JP2006206138A - Flexible film container with flange - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flexible film container with a flange comprising a rectangular or circular tube and a bottom, having flange plates projecting horizontally outward from the upper end face of the tube, and formed from a thin flexible film material by squeeze molding, wherein the flange plates are prevented from being deformed and warped even when the flange-having flexible film container is arranged on another flexible film container with a flange in a stack and the fused parts of the flange plates are stabilized with the proper shape retained. <P>SOLUTION: The flexible film container with a flange comprises the rectangular or circular tube 1 and the bottom 2. The flexible film container with a flange has the flange plates 3 horizontally projecting outward from the upper end face 1a of the tube 1. The container is formed by squeeze molding. In the container, the angle θ at which the tube 1 extends upward from the bottom 2 is set to 20° or less relative to a vertical face V. In addition, the edge 3a of each of the horizontally projecting flange plates 3 is made slightly lower than the upper end face 1a of the tube 1 so that a height difference Δh is made between the upper end face 1a of the tube 1 and each projecting edge 3a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a film container formed of a flexible film material having a rectangular or circular cylindrical surface portion and a bottom surface portion, and having a flange face plate extending outwardly from the upper end surface of the cylindrical surface portion in the horizontal direction. With flanges for packaging solids such as powders such as powder detergents, liquids and viscous materials such as inks, various parts such as precision machine parts and precision electronic parts, and work materials The present invention relates to a soft film container.

  As shown in the side sectional view of FIG. 5 (a), a conventional plastic container with a flange that is drawn by vacuum forming or pressure forming is provided with a rectangular or circular cylindrical surface portion 1 and a bottom surface portion 2. There is a flanged plastic container A, such as a tray-like container, which is provided with a flange face plate 3 projecting horizontally from the upper end surface 1a of the cylindrical surface portion 1 and is drawn using a hard film material or a soft film material.

  These plastic containers A with flanges such as tray-like containers are provided with a cylindrical surface portion 1 close to a vertical surface in which the rising angle θ from the bottom surface portion 2 of the cylindrical surface portion 1 is set to 20 ° or less with respect to the vertical surface. There is something.

  In particular, a flanged soft film container having a cylindrical surface portion close to a vertical surface drawn by using a thin soft film material having a thickness of 500 μm or less is formed by vacuum forming or pressure forming, and then used with a punching blade. In addition, an excess film portion is cut out and removed along the outer periphery of the flange face plate 3, but the individual flanged soft film containers after molding have a thickness of the flange face plate 3 of 150 to 300 μm. The thickness of the bottom plate 2 is about 50 to 300 [mu] m, and is considerably thin, soft, and easily deformed.

  To that end, when the flanged soft film container A after molding and manufacturing shown in FIG. 5 (a) is stacked and shipped in a stack of about 50 to 100 sheets as shown in FIG. 5 (b). Further, as shown in FIG. 5B, the flange face plate 3 made of a thin soft film which should be a flat surface of the overlapped flanged soft film container is easily deformed and warped, and the flange face plate 3 is deformed. As a result, the cylindrical surface portion 1 is bent into the inner surface of the container A and easily deforms, and the flanged soft film container A deformed by stacking as described above is difficult to restore to the original normal shape.

  After the contents are loaded into the flanged soft film container A, the flange face plate 3 of the container A is melted by combining the flange face plate portion of another plastic container, a container-like lid material, a film-like lid material, or the like. Even if it is intended to be sealed (heat-sealed) and sealed, the flange face plate 3 of the container A is deformed, so that its fusion position is not stable, and the occurrence of poor fusion occurs.

Below, the publicly known literature relevant to the technique of this invention is described.
Utility Model Registration No. 3102713

The present invention relates to a flanged soft film that is drawn by a soft film material having a flange face plate that is provided with a rectangular or circular cylindrical surface portion and a bottom surface portion, and that has a flange face plate extending outwardly from the upper end surface of the cylindrical surface portion in the horizontal direction. In the container, even when the flanged soft film containers after molding and manufacturing are overlapped and stacked every about 50 to 100 sheets, the cylindrical surface portion of the overlapped flanged soft film containers bends to the inner surface side and warpage occurs. The flange face plate, which should be flat, will not be deformed and warped, and the individual flanged soft film containers after stacking are held in a normal shape and the fusing position of the flange face plate is stable. Then, the contents are loaded into the flanged soft film container so that the fusion sealed package can be satisfactorily performed.

  The invention according to claim 1 of the present invention includes a rectangular or circular cylindrical surface portion 1 and a bottom surface portion 2, and includes a flange face plate 3 projecting horizontally outward from an upper end surface 1 a of the cylindrical surface portion 1. In the flanged soft film container formed by drawing with a soft film material, the rising angle θ from the bottom surface portion 2 of the cylindrical surface portion 1 is set to 20 ° or less with respect to the vertical surface V, and the upper end surface 1a of the cylindrical surface portion 1 is set. The height of the projecting front end portion 3a of the flange face plate 3 projecting in the horizontal direction with respect to the height of the flange surface plate 3 is slightly lowered, and a height difference Δh is formed between the upper end surface 1a of the cylindrical surface portion 1 and the projecting front end portion 3a. It is the soft film container with a flange characterized by providing.

  According to the second aspect of the present invention, in the flanged soft film container according to the first aspect, the flange width of the flange face plate 3 projecting outward from the upper end surface 1a of the cylindrical surface portion 1 in the horizontal direction is L. In this case, the flanged soft film container is characterized in that the relationship between at least the overhang width L and the height difference Δh is Δh ≧ 1 / L.

  According to a third aspect of the present invention, in the flanged soft film container according to the first or second aspect, the flange face plate 3 projecting outward from the upper end surface 1a of the cylindrical surface portion 1 in the horizontal direction is the projecting tip. It is a soft film container with a flange characterized by being comprised by the horizontal surface board part 3b and the downward facing board part c in order of the part 3a.

  According to a fourth aspect of the present invention, in the flanged soft film container according to the first or second aspect, the flange face plate 3 projecting outward from the upper end surface 1a of the cylindrical surface portion 1 in the horizontal direction is the projecting tip. A flanged soft film container comprising a horizontal plane plate portion 3b, a downward facing plate portion 3c, and a horizontal front end face plate portion 3d in this order in the direction of the portion 3a.

  The invention according to claim 5 of the present invention is the flanged soft film container according to claim 1 or 2, wherein the flange face plate 3 projecting outward from the upper end surface 1a of the cylindrical surface portion 1 in the horizontal direction is the projecting tip. It is the soft film container with a flange characterized by being comprised by the downward inclined surface board part 3e toward the direction of the part 3a.

  The invention according to claim 6 of the present invention is the flanged soft film container according to any one of claims 1 to 5, wherein the soft film material has a thickness of 500 μm or less. Soft film container.

  The invention according to claim 7 of the present invention is the flanged soft film container according to any one of claims 1 to 6, wherein the flange face plate 3 has a thickness of 150 to 300 μm. A soft film container.

  The invention according to claim 8 of the present invention is the flanged soft film container according to any one of claims 1 to 7, wherein the bottom surface portion 2 has a thickness of 50 to 300 μm. A soft film container.

  The invention according to claim 9 of the present invention is the flanged soft film container according to any one of claims 1 to 8, wherein the soft film material is a laminated film or a single film mainly composed of polyethylene. A flexible film container with a flange, characterized by being made of polyamide / polyethylene, polyamide / ethylene-vinyl alcohol copolymer / polyethylene, polyethylene / polyamide / polyethylene, polypropylene / polyamide / polyethylene, polypropylene / polyethylene, and polyethylene alone.

  The soft film container with a flange according to the present invention has a flange face plate that is slightly lowered in height from the protruding tip 3a of the flange face plate 3 that protrudes in the horizontal direction with respect to the height of the upper end face 1a of the cylindrical face portion 1. 3 is provided with a height difference Δh between the height of the upper end surface 1a of the cylindrical surface portion 1 and the height of the projecting tip portion 3a, and is projected outward from the upper end surface 1a of the cylindrical surface portion 1 in the horizontal direction. When the overhang width of the flange face plate 3 is L, at least the relationship between the overhang width L and the height difference Δh is Δh ≧ 1 / L.

  Therefore, when stacking, an external force (action) is applied to the flange face plate 3 in a direction that reduces or eliminates the height difference Δh between the height of the upper end surface 1a of the cylindrical surface portion 1 and the height of the protruding tip portion, for example. When applied, a drag (reaction) is applied along the outermost circumference of the flange face plate in a direction that does not further increase the outer peripheral length of the flange face plate. Since the flat surface tension due to the reaction is generated and the normal surface state of the flange face plate can be maintained, it is possible to prevent the flange face plate 3 and the cylindrical surface portion 1 from being deformed such as distortion, flexure and warp during stacking. In a state where the individual flanged soft film containers A after being stacked are held in a normal shape and position, the fusion position of the flange face plate 3 is stabilized. Can loading contents into flanged flexible film container, a good position of the flange surface plate 3 may be 閉封 packaged fused by superposing sheet-like cap material or other container to be welded.

  Further, the flanged soft film container of the present invention comprises the flange face plate by, for example, a horizontal surface portion and a downward tip portion in order in the direction of the flange tip end portion of the flange face plate, or the flange tip end portion of the flange face plate. In order, the height of the upper end surface of the cylindrical surface portion can be increased by grinding with a horizontal surface portion, a downward surface portion, and a horizontal tip portion, or by forming a slope surface portion that faces downward toward the protruding tip portion of the flange face plate. The height of the projecting tip of the flange face plate projecting in the horizontal direction with respect to the height is slightly lowered, and the height between the height of the upper end surface of the cylindrical surface portion of the flange face plate and the height of the projecting tip is low. The difference Δh is provided, and the length of the flange face plate that protrudes outward from the upper end surface of the cylindrical surface portion in the horizontal direction is L. Can, at least, the relationship between the height difference Delta] h, is obtained by a Δh ≧ 1 / L.

Therefore, when stacking, an external force (action) is applied to the flange face plate 3 in a direction that reduces or eliminates the height difference Δh between the height of the upper end surface 1a of the cylindrical surface portion 1 and the height of the protruding tip portion, for example. When this is done, the change in the boundary between the horizontal surface portion, the downward surface portion, and the horizontal tip portion along the outermost periphery of the flange face plate 3 or along the curved surface of the boundary between the horizontal surface portion and the downward tip portion. A drag (reaction) in a direction that does not further increase the outer peripheral length of the flange face plate 3 is applied along the curved surface or along the projecting tip of the downward slope face portion, and the entire surface of the flange face plate 3 is Since a planar tension is generated by the action and reaction that occur at the same time and the normal surface state of the flange face plate 3 can be maintained, the flange face plate 3 and the cylindrical surface portion 1 are distorted during stacking. The deformation of the flange face plate 3 can be avoided in a state where the individual flanged soft film containers A after being stacked are held in a normal shape and position. The contents can be loaded into the flanged soft film container, and the flange face plate 3 is placed in a good position on the sheet-like lid material and other containers to be welded and sealed and sealed. can do.

  An embodiment of a flanged soft film container according to the present invention will be described in detail below with reference to the drawings. The flanged soft film container according to the present invention has a rectangular shape as shown in a side sectional view of FIG. A cylindrical or circular cylindrical surface portion 1 and a bottom surface portion 2 are provided.

  Further, as shown in a side sectional view of FIG. 1A and a top view of FIG. 1B, a flange face plate 3 is provided on the outer side from the upper end face 1a of the cylindrical face portion 1 so as to protrude in the horizontal direction. The film is drawn by a vacuum forming method using pressure assist or a vacuum forming method using plunger assist using a thin soft film material.

  As shown in FIG. 1A, the flanged soft film container of the present invention formed by drawing with a soft film material has a rising angle θ from the bottom surface portion 2 of the cylindrical surface portion 1 to a vertical surface V. On the other hand, it is set to 20 ° or less.

  Then, the cylindrical surface portion 1 is formed so that the height of the protruding tip portion 3a of the flange face plate 3 protruding in the horizontal direction is slightly lower than the height of the upper end surface 1a of the cylindrical surface portion 1. A slight height difference Δh is provided between the upper end surface 1a and the overhanging tip 3a.

  The height difference Δh is, for example, at least when the protruding width of the flange face plate 3 protruding in the horizontal direction from the upper end surface 1a of the cylindrical surface portion 1 is L, the protruding difference L and the height difference Δh It is appropriate to set so that Δh ≧ 1 / L.

  Below, the overhanging width L of the flange face plate 3 of the flexible film container A with flange of the present invention, the height difference Δh between the upper end surface 1a of the cylindrical surface portion 1 and the overhanging tip portion 3a, and the container A when stacked Number of stackable sheets due to good (good… ○ slightly good… △ bad… ×) of the shape (the state in which the cylindrical surface portion 1 is not inserted and the flange face plate 3 is not warped up) and the good state in which the container A is not deformed Is shown in Table 1 below. In the table, A is a conventional container shown in FIG. 5 (a), B is the container of the present invention shown in FIGS. 1 (a) and 2 (a), and C is the present invention shown in FIG. 3 (a). The container.

本発明のフランジ付軟質フィルム容器Ａの全体形状は、その筒面部１が、図１（ｂ）に図示するような矩形状となるようなものであってもよいし、あるいは円形状や楕円形状となるようなものであってもよい。

The overall shape of the flanged soft film container A of the present invention may be such that the cylindrical surface portion 1 has a rectangular shape as shown in FIG. 1B, or a circular or elliptical shape. It may be such that

  The shape of the flange face plate 3 in the soft film container A with flange of the present invention is such that the height of the projecting tip portion 3a of the flange face plate 3 projecting in the horizontal direction with respect to the height of the upper end surface 1a of the cylindrical surface portion 1 is the same. For example, as shown in FIG. 1A, a flange face plate 3 that protrudes outward from the upper end face 1a of the cylindrical face portion 1 in the horizontal direction is formed on the tip end portion. In the direction of 3a, a horizontal plane plate portion 3b and an inclined downwardly facing surface plate portion c that is inclined substantially vertically downward or outward are formed.

In addition, as another shape of the flange face plate 3 in the flanged soft film container A of the present invention, the flange face plate 3 that protrudes in the horizontal direction with respect to the height of the upper end face 1a of the cylindrical surface portion 1 is similarly applied. The tip portion 3a is shaped to have a slightly lower height, and as shown in the side sectional view of FIG. 2 (a) and the top view of FIG. 2 (b), the upper end surface of the cylindrical surface portion 1 A flange face plate 3 projecting horizontally from 1a in the horizontal direction includes, in order in the direction of the projecting tip portion 3a, a horizontal plane plate portion 3b, a downwardly facing face plate portion 3c inclined substantially vertically downward or inclined outward, and a horizontal tip face plate. It is comprised by the part 3d.

  In addition, as another shape of the flange face plate 3 in the flanged soft film container A of the present invention, the flange face plate 3 that protrudes in the horizontal direction with respect to the height of the upper end face 1a of the cylindrical surface portion 1 is similarly applied. The tip portion 3a is shaped to have a slightly lower height, and as shown in the side sectional view of FIG. 3 (a) and the top view of FIG. 3 (b), the upper end surface of the cylindrical surface portion 1 The flange face plate 3 projecting outward from 1a in the horizontal direction is constituted by a downward slope face plate portion 3e that inclines downward toward the projecting tip portion 3a.

  As the soft film material used in the molding of the flanged soft film container A of the present invention, a thin flexible film material having a thickness of 500 μm or less is used. The thickness of the flange face plate 3 of the soft film container A is about 150 to 300 μm, and the thickness of the bottom portion 2 is about 50 to 300 μm.

  Examples of the flexible film material include a laminated film or a single film mainly composed of polyethylene, and are polyamide / polyethylene, polyamide / ethylene-vinyl alcohol copolymer / polyethylene, polyethylene / polyamide / polyethylene, polypropylene / polyamide / polyethylene. Film materials such as polypropylene / polyethylene and polyethylene alone can be used.

  As an application of the flanged soft film container A of the present invention, as shown in FIG. 4 (a), the container A main body is inexpensive for packaging contents such as solids, powders, liquids and viscous bodies. The container A can be used as it is, and the container A main body and the sheet-like lid C of the present invention are used. After the contents are filled in the container A of the present invention, the lid C It is possible to use as a container for hermetically wrapping by overlaying the cover material C on the upper surface of the flange face plate 3 and heat-sealing and heat-sealing.

  Also, for example, as shown in FIG. 4 (a), the outer surface of each of the cylindrical surface portion 1 and the bottom surface portion 2 of the flanged soft film container A is formed with a cylindrical surface portion 5 and a small hole portion 6a (content filling and injection On the inner surface of the cylindrical surface portion 5 and the bottom surface portion 6 of the flanged rigid plastic container B (plastic sheet having a thickness of 500 μm or more is formed by vacuum or pressure forming method) consisting of a bottom surface portion 6 provided with an outlet) and a flange face plate 7. After closely contacting and loading the horizontal surface plate 3b of the flange face plate 3 in close contact with the upper surface of the flange face plate 7, the horizontal surface plate 3b of the flange face plate 3 is heat-sealed to the flange face plate 7 by heat sealing. Accordingly, the outer surfaces of the cylindrical surface portion 1 and the bottom surface portion 2 of the flanged soft film container A of the present invention and the inner surfaces of the cylindrical surface portion 5 and the bottom surface portion 6 of the flanged rigid plastic container B are in a non-adhesive state. It may be separable seal resistant certain container.

  And from the small hole part 6a of the said container B between the cylindrical surface part 1 and bottom face part 2 of the container A, and the cylindrical surface part 5 and bottom face part 6 of the container B, contents, such as a drink and foodstuffs, and a chemical product For example, the container A is separated from the inner surface of the container B while filling the contents such as solid, powder, liquid (printing inks), and viscous material (printing inks). The container A and the container B are sealed by heat-sealing by attaching a spout such as a spout with a cap to the small hole 6a, or covering with a plastic cap or plastic film. The container can be filled and sealed with a volume of contents.

Moreover, for example, as shown in FIG. 4 (b), the outer surface of each of the cylindrical surface portion 1 and the bottom surface portion 2 of the container A produced by the combination of the container A of the present invention and the rigid plastic container B with flange, and the container A rigid plastic container D with a flange comprising a cylindrical surface portion 8, an upper surface portion 9 and a flange face plate 10 (thickness) is provided in a sealed container that can be separated from the inner surface of the cylindrical surface portion 5 and the bottom surface portion 6 of B. A plastic sheet having a thickness of 500 μm or more and a container having a volume similar to or smaller than that of the container B formed by vacuum or pressure forming is used to superimpose the flange face plate 10 on the upper face of the flange face plate 3 for heat sealing. By heating and fusing, the outer surface of each of the cylindrical surface portion 1 and the bottom surface portion 2 of the flanged soft film container A of the present invention and the cylindrical surface portion 5 of the rigid plastic container B with flange are provided. It can be the interior surface of the bottom portion 6 and the container that can sealability separated by unbonded to each other.

(A) is a sectional side view of one embodiment of the flexible film container A with flange of the present invention, and (b) is a top view thereof. (A) is the sectional side view of other embodiment of the soft film container A with a flange of this invention, (b) is the top view. (A) is a sectional side view of other embodiment of the soft film container A with a flange of this invention, (b) is the top view. (A)-(b) is a sectional side view explaining the example of a use of the soft film container A with a flange of this invention. (A) is a sectional side view of the conventional soft film container A with a flange, (b) is the schematic explaining the shape state at the time of stacking the container A.

Explanation of symbols

A ... Soft film container with flange B ... Hard plastic container with flange C ... Cover material D ... Hard plastic container with flange 1 ... Cylindrical surface part 2 ... Bottom part 3 ... Flange face plate 3a ... Flange face plate tip

Claims (9)

  A flanged soft material having a rectangular or circular cylindrical surface portion 1 and a bottom surface portion 2, and drawn by a soft film material provided with a flange face plate 3 projecting horizontally outward from an upper end surface 1 a of the cylindrical surface portion 1. In the film container, the rising angle θ from the bottom surface portion 2 of the cylindrical surface portion 1 is set to 20 ° or less with respect to the vertical surface V, and projects in the horizontal direction with respect to the height of the upper end surface 1a of the cylindrical surface portion 1. A flanged soft film characterized in that a height difference Δh is provided between the upper end surface 1a of the cylindrical surface portion 1 and the protruding tip portion 3a by slightly reducing the height of the protruding tip portion 3a of the flange face plate 3. container.   The flexible film container with a flange according to claim 1, wherein when the projecting width of the flange face plate 3 projecting horizontally from the upper end surface 1a of the cylindrical surface portion 1 is L, at least the projecting width L and the height difference. A flanged soft film container characterized in that the relationship with Δh is Δh ≧ 1 / L.   The flanged soft film container according to claim 1 or 2, wherein the flange face plate 3 projecting outward from the upper end surface 1a of the cylindrical surface portion 1 in the horizontal direction, in the direction of the projecting tip 3a, A flanged soft film container characterized by comprising a downward facing plate portion c.   The flanged soft film container according to claim 1 or 2, wherein the flange face plate 3 projecting outward from the upper end surface 1a of the cylindrical surface portion 1 in the horizontal direction, in the direction of the projecting tip 3a, A flanged soft film container characterized by comprising a downward face plate portion 3c and a horizontal tip face plate portion 3d.   3. The flanged soft film container according to claim 1, wherein the flange face plate 3 projecting horizontally outward from the upper end face 1 a of the cylindrical face portion 1 is downwardly inclined face plate portion 3 e toward the projecting tip portion 3 a. The soft film container with a flange characterized by being comprised by these.   The soft film container with a flange according to any one of claims 1 to 5, wherein the soft film material has a thickness of 500 µm or less.   The flanged soft film container according to any one of claims 1 to 6, wherein the flange face plate 3 has a thickness of 150 to 300 µm.   The flanged soft film container according to any one of claims 1 to 7, wherein the bottom surface portion 2 has a thickness of 50 to 300 µm.   The soft film material is a laminated film or a single film mainly composed of polyethylene, and is made of polyamide / polyethylene, polyamide / ethylene-vinyl alcohol copolymer / polyethylene, polyethylene / polyamide / polyethylene, polypropylene / polyamide / polyethylene, polypropylene / polyethylene. The flanged soft film container according to any one of claims 1 to 8, wherein the flexible film container is a polyethylene simple substance.

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