JPH08253238A - Paper container for semisolid - Google Patents

Abstract

PURPOSE: To provide an one-piece paper container excellent in economical efficiency, largely opened to facilitate the taking-out of content and improved in disposal treatment after use by providing a tear piece held between two weak lines to a square pole-shaped body part and tearing the body part from the end part of the tear piece to open the same. CONSTITUTION: A tear piece H formed by two parallel weak lines 6 is provided to the upper parts of the side wall panels 1, 2, 3, 4 of a body part and a notch 7 is provided to one end part 8 of the tear piece H to make it easy to obtain the chance of tear. The other end part 8' of the tear piece H crosses a heat sealing part 5 and an anti-heat sealing agent is partially applied to either one of both end parts 8, 8' in order to traverse a carton blank 10 to smoothly tear the same. Inverted Y-shaped folds 9 are longitudinally provided to two opposed side panels 1, 3 at the part below the weak lines 6 so as to easily fit the upper and lower parts of a paper container 10 cut off along the tear piece H.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-cost paper container which facilitates taking out a semi-solid material having low fluidity.

[0002]

2. Description of the Related Art Conventionally, semi-solid yogurt, soft margarine, soft cheese, and other foods, and water-based paints that are close to liquid but are viscous, are cup-shaped containers with a wide-mouthed lid so that they can be easily taken out during use. It is filled in small pail cans made of metal or plastic. Some products with high added value come in extruded tubes.
Taking yogurt as an example, seal the upper part of a paper or plastic cup with a gentle taper,
A three-piece container with a plastic lid over it is generally used.

[0003]

However, the container with a lid as described above has a large opening so that the contents can be taken out easily, and the appearance is good, but it is a three-piece container, and the material is also manufactured. There is a problem that it costs too much. In addition, although the body and lid materials made of plastic or metal have excellent protection of the contents, there is a problem in that they are difficult to dispose after use. The present invention has been made in view of the above problems,
(EN) It is an object to provide a semi-solid paper container which is a one-piece paper container, which is excellent in economy, has a large opening, can easily take out contents, and has good disposability after use.

[0004]

DISCLOSURE OF THE INVENTION The present invention, which has been made to solve the above-mentioned problems, comprises a tearing piece sandwiched between two weakening lines in a square columnar body, and from the end of the tearing piece. The body portion is torn and opened, and in at least a pair of opposing side walls of the body portion, a fold line extending downward from a position lower than the weakening line is provided in a central portion of the side wall, and the weakening line is Formed by half-cutting, at the portion where the tear piece intersects the longitudinal heat-sealing portion of the body portion, an anti-sealing material is coated on either of the opposing heat-sealing surfaces, which is a semi-solid material. Article paper container is the gist.

[0005]

According to the present invention, it is possible to easily open the body portion largely even though it is a one-piece paper container.
Like the conventional cup-shaped container, it is easy to take out the contents with a spoon or the like. In addition, the lower part of the paper container opened and separated with a tear piece pushes the opposite side wall panels inward, the remaining two side walls also bend from the center fold line, and in this state, the upper end of the body part that was separated when opened The part can be covered as a lid.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings. FIG. 1 is a development view of a carton blank 10 for a semi-solid paper container according to the present invention. The paper container is formed from a one-piece carton blank 10, and as shown in FIG. 1, the paper container has four side wall panels 1.
4 to 4 and the heat-sealing portion 5, a top molding portion A connected through a fold line 16 at the upper end edge of the body portion, and a bottom molding connected through a fold line 15 at the lower end edge of the body portion. It is composed of part B. The top forming portion A is formed into a so-called gable top having a gable roof shape. Bottom forming part B
Are molded to form a flat bottom.

Although the above is no different from the conventional gable top carton, in the present invention, the tear piece H formed by the two parallel weakening lines 6 is provided on the upper portion of the body side wall panel. In addition, a notch 7 is provided at one end 8 of the tear piece to facilitate the chance of tearing. Furthermore, the other end 8 ′ of the tear piece H intersects the heat seal portion 5. The both ends 8 and 8'oppose each other,
Since it is the part where a heat seal for strong tube attachment is performed with a frame sealer, etc., in order to perform smooth tearing across the carton blank, one of the opposite end parts 8 and 8'will be pre-heated. It is necessary to partially coat the sealant.

As shown in FIG. 1, two opposite side wall panels 1, 3 or all side wall panels are provided with an inverted Y shape,
Alternatively, an I-shaped vertical folding line is provided in the central portion of the side wall panel below the weakening line 6. The purpose of this is to make it easy to fit those that cannot be fitted, since the paper containers separated by the tear pieces have the same mouth and neck.
That is, when the opposite side wall panels are pushed inward in the lower part of the separated paper container, the remaining two side walls are also bent from the fold line in the center, and in this state, the upper end of the separated body part is used as a lid. Can be covered.

FIG. 2 shows a blank cross section of the weakening line 6. Laminated material 20 for semi-solid paper container according to the present invention
As shown in FIG. 2, a polyethylene layer 22 is provided on both sides of a paperboard layer 21 such as a kraft type paper, and a printing layer 23 is provided on the outermost surface. As shown in FIG. 2 (a), the weakening line 6 is provided with a half cut 24 as shown by a dotted line by pushing in a blade die whose blade depth is adjusted from the outermost surface of the laminated material 20. In addition, in order to improve the tearability, as shown in FIG.
You may double provide the half cut 25 shown with a dashed-dotted line from the back side of this. However, the half-cut 24 and the half-cut 25 are slightly out of phase with each other in the direction orthogonal to the weakening line 6, as shown in FIG. 2C showing the aa ′ cross section of FIG. 2B. It is preferable. In FIG. 2C, the phase shift width is indicated by d. The depth of the half cut and the degree of pitch must not impair the physical strength required for the paper container to an extreme extent, and on the other hand, should provide tearability in a certain direction. In addition, in order to obtain good tearability, it is preferable that the line of weakness and the direction of the grain match. The surface shape of the tear piece H can be selected from various shapes as shown in FIG. Further, the innermost polyethylene layer 22 of the laminated material 20 is torn at the same time as the intermediate paperboard layer by the paperboard initiative type, but it is a necessary condition that it is sufficiently adhered to the paperboard layer 21. As described above, the weakening line 6 is processed at the same time as the punching in the carton blank punching step at the final stage of the manufacturing process. You may make it coat a sealing material. In this case, it is possible to process perforations that penetrate the laminated material instead of half-cutting, and tearability is greatly improved. However, the economic advantage of the present invention cannot be utilized due to the lengthened process.

FIG. 3 is an explanatory view of opening and resealing of a semi-solid paper container according to the present invention. First, as shown in FIG. 3 (a), the tear piece is raised from the notch 7 provided at the end of the tear piece H, and the end portion is held with a finger to tear it horizontally to the end, as shown in FIG. 3 (b). As shown, the paper container can be opened and closed separately. Next, when the contents are taken out by an appropriate method and the remaining portion is temporarily stored, as shown in FIG. 3C, when the side wall panels facing the body part of the paper container are pushed inward in the arrow direction, The other two side wall panels are also folded inward in a V shape by the fold line 9 provided in advance, and the space area of the opening is reduced. In this state, once the removed upper part is covered, it can be easily fitted and resealed as shown in FIG. 3 (d). Alternatively, as shown in FIG. 4, the tear piece H may be torn, the side wall is left open, and the fold line provided on the side wall may be used as a hinge to be tilted backward. Also in this case, as shown in FIG. 4B, the hinge portion can be folded and the upper portion can be fitted.

The semi-solid paper container according to the present invention whose content has been used up once or several times can be crushed to a small volume and then discarded as burning dust, which has the effect of reducing the environmental load. .

(Example) A semi-solid paper container according to the present invention was applied to yogurt to prepare a gable-top paper container having an internal capacity of 500 ml. As the laminated material of this paper container, the one having the following laminated structure manufactured by Weyerhaeuser Co., which has been used as a milk carton, was used as it is. That is, polyethylene 15 μm /
The bleached kraft paper is 450 μm / polyethylene 29 μm, and the total basis weight is 400 g / m ² . Four-color gravure printing was performed on the surface of the above-mentioned roll paper, and at the same time, a cross-section 8 between the tear piece H and the heat seal portion 5 was partially coated with a silicone anti-heat seal agent by a gravure printing method. In the next blank punching process, the weakened line 6 and the broken line 9 were formed at the same time as the other broken line processing. In order to provide the tear piece H near the top molding portion, the distance between the two weakening lines 6 is 8 mm, and the distance between the upper weakening line and the folding line 16 is 10 mm. A half cut line is provided. Further, the weakening line 6 and the grain direction were matched. The half cut is slightly deeper than the middle of the paperboard layer 21. After the blank 10 obtained by performing the above-mentioned processing is tube-bonded by the same tube-bonding machine as the conventional one,
A semi-solid paper container containing yogurt according to the present invention was obtained by molding, filling and sealing with a milk molding and filling machine in which only the filling portion was changed to yogurt. When this product was randomly extracted and subjected to the unsealing with the tear piece 6 and the resealing test using the broken line 9, both of them could be easily carried out. In the opened state, the yogurt could be easily taken out with a spoon or the like.

The semi-solid paper container according to the present invention is not limited to the above-mentioned embodiment, but various modifications can be made without departing from the gist of the present invention. For example, the shape of the paper container is not limited to the gable top carton, and may have a flat top portion. The paper is not limited to the craft type, and the plastic layers on both sides are not limited to polyethylene.

[0014]

EFFECTS OF THE INVENTION According to the present invention, even though it has substantially the same shape as a one-piece liquid paper container having a gable top, the body portion can be horizontally torn and opened to a large extent. It is easy to take out the contents with a spoon. Further, when the opposite side wall panels of the opened lower side of the opened paper container are pushed inward, the remaining side wall is also bent inward from the central folding line, and in this state, the upper end portion cut off at the time of opening can be covered as a lid.
In this way, it is not necessary to prepare a separate lid part, and the tear piece for opening is already incorporated at the stage of carton blank, no additional member is required, and the conventional liquid paper container is not used. Blank manufacturing method, molding, filling,
Since the sealing method can be used as it is, it can be provided at a low cost as compared with the two-piece container including the body, the lid, and the three-piece container including the body, the seal, and the lid that have been used so far. Further, since it is made of a material mainly composed of paperboard, it is easy to dispose of it after use, and it has an effect of reducing the environmental load.

[Brief description of drawings]

FIG. 1 is a blank development view of a semi-solid paper container according to the present invention.

FIG. 2 is an explanatory diagram of a weakened line.

FIG. 3 Explanatory drawing of opening and resealing

FIG. 4 is an explanatory diagram of opening and resealing.

FIG. 5 is a surface shape diagram of a tear piece.

[Explanation of symbols]

 1-4 Sidewall panel 5 Heat seal part 6 Weak line 7 Notch 8 One end of tear piece 8'The other end of tear piece 9 Fold line 10 Semi-solid paper container blank 11-17 Fold line 20 Laminate according to the present invention Material 21 Paperboard layer 22 Polyethylene layer 23 Printing layer 24 Half cut from the front surface 25 Half cut from the back surface A Top molding part B Bottom molding part H Tear pieces

Claims (4)

[Claims] 1. A semi-solid material characterized by comprising a tearing piece sandwiched between two weakening lines in a square columnar body, and the body is torn and opened from an end of the tearing piece. Paper container. 2. A fold line extending downward from a position lower than the weakening line is provided at a central portion of the side walls of at least a pair of opposing side walls of the body portion. The semi-solid paper container described. 3. The semi-solid paper container according to claim 1, wherein the weakening line is formed by half-cutting. 4. The anti-seal material is coated on one of the opposing heat-sealing surfaces at a portion where the tear piece intersects with the heat-sealing portion in the vertical direction of the body portion. The semi-solid paper container according to any one of claims 1 to 3.