JP2009046171A - Volatile medicine container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a volatile medicine container which has no possibility of an aromatic component permeating through the container and scattering to outside, shows good sealing property of a lid material to the opening edge of a container body, and keeps the lid material not carelessly damaged regarding the volatile medicine container for storing the volatile medicine such as an aromatic or a deodorant. <P>SOLUTION: The volatile medicine container comprises the container body constituted of a crystalline aromatic polyester, a seal layer constituted of the crystalline aromatic polyester to be sealed on the opening edge part of the container body and two layers of paper layers provided on the outer side of the sealed layer. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a volatile drug container, and more particularly to a volatile drug container for containing a volatile drug such as a fragrance or a deodorant.

  As is well known, as a container for fragrance and deodorant, various materials such as metal, glass, earthenware, or synthetic resin are used, but they are inexpensive and versatile. For the purpose of disposable or the like, those made of synthetic resin are used.

  Among such synthetic resins, a container made of a polyolefin resin such as polyethylene or polypropylene is conventionally used because of its high versatility. However, many of the fragrance components contained in fragrances and deodorants are easily sorbed by the polyolefin resin when the container is made of a polyolefin resin, or containers in which the fragrance component is made of a polyolefin resin. There is a problem that the aromatic component may pass through and be dissipated to the outside and the sealed state may not be maintained.

  In view of the characteristics of transparency, heat resistance, chemical resistance and easy disposal, a container using a polyester resin such as polyethylene terephthalate as a container material has been proposed as a container for fragrance. As an invention relating to a fragrance container using such a polyester resin, for example, a patent application such as the following Patent Document 1 has been filed.

  As described in paragraph [0005] of the specification of Patent Document 1, the invention according to Patent Document 1 “appropriate as a heat sealing layer constituting a sealing lid material for sealing a container made of polyester resin” In the case of polyolefin resins and low molecular weight polyester resins, which are known heat-sealing resins, the interlayer adhesion strength between the base layer and the heat-sealing layer, and the periphery of the container opening, In view of the problem that the heat sealing adhesion (heat sealing) strength of the heat sealing layer is reduced, or in the worst case, it peels off and the contents cannot be kept sealed, in the sealing lid material of the aromatic polyester container, Resin that can be used as a constituent material of the heat sealing layer, and the adhesive strength with the base layer and the heat sealing strength with the peripheral edge of the container opening are not reduced by the aroma component. By finding, it is an object of the present invention to completely seal the fragrance and deodorant. And in order to solve such a subject, the invention which concerns on patent document 1 is a lid | cover material which seals the opening part of an aromatic polyester container, Comprising: It has the heat sealing layer made from an aliphatic polyester resin on the surface. The sealing lid | cover material for aromatic polyester containers characterized by these is provided.

  However, the invention according to Patent Document 1 uses a polylactic acid resin as an aliphatic polyester resin that constitutes a sealing lid for an aromatic polyester container, and the polylactic acid resin is a harmless product that has little impact on the environment. In recent years, it has attracted attention as a decomposable resin, so it is not cheap, and it is not necessarily suitable as a material for a lid for a highly versatile synthetic resin fragrance container for disposable purposes. It is not recognized as a thing.

  On the other hand, patent applications such as the following Patent Document 2 describe problems of polyester containers. That is, as described in paragraph [0005] of the specification of Patent Document 2, “a commonly used aromatic polyester such as polyethylene terephthalate has a high softening point and lacks moldability. In addition, since the aromatic polyester lacks heat-sealability, the volatile drug-permeable sheet cannot be pasted by a heat seal that is generally used. ” is there. And, “the above-mentioned problem is obtained by storing the drug composition in which the volatile drug is supported on a carrier in a plastic molded container having a thickness of 0.1 to 1 mm and bonding the volatile drug permeable sheet to the opening. It tries to solve the point.

  However, in the invention according to Patent Document 2, the thickness of the plastic molded container is limited, and the means disclosed as means for solving the problems such as the heat sealability is, as a result, claim 4 of Patent Document 2. In this case, as described above, “the fragrance component is easily sorbed by the polyolefin resin, or the fragrance component is made of the polyolefin resin”. The problem of passing through the container and dissipating fragrance components to the outside and maintaining a sealed state cannot be solved.

JP 2002-284603 A JP-A-11-35058

  The present invention has been made to solve such problems, and there is no possibility that the fragrance component passes through the container and is dissipated to the outside, and the lid member is sealed to the opening edge of the container body. An object of the present invention is to provide a container for a volatile drug which has good properties and does not cause the lid material to be inadvertently damaged.

  The present invention has been made to solve such a problem, and is composed of a container body made of crystalline aromatic polyester, and made of amorphous aromatic polyester and sealed at the opening edge of the container body. And a lid member having a paper layer provided on the outside of the seal layer. A container for a volatile drug is provided.

  As the crystalline aromatic polyester constituting the container body, crystalline polyethylene terephthalate is mainly used. In addition, amorphous polyethylene terephthalate is mainly used as the amorphous aromatic polyester constituting the sealing layer of the lid.

  In the volatile drug container of the present invention, since the container main body is made of crystalline aromatic polyester as described above, the volatile components of the drug such as fragrance pass through the container main body and are dissipated to the outside. There is no such thing, and the lid is formed with a sealing layer made of amorphous aromatic polyester, so that the sealing layer made of amorphous aromatic polyester is joined to the opening edge of the container body. By sealing as a part, the sealing layer made of amorphous aromatic polyester is suitably sealed to the opening edge of the container body made of crystalline aromatic polyester.

  In addition, the softening point and melting point of the amorphous aromatic polyester provided in the lid are lower than the softening point and melting point of the crystalline aromatic polyester constituting the container body. When sealing to the opening edge of the container body by contacting, if the heating temperature is too low, the opening edge of the container body made of crystalline aromatic polyester may not be sufficiently softened and melted, resulting in poor sealing performance. On the other hand, if the heating temperature is too high, the sealing layer of the lid material made of amorphous aromatic polyester may melt and break, and it is difficult to adjust the heating temperature. Since the paper layer is also provided in addition to the layer, the seal made of amorphous aromatic polyester can be obtained by heating from the outside of the paper layer with the paper layer positioned outside the seal layer. A heater etc. Sarezu, since a possible indirect contact via the paper layer, has the effect that there is no possibility that the sealing layer of the lid is damaged by melting.

  Furthermore, since the cover material is provided with a paper layer, the strength of the cover material is improved, and it is possible to prevent the cover material from being inadvertently damaged when performing the sealing or opening operation. There is an effect that can be done.

  In any case, in the present invention, the container body is composed of crystalline aromatic polyester excellent in moldability, heat resistance, rigidity, and gas barrier properties, and the container body is composed of such crystalline aromatic polyester. In this case, by selecting a cover material composed of two layers of the above-mentioned amorphous aromatic polyester and paper, as a material of the cover material for which a material suitable for sealing properties or the like could not be obtained. Thus, it is possible to provide a container for a volatile drug such as a suitable fragrance.

  As described above, the container for a volatile drug of the present invention includes a container body made of crystalline polyester, a seal layer made of amorphous aromatic polyester and sealed to the opening edge of the container body, And a lid member provided with a paper layer provided outside the seal layer.

  As the crystalline aromatic polyester constituting the container body, crystalline polyethylene terephthalate is mainly used. In addition to polyethylene terephthalate, for example, crystalline polybutylene terephthalate can be used. In addition, amorphous polyethylene terephthalate is mainly used as the amorphous aromatic polyester constituting the sealing layer of the lid. It is also possible to use amorphous polybutylene terephthalate.

Although the kind of paper which comprises the paper layer of a lid | cover material is not specifically limited, The fabric weight of 10-60 g / m < ² > can be used conveniently. If the weight per unit area exceeds 60 g / m ² , the thermal conductivity may decrease, and the sealing performance of the lid against the container body may decrease, whereas if it is less than 10 g / m ² , the paper layer and the sealing layer are laminated. This is because the workability of the two-layer structure may be lowered due to the above, and the paper layer may be accidentally damaged when the paper layer is handled as such. From this viewpoint, more preferably 10 to 50 g / m ^2, further preferably 10 to 40 g / m ^2.

  The sealing layer and the paper layer constituting the lid member are joined by lamination or the like. The lamination is performed, for example, by sticking via an adhesive.

  Embodiments of the present invention will be described more specifically with reference to the drawings. 1 is a front view of a container for a volatile drug according to one embodiment, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along line AA of FIG. As shown in FIGS. 1 to 3, the volatile drug container of the present embodiment includes a container body 1 and a lid member 2 for closing the container body 1.

  The container body 1 has a bottomed cylindrical shape having an opening 3 on the upper surface, has a flat surface formed in a substantially circular shape, and a tapered surface whose side surface is slightly narrower from the upper side to the lower side. Yes. The container body 1 is made of crystalline polyethylene terephthalate. Further, a flange portion 4 protrudes outward from the edge portion of the opening 3 of the container body 1.

The lid member 2 is formed in a substantially circular plane and has a two-layer structure of a paper layer 5 and a seal layer 6 as shown in FIG. In the present embodiment, the paper layer 5 is made of paper having a basis weight of 35 g / m ² . The seal layer 6 is a portion that comes into contact with the flange portion 4 of the container body 1 and is sealed, and is made of amorphous polyethylene terephthalate.

  And when using the container for volatile chemical | medical agents which consists of the above structures, as shown in FIG. 5, the content 8 is accommodated in the container main body 1, and the peripheral part of the cover material 2 is made into the container main body 1. As shown in FIG. The container body 1 is sealed by heat-sealing to the flange portion 4. In the present embodiment, a fragrance is used as the contents 8.

  In this case, the lid member 2 is composed of two layers of a paper layer 5 and a seal layer 6, and the container body is disposed on the lower side of the two layers, that is, on the surface side in contact with the flange portion 4 of the container body 1. Since the sealing layer 6 made of amorphous polyethylene terephthalate made of the same material as the crystalline polyethylene terephthalate constituting 1 is provided, the peripheral portion of the lid 2 is preferably heat-sealed to the flange portion 4 of the container body 1. Will be.

  In particular, since the paper layer 5 is present on the upper side of the lid member 2, when the peripheral portion of the lid member 2 is heat-sealed to the flange portion 4 of the container body 1 by heating, a heater or the like is directly applied to the seal layer 6. Since there is no contact and contact is made indirectly through the paper layer 5, there is no possibility that the sealing layer 6 of the lid material melts and breaks. That is, since the softening point and melting point of the amorphous polyester constituting the sealing layer 6 are lower than the softening point and melting point of the crystalline polyester constituting the container body 1, the paper layer 5 does not exist temporarily, and the sealing layer 6 When the lid member 2 is composed only of the above, when the heating temperature is too high when the heater or the like is contacted from the upper side of the lid member 2 and sealed to the flange portion 4 of the container body 1, When the heating temperature is lowered to avoid this, the surface of the flange portion 4 of the container body 1 made of crystalline polyester is not sufficiently softened and melted. However, there is a conflicting problem that the sealing performance may be deteriorated. However, as described above, the heater or the like indirectly contacts the sealing layer 6 through the paper layer 5, so that the sealing layer of the lid member May melt and break Without and sealability there is an effect that does not become defective.

  In addition, since the lid 2 is provided with the paper layer 5, the entire lid 2 is lumped and has good strength, and the lid 2 is not damaged by the internal pressure of the container body 1. That is, since the fragrance is contained in the container body 1, the internal pressure of the container body 1 gradually increases as the solvent contained in the fragrance is volatilized. As a result, the strength of the lid 2 is increased. However, in this embodiment, since the lid 2 is provided with the paper layer 5, such damage due to the increase in internal pressure is suitable. It can be prevented.

  Next, when opening the container, as shown in FIGS. 6 and 7, a part of the lid member 2 is broken to form the discharge hole 7. The volatile component of the fragrance contained in the container body 1 is gradually released from the discharge hole 7 formed in this way. In this case, since the discharge hole 7 is formed by damaging only a part of the lid member 2, the volatile component of the fragrance is not released all at once, and gradually from the discharge hole 7. Since it is released, the sustained release property of the container is maintained.

  On the other hand, the lid member 2 is composed of two layers, a paper layer 5 and a seal layer 6. When the heater or the like is brought into contact with the lid member 2, the upper side of the seal layer 6 is protected by the paper layer 5 and the heater or the like is sealed. Since it does not directly contact the layer 6, it can be heat-sealed at a certain temperature, and as a result, the peripheral portion of the lid member 2 is not inadvertently peeled off from the flange portion 4 of the container body 1. A part other than the discharge hole 7 does not open carelessly.

In the above-described embodiment, the container body 1 is formed in a bottomed cylindrical shape whose side surface is slightly tapered from the upper side to the lower side, but the shape of the container body 1 is the same as that of the embodiment. It is not limited to a form, For example, you may form in the bottomed cylindrical shape with a straight side surface, The shape does not ask | require. Further, the planar shape of the container body 1 is not limited to the substantially planar shape of the embodiment, and may be a substantially rectangular shape, for example, and the shape is not limited.

  In the embodiment, the container body 1 is made of crystalline polyethylene terephthalate. However, the material of the container body 1 is not limited to the embodiment, and is made of, for example, crystalline polybutylene terephthalate. May be. In short, it is sufficient if it is made of a crystalline aromatic polyester resin.

  Moreover, in the said embodiment, the cover material 2 was comprised by two layers, the paper layer 5 and the sealing layer 6, and the sealing layer 6 was comprised by the amorphous polyethylene terephthalate, but the material of the sealing layer 6 is this For example, it may be composed of amorphous polybutylene terephthalate.

  As crystalline or amorphous aromatic polyester resins other than those described above, those containing aromatic dicarboxylic acids such as isophthalic acid and naphthalenedicarboxylic acid can be used as the dicarboxylic acid component that is a constituent monomer of the polyester. . For example, polyethylene naphthalate.

  Moreover, it is not an essential condition for the present invention to form the flange portion 4 at the edge of the opening 3 of the container body 1. In short, it is only necessary that the peripheral edge of the lid member 2 is heat sealed to the edge of the opening 3 of the container body 1. Furthermore, in the said embodiment, although the cover material 2 was formed in planar substantially circular shape, the shape of the lid material 2 is not limited to this embodiment, For example, a planar substantially rectangular shape may be sufficient. The shape does not matter.

  In addition to the two layers of the sealing layer 6 and the paper layer 5 made of an amorphous polyester resin, the lid material 2 is laminated with a synthetic resin film made of another material by coextrusion or the like to have a three-layer structure. It is also possible.

  Furthermore, the molding method of the container body 1 is not limited, but in the present invention, vacuum forming, pressure forming, vacuum pressure forming, etc. are mainly used. More specifically, the container body 1 is obtained by first forming a synthetic resin as a raw material into a sheet shape and then performing secondary molding by vacuum molding, pressure molding, vacuum pressure molding or the like.

  Furthermore, in the above-described embodiment, the case where the fragrance is used as the volatile drug has been described. However, the type of the volatile drug is not limited to the embodiment, and for example, a deodorant, an antibacterial agent, an insect repellent, etc. It can also be used.

  In addition to the heat seal of the above embodiment, an impulse seal, a high-frequency seal, an ultrasonic seal, or the like can be used as a sealing means between the container body 1 and the lid member 2.

In the present invention, the crystalline aromatic polyester is an aromatic polyester that clearly shows an exothermic peak derived from crystallization or an endothermic peak derived from crystal melting as measured by a differential scanning calorimeter (DSC). The amorphous aromatic polyester is an aromatic polyester having no clear peak as described above, as measured by DSC.
In general, a crystalline aromatic polyester has a crystallinity of more than 10%, and an amorphous aromatic polyester has a crystallinity of 10% or less.

Here, the measurement of crystallinity is performed as follows, for example. That is, using the DSC as described above, the heat of crystallization (ΔCr) and the heat of fusion (ΔH) are measured at a scan rate of 10 ° C./min, and the crystallinity is calculated by the following equation. Here, the complete crystal melting energy of polyethylene terephthalate (PET) is 136.1 (J / g) (HM Starkweather, et.al; J. Polym. Sci., Phys., Ed. 21, 295, (1983) ))), The crystallinity is
Crystallinity = (ΔH (J / g) −ΔCr (J / g)) / 136.1 (J / g)
Can be obtained.

  The index of crystallinity of the aromatic polyester is represented by the ratio between the softening point and the highest endothermic peak temperature measured by a differential scanning calorimeter, that is, the crystallinity index defined by the softening point / the highest endothermic peak temperature. Generally, when this value exceeds 1.5, the resin is amorphous, and when it is less than 0.6, the crystallinity is low and there are many amorphous portions. Therefore, the aromatic crystalline polyester generally has a crystallinity index of 0.6 to 1.5. The crystallinity of the resin can be adjusted by the type and ratio of the raw material monomers, production conditions (for example, reaction temperature, reaction time, cooling rate) and the like. The maximum peak temperature of endotherm refers to the peak temperature on the highest temperature side among the observed endothermic peaks. When the maximum peak temperature is within 20 ° C. from the softening point, the melting point is set, and the peak with a difference from the softening point exceeding 20 ° C. is a peak due to glass transition.

The front view of the container for volatile chemical | medical agents of one Embodiment. FIG. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The principal part expanded sectional view which shows the structure of a cover material. Sectional drawing of the state which accommodated the fragrance | flavor in the container. The front view of the container at the time of partial opening. Sectional drawing of the container at the time of opening.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Container main body 2 ... Cover material 3 ... Opening part 5 ... Paper layer 6 ... Sealing layer

Claims (3)

A container body (1) made of crystalline aromatic polyester, a seal layer (6) made of amorphous aromatic polyester and sealed at the opening edge of the container body (1), and the seal layer A container for volatile medicine, comprising: a lid member (2) having a paper layer (5) provided outside (6). The container for volatile chemicals according to claim 1, wherein the crystalline aromatic polyester constituting the container body (1) is crystalline polyethylene terephthalate. The container for volatile chemicals according to claim 1 or 2, wherein the amorphous aromatic polyester constituting the sealing layer (6) is amorphous polyethylene terephthalate.

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