JP5248295B2 - Blister pack cover material and blister pack using the same - Google Patents

Description

  The present invention relates to a cover material for a blister pack and a blister pack using the same.

  The blister pack is widely used as a package for displaying cosmetics, daily necessities, pharmaceuticals, small electric parts, etc. at a store. As a blister pack, a blister pack that is thermoformed from a resin sheet and includes a cover material having a recess provided with an article storage portion and a flat lid member that seals the recess opening of the cover material is known. is there. This type of blister pack is a stopper fixing type in which a lid member is fixed to a cover material using a stopper such as staples, a pressure fixing type in which the lid member is thermocompression bonded to the cover material (for example, Patent Document 1), The cover material is roughly divided into a slide type (for example, Patent Document 2) in which a cover material is inserted along a guide groove formed by folding both side edges of the cover material. For reasons such as easy opening and the like, there is a tendency that the crimping and sliding type is frequently used.

This type of blister pack may be displayed at a store in a state of being hung on a hook or the like or in a state of being self-supported on a shelf. The cover material for a blister pack displayed in a self-supporting state is provided with a leg portion for enabling the blister pack to stand on its lower end (Patent Document 2).
Japanese Patent Application Laid-Open No. 09-255030 JP 2006-137430 A

  For example, in a slide-type blister pack, the opening of the recess (housing portion) is sealed by engaging the cover material with the folded portion of the cover material at the side portion, but the cover material is sealed at the lower end portion (or upper end portion). Since the lid and the cover material are not in close contact with each other, there is a risk that foreign matter may enter the housing portion through a gap formed between the two and the article may be removed. In particular, as in the above-mentioned Patent Document 2, when a leg portion that enables the blister pack to be self-supporting is formed on the cover material, the leg portion is as close to the lower edge of the cover material as possible in order to ensure the self-standing stability of the blister pack. Since it is necessary to provide it at a close position, the above problem is likely to occur. Further, in this case, the cover material to which the lid member is fixed by crimping has a problem that a crimping failure with the lid member is likely to occur because the crimping area with the lid member is minimized at the lower end of the cover member. As described above, such a press-bonding failure causes problems such as foreign matter entering into the housing portion and articles being pulled out.

  The present invention has been made in view of the above-mentioned problems, and the problem is that there is a risk that foreign matter may intrude or articles may be extracted without reducing workability when fixing the lid. An object of the present invention is to provide a cover material for a blister pack with a low content.

In order to solve the above-described problems, the present invention includes a concave portion that is thermoformed from a resin sheet and has an article accommodating portion, and a flange portion that extends outward from the periphery of the opening of the concave portion. in the cover member for the blister packs are sealed with a lid, the bottom edge of the cover member, the flap portion of the foldable repeated on the back side of the cover member is provided, the flap portion, the folded, a housing part side The three-dimensional shape portion has a support surface that faces the housing portion when the flap portion is folded back, and the support surface is in a state in which the return of the folded flap portion is restricted by the lid member. A cover material for a blister pack is provided that supports the back surface of the article accommodated in the accommodating portion .

  The term “thermoforming” as used in the present invention refers to a technique for obtaining a molded product having a predetermined shape by deforming a heat-softened resin sheet along a mold. Specifically, the resin sheet is obtained by vacuuming. Vacuum forming that deforms along the mold, compressed air molding that deforms the resin sheet along the mold by supplying compressed air, or deforming the resin sheet along the mold by using both vacuuming and compressed air supply This refers to a technique such as vacuum / pressure forming.

  As described above, the cover material according to the present invention is characterized in that the end portion is provided with a flap portion that can be repeatedly folded on the back side of the cover material. If it is such a structure, the contact area of the edge part of a cover material and a cover material can be increased by folding up a flap part. As a result, in the cover material to which the lid member is fixed by pressure bonding, it is difficult for a pressure bonding failure to occur, and foreign matter can be prevented from entering. Further, in the cover material into which the lid material is slid and inserted, the flap portion can be elastically adhered to the lid material, so that it is possible to reduce the possibility of dust and the like entering. Note that the flap portion is provided at the edge of the cover material, and the above-described effects can be obtained simply by folding the flap portion back to the back side of the flange portion. As a result, a situation where the flap portion is not lowered does not occur.

  It is desirable that the flap portion has the same width as the opening end portion of the concave portion or is wider than this. By doing in this way, the penetration | invasion of a foreign material and extraction of articles | goods can be suppressed or prevented more effectively.

  When the flap portion is folded, it is desirable that the back surface of the flap portion and the back surface of the flange portion be positioned on the same plane. This is because, since there is no step on the contact surface with the lid material, for example, when the lid material is pressure-bonded and fixed, the fixing accuracy can be increased. Moreover, it is possible to prevent the formation of unnatural irregularities on the surface of the lid member, and it is possible to prevent the design properties of the blister pack from being lowered.

  By the way, the blister pack is used as a package for accommodating various products. For example, when packaging an assembly-type product that is assembled after opening, it cannot be solved by a conventional blister pack. There is another problem. More specifically, such a product is often housed in a state in which each component is centered so as to display each component in a manner that can be generally equated with the finished product. However, it is rare that each article has the same diameter, and therefore, there is a problem that articles having a relatively small diameter rattle in the blister pack. This type of problem can be avoided by, for example, providing another member that fills the gap between the back surface of the article formed with a relatively small diameter and the cover material surface. This causes complication of assembly. Such a problem can occur not only in assembly-type products composed of a plurality of articles, but also in the case of packaging products with different thicknesses in various places in the length direction (axial direction) such as tube-shaped products. .

  The above problem can be solved by providing a three-dimensionally shaped portion that protrudes toward the accommodating portion by folding the flap portion. That is, if a three-dimensionally shaped part having an appropriate shape is provided at an appropriate position of the flap part, the gap can be filled by fixing the lid member with the flap part folded back. In addition, since the three-dimensionally shaped part is formed in the flap part, there is no increase in the number of parts and no deterioration in workability at the time of assembling the lid material. Therefore, according to the above-described configuration, it is possible to realize rattling of a relatively small-diameter article / part at a low cost while accommodating each constituent article / part in an appropriate manner.

  For example, when a cylindrical article is packaged, it is necessary to prevent rotation of the article. This is because if the article is rotated in the housing portion during transportation or the like, it is difficult to display it in the store in an appropriate manner. Currently, for example, there are measures such as providing convex portions on both side surfaces in the accommodating portion, sandwiching (restraining) the cylindrical article between these convex portions, and forming the shape of the accommodating portion in a shape that closely contacts the outer surface of the article. However, the former means cannot reliably prevent rotation, and the latter means complicates the shape of the housing portion and increases the manufacturing cost.

  Therefore, in the present invention, an auxiliary flap that can be repeatedly bent and extends along the depth direction of the storage portion is provided at the leading edge of the flap portion, and an auxiliary storage portion that stores one end of the article is provided in the auxiliary flap. Provide the provided configuration. In this case, the auxiliary accommodating portion can be formed in an annular shape that can restrain the outer surface of one end of the article over the entire circumference. Therefore, if the inner diameter dimension of the auxiliary accommodating portion is appropriately set, it is not necessary to devise special measures to the shape of the accommodating portion as described above, but rather to prevent rotation of the article while simplifying the accommodating portion shape. Can do. Accordingly, it is possible to obtain a cover material that can effectively prevent the rotation of the article at low cost.

  When the above configuration is adopted, there is a merit that the shape of the housing portion can be simplified as described above. However, when the shape of the housing portion is simplified, the clearance between the inner wall surface of the housing portion and the outer surface of the article is increased. For this reason, if the auxiliary flap rattles in the housing portion, the article may be greatly shaved in the housing portion. In order to avoid the occurrence of such a problem, when the above configuration is adopted, it is desirable to provide an engaging portion that engages with the folded auxiliary flap on the inner wall surface of the accommodating portion.

  A cover material having a concave portion is usually a group of molded products using a molding die in which a mold portion for forming a concave portion is continuously provided in the feeding direction of the resin sheet (and may be further provided in the width direction of the sheet). After the thermoforming, the group of molded products is trimmed into individual cover material shapes. And in the mold to be used, it is indispensable to interpose a surplus part called a loss part between the mold parts in order to secure the elongation allowance when the resin sheet is brought into close contact with each mold part by vacuum drawing or compressed air supply. It has become. In general, the loss part has a length approximately equal to the maximum height (or depth) of the adjacent mold part, and therefore, the resin sheet discharged after trimming has a large amount of material loss in which many unused parts remain. It was.

  In this respect, if the overall length of the flap portion is shorter than the maximum depth of the recess, the flap portion is used by using the loss portion, in other words, the unused portion of the resin sheet that has been originally disposed of. Further, it is possible to form a three-dimensional shape portion on this. Therefore, it is desirable because it is possible to obtain a flap portion and a three-dimensionally shaped portion that can achieve the above various effects without causing a particular increase in cost. Moreover, it is suitable also from a viewpoint of waste reduction. The “full length of the flap portion” here refers to the full length including the auxiliary flap when the auxiliary flap is provided at the tip edge of the flap portion.

  The flap part provided in the cover material can be brought into close contact with the cover material when the cover material is fixed in the folded state.

  As described above, according to the present invention, it is possible to provide a cover material for a blister pack that does not deteriorate the workability at the time of fixing a cover material and is less likely to cause foreign matter to enter or articles to be extracted. Can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a so-called pressure-fixing type in which a cover material 20 is thermocompression bonded to the back surface of a cover material 1 for blister packs (hereinafter simply referred to as “cover material 1”) according to the first embodiment of the present invention. It is a perspective view which shows an example of a blister pack BP.

  The cover material 1 is thermoformed from a resin sheet, in this embodiment a resin sheet made of polyethylene terephthalate (PET), and as shown in FIGS. 2 (a) and 2 (b), a product (article) not shown. The main part is comprised by the recessed part 2 in which the accommodating part 3 in which this is accommodated was provided, and the flange part 5 extended outward from the opening periphery of the recessed part 2. As shown in FIG. At the lower end of the recess 2, leg portions 4 for allowing the blister pack BP to stand independently are provided at two locations separated in the width direction of the cover material 1. 2A is a rear view of the cover material 1 in an unfolded state, and FIG. 2B is a YY sectional view of FIG. 2A. However, the thickness of the cover material 1 in the cross-sectional view is exaggerated, including the embodiments described later.

  In the present embodiment, the flange portion 5 includes a first flange portion 5 a extending outward from the opening side edge and the opening upper edge of the recess 2, and a second flange portion 5 b extending outward from the opening lower edge of the recess 2. It consists of. The second flange portion 5b is at a position lower than the first flange portion 5a via a step portion 5c having a width (height) substantially equal to the thickness of the cover material 1, and is integrated with the first flange portion 5a. Is formed.

  The lower end edge of the cover material 1 (lower end edge of the second flange portion 5b) extends downward, and the base end portion 7 (connection portion with the second flange portion 5b) serves as a fulcrum of the cover material 1 A tongue-shaped flap portion 6 that can be repeatedly folded back is integrally provided on the back side. The flap portion 6 has the same width as the opening lower end of the recessed portion 2 or wider than the opening lower end (the illustrated example is wider), and seals the opening lower end of the recessed portion 2 at the time of turning back (see FIG. 3A). Further, the flap portion 6 comes into close contact with the lid member 20 so as to return with elasticity when folded back. Further, the flap portion 6 of the present embodiment extends downward from the second flange portion 5b provided in the above-described manner, and is accommodated in the stepped portion 5c after being folded back. For this reason, in the state of the blister pack BP, the back surface of the flap portion 6 is positioned on the same plane as the back surface of the first flange portion 5a as shown in FIG. Further, the length L1 of the flap portion 6 is shorter than the maximum depth D1 of the recess 2.

  For example, a perforated through-hole is formed in the base end portion 7 of the flap portion 6 in order to facilitate the folding of the flap portion 6 (in order to enable repeated folding). Of course, the means for facilitating the folding back of the flap portion 6 is not limited to the perforated through-hole, and may be a ridge (crease) or the like.

  And after accommodating articles | goods (it shows with a dashed-two dotted line in FIG.3 (b)) in the accommodating part 3 of the cover material 1 which consists of the above structure, the flap part 6 is turned back to the back surface of the cover material 1, and this state Then, the lid material 20 is thermocompression bonded to the back surfaces of the first flange portion 5a and the flap portion 6 to complete the blister pack BP shown in FIG.

  Since the cover material 1 according to the present invention described above is integrally provided with a flap portion 6 that can be repeatedly folded on the back side of the cover material 1 at the lower end edge thereof, the flap portion 6 is folded back. Thereby, the opening lower end of the recessed part 2 can be sealed, and the contact area (crimping area) of the cover material 1 lower end and the lid | cover material 20 can be increased. Thereby, it can prevent effectively that the clearance gap resulting from the crimping | compression-bonding defect of the lid | cover material 20 arises, and prevention of the penetration | invasion of a foreign material and extraction of articles | goods is achieved. Further, the flap portion 6 is provided integrally with the lower end edge of the cover material 1, and the above effect can be obtained simply by folding back the flap portion 6 to the back side. There is no decline.

  In particular, in this embodiment, as is clear from FIG. 3, the flap portion 6 is formed with a length that reaches the formation region of the accommodating portion 3 when folded back, so that the lid member 20 is fixed (when crimped). ), The front surface of the flap portion 6 can be supported by an article, and the lid member 20 can be accurately bonded to the back surface of the flap portion 6.

  In addition, when the flap portion 6 is folded, the back surface of the flap portion 6 and the back surface of the flange portion 5 (first flange portion 5a) are positioned on the same plane so that no step is generated between the two surfaces. The crimping accuracy of the lid member 20 can be increased. Moreover, by setting it as such a structure, it can avoid that the unnatural unevenness | corrugation arises in the back surface of blister pack BP, and the designability of blister pack BP falls.

  Next, the manufacturing method of the cover material 1 mentioned above is demonstrated.

  FIG. 4 is a side view conceptually showing the main part of the molding device 40 for the cover material 1. In the figure, a PET resin sheet 42 is fed out from an original fabric roll 41 arranged on the left side of the figure. The resin sheet 42 is sequentially fed to a molding machine 50, an intermediate puncher and a trimming machine (not shown) by a conveying means (not shown), and the cover material 1 as a finished product is obtained when the resin sheet 42 is discharged from the trimming machine. In addition, it is also possible to arrange on the in-line a foil stamping machine, a pad printing machine, etc. that decorates the cover material 1 or engraves the names of raw materials.

  The molding machine 50 is a vacuum molding machine in which a main part is constituted by a heating part 51 and a molding part 52. The heating unit 51 is for heating and softening the resin sheet 42 to an appropriate molding temperature, and a heater (not shown) is arranged above or below the conveyance path. The resin sheet 42 heated and softened to an appropriate molding temperature by the heating unit 51 is transferred to the molding unit 52. As shown in FIG. 5, the molding unit 52 uses a molding die 53 in which mold parts 53 a for molding the recesses 2 are continuously arranged at predetermined intervals in the sheet feeding direction and the width direction. (Double-row double-row) recesses 2 are molded into the resin sheet 42. An infinite number of intake holes 53b are provided in the mold 53, and when the air between the resin sheet 42 and the mold 53 is drawn from each of the intake holes 53b from an unillustrated intake device, the resin sheet 42 is formed in each mold. It is deformed along the portion 53a (indicated by a dotted line in FIG. 5), whereby a large number of recesses 2 are molded into the resin sheet 42 at predetermined intervals.

  The resin sheet 42 in which many concave portions 2 are molded is transferred to the play portion 43 and temporarily stays in a slack state. As a result, there is a shift in cycle time between the molding machine 50 that forms the double row and double row recesses 2 into the resin sheet 42 in one shot and the subsequent machines that process only one row in the sheet feed direction in one shot. Absorbed. Next, the resin sheet 42 is transferred to an intermediate puncher (not shown), and a perforation for facilitating the folding of the flap portion 6 at a position corresponding to the base end of the flap portion 6 to be provided on the cover material 1 with this intermediate puncher. A through-hole is formed. Thereafter, the resin sheet 42 is transferred to a trimming machine, and the trimmed machine trims the resin sheet 42 into a predetermined shape, thereby obtaining individual finished products (cover material 1). On the other hand, the trimmed resin sheet 42 is wound around a scrap winder (not shown).

  During mass production, the above operations are continuously performed in parallel, and the cover material 1 is continuously formed.

  By the way, in the above-mentioned forming part 52, when the double row and double row recessed parts 2 are formed by one shot, between the mold parts 53a of the forming mold 53 (strictly speaking, the adjacent mold parts 53a in the feeding direction of the resin sheet 42). In the middle), in order to secure an extension allowance when the resin sheet 42 is brought into close contact with each mold part 53a by evacuation, it is referred to as a loss part R having a length Lr1 substantially equal to the maximum height H1 of the adjacent mold part 53a. It is essential to intervene surplus parts. The cover material 1 according to the present embodiment will be described in detail by taking the cover material 1 as an example. Even when the cover member 1 is not provided with the flap portion 6, the arrangement interval when the mold portion 53a is continuously provided in the sheet 42 feeding direction is as follows. It is necessary to make it the value which added together the separation distance between the both ends of the flange part 5, and the length Lr1 of the loss part R. FIG. In this case, the resin sheet 42 discharged after trimming must be a material with many unused portions and a large material loss.

  The inventors of the present application pay attention to the unused portion of the resin sheet 42 described above, and make the total length L1 of the flap portion 5 smaller than the maximum depth D1 of the concave portion 2, in other words, shorter than the length Lr1 of the loss portion R. Thus, the flap portion 6 is formed by using an unused portion of the resin sheet 42 that has been disposed of in the past. Therefore, the cover material 1 that exhibits the above-described effects can be obtained without causing a particular increase in cost.

  In the cover material 1 described above, the flap portion 6 that can be repeatedly folded is provided at the lower edge, but the flap portion 6 is provided at the upper edge or the side edge of the cover material 1 depending on the formation mode of the recess 2. It is also possible.

  6 and 7 show a second embodiment of the cover material 1 according to the present invention, which is a so-called slide-type blister pack cover material 1 in which a lid member 20 is slid and inserted into the back surface. The cover material 1 shown in the figure is provided for packaging of an assembly-type product composed of a first member B1, a second member B2, and a third member B3 which are separated and independent as shown by a dotted line in FIG. 6B. Is. In addition, in order to simplify description, the part which show | plays the same function as the cover material 1 which concerns on 1st Embodiment described above is attached | subjected, and a common reference number is attached | subjected, and duplication description is abbreviate | omitted.

  The accommodating portion 3 of the recess 2 is a first accommodating portion 31 for accommodating the first member B1, a second accommodating portion 32 for accommodating the second member B2, and a third for accommodating the third member B3. Each of the members B1 to B3 is partitioned into the accommodating portion 33, and the engaging portions 31a to 33a (see FIG. 6A) provided in the respective accommodating portions 31 to 33 are engaged in the axial direction, respectively. It can be held in the housing 3 separately and independently. The first housing portion 31 and the second housing portion 32 have a depth substantially equal to the depth (outer diameter size) of the first member B1 and the second member B2 in the display state, while the third housing portion 33 It is a predetermined amount deeper than the depth of the member B3 (see FIG. 6B). This is because each member can be displayed in an aspect (an aspect in which each member is centered) that can be generally identified with a finished product obtained by assembling the first to third members B1 to B3.

  In this embodiment, the leg 4 provided at the lower end of the recess 2 is provided at one location in the center in the width direction of the recess 2 (cover material 1).

  As in the first embodiment, the lower end edge of the cover material 1 (the lower end edge of the second flange portion 5b) extends downward, and the back side of the cover material 1 with the base end portion 7 as a fulcrum. A tongue-shaped flap portion 6 that can be repeatedly folded is integrally provided. The flap portion 6 has the same width as the opening lower end (width of the leg portion 4) of the concave portion 2 or wider (in the illustrated example, wide). When the flap portion 6 is folded back, the flap portion 6 comes into close contact with the lid member 20 so as to return elastically, so that the lower end of the opening of the recess 2 is sealed with the flap portion 6 (see FIG. 7A). Further, as in the first embodiment shown in FIG. 2, the flap portion 6 is located at a position lower than the first flange portion 5 a via a step portion 5 c having a width substantially equal to the thickness of the cover material 1. Since it extends downward from the flange portion 5b, the back surface of the flap portion 6 can be positioned on the same plane as the back surface of the first flange portion 5a with the flap portion 6 folded back (FIG. 7 ( see b)). The length L2 of the flap portion 6 is shorter than the maximum depth D2 of the concave portion 2.

The flap portion 6 protrudes by a predetermined amount in the opposite direction to the housing portion 3 in the unfolded state shown in FIG. 6, while the third housing portion 33 side when folded back to the back side shown in FIGS. The three-dimensional shape part 8 which protrudes in is provided. The protruding amount of the three-dimensionally shaped portion 8 is set so that the sum of this and the thickness of the third member B3 is substantially equal to the depth of the third accommodating portion 33. Shape Further, among the three-dimensional shape portion 8, the third member B3 and the facing surface to be accommodated in the third housing part 33 (the surface facing the third housing portion 33), which generally follows the back of the third member B3 Formed. Accordingly, the surface of the three-dimensionally shaped portion 8 that faces the third housing portion 33 when the flap portion 6 is folded back is the state in which the return of the flap portion 6 is restricted by the lid member 20 (more specifically, each After the first to third members B1 to B3 are accommodated in the accommodating parts 31 to 33, respectively, the third accommodating part 33 in a state in which the lid member 20 is assembled to the cover member 1 in which the flap part 6 is folded back. Functions as a support surface 8a [see FIG. 7B] capable of supporting the back surface of the third member B3 accommodated in the housing.

  Small flaps 9 and 9 that are folded back to the back side of the cover member 1 are provided at two locations that are spaced apart in the axial direction on both side edges of the flange portion 5 (first flange portion 5a). Among the small flaps 9 provided as a whole, the small flap 9 located at the lower left in the figure is provided with a through hole 9a opened on the front and back of the small flap 9. A protrusion 20a (see FIG. 8) formed on one side edge of the lid member 20 can be fitted into the through hole 9a. When the cover member 1 and the lid member 20 are assembled, the protrusion 20a is inserted into the through hole 9a. The relative movement of the two is restricted by fitting them together.

  And the assembly | attachment of the cover material 20 with respect to the cover material 1 which consists of the above structure is performed as follows. First, as shown in FIGS. 7 (a) and 7 (b), each of the small flaps 9 is folded back to the back side of the cover member 1 to form the guide groove 9b, and each member B1 to B1 is formed in each of the accommodating portions 31 to 33. Houses B3. Next, the lid member 20 is slid and inserted from below the cover member 1 with both side edges along the guide grooves 9b. And if the protrusion part 20a provided in the cover material 20 is made to fit in the through-hole 9a (refer FIG. 8) provided in the cover material 1, the blister pack BP shown in FIG. 8 will be completed.

  The cover material 1 according to the second embodiment of the present invention described above is integrally provided with a flap portion 6 that can be repeatedly folded back on the back side of the cover material 1 at the lower end edge thereof. Since it adheres elastically to the lid member 20, the lower end of the opening of the recess 2 can be sealed. As a result, it is possible to effectively prevent foreign matters such as dust from entering the recess 2 (accommodating portion 3). Moreover, since this flap part 6 is provided only in the lower end side of the cover material 1, the insertability of the cover material 20 does not fall.

  Moreover, in the cover material 1 which concerns on this embodiment, since the three-dimensional shape part 8 which protrudes in the 3rd accommodating part 33 side is provided in the flap part 6 by the folding of the said flap part 6, the flap part 6 is folded back. Only the gap formed between the back surface of the third member B3 and the lid member 20 can be filled. Thereby, it is possible to prevent the visibility of the third member B3 having a smaller diameter compared to the first and second members B1 and B2 from being lowered in the display state, and the third member B3 is in the front and back direction of the cover material 1. It is possible to prevent rattling. Since the three-dimensionally shaped portion 8 having such an effect is provided integrally with the flap portion 6, an increase in the number of parts and a decrease in the insertability of the lid member 20 due to this are avoided.

  Next, the manufacturing method of the cover material 1 which concerns on 2nd Embodiment of this invention is demonstrated. However, the main part of the molding apparatus for the cover material 1 is substantially the same as that shown in FIG. 4, and only the configuration of the molding part 52 of the molding machine 50 is different from that of the first embodiment. Therefore, only a specific example of the molding unit 52 is shown in FIG. 9, and description of other parts and behavior of the molding apparatus 40 is omitted.

  In the molding die 53 used in the molding part 52 shown in FIG. 9, mold parts 53a and 53c for molding the concave part 2 and the three-dimensionally shaped part 8 are provided continuously at predetermined intervals in the sheet feeding direction and the width direction, respectively. A large number of the concave portions 2 and the three-dimensional shape portion 8 are molded into the resin sheet 42 in one shot. An infinite number of intake holes 53b are provided in the mold 53, and when air between the resin sheet 42 and the mold 53 is drawn from each intake hole 53b from an unillustrated intake device, as shown by a dotted line in the figure. The resin sheet 42 is deformed along the respective mold parts 53a and 53c, whereby a large number of the concave portions 2 and the three-dimensionally shaped part 8 are molded into the resin sheet 42 at predetermined intervals.

  Also in the illustrated mold 53, the length Lr <b> 2 that is approximately equal to the maximum height H <b> 2 of the adjacent mold part 53 a, i.e., the maximum depth D <b> 2 of the recess 2, between the mold parts 53 a for molding the recess 2. Loss portion R is provided, and a mold portion 53 c for forming the three-dimensional shape portion 8 is provided within the range of the loss portion R. Therefore, also in the cover material 1 according to the second embodiment of the present invention described above, the flap portion 6 and further the three-dimensional shape portion 8 are formed by using the unused portion of the resin sheet 42 that has been disposed of conventionally. Therefore, this cover material 1 can also be obtained without causing a particular increase in cost.

  In 2nd Embodiment shown above, although the cover material 1 for goods packaging which consists of several member B1-B3 from which the depth was separated and independent was demonstrated, the structure shown in FIG. 6 etc. is only such goods. In addition, for example, it can also be suitably applied to cover materials for product packaging having different thicknesses in various places in the length direction, such as tube-shaped products.

  Moreover, in 2nd Embodiment shown above, although the cover material 1 which provided the flap part 6 which can be repeatedly folded in the lower end edge was demonstrated, the flap part 6 of this structure is provided in the upper end edge of the cover material 1 It is also possible.

  FIG. 10 shows a developed state of the cover material 1 according to the third embodiment of the present invention, and FIG. 11 shows a state immediately before assembling a cover material (not shown) on the cover material 1, so-called slide type blister pack. It is a 2nd structural example of the cover material 1 for an object. The cover material 1 in the illustrated example is provided for packaging of a cylindrical product C (see the dotted line in FIG. 11) formed with a substantially constant diameter over the entire length, and the cover material 1 of each of the above embodiments. Similarly, it is thermoformed from a resin sheet. Hereinafter, each part of the cover material 1 according to the present embodiment will be described, but the description of the parts different from the embodiment described above will be focused, and the description of the common parts will be simplified. Or omit it.

  The concave portion 2 (accommodating portion 3) has a substantially rectangular shape in plan view, and the depth D3 is set to be substantially the same over the entire length in the axial direction. However, the opening width of the accommodating portion 3 is gradually reduced toward the surface side of the cover material 1 from the viewpoint of securing a draft angle during molding. At the lower end of the recess 2, leg portions 4 for allowing the blister pack BP as a finished product to stand independently are provided at two locations separated in the width direction of the cover material 1.

  The lower end edge of the cover member 1 is repeatedly foldable, and is provided with a tongue-like flap portion 6 that engages with the flange portion 5 when folded back. Further, on the lower end edge (tip edge) of the flap portion 6, A tongue-shaped auxiliary flap 10 extending downward is provided. Similar to the base end portion 7 of the flap portion 6, the base end portion 12 of the auxiliary flap 10 is provided with a perforated through-hole (or a wire), so that the auxiliary flap 10 has its base end portion. 12 can be bent repeatedly with fulcrum 12 as a fulcrum. The length L3 of the auxiliary flap 10 is formed to be slightly shorter than the depth D3 of the housing portion 3, while the width of the auxiliary flap 10 is gradually reduced toward the cover material 1 surface side. It gradually shrinks downward in a way that corresponds to doing.

  Further, the auxiliary flap 10 protrudes by a predetermined amount in the direction opposite to the accommodating portion 3 in the unfolded state shown in FIG. 10, while extending in the vertical direction of the cover member 1 in the state shown in FIG. An auxiliary storage portion 11 is provided for storing the. As shown in FIG. 10A, the auxiliary accommodating portion 11 is formed in an annular shape in plan view, and the inner wall surface is provided with protrusions 11a spaced apart at a plurality of locations in the circumferential direction. And the internal diameter dimension of the circle | round | yen (imaginary circle) formed by connecting the front-end | tip part of each protrusion 11a is made into a smaller diameter than the lower end outer diameter dimension of the goods C. FIG.

  On both inner side surfaces of the accommodating portion 3, a convex portion 13 is provided as an engaging portion that engages with the folded auxiliary flap 10. More specifically, the convex portion 13 has a lower end portion substantially on the same plane as the distal end portion of the flap portion 6 (base end portion 12 of the auxiliary flap 10) folded back 180 ° from the developed state to the back side. It is provided so as to be positioned (see FIG. 11B).

  And the assembly | attachment of the cover material which is not illustrated with respect to the cover material 1 which consists of the above structure is performed as follows. As shown in FIG. 10B, after the lower end portion of the product C is accommodated (press-fit) in the auxiliary accommodating portion 11 of the auxiliary flap 10, the flap portion 6 is folded back 180 ° and the auxiliary flap 10 is further accommodated in the accommodating portion 3. Bend 90 ° to the side. Thereby, the auxiliary flap 10 is accommodated in the accommodating part 3 in a state extending along the depth direction of the accommodating part 3, and at the same time, the product C is accommodated in the accommodating part 3. At this time, the auxiliary | assistant flap 10 engages with the convex-shaped part 13 provided in the inner surface of the accommodating part 3 (refer FIG.11 (b)). Then, each small flap 9 is folded back to the back side of the cover material 1 to form a guide groove 9b, and a lid material (not shown) is slid and inserted along the guide groove 9b. In addition, after forming the cover material 1 in the predetermined form, the product C may be configured such that the lower end portion thereof is accommodated in the auxiliary accommodating portion 11 and the entirety thereof is accommodated in the accommodating portion 3.

  As described above, the auxiliary accommodating portion 11 provided in the auxiliary flap 10 can be formed in an annular shape that can restrain the outer surface of the lower end of the product C over the entire circumference. Therefore, the inner diameter dimension of the auxiliary housing portion 11 (strictly, the diameter dimension of a virtual circle formed by connecting the tip portions of the plurality of protrusions 11a) is made smaller than the lower end outer diameter dimension of the product C as described above. If this is the case, it is not necessary to devise a special device for the shape of the housing portion 3, but rather the function of preventing rotation of the product C can be enhanced while simplifying the shape of the housing portion 3. Accordingly, the cover material 1 that can effectively prevent the product C from being rotated can be obtained at low cost.

  However, if the shape of the container 3 is simplified as in the present embodiment, the clearance between the inner wall surface of the container 3 and the outer surface of the product C increases. For this reason, if the auxiliary flap 10 rattles in the housing portion 3, the product C may be greatly shaved in the housing portion 3. In this respect, since the convex portion 13 as the engaging portion provided on the inner surface of the accommodating portion 3 and the auxiliary flap 10 are engaged, this type of problem can also be effectively suppressed. Such an effect is obtained when the auxiliary flap 10 is pressed downward by the weight of the product C, and the flap portion 6 is elastically restricted by a cover material (not shown).

  Although not shown in the present embodiment, the back surface of the flap portion 6 and the back surface of the flange portion 5 are positioned on the same plane when the flap portion 6 is folded back, as in the first and second embodiments. It is also possible to devise a shape in the vicinity of the lower end edge of the cover material 1.

  Moreover, although illustration is abbreviate | omitted, the structure of each embodiment demonstrated above can also be used in combination. Specifically, for example, the configuration shown in FIG. 6 and the configuration shown in FIG. 10 can be provided continuously in the width direction. In this way, when a plurality of articles are displayed in parallel, each article can be displayed in an optimal manner.

  In the above, the concave portion 2 (and the three-dimensional shape portion 8 and the auxiliary accommodating portion 11) of the cover material 1 is formed by so-called vacuum forming in which the resin sheet 42 is deformed along the mold by vacuuming. 2 or the like by pressure-air forming in which the resin sheet 42 is deformed along the mold by supplying compressed air, or by vacuum pressure forming in which the resin sheet 42 is deformed along the mold by using both vacuuming and supply of compressed air. It is also possible to form.

  In the above, the cover material 1 thermoformed from the resin sheet 42 made of PET has been described. However, the resin sheet 42 that can be used for molding the cover material 1 is not limited to this. It is also possible to use a resin sheet 42 made of propylene (PP), biodegradable resin, or the like.

It is a perspective view which shows an example of a blister pack. (A) A figure is a rear view in the unfolded state of the cover material concerning a 1st embodiment of the present invention, and (b) figure is a YY sectional view of (a) figure. (A) A figure is a rear view which shows the state just before fixing a cover material to the cover material back surface shown to Fig.2 (a), (b) figure is YY sectional drawing of (a) figure. It is a side view which shows notionally the principal part of a cover material shaping | molding apparatus. It is a principal part expanded sectional view of the cover material shaping | molding part in a shaping | molding apparatus. (A) A figure is a rear view in the unfolded state of a cover material concerning a 2nd embodiment of the present invention, and (b) figure is a YY sectional view of (a) figure. FIG. 6A is a rear view showing a state immediately before the cover member is fixed to the back surface of the cover member shown in FIG. 6A, and FIG. 6B is a sectional view taken along line YY of FIG. It is a rear view of the blister pack formed by fixing a cover material to the cover material shown in FIG. It is a principal part expanded sectional view of the cover material shaping | molding part shown in FIG. 6 in a shaping | molding apparatus. (A) A figure is a rear view in the unfolded state of the cover material concerning a 3rd embodiment of the present invention, and (b) figure is a YY sectional view of (a) figure. FIG. 10A is a rear view showing a state immediately before fixing the cover material to the back surface of the cover material shown in FIG. 10A, and FIG. 10B is an enlarged YY sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover material for blister packs 2 Concave part 3 Accommodating part 4 Leg part 5 Flange part 5a 1st flange part 5b 2nd flange part 5c Step part 6 Flap part 7 Base end part 8 Solid shape part 10 Auxiliary flap 11 Auxiliary accommodating part 13 Engagement part (convex part)
20 Lid material 42 Resin sheet 50 Molding machine 52 Molding part 53 Mold 53a (for concave part molding) Mold part 53c (for three-dimensional shape part molding) D1 and D2 Maximum depth of concave part L1 and L2 Full length of flap part L3 Total length of the auxiliary flap

Claims (6)

For blister packs that are thermoformed from a resin sheet and that have a recess having an article storage portion and a flange portion that extends outward from the periphery of the opening of the recess, and the opening of the recess is sealed with a separate lid In the cover material,
Under edge, flap portion of the foldable repeated on the back side of the cover member is provided,
The flap portion has a three-dimensional shape portion that protrudes toward the housing portion by folding, and the three-dimensional shape portion has a support surface that faces the housing portion when the flap portion is folded back, and the support surface is a folded flap portion. A cover material for blister packs , which supports the back surface of an article accommodated in an accommodating portion in a state where the return of the material is regulated by a lid material. For blister packs that are thermoformed from a resin sheet and that have a recess having an article storage portion and a flange portion that extends outward from the periphery of the opening of the recess, and the opening of the recess is sealed with a separate lid In the cover material,
The lower end edge is provided with a flap part that can be repeatedly folded on the back side of the cover material,
The distal edge of the flap portion, can be repeatedly bent and extends along the depth direction of the housing portion auxiliary flaps are provided, and the auxiliary flap, and characterized in that it has an auxiliary accommodating portion for accommodating one end of the article blister pack for the cover material to be. The cover material for blister packs of Claim 2 which provided the engaging part engaged with the bent auxiliary | assistant flap in the inner wall surface of the accommodating part. The blister pack cover material according to any one of claims 1 to 3, wherein the back surface of the flap portion and the back surface of the flange portion are positioned on the same plane when the flap portion is folded back . The cover material for blister packs as described in any one of Claims 1-4 which made the full length of a flap part shorter than the maximum depth of a recessed part. A blister pack in which the flap portion is elastically adhered to the lid member by folding back the flap portion of the cover member according to any one of claims 1 to 5 .

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