JP2014037247A - Easy open pouch and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy open pouch having superior visibility when opened, preventing injuries to hands or fingers, and improved in openability, and to provide a method of manufacturing the same.SOLUTION: An easy open pouch is provided with a notch 4 for opening, which is formed by cutting an outer edge 3 of a sealing part 2 of the pouch 1. In the easy open pouch, a portion where the outer edge 3 of the sealing part 2 intersects with a cut of the notch 4 comprises a curved cut part; a first rectilinear cut part 4a is successively formed in one first curved cut part 4a, and the tip end of the other second curved cut part 4b is brought into abutment with the first curved cut part 4a.

Description

The present invention relates to an easy-open pouch and a manufacturing method thereof, and more particularly to an easy-open pouch having excellent visibility at the time of opening, preventing injuries of hands, fingers, etc., and having excellent openability, and a method for manufacturing the same.

Conventionally, when taking out the contents of food, detergent, cosmetics, shampoo, rinse, etc. stored in the pouch, a notch (I notch) that tears the pouch seal portion linearly or a V notch is provided in the pouch seal portion. An easy-open pouch that facilitates the removal of the contents has been proposed (see Patent Documents 1 and 2). In addition, a synthetic resin packaging bag in which a notch for opening the packaging bag is formed, and the portion where the outer edge line of the heat-bonding portion intersects with the cut line of the notch has an arc shape with a diameter R of 3 mm to 16 mm is also proposed. (Patent Document 3).

JP2001-219944 JP 2001-233355 A JP-A-9-39986

However, the above-mentioned pouch of Patent Document 1 has a notch with a narrow linear width, so that the visibility of the notch at the time of opening is inferior, and the hands at the sharp corners of the seal portion separated by the notch at the time of opening, There is a risk of injury such as fingers.

On the other hand, although the pouch of Patent Document 2 can provide visibility of the notch at the time of opening, similarly to Patent Document 1, the sharp corners of the seal portion separated by the notch at the time of opening can injure hands and fingers. There is a risk.

Moreover, although the pouch of patent document 3 prevents the hand, a finger | toe, and a packaging bag from being damaged, there exists a point which should still be improved in openability.

According to the present invention, in the easy-opening pouch in which the outer edge of the seal portion of the pouch is cut to form a notch for opening, the portion where the outer edge of the seal portion and the notch cut intersect is formed by a curved cut portion. A first linear cut portion is formed continuously with the first curved cut portion, and a tip portion of the other second curved cut portion is brought into contact with the first curved cut portion. An easy-open pouch is provided. In the easy-open pouch of the present invention, 1. The angle formed by the tangent lines of the first and second curved cut portions is 90 degrees or approximately 90 degrees. 2. forming a second linear cut portion toward the tip portion in the second curved cut portion, and abutting the tip portion with the first curved cut portion; It is preferable that an angle formed between a tangent line of the first curved cut portion and an inclined line of the second linear cut portion is 90 degrees or substantially 90 degrees.

According to the present invention, in the method of manufacturing an easy-open pouch in which the outer edge of the seal portion of the pouch is cut to form a notch for opening, one end of the cutting blade is connected to the first curved blade portion and the first curved blade portion. A first straight blade portion that is continuous with the one curved blade portion, the other end portion of the cutting blade as a second curved blade portion, and a tip portion of the second curved blade portion as the first curved blade portion. There is provided a method for manufacturing an easily openable pouch, characterized in that a notch is formed from an outer edge of the seal portion by cutting the contact portion against a curved blade portion. And in the manufacturing method of the easily openable pouch of this invention, 1. 1. The angle formed by the tangent lines of the first and second curved blade portions is 90 degrees or substantially 90 degrees. 2. providing the second curved blade portion with a second linear blade portion toward the tip portion and contacting the tip portion with the first curved blade portion; It is preferable that an angle formed between the tangent line of the first curved blade portion and the inclined line of the second linear blade portion is 90 degrees or substantially 90 degrees.

According to the easy-open pouch of the present invention, the notch is highly visible when the pouch is opened, and it is possible to prevent injuries such as hands and fingers, and to further improve the openability. Can do. Moreover, according to the manufacturing method of the easy-open pouch of the present invention, it is not necessary to grind and abut the tip of the cutting blade when forming the notch, and the cutting blades when forming the notch It is possible to prevent the separation of the front end portion, improve durability, and easily manufacture the easy-open pouch.

It is a figure which shows the easily openable pouch of this invention. It is an enlarged view of easy-opening part AA in the easy-opening pouch of this invention. It is an enlarged view of easy opening part AA of other embodiment in the easily openable pouch of this invention. It is a figure which shows the cutting blade which processes the easy opening part of the easily openable pouch of this invention. It is a figure which shows other embodiment of the cutting blade which processes the easy-opening part of the easily openable pouch of this invention.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a view showing an easy-open pouch according to the present invention, wherein 1 is a pouch, 2 is a seal portion, 3 is an outer edge of the seal portion, 4 is a notch (notch), and the seal portion 2 is the outer periphery of the pouch 1. It is formed in the part. As a form of the pouch 1, a pouch such as a three-side seal type flat pouch, a standing pouch, a square bottom bag, a center seal (back-attached) type pouch, or the like is used. Although not shown, the pouch 1 is used as a standing pouch. A notch 4 for opening may be formed by cutting out the outer edge of the seal part 2 forming the pouring part.

As shown in the enlarged view of FIG. 2, the notch 4 formed by cutting the outer edge 3 of the seal portion 2 on the outer peripheral portion of the pouch 1 is formed from the outer edge 3 of the seal portion 2 of the pouch 1, and the shape thereof is a seal. The portions where the outer edge 3 of the portion 2 and the notch 4 intersect are the first and second curved notched portions 4a and 4b. The first curved cut portion 4a is continuously formed with a first linear cut portion 4c, and the tip of the other second curved cut portion 4b is connected to the first curved cut portion 4a. It is made to contact. Further, the first curved cut portion 4a and the first linear cut portion 4c are further extended inward from the contact point 4d between the first curved cut portion 4a and the second curved cut portion 4b. Is done.

The angle formed by the tangent lines between the tangent line α of the first curved cut portion 4a of the notch 4 and the tangent line β of the second curved cut portion 4b is set to 90 degrees, or approximately 90 degrees, so that The visibility of the notch 4 can be further improved.

Further, in the above-described notch 4, as shown in FIG. 3, the second curved cut portion 4b is formed with a second linear cut portion 4e toward the tip portion, and the tip portion of the second linear cut portion 4e is formed. You may make it contact | abut to the 1st curvilinear cut | notch part 4a, and the visibility of the notch 4 at the time of opening the pouch 1 improves further by setting it as such a notch 4. FIG.

The angle formed between the tangent line α of the first curved cut portion 4a of the notch 4 and the inclined line θ of the second linear cut portion 4e formed in the second curved cut portion 4b is 90 degrees or substantially 90 °. By setting the degree, the visibility of the notch 4 described above can be further improved.

Thus, by forming the notch 4 shown in FIGS. 2 and 3 as a notch for opening the pouch 1, the notch 4 is highly visible when the pouch 1 is opened, and injury to hands, fingers, etc. is prevented. In addition, the pouch 1 can be further improved in opening performance.

FIG. 4A is a view showing a cutting blade used in the method for manufacturing an easy-open pouch according to the present invention, wherein 10 is a cutting blade, 11 and 12 are end portions of the cutting blade, and 13 is one of the cutting blades 10. The first curvilinear blade portion provided at the end portion 11, 14 is the first straight blade portion provided continuously to the first curvilinear blade portion 13, and 15 is provided at the other end portion 12 of the cutting blade 10. The cutting blade 10 is made of a band-shaped member (not shown), and a Thomson blade is particularly preferable.

And when forming the notch 4 for opening in the seal part 2 of the pouch 1 using this cutting blade 10, as shown in FIG.4 (b), it provided in one edge part 11 of the cutting blade 10. FIG. The tip end portion of the second curved blade portion 15 provided at the other end portion 12 is brought into contact with the first curved blade portion 13. Further, the first curved blade portion 13 and the first linear blade portion 14 are further extended inwardly from the contact 16 between the first curved blade portion 13 and the second curved blade portion 14. In this state, the cutting blade 10 is operated to cut from the outer edge 3 of the seal portion 2 of the pouch 1 to form the notch 4 described above.

The angle formed by the tangent lines between the tangent line α of the first curved blade part 13 at the end 11 of the cutting blade 10 and the tangent line β of the second curved blade part 15 at the end 12 is 90 degrees or substantially By setting the angle to 90 degrees, the contact state between the end portions 11 and 12 of the cutting blade 10 is stabilized, the manufacturing of the cutting blade 10 is facilitated, and the durability can be further improved.

Further, as shown in FIG. 5A, the cutting blade 10 is provided with a second linear blade portion 17 directed toward the tip portion on the second curved blade portion 15 of the other end portion 12 of the cutting blade 10, As shown in FIG. 5B, the tip of the second linear blade portion 17 is brought into contact with the first curved blade portion 13, and the cutting blade 10 is operated in this state, so that the seal portion of the pouch 1 is operated. The notch 4 is formed by cutting from the outer edge 3 of 2. Further, by forming the notch 4 in the pouch 1 using such a cutting blade 10, the separation of the tip portions of the cutting blades can be further prevented and the durability thereof can be improved.

Note that the tangent line α of the first curved blade portion 13 at one end portion 11 of the cutting blade 10 and the inclined line θ of the second linear blade portion 17 provided at the second curved blade portion 15 at the end portion 12. Is 90 degrees, or approximately 90 degrees, the contact state between the end portions 11 and 12 of the cutting blade 10 is stabilized, making the cutting blade 10 easy to manufacture and durable. Can be further improved.

Thus, when the notch 4 is formed from the outer edge 3 of the seal part 2 of the pouch 1 using the cutting blade 10 shown in FIGS. 4 and 5, the notch 4 is formed by cutting the seal part 2. In addition, since it is not necessary to make the tip of the cutting blade 10 thin and contact by grinding, the cutting blade 10 can be manufactured efficiently and an easily openable pouch can be easily manufactured. Moreover, the separation of the end portions of the end portions 11 and 12 of the cutting blade 10 when forming the notch 4 is prevented, and the durability can be improved.

The film material used in the easy-open pouch of the present invention is not particularly limited, and examples of the resin material suitable for the film material include crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline Polybutene-1, crystalline poly-4-methylpentene-1, low density polyethylene, medium density polyethylene, or high density polyethylene, ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA) ion crosslinking Polyolefins such as olefin copolymers (ionomers); Aromatic vinyl copolymers such as polystyrene and styrene-butadiene copolymers; Halogenated vinyl polymers such as polyvinyl chloride and vinylidene chloride resins; Acrylonitrile-styrene copolymers ; Acrylonitrile-styrene-butadiene co Nitrile polymers such as coalescence; nylons 6, nylon 66, polyamides such as para or metaxylylene adipamide; polyesters such as polyethylene terephthalate and polytetramethylene terephthalate; various polycarbonates; polyacetals such as polyoxymethylene And the like. A film-like pouch material made of these materials is used after being unstretched, uniaxially stretched, or biaxially stretched.

Furthermore, as the film material used in the easy-open pouch container of the present invention, these film materials can be constituted by a single layer or by laminating two or more kinds, and these film-like pouch materials One or two or more types can be laminated, and one or more of these film materials, metal foil such as aluminum, metal or metal oxide vapor deposition film, paper, Cellophane or the like can also be laminated. Preferred film materials include, for example, a stretched nylon film as an outer layer, a two-layer configuration having a polyolefin film such as low density polyethylene and polypropylene as an inner layer, a stretched polyester film as an outer layer, and a two-layer configuration having a polyolefin film as an inner layer, and Among these, between the outer layer films, metal foil such as aluminum, stretched nylon film,
Examples include three-layer to four-layer laminated films in which barrier materials such as stretched polyester films are laminated. In the production of these laminated films, an adhesive or an anchor agent may be interposed between the respective layers as necessary. it can.

As is clear from the above description, the easy-open pouch and the manufacturing method thereof of the present invention can be suitably used for an easy-open pouch provided with easy-openability by a notch.

DESCRIPTION OF SYMBOLS 1 Pouch 2 Seal part 3 Outer edge 4 of a seal part Notch 10 Cutting blade 11, 12 End part 13 of a cutting blade 1st curved blade part 14 1st linear blade part 15 2nd curved blade part 16 Contact 17 2nd straight line Shaped blade

Claims (8)

In the easy-open pouch in which the outer edge of the seal portion of the pouch is cut to form a notch for opening, the portion where the outer edge of the seal portion and the notch cut intersect is a curved cut portion, and one of the first curved cut portions A first straight cut portion is formed continuously, and the tip portion of the other second curved cut portion is brought into contact with the first curved cut portion. The easy-open pouch according to claim 1, wherein an angle formed between tangents of the first and second curved cut portions is 90 degrees or substantially 90 degrees. 2. The ease of claim 1, wherein the second curved cut portion is formed with a second linear cut portion toward the tip portion, and the tip portion is in contact with the first curved cut portion. Openable pouch. The easy-open pouch according to claim 3, wherein an angle formed between a tangent line of the first curved cut portion and an inclined line of the second straight cut portion is 90 degrees or substantially 90 degrees. In an easy-opening pouch manufacturing method in which an outer edge of a sealing portion of a pouch is cut to form a notch for opening, one end of a cutting blade is continuously connected to the first curved blade portion and the first curved blade portion. And the other end of the cutting blade is a second curved blade portion, and the tip of the second curved blade portion is brought into contact with the first curved blade portion. The manufacturing method of the easily openable pouch characterized by performing notch | incision and forming a notch from the outer edge of the said seal part. 6. The method for producing an easily openable pouch according to claim 5, wherein an angle formed between tangents of the first and second curved blade portions is 90 degrees or substantially 90 degrees. 6. The easy-opening according to claim 5, wherein the second curved blade portion is provided with a second linear blade portion toward the tip portion, and the tip portion is in contact with the first curved blade portion. A method for producing a pouch. The easy-open pouch according to claim 7, wherein an angle formed between a tangent line of the first curved blade portion and an inclined line of the second linear blade portion is 90 degrees or substantially 90 degrees.

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