JP6067603B2 - Blister packing machine - Google Patents

Description

  The present invention relates to a blister packaging machine.

  Generally, a blister pack is composed of a container film in which a pocket portion capable of accommodating a work is formed and a cover film attached to the container film so as to seal an opening of the pocket portion in which the work is accommodated. Yes.

  In recent years, as one of them, a peel-open type blister pack in which a work is taken out from a pocket portion by peeling a cover film from a container film is also known.

  Such a blister pack includes a step of forming a pocket portion while transporting a belt-like container film, a step of filling a work in the pocket portion, and a cover film attached to the container film so as to seal the opening side of the pocket portion. It is manufactured through a process of attaching, a process of separating a blister pack as a final product from a strip-shaped blister film formed by attaching both the films (see, for example, Patent Document 1).

  In some cases, a predetermined scrap (end material) portion that does not become a product is punched out before the blister pack is separated from the blister film.

  For such scrap punching, for example, a scrap punching device 90 as shown in FIG. 8 is used. The scrap punching device 90 includes a punch 91, a die 92, and a pressing member 93.

  First, after holding the blister film 94 between the die 92 and the pressing member 93 (see FIG. 8A), the punch 91 is lowered (see FIG. 8B) and pushed into the punch insertion hole 92a. As a result, the scrap 96 is punched (see FIG. 8C).

JP 58-31712 A

  However, the cover film used for the above-described peel-open type blister pack generally includes various adhesives such as an adhesive layer (easy peel film layer) that is releasably adhered to a container film, and an aluminum film and a resin film. It has a multilayer structure in which layers are stacked.

  For this reason, when the scrap 96 is punched out as illustrated in FIG. 8C, some of the various adhesive layers of the cover film 94a are stretched by the punch 91, and the blister pack 100 [ 9 (a)] The container film 94b on the side may wrap around the cut surface 94c and adhere to the cut surface 94c.

  When such a problem occurs, not only the design properties are lowered, but also when the blister pack 100 is opened, a part of the cover film 94a is removed in the process of peeling the cover film 94a from the container film 94b. There is a risk of delamination (see delamination) that occurs at the boundary of the layers (see FIG. 9B). As a result, the openability of the blister pack 100 may be reduced.

  Such a defect is a problem that cannot occur when the product is punched out on the blister pack side or when scrap is punched out from the container film side.

  This invention is made | formed in view of the said situation, and makes it one of the main objectives to provide the blister packaging machine which can aim at the fall suppression of the openability of a blister pack, etc.

  Hereinafter, each means suitable for solving the above-described problem will be described separately. In addition, the effect specific to the means to respond | corresponds as needed is added.

Means 1. A blister for producing a peel-open blister pack comprising a container film having a pocket for containing contents and a cover film attached to the container film so as to close the pocket A packaging machine,
A pocket portion forming means for forming the pocket portion in the container film while conveying the belt-shaped container film;
Filling means for filling the pocket portion with the contents;
Attaching means for attaching the band-like cover film so as to close the pocket portion with respect to the container film filled with the contents in the pocket portion;
Scrap punching means for punching from the cover film side a predetermined scrap portion that does not become the blister pack from a strip-shaped blister film with the cover film attached to the container film;
A blister pack separating means for separating the blister pack from the blister film,
The scrap punching means is:
A punch for punching the scrap;
A die having a punching hole into which the punch is inserted;
A pressing member for pressing the blister film placed on the die,
The blister film is configured to be sandwiched by the die and the pressing member,
The die is
By forming a notch on the periphery of the opening of the punching hole inside the portion where the blister film is sandwiched ,
A blister wrapping machine, wherein a height difference is provided between a cutting blade portion for punching the scrap and a film placement portion on which the blister film is placed when punching the scrap. .

  According to the scrap punching means according to the above means 1, scrap is punched from the blister film by the punch entering the punching hole of the die. At this time, since there is a height difference between the cutting edge part on the die side and the film mounting part, the blister film is pushed by the punch and extends in the formation section of the notch part of the die. Become. By cutting the blister film in a state where the blister film is stretched and tension is applied in this way, a force is applied to the blister film after cutting to shrink and return. Thereby, generation | occurrence | production of the malfunction that a cover film wraps around the cut surface of a container film can be reduced.

  As a result, it is possible to reduce the occurrence of delamination of the cover film and to suppress the lowering of the openability of the blister pack.

  On the other hand, in order to reduce the occurrence of the above problems, a method of reducing the clearance between the punch and the die can be considered. However, in addition to making it difficult to reduce the clearance itself, this method also increases the degree of friction between the punch and the die, which may shorten the life of the scrap punching apparatus. On the other hand, according to this means 1, since it is not necessary to make the clearance between the punch and the die extremely small, wear of the punch and the die can be suppressed, and the life of the scrap punching device can be extended.

  The “notch” formed at the periphery of the opening of the die punching hole also includes a “chamfered portion” in which the periphery of the opening is chamfered in a tapered shape.

  Mean 2. The blister packaging machine according to means 1, wherein the cutting edge portion of the die has a cutting edge angle of 90 ° or less.

  If the cutting edge portion of the die has a blade edge angle larger than 90 °, for example, if the “notch portion” has a configuration like the above-mentioned tapered “chamfered portion” or the like, its inclination angle or the like Depending on the case, the sharpness may be deteriorated, and the same problem as in the prior art may occur. On the other hand, according to the means 2, it is possible to suppress the occurrence of the above problems.

  Means 3. The blister packaging machine according to means 1 or 2, wherein the notch is a notch-shaped recess.

  According to the means 3, when the blister film is cut, a gap is formed between the blister film stretched by the punch and the notch. Thereby, when the blister film after cutting shrinks and returns to its original state, the frictional resistance and the like with the die disappear, so that the operational effect of the means 1 can be made more reliable.

It is the schematic which shows the whole structure of the blister packaging machine which concerns on one Embodiment. (A) is a perspective view which shows a blister pack, (b) is sectional drawing which shows a blister pack. It is a partial expanded sectional view which shows a blister pack. It is a top view which shows a blister film. It is a partial expanded sectional view which shows a scrap punching apparatus. (A)-(c) is explanatory drawing for demonstrating a scrap punching process. (A)-(d) is the elements on larger scale which show the die concerning another embodiment. (A)-(c) is explanatory drawing for demonstrating the conventional scrap punching process. (A) is a perspective view showing a conventional blister pack in a state in which the adhesive layer of the cover film wraps around the cut surface of the container film, and (b) is a blister in a state where the cover film has been delaminated. It is a perspective view which shows a pack.

  Hereinafter, an embodiment will be described with reference to the drawings. First, the blister pack 1 to be manufactured will be described in detail.

  As shown in FIGS. 2A and 2B, the blister pack 1 according to this embodiment is attached to the container film 3 having one pocket portion 2 and the container film 3 so as to close the pocket portion 2. The cover film 4 is provided.

  Moreover, the work part 5 as a content is accommodated in the pocket part 2 one by one [refer FIG.2 (b) etc.]. Examples of the work 5 include electronic parts, electronic devices, foods, medicines, medical devices, and the like.

  The container film 3 in the present embodiment is made of a thermoplastic resin material such as PVC (polyvinyl chloride) having a thickness of about 200 to 1000 μm, for example. Further, the container film 3 is formed with a flange portion 3 a so as to extend outward from the peripheral edge of the opening of the pocket portion 2.

  On the other hand, the cover film 4 is formed of a film obtained by laminating another kind of synthetic resin film on an aluminum vapor-deposited synthetic resin film, and is detachably attached to the container film 3 (flange portion 3a).

  More specifically, as shown in FIG. 3, the cover film 4 includes a PET (polyethylene terephthalate) layer 4a having a thickness of 12 μm, an adhesive A layer 4b having a thickness of 5 μm, and a thickness of 12 μm in this order from the outside (upper side in FIG. 3). A multilayer structure comprising a VMPET (aluminum-deposited PET) layer 4c, an adhesive B layer 4d having a thickness of 5 μm, a PET layer 4e having a thickness of 12 μm, and an EPF (easy peel film) layer 4f having a thickness of 30 μm. Yes. Here, the EPF serves as an adhesive layer between the container film 3 and the cover film 4. Moreover, as adhesives A and B, arbitrary adhesive agents, such as a polyethylene resin, are used, for example. However, in drawings other than FIG. 3, the cover film 4 is simplified and shown in one layer.

  Moreover, in the blister pack 1 of this embodiment, it manufactures so that the container film 3 (flange part 3a) and the cover film 4 may not adhere | attach in one place of four corners. Thereby, the cover film 4 of this location becomes the knob | pick part 4a at the time of opening the blister pack 1. FIG.

  Here, the procedure for opening the blister pack 1 will be described. First, the container film 3 side is gripped with one hand, and the grip portion 4a of the cover film 4 is gripped with the other hand. Subsequently, the cover film 4 is peeled off from the container film 3 while picking the knob 4a. Thereby, opening of the blister pack 1 is completed, and the workpiece 5 accommodated in the pocket portion 2 can be taken out.

  As will be described later, the blister pack 1 according to the present embodiment punches the scrap 35a from a strip-shaped blister film 35 (see FIG. 4) formed by attaching a strip-shaped container film 3 and a strip-shaped cover film 4. It is manufactured through a process, a process of separating the blister pack 1 as a final product from the strip-shaped blister film 35, and the like. In FIG. 4, for the sake of convenience, the blister film 35 is provided with a dotted pattern.

  As shown in FIG. 4, the blister film 35 according to this embodiment has three blister packs 1 arranged in the film width direction (vertical direction in FIG. 4) and each blister pack in the film transport direction (horizontal direction in FIG. 4). The scraps 35a are connected to each other, the scraps 35b are connected to each blister pack 1 in the film width direction, and the scraps 35c are connected to each other in the film conveying direction at both ends in the film width direction.

  Next, the structure of the blister packaging machine 10 for manufacturing the blister pack 1 will be described.

  As shown in FIG. 1, in the blister packaging machine 10, the strip-shaped container film 3 drawn out from the roll-shaped original fabric is intermittently conveyed toward the downstream side by the chain clip conveyor 11 and the like.

  First, a heating device 12 and a pocket portion forming device 13 are provided on the downstream side of the original container film 3. The heating device 12 and the pocket portion forming device 13 constitute the pocket portion forming means in this embodiment.

  The heating device 12 includes an upper mold 12 a and a lower mold 12 b that are arranged above and below the container film 3, and is configured to be able to partially heat the formation range of the pocket portion 2 of the container film 3.

  The pocket portion forming device 13 is similar to the shape of the pocket portion 2 and has an upper die 13a having a small plug (not shown) and a lower die having a molding recess (not shown) corresponding to the shape of the pocket portion 2. 13b.

  First, in a state where the container film 3 is heated by the heating device 12 and becomes relatively flexible, the upper mold 13a and the lower mold 13b relatively move in a direction in which they approach each other. Subsequently, the plug protrudes from the upper mold 13a, and the rough shape of the pocket portion 2 is formed. Finally, air is blown from the upper mold 13 a and the container film 3 is pressed against the molding recess of the lower mold 13 b, thereby forming the pocket portion 2 at a predetermined position of the container film 3. The pocket portion 2 is formed at an interval between the transport operations of the container film 3.

  Further, on the downstream side of the pocket portion forming device 13, a filling device 14 is provided as a filling means for filling the pocket portion 2 with the work 5.

  On the other hand, the original film of the cover film 4 formed in a strip shape is wound and arranged separately from the container film 3 in a roll shape. The cover film 4 drawn out from the original fabric is guided to a receiving roller 15 provided on the downstream side of the filling device 14. The cover film 4 is superposed on the container film 3 so as to close the pocket portion 2 by being guided to the receiving roller 15.

  On the downstream side of the receiving roller 15, a sealing device 16 is provided as attachment means. The sealing device 16 includes an upper mold 16a whose lower surface is heated to a predetermined sealing temperature, and a lower mold 16b in which a recess (not shown) corresponding to the pocket portion 2 is formed. 16b is configured to be vertically movable and press-contactable.

  Then, the container film 3 and the cover film 4 are fed between the upper mold 16a and the lower mold 16b, and the films 3 and 4 are pressed against each other by the molds 16a and 16b, thereby covering the flange portion 3a of the container film 3. The film 4 will be stuck. As a result, a band-shaped blister film 35 in a state where the pocket portion 2 filled with the workpiece 5 is sealed with the cover film 4 is manufactured.

  On the downstream side of the sealing device 16, a scrap punching device 17 is provided as a scrap punching means for punching the scrap 35 a from the blister film 35. Details of the scrap punching device 17 will be described later.

  A scrap hopper 18 for storing the punched scrap 35 a is provided below the scrap punching device 17.

  On the downstream side of the scrap punching device 17, a cutting device 19 is provided as a blister pack separating means for separating the blister pack 1 and the scrap 35 b from the blister film 35. The cutting device 19 according to the present embodiment is composed of a plurality of rotating cutters provided corresponding to the boundary line 35d (see FIG. 4) between the blister pack 1 and the scraps 35b and 35c. Each rotary cutter cuts each of the boundary lines 35d along the film transport direction as the blister film 35 is transported.

  Below the cutting device 19, a conveyor 21 is provided corresponding to the position where each blister pack 1 cut from the blister film 35 falls. The blister pack 1 is transferred to the finished product hopper 22 by the conveyor 21 and temporarily stored.

  Further, below the cutting device 19, a scrap hopper 23 for storing the scrap 35b is provided corresponding to a position where the scrap 35b cut from the blister film 35 falls.

  On the downstream side of the cutting device 19, a cutting device 25 for cutting the scrap 35c remaining after the blister pack 1 or the like is separated is disposed. The scrap 35 c is cut into a predetermined size by the cutting device 25 and stored in the scrap hopper 27.

  Although the outline of the blister packaging machine 10 is as described above, the scrap punching device 17 will be described in detail below with reference to FIGS.

  The scrap punching device 17 is placed on a punch 41 for punching the scrap 35a from the blister film 35, a die 42 having a punching hole 42a into which the punch 41 is inserted, and an upper surface 42b of the die 42 at the time of scrap punching. And a pressing member 43 for pressing the blister film 35 to be pressed.

  In the present embodiment, the punch 41 and the pressing member 43 are arranged above the blister film 35 (cover film 4 side) conveyed along the substantially horizontal direction, and the die 42 is below the blister film 35 (container film 3 side). ).

  The punch 41, the die 42, and the pressing member 43 are configured to be movable up and down by a driving mechanism (not shown). As the drive mechanism, a motor, a fluid pressure cylinder, a cam transmission mechanism, or the like can be employed.

  On the upper surface 42b side of the die 42, a step recess 45 is formed as a notch at the periphery of the opening of the punching hole 42a. Thereby, in the die | dye 42, the cutting blade part (edge part) 46 for punching out the scrap 35a, and the upper surface 42b as a film mounting part in which the blister film 35 is mounted when punching out the scrap 35 is carried out. There is a step (height difference) between them.

  Further, the blade edge angle α of the cutting edge portion 46 of the die 42 in the present embodiment is set to 90 °.

  Now, with regard to the procedure and operational effects of manufacturing the blister pack 1 by the blister packaging machine 10 configured as described above, in particular, after the pocket 5 is filled with the work 5 and the sealed blister film 35 is formed. The description will focus on the various steps.

  The blister film 35 formed through the pocket forming process for forming the pocket 2, the filling process for filling the pocket 2 with the work 5, the attaching process for attaching the cover film 4 to the container film 3, etc. It is transferred to a punching process (scrap punching device 17).

  In the scrap punching device 17, the punch 41 and the pressing member 43 are positioned at a standby position spaced upward from the blister film 35 at the normal time, that is, while the blister film 35 is being conveyed, and the die 42 is moved downward from the blister film 35. It is located at the standby position separated from

  When the blister film 35 intermittently conveyed is stopped at a predetermined position, the punch 41 and the pressing member 43 are lowered and the die 42 is raised. Subsequently, the blister film 35 is sandwiched between the pressing member 43 and the upper surface 42b of the die 42 (see FIG. 6A).

  Thereafter, the punch 41 further descends, and the punch 41 enters the punching hole 42 a of the die 42. At this time, since there is a height difference between the upper surface 42 b of the die 42 and the cutting edge 46, the blister film 35 is pushed by the punch 41 and extends in the section where the stepped recess 45 of the die 42 is formed. [See FIG. 6B].

  Then, the scraper 35a is punched from the blister film 35 in a state where the blister film 35 is stretched and tension is applied in this way (see FIG. 6C).

  Thereafter, the punch 41, the die 42, and the pressing member 43 are separated from the blister film 35, whereby the punching process of the scrap 35a is completed.

  When the scrap 35 a is punched out, the blister film 35 is transferred to the cutting device 19. Here, the blister pack 1 is separated from the blister film 35, and the production of the blister pack 1 is completed.

  As described in detail above, according to the present embodiment, the step recess 45 is formed in the periphery of the opening of the punching hole 42a of the die 42, whereby the cutting edge 46 for punching the scrap 35a in the die 42 is formed. When the scrap 35 is punched out, a step (height difference) is formed between the blister film 35 and the upper surface 42b.

  With this configuration, when punching out the scrap 35 a from the blister film 35, the blister film 35 is pushed by the punch 41 as described above and extends in the section where the stepped recess 45 of the die 42 is formed. By cutting the blister film 35 in a state where the blister film 35 is stretched and tension is applied in this way, the blister film 35 after cutting is subjected to a force that shrinks and returns to the original state. Thereby, generation | occurrence | production of the malfunction that the cover film 4 goes around to the cut surface of the container film 3 can be reduced.

  As a result, it is possible to reduce the occurrence of delamination of the cover film 4 and to suppress the lowering of the openability of the blister pack 1. In addition, since it is not necessary to make the clearance between the punch 41 and the die 42 extremely small, wear of the punch 41 and the die 42 can be suppressed, and the life of the scrap punching device 17 can be extended.

  In the present embodiment, the blade edge angle α of the cutting blade portion 46 of the die 42 is set to 90 °. As a result, a predetermined sharpness can be ensured, and the occurrence of the above problems can be further suppressed.

  Furthermore, in this embodiment, when the blister film 35 is cut, a gap is formed between the blister film 35 stretched by the punch 41 and the stepped recess 45, so that the blister film 35 after cutting is shrunk. When returning to the original state, there is no frictional resistance with the die 42, and the above-mentioned effects can be obtained more reliably.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) The configuration of the blister pack 1 to be manufactured is not limited to the above embodiment. For example, the blister pack 1 in the above embodiment has a configuration including one pocket portion 2, but is not limited thereto, and may be configured to have a plurality of pocket portions formed in one blister pack. Further, the size and shape of the blister pack 1 and the pocket portion 2 are not limited to the above embodiment, and different configurations may be adopted.

  In the above embodiment, the container film 3 (flange portion 3a) and a part of the cover film 4 are not bonded, and the knob 4a is formed when the blister pack 1 is opened. Not limited, a break line such as a half-cut line is formed in advance on a part of the flange part 3a, and when opening, the flange part 3a is bent along the break line and a part of the outer edge part is broken. The cover film 4 may be peeled off by picking up the part.

  (B) The material and layer structure of the container film 3 and the cover film 4 are not limited to the above embodiment.

  For example, in the above-described embodiment, the container film 3 is formed of PVC. However, the present invention is not limited to this, and a structure formed of a metal material such as aluminum as well as a resin material such as CPP (unstretched polypropylene) or PET. It is good.

  (C) The configuration of the blister film 35 is not limited to the above embodiment. For example, in the above-described embodiment, three blister packs 1 are manufactured at the same time in the width direction of the blister film 35. Alternatively, four or more blister packs 1 may be manufactured in the width direction of the blister film 35. In addition, a configuration in which one or two pieces are manufactured may be used.

  (D) The configuration of the scrap punching means is not limited to the scrap punching device 17 of the above embodiment.

  For example, in the die 42 according to the above embodiment, the stepped recess 45 as the notch is formed and the cutting edge angle α of the cutting edge 46 is set to 90 °, but instead of this, FIG. As shown to a), it is good also as a structure by which the taper-shaped chamfering part 81 was formed as a notch part. Further, as shown in FIGS. 7B to 7D, a configuration may be adopted in which notched concave portions 82, 83, 84 having at least part of a substantially arc-shaped cross section are formed. Moreover, you may comprise so that the blade edge | angular angle of the cutting blade part 46 of the die | dye 42 may be less than 90 degrees like the notch recessed part 84 shown in FIG.7 (d).

  (E) The configuration of the blister pack separating means is not limited to the above embodiment. For example, the cutting device 19 of the above-described embodiment includes a plurality of rotating cutters, and is configured to separate the blister pack 1 from the blister film 35 by cutting along the film transport direction as the blister film 35 is transported. For example, the blister pack 1 may be punched from the blister film 35 in units of one sheet.

  DESCRIPTION OF SYMBOLS 1 ... Blister pack, 2 ... Pocket part, 3 ... Container film, 4 ... Cover film, 5 ... Work, 10 ... Blister packaging machine, 35 ... Blister film, 35a ... Scrap, 17 ... Scrap punching apparatus, 41 ... Punch, 42 ... Die, 43 ... Pressing member, 45 ... Step recess, 46 ... Cutting blade part.

Claims (3)

A blister for producing a peel-open blister pack comprising a container film having a pocket for containing contents and a cover film attached to the container film so as to close the pocket A packaging machine,
A pocket portion forming means for forming the pocket portion in the container film while conveying the belt-shaped container film;
Filling means for filling the pocket portion with the contents;
Attaching means for attaching the band-like cover film so as to close the pocket portion with respect to the container film filled with the contents in the pocket portion;
Scrap punching means for punching from the cover film side a predetermined scrap portion that does not become the blister pack from a strip-shaped blister film with the cover film attached to the container film;
A blister pack separating means for separating the blister pack from the blister film,
The scrap punching means is:
A punch for punching the scrap;
A die having a punching hole into which the punch is inserted;
A pressing member for pressing the blister film placed on the die,
The blister film is configured to be sandwiched by the die and the pressing member,
The die is
By forming a notch on the periphery of the opening of the punching hole inside the portion where the blister film is sandwiched ,
A blister wrapping machine, wherein a height difference is provided between a cutting blade portion for punching the scrap and a film placement portion on which the blister film is placed when punching the scrap. .   The blister packaging machine according to claim 1, wherein the cutting edge portion of the die has a cutting edge angle of 90 ° or less.   The blister packaging machine according to claim 1 or 2, wherein the notch is a notch-shaped recess.

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