US20060222272A1 - Plastic film bag with tear tapes - Google Patents
Plastic film bag with tear tapes Download PDFInfo
- Publication number
- US20060222272A1 US20060222272A1 US11/254,968 US25496805A US2006222272A1 US 20060222272 A1 US20060222272 A1 US 20060222272A1 US 25496805 A US25496805 A US 25496805A US 2006222272 A1 US2006222272 A1 US 2006222272A1
- Authority
- US
- United States
- Prior art keywords
- plastic film
- film bag
- tear
- tear tape
- films
- 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
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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/66—Inserted or applied tearing-strings or like flexible elements
Definitions
- the present invention relates, in general, to bags made of plastic films and provided with tear tapes and, more particularly, to a plastic film bag which can be opened using tear tapes and can be completely sealed despite the tear tapes being provided on the film bag.
- Plastic film bags which are shaped as bags using plastic films as shown in FIG. 1 , have been widely used as packaging materials to package a variety of foods, such as processed food or snacks, in recent years.
- the plastic film bags to package food may be produced by cutting a long tubular plastic film, which is continuously extruded from an extruder, into a plurality of tubular pieces having predetermined lengths and by seaming the cut ends of each tubular piece of the film through high frequency seam welding.
- the plastic film bags may be produced by placing two plastic films such that one overlaps another, and by thermally seaming the four sides of the two overlapping films, thus shaping the overlapping films in a bag.
- the plastic films used as the materials of the plastic film bags, may be selected from films 100-200 ⁇ m in thickness made of polyethylene resin, polypropylene resin, polyester resin or nylon resin, or papers impregnated with one of the synthetic resins.
- Products, packaged in the plastic film bags, are marketed in the state of being contained in the vacuum-sealed bags. When it is required to use the packaged products, users open the vacuum-sealed plastic film bags and take the contents out of the open bags to use the contents.
- a user may directly cut the upper end of the bag using scissors.
- a plastic fastener may be provided on the inner surface of the plastic film bag to allow a user to repeatedly close the open end of the bag after the end of the bag has been cut.
- the bag may be constructed such that it may be opened in a conventional manner which has been adapted to plastic films used to package cigarette packs.
- the plastic films that package cigarette packs are made of polypropylene resin.
- tear tapes are attached to predetermined portions of the films using an adhesive along which the films may be cut and open.
- a user pulls a tear tape forcibly backwards along a predetermined tear line of the polypropylene film the film is cut and opened along the predetermined tear line by the force of pulling the tear tape backwards.
- a tear tape 3 is provided along a predetermined tear line on the inner surface of the plastic film bag 1 such that one end of the tear tape 3 protrudes outside the film bag 1 .
- the tear tape 3 presses the film 2 along the predetermined tear line along which the tear tape 3 is attached. Therefore, the plastic film 2 is cut and opened along the predetermined tear line.
- a tear tape must be attached on the inner surface of the polypropylene film using an adhesive and, furthermore, one end of the tear tape must protrude outside the plastic film so as to allow a user to hold the end of the tear tape and pull the tear tape backwards so as to cut and open the plastic film.
- the tear tape In the manner of cutting and opening a plastic film using a conventional tear tape, the tear tape is attached to the inner surface of the film using an adhesive, and part of the tape must pass through the film so as to protrude outside the film. Thus, this manner cannot completely seal the package.
- the manner using a conventional tear tape has been recognized as a simple and easy manner, it is not preferably adapted to package some foods, for example, precooked food, stuffed pancakes, bread, or fast food, the quality of which may be greatly reduced when the food in the package is gradually dried or comes into contact with atmospheric air.
- an object of the present invention is to provide a plastic film bag having tear tapes, which can be opened using the tear tapes and can be completely sealed despite the tear tapes being provided on the film bag.
- the inventor provides a plastic film bag having tear tapes according to the present invention after actively studying a phenomenon in which, when molecules of a polypropylene film are oriented monodirectionally, the polypropylene film has the property of tearing straight in one direction. Described in detail, if tear tapes made of the monodirectionally oriented polypropylene film are attached to the outer surface of a plastic film bag using an adhesive, the plastic film bag may be cut straight in one direction when the tear tapes are pulled backwards along a predetermined tear line of the film bag.
- the present invention provides a plastic film bag comprising a seam welded part, a plastic film bag body part and tear tapes to open the plastic film bag, wherein each of the tear tapes is made of a monodirectionally oriented polypropylene film and is attached to an outer surface of the plastic film bag using an adhesive at a predetermined position between the seam welded part and the plastic film bag body part.
- the plastic film of the plastic film bag may be selected from the group consisting of polyethylene films, polypropylene films, nylon films, polyester films, and papers impregnated with synthetic resin.
- FIG. 1 is a perspective view and isolated sectional view illustrating the construction of a conventional plastic film bag having tear tapes attached to respective inner surfaces of the bag.
- FIG. 2 is a perspective view and isolated sectional view illustrating the construction of a plastic film bag having tear tapes attached to respective outer surfaces of the bag according to an embodiment of the present invention.
- the present invention provides a plastic film bag which can be opened using tear tapes and can be completely sealed despite the tear tapes being provided on the film bag.
- the plastic film bag according to the present invention will be described in detail with reference to FIG. 2 .
- the reference numeral 1 denotes a plastic film bag according to the present invention
- 2 denotes a film bag body part
- 3 and 3 ′ denote a tear tape
- 4 and 4 ′ denote two seam welded parts
- 5 denotes a plastic fastener.
- the plastic film bag may be constructed without having the plastic fastener 5 , unlike the preferred embodiment.
- Each of the tear tapes 3 , 3 ′ is made of a monodirectionally oriented polypropylene film (herein below, referred simply as “MOPP film”).
- Polypropylene resin is a crystalline polymer wherein propylene molecules are arrayed with stereo regularity.
- a tear tape made of a MOPP film is attached to the outer surface of a plastic film bag using an adhesive along a predetermined tear line while considering the above-mentioned properties of the MOPP film.
- the tear tape attached to the plastic film bag is pulled straight backwards, the tear tape is cut along the texture of the arrangement of the oriented propylene molecules and cuts the plastic film bag straight along the predetermined tear line, thus opening the plastic film bag.
- the plastic film used as the material of the plastic film bag according to the present invention, is preferably selected from films 100-200 ⁇ m in thickness.
- a plastic film 100 ⁇ m in thickness it is preferred to use a tear tape 5 ⁇ m in width and 30 ⁇ m in thickness, while, when a plastic film 200 ⁇ m in thickness is used, it is preferred to use a tear tape 6 ⁇ m in width and 70 ⁇ m in thickness.
- Each of the tear tapes 3 , 3 ′ is preferably attached using an adhesive to the outer surface of the plastic film bag body part 2 along a predetermined position between the upper seam welded part 4 and the body part 2 .
- well-known acryl resin-based adhesive or rubber-based adhesive is preferably used as the adhesive to attach the tear tapes on the outer surface of the plastic film bag.
- the tear tapes are characterized in that each of the tapes can tear straight along a predetermined tear line with a small force without using any additional cutting tool.
Abstract
A plastic film bag, including a seam welded part, a plastic film bag body part, and a tear tape to open the plastic film bag, is disclosed. In the plastic film bag, the tear tape is made of a monodirectionally oriented polypropylene film and is attached to an outer surface of the plastic film bag at a predetermined position between the seam welded part and the plastic film bag body part. Because the plastic film bag of the present invention is realized such that the tear tape is attached to the outer surface of the plastic film bag using an adhesive, the tear tape does not compromise the function of sealing the package, but allows the package to be completely sealed, unlike a conventional tear tape attached to the inner surface of a plastic film bag.
Description
- Not applicable.
- Not applicable.
- Not applicable.
- The present invention relates, in general, to bags made of plastic films and provided with tear tapes and, more particularly, to a plastic film bag which can be opened using tear tapes and can be completely sealed despite the tear tapes being provided on the film bag.
- Plastic film bags, which are shaped as bags using plastic films as shown in
FIG. 1 , have been widely used as packaging materials to package a variety of foods, such as processed food or snacks, in recent years. - In the prior art, the plastic film bags to package food may be produced by cutting a long tubular plastic film, which is continuously extruded from an extruder, into a plurality of tubular pieces having predetermined lengths and by seaming the cut ends of each tubular piece of the film through high frequency seam welding. Alternatively, the plastic film bags may be produced by placing two plastic films such that one overlaps another, and by thermally seaming the four sides of the two overlapping films, thus shaping the overlapping films in a bag.
- The plastic films, used as the materials of the plastic film bags, may be selected from films 100-200 μm in thickness made of polyethylene resin, polypropylene resin, polyester resin or nylon resin, or papers impregnated with one of the synthetic resins. Products, packaged in the plastic film bags, are marketed in the state of being contained in the vacuum-sealed bags. When it is required to use the packaged products, users open the vacuum-sealed plastic film bags and take the contents out of the open bags to use the contents.
- To open a conventional vacuum-sealed plastic film bag, a user may directly cut the upper end of the bag using scissors. Alternatively, a plastic fastener may be provided on the inner surface of the plastic film bag to allow a user to repeatedly close the open end of the bag after the end of the bag has been cut. As a further alternative, to allow a user to open a vacuum-sealed plastic film bag, the bag may be constructed such that it may be opened in a conventional manner which has been adapted to plastic films used to package cigarette packs.
- Generally, the plastic films that package cigarette packs are made of polypropylene resin. To allow users to open the plastic films of the cigarette packs when necessary, tear tapes are attached to predetermined portions of the films using an adhesive along which the films may be cut and open. When a user pulls a tear tape forcibly backwards along a predetermined tear line of the polypropylene film, the film is cut and opened along the predetermined tear line by the force of pulling the tear tape backwards. The manner of cutting and opening a plastic film using a conventional tear tape will be described herein below with reference to
FIG. 1 . Atear tape 3 is provided along a predetermined tear line on the inner surface of theplastic film bag 1 such that one end of thetear tape 3 protrudes outside thefilm bag 1. Thus, when a user holds the protruding end of thetear tape 3 with fingers and pulls thetear tape 3 backwards along the predetermined tear line of the film bag, thetear tape 3 presses thefilm 2 along the predetermined tear line along which thetear tape 3 is attached. Therefore, theplastic film 2 is cut and opened along the predetermined tear line. - However, the manner of cutting and opening a plastic film using a conventional tear tape is problematic in that a tear tape must be attached on the inner surface of the polypropylene film using an adhesive and, furthermore, one end of the tear tape must protrude outside the plastic film so as to allow a user to hold the end of the tear tape and pull the tear tape backwards so as to cut and open the plastic film.
- In the manner of cutting and opening a plastic film using a conventional tear tape, the tear tape is attached to the inner surface of the film using an adhesive, and part of the tape must pass through the film so as to protrude outside the film. Thus, this manner cannot completely seal the package.
- Thus, although the manner using a conventional tear tape has been recognized as a simple and easy manner, it is not preferably adapted to package some foods, for example, precooked food, stuffed pancakes, bread, or fast food, the quality of which may be greatly reduced when the food in the package is gradually dried or comes into contact with atmospheric air.
- To solve the above-mentioned problems, it has been required in the related art to provide a plastic film bag which uses a tear tape and completely seals a packaged item from the atmosphere.
- Accordingly, the present invention has been made keeping in mind the above problems occurring in the related art, and an object of the present invention is to provide a plastic film bag having tear tapes, which can be opened using the tear tapes and can be completely sealed despite the tear tapes being provided on the film bag.
- The inventor provides a plastic film bag having tear tapes according to the present invention after actively studying a phenomenon in which, when molecules of a polypropylene film are oriented monodirectionally, the polypropylene film has the property of tearing straight in one direction. Described in detail, if tear tapes made of the monodirectionally oriented polypropylene film are attached to the outer surface of a plastic film bag using an adhesive, the plastic film bag may be cut straight in one direction when the tear tapes are pulled backwards along a predetermined tear line of the film bag.
- In an aspect, the present invention provides a plastic film bag comprising a seam welded part, a plastic film bag body part and tear tapes to open the plastic film bag, wherein each of the tear tapes is made of a monodirectionally oriented polypropylene film and is attached to an outer surface of the plastic film bag using an adhesive at a predetermined position between the seam welded part and the plastic film bag body part.
- In the plastic film bag, the plastic film of the plastic film bag may be selected from the group consisting of polyethylene films, polypropylene films, nylon films, polyester films, and papers impregnated with synthetic resin.
- The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings.
-
FIG. 1 is a perspective view and isolated sectional view illustrating the construction of a conventional plastic film bag having tear tapes attached to respective inner surfaces of the bag. -
FIG. 2 is a perspective view and isolated sectional view illustrating the construction of a plastic film bag having tear tapes attached to respective outer surfaces of the bag according to an embodiment of the present invention. - The present invention provides a plastic film bag which can be opened using tear tapes and can be completely sealed despite the tear tapes being provided on the film bag.
- The plastic film bag according to the present invention will be described in detail with reference to
FIG. 2 . - In
FIG. 2 , thereference numeral 1 denotes a plastic film bag according to the present invention, 2 denotes a film bag body part, 3 and 3′ denote a tear tape, 4 and 4′ denote two seam welded parts, and 5 denotes a plastic fastener. In the present invention, the plastic film bag may be constructed without having theplastic fastener 5, unlike the preferred embodiment. - In the present invention, the plastic film, used as the material for the
plastic film bag 1, may be selected from the group consisting of polyethylene films, polypropylene films, nylon films, polyester films, and papers impregnated with one of the above-mentioned synthetic resins which are polyethylene, polypropylene, nylon and polyester. Each of thetear tapes - Polypropylene resin is a crystalline polymer wherein propylene molecules are arrayed with stereo regularity.
- Thus, when a rectangular polypropylene film is stretched in one direction, the propylene molecules of the film are oriented in the stretched direction while forming straight lines, thus becoming an MOPP film. When the MOPP film is cut in the oriented direction, the film is cut along the texture of the arrangement of the oriented propylene molecules.
- In the present invention, a tear tape made of a MOPP film is attached to the outer surface of a plastic film bag using an adhesive along a predetermined tear line while considering the above-mentioned properties of the MOPP film. When the tear tape attached to the plastic film bag is pulled straight backwards, the tear tape is cut along the texture of the arrangement of the oriented propylene molecules and cuts the plastic film bag straight along the predetermined tear line, thus opening the plastic film bag.
- The plastic film, used as the material of the plastic film bag according to the present invention, is preferably selected from films 100-200 μm in thickness. When a plastic film 100 μm in thickness is used, it is preferred to use a
tear tape 5 μm in width and 30 μm in thickness, while, when a plastic film 200 μm in thickness is used, it is preferred to use a tear tape 6 μm in width and 70 μm in thickness. - Each of the
tear tapes bag body part 2 along a predetermined position between the upper seam weldedpart 4 and thebody part 2. - In the present invention, well-known acryl resin-based adhesive or rubber-based adhesive is preferably used as the adhesive to attach the tear tapes on the outer surface of the plastic film bag.
- In the plastic film bag having the above-mentioned construction according to the present invention, the tear tapes are characterized in that each of the tapes can tear straight along a predetermined tear line with a small force without using any additional cutting tool. Thus, when a user pulls the tear tape straight backwards with fingers holding an end of the tape, the plastic film bag, to which the tear tape is attached using an adhesive, is cut straight by the tear tape, thus being opened.
- As apparent from the above description, the plastic film bag according to the present invention is realized such that tear tapes are attached to the outer surface of the plastic film bag using an adhesive. Thus, unlike a conventional tear tape attached to the inner surface of a plastic film bag, the tear tape of the present invention does not compromise the function of sealing the package, but allows the package to be completely sealed.
- Although a preferred embodiment of the present invention has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
Claims (2)
1. A plastic film bag comprising:
a seam welded part,
a plastic film bag body part, and
a tear tape to open the plastic film bag body part,
wherein the tear tape is comprised of a monodirectionally oriented polypropylene film and is attached to an outer surface of the plastic film bag body part at a predetermined position between the seam welded part and the plastic film bag body part.
2. The plastic film bag as set forth in claim 1 , wherein a plastic film of the plastic film bag body part is selected from the group consisting of polyethylene films, polypropylene films, nylon films, polyester films, and papers impregnated with synthetic resin.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20-2005-0009011U KR200389024Y1 (en) | 2005-04-01 | 2005-04-01 | Plastic film bag with tear tape |
KR20-2005-0009011 | 2005-04-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060222272A1 true US20060222272A1 (en) | 2006-10-05 |
Family
ID=37070570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/254,968 Abandoned US20060222272A1 (en) | 2005-04-01 | 2005-10-21 | Plastic film bag with tear tapes |
Country Status (2)
Country | Link |
---|---|
US (1) | US20060222272A1 (en) |
KR (1) | KR200389024Y1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100198185A1 (en) * | 2007-06-21 | 2010-08-05 | Goerisch Irmgard | Multi-chamber bag for use with enteral nutrition |
CN104136343A (en) * | 2011-12-23 | 2014-11-05 | 雀巢产品技术援助有限公司 | Flexible sachet having a triangular shape |
US20170216557A1 (en) * | 2013-03-14 | 2017-08-03 | Hollister Incorporated | Medical product package |
JP2020075723A (en) * | 2018-11-05 | 2020-05-21 | 凸版印刷株式会社 | Standing pouch having opening shape holding member |
US20200324952A1 (en) * | 2018-12-20 | 2020-10-15 | Conmed Corporation | Medical electrode tear strip |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102495995B1 (en) | 2020-12-30 | 2023-02-06 | 이폴리텍 주식회사 | Biodegradable resin composition, its manufacturing method, and biodegradable fresh food storage bag manufactured therefrom |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3098601A (en) * | 1958-12-31 | 1963-07-23 | Procter & Gamble | Tear tape for thermoplastic packaging materials |
US3535409A (en) * | 1967-01-17 | 1970-10-20 | Tower Products | Method of making sheet material with film tear line |
US3613874A (en) * | 1969-08-21 | 1971-10-19 | Reclosable Package Corp | Reclosable package |
US4836378A (en) * | 1987-11-18 | 1989-06-06 | Philip Morris, Incorporated | Package having magnetically coded tear tape or sealing strip |
US4838429A (en) * | 1986-10-10 | 1989-06-13 | Baxter International Inc. | Flexible thermoplastic pouches having easy-open tear strip means and apparatus for making same |
US5494215A (en) * | 1994-06-22 | 1996-02-27 | Sonoco Products Company | Easy-open container having directionally-oriented label tear |
US5855435A (en) * | 1994-05-05 | 1999-01-05 | Sales S.P.A. | Opening and closing device for flexible containers and container provided with such a device |
US20010017947A1 (en) * | 1999-05-11 | 2001-08-30 | Sargento Foods Inc. | Resealable bag for filling with food product (s) and method |
US6416841B1 (en) * | 1997-12-10 | 2002-07-09 | Pechiney Emballage Flexible Europe | Tear tape for plastic packaging |
-
2005
- 2005-04-01 KR KR20-2005-0009011U patent/KR200389024Y1/en active IP Right Grant
- 2005-10-21 US US11/254,968 patent/US20060222272A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3098601A (en) * | 1958-12-31 | 1963-07-23 | Procter & Gamble | Tear tape for thermoplastic packaging materials |
US3535409A (en) * | 1967-01-17 | 1970-10-20 | Tower Products | Method of making sheet material with film tear line |
US3613874A (en) * | 1969-08-21 | 1971-10-19 | Reclosable Package Corp | Reclosable package |
US4838429A (en) * | 1986-10-10 | 1989-06-13 | Baxter International Inc. | Flexible thermoplastic pouches having easy-open tear strip means and apparatus for making same |
US4836378A (en) * | 1987-11-18 | 1989-06-06 | Philip Morris, Incorporated | Package having magnetically coded tear tape or sealing strip |
US5855435A (en) * | 1994-05-05 | 1999-01-05 | Sales S.P.A. | Opening and closing device for flexible containers and container provided with such a device |
US5494215A (en) * | 1994-06-22 | 1996-02-27 | Sonoco Products Company | Easy-open container having directionally-oriented label tear |
US6416841B1 (en) * | 1997-12-10 | 2002-07-09 | Pechiney Emballage Flexible Europe | Tear tape for plastic packaging |
US20010017947A1 (en) * | 1999-05-11 | 2001-08-30 | Sargento Foods Inc. | Resealable bag for filling with food product (s) and method |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100198185A1 (en) * | 2007-06-21 | 2010-08-05 | Goerisch Irmgard | Multi-chamber bag for use with enteral nutrition |
CN104136343A (en) * | 2011-12-23 | 2014-11-05 | 雀巢产品技术援助有限公司 | Flexible sachet having a triangular shape |
US20170216557A1 (en) * | 2013-03-14 | 2017-08-03 | Hollister Incorporated | Medical product package |
US10434282B2 (en) * | 2013-03-14 | 2019-10-08 | Hollister Incorporated | Medical product package |
JP2020075723A (en) * | 2018-11-05 | 2020-05-21 | 凸版印刷株式会社 | Standing pouch having opening shape holding member |
JP7259268B2 (en) | 2018-11-05 | 2023-04-18 | 凸版印刷株式会社 | Standing pouch with opening shape retaining member |
US20200324952A1 (en) * | 2018-12-20 | 2020-10-15 | Conmed Corporation | Medical electrode tear strip |
Also Published As
Publication number | Publication date |
---|---|
KR200389024Y1 (en) | 2005-07-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |