US20120031799A1 - Food storage container - Google Patents

Food storage container Download PDF

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Publication number
US20120031799A1
US20120031799A1 US12/984,444 US98444411A US2012031799A1 US 20120031799 A1 US20120031799 A1 US 20120031799A1 US 98444411 A US98444411 A US 98444411A US 2012031799 A1 US2012031799 A1 US 2012031799A1
Authority
US
United States
Prior art keywords
film
lateral
food storage
storage container
oxygen barrier
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.)
Abandoned
Application number
US12/984,444
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English (en)
Inventor
Gu-Hoan Cha
Kwang-soo Park
Kyoung-Sik Jo
Ki-Min Rhyu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CJ CheilJedang Corp
Original Assignee
CJ CheilJedang Corp
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 CJ CheilJedang Corp filed Critical CJ CheilJedang Corp
Assigned to CJ CHEILJEDANG CORPORATION reassignment CJ CHEILJEDANG CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHA, GU-HOAN, JO, KYOUNG-SIK, PARK, KWANG-SOO, Rhyu, Ki-Min
Publication of US20120031799A1 publication Critical patent/US20120031799A1/en
Abandoned legal-status Critical Current

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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
    • B65D25/14—Linings or internal coatings
    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container

Definitions

  • the embodiment relates to a food storage container, and more particularly, to a food storage container which has an improved film structure as compared with a conventional complicated film structure and has a high oxygen barrier performance.
  • a retort pouch is to preserve food for a long time, being blocked from air and light, and is manufactured as follows: cooked and processed food is sealed into a container, followed by heating and sterilization at a high temperature via a retort sterilization process.
  • the retort sterilization process includes a high-retort sterilization, performed at 125° C. or more, a standard retort sterilization, performed at 121° C., a semi-retort sterilization, performed around 110° C., and the like.
  • a food storage container has a high oxygen barrier performance.
  • a film having a high barrier performance is in-molded on an outside of the container, but a portion, such as a corner of the container, may not be in-molded to reduce oxygen barrier performance.
  • a method of providing oxygen barrier performance to a container using injection resin having a high barrier performance is used, but the injection resin is expensive, and oxygen barrier performance decreases when the resin having the high barrier performance is not uniformed distributed.
  • a high barrier performance sheet is thermally molded into a container shape and inserted into an injection container, a method of inserting a film into an inside of a container and injecting, a method of thermally molding a high barrier performance sheet of ethylene vinyl alcohol (EVOH) or meta-xylylene diamine (MXD-6), or the like.
  • EVOH ethylene vinyl alcohol
  • MXD-6 meta-xylylene diamine
  • the high barrier performance sheet is thermally molded into the container shape and inserted into the injection container, thermally molding the high barrier performance sheet and injection are separately performed to bring about a complicated process, and an entire thickness of the container becomes thick due to the thermally molded sheet.
  • the film In the method of inserting the film into the inside of the container and injecting, the film has a complicated structure so that a vacuum is not formed when the film is attached to the container, and thus a manufacturing process is difficult. Moreover, since the film is shaped in advance and inserted, an additional manufacturing process is needed.
  • oxygen barrier performance decreases in a sterilization process and is not uniform depending on a difference in thickness of the container to reduce an expiration data.
  • An aspect of the present invention is to provide a food storage container in which a film to be attached to an inside of the container is divided into two sheets and attached, so that a conventional complicated film structure is improved, a process of shaping the film is not necessary, and manufacturing costs are reduced.
  • an aspect of the present invention is to provide a food storage container in which a film forms a first overlapping part and a second overlapping part to be closely attached to an inside of the container although the film is divided into two sheets, so that oxygen barrier performance is improved to preserve food in the container for a long time.
  • a food storage container including a container body including a bottom part and a lateral part to form an interior space, a bottom film attached to the bottom part, and a lateral film forming a first overlapping part where the lateral film overlaps with the bottom film and a second overlapping part where an end portion overlaps with another end portion, and being attached to the lateral part.
  • the container body may be integrated with the respective films by insert molding.
  • the bottom film and the lateral film each may include a lower layer formed of polypropylene (PP), at least one oxygen barrier resin layer disposed on the lower layer, and an upper layer disposed on the oxygen barrier resin layer and formed of PP.
  • PP polypropylene
  • the oxygen barrier resin layer may include polyethylene terephthalate (PET).
  • the bottom film and the lateral film each may further include an ivory white layer disposed between the lower layer and the oxygen barrier resin layer and formed of ivory white PP or ivory white PET.
  • the container body may further include a flange extending outwards from an upper portion of the lateral part, the lateral film may be attached to an upper surface of the flange as well as to the lateral part, and the food storage container may further include a lead film attached to the lateral film on the upper surface of the flange.
  • the lead film may include a lower layer formed of PP, at least one oxygen barrier resin layer disposed on the lower layer, and an upper layer disposed on the oxygen barrier resin layer and formed of PP.
  • the oxygen barrier resin layer may include PET.
  • the oxygen barrier resin layer may have an oxygen transmission rate of 0.07 cc/m 2 ⁇ day ⁇ atm to 0.09 cc/m 2 ⁇ day ⁇ atm.
  • Display information may be printed on a lower surface of the ivory white layer.
  • exemplary embodiments of the present invention provides a food storage container in which a film to be attached to an inside of the container is divided into two sheets and attached, so that a conventional complicated film structure is improved, a process of shaping the film is not necessary, and manufacturing costs are reduced.
  • exemplary embodiments of the present invention provide a food storage container in which a film forms a first overlapping part and a second overlapping part to be closely attached to an inside of the container although the film is divided into two sheets, so that oxygen barrier performance is improved to preserve food in the container for a long time.
  • FIG. 1 is a cross-sectional view of a food storage container according to an exemplary embodiment of the present invention
  • FIG. 2A is an enlarged view of a part A of FIG. 1 ;
  • FIG. 2B illustrates a first overlapping part
  • FIGS. 3A and 3B illustrate a second overlapping part
  • FIG. 4 is a cross-sectional view of a bottom film and a lateral film.
  • FIG. 5 is a cross-sectional view of the food storage container further including a flange.
  • FIG. 1 is a cross-sectional view of a food storage container according to an exemplary embodiment of the present invention.
  • the food storage container includes a container body 10 , a bottom film 21 , and a lateral film 22 .
  • the container body 10 forms an interior space 16 in which preserved food is put, and includes a bottom part 12 and a lateral part 14 to form the interior space 16 which is open upwards.
  • the bottom part 12 may be formed in a plate shape and may be slightly modified, for example, bent, grooved, or the like.
  • the lateral part 14 is formed to extend upwards from an edge of the bottom part 12 and functions to close a lateral side of the container body 10 .
  • the bottom film 21 is attached to the bottom part 12 on an upper side of the bottom part 12 , as shown in FIG. 1 .
  • the lateral film 22 is attached to the lateral part 14 on an internal side of the lateral part 14 , as shown in FIG. 1 .
  • the bottom film 21 and the lateral film 22 form a first overlapping part and a second overlapping part to eliminate a portion where the films are not attached in the container body 10 .
  • the container body 10 may be formed of synthetic resins, such as transparent plastic, and is integrated with the bottom film 21 and the lateral film 22 by a film insert molding.
  • the film insert molding is a process that by inserting a preformed film into a mold before injection molding, the film and a molded part are integrated into a product, simultaneously with injection.
  • FIG. 2A is an enlarged view of a part A of FIG. 1
  • FIG. 2B illustrates the first overlapping part
  • FIGS. 3A and 3B illustrate the second overlapping part.
  • the first overlapping part 31 and the second overlapping part 32 are described further with reference to FIGS. 2A to 3B .
  • the first overlapping part 31 is a portion where the lateral film 22 overlaps with the bottom film 21 and is formed to eliminate a vacuum, where the film is not attached, formed between the lateral film 22 and the bottom film 21 .
  • the lateral film 22 is disposed over the bottom film 21 , but the lateral film 22 may be disposed under the bottom film 21 .
  • FIG. 2A a space formed between the bottom film 21 and the lateral part 14 is exaggerated for clarity. Practically, each film is considerably thin and is thermally attached to the inside of the container body 10 , and thus the space due to the first overlapping part 31 is greatly small or the space may not exist.
  • the first overlapping part 31 is formed on the lateral part 14 but may be formed in different positions, such as around a corner between the bottom part 12 and the lateral part 14 , on the bottom part 12 , or the like.
  • the second overlapping part 32 is a portion where the lateral film 22 overlaps with itself, that is, a portion where one end portion 221 of the lateral film 22 overlaps with another end portion 222 .
  • the second overlapping part 32 is formed to closely cover the entire lateral part 14 without a vacuum being formed when the lateral film 22 is attached to the lateral side 14 .
  • the first overlapping part 31 and the second overlapping part 32 are attached by heat in an injection molding process, wherein the bottom film 21 is thermally attached to the lateral film 22 in the first overlapping part 31 , and the one end portion 221 is thermally attached to the other end portion 222 in the second overlapping part 32 .
  • a film to be attached to the inside of the container body 10 is divided into two sheets to be attached to the bottom part 12 and the lateral part 14 , respectively, thereby improving a conventional complicated film structure, not involving a manufacturing process of shaping a film, and reducing manufacturing costs.
  • the film is divided into two sheets, the first overlapping part 31 and the second overlapping part 32 are formed so that the film is closely attached to the inside of the container body 10 . Accordingly, oxygen barrier performance is enhanced to preserve food in the container for a long time.
  • FIGS. 2B and 3B show the respective overlapping parts 31 and 32 being formed straightly and having a regular width, a size and a shape of the respective overlapping parts 31 and 32 may be changed depending on a size and a shape of the respective films 21 and 22 , a size and a shape of the container body 10 , or the like.
  • FIG. 4 is a cross-sectional view of the bottom film and the lateral film.
  • the bottom film 21 and the lateral film 22 each include a lower layer 51 , an oxygen barrier resin layer 53 , and an upper layer 54 which are sequentially disposed.
  • the respective films 21 and 22 may further include an ivory white layer 52 disposed between the lower layer 51 and the oxygen barrier resin layer 53 .
  • the ivory white layer 52 which is ivory white, is included to prevent a color of food in the container from being seen from the outside.
  • the ivory white layer 52 may be formed of ivory white polypropylene (PP) or ivory white polyethylene terephthalate (PET).
  • Display information may be printed on a lower surface of the ivory white layer 52 .
  • the display information printed on the lower surface of the ivory white layer 52 includes pictures and forms including patterns, designs, and characters, such as flowers and butterflies, product related information, such as barcodes and labels, letters, or the like, but is not limited thereto.
  • the display information is printed on an inside of a film to be insert-molded and is exposed to the outside through the container body 10 , and thus damage which may occur when a sticker or label is attached to an outside of the container is prevented in designing the container.
  • the lower layer 51 and the upper layer 54 may be formed of PP.
  • the oxygen barrier resin layer 53 may be formed of PET.
  • a plurality of oxygen barrier resin layers 53 may be included in the respective films 21 and 22 to improve oxygen barrier performance, and an oxygen transmission rate (OTR) may be 0.07 cc/m 2 ⁇ day ⁇ atm to 0.09 cc/m 2 ⁇ day ⁇ atm.
  • OTR is measured on the container of the present invention and other containers using an oxygen permeation rate tester (OX-TRAN, a registered trademark, manufactured by MOCON, Inc.).
  • OX-TRAN oxygen permeation rate tester
  • a container of the present invention a container having a general barrier film in-molded on an outside, a thermally molded container of ethylene vinyl alcohol (EVOH), and a thermally molded container of meta-xylylene diamine (MXD-6).
  • EVOH ethylene vinyl alcohol
  • MXD-6 meta-xylylene diamine
  • OTR is measured as follows (cc/pkg/24 h ⁇ atm).
  • the container of the present invention has a lower OTR before retort sterilization than the other containers.
  • the other containers have a considerably increased OTR after retort sterilization, while the container of the present invention has a slightly increased OTR after retort sterilization.
  • the container of the present invention has an OTR before retort sterilization slightly different from the other containers, but has an OTR after retort sterilization considerably different from the other containers.
  • the container of the present invention still has a superior oxygen barrier performance after retort sterilization as compared with the other containers.
  • FIG. 5 is a cross-sectional view of the food storage container further including a flange.
  • the container body 10 further includes a flange 18 extending outwards from an upper end portion of the lateral part 14 .
  • the lateral film 22 is attached to an upper surface of the flange 18 as well as to the lateral part 14 . That is, the lateral film 22 covering the lateral part 14 extends to the flange 18 to cover the upper surface of the flange 18 .
  • the lateral film 22 may form the second overlapping part 32 on the upper surface of the flange 18 to closely cover the upper surface of the flange 18 .
  • a lead film 60 is thermally attached to the lateral film 2 , so that food in the container is thoroughly blocked from the outside due to the film having a high oxygen barrier performance.
  • the lead film 60 functions to seal the interior space of the container body 10 and is attached to the lateral film 22 disposed on the upper surface of the flange 18 .
  • the lead film 60 may have the same configuration as the respective films 21 and 22 in order to prevent oxygen from permeating the container.
  • the lead film 60 includes a lower layer 51 and an upper layer 54 which are formed of PP, and an oxygen barrier resin layer 53 disposed between the lower layer 51 and the upper layer 54 .
  • the oxygen barrier resin layer 53 may be formed of PET, and a plurality of oxygen barrier resin layers 53 may be included to improve oxygen barrier performance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
US12/984,444 2010-08-05 2011-01-04 Food storage container Abandoned US20120031799A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100075699A KR101091267B1 (ko) 2010-08-05 2010-08-05 식품 보관 용기
KR10-2010-0075699 2010-08-05

Publications (1)

Publication Number Publication Date
US20120031799A1 true US20120031799A1 (en) 2012-02-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
US12/984,444 Abandoned US20120031799A1 (en) 2010-08-05 2011-01-04 Food storage container

Country Status (6)

Country Link
US (1) US20120031799A1 (zh)
EP (1) EP2415682A1 (zh)
JP (1) JP2012035910A (zh)
KR (1) KR101091267B1 (zh)
CN (1) CN102372121A (zh)
AU (1) AU2011200047A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120152952A1 (en) * 2009-10-28 2012-06-21 Tae Hong Cheong Container structure having reclosable cap that is heat-sealed on lid film
US20190329934A1 (en) * 2016-06-29 2019-10-31 Cj Cheiljedang Corporation Packaging container

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6236411B2 (ja) * 2015-05-22 2017-11-22 日精樹脂工業株式会社 カップ状容器の製造方法
CN105035470A (zh) * 2015-06-08 2015-11-11 吴江市博大电子科技有限公司 多层自粘结塑料包装用容器及其制备方法
KR102233269B1 (ko) * 2019-06-28 2021-03-29 씨제이제일제당 주식회사 조리용 파우치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4583577A (en) * 1984-08-27 1986-04-22 Pat Canfield Container insulator
WO1994026604A1 (en) * 1993-05-14 1994-11-24 Essex Specialty Products, Inc. Container for liquids

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756494A (en) * 1971-12-20 1973-09-04 Greif Bros Corp Drum with plastic liner
JPS53108171A (en) 1977-03-03 1978-09-20 Sekisui Chem Co Ltd Corrosion-proofing of liquid bath
JP2863548B2 (ja) * 1989-05-30 1999-03-03 大日本印刷株式会社 バリア性容器の製造方法及びその容器
JP3828598B2 (ja) * 1994-09-14 2006-10-04 大日本印刷株式会社 インモールドラベル容器およびその製法
JPH08156168A (ja) * 1994-11-29 1996-06-18 Lion Corp チューブ容器胴部形成用積層シート
JPH08174763A (ja) * 1994-12-27 1996-07-09 Dainippon Printing Co Ltd 包装体
US6248380B1 (en) * 1995-06-06 2001-06-19 Cryovac, Inc. Package having a dual-film lid comprising a gas-impermeable film and a delaminatable, gas-permeable film
US5927525A (en) * 1997-04-28 1999-07-27 Plastipak Packaging, Inc. Multi-layer containers and preforms
JP3796331B2 (ja) * 1997-09-22 2006-07-12 出光興産株式会社 食品包装用積層フィルム
JP3566561B2 (ja) * 1998-10-15 2004-09-15 積水化成品工業株式会社 内面がシート被覆された発泡樹脂製容器とその製造方法
JP3899828B2 (ja) * 2001-02-26 2007-03-28 凸版印刷株式会社 バリアカップ
JP2006027705A (ja) * 2004-07-20 2006-02-02 Km Planning Co Ltd 容器およびラベル
JP2008302936A (ja) * 2007-06-05 2008-12-18 Mitsubishi Plastics Inc 運搬用容器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4583577A (en) * 1984-08-27 1986-04-22 Pat Canfield Container insulator
WO1994026604A1 (en) * 1993-05-14 1994-11-24 Essex Specialty Products, Inc. Container for liquids

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120152952A1 (en) * 2009-10-28 2012-06-21 Tae Hong Cheong Container structure having reclosable cap that is heat-sealed on lid film
US9387970B2 (en) * 2009-10-28 2016-07-12 Cj Cheiljedang Corp. Container structure
US20190329934A1 (en) * 2016-06-29 2019-10-31 Cj Cheiljedang Corporation Packaging container

Also Published As

Publication number Publication date
CN102372121A (zh) 2012-03-14
AU2011200047A1 (en) 2012-02-23
KR101091267B1 (ko) 2011-12-07
EP2415682A1 (en) 2012-02-08
JP2012035910A (ja) 2012-02-23

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Date Code Title Description
AS Assignment

Owner name: CJ CHEILJEDANG CORPORATION, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHA, GU-HOAN;PARK, KWANG-SOO;JO, KYOUNG-SIK;AND OTHERS;REEL/FRAME:025593/0512

Effective date: 20110105

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION