JP6220174B2 - How to remove the release material from the bag - Google Patents

Description

The present invention relates to a method for removing a release material from a bag, which can be stored by storing a stored item, then folding the sealing portion inward and bonding the sealing portion and the other opening side end portion with an adhesive layer. About.

  In the bag body, an opening is formed at one end (upper end) in the longitudinal direction of a bag body having a front side portion and a rear side portion located facing each other, and the opening side end of the rear side portion is more than the opening side end of the front side portion. A sealing part is formed by being extended, and the sealing part is provided with a pressure-sensitive adhesive layer that bonds the sealing part and the opening side end part of the front side part by folding the sealing part so as to overlap the opening side end part of the front side part. A release material for covering the pressure-sensitive adhesive layer is provided. The pressure-sensitive adhesive layer is provided so as to cover substantially the entire width direction of the opening-side end portion of the sealing portion, and the release material that covers the pressure-sensitive adhesive layer is also the width of the opening-side end portion of the sealing portion in the same manner as the pressure-sensitive adhesive layer. It has a length over almost the entire direction.

  When packaging a product as a stored item in a bag body configured in this way, the product is first stored in the bag body through the opening. After the storage, the release material is peeled off, and then the sealing portion is bent so as to overlap the other opening side end portion. Thereby, a sealing part and the opening side edge part of a front side part can be adhere | attached and sealed with an adhesive layer.

  The release material is set to a size that can cover the pressure-sensitive adhesive layer, that is, a size having an area slightly larger than the surface area of the pressure-sensitive adhesive layer (see, for example, Patent Document 1).

JP 2004-34990 A (see, for example, FIG. 21)

  When the release material is peeled off after putting the product into the bag body of Patent Document 1, the release material has a size slightly larger than the surface area of the pressure-sensitive adhesive layer, so that it is difficult to grasp the end of the release material. Then, after grasping the end of the release material, as shown in FIG. 9, the bag body so that the strip-like release material 101 long in the width direction of the bag body 100 is pulled away in the direction perpendicular to the surface of the adhesive layer 102. The release material 101 is peeled off from the surface of the pressure-sensitive adhesive layer 102 by pulling in the 100 width direction (arrow direction A). Thus, peeling the release material 101 that is long in the width direction while pulling in the width direction has a disadvantage that it is a very troublesome and troublesome work, and there is room for improvement.

The present invention is in view of the circumstances described above, it is an attempt to solve provides a release material leaving the method of the bag that can be collectively disposed a large number of release material.

Release material leaving the method of the bag of the present invention, for the above-mentioned problem solution, an opening is formed in one longitudinal end portion of the bag body having a front portion and a back side positioned facing each other, the front portion And one opening side end of the rear side portion is extended from the other opening side end to form a sealing portion at one opening side end, and the sealing portion overlaps the other opening side end portion. A pressure-sensitive adhesive layer that adheres the sealing portion and the other opening side end by bending to the sealing portion or the other opening side end, and a release material for covering the pressure-sensitive adhesive layer , before KiHanare type material includes a body portion which is releasably secured to the adhesive layer, and a tensile portion which is folded back free end of the sealing portion at one end of the body portion along the longitudinal direction of the bag body, The free end of the pulling portion protrudes outward in the longitudinal direction of the bag body from the free end of the sealing portion. A method of removing a release material of a body, wherein a support body for supporting a tensile portion of the release material is provided, and a plurality of bag body tension portions are supported on the support body, and a bag body of the supported bag body is provided. By pulling, the bag body is separated from the supported release material .

According to such a configuration, the pulling portion of the release material protruding outward in the longitudinal direction of the bag body is supported by the support body, and the bag body of the supported bag body is pulled to thereby remove the supported release material. The bag body can be detached. Thereby, the release material can be left on the support. Thus, there is an advantage that a large number of unnecessary release materials remaining on the support can be disposed of in a lump.

According to the present invention, the release member protruding from the longitudinal direction of the bag body is supported on the support body, and the bag body of the supported bag body is pulled, so that a large number of release materials are collected at once. Thus, it is possible to provide a useful method for removing the release material from the bag that can be disposed of.

It is a perspective view of a bag. It is a perspective view which shows the state just before attaching a mold release material. The process of closing and sealing the opening of the bag body is shown, (a) shows the state before peeling the release material, (b) shows the state where the release material has been peeled off, and (c) shows the sealing part and the front side part. The opening side edge part of this is adhere | attached and sealed with the adhesive layer. The process of peeling the release material is shown, (a) shows the state immediately before peeling the release material, (b) shows the state where the release material has begun to peel, and (c) shows the state where more than half of the release material has been peeled off. ing. (A) is a cross-sectional view of the bag body before sealing, (b) is a cross-sectional view of the bag body in a state where the sealing portion is folded inward and the sealing portion and the other opening side end portion are bonded and sealed. It is. (A) is sectional drawing which shows the state which penetrated and supported the tension | pulling part of many bag bodies to the support body, (b) is sectional drawing which shows the state which removed the bag main body and only the tension | pulling part remained in the support body. (A) is a cross-sectional view of another form of bag body provided with a release material at the other opening side end, (b) is another form of release in which the main body part and the tension part are set to have substantially the same length. It is sectional drawing which shows a mold material. It is sectional drawing of the bag body of another form provided with the mold release material in the sealing part extended from the header part. It is a perspective view of the principal part which shows the state which has peeled off the conventional release material.

  Hereinafter, the bag of the present invention will be described based on the drawings.

  FIG. 1 and FIG. 2 show a bag body 1 that can store and package products. The bag body 1 includes a bag body 2 made of a transparent synthetic resin film (for example, stretched polypropylene film), an adhesive layer 3 provided in the bag body 2, and a release material 4 for covering the surface of the adhesive layer 3. And.

  The bag body 2 has a rectangular front side portion 5 located opposite to the front side portion 5 and a long rectangular rear side portion 6 which is also long, and an opening 7 is formed on one end side in the longitudinal direction of the two side portions 5 and 6. Is formed. And the opening side end of the rear side part 6 is extended rather than the opening side end of the front side part 5, and the horizontally long rectangular-shaped sealing part 8 is formed in the opening side end of the rear side part 6. FIG. Specifically, a single synthetic resin film is folded so that the free end of the rear side portion 6 extends with respect to the free end of the front side portion 5, and the left and right sides of the folded side portions 5 and 6 are left and right. The bag body 2 having the opening 7 on one end side is formed by heat-welding both lateral sides. Here, a vertically long bag 1 is described as an example, but a horizontally long bag or a square bag 1 having the same vertical and horizontal dimensions may be used.

  The pressure-sensitive adhesive layer 3 is composed of a belt-like layer having a predetermined area having a length extending across the width on the surface of the portion close to the end opposite to the opening side end of the sealing portion 8. The pressure-sensitive adhesive layer 3 is specifically composed of a hot-melt pressure-sensitive adhesive, a cold-melt pressure-sensitive adhesive, or a direct-paste glue. Alternatively, the pressure-sensitive adhesive layer 3 may be composed of a pressure-sensitive adhesive layer on the surface side of the double-sided tape by attaching a double-sided tape to the sealing portion 8. The sealing portion 8 and the opening side end portion 5A of the front side portion 5 can be bonded to each other by the pressure-sensitive adhesive layer 3 by bending the sealing portion 8 configured in this manner so as to overlap the opening side end portion 5A of the front side portion 5. it can.

  The release material 4 includes a high-density polyethylene (HDPE) having a thickness of 25 μm, a biaxially stretched polypropylene (OPP) film having a thickness of 25 μm, and a film obtained by vapor-depositing aluminum on the surface of a biaxially stretched polypropylene (OPP) film. 20 μm). It is preferable to provide a silicone layer on the surface of the release material 4 that is in contact with the pressure-sensitive adhesive layer 3 so that the pressure-sensitive adhesive of the pressure-sensitive adhesive layer 3 is difficult to stick. As the release material 4, a synthetic resin film other than the above-described synthetic resin film may be used. The thickness of the synthetic resin film may be set to any thickness.

  Further, the release material 4 includes a horizontally long and rectangular main body portion 4A fixed to the surface of the pressure-sensitive adhesive layer 3 and an end of the main body portion 4A along the longitudinal direction of the bag main body 2 and free play of the sealing portion 8. And a tension portion 4B that is folded back to the end side.

  The free end 4b of the pulling portion 4B protrudes outward in the longitudinal direction of the bag main body 2 from the end on the same side of the main body 4A corresponding thereto. The protruding length of the pulling portion 4B in the longitudinal direction of the bag body 2 is approximately three times the length of the main body portion 4A, but is not limited thereto. In this way, if the free end 4b of the pulling portion 4B protrudes from the same side end (free end) of the main body portion 4A to the outside in the longitudinal direction of the bag body 2, the free end 4b of the pulling portion 4B can be easily grasped and separated. The operation of peeling the mold material 4 can be performed more quickly.

  Further, the free end 4 b of the pulling portion 4 B protrudes from the free end 8 A of the sealing portion 8 to the outside in the longitudinal direction of the bag body 2. In this way, if the free end of the pulling portion 4B protrudes from the free end 8A of the sealing portion 8 to the outside in the longitudinal direction of the bag body, it is positioned further to the inside of the bag body 2 than the free end 8A of the sealing portion 8 in the longitudinal direction. Compared with the structure which is carrying out, the free end 4b of the tension | pulling part 4B can be grasped reliably and rapidly.

  Both ends in the left-right width direction of the main body portion 4A and both ends in the left-right width direction of the pulling portion 4B corresponding thereto are thermally welded. In FIG. 2, the heat-welded portions 4L and 4R are indicated by crosses. Thus, if the main body part 4A and the tension part 4B are integrated at both ends in the left-right width direction, the tensile part 4B is unexpectedly attached to the main body part 4A when the main body part 4A is bonded to the adhesive layer 3. The main body 4A can be quickly positioned on the adhesive layer 3 without moving.

  The process of putting the product in the bag body 1 thus configured and sealing it will be described. As shown in FIG. 3 (a), the bag body 1 is prepared, and in this state the product (not shown) is placed. Then, the release material 4 is peeled off as shown in FIG. 3B by grasping the pulling portion 4B of the release material 4 and pulling it in the direction of the arrow (upward in the figure). In this state, the sealing portion 8 and the opening side end portion 5A of the front side portion 5 are adhered and sealed with the adhesive layer 3 by bending the sealing portion 8 so as to overlap the opening side end portion 5A of the front side portion 5. .

  A detailed description will be given of grasping the peeling portion 4B of the release material 4 and peeling it from the pressure-sensitive adhesive layer 3. In the state shown in FIG. 4A (the state in which the above-described product is put), the direction in which the free end 4b of the pulling portion 4B of the release material 4 is gripped and separated from the bag body 2, that is, the arrow direction (upward in the figure) Pull to. By pulling in this way, the pulling force is converted in a direction perpendicular to the surface of the pressure-sensitive adhesive layer 3 so that the main body portion 4A can be lifted from the pressure-sensitive adhesive layer 3 and easily peeled off (FIG. 4 (b) and (c)). At this time, the conventional release material 101 of FIG. 8 can be peeled off with a pulling force equivalent to that of peeling off in the width direction of the bag body 100. Incidentally, when the release material 4 is pulled in a direction parallel to the surface of the pressure-sensitive adhesive layer 3, the adhesive force is strong, and when the release material 4 is pulled in a direction orthogonal to the surface of the pressure-sensitive adhesive layer 3. Adhesive strength is weak. Then, by pulling the release material 4 long in the width direction of the bag body in the longitudinal direction of the bag body 2, that is, in the short side direction instead of the long side direction, the peeling time is reduced as much as possible. be able to.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  In the embodiment, as a sealing method for sealing the bag body 1, the release material 4 is peeled off, and then the sealing portion 8 of the bag body 2 is folded and sealed so as to overlap the opening side end portion 5 </ b> A of the front side portion 5. However, from the state shown in FIG. 5A, the sealing portion 8 of the bag 1 is folded so as to overlap the opening side end portion 5A of the front side portion 5 as indicated by the arrow, and the sealing portion 8 is thus folded to the front side portion 5. 5A (see FIG. 5B), and pulling the protruding portion 4B in that state in the direction of the arrow in FIG. 5B, peels the release material 4 from the sealing portion 8. Thus, a sealing method may be used in which the sealing portion 8 is adhered and sealed to the opening-side end portion 5A of the front side portion 5 with the pressure-sensitive adhesive layer 3. If comprised in this way, the sealing part 8 can be bent so that it may overlap with the opening side edge part 5A of the front side part 5, and the sealing part 8 can be aligned with the opening side edge part 5A of the front side part 5. Thereafter, the sealing portion 8 is bonded to the opening side end portion 5 </ b> A of the front side portion 5 by pulling the protruding pulling portion 4 </ b> B and peeling the release material 4 from the sealing portion 8. Thereby, it can be avoided that the sealing portion 8 and the opening side end portion 5A of the front side portion 5 are bonded together in a state where the bonding position is shifted.

  Moreover, in the said embodiment, although the mold release material removal method which detaches the mold release material 4 of the one bag body 1 was shown, as shown to Fig.6 (a), the tension | pulling part of the mold release material 4 with which the bag body 1 is equipped. A support body 9 that penetrates and supports 4B is provided, and the support body 9 allows the pulling portions 4B of the plurality of bag bodies 1 to penetrate and support the bag body 2 of the bag body 1 that is supported by penetration (the left side in the figure). Alternatively, a release material releasing method may be used in which the bag body 2 is released from the release material 4 that is supported by penetration. The support body 9 is composed of a rod-shaped portion 9A penetrating the tension portion 4B and a disk-shaped base portion 9B integrated with the lower end of the rod-shaped portion 9A, but is not limited thereto. Further, when the pulling portion 4B is penetrated from the tip (upper end) of the rod-shaped portion 9A, a through-hole through which the tip (upper end) of the rod-shaped portion 9A can pass is formed in the pulling portion 4B in advance, or the rod-shaped portion 9A You may make it penetrate by making the front-end | tip (upper end) the pointed taper shape and piercing the tension | pulling part 4B. In this way, the pulling portion 4B of the release material 4 protruding outward in the longitudinal direction of the bag body 2 is supported by the support body 9, and the bag body 2 of the bag body 1 supported by the penetration is pulled, thereby penetrating. The bag body 2 can be detached from the release material 4 that is supported. Thereby, the release material 4 can be left on the support 9. Thus, by leaving many release materials 4 on a support body, there exists an advantage which can dispose of many unnecessary release materials 4 collectively. 6A and 6B, the support body 9 that penetrates and supports the tensile portion 4B of the release material 4 is used. However, from the clip that holds the tensile portion 4B of the release material 4 and the hook portion that is held by locking. It can also be implemented with a support.

  Moreover, in the said embodiment, although the adhesive layer 3 was provided in the sealing part 8, as shown to Fig.7 (a), the adhesive layer 3 is provided in the opening side edge part 5A of the front side part 5, and this opening side is provided. You may provide the mold release material 4 which covers the adhesive layer 3 with which the edge part 5A was equipped. In this case, the free end 4b of the release material 4 does not protrude outward from the free end 8A of the sealing portion 8, but protrudes from the opening end 5a of the opening side end portion 5A to the free end 8A side of the sealing portion 8. Thus, it is possible to avoid the difficulty of grasping the free end 4b of the release material 4.

  Moreover, in the said embodiment, although the free end 4b of the tension | pulling part 4B protrudes in the longitudinal direction outer side of the bag main body 2 from the edge | side of the same side of the main-body part 4A corresponding to this, as shown in FIG.7 (b). In addition, the free end 4b of the pulling portion 4B may be configured not to protrude outward in the longitudinal direction of the bag body 2 from the corresponding end (free end) 4a of the main body portion 4A. That is, the length of the pulling portion 4B in the longitudinal direction of the bag main body 2 and the length of the main body portion 4A in the longitudinal direction of the bag main body 2 may be set to the same length or shorter than the main body portion 4A.

  Further, in the above-described embodiment, the case where both the left and right width direction ends of the main body portion 4A and the corresponding left and right width direction ends of the pulling portion 4B are thermally welded is shown. May be. For example, FIG. 7B shows a state where they are not integrated.

  Moreover, you may comprise the bag body 1 shown by the said embodiment in the bag body 1 shown in FIG. As shown in FIG. 8, an opening 7 is formed on one end side in the longitudinal direction of the bag body 2 having the front side portion 5 and the rear side portion 6 positioned facing each other, and one of the front side portion 5 and the rear side portion 6. A header portion 10 is formed by extending the opening side end of the first opening portion from the other opening side end, and a sealing portion 8 for closing the opening 7 is formed by overlapping the front side portion 5 on the opening side end of the header portion 10. Then, the pressure-sensitive adhesive layer 3 is provided on the surface 8 </ b> A on the front side portion 5 side of the sealing portion 8, and the release material 4 for covering the pressure-sensitive adhesive layer 3 is provided. The release material 4 includes a main body portion 4A that is detachably fixed to the adhesive layer 3, and a tension portion 4B that is folded back from the header portion 10 side end of the main body portion 4A and exposed to the outside from the sealing portion 8. Yes. Therefore, after pulling the pulling portion 4B in the direction of the arrow in the figure, the release material 4 is peeled off, and then the sealing portion 8 is overlapped with the front side portion 5 to fix the sealing portion 8 to the front side portion 5 and seal. The header portion 10 is provided with a sealing portion 10A by folding the rear side portion 6 and thermally welding the opening 7 side end. Further, the strength of the header portion 10 may be increased by inserting a reinforcing plate in the space closed by the sealing portion 10A. Moreover, since the state when peeling the release material 4 is the same as that shown in FIGS. 4A, 4B, and 4C, the description thereof is omitted.

  Further, the release material 4 shown in the above embodiment can be peeled off using a machine in addition to being peeled off artificially.

  DESCRIPTION OF SYMBOLS 1 ... Bag body, 2 ... Bag main body, 3 ... Adhesive layer, 4 ... Release material, 4A ... Main body part, 5 ... Front side part, 5A ... Opening side edge part, 5a ... Opening edge part, 6 ... Rear side part, 7 DESCRIPTION OF SYMBOLS Opening, 8 ... Sealing part, 8A ... Free end, 9 ... Supporting body, 9A ... Rod-like part, 9B ... Base part, 100 ... Bag body, 101 ... Release material, 102 ... Adhesive layer

Claims (1)

An opening is formed at one end in the longitudinal direction of the bag body having a front side portion and a rear side portion located facing each other, and one opening side end of the front side portion and the rear side portion is connected to the other opening side end. A sealing part is formed at one opening side end, and the sealing part is bent so that it overlaps the other opening side end, thereby adhering the sealing part and the other opening side end. comprising a material layer on the opening side end of the sealing portion or said other, comprising a release member for covering the adhesive layer, prior KiHanare type material includes a main body portion which is releasably secured to the pressure-sensitive adhesive layer A tension part that is folded back to the free end side of the sealing part at one end of the main body part along the longitudinal direction of the bag body, and the free end of the tension part extends from the free end of the sealing part to the longitudinal direction of the bag body. A method of releasing the release material of the bag body protruding outward in the direction,
By providing a support for supporting the pulling portion of the release material, supporting the pulling portion of the plurality of bag bodies on the support, and pulling the bag body of the supported bag body, the bag is removed from the supported release material. A method for removing a release material from a bag, wherein the main body is released .

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