WO2021020548A1 - 樹脂被覆金属板、容器、及び評価方法 - Google Patents
樹脂被覆金属板、容器、及び評価方法 Download PDFInfo
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- WO2021020548A1 WO2021020548A1 PCT/JP2020/029382 JP2020029382W WO2021020548A1 WO 2021020548 A1 WO2021020548 A1 WO 2021020548A1 JP 2020029382 W JP2020029382 W JP 2020029382W WO 2021020548 A1 WO2021020548 A1 WO 2021020548A1
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- resin
- metal plate
- resin layer
- coated metal
- coated
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
- C09D167/03—Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the carboxyl - and the hydroxy groups directly linked to aromatic rings
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
Definitions
- the present invention relates to a resin-coated metal plate, a container, and an evaluation method.
- thermosetting resins for the purpose of corrosion protection.
- the coating method using a thermosetting resin has a problem that it takes a long time to dry the paint, so that not only the productivity is lowered, but also a large amount of energy is consumed and a large amount of solvent is discharged. Therefore, in order to solve these problems, many methods have been proposed in which a thermoplastic resin is laminated and coated on a metal plate.
- thermoplastic resin As a method of laminating and covering a metal plate with a thermoplastic resin, there is a method of heating a metal plate subjected to various surface treatments such as plating treatment, and then thermocompression bonding a thermoplastic resin film to the metal plate for laminating.
- the resin-coated metal material for containers is required to have basic characteristics such as workability, adhesion of the coating resin, corrosion resistance, etc., as well as characteristics related to the design such as appearance color tone stability.
- a phenomenon occurs in which the coating resin itself turns white and turbid during the retort sterilization treatment (hereinafter referred to as retort whitening). Since retort whitening greatly impairs the design of the outer surface of the container and reduces consumers' purchasing motivation, some improvement techniques are being studied.
- Patent Document 1 describes a method of preparing a resin composition containing a polyester resin having a high crystallization rate. In this method, it is considered that retort whitening is suppressed by forming a large number of fine crystals in the film during the retort sterilization treatment.
- Patent Document 2 describes a method in which a polyester resin-coated metal plate is heat-treated to control the crystal structure of the resin layer in the thickness direction.
- Patent Document 3 describes a method of controlling a crystal structure in the thickness direction of a resin layer by heat-treating a metal plate coated with an unstretched polyester resin film.
- Patent Document 1 has a problem that the corrosion resistance is inferior to that of the conventional polyester resin and the coating resin is expensive. Further, according to the method described in Patent Document 2, although the retort whitening can be suppressed, the crystallization of the polyester resin progresses too much, and the high adhesion currently required cannot be obtained. According to the method described in Patent Document 3, although the retort whitening and workability can be balanced, the retort whitening is sufficiently performed when the retort sterilization treatment is performed under severe conditions such as high temperature treatment and rapid cooling which have been carried out in recent years. It cannot be suppressed.
- the present invention has been made in view of the above problems.
- the purpose is to provide an inexpensive resin-coated metal plate that has the basic characteristics required for a resin-coated metal material for containers and has retort-whitening resistance that does not impair the design even if it is subjected to retort sterilization treatment under harsh conditions.
- Another object of the present invention is to provide a method for evaluating the retort whitening property of a resin-coated metal plate.
- the amount of movable amorphous measured by the temperature-modulated differential scanning calorimeter of the resin layer is 30% or more and 46% or less.
- a PET methylene group transformer in the vicinity of 1096 cm- 1 determined by laser Raman spectroscopic analysis, which is measured by incident the polarization plane of linearly polarized laser light perpendicular to the thickness direction on the thickness direction cross section of the resin coating layer.
- Intensity ratio of peak intensity (I 1096 ) due to structure to peak intensity (I 1119 ) due to Gauche structure of PET methylene group near 1119 cm- 1 determined by the laser Raman spectroscopic analysis method I 1096 / I 1119 is 1.1 or more and less than 1.5 at a position of 1 ⁇ m from the metal plate.
- the resin layer contains polyester resin as a main component.
- the resin in the resin layer is a biaxially stretched polyester resin, and 90 mol% or more is preferably polyethylene terephthalate.
- the container according to the present invention is a container formed of the resin-coated metal plate according to the present invention, and the resin layer is present at least on the outer surface side of the container.
- the evaluation method according to the present invention includes a step of predicting the retort whitening property of the resin-coated metal plate by the movable amorphous amount measured by the temperature-modulated differential scanning calorimeter.
- an inexpensive resin-coated metal having the basic characteristics required for a resin-coated metal material for containers and having retort-whitening resistance that does not impair the design even when retort sterilization treatment is performed under harsh conditions. Plates and containers can be provided. Further, according to the present invention, it is possible to provide an accurate evaluation method of the retort whitening property of the resin-coated metal plate.
- the metal plate used in the present invention will be described.
- an aluminum plate, a mild steel plate, or the like widely used as a material for cans can be used.
- a surface-treated steel sheet hereinafter referred to as TFS
- TFS surface-treated steel sheet
- the amount of TFS film adhered is not particularly limited, but from the viewpoint of adhesion after processing and corrosion resistance, the metal chromium layer is 70 to 200 mg / m 2 and the chromium hydroxide layer is 10 to 30 mg / m 2 in terms of Cr. Is desirable.
- the polyester resin layer of the present invention contains polyethylene terephthalate as a main component.
- polyethylene terephthalate is the main component means that 90 mol% or more of the constituent units of polyester is polyester, which is an ethylene terephthalate unit. More preferably, it is 95 mol% or more. When the ethylene terephthalate unit is 95 mol% or more, it is preferable in applications where heat resistance is required.
- Terephthalic acid as an acid component is indispensable for ensuring characteristics such as mechanical strength, heat resistance, and corrosion resistance, but further copolymerization with isophthalic acid improves processability and adhesion. Copolymerization of the isophthalic acid component with the terephthalic acid component in an amount of 5 to 10 mol% is suitable because the deep draw moldability and the adhesion after processing are improved.
- dicarboxylic acid components and glycol components may be copolymerized as long as the above characteristics are not impaired.
- dicarboxylic acid component include aromatic dicarboxylic acids such as diphenylcarboxylic acid, 5-sodium sulfoisophthalic acid and phthalic acid, oxalic acid, succinic acid, adipic acid, sebacic acid, dimer acid, maleic acid and fumaric acid.
- aromatic dicarboxylic acids such as diphenylcarboxylic acid, 5-sodium sulfoisophthalic acid and phthalic acid, oxalic acid, succinic acid, adipic acid, sebacic acid, dimer acid, maleic acid and fumaric acid.
- aliphatic dicarboxylic acids such as aliphatic dicarboxylic acids and cyclohexanedicarboxylic acids
- oxycarboxylic acids such as p-oxybenzoic acid.
- glycol components include aliphatic glycols such as propanediol, butanediol, pentandiol, hexanediol and neopentyl glycol, finger ring glycols such as cyclohexanedimethanol, and aromatics such as bisphenol A and bisphenol S.
- examples thereof include glycols, diethylene glycols and polyethylene glycols.
- a polyfunctional compound such as trimellitic acid, trimesic acid, or trimethylolpropane may be copolymerized as long as the effect of the present invention is not impaired.
- the polyester resin layer mainly composed of polyethylene terephthalate of the present invention has a movable amorphous amount of 30% or more and 46% or less obtained from the temperature-modulated differential scanning calorimeter measurement. This is the most important requirement in the present invention, and by defining the movable amorphous amount of the polyester resin layer after coating the metal plate in this way, the retort whitening resistance and the adhesion after molding, which are the objects of the present invention, are defined. Can be compatible with each other. The reason will be described below.
- the inventors of the present invention diligently studied the mechanism of retort bleaching. From the beginning of the retort sterilization process, the can is exposed to high-temperature steam, and a part of the steam permeates into the resin layer on the outer surface side and reaches the vicinity of the interface with the steel sheet.
- the temperature of the can contents is low at the initial stage of the retort sterilization treatment, when the permeated water vapor approaches the steel sheet, it condenses to generate blisters.
- polyester resins have significantly different properties depending on whether they are crystalline or amorphous. In amorphous, there are movable acrystals showing glass transition and rigid acrystals not showing glass transition, and it is effective to reduce the amount of movable acrystal to 46% or less in order to prevent retort whitening. I understand.
- the amount of movable amorphous is too small, the adhesion after molding deteriorates, but it was found that the amount of movable amorphous should be 30% or more. It was also found that it is possible to predict the retort whitening property from the value of the amount of movable amorphous.
- the crystalline state near the interface between the metal plate and the polyester resin is also an important requirement.
- the crystalline state is evaluated by a laser Raman spectroscopic analysis method in which the plane of polarization of linearly polarized laser light is vertically incident on the cross section of the polyester resin coating layer in the thickness direction and measured.
- the peak intensity near 1096 cm -1 due to the transformer structure of the PET methylene group (I 1096 ) and the peak intensity near 1119 cm -1 due to the Gauche structure (I 1119 ) are measured. .. It is necessary that these ratios I 1096 / I 1119 are 1.1 or more and less than 1.5.
- the molecular structure of PET includes a trans structure with high molecular chain order and a gauche structure with low order. It is presumed that if there are many transformer structures in the PET resin, the order of the PET molecules is high as a whole.
- the abundance ratio of the transformer structure and the Gauche structure can be measured by the intensity ratio of the Raman spectrum, and the order can be evaluated by the magnitude of this intensity ratio.
- a more ordered structure can be obtained, especially in the region of the molten layer close to the metal plate. If the structure is more ordered, the barrier property of water vapor at the time of retorting becomes high, and the retort whitening resistance is excellent. If the intensity ratio I 1096 / I 1119 is less than 1.1 at a distance of 1 ⁇ m from the metal plate, the order of the molecular chains is low, the barrier property of water vapor is poor, and the retort whitening resistance is poor. When the strength ratio I 1096 / I 1119 is 1.5 or more, the retort whitening resistance is excellent, but the order of the molecular chains becomes excessively high, and the adhesion between the metal plate and the resin is weakened.
- a variety of color tones can be imparted to the resin coating layer of the present invention by adding a pigment.
- the pigment is directly added to the resin for coloring, there is no problem that the color tone is lost even in the container molding process, and a good appearance can be maintained.
- paint printing is generally performed after container molding, a part of the process can be omitted by forming a colored resin layer, which reduces costs and suppresses the generation of organic solvents and carbon dioxide. Can be done.
- the pigment to be added it is necessary to be able to exhibit excellent design after container molding, and from this viewpoint, inorganic pigments such as titanium dioxide, anthraquinone-based, isoindolinone-based, benzimidazolone-based, and quinophthalone-based pigments are required. , Condensation azo type and other organic pigments can be used.
- the resin layer when the above organic pigment is added is preferably not the uppermost layer.
- the organic pigment has a characteristic that it does not easily bleed on the surface of the resin layer even after undergoing heat treatment such as during retort sterilization treatment. However, by providing an additive-free layer of 0.5 ⁇ m or more on the resin layer to which the pigment is added, Bleedout can be surely suppressed.
- the amount of at least one of anthraquinone-based, isoindolinone-based, benzimidazolone-based, quinophthalone-based, and condensed azo-based organic pigments added is 0.1 to 5% by mass ratio with respect to the resin layer. Is preferable. If the addition amount is less than 0.1%, the color development is poor and unsuitable. Further, when the addition amount exceeds 5.0%, the transparency becomes poor and the color tone lacks brilliance.
- the method for producing the resin layer is not particularly limited.
- an unstretched sheet can be obtained by drying the raw material resin pellets as necessary, supplying them to a known fused deposition modeling extruder, extruding them into a sheet from a slit-shaped die, bringing them into close contact with a casting drum, and cooling and solidifying them. ..
- a biaxially stretched film can be obtained by stretching this unstretched sheet in the longitudinal direction and the width direction of the film.
- the draw ratio can be arbitrarily set according to the degree of orientation, strength, elastic modulus, etc.
- a sequential biaxial stretching method of stretching in the longitudinal direction and then stretching in the width direction, and a simultaneous biaxial stretching method of stretching in the longitudinal direction and the width direction at substantially the same time are preferable.
- laminating a method of producing a resin-coated metal plate by heat-sealing (hereinafter referred to as laminating) a resin layer (film) to a metal plate.
- a method can be used in which a metal plate is heated to a temperature exceeding the melting point of the film, and a resin film is brought into contact with both sides of the resin film using a pressure-bonding roll (hereinafter referred to as a laminate roll) for laminating.
- the laminating conditions may be appropriately set so as to obtain the resin layer specified in the present invention, and an example of suitable manufacturing conditions will be described.
- the surface temperature of the metal plate at the start of laminating may be Tm (melting point) (° C.) or higher of the resin layer in contact with the metal plate. Specifically, the temperature is controlled in the range of Tm to Tm + 40 ° C. of the resin layer.
- Tm melting point
- Tm + 40 ° C. of the resin layer By setting the surface temperature of the metal plate to Tm or more of the resin layer, the resin layer melts and wets the surface of the metal plate, and good adhesion to the metal plate can be ensured.
- Tm + 40 ° C. or lower the resin layer can be prevented from being excessively melted and the resin layer can be prevented from adhering to the laminate roll, and the crystal structure of the surface resin layer can be kept within the specified range of the present invention. It becomes possible to control. It is preferably Tm to Tm + 25 ° C, and more preferably Tm to Tm + 15 ° C.
- the surface temperature of the laminate roll in contact with the resin layer is controlled in the range of Tg to Tg + 80 ° C. of the resin layer. Adjusting the contact time (nip time) with the laminate roll is also an important factor. The nip time may be controlled in the range of 10 to 20 msec.
- the crystal structure of the resin layer specified by the present invention can be realized.
- the inside of the roll may be water-cooled. By circulating cooling water in the roll, it is possible to control the temperature during film bonding.
- the temperature of the resin layer before laminating may be controlled in the range of Tg to Tg + 30 ° C.
- quenching water cooling
- the time to quench is preferably limited to 1.0 seconds or less, preferably 0.7 seconds or less.
- the water temperature of the quench should be at least Tg or less of the resin layer.
- the manufactured laminated metal plate is heated after laminating.
- the heating method can be arbitrarily selected from a hot air furnace, infrared rays, near infrared rays, an induction heater, and the like.
- the target temperature will not be reached in less than 5 seconds, so heating with infrared rays, near infrared rays, or an induction heater is preferable. Further, heating by infrared rays or near infrared rays is more preferable because the heat equalizing property in the width direction and the longitudinal direction of the metal plate can be improved by devising the arrangement of each emitter and the output of each emitter. Further, in the case of near infrared rays, the heating efficiency is high because the wavelength is close to the infrared absorption wavelength of the steel sheet. In order to ensure short-time heating, it is advisable to cool after heating.
- the cooling method is not particularly limited, but water cooling may be performed in the same manner as after laminating.
- a melt-extruded laminate in which a molten resin is coated on the surface of a metal plate can also be applied, but a preferable crystal structure can be easily obtained by coating the metal plate after forming the film.
- thermocompression bonding lamination method (metal Cr layer: 120 mg / m 2 , Cr oxide layer: 10 mg / m 2 in terms of metal Cr) using T3CA with a thickness of 0.22 mm as the original plate as the metal plate, both sides of the TFS are subjected to the thermocompression bonding lamination method.
- the specific laminating conditions were the metal plate temperature and nip time shown in Table 1. Then, 1 second after thermocompression bonding, it was cooled with water to remove water droplets on the surface once, and then heated after lamination under the conditions shown in Table 1.
- the resin coating layer is formed on both sides by immersing it in a water tank containing water at 30 ° C. for 3 seconds to cool it, and then removing water droplets on the surface again.
- a coated resin-coated metal plate was obtained.
- Table 1 shows the physical characteristics of the obtained resin-coated metal plate.
- Movable amorphous amount (%) ⁇ Cp / ⁇ Cp (a) ⁇ ⁇ 100 ...
- ⁇ Cp Specific heat difference before and after the glass transition point after laminating or heat treatment
- Adhesion after molding A peel test was conducted at a tensile speed of 30 mm / min using a can after molding, and the adhesion per width of 15 mm was evaluated according to the following criteria.
- the evaluation target is the can body on the outer surface of the can.
- the evaluation results are shown in Table 1.
- an inexpensive resin-coated metal having the basic characteristics required for a resin-coated metal material for containers and having retort-whitening resistance that does not impair the design even when retort sterilization treatment is performed under harsh conditions. Plates and containers can be provided. Further, according to the present invention, it is possible to provide an accurate evaluation method of the retort whitening property of the resin-coated metal plate.
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- Chemical Kinetics & Catalysis (AREA)
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- Materials Engineering (AREA)
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Abstract
Description
冷間圧延、焼鈍、調質圧延を施した厚さ0.18mm・幅977mmからなる鋼板を、脱脂、酸洗後、クロムめっきを行い、クロムめっき鋼板(TFS)を製造した。クロムめっきは、CrO3、F-、SO4 2-を含むクロムめっき浴でクロムめっき、中間リンス後、CrO3、F-を含む化成処理液で電解した。その際、電解条件(電流密度・電気量等)を調整して金属クロム付着量とクロム水酸化物付着量を、Cr換算でそれぞれ120mg/m2、15mg/m2に調整した。
表1に示す成分比率となるように重合したポリエステル樹脂を常法に従い、乾燥・溶融させ、Tダイより共押出した後、冷却ドラム上で冷却固化させ、未延伸フィルムを得た。その後、二軸延伸・熱固定して二軸延伸ポリエステルフィルムを得た。なお、一部水準では、延伸しないままとし、表1には無延伸と記載した。
金属板として厚さ0.22mmのT3CAを原板としたTFS(金属Cr層:120mg/m2、Cr酸化物層:金属Cr換算で10mg/m2)を用い、熱圧着ラミネート法によりTFSの両面に樹脂フィルムを被覆した。具体的なラミネート条件は、表1に示す金属板温度及びニップ時間とした。その後、熱圧着から1秒経過後に水冷し一度表面の水滴を除去してから、表1に示す条件でラミネート後加熱を施した。加熱炉を出た後は、表1に記載の時間経過後に30℃の水を溜めた水槽へ3秒浸漬させて冷却した後、再び表面の水滴を除去することで、両面に樹脂被覆層を被覆した樹脂被覆金属板を得た。得られた樹脂被覆金属板の物性を表1に示す。
以上により得られた樹脂被覆金属板及び被覆樹脂層について以下の特性を測定、評価した。測定、評価方法を以下に示す。
ティー・エイ・インスツルメント社製熱分析装置「DSC Q100」を用いて、温度範囲0℃~200℃、昇温速度2℃/min、振幅0.5℃、周波数40Hz、窒素雰囲気下でラミネート後フィルム又は熱処理後フィルムのガラス転移点前後の比熱を測定し、以下に示す数式(1)により可動非晶量を算出した。算出結果を表1に示す。
ΔCp:ラミネート後又は熱処理後のガラス転移点前後の比熱差
ΔCp(a):完全非晶物のガラス転移点前後の比熱差
ナノフォトン社 RAMAN forceを用いて、レーザーラマン分光分析によりフィルム断面の金属板から1μm位置のピーク強度を測定した。レーザー波長は532nmで、100倍の対物レンズを用いた。また、回折格子は600gr/mm、焦点距離は550mmとした。算出したI1096/I1119を表1に示す。
ラミネート金属板を円盤状に打ち抜き、市販缶の底部に磁石で固定した。その後、缶底部を下向きにして、蒸気式レトルト殺菌炉の中に配置し、125℃で90分間、レトルト殺菌処理を実施した。処理後、缶底部に固定したサンプルの外観変化を以下の基準で評価した。評価結果を表1に示す。
○:ごくわずかな曇りあり
△:外観に曇りあり
×:外観のほぼ全面が白濁(白化発生)
成形後の缶を用いて、引張速度30mm/minでピール試験を行い、幅15mmあたりの密着力を以下の基準で評価した。評価対象は、缶外面の缶胴部である。評価結果を表1に示す。
〇:ごくわずかに剥離
△:剥離するが程度は小さい
×:完全に剥離
表1に示すように、発明例は、耐レトルト白化性に優れ、且つ、他の特性も良好であるのに対して、本発明の範囲を外れる比較例は、耐レトルト白化性又は他の特性が劣っていることが確認された。
Claims (5)
- 金属板の少なくとも片面が樹脂層で被覆されており、当該樹脂層の温度変調示差走査熱量計で測定される可動非晶量が30%以上46%以下であり、前記樹脂被覆層の厚さ方向断面に、直線偏光レーザー光の偏光面を厚さ方向に垂直に入射して測定したレーザーラマン分光分析法から求められる1096cm-1近傍のPETメチレン基のトランス構造に起因するピークの強度(I1096)と前記レーザーラマン分光分析法から求められる1119cm-1近傍のPETメチレン基のゴーシュ構造に起因するピークの強度(I1119)との強度比I1096/I1119が金属板からの距離1μmの位置で1.1以上1.5未満である、樹脂被覆金属板。
- 前記樹脂層がポリエステル樹脂を主成分とする、請求項1に記載の樹脂被覆金属板。
- 前記樹脂層中の樹脂は二軸延伸ポリエステル樹脂であり、90mol%以上がポリエチレンテレフタレートである、請求項2に記載の樹脂被覆金属板。
- 請求項1~3のうち、いずれか1項に記載の樹脂被覆金属板で成形された容器であって、前記樹脂層が少なくとも容器の外面側に存在する、容器。
- 温度変調示差走査熱量計で測定される可動非晶量により樹脂被覆金属板のレトルト白化性を予測するステップを含む、評価方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CA3145079A CA3145079A1 (en) | 2019-07-31 | 2020-07-31 | Resin coated metal sheet, container, and method of evaluation |
US17/627,201 US20220315794A1 (en) | 2019-07-31 | 2020-07-31 | Resin coated metal sheet, container, and method of evaluation |
MX2022001015A MX2022001015A (es) | 2019-07-31 | 2020-07-31 | Hoja metalica recubierta con resina, contenedor y metodo de evaluacion. |
JP2020560512A JP7111180B2 (ja) | 2019-07-31 | 2020-07-31 | 樹脂被覆金属板、容器、及び評価方法 |
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JP2019140453 | 2019-07-31 | ||
JP2019-140453 | 2019-07-31 |
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US (1) | US20220315794A1 (ja) |
JP (1) | JP7111180B2 (ja) |
CA (1) | CA3145079A1 (ja) |
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WO2022202931A1 (ja) * | 2021-03-26 | 2022-09-29 | Jfeスチール株式会社 | 容器用樹脂被覆金属板 |
Citations (5)
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JP2005132072A (ja) * | 2003-10-31 | 2005-05-26 | Jfe Steel Kk | 容器用ポリエステル樹脂ラミネート金属板 |
JP2010105263A (ja) * | 2008-10-30 | 2010-05-13 | Jfe Steel Corp | 容器用樹脂被覆金属板 |
JP2011202156A (ja) * | 2010-03-04 | 2011-10-13 | Toray Ind Inc | 二軸延伸ポリエステルフィルム |
WO2016147767A1 (ja) * | 2015-03-13 | 2016-09-22 | 東レ株式会社 | 光学用ポリエステルフィルム及びそれを用いた偏光板 |
JP2018184508A (ja) * | 2017-04-25 | 2018-11-22 | 東レ株式会社 | ポリエステルフィルム。 |
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2020
- 2020-07-31 US US17/627,201 patent/US20220315794A1/en active Pending
- 2020-07-31 WO PCT/JP2020/029382 patent/WO2021020548A1/ja active Application Filing
- 2020-07-31 CA CA3145079A patent/CA3145079A1/en not_active Abandoned
- 2020-07-31 JP JP2020560512A patent/JP7111180B2/ja active Active
- 2020-07-31 MX MX2022001015A patent/MX2022001015A/es unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2005132072A (ja) * | 2003-10-31 | 2005-05-26 | Jfe Steel Kk | 容器用ポリエステル樹脂ラミネート金属板 |
JP2010105263A (ja) * | 2008-10-30 | 2010-05-13 | Jfe Steel Corp | 容器用樹脂被覆金属板 |
JP2011202156A (ja) * | 2010-03-04 | 2011-10-13 | Toray Ind Inc | 二軸延伸ポリエステルフィルム |
WO2016147767A1 (ja) * | 2015-03-13 | 2016-09-22 | 東レ株式会社 | 光学用ポリエステルフィルム及びそれを用いた偏光板 |
JP2018184508A (ja) * | 2017-04-25 | 2018-11-22 | 東レ株式会社 | ポリエステルフィルム。 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022202931A1 (ja) * | 2021-03-26 | 2022-09-29 | Jfeスチール株式会社 | 容器用樹脂被覆金属板 |
JP7176668B1 (ja) * | 2021-03-26 | 2022-11-22 | Jfeスチール株式会社 | 容器用樹脂被覆金属板 |
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JPWO2021020548A1 (ja) | 2021-09-13 |
CA3145079A1 (en) | 2021-02-04 |
MX2022001015A (es) | 2022-02-22 |
US20220315794A1 (en) | 2022-10-06 |
JP7111180B2 (ja) | 2022-08-02 |
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