JPH082980B2 - Processing method for thermoplastic polyester containers - Google Patents
Processing method for thermoplastic polyester containersInfo
- Publication number
- JPH082980B2 JPH082980B2 JP5210846A JP21084693A JPH082980B2 JP H082980 B2 JPH082980 B2 JP H082980B2 JP 5210846 A JP5210846 A JP 5210846A JP 21084693 A JP21084693 A JP 21084693A JP H082980 B2 JPH082980 B2 JP H082980B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- thermoplastic polyester
- polyester container
- coating agent
- treatment
- 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 - Lifetime
Links
- 229920000728 polyester Polymers 0.000 title claims description 43
- 229920001169 thermoplastic Polymers 0.000 title claims description 19
- 239000004416 thermosoftening plastic Substances 0.000 title claims description 19
- 238000003672 processing method Methods 0.000 title description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 34
- 239000000057 synthetic resin Substances 0.000 claims description 34
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000011282 treatment Methods 0.000 claims description 21
- 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 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 7
- 239000003504 photosensitizing agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 26
- 239000007789 gas Substances 0.000 description 19
- 230000004888 barrier function Effects 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 244000028419 Styrax benzoin Species 0.000 description 2
- 235000000126 Styrax benzoin Nutrition 0.000 description 2
- 235000008411 Sumatra benzointree Nutrition 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 229960002130 benzoin Drugs 0.000 description 2
- -1 benzoin alkyl ether Chemical class 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 235000019382 gum benzoic Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- YNSNJGRCQCDRDM-UHFFFAOYSA-N 1-chlorothioxanthen-9-one Chemical compound S1C2=CC=CC=C2C(=O)C2=C1C=CC=C2Cl YNSNJGRCQCDRDM-UHFFFAOYSA-N 0.000 description 1
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 1
- KTALPKYXQZGAEG-UHFFFAOYSA-N 2-propan-2-ylthioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(C(C)C)=CC=C3SC2=C1 KTALPKYXQZGAEG-UHFFFAOYSA-N 0.000 description 1
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004278 EU approved seasoning Substances 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- 239000011354 acetal resin Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000012986 chain transfer agent Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002601 oligoester Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920001959 vinylidene polymer Polymers 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は、二軸延伸処理されてい
る熱可塑性ポリエステル製容器の処理方法であって、ガ
スバリヤー性、特に酸素や炭酸ガスに対する優れたガス
バリヤー性と、高度の水分不透過性とを付与できる熱可
塑性ポリエステル製容器の処理方法と、更にガスバリヤ
ー性と、水分不透過性とに加えて優れた表面硬度を兼備
する熱可塑性ポリエステル製容器を簡単、かつ確実に得
る方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating a thermoplastic polyester container which has been biaxially stretched, and has a gas barrier property, particularly an excellent gas barrier property against oxygen and carbon dioxide gas, and a high moisture content. A method for treating a thermoplastic polyester container capable of imparting impermeability, and further easily and surely obtaining a thermoplastic polyester container having excellent surface hardness in addition to gas barrier property and moisture impermeability It is about the method.
【０００２】[0002]
【従来の技術】従来の二軸延伸されている熱可塑性ポリ
エステル製容器（以下ポリエステル容器という）は、エ
チレンテレフタレートに代表される飽和ポリエステルを
原料として成形された容器で、普通パリソンと呼称され
ている有底の筒状成形体を容器胴部成形用金型内で二軸
延伸するか又はパリソンを膨張させ得る加熱下でブロー
成形し、前述のパリソンを５〜６倍程度に膨張させるこ
とによって得られるもので、無毒性であること、ガスバ
リヤー性や水分不透過性が他の合成樹脂の成型品より優
れていること、外観がガラス状を呈する等から化粧料用
容器、液状調味料等の食品用容器、医薬品用容器として
広く利用されている。2. Description of the Related Art A conventional biaxially stretched thermoplastic polyester container (hereinafter referred to as a polyester container) is a container formed by using a saturated polyester represented by ethylene terephthalate as a raw material, and is usually called a parison. Obtained by biaxially stretching a bottomed tubular molded body in a container body molding die or by blow molding under heating that can expand the parison, and expanding the parison about 5 to 6 times. It is non-toxic, has gas barrier properties and water impermeability superior to other synthetic resin molded products, and has a glassy appearance, so it is suitable for cosmetic containers, liquid seasonings, etc. Widely used as food containers and pharmaceutical containers.
【０００３】前記ポリエステル容器のガスバリヤー性を
改善するために、該ポリエステル容器外側表面にガスバ
リヤー性を有する被覆合成樹脂層を形成することが知ら
れている。In order to improve the gas barrier property of the polyester container, it is known to form a coated synthetic resin layer having a gas barrier property on the outer surface of the polyester container.
【０００４】[0004]
【発明が解決しようとする課題】しかし、ポリエステル
容器外側表面にガスバリヤー性を有する被覆合成樹脂層
を形成したものは、該被覆合成樹脂層とポリエステル容
器との接合力が充分ではなく、従って食料品や医薬品等
の内填物を長期間にわたってガスバリヤー性、水分不透
過性を保持させるには必ずしも充分でないばかりか、容
器の表面硬度が低いために、運搬や内填物の充填作業中
等に容器同士の擦れ合による擦傷が発生し易く、商品価
値を損ねる等の欠点を有している。However, in the case where the coated synthetic resin layer having a gas barrier property is formed on the outer surface of the polyester container, the bonding force between the coated synthetic resin layer and the polyester container is not sufficient, and therefore the food Not only is it not enough to maintain the gas barrier property and water impermeability of the filling materials such as products and pharmaceuticals for a long period of time, but also because the surface hardness of the container is low, during transportation or filling work of filling materials. It has a drawback that the scratches due to the rubbing of the containers easily occur and the commercial value is impaired.
【０００５】本発明は、前述従来の欠点を改善し、ガス
バリヤー性と水分不透過性に優れたポリエステル容器を
得る処理方法と、更にガスバリヤー性、水分不透過性
で、かつ表面硬度の高いポリエステル容器を得る処理方
法を提供するものである。The present invention is a treatment method for improving the above-mentioned conventional drawbacks to obtain a polyester container having excellent gas barrier properties and water impermeability, and further has gas barrier properties, water impermeability and high surface hardness. It is intended to provide a processing method for obtaining a polyester container.
【０００６】[0006]
【課題を解決するための手段】第１の発明は、ポリエス
テル容器胴部の少なくとも外側表面（胴部の少なくとも
外側表面を以下単に壁表面と略す）に、耐剥離性処理を
施した後、塩化ビニリデン系重合体5〜20重量％の溶剤
溶液からなるコーティング剤を塗布、乾燥して被覆合成
樹脂層を形成するポリエステル容器の処理方法である。According to a first aspect of the present invention, at least the outer surface of a polyester container body (at least the outer surface of the body is abbreviated as a wall surface hereinafter) is subjected to a peeling resistance treatment and then chlorinated. This is a method for treating a polyester container in which a coating agent consisting of a solvent solution of a vinylidene polymer of 5 to 20% by weight is applied and dried to form a coated synthetic resin layer.
【０００７】また、第２の発明は、ポリエステル容器壁
表面に、耐剥離性処理を施した後、塩化ビニリデン系重
合体5〜20重量％の溶剤溶液からなるコーティング剤を
塗布、乾燥して被覆合成樹脂層を形成し、次いで硬質表
面形成能と透明皮膜形成能とを兼備する合成樹脂に光増
感剤が添加されているコーティング剤を塗布した後、こ
れに紫外線照射処理を施して第２の被覆合成樹脂層を形
成するポリエステル容器の処理方法である。A second aspect of the invention is to subject the surface of a polyester container wall to a peeling-resistant treatment, and then apply a coating agent consisting of a solvent solution of a vinylidene chloride polymer of 5 to 20% by weight, and dry it for coating. After forming a synthetic resin layer and then applying a coating agent in which a photosensitizer is added to a synthetic resin having both hard surface forming ability and transparent film forming ability, this is subjected to ultraviolet irradiation treatment to form a second layer. Is a method for treating a polyester container for forming a coated synthetic resin layer.
【０００８】[0008]
【作用】本各発明は以上の如き構成からなるものであっ
て、ポリエステル容器壁表面に、耐剥離性処理を施す。
茲に、耐剥離性処理とは、塩化ビニリデン系被覆合成樹
脂層とポリエステル容器表面とが強固に接合できるため
の処理であって、例えば、熱可塑性合成樹脂のコーティ
ング剤によるプライマー層を形成せしめる。The present invention has the above-mentioned constitution, and the surface of the polyester container wall is subjected to a peeling resistance treatment.
In addition, the peeling resistance treatment is a treatment for firmly bonding the vinylidene chloride-based synthetic resin layer and the surface of the polyester container, for example, forming a primer layer with a coating agent of a thermoplastic synthetic resin.
【０００９】該プライマー層を形成する熱可塑性合成樹
脂としては、エチレン-酢酸ビニル共重合体、塩化ビニ
ル重合体、酢酸ビニル重合体、塩化ビニル-酢酸ビニル
共重合体、イソシアネート系重合体、可溶性ナイロン、
塩素化ポリオレフィンの中から選択されるものが使用で
きる。The thermoplastic synthetic resin forming the primer layer includes ethylene-vinyl acetate copolymers, vinyl chloride polymers, vinyl acetate polymers, vinyl chloride-vinyl acetate copolymers, isocyanate polymers, soluble nylons. ,
Those selected from chlorinated polyolefins can be used.
【００１０】次ぎに、前記プライマー層表面に、塩化ビ
ニリデン系重合体5〜20重量％の溶剤溶液からなるコー
ティング剤を塗布、乾燥して厚さ0.5〜20μmの被覆合成
樹脂層を形成する。Next, a coating agent comprising a solvent solution of 5 to 20% by weight of vinylidene chloride polymer is applied to the surface of the primer layer and dried to form a coated synthetic resin layer having a thickness of 0.5 to 20 μm.
【００１１】茲に、塩化ビニリデン系重合体とは、塩化
ビニリデン重合体、塩化ビニリデン共重合体又はこれら
の２種以上の混合物が使用できる。 また、該コーティ
ング剤は、塩化ビニリデン系重合体をテトラヒドロフラ
ン、トルエン、ＭＥＫ等の溶剤に溶解させたもので、こ
れをポリエステル容器壁表面に塗布、乾燥して被覆合成
樹脂層を形成する。In addition, the vinylidene chloride-based polymer may be a vinylidene chloride polymer, a vinylidene chloride copolymer, or a mixture of two or more thereof. The coating agent is a vinylidene chloride polymer dissolved in a solvent such as tetrahydrofuran, toluene or MEK, and is applied to the surface of a polyester container wall and dried to form a coated synthetic resin layer.
【００１２】該コーティング剤中の塩化ビニリデン系重
合体の濃度は5〜20重量％とする。5重量％未満ではガス
バリヤー性の効果が少なく、また、20重量％を超えて大
きくなり過ぎると、コーティング剤層形成工程中の乾燥
段階で、表面乾燥速度と内側の乾燥速度差とのために、
表面層と内側層との間で引っ張りあいが生じ、コーティ
ング剤層とポリエステル容器壁表面との間に顕微鏡的な
隙間が随所に発生し、これがガスバリヤー性の効果を低
減させてしまう。The concentration of the vinylidene chloride polymer in the coating agent is 5 to 20% by weight. If it is less than 5% by weight, the effect of gas barrier property is small, and if it exceeds 20% by weight and becomes too large, it may be caused by the difference in the surface drying rate and the inner drying rate in the drying step in the coating agent layer forming step. ,
Tensioning occurs between the surface layer and the inner layer, and microscopic gaps are generated everywhere between the coating agent layer and the polyester container wall surface, which reduces the gas barrier effect.
【００１３】例えば、コーティング剤中の塩化ビニリデ
ンの濃度が15重量％の場合は濃度20重量％よりガスバリ
ヤー性の効果が大きいことが確認されており、従って、
コーティング剤中の塩化ビニリデンの濃度は5〜20重量
％の範囲とする。For example, it has been confirmed that when the concentration of vinylidene chloride in the coating agent is 15% by weight, the gas barrier property is more effective than the concentration of 20% by weight.
The concentration of vinylidene chloride in the coating agent is in the range of 5 to 20% by weight.
【００１４】即ち、第１の発明は塩化ビニリデン系重合
体の被覆合成樹脂層が耐剥離性処理によってポリエステ
ル容器壁表面に強固に接合せしめられているため、該ポ
リエステル容器は長期間安定したガスバリヤー性と水分
不透過性とを有しており、また取扱途中で塩化ビニリデ
ン系の被覆合成樹脂層がポリエステル容器壁表面から簡
単に剥離する如き弊害は全く生じない。That is, in the first aspect of the invention, since the vinylidene chloride polymer-coated synthetic resin layer is firmly bonded to the surface of the polyester container wall by the peeling resistance treatment, the polyester container has a stable gas barrier for a long period of time. Of the vinylidene chloride-based synthetic resin layer does not easily peel off from the surface of the polyester container wall during handling.
【００１５】第１の発明で得られたポリエステル容器
は、被覆合成樹脂層を有しない容器と比較して１日当り
の酸素ガス透過量が75〜55％程度、また初期値2.7volum
eの炭酸水充填による試験に基づく水分透過量が、炭酸
水充填後１週間目で75〜60％程度、炭酸水充填後４週間
目で70〜50％程度に抑えられているものであった。The polyester container obtained in the first invention has an oxygen gas permeation amount per day of about 75 to 55% and an initial value of 2.7 volum, as compared with a container having no coated synthetic resin layer.
The water permeation amount based on the e-carbonated water filling test was suppressed to about 75 to 60% one week after the carbonated water filling and about 70 to 50% four weeks after the carbonated water filling. .
【００１６】次に、第２の発明は、前記第１の発明の塩
化ビニリデン系被覆合成樹脂層表面に、硬質表面形成能
と透明皮膜形成能とを兼備する合成樹脂に光増感剤が添
加されているコーティング剤を塗布し、これに紫外線照
射処理を施して厚さ1〜100μm程度の第２の被覆合成樹
脂層を形成する。Next, a second invention is to add a photosensitizer to a synthetic resin having both hard surface forming ability and transparent film forming ability on the surface of the vinylidene chloride-based synthetic resin layer of the first invention. The applied coating agent is applied, and an ultraviolet irradiation treatment is applied to this to form a second coated synthetic resin layer having a thickness of about 1 to 100 μm.
【００１７】第２の発明において使用する硬質表面形成
能と皮膜形成能とを兼備する合成樹脂とは、不飽和ポリ
エステル樹脂、アクリル系樹脂、アルキッド系樹脂、エ
ポキシ系樹脂、ウレタン系樹脂、アセタール樹脂、前記
各樹脂の変性樹脂又はこれらのものの共重合樹脂等であ
り、更に必要に応じてこれに低粘度、かつ高沸点のモノ
マー類、オリゴエステルアクリレート類又はシンナー等
の溶剤で希釈し、塗装に適する粘度に適宜調節されたも
のが使用される。The synthetic resin having both hard surface forming ability and film forming ability used in the second invention is an unsaturated polyester resin, an acrylic resin, an alkyd resin, an epoxy resin, a urethane resin, an acetal resin. , A modified resin of each of the above resins or a copolymer resin of these, etc., and further, if necessary, have a low viscosity and a high boiling point monomer, diluted with a solvent such as oligoester acrylates or thinner, and applied for coating. What is appropriately adjusted to a suitable viscosity is used.
【００１８】硬質表面形成能と皮膜形成能とを兼備する
合成樹脂に添加する光増感剤は、例えばベンゾイン、ベ
ンジル、ベンゾインアルキルエーテル、ベンゾフェノ
ン、ミヒラーケトン類、クロロチオキサントン、2・イソ
プロピルチオキサントン等公知のものが使用でき、更に
必要に応じて光重合促進剤たるアミン化合物、連鎖移動
剤たるメルカプタン類等が添加されていても良い。Photosensitizers added to a synthetic resin having both hard surface forming ability and film forming ability include, for example, benzoin, benzyl, benzoin alkyl ether, benzophenone, Michler's ketones, chlorothioxanthone, and 2-isopropylthioxanthone. Any of these may be used, and if necessary, an amine compound as a photopolymerization accelerator and a mercaptan as a chain transfer agent may be added.
【００１９】また、紫外線照射処理は、通常200〜450nm
程度の波長を有する高圧水銀ランプやメタルハライドラ
ンプ等によって行う。これによって、硬質表面形成能と
透明皮膜形成能とを兼備する合成樹脂は短時間に、かつ
簡単に高度の架橋結合が形成されて硬化し、表面硬度の
壁表面を有するポリエステル容器を得ることができる。The UV irradiation treatment is usually 200 to 450 nm.
It is performed by a high pressure mercury lamp or a metal halide lamp having a wavelength of a certain degree. As a result, a synthetic resin having both hard surface forming ability and transparent film forming ability is cured in a short time and easily with a high degree of cross-linking formed, and a polyester container having a wall surface with a surface hardness can be obtained. it can.
【００２０】尚、第２の発明において、耐剥離性処理と
してポリエステル容器壁表面に、熱可塑性合成樹脂のプ
ライマー層を形成するほかに、ポリエステル容器壁表面
に、例えば、火炎処理、コロナ放電処理、プラズマ処理
等の各種表面活性化処理を施しても良い。In the second invention, in addition to forming a primer layer of thermoplastic synthetic resin on the surface of the polyester container wall as the peeling resistance treatment, for example, flame treatment, corona discharge treatment, Various surface activation treatments such as plasma treatment may be performed.
【００２１】第２の発明の方法で得られたポリエステル
容器は、第１の発明と同様酸素ガス、炭酸ガスに対する
優れたガスバリヤー性と水分不透過性を有していると共
に、ステンレスウールで擦ったり又は硬度3H〜4H程度の
シャープな鉛筆芯で擦過しても何等傷痕は生ぜず、高い
硬度の表面をも有するものであった。The polyester container obtained by the method of the second invention has excellent gas barrier property against oxygen gas and carbon dioxide gas and water impermeability as in the first invention, and is rubbed with stainless wool. Even if it was scratched or scratched with a sharp pencil lead having a hardness of about 3H to 4H, no scratches were produced, and it had a high hardness surface.
【００２２】[0022]
【発明の効果】以上の如く、第１の発明は、ポリエステ
ル容器壁表面に耐剥離性処理を施すことによって、塩化
ビニリデン系重合体の被覆合成樹脂層をポリエステル容
器壁表面に強固に接合せしめることができ、従って、ポ
リエステル容器に長期間安定したガスバリヤー性と水分
不透過性を付与せしめることができる。また、取扱途中
で塩化ビニリデン系重合体の被覆合成樹脂層がポリエス
テル容器壁表面から剥離するおそれもない。As described above, according to the first aspect of the present invention, the surface of the polyester container wall is subjected to the peeling resistance treatment so that the vinylidene chloride polymer-coated synthetic resin layer is firmly bonded to the surface of the polyester container wall. Therefore, it is possible to impart a stable gas barrier property and moisture impermeability to the polyester container for a long period of time. Further, there is no fear that the coated synthetic resin layer of vinylidene chloride polymer will be separated from the surface of the polyester container wall during the handling.
【００２３】更に、第２の発明は、前記第１の発明の塩
化ビニリデン系被覆合成樹脂層表面に、硬質表面形成能
と皮膜形成能とを兼備する合成樹脂に、光増感剤を添加
したコーティング剤を塗布し、これに紫外線照射処理を
施すという簡単な処理によって、安定した被覆合成樹脂
層を形成することができ、得られたポリエステル容器は
優れたガスバリヤー性、水分不透過性を有すると共に、
表面硬度に優れたポリエステル容器が得られ、また運搬
や内容物充填作業中等に容器同士の擦れ合いによる擦傷
が発生せず、商品価値を高めることができる。Further, in the second invention, a photosensitizer is added to the surface of the vinylidene chloride-based synthetic resin layer of the first invention, which is a synthetic resin having both hard surface forming ability and film forming ability. A stable coating synthetic resin layer can be formed by a simple process of applying a coating agent and subjecting it to ultraviolet irradiation, and the obtained polyester container has excellent gas barrier properties and water impermeability. With
A polyester container having excellent surface hardness can be obtained, and scratches due to rubbing of the containers do not occur during transportation, filling of contents, etc., and the commercial value can be increased.
Claims (5)
ステル製容器の胴部壁の少なくとも外側表面に、耐剥離
性処理を施した後、塩化ビニリデン系重合体5〜20重量
％の溶剤溶液からなるコーティング剤を塗布、乾燥して
被覆合成樹脂層を形成することを特徴とする熱可塑性ポ
リエステル製容器の処理方法。1. A peeling-resistant treatment is applied to at least an outer surface of a body wall of a thermoplastic polyester container that has been biaxially stretched, and then a vinylidene chloride polymer solution of 5 to 20% by weight is used as a solvent solution. A method for treating a container made of a thermoplastic polyester, which comprises applying the coating agent and drying it to form a coated synthetic resin layer.
のコーティング剤によるプライマー層を形成することを
特徴とする特許請求の範囲第１項記載の熱可塑性ポリエ
ステル製容器の処理方法。2. The method for treating a thermoplastic polyester container according to claim 1, wherein a primer layer is formed by a coating agent of a thermoplastic synthetic resin as the peeling resistance treatment.
ステル製容器の胴部壁の少なくとも外側表面に、耐剥離
性処理を施した後、塩化ビニリデン系重合体5〜20重量
％の溶剤溶液からなるコーティング剤を塗布、乾燥して
被覆合成樹脂層を形成し、次いで硬質表面形成能と透明
皮膜形成能とを兼備する合成樹脂に光増感剤が添加され
ているコーティング剤を塗布した後、これに紫外線照射
処理を施して第２の被覆合成樹脂層を形成することを特
徴とする熱可塑性ポリエステル製容器の処理方法。3. A peeling resistant treatment is applied to at least an outer surface of a body wall of a thermoplastic polyester container which has been biaxially stretched, and then a vinylidene chloride polymer solution of 5 to 20% by weight is used as a solvent. After forming a coating synthetic resin layer by applying a coating agent that becomes, and then applying a coating agent in which a photosensitizer is added to a synthetic resin having both hard surface forming ability and transparent film forming ability, A method for treating a thermoplastic polyester container, which comprises subjecting this to ultraviolet irradiation treatment to form a second coated synthetic resin layer.
テル製容器表面に、熱可塑性合成樹脂のコーティング剤
によるプライマー層を形成することを特徴とする特許請
求の範囲第３項記載の熱可塑性ポリエステル製容器の処
理方法。4. The thermoplastic polyester according to claim 3, wherein a primer layer is formed on the surface of the thermoplastic polyester container by a coating agent of a thermoplastic synthetic resin as the peeling resistance treatment. How to treat containers.
テル製容器表面に、表面活性化処理を施すことを特徴と
する特許請求の範囲第３項記載の熱可塑性ポリエステル
製容器の処理方法。5. The method for treating a thermoplastic polyester container according to claim 3, wherein a surface activation treatment is applied to the surface of the thermoplastic polyester container as the peeling resistance treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5210846A JPH082980B2 (en) | 1993-08-03 | 1993-08-03 | Processing method for thermoplastic polyester containers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5210846A JPH082980B2 (en) | 1993-08-03 | 1993-08-03 | Processing method for thermoplastic polyester containers |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57124142A Division JPH0611805B2 (en) | 1982-07-16 | 1982-07-16 | Processing method for thermoplastic polyester containers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06234874A JPH06234874A (en) | 1994-08-23 |
| JPH082980B2 true JPH082980B2 (en) | 1996-01-17 |
Family
ID=16596084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5210846A Expired - Lifetime JPH082980B2 (en) | 1993-08-03 | 1993-08-03 | Processing method for thermoplastic polyester containers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH082980B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5849392B2 (en) * | 1975-02-03 | 1983-11-04 | 東洋紡績株式会社 | Polyester Keihi Fuku Film |
| JPS5780434A (en) * | 1980-11-10 | 1982-05-20 | Yoshino Kogyosho Co Ltd | Method for treatment of bottle made of saturated polyester |
-
1993
- 1993-08-03 JP JP5210846A patent/JPH082980B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06234874A (en) | 1994-08-23 |
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