｙ：層(1)の含有されるUV剤量（重量％）で定義
され、さらにポリアミド樹脂層(2)、ガスバリア
(3)、シール層(4)から構成されることを特徴とす
る積層体である。
In the present invention, the resin layer (1) containing a UV agent and having excellent light resistance and transparency has the following formula: 5≦Y≦20 XY/100≧2 X: Thickness of layer (1) (μm) Y: Layer (1) ) is defined by the amount (wt%) of UV agent contained in the polyamide resin layer (2), gas barrier
(3) and a sealing layer (4).
本発明に用いられる耐光性及び透明性の優れた
樹脂としては、アクリル樹脂、フツ素樹脂、ポリ
ビニルアルコール、ポリエステル、ポリカーボネ
ート、等が使用できるが、UV剤を大量に添加し
てシート加工が容易なものとしては、アクリル樹
脂、ポリエステル、ポリカーボネートが好まし
い。UV剤はサリシレートエステル、モノヒドロ
キシベンゾフエノン、ジヒドロキシベンゾフエノ
ン及びベンゾトリアゾール等が支えるが、単独で
なく、２種類以上の混合で使用する方が好まし
い。さらにUV剤の添加量はシート状の薄層で効
果を出す場合５重量％以上添加する必要がある。
しかし、20重量％以上ではシート加工が困難にな
り且つ出来たシートは透明性が大巾に低下する。 Acrylic resins, fluorine resins, polyvinyl alcohol, polyesters, polycarbonates, etc. can be used as the resins with excellent light resistance and transparency used in the present invention. Preferred materials include acrylic resin, polyester, and polycarbonate. Salicylate esters, monohydroxybenzophenones, dihydroxybenzophenones, benzotriazoles, and the like can be used as UV agents, but it is preferable to use them not alone but in combination of two or more. Furthermore, the amount of UV agent added needs to be 5% by weight or more if the effect is to be obtained in a thin sheet-like layer.
However, if it exceeds 20% by weight, it will become difficult to process the sheet and the transparency of the sheet will be greatly reduced.
UV剤の添加量と添加された樹脂層の厚みは同
じカツト性の場合反比例する。本発明では、種々
のUV剤及び添加量さらには層厚みについて莫大
な組み合わせを行なつた結果、紫外線を充分にカ
ツトするには、下記式の関係式の必要性を見出し
た。 The amount of UV agent added and the thickness of the added resin layer are inversely proportional when the cutting properties are the same. In the present invention, as a result of making numerous combinations of various UV agents, additive amounts, and layer thicknesses, we have discovered that the following relational expression is necessary in order to sufficiently block ultraviolet rays.
５≦Ｙ≦20
XY／100≧２
Ｘ：層(1)の厚み（μｍ）
Ｙ：層(1)に含有されるUV剤量（重量％）本発明
におけるシートは30μｍ〜300μｍのフイルム及
び300μｍ〜１mmのシートの範囲である。 5≦Y≦20 XY/100≧2 ~1mm sheets.
ポリアミド樹脂は、単独重合体と共重合体共
に使用可能である。さらにガラスバリア層とし
てはエチレン・ビニルアルコール共重合体及び
塩化ビニリデン及びその共重合体が使われる。 Both homopolymers and copolymers can be used as polyamide resins. Further, as the glass barrier layer, ethylene/vinyl alcohol copolymer and vinylidene chloride and copolymers thereof are used.
シール層については一般に使用されるアイオノ
マーやエチレン・酢酸ビニル共重合体、エチレン
系樹脂やプロピレン系樹脂及びそれらの共重合体
や樹脂組成物がある。 For the sealing layer, there are commonly used ionomers, ethylene/vinyl acetate copolymers, ethylene resins, propylene resins, and copolymers and resin compositions thereof.
積層体としての層構成順序は外側から層(1)、
(2)、(3)、(4)の順でも良いが、用途によつてはシー
ル層(4)以外の樹脂層の順は違つてもよい。 The layer structure order as a laminate is layer (1) from the outside,
The order of (2), (3), and (4) may be acceptable, but the order of the resin layers other than the seal layer (4) may be different depending on the application.
さらに用途によつては保護層を１層もうけるこ
とも可能でありポリオレフイン、ポリスチレン、
ポリアミド、ポリウレタン、ポリ塩化ビニル、フ
ツ素樹脂さらにはこれらの共重合体が使用でき
る。 Furthermore, depending on the application, it is possible to add one protective layer, such as polyolefin, polystyrene,
Polyamide, polyurethane, polyvinyl chloride, fluororesin, and copolymers thereof can be used.
実施例 １
UV剤を10重量％を添加したポリフツ化ビニリ
デン（フオラフロン6000HD昭和電工製）25μ、
６−ナイロン（10308宇部興産製）20μｍ、エチ
レン・ビニルアルコール共重合体（エバールＥク
ラレ製）15μ、アイオノマー（ハイミラン1652三
井ポリエミカル製）50μの構成順で接着層を介在
して共押出によりフイルムを作つた。このフイル
ムの紫外線カツト性及び酸素ガスバリア性を測定
したところ第１図のグラフに示すように紫外線カ
ツト性に優れ、酸素ガスバリア性（モコン社
OXTRAN使用）が1.5c.c.／m2・24Hという優れた
性能を示した。
Example 1 Polyvinylidene fluoride (Fuoraflon 6000HD manufactured by Showa Denko) 25μ to which 10% by weight of UV agent was added,
6-Nylon (10308 manufactured by Ube Industries) 20 μm, ethylene/vinyl alcohol copolymer (Eval E manufactured by Kuraray) 15 μm, and ionomer (Himilan 1652 manufactured by Mitsui Polychemicals) 50 μm were formed into a film by coextrusion with an adhesive layer interposed. I made it. When we measured the ultraviolet ray blocking properties and oxygen gas barrier properties of this film, we found that it had excellent ultraviolet ray blocking properties and oxygen gas barrier properties (Mocon Co., Ltd.) as shown in the graph of Figure 1.
(using OXTRAN) showed excellent performance of 1.5cc/ m2・24H.
実施例 ２
最外保護層にポリエステル（PETG6763イース
トマンコダツク製）10μ、UV剤を14重量％添加
したアクリル樹脂（ハイペツトHBS三菱レイヨ
ン製）10μ、6.12ナイロン（7028宇部興産製）
15μ、ポリ塩化ビニルリデン（サラン468グラケ
ミカル製）15μ、エチレン・酢酸ビニル共重合体
（エバフレツクスP1403C三井デユポンポリケミカ
ル製）40μの構成順で接着層を介在してドライラ
ミネートによりフイルムを作つた。実施例１同様
に性能評価したところ第２図のグラフに示すよう
に紫外線カツト性に優れ、酸素ガスバリア性（モ
コン社OXTRAN使用）が７c.c.／m2・24Hという
優れた性能を示した。Example 2 The outermost protective layer consists of 10μ of polyester (PETG6763 manufactured by Eastman Kodak), 10μ of acrylic resin with 14% by weight of UV agent added (manufactured by Hypet HBS Mitsubishi Rayon), and 6.12 nylon (7028 manufactured by Ube Industries).
A film was prepared by dry laminating with an adhesive layer interposed in the order of composition: 15μ, polyvinyllidene chloride (Saran 468 manufactured by Gra Chemical), 15μ, and 40μ of ethylene-vinyl acetate copolymer (Evaflex P1403C manufactured by Mitsui Dupont Polychemical). The performance was evaluated in the same manner as in Example 1, and as shown in the graph in Figure 2, it showed excellent performance in terms of UV protection and oxygen gas barrier properties (using Mocon's OXTRAN) of 7 c.c./m 2 for 24 hours. .
本発明の方法に従うと、従来の無色透明シート
では、得られなかつた紫外線の優れたカツト性と
高いガスバリア性を兼ね備えたシートが得られ、
内容物の色調や状態がはつきりわかるようにな
る。
According to the method of the present invention, a sheet can be obtained that has both excellent ultraviolet ray blocking properties and high gas barrier properties, which were not available with conventional colorless transparent sheets.
You will be able to clearly see the color tone and condition of the contents.
よつて消費者ばかりてなく、生産者において
も、生産管理や品質管理とする上で非常に有利な
ものとなる。 Therefore, it is very advantageous not only for consumers but also for producers in terms of production control and quality control.
第１図及び第２図は実施例１及び２における紫
外線カツト性を示すグラフである。
FIGS. 1 and 2 are graphs showing the ultraviolet blocking properties of Examples 1 and 2.
Claims (1)
優れた樹脂層(1)が下記式 ５≦Ｙ≦20 XY／100≧２ Ｘ：層(1)の厚み（μｍ） Ｙ：層(1)に含有される紫外線吸収剤量（重量％）
で定義され、さらに、ポリアミド樹脂層(2)、ガ
スバリア層(3)、シール層(4)から構成されること
を特徴とする積層体。 ２ 樹脂層(1)に保護層を１層もうけた請求の範囲
第１項記載の積層体。[Claims] 1. The resin layer (1) containing an ultraviolet absorber and having excellent light resistance and transparency has the following formula: 5≦Y≦20 XY/100≧2 X: Thickness of layer (1) (μm) Y: Amount of ultraviolet absorber contained in layer (1) (wt%)
A laminate further comprising a polyamide resin layer (2), a gas barrier layer (3), and a sealing layer (4). 2. The laminate according to claim 1, wherein the resin layer (1) has one protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7312288A JPH01247160A (en) | 1988-03-29 | 1988-03-29 | Laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7312288A JPH01247160A (en) | 1988-03-29 | 1988-03-29 | Laminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01247160A JPH01247160A (en) | 1989-10-03 |
| JPH0460824B2 true JPH0460824B2 (en) | 1992-09-29 |
Family
ID=13509118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7312288A Granted JPH01247160A (en) | 1988-03-29 | 1988-03-29 | Laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01247160A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69716789T2 (en) * | 1996-01-26 | 2003-07-03 | Teijin Chemicals Ltd., Tokio/Tokyo | lens |
| US6610392B1 (en) | 1998-03-04 | 2003-08-26 | Cryovac, Inc. | Heat-shrinkable multilayer packaging film comprising inner layer comprising a polyester |
| CA2321033C (en) | 1998-03-04 | 2008-12-30 | Cryovac, Inc. | Stack-sealable, heat-shrinkable multilayer packaging film |
-
1988
- 1988-03-29 JP JP7312288A patent/JPH01247160A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01247160A (en) | 1989-10-03 |
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