JP2014051294A - Lid material and container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lid material which can be efficiently produced while achieving both sterilizability after sealing and visibility of stored objects.SOLUTION: There is provided a lid member 1 which comprises: a film portion 2 having transparency; a seal portion 3 provided on one surface of the film portion 2; and a filter portion 4 mounted on the seal portion 3 so as to cover a part of the film portion 2. The filter portion 4 is mounted to cover two edge parts of the film portion 2 which face each other so as to be continued.

Description

  The present invention relates to a lid member, and more particularly, to a lid member that can be suitably used for a container for sterilizing a stored item, and a container including the lid member.

Conventionally, sanitary material sets in which sanitary materials such as gauze and cotton balls are sealed in containers have been widely used in the medical field. In such a sanitary material set, in order to allow sterilization of the contents in the container after sealing, the container is made of a cover made of sterilized paper or filter material that has gas permeability but does not allow microorganisms or viruses to permeate. May be sealed.
However, when the lid is formed of the above material, it is difficult to visually recognize the contents in the container, and thus there is a problem that it is difficult to find a product error such as an insufficient number of containers in the manufacturing process.

  In relation to this problem, Patent Document 1 describes a cover material in which a through hole is provided in a heat-resistant synthetic resin film and a filter material is attached so as to cover the through hole. If it does in this way, sterilization can be performed after sealing, making the contents visible.

Japanese Utility Model Publication No. 6-50388

However, the cover material described in Patent Document 1 has a problem in that the production efficiency is not good because the filter material must be manufactured one by one on a synthetic resin film.
Although the details will be described later, the inventors of the present invention have discovered a new problem in improving the production efficiency of such a cover material, and have completed a cover material that solves the problem.

An object of this invention is to provide the lid | cover material which can make the sterilization possibility after sealing compatible with the visibility of the accommodation, and can manufacture efficiently.
Another object of the present invention is to provide a container that can be sterilized after sealing and has excellent visibility of the contents.

  A first aspect of the present invention is attached to a transparent film part, a seal part provided on one surface of the film part, and a part of the film part on the seal part. The filter part is a lid member that is attached so as to cover two opposing parts of the peripheral part of the film part.

  The seal portion is preferably made of any one of ethylene vinyl acetate, low density polyethylene, and linear low density polyethylene.

  The film part may have a penetration part in a part covered with the filter part.

  A second aspect of the present invention includes a container body having an accommodation space and an opening, and a lid member of the present invention that is joined to the container body so as to cover the opening and seals the accommodation space. It is a container characterized.

According to the lid member of the present invention, both the sterilization possibility after sealing and the visibility of the contents can be made compatible and can be efficiently manufactured.
Moreover, according to the container of this invention, it can be set as the container which can sterilize after sealing and was excellent in the visibility of the stored item.

It is a perspective view of a container provided with a lid material of one embodiment of the present invention. It is sectional drawing in the AA of FIG. It is a schematic diagram which shows the original fabric for the same cover material to manufacture continuously. It is the elements on larger scale which show the cover material of the modification of this invention.

The lid | cover material and container which concern on one Embodiment of this invention are demonstrated with reference to FIGS. 1-3.
FIG. 1 is a perspective view showing a container 100 of the present embodiment provided with the lid 1 of the present embodiment. The container 100 includes a container main body 51 having an opening 52 and a lid 1 that covers and seals the opening.

The container body 51 is not particularly limited as long as it is formed of a material that does not transmit microorganisms, viruses, or the like, but is preferably manufactured by molding using a resin material. The container main body 51 has an accommodation space inside, and the accommodation space is divided into a plurality of spaces by a partitioning portion 54. The number and mode of the partitioning portions may be set as appropriate according to the number and type of the contents, and the partitioning portions may not be provided.
A flange 53 is provided on the periphery of the opening 52, and the housing space of the container body 51 is sealed by joining the lid member 1 to the flange 53.

  2 is a cross-sectional view taken along line AA in FIG. As shown in FIGS. 1 and 2, the lid 1 includes a transparent film part 2, a seal part 3 provided on one surface of the film part 2, and a filter part provided on the seal part 3. 4 is provided.

The film part 2 is formed of resin or the like, and has a transparency that allows the contents disposed in the accommodation space to be visually recognized when the container body 51 is sealed, and does not transmit microorganisms or viruses. Has properties.
Examples of the material for forming the film part 2 include various resins such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET). The film part 2 may be configured by laminating a plurality of single or plural kinds of resin materials. The film part 3 of the present embodiment has a three-layer configuration in which a PE1 layer (thickness 20 μm) is added to a PET2 layer (thickness 12 μm each).

  The seal portion 3 is for joining the lid member 1 and the flange portion 53 of the container body 51, and the film portion 2 and the filter portion 4, and is softened or melted by being heated to a predetermined temperature or higher. It is comprised so that the one surface of the film part 2 may be covered with the material to do. The seal portion in the present invention is formed of a material having excellent flexibility during heating, among known sealants. For example, ethylene vinyl acetate (EVA), low density polyethylene (LDP), linear low density polyethylene ( LLDP) or the like can be used. From the viewpoint of not impairing the transparency of the film part 2, the seal part 3 is preferably highly transparent.

  The filter unit 4 has a property of transmitting gas and not transmitting microorganisms or viruses, and is formed in a sheet shape or a layer shape. As the material of the filter unit 4, various known materials capable of realizing the above characteristics can be used, and examples thereof include paper, synthetic paper, plastic fiber mixed paper, and nonwoven fabric.

  The filter part 4 is attached to the film part 2 so as to cover and continuously cover two opposing parts of the periphery of the film part 2. In this embodiment, as shown in FIG. 1, in the width direction W <b> 1 of the container body 51 so as to cover an area within a certain distance from the side 2 a located on the near side of the container body 51 in the film part 2. The filter part 4 is arrange | positioned so that the edge parts 2b and 2c which oppose may be covered.

  A perforation (penetrating portion) 21 that penetrates the film portion 2 and the seal portion 3 is formed in a portion of the film portion 2 that is covered with the filter portion 4. Thereby, the gas that has reached the filter unit 4 through the perforation 21 can pass through the filter unit 4 and reach the accommodation space in the container main body 51. The perforations 21 are formed so as to be arranged substantially linearly at a predetermined interval from the end 2b to the end 2c.

  A part of the portion of the lid member 1 to which the filter unit 4 is attached is formed so as to protrude from the flange portion 53 when joined to the container body 51, and a knob used when the user removes the lid member 1 Part 1A.

The lid member 1 formed as described above can be manufactured, for example, by the following procedure.
First, the seal part 3 is formed in a layer on one surface of the film part 2. There is no restriction | limiting in particular about the specific aspect of this process, For example, you may form the film part 2 and the seal | sticker part 3 simultaneously by methods, such as co-extrusion.
Next, in the film part 2 in which the seal part 3 is formed, a perforation 21 is formed in a part that will be covered later by the filter part 4. Further, a part of the film part 2 and the perforation 21 are covered on the seal part 3. Thus, when the filter unit 4 is arranged and the seal portion 3 that overlaps the filter unit 4 is heated to a predetermined temperature, the film unit 2 and the filter unit 4 are joined via the seal unit 3. Thereafter, the lid 1 according to the present embodiment is completed by adjusting the shape of the container main body 51 to be sealed to a predetermined shape by punching or the like so as to have the knob portion 1A.

  In manufacturing the lid member 1, as shown in FIG. 3, first, a seal portion 3 (not shown) is formed on a strip-shaped film portion 2 extending in a predetermined direction A <b> 1, and a perforation 21 extending in a predetermined direction A <b> 1 is continuously formed. The raw fabric 1F of the lid member 1 extending in the predetermined direction A1 may be manufactured in advance by attaching the band-like filter portion 4 extending in the predetermined direction A1. Thereafter, the lid material 1 can be formed by punching the raw fabric 1F into a predetermined shape. If it does in this way, since original fabric 1F can be continuously manufactured at high speed by the well-known roll-to-roll method etc., the cover material 1 can be manufactured in large quantities efficiently.

An example of a procedure for manufacturing a sterilized sanitary material set in which a sanitary material is accommodated in the container 100 using the container main body 51 and the lid material 1 will be described by taking ethylene oxide gas (EOG) sterilization as an example. To do.
First, a sanitary material is placed in the storage space of the container body 51. Next, the lid member 1 is disposed so as to cover the opening 52 of the container main body 51, and the lid member 1 covering the collar part 53 and the collar part 53 is heated to soften or melt the seal part 3. And the container body 51 are joined together to seal the container body 51.
At this time, in the part where the filter unit 4 is attached, the filter unit 4 and the collar part 53 are in contact with each other, but a part of the softened collar part 53 enters a minute unevenness on the surface of the filter part 4. The filter part 4 and the collar part 53 are joined by this mechanism.

In addition, when the cover is formed by attaching the filter part to a part of the film part, the thickness is different between the part where the filter part is attached and the part where the filter part is not attached. When the lid member is joined to the container body, the inventors have clarified that there is a possibility that microorganisms, viruses, or the like may enter from a gap generated between the container body and the lid member due to the step. It was.
However, in the lid material 1 of the present embodiment, the heated seal portion 3 is excellent in flexibility at the time of heating. Therefore, the gap generated between the lid material 1 and the flange portion 53 due to the step is shown in FIG. As described above, the deformed seal portion 3 is preferably filled. Thereby, the sealed state of the container main body 51 is ensured, and it is suitably prevented that microorganisms, viruses, and the like enter from the gap. That is, in the lid material of the present invention, the material and thickness of the seal portion are set so that the gap is surely filled with the seal portion when joining to the container body. For example, the gap can be suitably filled by forming the seal portion 3 with EVA having a high low temperature sealability and a thickness of 35 μm.
Through the steps so far, the unsterilized container 100 in which the sanitary material is accommodated and sealed is completed.

Next, the container 100 is decompressed, and the air in the container body 51 is discharged out of the container 100. Due to the reduced pressure, the air in the container main body 51 is discharged out of the container 100 through the filter part 4 and the perforation 21 of the film part 2.
Subsequently, EOG is injected into the container body 51 while releasing the reduced pressure, and EOG sterilization is performed on the storage space and the sanitary material. Also at this time, EOG is injected into the container body 51 through the filter unit 4 and the perforation 21.
Next, the container 100 is decompressed, and the EOG in the container body 51 is discharged out of the container 100. Then, when decompression is released and air is injected into the container body 51, a sterilized sanitary material set is completed.

As described above, in the container 100 of the present embodiment, since the opening 52 of the accommodation space is sealed with the lid member 1 of the present embodiment, the inside of the container main body 51 passes through the transparent film portion 2. The contents can be easily visually confirmed. Therefore, it is excellent in visibility while being sterilizable after sealing. As a result, it is possible to suitably confirm the shortage or abnormality of the contained items, and to reliably find defective products. In particular, when the contents are sanitary materials, the sanitary materials are more suitable because they are often light, such as gauze and cotton balls, and it is not easy to detect the number shortage by measurement.
As a method for improving the visibility of the contents, it may be possible to make the container body transparent. However, if the lid is opaque, the posture may be changed by turning the container over to confirm the contents. Necessary. In this case, not only is it time-consuming, but the contents may move in the container due to the posture change, which may make it difficult to check for shortages or abnormalities, so it is possible to check the contents without changing the posture. Therefore, the lid material and container of the present invention are excellent.

  Moreover, in the cover material 1 of this embodiment, since the filter part 4 is attached so that the edge parts 2b and 2c which the film part 2 opposes may be continued, manufacturing the original fabric 1F mentioned above is manufactured. Thus, it is possible to provide a lid material that is compatible with both the sterilization capability after sealing and the visibility of the contents while enabling efficient mass production.

  Further, since the film part 2 has a three-layer structure including two PET layers, the rigidity is high. As a result, even when the lid material is manufactured by continuous production through the raw fabric, it is difficult to curl the cut out individual lid material, and a flat lid material can be suitably manufactured in large quantities.

  Furthermore, since the seal portion 3 is formed of a material that is excellent in flexibility during heating, the seal portion 3 can suitably close the gap due to the above-described step when bonded to the container body 51. As a result, it is possible to obtain a lid material that achieves both hermeticity and manufacturing efficiency.

Further, since the knob portion 1A is provided at a portion covered with the filter portion 4, the filter portion 4 is unlikely to remain on the container body 51 side when the lid member 1 is removed and the container 100 is opened. This is due to the following reason.
In general, when the lid member and the container body are joined by heating the sealant such as the seal portion 3 or the like, the joining strength between the filter part and the container body becomes larger than the joining strength between the film part and the filter part. Therefore, if the knob part is provided in a part not covered with the filter part, the film part may be peeled off from the filter part and the filter part may remain in the container body, but the part covered by the filter part 4 When the knob portion 1A is provided, the filter portion 4 is peeled off from the container main body 51 together with the film portion 2, so that the above-described situation hardly occurs.

  Although one embodiment of the present invention has been described above, the technical scope of the present invention is not limited to the above embodiment, and various modifications may be made to each component without departing from the spirit of the present invention. , Can be deleted.

For example, in the lid material of the present invention, the seal portion does not necessarily have to be provided on one entire surface of the film portion, and the position corresponding to the flange portion and the region where the filter portion can be joined to the filter portion with a desired strength. It may be provided.
At this time, the part for joining the film part and the filter part in the seal part has two belt-like regions 3A and 3B arranged in parallel and spaced apart from each other as shown in FIG. 4, for example. It may be formed. If it does in this way, the opening 5 by the film part 2 and the filter part 4 not being joined will be formed in a part of edges 2b and 2c. As a result, since the gas can enter and exit through the opening 5 and the filter part 4 into the container body, it is not necessary to provide a through part in the film part, and the manufacturing process can be simplified.

  Moreover, the filter part should just be continuous covering the two opposing positions among the peripheral parts of a film part, and does not necessarily need to cover other peripheral parts, such as the edge part 2a. Therefore, a filter part may be arrange | positioned so that the film part which is not covered with a filter part may exist on the both sides of the straight line which ties the said two opposing places.

  Furthermore, a filter part may be attached to the surface on the opposite side to the surface joined to a container among film parts. Even if it does in this way, while the gas which passed through the filter part enters a container through a penetration part, while being able to sterilize suitably, continuous manufacture is also easy. However, in this case, since it is necessary to separately form a seal part for joining the filter part in the film part and the manufacturing cost increases, the filter part is attached to the surface to be joined to the container as described above. Is preferred.

  Furthermore, when providing a penetration part in a film part, the aspect is not restricted to the above-mentioned perforation, A circular hole, a long hole, etc. may be sufficient, and there is no restriction | limiting in particular in the shape, number, arrangement | positioning aspect, etc. Note that, regardless of the shape of the penetrating portion, the lid material can be suitably continuously manufactured by forming the penetrating portions side by side in the direction in which the original fabric extends. Here, even though the through portions are formed side by side in the direction in which the original fabric extends in the original fabric, the through portions may not be formed in a straight line in the cut out lid members one by one. is there. For example, since there is only one penetrating material due to the large penetrating part, two or three adjacent penetrating parts arranged in a staggered pattern in the original fabric exist in one lidding material. This is the case. Therefore, in the lid member of the present invention, the through portion does not necessarily have to be formed in a straight line or in parallel with the filter portion, and even in such a case, it can be continuously manufactured efficiently.

  In addition, the lid material of the present invention can be a lid material that can be sterilized other than EOG sterilization, for example, other sterilization methods such as an autoclave, by appropriately selecting materials constituting each part. .

DESCRIPTION OF SYMBOLS 1 Cover material 2 Film part 3 Seal part 4 Filter part 21 Perforation (penetration part)
51 Container Body 52 Opening 100 Container

Claims (4)

A film part having transparency;
A seal portion provided on one surface of the film portion;
On the seal part, a filter part attached so as to cover a part of the film part,
With
The said filter part is attached so that two places which oppose among the peripheral parts of the said film part may be continued.   The lid member according to claim 1, wherein the seal portion is made of any one of ethylene vinyl acetate, low density polyethylene, and linear low density polyethylene.   The said film part has a penetration part in the site | part covered with the said filter part, The cover material of Claim 1 or 2 characterized by the above-mentioned. A container body having a housing space and an opening;
The lid according to any one of claims 1 to 3, which is joined so as to cover the opening and seals the accommodation space;
A container comprising:

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