JP2005112437A - Bundle of stacked soft packages - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bundle of stacked soft packages from which a desired number of the soft packages is easily taken out and the number of the packages is checked easily. <P>SOLUTION: The bundle 1 of the stacked soft packages has a stacked structure formed by stacking a plurality of the soft packages 2 each constituted by sealing a sheet-like matter with a packaging film and bundling them with a strip 3, wherein (a) the soft package 2 having a torsion angle of 1°-20° in absolute value and the soft package 2 having a torsion angle of 0° are stacked alternately, or (b) the soft package 2 having a torsion angle of 20° or less in absolute value in the positive direction and the packages 2 having a torsion angle of 20° or less in absolute value in the negative direction are stacked alternately. The neighboring soft packages 2 have a difference of 1° or more in torsion angle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a flexible packaged laminate bundle in which a plurality of sheet-like soft packages obtained by sealing sheet-like materials with a packaging film are stacked and bundled.

  For example, tape materials (medical tape (small piece sheet) products, etc.), beautified skin pack sheets, sheet-like hygiene products such as wet tissue, relatively small pieces of sheet materials such as membrane filters, For the purpose of preventing contamination and improving usability, the product form of a soft package product which is heat-sealed in a flat bag shape with a packaging film is increasing. Such a soft packaged product is usually formed as a soft packaged product bundle in which a plurality of sheets (for example, 10 sheets) are laminated and bundled with a belt-like material made of a belt-like film for the purpose of facilitating delivery and quantity confirmation. It is distributed, the strip is removed at the time of use, and a desired number of flexible packages are taken out and used. However, since each soft package is a sheet-like product heat-sealed with a packaging film, even if the strip-like product is removed from the laminated bundle of soft packages, the soft packages are in close contact with each other, and only the desired number It is not easy to take out the soft package. For this reason, the wrong number of sheets is often taken out, and such a difficulty in taking out and counting the flexible package has been an obstacle to taking out the necessary number and checking the stock. In particular, in the case where the sheet-like material is a tape material, the soft package is often used in the medical field, and particularly quick and reliable operation is required. Improvements in the difficulty of taking out and counting were desired.

As a technique for making it easy to take out sheet-like materials one by one from a laminate of sheet-like materials, when the sheet-like material is tissue paper, a method of laminating tissue papers by stacking folds one by one Has been put to practical use. As another technique, an opening for removing the unit adhesive tape is formed on one side surface of the holder body of the box-shaped container, and one end of the unit adhesive tape is placed in the holder body so that the uppermost unit adhesive tape is located in the opening. Contains a unitary adhesive tape formed by applying adhesive so that the part becomes the adhesive-unapplied surface, and an adhesive tape bundle formed by laminating the adhesive-unapplied surfaces alternately on opposite sides An adhesive tape with a holder having a configuration in which a pressing tool having a spring that presses the bottom side of the adhesive tape bundle in the opening direction is mounted in the holder is disclosed (see, for example, Patent Document 1). . Such a pressure-sensitive adhesive tape with a holder disclosed in Patent Document 1 makes it easy to take out only the uppermost one of the pressure-sensitive adhesive tape bundle by pressing the whole pressure-sensitive adhesive tape bundle in the opening direction with the pressing tool. However, in a soft package product in which a sheet-like material as described above is sealed with a packaging film, the soft package product can be easily taken out one by one from the state of the soft package product stack bundled and stacked. There has been little research on technology.
Japanese Utility Model Publication No. 5-65960

  The present invention has been made in view of the above circumstances, and a problem to be solved is to provide a flexible packaged bundle that allows easy extraction of a desired number of flexible packages and easy confirmation of the number of flexible packages. There is.

  As a result of diligent research to solve the above-mentioned problems, the present inventors have found that a soft package with a slightly twisted shape and a soft package with substantially no twist, or slightly twisted in opposite directions. By creating flexible packaged products and stacking them in a specific combination to form a bundle of flexible packaged products, the laminated structure of the flexible packaged product is like a leaf spring when the strip of the flexible packaged product bundle is removed. The present invention has been completed by finding that it is easy to take out a desired number of flexible packages and confirm the number of flexible packages as a result of expanding the gap between adjacent soft packages. It came to do.

That is, the present invention is as follows.
(1) A soft package laminate bundle obtained by laminating a plurality of soft package products obtained by sealing a sheet-like material with a packaging film and bundling with a belt-like product, and the laminate of the following (a) or (b) Flexible packaged laminated bundle having a structure.
(A) a laminated structure in which soft packaging products having an absolute value of twist angle of 1 ° to 20 ° and soft packaging products having a twist angle of 0 ° are alternately laminated;
(B) A soft package with a positive twist direction with an absolute value of 20 degrees or less and a soft package with a negative twist direction with an absolute value of 20 degrees or less alternately stacked. A laminated structure, wherein the difference in twist angle between each adjacent flexible package is 1 ° or more.
(2) The packaging film of each soft packaged product has a first bending stress maximum value of 0.01 N / 15 mm width / 2 sheets to 2.0 N / 15 mm width / 2 sheets, and a second bending stress maximum value. The soft-packaging laminate bundle according to (1), wherein is 80% or more of the maximum value of the first bending stress.
(3) The flexible packaged product bundle according to (1) or (2), wherein the outer peripheral shape (contour) of the soft package product is a square shape.
(4) The flexible packaged laminated bundle according to any one of (1) to (3), wherein the sheet-like material is a tape material.

  When the strip of the soft package laminate bundle is removed, the soft package laminate bundle of the present invention has a gap between the adjacent soft package products due to the repulsive force between the adjacent soft package products. It becomes easy to check the number of packaged products, and the operation of extracting the required number of soft packaged products becomes easy. Therefore, according to the present invention, it is possible to provide a very useful flexible packaged laminated bundle that can satisfy the requirements of the field where a quick and reliable operation is required.

Hereinafter, the present invention will be described in detail.
FIG. 1 is a diagram showing a simplified example of a flexible packaged laminated bundle 1 of the present invention. The soft-packaging product stack 1 of the present invention has a basic structure in which a plurality of soft-packaging products 2 formed by sealing sheet-like materials with a packaging film are laminated and bundled with a belt-like material 3. Here, “sealing a sheet-like material with a packaging film” means sealing and sealing the packaging film in a state where both front and back surfaces of the sheet-like material are covered with a packaging film. The term “a” refers to a state in which a plurality of flexible packages having substantially the same shape and size are stacked such that the thickness direction and the stacking direction of the flexible packages are substantially coincident. In the lamination of the soft packaged product, it is preferable that each soft packaged product has its ends aligned in the laminated state. In addition to the above basic structure, the soft-packaging laminate bundle 1 of the present invention (a) alternately stacks soft-packaging products with an absolute value of twist angle of 1 ° to 20 ° and soft-packaging products with a twist angle of 0 °. Or (b) a soft package with a positive twist direction with an absolute value of 20 ° or less and a soft package with a negative twist direction with an absolute value of 20 ° or less. It is characterized by having a laminated structure in which the layers are alternately laminated, and the difference in twist angle between adjacent soft packages is 1 ° or more. According to such a soft-packaging laminated bundle 1 of the present invention, when the strip 3 is removed, each soft-packaging product 2 acts like a leaf spring and pushes the gap between adjacent soft-packaging products 2. As a result, it is possible to easily take out a desired number of flexible packages and confirm the number of flexible packages.

  FIG. 2 is a diagram schematically showing a state in which a strip-like product of the flexible packaged product stack 1 using the soft package product 2 of the aspect (a) is removed. In the soft-packaging laminated bundle 1 having such an aspect, a soft-packaging product (hereinafter referred to as “soft-packaging product 2A” for convenience of explanation) having an absolute value of a twist angle of 1 ° to 20 ° (preferably 3 ° to 18 °). And a flexible packaged product having a twist angle of 0 ° (hereinafter, sometimes referred to as “soft-packaged product 2B” for convenience of explanation) are alternately laminated. In addition, a soft package product having an absolute value of the twist angle of 1 ° to 20 ° is a soft package product having a twist angle of + 1 ° to + 20 ° (a soft package product twisted in the positive direction), and a twist angle of −20 ° to Includes -1 ° soft packaging (soft packaging twisted in the opposite direction). The soft package 2A in such an embodiment may be a soft package that is twisted in the same direction, or a soft package that is twisted in the forward direction and a soft package that is twisted in the reverse direction are mixed. Also good. Moreover, if the absolute value of the twist angle is 1 ° to 20 °, the soft package 2A is a soft package with the same twist angle for each of the soft packages stacked alternately with the soft package 2B. It may be present, or two or more types of flexible packages having twist angles may be mixed. With regard to the flexible packaging product combined in the aspect of (a), if the absolute value of the twist angle of the flexible packaging product 2A is less than 1 °, each of the flexible packaging products 2B is alternately laminated with the flexible packaging product 2B having a twist angle of 0 °. The soft package does not act like a leaf spring, and the object of the present invention cannot be achieved. Also, if the absolute value of the twist angle of the soft package 2A exceeds 20 °, the appearance of one soft package will be noticeable as being twisted. In the process of sealing with a packaging machine, there is a problem that the stability of delivery and the accumulation property at the time of bundling are also deteriorated in the automatic packaging machine line after sealing and bundling.

  FIG. 3 is a diagram schematically showing a state in which a strip-like material is removed from a soft-packaging laminated bundle 1 ′ using the soft-packaging product of the aspect (b). In the soft package laminated bundle 1 ′ in the mode (b), the state of being bundled with a strip is the same as that shown in FIG. 1. In the soft-packaging laminated bundle of this aspect, the soft-wrapping product in which the twist direction has an absolute value of 20 ° or less and the twist direction is the positive direction (hereinafter sometimes referred to as “soft-packaging product 2C” for convenience of explanation). And a flexible packaged product in which the twist direction has an absolute value of 20 ° or less and the twist direction is negative (hereinafter sometimes referred to as “soft packaged product 2D” for convenience of explanation), It is important to laminate so that the difference in twist angle between each adjacent flexible package is 1 ° or more. Here, the “difference in twist angle” means the twist angle of a soft package product in which the twist direction is positive (that is, the twist angle is positive) and the twist direction in the negative direction (that is, the twist angle is negative). )) Of the flexible package product ([twist angle of the flexible package product in which the twist direction is positive] − [twist angle of the soft package product in which the twist direction is negative]).

  The flexible package 2C having a positive twist direction (that is, a positive twist angle) is a flexible package having the same twist angle for each of the flexible packages stacked alternately with the flexible package 2D. Alternatively, two or more kinds of soft packaging products having a twist angle may be mixed, and the soft packaging product 2D having a negative twist direction (that is, a negative twist angle) is a soft packaging product. About each soft packaging product laminated | stacked with the product 2C alternately, all may be a soft packaging product of the same twist angle, and the soft packaging product of 2 or more types of twist angles may be mixed. However, as described above, in this aspect, since it is necessary to set the difference in the twist angle between adjacent soft packages to 1 ° or more, it is possible to twist one or both of the soft packages 2C and 2D. When using the one whose absolute value is less than 1 °, use one having a twist angle such that the difference in twist angle between the adjacent soft package 2C and the soft package 2D is 1 ° or more. It is necessary to pay attention to this point.

  In the embodiment (b), when the difference in the twist angle between the adjacent soft package 2C and the soft package 2D is less than 1 ° (for example, the soft package 2C having a twist angle of + 0.5 ° When using a flexible package 2D having a twist angle of −0.3 °, the difference in twist angle is 0.8 °.), And there is little repulsion (plate spring action) between adjacent soft packages, The object of the present invention cannot be achieved. In addition, if the absolute value of the twist angle of the soft packaging products 2C and 2D exceeds 20 °, the appearance of one soft packaging product becomes conspicuous, giving an impression of poor appearance, In the process of sealing with an automatic packaging machine, there is a problem that the stability of delivery in the automatic packaging machine line after the sealing and the bundling of the automatic packaging machine and the accumulation property at the time of bundling also deteriorate. In this embodiment, the twist angle of the soft package 2C is preferably + 1 ° to + 20 °, more preferably + 3 ° to + 18 °, and the twist angle of the soft package 2D is preferably −20 ° to −1 °. Preferably, it is −18 ° to −3 °.

The twist angle of the flexible package according to the present invention is measured as follows.
FIG. 4 is a diagram schematically showing a method for measuring the twist angle of the soft packaged product in the present invention. First, the vertical column 12 is erected at the center P of the disk 11 in which lines are radially drawn from the center P (the interval between the lines is 1 ° and the scale of the reference line 11a is 0 °). The vertical column 12 is a quadrangular column, and one corner thereof is aligned with the center P of the disk 11, and one surface adjacent to the corner is on the same plane as the reference line 11a, and the direction is 180 ° from the center of the disk. Is installed. Further, a horizontal column 13 is attached to the vertical column 12. The horizontal column 13 and the vertical column 12 are quadrangular columns having the same cross-sectional area, and are installed so that one surface thereof is on the same plane as the reference line 11 a of the disk 11. The height of the horizontal column 13 has a structure that can be adjusted in accordance with the size of the flexible package to be measured. The horizontal column 13 and the reference line 11a on the disk 11 are adjusted and installed so as to be parallel.

  When the outer peripheral shape (contour) is a square shape, the flexible package product is measured by using it as it is, and when the outer shape is not a square shape, a piece cut into a square shape from the soft package product is used. Note that a square is a quadrangle with a right angle and includes a rectangle and a square, but in the case of a square, for convenience, one pair of opposite sides is a long side, and the other pair of opposite sides is a short side. Decide and handle. It should be noted that the rounded corners are also included in the “square shape” in the present invention.

  In a state where one short side of the rectangular soft package 14 is aligned with the surface of the disk 11, the end 5 mm width of one long side of the soft package 14 is attached to the vertical column 12. Further, the height of the horizontal column 13 is adjusted, and the upper end 5 mm width of the other short side of the soft package 14 is attached to the horizontal column 13. In this state, the twist angle is determined by reading the position of the apex 14a far from the center of the short side of the flexible package 14 in contact with the disk 11 from the top. If the angle formed between the straight line connecting the vertex 14a and the center P and the reference line 11a is a twist angle, and the vertex 14a comes to a position shifted in the clockwise direction from the reference line 11a, the twist direction is positive. The twist angle is read as a positive (+) value. Conversely, when the apex 14a comes to a position shifted counterclockwise from the reference line 11a, the twist direction is negative and the twist angle is read as a negative (+) value.

FIG. 5 is a diagram schematically showing the soft package used in the present invention. By the above method, the flexible package as shown in FIG. 5A is measured with a twist angle of 0 ° (that is, corresponding to the above-described flexible package 2B), and the flexible package as shown in FIG. 5B. Is measured with a twist angle in the positive direction (that is, corresponding to the above-described soft package 2C), and for a soft package as shown in FIG. 5C, it is measured with a twist angle in the negative direction (that is, , Corresponding to the above-mentioned soft package 2D). In addition, when the absolute value of the twist angle is 1 to 20 ° among the soft packaging products 2C and 2D, the soft packaging product 2A is used when used in the mode (a).
In addition, when the outer peripheral shape (contour) of the soft package is a square shape, the twist angle is the same by rotating the soft package 90 degrees about the axis in the thickness direction, and the twist direction is opposite ( (Negative direction) soft package product. For example, with respect to the flexible package 2C in which the twist direction shown in FIG. 5B is the positive direction, it is rotated 90 ° around the central axis Lz with respect to the thickness direction Z of the flexible package 2C (in this case, rotated 90 ° clockwise). ), The flexible package 2D has the same twist angle as that of the soft package 2C and is twisted in the negative direction. When a soft packaged product having an opposite twist direction is obtained by such a method, when printing is performed on the soft package product, an appearance in which the printing direction is rotated by 90 ° is obtained. If this is unacceptable as the appearance of the flexible packaged laminated bundle, it can be dealt with by preparing and using a packaging material having a printing pattern obtained by rotating the printing design by 90 ° in advance.

  There is no particular limitation on the number of soft packages to be laminated in the soft package laminate bundle of the present invention, but the ease of handling as a bundle, the ease of spreading due to the leaf spring effect when strips are taken, and the number of sheets can be easily counted. In view of the above, the number is preferably 3 to 20, more preferably 5 to 15. In addition, the flexible packaged product laminated bundle of the present invention has the flexible packaged product 2A, 2B or the flexible packaged product 2C, 2D laminated alternately as described above in any of the above-described embodiments (a) and (b). As long as the number is the same, the number may be the same (a soft package is placed at the end of each side), or one soft package may be more (one more soft). The package is placed on both ends).

The size of the sheet-like material (the content sealed with the packaging film in the soft package product) in the soft package laminate bundle of the present invention is not particularly limited. However, it is preferable that the size is suitable for handling as a sheet-like material, and if it is too thick, the thickness of the central portion will be sufficiently thick compared to the peripheral portion of the soft packaged product, so that it will become a bundle. In this case, there is a gap in the peripheral portion, so that the necessity of utilizing the effect of the present invention is reduced. Therefore, the size of the sheet-like material in the flexible packaged laminated bundle of the present invention is generally a size having an area of ²⁰ to 25000 mm ² , and preferably a size having an area of 100 to 15000 mm ² . The thickness of the sheet-like material is generally 0.01 mm to 4 mm, preferably 0.02 mm to 2 mm. In addition, as long as the sheet-like material is a sheet shape, there is no particular limitation on the outer peripheral shape (contour), and a square shape (square shape, rectangular shape), circular shape (perfect circle shape, elliptical shape), triangular shape, polygonal shape And various other shapes. In addition, the sheet-like material in the present invention may include a material that is difficult to accurately measure the thickness, such as a woven fabric and a non-woven fabric, as a constituent material thereof. In consideration of the handling property and the necessity of using the present invention, the weight per unit area of the sheet is generally 0.001 g / cm ^{2 to} 0.4 g / cm ² , preferably 0.002 g / cm ^{2 to} 0. 0.2 g / cm ² .

  There are no particular restrictions on what can be applied as a sheet-like material in the soft-packaging laminated bundle of the present invention, as long as it has been used in soft-packaging products conventionally. For example, the adhesive layer contains a drug. Tape preparation (patch), tape material for medical tape (small sheet) products such as adhesive tape for skin (mucosal membrane) protection, sheet-like hygiene products such as wet tissue and skin care pack sheets, membrane filters, etc. Can be mentioned. Among them, it is often used in a medical field, and since it is highly necessary to quickly and surely confirm the number of sheets and take out the required number of sheets, it is particularly preferable to use a tape material as a sheet-like material. .

When a tape material is used as the sheet-like material, the configuration is not particularly limited. For example, a three-layer configuration of a support, an adhesive layer, and a separator is common.
The material of the support is not particularly limited, but is preferably a material that does not hinder skin followability, that is, a material that easily stretches and contracts according to the elongation of the skin surface. Specifically, polyester, nylon, A single film made of one or more kinds of various plastic materials such as polyvinylidene chloride, polyethylene, polypropylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, polytetrafluoroethylene, and surrin, or a laminate thereof. Films or those obtained by laminating woven fabrics or nonwoven fabrics on these films can be used.

  The pressure-sensitive adhesive is not particularly limited as long as it is used as a medical pressure-sensitive adhesive, and a pressure-sensitive adhesive that does not cause rash on the skin surface when attached to the skin surface is preferable. For example, various pressure-sensitive adhesives such as acrylic pressure-sensitive adhesives, rubber-based pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, vinyl ether-based pressure-sensitive adhesives, and vinyl ester-based pressure-sensitive adhesives are used. In the case of a tape preparation, for example, a known drug having percutaneous absorption, which can be dissolved in the adhesive, is contained in the adhesive.

  The material of the separator is not particularly limited as long as it is used as a normal separator. Examples thereof include various plastic materials such as polyethylene, polypropylene, polyester, polyvinyl chloride, polyamide, ethylene-propylene copolymer, and polystyrene, and a plastic film obtained by blending one or more of these materials is used. Moreover, metal films, such as aluminum foil, can be used and you may use a laminated body with the said plastic film as needed. Furthermore, high-quality paper, glassine paper, parchment paper, or high-quality paper obtained by laminating polyethylene or the like on these release papers can also be used.

  As the packaging film in the flexible packaged laminated bundle of the present invention, a film having any of a non-stretched film, a uniaxially stretched film, and a biaxially stretched film as a base film is used. From the viewpoint of film strength, it is preferable to use a packaging film containing a biaxially stretched film as a base film. As a material for forming the base film, known resin materials can be used without any particular limitation. For example, polyethylene terephthalate, polyethylene naphthalate, polypropylene, polyvinyl alcohol, ethylene-vinyl alcohol copolymer, polyvinylidene chloride, polystyrene , Nylon, cellophane, polyethylene, ethylene-vinyl acetate copolymer, ionomer, polyvinyl chloride, polycarbonate, and the like. Ethylene-vinyl alcohol copolymer, polyvinylidene chloride, polystyrene, nylon, polyvinyl chloride, polycarbonate, polyethylene are preferred, and film strength Polyethylene terephthalate or polypropylene from the viewpoint of fine prices are particularly preferred.

In addition, when a biaxially stretched film manufactured by the T-die / tenter method is used as a base film among biaxially stretched films, a soft packaged product having a twist angle as described above can be easily obtained by utilizing a so-called bowing phenomenon. This is preferable.
That is, the biaxially stretched film of the T-die / tenter method has physical property anisotropy in the width direction of the film due to a so-called bowing phenomenon in the step of stretching in the width direction (lateral stretching) in the tenter. The bowing phenomenon is a phenomenon in which a straight line drawn in the width direction before entering the tenter is bent into an arc shape that protrudes in the direction opposite to the film traveling direction at the center of the film when it exits the tenter. . When a flexible packaging product is produced by sealing two packaging films using such a bowing film face to face, twisting occurs, but the occurrence of twisting is conventionally regarded as a poor appearance, Many studies have been made by film makers to suppress the occurrence of twisting as much as possible (see, for example, JP-A-7-80928). Since the inclination of the main axis of orientation differs in the width direction due to the bowing phenomenon, select how far the biaxially stretched film is obtained from the position in the width direction from the center part of the biaxially stretched film original fabric of the T-die / tenter method Thus, when a flexible packaging product is produced by sealing a sheet with a packaging film using a biaxially stretched film of the T-die / tenter method as a base film, the flexible packaging has various twist angles. Goods can be obtained. Specifically, if a packaging film produced using the central portion of the biaxially stretched film of the T-die / tenter method is used, a soft package with almost no twist can be obtained. If the packaging film produced using the part close | similar to the edge regarding the width direction of this biaxially stretched film original fabric is used, a flexible package product with a large twist can be obtained. Also, by obtaining a biaxially stretched film from a position that is about the same distance from the central portion of the biaxially stretched film of the T-die / tenter method, the absolute values of the twist angles are the same, and the directions opposite to each other. It is possible to obtain a flexible package that is twisted in the shape of a screw.

  Check the manufacturing information about the position in the width direction of the biaxially stretched film of the biaxially stretched film of the T-die / tenter method with the biaxially stretched film manufacturer and the packaging film manufacturer. It is possible to select the direction and angle of twist when a soft package is produced. Even if the position in the width direction of the biaxially stretched film of the T-die / tenter method is the same in the width direction of the biaxially stretched film, the amount of twist differs depending on the stiffness of the sealant to be bonded. Therefore, for each packaging film of each specification, information on the position in the width direction of the biaxially stretched film of the T-die / tenter method biaxially stretched film, and the twist direction and size of the soft packaged product of each specification By confirming the relationship in advance through experiments, a soft package product having a desired twist direction and angle can be obtained. As described above, when the biaxially stretched film of the T-die / tenter method is used for the base film of the packaging fill, there is an advantage that a flexible package product having a desired twist angle can be easily obtained.

  The packaging film in the present invention may be composed only of the base film as long as the base film itself can be sealed (heat sealed), and includes the base film as necessary. It may be composed of a plurality of films. In other words, in addition to the base film, it may have a sealant for sealing, or may be laminated with aluminum foil or paper, and the surface thereof is coated with polyvinylidene chloride or alumina. May be. Further, aluminum, aluminum oxide, or silicon oxide may be deposited. The first bending stress maximum value in the repeated bending stress test is 0.01 N / 15 mm width / 2 sheets to 2.0 N / 15 mm width / 2 sheets, and the second bending stress maximum value is 80% of the first bending stress maximum value. From the viewpoint of realizing a packaging film suitable for the present invention, which will be described later, and having a good heat-sealing property, a multilayer film essentially including a base film and a sealant. It is preferred to form the packaging film with a composite film of structure.

  The sealant is not particularly limited as long as it has a good heat sealing property and can impart an appropriate bending stress to the entire packaging film, such as polyacrylonitrile, polyethylene, cellophane, unstretched polypropylene, and amorphous copolyester. Can be used. In the case where a tape preparation containing a drug in the adhesive is used as a sheet, it is preferable to use polyacrylonitrile as a sealant for the purpose of reducing drug adsorption. When it has a sealant, the means for adhering the sealant and the substrate film may be one using an adhesive or utilizing heat fusion.

  A flexible package can be obtained by sealing a sheet-like material with such a packaging film. The sealing method is usually performed by heat sealing. However, if sealing can be performed in a state where the sheet-like material is covered with a packaging film, heat sealing is not necessary, for example, sealing with an adhesive is possible. Good. When heat treatment is required to promote twisting due to the bowing phenomenon, heat sealing is preferable because the sealing and the heat treatment can be performed simultaneously, but the sealing with the adhesive and the heat treatment can also be performed as separate steps. Any pattern may be used as long as the sheet-like material can be formed into a bag shape in the form of a known four-way seal, three-way seal, center seal or the like. The seal width can be arbitrarily selected in the range of 1 mm to 20 mm. The shape of the goblet of the seal can be arbitrarily selected from a flat shape, a wave shape, a mesh shape, an oblique mesh shape, a three-wire seal shape, and the like.

  As described above, by twisting the sheet-like material using the packaging film in which the base film is a biaxially stretched film of the T-die / tenter method, twisting of the flexible package due to the bowing phenomenon occurs, and in the present invention The flexible packaged products 2A, 2C and 2D can be easily obtained.

  Further, in the present invention, even when a biaxially stretched film is not used as a base film, when sealing a sheet-like material with a packaging film, the heat is made to give a twist to the packaging film. It is possible to obtain a flexible package product having a twist (twist angle) by adjusting the shape of the heat seal mold by also sandwiching with a seal mold and heat-sealing to obtain a flexible package product. Thus, an appropriate twist angle can be obtained. As such a heat seal mold, for example, as shown in FIG. 8, an upper mold 41 and a lower mold 42 in which a concave portion in which a sheet-like material covered with a packaging film is accommodated is formed at the center. Of the two opposing corners on each of the heat sealing surfaces 41A and 42A, one opposing corner (41a and 41b, 42c and 42d) protrudes the most, and the other opposing corner (41c and 41d). , 42a and 42b) are the most concave, and the shape between the adjacent corners is an inclined surface, so that both heat seal surfaces 41A and 42A fit perfectly (with no packaging film sandwiched) A die 50 which has been subjected to surface processing (to be in close contact) can be mentioned. By appropriately changing the position, size, etc. of the protruding portion (recessed portion) of the mold provided with a protruding portion (recessed portion) on the heat-sealing surface such as the mold 50, the soft seal molded by heat sealing with the mold. The direction and size of twist of the package can be changed.

  Since the soft package in the present invention is formed by sealing a sheet-like material with a packaging film, the shape thereof is a sheet. The outer peripheral shape (contour) of the flexible package is not particularly limited, and examples thereof include a square shape (square shape, rectangular shape), a circular shape (perfect circle shape, elliptical shape), a triangular shape, and a polygonal shape. It is preferable to use a rectangular soft package. In addition, if the outer peripheral shape (contour) is a square shape, if the outer peripheral shape (contour) is generally a square shape, the shape in which at least one of the four corners is rounded, the side is not a straight line, a wavy line shape, an uneven shape Also included are lines, zigzag lines (sawtooth), and curves. By using soft packaging products having a rectangular outer shape (contour), even when they are stacked and bundled, even if the twist angles of adjacent soft packaging products are different, they can be stored in a bundle. The direction of twisting between adjacent soft packaging products does not shift when transporting, and the leaf spring effect can be reliably exhibited when the band is removed. In particular, the leaf spring effect can be effectively expressed by the square corners, which is a preferable shape. Moreover, if the outer peripheral shape (contour) is a rectangular-shaped soft packaging product, and cuts out each side of the flexible packaging product so that it is parallel to the width direction and the longitudinal direction of the packaging film roll, The area of the portion to be cut off and discarded can be reduced, and the yield of the packaging film when sealing the sheet-like material is improved.

  The size of the flexible package is not particularly limited, but when the outer peripheral shape (contour) is a square shape, the length of each side is selected from 2.0 cm to 20 cm. Is preferred. If the length of either side is less than 2.0 cm, the gap between the soft packaging products adjacent to each other when the strip is removed becomes small, and the effect of ease of taking out and counting of the soft packaging products is small. In addition, if the length of any side is larger than 20 cm, the entire flexible package is bent, the twisted shape cannot be maintained, and the leaf spring when the strip is removed This is because the effect may not be sufficiently exhibited. In addition, the flexible package in the present invention preferably has a thickness of 0.004 cm to 0.5 cm in order to obtain an appropriate stiffness that is easy to handle and can exhibit the leaf spring effect. More preferably, it is 005 cm to 0.3 cm.

  In addition, the packaging film in the soft package laminate bundle of the present invention has a first bending stress maximum value of 0.01 N / 15 mm width / 2 sheets to 2.0 N / 15 mm width / 2 sheets in a repeated bending stress test (more suitable) Is 0.05 N / 15 mm width / 2 sheets to 1.5 N / 15 mm width / 2 sheets, and the second bending stress maximum value is 80% or more of the first bending stress maximum value (more preferably, 85 % Or more) is preferably used. When a packaging film having a first bending stress maximum value of less than 0.01 N / 15 mm width / 2 sheets is used, the leaf spring effect of the flexible package tends to be weak even if a twisted flexible package is produced. This is not preferable. In addition, if a packaging film having a maximum bending stress of 2.0N / 15mm width / 2 sheets at the first time is used, a strong force is required when stacking and wrapping twisted flexible packaging products. Since workability tends to deteriorate, it is not preferable. In addition, when a packaging film having a maximum second bending stress value smaller than 80% of the first bending stress maximum value is used, it is still stored in a laminated product bundle state even if a twisted flexible packaging product is produced. Since the twisted shape is deformed and fixed, it may not be possible to restore the twisted shape at the beginning of the production of the flexible package even if the strip is removed.

FIG. 6 is a diagram schematically showing a repeated bending stress test of the packaging film in the present invention. Specifically, this test is performed according to the following procedure.
As shown in FIG. 6, a metal block 23 is fixed on a stage 22 of a compressive stress measurement tester 21 (for example, SUN RHEO METER CR-150, CR-200D, SUN SCIENTIFIC CO., LTD). One metal block 24 is placed and the sample is sandwiched between the two metal blocks 23 and 24. A plate-shaped metal jig 25 (22 mm × 46 mm × 3 mm) is attached to the pressure detection part of the compressive stress testing machine 21 so that the side surface of the metal jig 25 and the side surfaces of the metal blocks 23 and 24 are parallel to each other, and the gap is accurately determined. The thickness is adjusted to +1.0 mm for two test packaging films.

Cut two pieces of packaging film of the unwrapped portion of the flexible package in 20 mm × 15 mm size to make the sample 26, and the inner surface of the sample 26 (the inner surface in the state of the soft package) face each other, two sheets Repeat. The two stacked samples 26 are sandwiched and fixed between the metal blocks 23 and 24 described above. At this time, half of the two-layer sample 26 is sandwiched between the metal blocks, and the 10-mm × 15-mm two-layer sample 26 comes out of the metal blocks 23 and 24.
In this state, the stage 22 is raised at a speed of 100 mm / min, the two-layered sample 26 is bent at the gap between the metal jig 25 and the metal blocks 23 and 24, and the maximum value of the bending stress at that time is measured. . Starting from a state where the lower end of the metal jig 25 is the reference position and the sample mounting position is 10 mm below the reference position, the stage is raised until the sample mounting position is 10 mm above the reference position. Measure the maximum bending stress.
Thereafter, the stage 22 is returned to the start position (the state where the sample mounting position is at the lower 10 mm position of the reference position), and the stage 22 is raised again until the sample mounting position reaches the upper 10 mm position of the reference position. Measure the maximum bending stress. Then, the ratio (%) of the second bending stress maximum value to the first bending stress maximum value is obtained.
Thus, the first bending stress maximum value of the packaging film and the ratio (%) of the second bending stress maximum value to the first bending stress maximum value can be measured.

  In the flexible packaged laminated bundle of the present invention, as a band for bundling a plurality of soft packaged products, those conventionally used as a band of a flexible packaged laminated bundle can be used without particular limitation, For example, long materials such as a biaxially stretched polypropylene film, a biaxially stretched polyester film, a biaxially stretched nylon film, and a polyethylene-coated kraft paper can be used. Among them, it is preferable to use a long biaxially stretched polypropylene film as the band because it is inexpensive, has sufficient strength as a band, and has good heat sealability and cutability. By winding such a band-like material around the laminated soft package and heat-sealing it, for example, the soft package laminate bundle of the present invention can be produced.

The laminated bundle of soft packaging products of the present invention is industrially produced by producing soft packaging products with different twist angles in each series of two automatic packaging machines, and joining them together to produce the soft packaging products produced in each series. It can be produced by alternately stacking packaged products and bundling them with strips. Alternatively, the twisting direction is the same in both of the two automatic packaging machines, and a substantially square flexible packaging product is produced, and one of the flexible packaging products is rotated by 90 ° and produced in the other series. It can also be produced by alternately laminating and bundling with soft packaging.
In addition, a single automatic packaging machine produces and stocks a soft package product with a certain twist angle, and then creates a soft package product with another twist angle and stocks it, and then two types of soft packages. It can also be produced by alternately stacking packaged products and bundling them with strips. Furthermore, a substantially square soft packaging product that is twisted at a twist angle of 1 ° to 20 ° is produced by a single automatic packaging machine, and this half is rotated by 90 ° to obtain a soft packaging product of reverse twist. It can also be produced by alternately laminating two types of flexible packaging products with two twist angles and bundling them with strips.

  FIG. 7 is a schematic view showing a state where the flexible packaged laminated bundles 1 and 1 ′ of the present invention are accommodated in the box body 6. The soft-packaging product stack 1, 1 'of the present invention is, for example, a box that is opened on the entire surface and has an opening for the purpose of keeping the spread of the soft-packaging products after the strip 3 is removed. You may accommodate in the box 6 which makes a side the upper side and has a space where the bottom part of the lower side on the opposite side has a narrower space than the side which has an opening. It is easier to take out each soft package 2 by setting up the stacks 1 and 1 'of the soft package with the strip 3 removed from the box 6, and confirming the number of soft packages It may be easy to do.

  EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples. However, the present invention is not limited to the following examples.

Example 1
60 parts by weight of JP lidocaine was blended in ethyl acetate with 40 parts by weight of an acrylic copolymer obtained by copolymerizing 5 parts by weight of acrylic acid and 95 parts by weight of 2-ethylhexyl acrylate in a nitrogen atmosphere. Then, this was coated on a 75 μm thick polyester separator so that the thickness after drying was 20 μm, dried to form an adhesive layer, and then this adhesive layer was bonded to a 12 μm thick polyester film and pasted. An agent was obtained. This was cut into a size of 3 cm × 5 cm to prepare a patch sheet.
Next, a “T die / tenter method biaxially stretched polyester film (12 μm thick) / adhesive layer / polyacrylonitrile film (20 μm thick)” packaging film, with the polyacrylonitrile film side facing inward, The product (3 cm × 5 cm size) was sandwiched and heat-sealed, and a four-sided heat-sealed packaged cross-sectional soft package product (5 cm × 7 cm size, seal width: 5 mm) was produced. At this time, the biaxially stretched polyester of the T die / tenter method biaxially stretched polyester film raw material (4.5m width) near the end on one side in the width direction (near 1.0m away from the end on the one side in the width direction) A packaging film produced using the film as a base film was used, and heat-sealed face-to-face as a backing material. At this time, the width direction and the longitudinal direction of the front and back packaging films were matched. As a result, a flexible package product having a twist angle of + 14 ° was obtained due to the bowing phenomenon of the T-die tenter method biaxially stretched polyester film.
Similarly, biaxial stretching of the T die / tenter method biaxially stretched polyester film raw material (4.5m width) nearer the other side in the width direction (around 1.3m away from the width direction other side) Using a packaging film produced using a polyester film as a base film, a flexible packaging product having a twist angle of −10 ° was obtained.
A flexible package with a twist angle of + 14 ° and a flexible package with a twist angle of -10 ° are alternately laminated to form a total of 10 pieces, and the length of the flexible package is 25 mm wide and 40 μm thick biaxially oriented polypropylene film. Around the central part of the side, it was heat-sealed and bound to obtain a flexible packaged laminated bundle.

Example 2
A biaxially stretched polyester film at the center in the width direction of the T-die / tenter biaxially stretched polyester film (4.5m width) (near 2.25m away from one end in the width direction and the other end). A flexible packaging product having a twist angle of 0 ° was produced in the same manner as in Example 1 except that the packaging film produced using the base film was used. The thus obtained soft package product with a twist angle of 0 ° and the soft package product with a twist angle of + 14 ° produced in Example 1 were alternately laminated to form a total of 10 sheets, with a total width of 25 mm and a thickness of 40 μm. An axially stretched polypropylene film was wound around the central part of the long side of the soft package, heat sealed and bound to obtain a soft package multilayer bundle.

Example 3
28.5 parts by weight of high molecular weight polyisobutylene (viscosity average molecular weight: 990,000), 43 parts by weight of low molecular weight polyisobutylene (viscosity average molecular weight: 60,000), 8.5 parts by weight of polybutene (viscosity average molecular weight: 1260), alicyclic A polyisobutylene-based pressure-sensitive adhesive solution is prepared by dissolving 20 parts by weight of a group petroleum resin (softening point: 100 ° C.) in hexane, and tulobuterol is added to this solution so that the content of tulobuterol in the pressure-sensitive adhesive layer is 10%. Were added, mixed and sufficiently stirred, and then applied and dried on a 75 μm thick polyester liner so that the thickness after drying was 20 μm to form an adhesive layer. Next, an adhesive layer was bonded to the polyester film side of the laminated support of polyester film (6 μm) / polyester nonwoven fabric (20 g / m ² ) to prepare a patch. This patch was punched into a size of 16 mm × 16 mm to prepare a sheet of patch.
Next, with the packaging film of “T-die / tenter biaxially stretched polyester film (12 μm thick) / printing layer / adhesive layer / polyacrylonitrile film (30 μm thick)”, A sheet-like product (16 mm × 16 mm) was sandwiched and heat-sealed, and a soft packaged product (47 mm × 47 mm size, seal width: 5 mm) having a square cross-section formed by four-side heat-sealing packaging was produced. At this time, the biaxially stretched polyester of the end portion on the one side in the width direction of the T-die / tenter biaxially stretched polyester film (4.5 m width) (near 1.5 m away from the end on the one side in the width direction) The packaging film produced using the film as a base film was heat-sealed face-to-face as a front material and a backing material. At this time, the width direction and the longitudinal direction of the front and back packaging films were matched. As a result, a flexible package product having a twist angle of + 5 ° was obtained due to the bowing phenomenon of the T-die tenter method biaxially stretched polyester film.
The thus obtained soft package product with a twist angle of + 5 ° and the soft package product with a twist angle of −5 ° by changing the direction of the soft package product with the twist angle of + 5 ° 90 ° around the central axis in the thickness direction. Laminate 5 sheets alternately to make a total of 10 sheets, roll around the center of the long side of the flexible package with a 25mm wide, 40μm thick biaxially stretched polypropylene film, heat seal and bind, Got.

Example 4
The patch prepared in the same manner as in Example 1 was punched into a size of 5 cm × 5 cm to prepare a sheet of the patch.
Next, with the packaging film of “biaxially stretched polyester film (12 μm thick) / polyethylene film (15 μm thick) / aluminum (7 μm thick) / adhesive layer / polyacrylonitrile film (20 μm thick)” Then, the prepared patch sheet (5 cm × 5 cm size) is sandwiched and heat-sealed, and a four-side heat-sealed soft package product (7 cm × 7 cm size, seal width 5 mm) is produced. did. At this time, the molds (upper mold and lower mold) are shown in FIG. 8 in which the abutting side including the heat seal surface is a square having a side of 7 cm, and one set of opposing surfaces on the heat seal surface. By using a mold that is processed and formed so that the height of the corner portion to be moved is 6 mm higher than the height of the other pair of opposing corner portions (that is, 70 sin 5 ° (mm)), the twist angle +10 A soft packaged product was obtained.
A soft package product with a twist angle of + 10 ° thus obtained and a soft package product with a twist angle of −10 ° by changing the direction of the soft package product with a twist angle of + 10 ° 90 ° around the central axis in the thickness direction. Laminate 5 sheets alternately to make a total of 10 sheets, roll around the center of the long side of the flexible package with a 25mm wide, 40μm thick biaxially stretched polypropylene film, heat seal and bind, Got.

Example 5
In 100 parts by weight of an acrylic copolymer obtained by copolymerizing 5 parts by weight of acrylic acid and 95 parts by weight of 2-ethylhexyl acrylate in a nitrogen atmosphere, 50 parts by weight of sorbitan trioleate, and three as a crosslinking agent. 0.15 parts by weight of functional isocyanate (manufactured by Nippon Polyurethane Co., Ltd., Coronate HL) is blended in ethyl acetate, and this is applied to a 75 μm thick polyester separator so that the thickness after drying is 60 μm and dried. Thus, an adhesive layer was formed. Next, an adhesive layer was bonded to the polyester nonwoven fabric side of the laminated support of polyester film (2 μm) / polyester nonwoven fabric (12 g / m ² ) to prepare a patch. This was cut into a size of 9 cm × 9 cm to prepare a patch sheet.
Next, with the packaging film of “biaxially oriented polypropylene film (60 μm thickness) / adhesive layer / unstretched polypropylene film (50 μm thickness)”, the non-stretched polypropylene film side faces inward, and the sheet of the patch prepared above (9 cm × 9 cm size) was sandwiched and heat-sealed, and a four-sided heat-sealed packaged soft package product (12 cm × 12 cm size, seal width: 5 mm) was produced. At this time, the molds (upper mold and lower mold) are shown in FIG. 8 in which the abutting side surfaces including the heat seal surface are squares each having a side of 12 cm, and one set of opposing surfaces on the heat seal surface. By using a mold that is processed and formed so that the height of the corner portion to be raised is 10 mm higher than the height of the other pair of opposing corner portions (that is, 120 sin 5 ° (mm)), the twist angle +10 A soft packaged product was obtained.
A soft package product with a twist angle of + 10 ° thus obtained and a soft package product with a twist angle of −10 ° by changing the direction of the soft package product with a twist angle of + 10 ° 90 ° around the central axis in the thickness direction. Laminate 5 sheets alternately to make a total of 10 sheets, roll around the center of the long side of the flexible package with a 25mm wide, 40μm thick biaxially stretched polypropylene film, heat seal and bind, Got.

Example 6
A flexible package laminate was produced in the same manner as in Example 4 except that a bilayer oriented polypropylene film monolayer film (40 μm thickness) was used as the packaging film.

Comparative Example 1
Ten soft-packaging products with a twist angle of 0 ° produced in Example 2 were laminated, and the biaxially stretched polypropylene film having a width of 25 mm and a thickness of 40 μm was wrapped around the central part of the long side of the soft-packaging product and heat-sealed to bind. Thus, a flexible packaged laminated bundle was obtained.

Comparative Example 2
Ten soft packaging products having a twist angle of + 14 ° produced in Example 1 were laminated, and the biaxially stretched polypropylene film having a width of 25 mm and a thickness of 40 μm was wrapped around the central portion of the long side of the flexible packaging product and heat-sealed to bind. Thus, a flexible packaged laminated bundle was obtained.

Comparative Example 3
The packaging film produced using the biaxially stretched polyester film of the biaxially stretched polyester film (4.5m width) in the center in the width direction (near 2.0m away from one end in the width direction) was used. Except for the above, a soft package with a twist angle of + 2 ° was produced in the same manner as in Example 1. The thus obtained flexible packaging product with a twist angle of + 2 ° and the flexible packaging product with a twist angle of + 14 ° produced in Example 1 were alternately laminated in a stack of 10 pieces, for a total of 10 pieces, 25 mm width and 40 μm thickness. An axially stretched polypropylene film was wound around the central part of the long side of the soft package, heat sealed and bound to obtain a soft package multilayer bundle.

Comparative Example 4
For packaging made by using a biaxially stretched polyester film of a biaxially stretched polyester film (4.5m width) near the end on one side in the width direction (near 0.3m away from one end in the width direction) A flexible package with a twist angle of 25 ° was produced in the same manner as in Example 1 except that the film was used. In addition, the biaxially stretched polyester film (4.5m width) was produced using the biaxially stretched polyester film of the end portion on the other side in the width direction (near 0.3m away from the other end in the width direction). A flexible package with a twist angle of −25 ° was produced in the same manner as in Example 1 except that the packaging film was used. The thus obtained flexible packaging product with a twist angle of + 25 ° and the flexible packaging product with a twist angle of −25 ° were alternately laminated in a total of 10 sheets to make a total of 10 biaxially oriented polypropylene films with a width of 25 mm and a thickness of 40 μm. The flexible packaged product was wound around the central part of the long side, heat-sealed and bound to obtain a flexible packaged product bundle.

For the flexible packaged product bundles obtained in each of the above examples and comparative examples, a repeated bending stress test of the packaging film was performed as described above with reference to FIG. The bending stress maximum value and the ratio (%) of the second bending stress maximum value to the first bending stress maximum value were measured.
Further, sensory evaluation was performed on the appearance, ease of bundling, ease of counting the number of sheets after removing the band, and ease of taking out the desired number of sheets.
The results are shown in Table 1.

It is a figure which simplifies and shows the flexible packaged goods laminated bundle 1 of a preferable example of this invention. Simplified stacking bundle of flexible packaging products (aspect (a)) in which soft packaging products having an absolute value of twist angle of 1 ° to 20 ° and soft packaging products having a twist angle of 0 ° are alternately laminated. FIG. Simplified stacking bundle of soft packaging products in a mode ((b) mode) in which soft packaging products having a twist angle of + 1 ° to + 20 ° and soft packaging products having a twist angle of −20 ° to −1 ° are alternately laminated. FIG. It is a figure which shows typically the method to measure the twist angle of the flexible package goods in this invention. It is a figure which shows typically about the soft package used for this invention. It is a figure which shows typically the repeated bending stress test of the film for packaging in this invention. It is a figure which simplifies and shows the place which accommodated the soft package laminated bundle 1, 1 'of this invention in the box body 6. FIG. It is a schematic perspective view of an example of the heat seal metal mold | die used in order to provide a twist to a flexible package in this invention, and the shaded part in a figure is a heat seal surface.

Explanation of symbols

1, 1 'Laminated bundle of soft packaging products 2, 2' Soft packaging product 3 Strips

Claims (4)

A soft-packaging product laminate bundle in which a plurality of soft-packaging products obtained by sealing a sheet-like material with a packaging film and bundled with a belt-like material, and has the following laminated structure (a) or (b) Flexible packaged laminated bundle.
(A) a laminated structure in which soft packaging products having an absolute value of twist angle of 1 ° to 20 ° and soft packaging products having a twist angle of 0 ° are alternately laminated;
(B) A soft package with a positive twist direction with an absolute value of 20 degrees or less and a soft package with a negative twist direction with an absolute value of 20 degrees or less alternately stacked. A laminated structure, wherein the difference in twist angle between each adjacent flexible package is 1 ° or more.   The packaging film of each soft packaged product has a first bending stress maximum value of 0.01 N / 15 mm width / 2 sheets to 2.0 N / 15 mm width / 2 sheets and a second bending stress maximum value of the first time. The laminated bundle of flexible packages according to claim 1, which is 80% or more of the maximum bending stress.   The soft-packaging product laminated bundle according to claim 1 or 2, wherein the outer peripheral shape (contour) of the soft-packaging product is a square shape.   The flexible packaged laminated bundle according to any one of claims 1 to 3, wherein the sheet-like material is a tape material.

Images