KR20090043668A - Envelopes for packaging liquid beverages - Google Patents

Envelopes for packaging liquid beverages Download PDF

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Publication number
KR20090043668A
KR20090043668A KR1020070109346A KR20070109346A KR20090043668A KR 20090043668 A KR20090043668 A KR 20090043668A KR 1020070109346 A KR1020070109346 A KR 1020070109346A KR 20070109346 A KR20070109346 A KR 20070109346A KR 20090043668 A KR20090043668 A KR 20090043668A
Authority
KR
South Korea
Prior art keywords
film
laminated
bag
liquid food
stretched
Prior art date
Application number
KR1020070109346A
Other languages
Korean (ko)
Inventor
임경보
Original Assignee
(주) 보성인더스트리
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 (주) 보성인더스트리 filed Critical (주) 보성인더스트리
Priority to KR1020070109346A priority Critical patent/KR20090043668A/en
Publication of KR20090043668A publication Critical patent/KR20090043668A/en

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Classifications

    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin 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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • 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
    • B65D75/26—Articles or materials wholly enclosed in laminated sheets or wrapper blanks
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets

Abstract

The present invention relates to a bag for packaging liquid food. The liquid food packaging bag is a conventional bag formed of a laminated film composed of LLDPE film, aluminum foil and PET film, in which the PET film penetrates the main wall of the bag, but the aluminum foil and the LLDPE film do not penetrate. It was composed of a liquid food packaging bag formed by forming a groove. According to the present invention, a liquid food packaging bag having excellent sealing effect can be obtained by a simple method.

Description

ENVELOPES FOR PACKAGING LIQUID BEVERAGES}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag for packaging liquid goods, and in particular, a liquid product composed of a stretched hard film and a soft film laminated, and a liquid product configured to insert a straw into a liquid food housed therein, particularly for liquid food packaging. It's about the turret.

Liquid foods such as liquid health foods or fruit juices are sold by infusion into bags formed of laminated films to maintain airtightness. Most of these sacks tear one edge and drink the contents or insert a straw into the sacks to suck the contents.

The turret, which is designed to suck the contents by inserting the straw into the sidewall of the turret, is difficult to insert the straw because the stretched hard film constituting the laminated film has a strong property, so most of the turret forms a hole penetrating the sidewall of the turret. The straw was inserted into the hole to suck up the liquid food contained therein. Thus, the bag having the hole into which the straw is inserted is formed so that the hole penetrates the laminated film forming the side wall of the bag, and the hole is formed by adhering the blocking sealing film to the inner surface of the unstretched soft sealant film constituting the bag. By closing, the contents do not leak out.

In the case of forming the bag using only the hard stretched film, the adhesive force of the periphery of the bag appears to be inferior, and thus the adhesive part is dropped, and the unstretched soft film is poor in printability and soft, and thus easily broken. Therefore, the bag of the form mentioned above is manufactured using the laminated | multilayer film which laminated | stacked the unstretched film on the stretched film. The laminated film which laminated | stacked the unstretched soft sealant film on the inner surface of the stretched film is used. When the bag was formed, the unstretched soft film was placed on the inner surface of the bag and welded to each other to be completely sealed.

Typical examples of the stretched film include PET film, nylon film, OPP film, and the like, and typical examples of the unstretched flexible sealant film include LLDPE film, CPP film, EVA film, and the like.

In recent years, in order to improve the airtightness of the bag and maintain the original shape of the bag, a laminated film in which aluminum foil is laminated between a stretched film and an unstretched soft sealant film has also been used.

The problem with this bag is that there is a risk that the contents may leak out through the hole if the film adhered to the inner surface of the laminated film to close the hole is not completely adhered. In particular, the bag described above requires the manpower and time required to make the seal film separately by bonding the seal film in a band and to bond the band to the inner surface of the bag so that the seal film is positioned at the correct position on the inner surface of the bag. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a straw, such as a straw, in a conventional bag formed of a laminated film composed of the above-described stretched film and an unstretched soft sealant film, while maintaining the airtightness of the bag and making it easy to manufacture. It is to provide the bag.

The object of the present invention described above is achieved by the bag of the present invention such that a hole is formed in the stretched film constituting the outer surface of the bag and a groove is formed in the unstretched sealant film.

The liquid food packaging bag of the present invention is a conventional bag formed of a laminated film composed of a stretched film and an unstretched soft sealant film, wherein the bottom surface is unstretched soft sealant that penetrates the stretched film on the main wall of the bag but does not penetrate the unstretched film. It consists of the bag for liquid food packaging formed by forming the groove | channel comprised from the surface of a film.

In the liquid food packaging bag of the present invention, the stretched film constitutes the inner surface of the bag and the unstretched soft sealant film constitutes the outer surface of the bag.

The stretched film used in the present invention includes a PET film, a nylon film, an OPP film, and the like, and the non-stretched flexible sealant film includes, for example, an LLDPE film, a CPP film, an EVA film, and the like.

As the laminated film used in the present invention, for example, a laminated film composed of PET film / aluminum foil / LLDPE film, a laminated film composed of PET film / aluminum foil / nylon film / CPP film, and a laminated film composed of PET film / LLDPE film , Laminated films composed of nylon film / LLDPE film, laminated films composed of PET film / nylon film / LLDPE film, laminated films composed of PET film / nylon film / CPP film.

The top of the bag is formed with a hole into which a straw is inserted. The hole penetrates the stretched film, but no hole is formed in the unstretched flexible sealant film, so that the surface of the unstretched flexible sealant film becomes the bottom when viewed as a whole of the laminated film. It was formed in the shape of a groove. The above-mentioned grooves are preferably formed using a laser. The intensity of the laser for forming the grooves according to the present invention is adjusted so that holes are formed in the stretched film, but no holes are formed in the unstretched flexible sealant film, so that the holes penetrating the stretched film are in the form of grooves based on the laminated film. It should be possible. The above-mentioned hole is preferably formed in a circular shape, but may be formed in another shape, for example, a square, an oval or a star. The laser apparatus is a conventional laser apparatus used to punch holes in a synthetic resin film, and an example of such a laser apparatus is a laser manufactured by Sunks Co., Ltd., Japan. The diameter of the grooves described above is preferably formed to be slightly larger than the outer diameter of the straw used. However, the above-described grooves may be formed in different sizes depending on the shape thereof. For example, it may be formed such that + is formed inside a + or a circle having a left and right length larger than the diameter of the straw.

The intensity of the laser may vary depending on the source of the laser machine, but it is generally desirable to have a power in the range of 30-80 watts.

According to the present invention, since grooves are formed only on the outer surface of the laminated film constituting the bag without adhering the sealing film to the inner surface of the bag, there is an advantage that there is no loss of unnecessary material and no drop in airtightness due to the poor adhesion state of the sealing film. .

In particular, according to the present invention, the manufacturing process is simple, so that the loss of manpower caused by making a separate film to be bonded to the inside surface of the bag can be produced easily and can be used easily.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a front view of a bag for packaging a product according to the present invention manufactured using a laminated film composed of PET film / aluminum foil / LLDPE film, wherein the bag 10 has a groove 12 at the upper end of the front side wall.

FIG. 2 is a cross-sectional view of the laminated film 16 constituting the front sidewall 14 of the bag according to the present invention, and FIG. 3 is a cross-sectional view of the upper end portion of the bag according to the present invention, and according to FIG. LLDPE film 18 constituting the inner surface of the film and PET film 20 constituting the outer surface of the bag and aluminum foil 22 laminated between the LLPDE film 18 and the PET film 20. When the bag is formed, as shown in FIG. 3, the aforementioned LLDPE film 18 is positioned on the inner surface of the bag and the PET film 20 is located on the outer surface of the bag.

In the laminated film 16, grooves 12 into which straws such as straws are inserted are formed. The groove 12 was formed to penetrate the PET film 20 constituting the laminated film 16, and the bottom 24 of the groove 12 was composed of the surface of the aluminum foil 22.

According to this configuration, the groove 12 penetrates the PET film, which is difficult to penetrate the end of the straw, such as a straw, and the remaining aluminum foil 22 and the LLPDE film 18 can be easily punched by the straw. The straw inserted into the can be easily inserted into the inside of the bag.

1 is a front view of the present invention,

2 is a cross-sectional view showing an example of a laminated film used in the present invention,

3 is an enlarged cross-sectional view of the upper end of the bag of the present invention.

Claims (5)

A liquid food packaging bag formed of a laminated film composed of a stretched film and an unstretched film and configured to have a non-stretched soft sealant film disposed on an inner surface thereof, the liquid food packaging bag having a stretched film passing through the sidewall of the bag and having a bottom surface composed of a surface of the unstretched soft film. A liquid food packaging bag formed by forming a groove (12). The liquid food packaging bag according to claim 1, characterized in that the aforementioned groove (12) is formed by a laser. 2. The liquid food packaging bag according to claim 1, wherein the laminated bag is a laminated film in which aluminum foil is laminated between the stretched film and the unstretched soft sealant film, and the bottom of the groove 12 is composed of the surface of the aluminum foil. The liquid food packaging bag of claim 1, wherein the stretched film is selected from PET film, nylon film, and OPP film, and the unstretched flexible sealant film is selected from LLDPE film, CPP film, and EVA film. According to claim 1 or 3, wherein the laminated film is a laminated film composed of PET film / aluminum foil / LLDPE film, laminated film composed of PET film / aluminum foil / nylon film / CPP film, laminated film composed of PET film / LLDPE film, A laminated film selected from a laminated film consisting of a nylon film / LLDPE film, a laminated film consisting of a PET film / nylon film / LLDPE film, and a laminated film consisting of a PET film / nylon film / CPP film.
KR1020070109346A 2007-10-30 2007-10-30 Envelopes for packaging liquid beverages KR20090043668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070109346A KR20090043668A (en) 2007-10-30 2007-10-30 Envelopes for packaging liquid beverages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070109346A KR20090043668A (en) 2007-10-30 2007-10-30 Envelopes for packaging liquid beverages

Publications (1)

Publication Number Publication Date
KR20090043668A true KR20090043668A (en) 2009-05-07

Family

ID=40854350

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070109346A KR20090043668A (en) 2007-10-30 2007-10-30 Envelopes for packaging liquid beverages

Country Status (1)

Country Link
KR (1) KR20090043668A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013036000A1 (en) * 2011-09-06 2013-03-14 씨제이제일제당 (주) Packaging pouch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013036000A1 (en) * 2011-09-06 2013-03-14 씨제이제일제당 (주) Packaging pouch

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