JPS61287568A - Press-through pack - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a so-called press-through pack in which when the contents are pushed out with a finger or the like, the sealing material is torn and the contents are exposed to the outside, and in particular, the invention relates to This invention relates to a press-through pack equipped with means to prevent the risk of the package being opened.

[Problem of invention]

Breath-through packs have good sealing properties and the contents can be easily taken out in one motion, so they are often used for packaging small solid objects, especially tablets. However, it may be dangerous if, for example, a young child accidentally opens the package and inserts the tablet into the opening. Additionally, the sealing material may be damaged by impact during handling such as transportation.

Therefore, an object of this invention is to provide a press-through pack that cannot be opened under normal circumstances, that is, the sealing material cannot be broken, and the sealing material can be broken only when taking out the contents. It is in.

[Means of problem solving]

In order to solve the above-mentioned problems, the present invention (according to this invention) includes a storage main body provided with a plurality of storage recesses connected by a plate-shaped part, and a storage body that seals the storage recesses by sticking to the plate-shaped part. In breath-through packs made of sealed sealing material,
The sealing material is formed by a first adhesive layer for adhering to the plate-shaped part, a base material, and a surface protection film 9 laminated on the surface thereof with a second adhesive layer, and the surface protection film 9 is laminated with the base material and the plate. A structure was adopted in which the peel strength between the surface protection film and the base material was lower than the peel strength of the shaped portion, and the peel strength was made easier to peel off by hand.

[For production]

When the configuration shown in 1-- is used, normally there is a surface protection film, so it is impossible to push out the contents and break the sealing material, and the contents can only be taken out by peeling off the film by hand. be able to.

〔Example〕

As shown in FIGS. 1 and 2, the storage body 1 is provided with a recess 2 for storing the contents T such as tablets, and this recess 2 is formed by a flat plate-shaped portion 3. They are connected by number. Such a storage main body 1 is produced, for example, by thermoforming a sheet of polyvinyl chloride, polypropylene, or the like.

-1- A sealing material 1o is pasted on the plate-shaped portion 3, thereby sealing the recess 2 and completing a breath-through pack.

As shown in FIG. 3, the sealing material 10 has a first adhesive layer 12 on one side of the base material 1 for bonding to the plate-like part 3 of the storage body 1, and a first adhesive layer 12 on the other side. A surface protection film 14 is laminated via a second adhesive layer 13. In addition, in the figure, 15 is a layer obtained by applying an overcoat to the printing layer.

The base material 1) is made of a material that can be easily torn by extruding the contents T, such as aluminum foil or glassine paper. Of course, not only a single body but also a laminate may be used.

The surface protection film 14 is made of a strong material that is not easily damaged, such as polyester or polypropylene film, or synthetic paper. In this case as well, it may be not only a single body but also a laminate.

The first adhesive layer 12 may be any layer as long as it can be bonded to the plate-shaped portion 3 of the packaging body 1 with a thermoplastic adhesive such as vinyl chloride-vinyl acetate copolymer resin. In addition, the second adhesive layer 1
For 3, an adhesive can be used in addition to a dry lamination adhesive.

Substrate 1) joined by the adhesives 12 and 13 described above
The peel strength of the plate-like part 3 is the same as that of the base material 1) and the protective film 14.
The peel strength is set at 15 mm or less, which must be stronger than the peel strength of

As a means for reducing the peel strength between the base material 1) and the protective film 14, as shown in FIGS. 3 and 4, there is a method of dotting the adhesive layer 13, that is, applying the adhesive in dots. There is. It is not limited to a dot shape, but may be a mesh shape, a line shape, etc. Further, depending on the type of adhesive, it may be applied to the entire surface as shown in FIG.

Furthermore, a method may be adopted in which the amount of adhesive applied is varied.

In addition, there is also a method of providing a release agent layer 17 as shown in FIG. The release agent layer is made of a resin with mold release properties such as acrylic resin, and is coated on the protective film 14 or base material 1) side with 0.1
~3.0f/lr? It is sufficient to apply the coating completely or partially.

Peel off the protective film 14 (see Figures 2 and 3).
As shown in the figure (this figure), when the sealing material 10 is folded several times along the pre-provided through-hole perforation 4, the plate-shaped portion 3 and the base material 1 will break at the perforation 4, so By holding the portion and pulling it in the peeling direction, the protective film 14 is peeled off as shown in FIG. Therefore, when the outside of the recess 2 is pressed with a finger along with the contents T, the base material 1) is torn.
Contents can be taken out.

Note that, as shown in FIG. 3, perforations 4 of the adhesive layer 13
The adhesive is applied to the entire surface of the outside part to increase the adhesive strength of the outside part, and the inside part is applied in stripes, for example, so that the cut piece 10' and the film 14 are bonded together, as shown in FIG.
does not separate and is easily peeled off. Further, peeling of the film 14 from the edge portion during handling such as transportation can be prevented. Of course, as shown in FIG. 4, the adhesive layer 13 may be dotted over the entire surface.

” Instead of perforation 4 marked 1, cut 4 as shown in Figure 4.
' may be provided on the plate-like part 3, or the adhesive layer 14 in FIG.
. . . Surface protective layer 17 . . . The tab 16 may be provided on the film 14 like a release agent layer.

〔effect〕

According to this invention, as described above, since the protective film is provided on the outer surface of the sealing material, the sealing material is not damaged during handling such as transportation, and the contents do not come out. There is no risk of accidentally opening the package. Moreover, when taking out the contents, the protective film can be easily peeled off, so the contents can be taken out easily in the same way as a normal press-through pack. If you use something that is possible, for example an adhesive, the film 1
4 can be peeled off and then reattached.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the press-through pack, Figure 2 is the same 1
3 to 7 are partially enlarged sectional views of the press-through pack. DESCRIPTION OF SYMBOLS 1... Storage body, 2... Storage recess, 3... Plate-shaped part, 4... Perforation, 4'... Cut, 10... Sealing material, 1)... Base material, 12...first adhesive layer, 1
3. Second related patent applicant Toyo Aluminum Co., Ltd. Same agent Kama 1) Sentence 2 7th procedural amendment (vinegar) December 28, 1985

Claims (6)

[Claims] (1) A press-through pack consisting of a storage main body having a plurality of storage recesses connected by a plate-like part, and a sealing material that seals the storage recesses by adhering to the plate-like part; The material consists of a base material and a first layer provided on one side of the base material.
and a surface protection film provided on the other surface of the base material via a second adhesive layer, and this base material is bonded to the plate-shaped part with the first adhesive layer. A press-through pack characterized in that the peel strength of the plate-shaped portion is greater than the peel strength of the base material and the surface protection film. (2) A cut is provided in the vicinity of the end of the plate-like portion of the storage main body, and the adhesive strength of the second adhesive layer is stronger on the outer side of the cut than on the inner side. ) Press-through pack as described in section. (3) A perforation is provided near the end of the joint between the plate-like part and the sealing part of the storage main body, and the adhesive strength of the second adhesive layer is lowered on the outer side of the perforation than on the inner side. A strengthened press-through pack according to claim (1). (4) The press-through pack according to claim (1), wherein the second adhesive layer has a cutout portion in the form of dotted lines, lines, or grid shapes. (5) The pulse through pack according to claim (1), wherein the second adhesive layer has a smaller amount of adhesive applied than the first adhesive layer. (6) The press-through pack according to claim (1), wherein a release agent layer is present in the second adhesive layer.