JP2016199292A - Pouch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch comprising a function of capable of being opened and closed repeatedly, at low cost.SOLUTION: There is provided a pouch formed of a laminate having a sealant layer formed of a plastic film as a base material. After an opening part of a nozzle for pouring a content is opened and a part of the content is poured, the nozzle can be folded and can be fixed to a pouch trunk part for closing, so that, the pouch can be opened and closed repeatedly. In addition, by fixing the nozzle to the pouch trunk part, a flap is provided on an intermediate part of the pouch trunk part, and the folded nozzle can be fitted to a dent part disposed on the flap.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pouch. In particular, the present invention relates to a pouch made of a laminate having a plastic film as a base material, which can be repeatedly opened and closed.

  A pouch is a packaging bag made of a laminate of plastic film as a base material, and various forms are used for various purposes and are indispensable for modern life. For example, it is also used as a liquid container, and widely used in the food field such as beverages and retort foods such as curry. In the toiletry field, a variety of products are sold in supermarkets, drug stores, and convenience stores. It is crowded.

  The advantages of pouches are that they are cheaper than containers such as cans and bottles, can be handled with a fine-grained material structure depending on the required quality, and are lightweight and space-saving before filling and distribution and storage. Can be mentioned. In addition, high-definition printing on the layer visible from the surface can improve the image of the product and display necessary information about the contents. Bar code printing is used for product distribution and marketing. It is a source of information.

  Conventionally, liquid bottles such as detergents, bleaches, softeners, shampoos, rinses, and syrups have become established in daily life as products. However, discarding the bottle after the contents have been used up is a problem in terms of economy and environmental protection. In recent years, a refillable pouch has been used. Refillable pouches are cheaper than purchasing new bottles and storage containers each time, and are environmentally friendly from the perspective of reducing waste.

  However, the purchaser has to take time and effort to transfer the contents contained in the refillable pouch to a bottle or a storage container. When transferring the entire amount from the refill pouch to the bottle or storage container, the refill pouch is discarded as it is, so there is no need to close the opening, but only a part of the pouch is refilled. However, a so-called reclose function that can be repeatedly opened and closed by a plug or the like is required.

  Therefore, refillable pouches require members such as screw plugs and straws for reclosing, increasing the number of manufacturing processes and increasing the number of members other than the laminate that constitutes the pouch, resulting in increased manufacturing costs and material costs. It was inevitable that the economy would be impaired. Therefore, there has been a demand for a pouch that can be repeatedly opened and closed without impairing the economy.

  Patent Document 1 proposes that an intermediate seal portion is provided in a pouch and repeatedly opens and closes the pouch, but the opening shape is unsuitable for pouring liquid out of a nozzle like a refill container. In addition, Patent Document 2 proposes a cap effect by folding back the base portion of the intermediate seal portion, but the folding point is released even when a little pressure is applied to the pouch body, and a sufficient reclosing effect is obtained. I haven't got it.

JP 2013-23223 A JP 2013-39935 A

  This invention is made | formed in view of the situation which starts, and makes it a subject to provide the pouch provided with the function which can perform opening and closing repeatedly at low cost.

  As means for solving the above-mentioned problems, the invention according to claim 1 is a pouch comprising a laminate having a plastic film as a base material and a sealant layer, the nozzle opening for pouring the contents After the pouch is opened and a part of the contents is poured out, the nozzle can be bent and fixed to the pouch body to be closed, and the pouch can be repeatedly opened and closed.

  Further, the invention according to claim 2 is that the fixing of the nozzle to the pouch body is performed by providing a flap in the middle of the pouch body and fitting the bent nozzle into the recess provided in the flap. The pouch according to claim 1, characterized in that it is a pouch.

  The invention according to claim 3 is the pouch according to claim 1 or 2, characterized in that the flap is formed by folding and laminating a laminated body of the pouch body part. .

  The invention according to claim 4 is the pouch according to any one of claims 1 to 3, wherein the nozzle is composed only of a laminated body constituting the pouch.

  ADVANTAGE OF THE INVENTION According to this invention, the pouch provided with the function which can perform opening and closing repeatedly can be provided at low cost.

  Moreover, according to the invention of Claim 2, the pouch which can be closed more reliably can be provided.

  Further, according to the invention described in claim 3, it is possible to provide a pouch that can be closed more reliably and cheaply.

  Moreover, according to the invention of Claim 4, the pouch provided with the function which can perform opening and closing repeatedly more inexpensively can be provided.

FIG. 1 is a partial schematic plan view for explaining an embodiment of a pouch according to the present invention. FIG. 2 is a partial perspective schematic view for explaining an embodiment of the pouch according to the present invention.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to this example.

  FIG. 1 is a partial schematic plan view for explaining an embodiment of a pouch according to the present invention. FIG. 2 is a partial perspective schematic view for explaining an embodiment of the pouch according to the present invention.

  The pouch (10) is composed of a laminate having a plastic film as a base material and a sealant layer. The laminated body is overlapped with the sealants facing each other, heat sealed and processed into a bag shape to obtain a pouch (10).

  The pouch (10) has a nozzle (1) at the top of the body (7), and the contents are poured out from the opening (2) of the nozzle (1). The nozzle (1) is also formed by heat sealing (4).

  A flap (5) is provided in the middle of the body (7), and a recess (6) is provided in the width direction of the flap, near the center. When closing the pouch (10), the nozzle (1) is folded from the nozzle root (3), fitted into the recess (6), fixed to the body (7), and the pouch is closed.

  The recess (6) is provided in a shape that is narrower than the width of the nozzle (1) at the flap end (8) and wider than the nozzle (1) near the root (9) of the flap. Therefore, when the nozzle (1) is folded at the base (3) of the nozzle and fitted into the recess (6), the fitting is easy. After fitting, the nozzle (1) is fixed to the body (7). The structure is difficult to return to the original.

  Therefore, the nozzle (1) is fixed to the body (7), and the pouch (10) is kept closed. In the case of opening again, the nozzle (1) can be opened by removing it from the recess (6) and returning the nozzle (1) to its original position. The opening and closing can be repeated.

  Hereinafter, the elements constituting the pouch (10) will be further described. The material which comprises a pouch (10) consists of a laminated body which used the plastic film as the base material. The laminate constituting the pouch (10) is not necessarily limited, and the pouch (10) can be formed if the sealant layer is provided at least in the innermost layer in addition to the base film. In addition, the material and layer structure of the laminate may be designed according to the contents and the properties and purpose of the product.

  For bag making, a sealant layer is provided at least on the inner surface of the laminated body. As a material for the sealant layer, a polyolefin resin is generally used among thermoplastic resins. Specifically, a low density polyethylene resin (LDPE), a medium density polyethylene resin (MDPE), and a linear low density polyethylene resin. (LLDPE), ethylene-vinyl acetate copolymer (EVA), ethylene-α olefin copolymer, ethylene-methacrylic acid resin copolymer and other ethylene resins, polyethylene and polybutene blend resins, and homopolypropylene resins Polypropylene resins such as (PP), propylene-ethylene random copolymer, propylene-ethylene block copolymer, and propylene-α olefin copolymer can be used.

  If necessary, you can improve the image of the product and print necessary information about the contents. For the base film for that purpose, a plastic film made of a polymer material can be used.

The polymer film is a film made of a polymer resin composition, and includes polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamide (nylon-6, nylon-66, etc.), polyimide Etc. can be used, and is appropriately selected according to the application. In particular, when polypropylene or polyethylene terephthalate is used as a base film, it is more preferable in terms of film strength and price.

  Further, for the purpose of improving the storage stability of the contents, an opaque layer for shielding ultraviolet rays such as a colored film can be provided in the laminate. Alternatively, a gas barrier layer can be provided in the laminate.

  For the gas barrier layer, a metal foil such as an aluminum foil can be used as the gas barrier layer. If it is not appropriate to use a metal foil, a laminate may be formed by laminating a gas barrier film. The gas barrier film can be laminated using an adhesive, for example, using a dry lamination method, or can be laminated by extruding a thermoplastic resin using an extruder.

  In the case of a gas barrier film, the gas barrier layer can be composed of a vapor deposition layer and a coating layer of an inorganic compound. After providing an anchor coat on the base film, the vapor deposition layer and the coating layer are sequentially provided. Alternatively, a gas barrier film having a gas barrier layer may be bonded to the base film.

  For example, urethane acrylate can be used for the anchor coat layer of the gas barrier film. The coating thickness is preferably in the range of 50 to 65 nm. For the formation of the anchor coat layer, a coating method using a printing technique such as gravure coating with a paint in which a resin is dissolved in a solvent can be used, and a coating film can be formed using a generally known coating method.

  As a method of forming a vapor deposition layer, an inorganic compound such as SiO or AlO is coated on a base film provided with an anchor coat layer using a vacuum vapor deposition method, and an inorganic compound layer is formed by a vacuum vapor deposition method. it can. The thickness of the vapor deposition layer is preferably 15 nm to 30 nm.

  As a method for forming the coating layer, an aqueous solution or water / alcohol containing at least one of a water-soluble polymer and (a) one or more alkoxides or hydrolysates thereof, or (b) tin chloride. A coating agent mainly composed of a mixed aqueous solution is applied onto a film and dried by heating to form an inorganic compound layer by a coating method to form a coating layer. At this time, the adhesion with the anchor coat layer can be improved by adding a silane monomer to the coating agent.

  An inorganic compound layer has a gas barrier property only by a coating film formed by a vacuum deposition method, but a coating layer, which is an inorganic compound layer formed by a coating method, is formed so as to overlap with a deposited layer that is an inorganic compound layer formed by a vacuum deposition method. be able to.

  By combining these two layers, a reaction layer of both layers is formed at the interface between the inorganic compound layer by the vacuum deposition method and the inorganic compound layer by the coating method, or the inorganic compound layer by the coating method becomes an inorganic compound layer by the vacuum deposition method. A dense structure is formed by filling and reinforcing defects such as pinholes, cracks, and grain boundaries, or by reinforcing them, so that high gas barrier properties, moisture resistance, and water resistance are achieved, and flexibility that can withstand deformation is achieved. Therefore, it can also be suitable as a packaging material.

  Further, when SiO is used as the barrier layer, it is transparent, so that the contents can be seen with eyes from the outside of the pouch. These may be properly used depending on the application and required quality.

  Printing can be applied to a layer of the pouch laminate that is visible from the outside of the pouch. Printing can display information and logo marks related to the contents, and can display images and examples of use related to the contents as characters and images.

  Although there are no particular restrictions on the printing method and printing ink, it is appropriate as long as the printability to film, design properties such as color tone, adhesiveness, and safety as a food container are considered among known printing methods. For example, a gravure printing method, an offset printing method, a gravure offset printing method, a flexographic printing method, or the like can be used. Of these, the gravure printing method can be preferably used.

  For example, the flap can be formed by stacking the stack of body parts so as to insert a gusset and heat-sealing the overlapping part. A recess (6) is provided in the width direction of the flap and near the center. The method for providing the depression is not particularly limited, and can be appropriately selected from known processing methods such as punching.

  In addition, it is also possible to prepare a flap as a separate member and provide it by heat sealing or the like at a predetermined position of the pouch body. Similarly, the depression can be appropriately selected from known processing methods such as punching.

  The position where the flap is provided is in the middle of the pouch body, and a position suitable for fitting when the nozzle is folded may be selected. Further, in order to fix the fitted nozzle so that it is difficult to come off, it is more preferable that the flap is provided at a downward angle with respect to the pouch body as shown in FIG.

  In addition to the shape shown in FIGS. 1 and 2, the recess may have other shapes as long as it has a so-called clip effect in which the nozzle is folded and fixed to the body portion and the pouch is closed.

  The nozzle can be formed by heat-sealing both side portions of the passage that leads from the inside of the pouch to the opening. When the contents are initially sealed, the tip of the nozzle is also heat-sealed and closed, but when opening, the tip is cut with a tool such as a cutter knife or scissors, or an easy-open mechanism By providing this, it is possible to use a method of providing an opening by tearing by hand.

  In this way, the nozzle provided only by heat sealing with respect to the laminated body requires fewer members than the method of incorporating other members such as straws and screw plugs into nozzles and openings. Since the result process is simplified, a merit in cost can be obtained. On the other hand, there is no problem in using all of the contents at once, but when using it in a small amount, it is necessary to close the pouch in some way.

  In the present invention, the simplified nozzle opening is bent from the base of the nozzle to close the opening, and the bent nozzle is fitted into a recess provided in the flap and fixed to the pouch body. By doing so, the pouch can be kept closed.

  In the case of opening again, the nozzle can be opened by removing the nozzle from the depression provided in the flap and returning it to the original position. In this way, opening and closing can be performed with a simple operation, and in addition, the opening and closing can be performed repeatedly.

  Thus, according to the present invention, a pouch having a function capable of repeatedly opening and closing can be provided at low cost.

  The present invention can be used not only for refill containers using liquid pouches, but also for refill containers containing powder as contents.

DESCRIPTION OF SYMBOLS 1 ... Nozzle 2 ... Opening part 3 ... Base of nozzle 4 ... Heat seal part 5 ... Flap 6 ... Depression 7 ... Trunk part 8 ... Flap edge part 9 ..Flap root 10 ... pouch

Claims (4)

  A pouch made of a laminate having a plastic film as a base material and having a sealant layer, and after opening a part of the nozzle for pouring the contents and pouring part of the contents, the nozzle is folded and the pouch cylinder A pouch characterized in that it can be fixed and closed to a part and can be repeatedly opened and closed.   2. The pouch according to claim 1, wherein the fixing of the nozzle to the pouch body is performed by providing a flap in the middle of the pouch body and fitting a bent nozzle in a recess provided in the flap.   3. The pouch according to claim 1, wherein the flap is formed by folding and laminating a laminated body of the pouch body portion.   The said nozzle is comprised only from the laminated body which comprises a pouch, The pouch in any one of Claims 1-3 characterized by the above-mentioned.