WO2020138643A1 - 리드필름을 포함하는 포장용기 및 이의 제조방법 - Google Patents

리드필름을 포함하는 포장용기 및 이의 제조방법 Download PDF

Info

Publication number
WO2020138643A1
WO2020138643A1 PCT/KR2019/011324 KR2019011324W WO2020138643A1 WO 2020138643 A1 WO2020138643 A1 WO 2020138643A1 KR 2019011324 W KR2019011324 W KR 2019011324W WO 2020138643 A1 WO2020138643 A1 WO 2020138643A1
Authority
WO
WIPO (PCT)
Prior art keywords
molded body
packaging container
temperature
manufacturing
foam sheet
Prior art date
Application number
PCT/KR2019/011324
Other languages
English (en)
French (fr)
Korean (ko)
Inventor
최종한
함진수
이광희
허미
김우진
하상훈
Original Assignee
주식회사 휴비스
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 휴비스 filed Critical 주식회사 휴비스
Priority to JP2020543107A priority Critical patent/JP7183284B2/ja
Priority to CN201980019870.4A priority patent/CN111886185B/zh
Publication of WO2020138643A1 publication Critical patent/WO2020138643A1/ko

Links

Images

Classifications

    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/34—Coverings or external coatings
    • B65D25/36—Coverings or external coatings formed by applying sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/005—Additives being defined by their particle size in general
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

Definitions

  • the present invention relates to a packaging container comprising a lead film and a method for manufacturing the same.
  • the foamed food packaging container is a product that is extruded by mixing polystyrene with a foam gas, which has an advantage of maintaining shape, insulation, and price competitiveness because it can maintain a relatively thick thickness.
  • foamed foam has the disadvantage that harmful substances are detected at high temperatures.
  • non-foaming food packaging device a product made of heat stable polypropylene in a film form is used.
  • a non-foamed food packaging container has the advantage of low form change rate at high temperature and no harmful substances detected.
  • disadvantages of high price and poor insulation there are disadvantages of high price and poor insulation.
  • food packaging container related companies are researching and developing food packaging containers with all of convenience, safety, eco-friendly performance, and price competitiveness, and the applicant is a heat-resistant material having excellent heat resistance and strength, a manufacturing method thereof, and a packaging including the same A container (Korean Patent No. 10-1667999) and a resin foam having excellent cold resistance, and a packaging container including the same (Korean Patent No. 10-1826785) have been developed.
  • the packaging container is manufactured by using a polyester resin as a resin foam, which is eco-friendly, lightweight, and at the same time can realize high strength and heat resistance, and has excellent durability in accordance with temperature changes.
  • the food container has a disadvantage of insufficient adhesion. Therefore, it is necessary to develop a lead film having excellent adhesion to a polyester foam.
  • the present invention is to provide a packaging container comprising a lead film and a method of manufacturing the same.
  • a molded body of a container structure comprising a polyethylene terephthalate resin foam sheet having an average cell size of 100 to 500 ⁇ m, and satisfying Equation 1 below;
  • a flange extending outward along an outer periphery of the opening of the molded body
  • the foamed sheet has a surface roughness (center average roughness: Ra) of 3 or less,
  • H represents the depth of the receiving portion in the molded body including the receiving portion and the opening, 1 cm ⁇ H ⁇ 10 cm,
  • D represents the diameter of the opening in the molded body, and the unit is cm.
  • the forming step is a method of manufacturing a packaging container characterized in that the sheet is subjected to heat so that the surface temperature is 140 to 160°C, and the molded body is molded by setting the surface temperature of the female mold and the male mold to 60 to 200°C. to provide.
  • the packaging container according to the present invention includes a polyethylene terephthalate resin foam sheet having a compact cell size with an average cell size of 100 to 500 ⁇ m, so that the surface roughness of the foam sheet can be reduced. It is possible to improve the adhesion of the lead film. Specifically, the adhesive strength between the molded body and the lead film is 500 to 1,500 gf based on KS M 3725, which can provide excellent adhesion between the molded body and the lead film. Accordingly, airtightness through the lead film may be improved.
  • FIG. 1 is a cross-sectional view of a molded body according to the present invention.
  • FIG. 2 is a view sequentially showing a method of manufacturing a molded body according to the present invention.
  • the present invention relates to a method for manufacturing a packaging container and a molded body including a lead film.
  • the packaging container according to the present invention includes a polyethylene terephthalate resin foam sheet having a compact cell size with an average cell size of 100 to 500 ⁇ m, so that the surface roughness of the foam sheet can be reduced, so that the molded body can be produced even after production of the molded body.
  • the adhesion of the lead film is 500 to 1,500 gf, and thus excellent adhesion between the molded body and the lead film can be provided. Accordingly, airtightness through the lead film may be improved.
  • a polyethylene terephthalate resin it is environmentally friendly and can be easily reused.
  • FIG. 1 is a cross-sectional view of a molded body according to the present invention
  • FIG. 2 is a view sequentially showing a method of manufacturing the molded body according to the present invention.
  • a molded body according to the present invention will be described in detail with reference to FIGS. 1 and 2.
  • the present invention includes a polyethylene terephthalate resin foam sheet having an average cell size of 100 to 500 ⁇ m, and a molded body 10 having a container structure satisfying Equation 1 below; A flange 13 extending outward along the outer periphery of the opening of the molded body 10; And a lead film attached to the flange 13, wherein the foamed sheet has a surface roughness (centre average roughness: Ra) of 3 or less, and the adhesion between the molded body 10 and the lead film is KS M 3725. It provides a packaging container characterized by 500 to 1,500 gf as a standard:
  • H represents the depth of the receiving portion in the molded body including the receiving portion and the opening, 1 cm ⁇ H ⁇ 10 cm,
  • D represents the diameter of the opening in the molded body, and the unit is cm.
  • the molded body 10 has a shape of a cup or a bowl, and is provided with an accommodation space for accommodating instant food.
  • the molded body includes a flange 13 extending outward along the outer periphery of the opening, and the lead film may be attached to the flange 13.
  • the lead film is attached to the top of the molded body containing the instant food, and serves to prevent the instant food from being exposed to the outside.
  • the lead film of the present invention may have an adhesive strength between the molded body and 500 to 1,500 gf based on KS M 3725, and thus has an advantage of providing excellent adhesion between the molded body and the lead film. Accordingly, the packaging container of the present invention can improve the airtightness through the lead film.
  • the adhesive force between the molded body and the lead film is 500 to 1,200 gf, 500 to 1,000 gf, 500 to 800 gf, 500 to 600 gf, 600 to 1,500 gf, 800 to 1,500 gf, 1,000 to 1,500 gf, or 1,200 to It can be 1,500 gf.
  • the lead film may include an aluminum foil layer, an adhesive layer applied to one surface of the aluminum foil layer, and a printing layer applied to the other surface of the aluminum foil layer.
  • the lead film may be fused to the flange of the molded body through the packaging process of the packaging container. Specifically, when the aluminum layer is instantaneously heated, the adhesive layer of the heated part is melted and fused to the flange of the molded body so that the top of the molded body (flange ).
  • the lead film may be composed of 3 to 7 layers, and may include an adhesive layer on an inner front surface in contact with the top of the molded body, and the adhesive layer may include ethyl-methacrylate (ethyl). -methacrylate), polyethylene (polyethylene), polypropylene (polypropylene), and may include one or more of polyethylene terephtalate (polyethylene terephtalate), for example, the adhesive layer may be ethyl-methacrylate (EMA) .
  • EMA ethyl-methacrylate
  • the adhesive layer having the improved adhesive strength as described above can not only be easily heat-sealed to the top of the molded body, but also provides excellent airtightness, etc. when applied to a packaging container by maintaining a certain level of adhesion between the molded body 10 and the lead film. There is an advantage to do.
  • the molded body 10 includes a bottom portion 11 and a wall portion 12 with an open top along the circumference of the bottom portion 11, H/ in Equation 1 D values may be 0.01 to 2, 0.01 to 1.5, 0.01 to 1.3, 0.05 to 1.2, 0.1 to 1.1, 0.3 to 1.0, 0.4 to 0.9, 0.5 to 0.8, 0.55 to 0.7, or 0.6 to 0.65.
  • the H value in Equation 1 may be 1 to 10 cm.
  • the diameter D of the opening of the molded body 10 may be 10 cm, and the depth H of the receiving portion may be 3 cm.
  • the molded article 10 according to the present invention includes a polyethylene terephthalate resin foam layer and a polyethylene terephthalate resin layer coated on one or both sides of the foam layer, thereby providing a molded body 10 satisfying the following Equation 2: can do.
  • T 1 is the temperature of the outer surface of the molded body measured at a temperature of 20° C. and 1 atm, when the molded body contains 100° C. of water, and after 1 minute,
  • T 2 is the temperature of the water inside the molded body measured when 1 minute elapsed after containing 1 hour of water at 100 °C in the molded body 10 at 20°C and 1 atm.
  • the molded body 10 according to the present invention includes a polyethylene terephthalate resin foam sheet having a compact cell size with an average cell size of 100 to 500 ⁇ m, thereby indicating excellent thermal barrier properties. Specifically, at room temperature (20° C.) and 1 atmosphere, the temperature of the water inside the molded body 10 at the time when 1 minute has elapsed, while 70% (v/v) of 100° C. water is contained inside the molded body 10 And the temperature difference of the outer surface of the molded body 10 may be 10 °C or more. This indicates that the molded article 10 according to the present invention is excellent in heat shielding properties. Specifically, at a time when 1 minute elapses in a state where 70% (v/v) of water at 100° C. is contained in the manufactured molded article 10 (10) It is the temperature difference between the temperature of the water accommodated inside and the outer surface of the molded body 10.
  • the molded body 10 in the state where 70% (v/v) of water at 100° C. is contained in the molded body 10 according to the present invention, when the external temperature of the molded body 10 is 40° C. after 1 minute, the molded body ( 10) The temperature of water accommodated therein may be 95°C.
  • the molded article 10 according to the present invention maintains a relatively high temperature difference between the temperature of the water accommodated inside the molded body 10 and the outer surface of the molded body 10 under the above conditions, and thus it can be seen that the heat shielding property is excellent. It shows the effect of effectively improving.
  • the polyethylene terephthalate resin foam sheet of the present invention may include 0.1 to 10% by weight of inorganic particles, the average size of the inorganic particles may be 0.05 to 60 ⁇ m.
  • the foam sheet is 0.1 to 8% by weight, 0.1 to 6% by weight, 0.1 to 4% by weight, 0.1 to 2% by weight, 0.1 to 1% by weight, 1 to 10% by weight, 2 to 10% by weight, 4 to 10% by weight, 6 to 10% by weight, or may include 8 to 10% by weight of inorganic particles
  • the average size of the inorganic particles is 0.05 to 50 ⁇ m, 0.05 to 30 ⁇ m, 0.05 to 10 ⁇ m, 0.05 To 5 ⁇ m, 0.05 to 1 ⁇ m, 1 to 60 ⁇ m, 5 to 60 ⁇ m, 20 to 60 ⁇ m, or 40 to 60 ⁇ m.
  • the inorganic particles may include one or more of Talc, CaCO 3 , TiO 2 , and SiO.
  • the polyethylene terephthalate resin foam sheet may include 0.5 to 9% by weight of calcium carbonate (CaCO 3 ).
  • the calcium carbonate (CaCO 3 ) is an inorganic particle, and by including the inorganic particle as described above, the surface of the polyethylene terephthalate resin foam layer of the present invention can be uniform and exhibit excellent thermoformability.
  • the thermal conductivity of the calcium carbonate may be 1.0 to 3.0 kcal/mh °C. Specifically, the thermal conductivity of calcium carbonate may be 1.2 to 2.5 kcal/mh°C, 1.5 to 2.2 kcal/mh°C, or 1.8 to 2.0 kcal/mh°C. More specifically, the thermal conductivity of calcium carbonate may be 1.5 to 2.5 kcal/mh°C or 1.8 to 2.3 kcal/mh°C. As described above, the foamed sheet containing calcium carbonate has a uniform surface by exhibiting excellent thermal conductivity, and can exhibit excellent thermoformability.
  • the content of calcium carbonate may be 0.5 to 9% by weight.
  • the content of calcium carbonate is 0.5 to 8 wt%, 0.6 to 7 wt%, 0.7 to 6 wt%, 0.8 to 5 wt%, 0.9 to 4 wt%, 1.0 to 3.0 wt%, 2 wt% to 3.5 wt% %.
  • it may be 1.0% by weight or 3% by weight.
  • the density of the foam sheet may be an average of 100 to 500 kg / m 3 .
  • the density of the foam sheet is average 100 to 450 kg/m 3 , 100 to 400 kg/m 3 , 100 to 300 kg/m 3 , 100 to 200 kg/m 3 , 150 to 500 kg/m 3 , 200 To 500 kg/m 3 , 300 to 500 kg/m 3 , or 400 to 500 kg/m 3 .
  • the foam sheet according to the present invention may have a high temperature elongation at 325% to 375% under conditions of 10 seconds at 200°C.
  • the foam sheet may have a high temperature elongation at 200°C for 10 seconds under conditions of 330% to 360%, 345% to 370%, or 335% to 360%. More specifically, the foam sheet may have a high temperature elongation of 345% to 355% at a condition of 200°C for 10 seconds.
  • the foam sheet according to the present invention can exhibit excellent processability.
  • the total elution amount is 30 ppm or less, and antimony germanium, terephthalic acid, isophthalic acid, acetaldehyde materials are not detected, and residual standards are measured. At the time, it is characterized in that volatile substances are not detected.
  • the molded body 10 according to the present invention by using an environmentally friendly material, polyester resin, the standard and specification for notification of standards and specifications for packaging of devices and containers issued by the Ministry of Food and Drug Safety Notification No. 2015-7
  • the substances of concern described in may be adjusted within an allowable range.
  • the molded body according to the present invention has a barrier performance and a hydrophilic function. Or it can have a waterproof function, surfactants, hydrophilic agents, heat stabilizers, waterproofing agents, cell size expanders, infrared attenuators, plasticizers, fire retardant chemicals, pigments, elastomers, extrusion aids, antioxidants, antioxidants and UV absorbers It may further include one or more functional additives selected from the group consisting of.
  • the resin foam sheet of the present invention may include a thickener, a heat stabilizer and a foaming agent.
  • the thickener is not particularly limited, but in the present invention, for example, pyromellitic dianhydride (PMDA) may be used.
  • PMDA pyromellitic dianhydride
  • the heat stabilizer may be an organic or inorganic compound.
  • the organic or inorganic compound may be, for example, phosphoric acid and its organic ester, phosphorous acid and its organic ester.
  • the thermal stabilizer is a commercially available material, and may be phosphoric acid, alkyl phosphate or aryl phosphate.
  • the thermal stabilizer may be triphenyl phosphate, but is not limited thereto, and can be used without limitation within a typical range as long as it can improve the thermal stability of the resin foam sheet.
  • foaming agent examples include N 2 , CO 2 , Freon, butane, pentane, neopentane, hexane, isohexane, heptane, isoheptane, methyl chloride, or a physical foaming agent or azodicarbonamide compound, P, P'-oxybis(benzenesulfonyl hydrazide) [P,P'-oxy bis (benzene sulfonyl hydrazide)] compound, N,N'-dinitrosopentamethylenetetraamine (N,N'-dinitroso pentamethylene There are chemical blowing agents such as tetramine)-based compounds, and specifically, CO 2 may be used in the present invention.
  • the present invention provides a method for manufacturing a molded body.
  • FIG. 2 is a view sequentially showing a method of manufacturing a molded body according to the present invention.
  • the present invention the step of placing the foam sheet between the female mold and the male mold of the molding apparatus; Pressing the female mold and the male mold to form a molded body into a concave shape with an upper opening; And attaching a lead film to the opening of the molded body, wherein the forming step applies heat so that the sheet surface temperature is 140 to 160°C, and the surface temperature of the female mold and the male mold is 60 to 200°C.
  • the forming step applies heat so that the sheet surface temperature is 140 to 160°C, and the surface temperature of the female mold and the male mold is 60 to 200°C.
  • the foam sheet comprising the steps of preparing a foam sheet by cooling after extrusion foaming a resin mixture comprising a polyethylene terephthalate resin and inorganic particles, the step of cooling after the extrusion foaming temperature of -10 to 20 °C It can be characterized by performing in the range.
  • the foam sheet can be prepared by extrusion foaming a polyester resin mixture. The extruded foam is melted by heating the resin, and by continuously extruding and foaming the resin melt, the process steps can be simplified, mass production is possible, cracks between beads when foaming beads, and granular destruction phenomenon, etc. Can be prevented.
  • the step of cooling after the extrusion foaming may be to cool the inner side of the foam sheet with a mandrel made of metal of the foaming device, and the outer side of the foaming sheet with cooling air of the foaming device, wherein the cooling is -10 to 20°C. It may be performed in the temperature range. For example, the cooling may be performed at -10 to 15°C, -10 to 10°C, -10 to 5°C, 5 to 20°C, or 15 to 20°C.
  • the foam sheet may include 0.1 to 10% by weight of inorganic particles, the average size of the inorganic particles may be 0.05 to 60 ⁇ m.
  • the foam sheet is 0.1 to 8% by weight, 0.1 to 6% by weight, 0.1 to 4% by weight, 0.1 to 2% by weight, 0.1 to 1% by weight, 1 to 10% by weight, 2 to 10% by weight, 4 to 10% by weight, 6 to 10% by weight, or may include 8 to 10% by weight of inorganic particles
  • the average size of the inorganic particles is 0.05 to 50 ⁇ m, 0.05 to 30 ⁇ m, 0.05 to 10 ⁇ m, 0.05 To 5 ⁇ m, 0.05 to 1 ⁇ m, 1 to 60 ⁇ m, 5 to 60 ⁇ m, 20 to 60 ⁇ m, or 40 to 60 ⁇ m.
  • the inorganic particles may include one or more of Talc, CaCO 3 , TiO 2 , and SiO 2 .
  • the step of processing the step of placing the foam sheet 1 between the female mold 21 and the male mold 22 of the molded body forming apparatus 20 and pressing the male mold 22 to press the molded body 10 Provides a molding step.
  • the foam sheet 1 disposed between the female mold 21 and the male mold 22 may be molded into a molded body 10 by thermal molding.
  • the thermoforming include vacuum forming, pressure forming or vacuum pressure forming using a combination of vacuum forming and pressure forming, using a male mold (plug) or using the male mold 22, followed by vacuum and/or pressure forming. Can be thermoformed.
  • FIG. 2(a) shows an arrangement step of placing the foam sheet 1 between the female mold 21 and the male mold 22 of the molding apparatus before molding the foam sheet 1.
  • FIG. 2(b) is a view showing a stretching process and a thermal process.
  • the male mold 22 is lowered to stretch the foam sheet 1, and the female mold 21 is It is molded into the shape of the cavity of the female mold 21 by vacuum suction, and heat is applied.
  • Fig. 2(c) shows a molded body which is a final molded product by shaping the foam sheet 1 being molded into the shape of the male mold 22 by pressurization of the male mold 22 and compressed air from the female mold 21. 10) is molded.
  • the molded body 10 can be taken out by raising the male mold 22 after cooling.
  • heat may be applied so that the surface temperature of the sheet is 140 to 160°C, and the molded body may be molded by setting the surface temperatures of the female mold 21 and the male mold 22 to 60 to 200°C. .
  • the surface of the male mold 22 and the surface temperature of the cavity of the female mold 21 may be different.
  • the surface temperature of the male mold 22 may be 250 to 280°C, 255 to 275°C, 260 to 270°C, or 265°C, respectively
  • the cavity surface temperature of the female mold is 200 to 250°C, 210 to 240°C , 215 to 235°C, 220 to 230°C, or 225°C.
  • the surface temperature of the male mold 22 may be 265°C
  • the surface temperature of the female mold 21 may be 225°C
  • the male mold 22 may be a female mold 22 for 0.5 to 15 seconds.
  • the female mold 21 may have a structure in which a decompression hole 23 for decompressing a cavity that is an internal space is formed on one side.
  • the temperature of the cooling step is -10 to 20 °C, -5 to 18 °C, -1 to 17 °C, 1 to 16 °C, 2 to 15 °C, 3 to 14 °C, 4 to 13 °C, 5 to It may be 12 °C, 6 to 11 °C or 10 °C.
  • the crystallinity of the polyester resin foam sheet may be formed in the range of 10 to 35%.
  • the crystallinity of the packaging container may be formed in a range of 10 to 35% by cooling the hot-formed packaging container at a reduced temperature of 0.5 to 5°C/min.
  • the temperature reduction conditions may be specifically 0.8 to 4.5°C/min, 1 to 4°C/min, 1.5 to 3.5°C/min, 1.8 to 3.2°C/min, 2 to 3°C/min, or 2.3 to 2.8°C/min. have.
  • the crystallinity of the polyester resin foam sheet is prevented from excessively increasing, so that the molded body in the mold can be easily molded, and a molded body excellent in light weight and heat resistance can be manufactured.
  • the resin melt was prepared by mixing 0.1 part by weight of Irganox (IRG 1010) by weight and heating to 280°C. Then, butane gas was mixed as a blowing agent in the first extruder, and the resin melt was sent to a second extruder and cooled to 220°C. The cooled resin melt passed through a die to form a foam sheet.
  • the density of the prepared polyester resin foam sheet was 380 kg/m 3 , and the thickness was 1 mm.
  • the foam sheet prepared in Preparation Example 1 was cooled to a cooling temperature of 10°C (Mandrel, Air), and the foam sheet was manufactured into a rectangular container with H/D (H: depth of the receiving part, D: diameter of the opening) of 0.4. Thermoforming. Thereafter, the EMA adhesive layer was sealed at 120°C with a lead film laminated with 20 ⁇ m.
  • the surface temperature of the male mold was 40°C
  • the surface temperature of the female mold was 80°C.
  • the foam sheet and the molded body were prepared in the same manner as in Example 1, except that the cooling temperature was 15°C, and then sealed with a lead film.
  • a molded body was manufactured in the same manner as in Example 1, except that the H/D value was 0.5.
  • An aluminum foil layer commonly used as a lead film for the packaging container was used, and an ethyl-methacrylate (EMA) adhesive was applied to one surface of the aluminum foil layer to prepare a lead film for the packaging container.
  • EMA ethyl-methacrylate
  • a foam and a molded body were prepared in the same manner as in Example 1, except that ethylene-vinyl acetate (EVA) was applied to the adhesive layer of the lead film, and the lead film was sealed.
  • EVA ethylene-vinyl acetate
  • the surface roughness value of the centerline was measured according to KS B 0161.
  • the packaging container according to the present invention includes a polyethylene terephthalate resin foam sheet having a compact cell size with an average cell size of 100 to 500 ⁇ m, so that the surface roughness of the foam sheet can be reduced. It is possible to improve the adhesion of the lead film. Specifically, the adhesive strength between the molded body and the lead film is 500 to 1,500 gf based on KS M 3725, which can provide excellent adhesion between the molded body and the lead film. Accordingly, airtightness through the lead film may be improved.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Wrappers (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)
PCT/KR2019/011324 2018-12-26 2019-09-03 리드필름을 포함하는 포장용기 및 이의 제조방법 WO2020138643A1 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2020543107A JP7183284B2 (ja) 2018-12-26 2019-09-03 リッドフィルムを含む包装容器およびその製造方法
CN201980019870.4A CN111886185B (zh) 2018-12-26 2019-09-03 包括盖膜的包装容器及其制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180169326A KR102063785B1 (ko) 2018-12-26 2018-12-26 리드필름을 포함하는 포장용기 및 이의 제조방법
KR10-2018-0169326 2018-12-26

Publications (1)

Publication Number Publication Date
WO2020138643A1 true WO2020138643A1 (ko) 2020-07-02

Family

ID=69158482

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/011324 WO2020138643A1 (ko) 2018-12-26 2019-09-03 리드필름을 포함하는 포장용기 및 이의 제조방법

Country Status (4)

Country Link
JP (1) JP7183284B2 (ja)
KR (1) KR102063785B1 (ja)
CN (1) CN111886185B (ja)
WO (1) WO2020138643A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112622138B (zh) * 2020-12-11 2023-09-22 义乌市大胜橡塑制品有限公司 一种聚乙烯瑜伽柱一次模压成型工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0721899A1 (en) * 1995-01-11 1996-07-17 W.R. Grace & Co.-Conn. Package with shrink film lid
JP2001162735A (ja) * 1999-09-29 2001-06-19 Jsp Corp 熱可塑性樹脂積層発泡シート及びポリスチレン系樹脂発泡シート、並びにそれらの容器
JP2005225515A (ja) * 2004-02-12 2005-08-25 Asahi Kasei Chemicals Corp 樹脂製容器
JP2011207150A (ja) * 2010-03-30 2011-10-20 Nissei Co Ltd 生分解性容器の製造方法
KR20130060172A (ko) * 2010-04-08 2013-06-07 이데미쓰 유니테크 가부시키가이샤 용기 본체 및 그 제조 방법, 그리고 포장 용기
KR20180036418A (ko) * 2016-09-30 2018-04-09 주식회사 휴비스 열차단성이 향상된 식품용기

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0698982B2 (ja) * 1989-09-25 1994-12-07 積水化成品工業株式会社 食品容器
JPH078408Y2 (ja) * 1990-11-30 1995-03-01 積水化成品工業株式会社 飲食品容器
JP2766595B2 (ja) * 1992-12-25 1998-06-18 積水化成品工業株式会社 発泡ポリエチレンテレフタレートシートの成形方法
JPH08311226A (ja) * 1995-05-17 1996-11-26 Kanegafuchi Chem Ind Co Ltd 熱可塑性ポリエステル系樹脂発泡シート
JPH10180952A (ja) * 1996-12-25 1998-07-07 Sekisui Plastics Co Ltd 耐熱性食品容器
JPH11166067A (ja) * 1997-12-02 1999-06-22 Kanegafuchi Chem Ind Co Ltd 熱可塑性ポリエステル系樹脂発泡体およびその製法
RU2243308C2 (ru) * 2000-01-26 2004-12-27 Интернэшнл Пэйпер Компани Изделия из картона низкой плотности
JP3957996B2 (ja) 2001-07-06 2007-08-15 三菱樹脂株式会社 深絞り包装体
EP2200489A4 (en) * 2007-10-15 2013-01-23 Coors Brewing Co INTEGRATED HEAT INSULATION CLADDING FOR CONTAINERS
JP3154418U (ja) 2009-07-30 2009-10-15 新包パック株式会社 惣菜等の閉鎖材付き包装容器およびそれを用いた包装体
CN109195882B (zh) 2016-09-30 2021-04-27 株式会社 Huvis 具有减少的有害物质洗脱的食品容器
JP6864520B2 (ja) 2016-12-05 2021-04-28 積水化成品工業株式会社 熱可塑性ポリエステル系樹脂発泡シートおよび熱可塑性ポリエステル系樹脂発泡容器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0721899A1 (en) * 1995-01-11 1996-07-17 W.R. Grace & Co.-Conn. Package with shrink film lid
JP2001162735A (ja) * 1999-09-29 2001-06-19 Jsp Corp 熱可塑性樹脂積層発泡シート及びポリスチレン系樹脂発泡シート、並びにそれらの容器
JP2005225515A (ja) * 2004-02-12 2005-08-25 Asahi Kasei Chemicals Corp 樹脂製容器
JP2011207150A (ja) * 2010-03-30 2011-10-20 Nissei Co Ltd 生分解性容器の製造方法
KR20130060172A (ko) * 2010-04-08 2013-06-07 이데미쓰 유니테크 가부시키가이샤 용기 본체 및 그 제조 방법, 그리고 포장 용기
KR20180036418A (ko) * 2016-09-30 2018-04-09 주식회사 휴비스 열차단성이 향상된 식품용기

Also Published As

Publication number Publication date
JP2021513488A (ja) 2021-05-27
CN111886185B (zh) 2022-11-11
CN111886185A (zh) 2020-11-03
KR102063785B1 (ko) 2020-01-10
JP7183284B2 (ja) 2022-12-05

Similar Documents

Publication Publication Date Title
WO2020004744A1 (ko) 가스 베리어층을 포함하는 성형체, 이를 포함하는 포장용기 및 성형체의 제조방법
KR101875242B1 (ko) 2축 연신 폴리부틸렌 테레프탈레이트 필름을 포함하는 냉간 성형용 전지 케이스 포장재
KR960011745B1 (ko) 폴리올레핀계 수지 발포라미네이트 시이트 및 그것의 양면 진공성형법
KR102005292B1 (ko) 스킨층을 포함하는 발포시트, 이의 제조방법 및 이를 포함하는 식품 용기
WO2015167135A1 (ko) 식품 포장용 발포 트레이 및 이의 제조방법
WO2020138643A1 (ko) 리드필름을 포함하는 포장용기 및 이의 제조방법
WO2019124948A1 (ko) 내열성 및 가공성이 우수한 식품용기용 복합시트 및 이의 제조방법
WO2018062623A1 (ko) 유해 물질 용출량이 저감된 식품용기
KR102175970B1 (ko) 인쇄 적성이 향상된 폴리에틸렌 테레프탈레이트 발포 용기 및 이의 제조방법
KR102160456B1 (ko) 성형성이 우수한 발포시트, 이의 제조방법 및 이를 이용한 식품용기
WO2012086954A2 (ko) 페놀수지 경화 발포체로 이루어진 진공단열재용 심재와 이를 이용한 진공단열재 및 그 제조 방법
WO2022211241A1 (ko) 리터너블 박스
WO2020130610A1 (ko) 가공성이 우수한 복합시트 및 이를 포함하는 포장용기의 제조방법
WO2020222550A1 (ko) 인쇄 적성 및 단열성이 향상된 용기 및 이의 제조방법
WO2020138571A1 (ko) 스킨층을 포함하는 발포시트, 이의 제조방법 및 이를 포함하는 식품용기
KR101705222B1 (ko) 공압출을 이용한 열전도 이방성 필름의 제조 방법
WO2021210856A1 (ko) 발포용 폴리에스테르 수지 칩, 이를 이용한 폴리에스테르 발포시트 및 이의 제조방법
WO2020005000A1 (ko) 식품 포장용기 및 이의 제조방법
WO2022039503A1 (ko) 폴리에스테르 다층 필름 및 그의 제조방법
WO2014104591A1 (ko) 화학가교 폴리비닐클로라이드계 난연 발포단열재 및 그의 제조방법
WO2020130451A1 (ko) 생분해성 수지 컴파운드 및 이의 제조방법
WO2020130174A1 (ko) 열성형성이 우수한 발포시트 및 이의 제조방법
KR102175971B1 (ko) 부위별 셀의 크기가 상이한 발포 성형체, 상기 발포 성형체를 포함하는 포장용기 및 상기 발포 성형체의 제조방법
WO2022055047A1 (ko) 단열 용기 및 단열 용기의 제조 방법
WO2023211118A1 (ko) 흡음성이 우수한 발포비드, 이를 이용한 발포 성형체 제조방법 및 이를 이용하여 제조된 발포 성형체

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2020543107

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19904250

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19904250

Country of ref document: EP

Kind code of ref document: A1