JP3220823U - Mounting structure of connecting member in flexible container inner bag - Google Patents

Abstract

[PROBLEMS] To provide a mounting structure of a connecting member in a flexible container inner bag capable of fixing the connecting member to the inner bag simply and reliably. An inner bag (1) housed in an outer bag of a flexible container, wherein the peripheries of adjacent resin sheets are joined and connected to each other by thermal welding (a) The base end 21 of the connecting member 2A with the outer bag, which is formed of a band-shaped resin sheet, is inserted between the two resin sheet end edges 141 and 142 that form the heat-welded area 14 extending in the direction 21 is heat-welded integrally to the two resin sheet edge portions 141 and 142 at these edge portions. [Selected figure] Figure 3

Description

  The present invention relates to a mounting structure of a connecting member for connecting an inner bag of a flexible container to an outer bag.

  For example, Patent Document 1 discloses a structure in which an inner bag is held in an outer bag of a flexible container (hereinafter simply referred to as a flexible container) to prevent its falling off. Here, an adhesive tape made of a film is attached to a required place on the outer surface of the inner bag to form an ear, and a structure in which the binding cord sewn to the inner surface of the outer bag is tied to the hole provided in the ear A structure has been proposed in which the filling port portion of the bag is twisted to form a knot, and this is tied with the above-mentioned binding string.

JP 2007-223661 A

  However, in the above-described conventional structure, there is a problem that the inner bag retention is inferior in reliability and the workability is also inferior, and in order to solve this problem, the inner bag also has a connecting member for securing connection with the outer bag. It is conceivable to provide.

  Therefore, in the present invention, in view of such a request, when providing the connecting member for connecting the inner bag with the outer bag, the connecting member in the flexible container inner bag can be simply and reliably fixed to the inner bag. The purpose is to provide a mounting structure.

  In order to achieve the above object, according to the first aspect of the present invention, the inner bag (1) housed in the outer bag of the flexible container, the peripheries of adjacent resin sheets are joined together by heat welding (a to d) A band-like shape is formed between two resin sheet end edges (141, 142) which form a heat-welded sheath (14) extending outward from the heat-welded portion at the periphery of the inner bag (1) connected. The proximal end (21) of the connecting member (2A to 2D) with the outer bag, which is made of a resin sheet, is inserted and the proximal end (21) is between the two resin sheet edge portions (141, 142) These end edges are heat welded (f) integrally.

  According to the first aspect of the present invention, the base end of the connecting member is inserted between the two resin sheet end edges forming the thermal welding area, and in this state, the base end of the connecting member and the resin sheet end edge are integrated. The base end of the connecting member is firmly fixed to the heat-sealed zone, since the tensile force applied to the connecting member in the longitudinal direction is sufficiently resistant to tensile force in the lateral direction as well as in the lateral direction. Ru. Further, since the connecting member is made of the same resin sheet as the resin sheet constituting the inner bag, the connecting member can be easily fixed to the heat-welding zone by heat-welding. Furthermore, since the connecting member is a resin sheet similar to the resin sheet constituting the inner bag, no foreign matter is generated when the inner bag is discarded and recovered, and smooth resource recovery is possible, and the raw material is established by the established recycling process. Can be easily reproduced.

  In the second aspect of the invention, the connecting members (2A to 2D) are formed of two strip-shaped resin sheets (22, 23).

  In the third aspect of the present invention, the connection members (2A to 2D) are configured such that the base ends (21) thereof thermally weld (e) the base ends of the two strip-shaped resin sheets (22, 23) .

  According to the third aspect of the present invention, it becomes easy to insert the proximal end of the connecting member between the resin sheet end edges of the heat-welded sheath

  In the fourth aspect of the present invention, the connecting members (2A to 2D) are configured by folding one sheet of resin strip (24) in a ring shape.

  In the fifth aspect of the invention, the connection members (2A to 2D) are heat-welded at both ends of the one strip-shaped resin sheet (24) to form the base end (21).

  According to the fifth aspect of the present invention, it becomes easy to insert the proximal end of the connecting member between the resin sheet end edges of the heat-welded sheath.

  In the sixth aspect of the invention, the connecting member (2A to 2D) is configured by further twisting the bent end (25).

  According to the sixth aspect of the invention, the strength of the distal end portion of the connecting member is improved.

  The reference numerals in the parentheses indicate the correspondence with the specific means described in the embodiments to be described later.

  As mentioned above, according to the attachment structure of the connection member in the flexible container inner bag of this invention, when providing a connection member, the said connection member can be fixed to an inner bag simply and reliably.

It is a whole side view of the inner bag which shows 1st Embodiment of this invention. It is an enlarged side view of the heat welding part of the inner bag main-body part before connection member attachment. It is an enlarged side view of the heat welding part of the inner bag main-body part after connection member attachment. It is a whole perspective view of a connection member. It is a whole perspective view of the connection member in 2nd Embodiment of this invention. It is a whole perspective view of the connection member in 3rd Embodiment of this invention.

  The embodiments described below are merely examples, and various design improvements made by those skilled in the art without departing from the scope of the present invention are also included in the scope of the present invention.

First Embodiment
FIG. 1 shows an example of an inner bag 1 of a flexible container provided with connecting members 2A to 2D attached by the attachment structure of the present invention. The inner bag 1 is a gusset bag made entirely of a resin sheet in the present embodiment, and the upper and lower end portions 11 and 12 are cut away so as to be squeezed. Then, at the squeezed upper and lower end portions 11 and 12, adjacent resin sheets are joined and connected to each other by heat welding (lines a, b, c, d), and each has a small diameter communicating with the in-cylinder space of the inner bag body portion 13 An inlet cylinder and an outlet cylinder are formed.

  The heat welding area 14 of a predetermined width extending outward is formed on the heat welded parts a to d of the resin sheets constituting the peripheral edge of the upper end 11 having the inlet cylinder and the lower end 12 having the outlet cylinder. Each heat-welded sheath 14 is provided with connecting members 2A to 2D for connecting with connecting cords and the like provided on the inner periphery of the outer bag (not shown) in a structure described in detail below. There is.

  The enlarged view of the heat welding part a is shown in FIG. The heat-welded zone 14 is constituted by end edge portions 141 and 142 of two resin sheets extending so as to open outward in a fixed width outward from the heat-welded portion a of adjacent resin sheets.

  The connecting member 2A is formed by molding a resin sheet similar to the resin sheet constituting the inner bag body portion 13 into a band shape of a fixed width, and the base end 21 of the two resin sheets (or both ends of one sheet) It is welded (symbol e). The connecting member 2A is inserted between the edge portions 141 and 142 of the two resin sheets constituting the heat-welded section 14 as shown by the arrows in FIG. 2 as shown by the arrows in FIG. As described above, the proximal end 21 of the inserted connection member 2A is heat-welded integrally with the edge portions 141 and 142 of the resin sheet (symbol f), and is fixed and attached to the heat-welding window 14. The length of the thermal welding f may be twice or more the width of the connecting member 2A. In addition, the attachment structure of other connection members 2B-2D is the same.

  FIG. 4 shows an overall view of the connecting member 2A. In FIG. 4, the connecting member 2A is formed by thermally welding (reference numeral e) two strip-shaped resin sheets 22 and 23 having a fixed width at each base end, and the tip portion is separated as it is. The heat-welded proximal end 21 is attached to the heat-welded sheath 14 in the above-described structure (see FIG. 3), and in this state, the tips 221 and 231 of the two resin sheets 22 and 23 of the connecting member 2A (Not shown) is connected by being connected to a connecting cord or the like provided on the inner periphery of the same.

  According to the mounting structure of the connecting member described above, the base end 21 of the connecting member 2A is inserted between the end edge portions 141 and 142 of the two resin sheets constituting the heat-welded section 14, and the base of the connecting member 2A is further provided. Since the end 21 and the end edge portions 141 and 142 of the resin sheet are heat-welded integrally (symbol f), tensile force in the longitudinal direction applied to the connecting member 2A is sufficient for tensile force in the lateral direction as well as in the lateral direction. The base end 21 is firmly fixed to the heat-welded sheath 14 with resistance. Further, since the connecting member 2A is made of the same resin sheet as the resin sheet constituting the inner bag main body portion 13, it can be easily fixed to the heat welding portion 14 by heat welding, and the inner bag can be discarded and recovered. At the same time, foreign substances are not generated, and smooth resource recovery is possible. In this case, the raw materials can be easily regenerated by the established recycling process.

Second Embodiment
FIG. 5 shows another example of the connecting member. In the present embodiment, the connecting member 2A is formed of a single strip-shaped resin sheet 24, and the resin sheet 24 is folded in a ring shape, and both ends thereof are heat-welded (symbol e) to form the base end 21. The same function and effect as the first embodiment can be obtained by such a structure.

Third Embodiment
When the resin sheet 24 of the connecting member 2A shown in FIG. 5 is folded back in a ring shape, it may be twisted as shown in FIG. 6 (X part in FIG. 6). By doing this, the strength of the tip portion (folded portion 25) of the connecting member 2A is improved.

(Other embodiments)
In each of the above-described embodiments, the proximal end 21 of the connecting member 2A is integrated by thermal welding (symbol e). Although this makes it easier to insert the base end 21 between the resin sheet edge portions 141 and 142 of the thermal welding window 14, it is not particularly necessary and may be omitted.

  Moreover, the shape of the inner bag shown in the first embodiment is merely an example, and it is apparent that the structure of the present invention can be applied to inner bags of other shapes.

  DESCRIPTION OF SYMBOLS 1 ... inner bag, 14 ... heat welding box, 141, 142 ... resin sheet end edge part, 2A, 2B, 2C, 2D ... determination member, 21 ... base end, 22, 23, 24 ... strip-shaped resin sheet, 25 ... Tip, a, b, c, d, e, f ... heat welding portion.

Claims (6)

An inner bag housed in an outer bag of a flexible container, wherein the peripheral edges of adjacent resin sheets are connected by heat welding to each other at the peripheral edge of the inner bag, and the heat welding region extends outward from the heat welding portion The base end of the connecting member with the outer bag, which is formed of a band-shaped resin sheet, is inserted between the two resin sheet end edges constituting the sheet, and the base end is between the two resin sheet end edges The attachment structure of the connection member in the flexible container inner bag thermally welded integrally to these end edges. The attachment structure of a connection member in a flexible container inner bag according to claim 1, wherein the connection member is formed of two strip-shaped resin sheets. The attachment structure of a connection member in a lexible container inner bag according to claim 2, wherein the connection member is configured such that a base end thereof is heat-welded to each of the base ends of the two strip-shaped resin sheets. The attachment structure of the connection member in the flexible container inner bag according to claim 1, wherein the connection member is configured by folding a single band-shaped resin sheet into a ring shape. The attachment structure of a connection member in a flexible container inner bag according to claim 4, wherein the connection member is formed by heat-welding both ends of the one strip-shaped resin sheet to form the base end. The attachment structure of the connection member in the flexible container inner bag according to claim 4 or 5, wherein the connection member is configured by further twisting the bent end.

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