JPH04215974A - Continuous lid seal and manufacture of packing container using same - Google Patents

Abstract

PURPOSE:To improve the sealing operation or productivity of packing container by the step of maintaining a lid seal sheet in a stretched position and thereby making easy setting of the limits and dimensions of the container, in a method wherein a partially opened packing container is sealed in a manner to effect its free unpacking by using the lid seal sheet consisting of a laminate of aluminum foil and synthetic resin. CONSTITUTION:A method of producing a packing container which features attaching an adequately thick reinforcing paper 3 to the rear face of a lid reel sheet 2 at the places other than predetermined areas where at least covering pieces 22 are punched.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application and Summary of the Invention] The present invention relates to a lid seal, particularly a thin lid seal made of a laminate of aluminum foil and synthetic resin, and a partially open packaging container that can be opened using the lid seal. This relates to a sealing method for sealing packaging containers, and by partially adhering the lid seal to reinforcing paper, the lid seal is made stiffer and easier to handle, thereby improving the workability of sealing the packaging container. This improves the productivity of these packaging containers.

0002

[Prior art and its problems] The opening part of a small container that opens upward can be freely opened using a thin lid seal made of a laminate of an aluminum foil layer (A) and a polyethylene terephthalate resin layer (hereinafter referred to as a PET resin layer). BACKGROUND ART Packaging containers that are sealed are often used as storage containers for insect repellents, fragrances, cosmetics, and the like. In this case, when the product is used, by peeling off the sheet and opening the opening of the packaging container, the contents inside the container can be taken out or the effects of the contents can be exerted.

[0003] In order to simultaneously manufacture large quantities of such packaging containers, each of which is releasably sealed with a lid seal, first, a container part (11) (1) having an opening part (10) is prepared.
1) forms a continuous container body (1) made of synthetic resin in which a large number of container bodies (1) are continuous at predetermined intervals. On the other hand, the synthetic resin sheet that seals the open part (10) of the container series (1) is the seventh
As shown in the figure, the aluminum foil layer (A) and the PET resin layer (
A hot melt adhesive layer (20) is formed on the bottom surface of an ultra-thin layer consisting of P), and the lid sealing sheet (2) is cut into a size that can cover the entire continuous container body.
is configured.

[0004] This lid sealing sheet (2) has a container part (
11) A large number of covering pieces (22
)(22) is constructed. The formation position of the covering piece (22) is determined when the lid sealing sheet (2) covers the entire container continuous body (1), and each container part (11) (1)
A part of the outer periphery of (22) (22) is aligned with the formation position of the opening part (10) (10) of (1) and does not fall off the lid seal sheet (2) through the uncut part. Connected to seat (2).

[0005] Then, this lid sealing sheet (2) is placed on the side where the open parts (10) (10) of the container parts (11) (11) are open, and the covering piece (22) of the lid sealing sheet (2) is )
(22) and the open part (10) of the container part (11) (11) (
10), the entire continuous container body (1) is coated, and the periphery of the open portion (10) (10) is heated from above the lid sealing sheet (2). On the back of the lid sealing sheet (2), there is a hot melt adhesive layer (
20) is provided, so the open part (10) (10)
By heating the peripheral edges of the openings (10), the respective covering pieces (22) (22) are thermally welded to the peripheral edges of the open portions (10) (10). As described above, the peripheral edges of the covering pieces (22) (22) are partially connected, so after heat welding, the covering pieces (22) (22) are partially connected.
22) When the lid sealing sheet (2) other than (22) is separated from the container continuous body (1), the covering pieces (22) (22) are easily cut from the lid sealing sheet (2) and are not thermally welded. Only the scraps of the lid sealing sheet (2) that are not present will be removed. After that, each container part (11) (11
) are cut so that they are independent from each other, the open part (10
) is closed with a covering piece (22) to complete a packaging container.

However, since this conventional lid sealing sheet (2) is a thin sheet, it is difficult to handle. In addition, since the entire wall is thin, even if a positioning hole is formed during welding and is made to match the positioning hole of the container continuous body (1), the container part (11) (11) and the covering Pieces (22) and (22) are difficult to match. In addition, since it is a laminate of an aluminum foil layer (A) and a PET resin layer (P), it tends to curl up due to the difference in the degree of expansion and contraction between the two, as shown in Figure 8, making it difficult to maintain the expanded state when handling. It is difficult. Therefore, problems such as the printed part on the surface of the lid sealing sheet (2) and the punched parts of the covering pieces (22) and (22) become misaligned, and the covering pieces (22) and (22) are wrinkled, resulting in poor workability.・Productivity is poor.

Regarding the invention of claim 1,

[Technical issues]
The present invention provides a covering piece (2) which is a thin sheet whose back surface can be thermally welded and which is welded to the welded part.
2) In the "lid seal" in which (22) is punched out with some uncut parts left in accordance with the size, shape, arrangement position, and number of the welded parts, the non-welded parts You can improve the positioning accuracy with the lid seal sheet (
In order to prevent the inconvenience of the lid sealing sheet (2) from curling up and worsening the workability of various processes, the lid sealing sheet (2)
) can be maintained in a widened state while making it difficult for the positioning hole spacing etc. to expand or contract.

[0008]

[Technical Means] The technical means of the present invention for solving the above-mentioned problems is as follows. A reinforcing paper (3) having a

[0009]

[Operation] The above technical means operates as follows. Add reinforcing paper (3) with an appropriate thickness to the back of the lid sealing sheet (2).
), the lid sealing sheet (2) made of a thin sheet is kept in an expanded state by the reinforcing paper (3), and will not curl up carelessly. In this state, predetermined printing is performed on the surface of the lid sealing sheet (2), and a region including the printed portion is punched out in a partially joined state to form covering pieces (22) (22). The reinforcing paper (3) covers at least the covering piece (2).
2) Since the covering piece (22) was pasted on the back side of the lid sealing sheet (2) outside the area where the punching was planned, the covering piece (22)
) (22) to the part to be welded, the reinforcing paper (3) does not get in the way; ) can be thermally welded to the part to be welded while the covering pieces (22) (22) are still attached. Also, even in this state, the lid seal sheet (
2) is maintained in a flat state by reinforcing paper (3). Since the covering pieces (22) (22) are punched out in such a manner that only a portion is joined to the lid sealing sheet (2), the covering pieces (22) (22) are heat welded to the welded part. After that, if you remove the parts other than the covering pieces (22) and (22),
The joining portions of the covering pieces (22) (22) to the lid sealing sheet (2) are easily cut, and only the covering pieces (22) (22) are thermally welded to the welded portion. after that,
The lid seal sheet (2) other than the covering pieces (22) (22) will be removed as scrap together with the reinforcing paper (3).

0010

[Effects] Since the present invention has the above structure, it has the following unique effects. By providing the reinforcing paper (3) on the back side, the lid sealing sheet (2) can be maintained in an expanded position, so the printing process of printing on the surface of the lid sealing sheet (2), the area including the printed part. A punching step of forming covering pieces (22) (22) by punching out a partially joined state;
In various processes such as a heat welding process in which the lid seal sheet (2) is thermally welded to the welded part, the lid seal sheet (2) becomes easier to handle, and range designation, dimension setting, etc. can be easily performed. This eliminates inconveniences such as misalignment between the printed part and the punched part, and various operations up to welding the covering pieces (22) to the welded parts can be performed efficiently, improving productivity.

Regarding the invention of claim 2,

[Technical issues]
The invention according to claim 2 is characterized in that “a continuous container body (
The contents are stored in each container part (11) (11) of 1), and all of the open parts (10) (10) of this container series (1) are sealed with a lid sealing sheet (2) made of a thin sheet. The covering piece (22) of the lid sealing sheet (2) is integrally covered with
) (22) and the welded parts at the periphery of each open part (10) (10), the parts of the lid sealing sheet (2) other than the covering pieces (22) (22) are removed, and the container is sealed. 1. A method for manufacturing a packaging container in which the continuous body (1) is divided into container parts (11) (11), according to claim 1.
By using the lid seal to seal the opening of the container, productivity of packaging containers is improved.

0012

[Technical Means] The technical measures taken for this purpose were as follows: ``The lid sealing sheet (2) is a sheet whose back side is heat-weldable, and the covering pieces (22) (22) are welded to the welded parts. A reinforcing paper (3) of an appropriate thickness is pasted on the back side of the lid sealing sheet (2) other than the area to be punched out in a partially uncut state, and a covering piece (22 ) (22) and their arrangement positions match those of the opening parts (10) (10) in the container continuous body (1), and the positioning means formed on the lid sealing sheet (2) and the container continuous body. The covering pieces (22) and (22) are welded to the welded portion of the continuous container body (1) in a state where the covering pieces (22) and (22) match those of (1).

[0013]

[Operation] The lid sealing sheet (2) has the structure described in detail in the invention of claim 1, and each container part (
11) After storing the predetermined contents in (11), open the continuous container body (1) while aligning the positioning means of the lid sealing sheet (2) with that of the continuous container body (1). If part (10) (10) side is covered with lid sealing sheet (2), the number of covering pieces (22) (22) and their arrangement positions match those of open part (10) (10). Therefore, each covering piece (22) (22) is thermally welded to the periphery of each open portion (10) (10), and the covering piece (
22) When the lid seal sheet (2) other than (22) is removed, only the covering pieces (22) (22) are exposed to the open parts (10) (1
0) will be thermally welded to the peripheral edge of 0). Since the covering pieces (22) (22) are simply heat-welded to the periphery of the open parts (10) (10) using the hot melt adhesive layer (20), if the covering pieces (22) are forcibly removed, , the opening part (10) of the container part (11) can be easily opened.

[0014]

[Effect] According to the invention of claim 2, the unique effects of the invention of claim 1 are exhibited, and also when covering the container continuous body (1) with the lid sealing sheet (2), the lid sealing sheet (2) can be applied. Since the sheet (2) remains spread out, a covering piece (10) is placed above each opening (10) (10).
22) The positioning work for arranging (22) can be performed reliably and easily, and the workability of sealing the open parts (10) (10) is improved. In other words, the container part (11
) (11), each open part (10) (1
0) with the covering pieces (22) (22) can be simultaneously produced in large quantities.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to FIGS. 1 to 6. The embodiments of the present invention relate to a sealing method for sealing the open part of a packaging container containing an insect repellent.Such a packaging container is first made by vacuum forming a synthetic resin sheet material into a shallow shape. A continuous container body (1) is manufactured in which a predetermined number of container portions (11) (11) each having a substantially truncated conical shape and open upwardly are arranged in a row in a vertical and horizontal manner, and the peripheral edges of the open portions are connected to each other. After that, the container part (11) (
The open part (10) (11) is partially punched out so that at least the vicinity of its periphery and the connecting piece (15) continuous from the vicinity of the periphery and passing through the diameter of the bottom face remain.
10). And the container part (11) (11)
Inside, the containers (c) and (c), which are solid insect repellents larger than the opening parts (10) and (10), are accommodated, respectively, and then the containers are made of synthetic resin like the continuous container body (1). Further, the continuous container body (1) is placed in such a manner that a flat closing plate (12) matching the size of the continuous container body (1) closes the original open side of the container portions (11) (11). Adhere or weld to. That is, in the container continuous body (1) of this embodiment, the open parts (10) (1) are provided on the bottom surfaces of the container parts (11) (11).
0), the bottom side of the container parts (11) (11) becomes the upper surface of the container continuous body (1), as shown in FIG. By accommodating the contents (c) (c) into the container part (11) (11) from the opening part and closing the opening part with the closing plate (12), the closing plate (12) is closed to the lower surface thereof. That is. Then, the lid sealing sheet (2) is the container continuum (
The upper surface where the open portions (10) (10) of 1) are open will be coated.

[0016] The lid sealing sheet (2) is as shown in Fig. 1.
Upper PET resin layer (P) and lower PET resin layer (P)
It has a structure in which an aluminum vapor deposited layer (a) is provided between the two, and a hot melt adhesive layer (20) is formed on the back surface of the lower PET resin layer (P). Further, the reinforcing paper (3) attached to the back side of the lid sealing sheet (2) is plain paper having an appropriate thickness, and is cut to match the width of the lid sealing sheet (2). On the back side of the lid seal sheet (2),
As shown in FIG. 3, the reinforcing paper (3) is pasted in a band shape with adhesive (S) between the formation areas of the covering pieces (22) (22). Therefore, on the back side of the lid sealing sheet (2),
As shown in Figures 1 and 2, at least the covering piece (2
2) The back side of the forming area (22) is not attached to the reinforcing paper (3).

In this way, when the reinforcing paper (3) is pasted on the back side of the lid sealing sheet (2) and the strip-shaped material is wound up into a roll, it is processed in the process shown in FIG. 4 to form a continuous container body. (
A lid seal continuum (24) of a certain size that conforms to 1) can be manufactured.

In this manufacturing process, as shown in the figure, a printing section (
In step 4), predetermined printing is applied to the surface of the lid sealing sheet (2) corresponding to the area where the covering pieces (22) (22) are formed, and a first punched part (5) provided so as to follow that, Covering pieces (22) (22)
2) Punch out the chisel. As a result, as shown in FIG. 3, covering pieces (22) (22) are formed within the lid sealing sheet (2). The covering pieces (22) (22) are partially joined, and in this state, they do not fall off from the lid sealing sheet (2).

[0019] Also, the covering pieces (22) (22) of this embodiment
As shown in the same figure, the shape was such that a protruding piece (23) was provided protruding from an annular body corresponding to the size of the bottom surface of the container part (11) of the container continuous body (1).

Next, in the second punching section (6), only the reinforcing paper (3) is punched out in a circular shape in an area larger than the forming area of the covering pieces (22) (22), to form punched pieces (35) (
35). These punched pieces (35) (35) are
Since it is not attached to the back side of the lid sealing sheet (2),
After being punched out, only that part will fall off, as shown in Figure 4. Then, in the cutting section (7), the strip-shaped material whose back surface is covered with reinforcing paper (3) is cut to match the size of the continuous container body (1). and the same number of covering pieces (22) (2) as the container parts (11) (11) in the container series (1).
2) of constant size lid seal continuum (24) with (2)
4) is constructed.

[0021] Then, on the upper surface of the container continuous body (1),
The lid seal continuum (24) (24) is covered, and covering pieces (22) (22) are placed above each container part (11) (11).
Position them so that they are positioned respectively. At the time of this positioning, as shown in FIG.
) and a pair of through holes formed on both sides of the lid seal continuum (24) are penetrated by the pins (N) of the jig (J), each covering piece (22) is attached to each container part (11). matches exactly.

[0022] Then, the covering piece (22) excluding the protruding piece (23)
) (22) is heated to 90 to 150°C to form open parts (10) (10) in the container parts (11) (11).
) The covering pieces (22) (22) are thermally welded to the peripheral edge of the (22). After that, the sheet pieces (24) other than the covering pieces (22) (22)
) is removed, the covering pieces (22) (22) are only partially joined to the lid seal continuum (24) as described above, so that joined part can be easily cut off. The lid seal continuum (2) other than the covering piece (22) (22)
4) can be removed as scrap. As a result, a packaging container in which the open parts (10) (10) of the container parts (11) (11) of the container continuous body (1) are sealed with the covering pieces (22) (22) as shown in FIG. is completed.

[0023] The covering pieces (22) (22)
0) Since it is only thermally welded to the peripheral edge of (10), hold the unwelded projection piece (23) provided on the covering piece (22) (22) and remove it as shown in the figure. By peeling upward, the opening parts (10) (10) can be easily opened. Note that release paper may also be used as the reinforcing paper (3) in the above embodiment. Products using this release paper have sufficient stiffness even if they are thin. In addition, materials used for ordinary labels and seals can be used as is, and the punched pieces (35) (35) are easy to fall off.

Further, in the above embodiment, the back surface of each area where the covering piece (22) is formed is punched out and reinforcing paper (
Although the non-covered area of 3) was formed, the lid seal continuum (24)
In (24), the covering piece (22) (
A rectangular non-covered area may be formed by punching out a rectangular area including the entire forming area of 22).

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an embodiment of the present invention.

[Figure 2] Lid seal sheet (2) covered with reinforcing paper (3)
) is an explanatory diagram.

FIG. 3 is an explanatory diagram of a continuous lid sheet.

FIG. 4 is an explanatory diagram of the manufacturing method.

FIG. 5 is an explanatory diagram when positioning the container continuous body (1) and the lid seal continuous body (24).

FIG. 6 is a perspective view of the packaging container in a completed state.

FIG. 7 is an explanatory diagram of a conventional example.

FIG. 8 is an explanatory diagram of a conventional example.

[Explanation of sign]

1 Container continuum 10 Open part 11 Container part 2 Lid seal 22 Covering piece 3 Reinforcement paper

Claims (2)

[Claims] Claim 1: A covering piece (22) (2) which is a thin sheet whose back side is heat-weldable and which is welded to the welded part.
2) is punched out in accordance with the size, shape, arrangement position, and number of the welded parts, leaving some uncut parts, at least the covering pieces (2)
2) Remove the lid seal sheet (22) from the area other than the planned area
2) A lid seal continuum with reinforcing paper (3) having an appropriate thickness affixed to the back side. 2. A container continuum (1) having a plurality of container parts (11) (11) each having an opening part (10), each of which contains a content, All of the opening parts (10) (10) of this continuous container body (1) are integrally covered with a lid sealing sheet (2) made of a thin sheet, and the covering piece (22) of the lid sealing sheet (2) is (22)
After welding the opening parts (10) and the welded parts on the periphery of each opening part (10), the covering piece (
22) Remove the parts other than (22) and create a container continuum (1)
In the method for manufacturing a packaging container, the lid sealing sheet (2) is divided into each container part (11) (11).
The back side of the lid seal sheet (2) is a sheet that can be thermally welded, and there is a suitable thickness on the back side of the lid sealing sheet (2) other than the area where the covering pieces (22) (22) to be welded to the welded parts are to be punched out in a partially uncut state. It has a structure in which thick reinforcing paper (3) is pasted,
Covering pieces (22) (22) in the lid sealing sheet (2)
The number and arrangement position of the container continuum (1) are matched with those of the opening parts (10) (10) in the container continuum (1), and the positioning means formed on the lid sealing sheet (2) and the container continuum (
Each covering piece (22) (2) is matched with that of 1).
2) is welded to the part to be welded of the container continuous body (1).