JP2011042371A - Ptp package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a PTP (pres through packaging) package which can decrease an oxygen concentration in a pocket part and in which there exists no possibility of deteriorating an article to be stored such as a medicine for a long time. <P>SOLUTION: The PTP package 1 is characterized in that the PTP package 1 includes: a bottom material 2 having the pocket part 4 for storing an article to be stored; and a lid material 3 covering the pocket part 4, and both or either one of the bottom material 2 and the lid material 3 are formed of a sheet material equipped with an oxygen absorbing layer containing an oxygen absorbing agent. In this PTP package 1, the oxygen absorbing agent absorbs oxygen in the pocket part 4 to be able to decrease the oxygen concentration in the pocket part 4. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a PTP (press-through package) package suitable for packaging drugs such as tablets and capsules.

The PTP package is widely used as a package for drugs such as tablets and capsules and foods such as confectionery.
For example, a PTP package is formed by forming a concave pocket portion in a plastic sheet made of vinyl chloride (PVC) and the like, and using this sheet as a bottom material to store drugs and the like, and a lid made of aluminum foil or the like. It can be produced by covering the pocket part and heat-sealing it on a flat part other than the pocket part.
In such a PTP package, when the pocket portion is pushed with a fingertip, the cover material at that portion is broken and the stored item can be easily taken out.

It is preferable that the PTP package does not allow moisture or oxygen to permeate so that the quality of the stored items can be maintained for a long period of time. For this reason, what laminated | stacked the aluminum foil etc. which do not permeate | transmit moisture and air to the bottom material and the cover material is produced.
However, even if aluminum foil or the like is laminated on the bottom or lid, moisture or oxygen may enter from the end face of the seal portion and permeate to the pocket as time passes. It was.
Therefore, a PTP package made of polychlorotrifluoroethylene (PCTFE) that does not allow moisture to permeate through the seal layer has been developed to prevent moisture from penetrating into the pocket portion (see Patent Document 1 below).

Special table 2009-511310 gazette

The PTP package of Patent Document 1 can prevent moisture permeation, but has not been considered for permeation of oxygen and the like.
Recently, drugs that are easily altered by oxygen have been developed, and it is preferable that there is no oxygen in the pocket as much as possible.

  Then, the objective of this invention is providing the PTP package which can reduce the oxygen concentration in a pocket part.

  The PTP package of the present invention is a PTP package including a bottom member having a pocket portion for storing a stored item and a lid member covering the pocket portion. The sheet material is provided with an oxygen absorbing layer containing an oxygen absorbent.

  In the PTP package of the present invention, since the bottom material and / or the cover material is formed of a sheet material having an oxygen absorbing layer containing an oxygen absorbent, the oxygen absorbent absorbs oxygen in the pocket portion. In addition, the oxygen concentration in the pocket portion can be reduced, and the contents such as medicines are not altered for a long time.

It is the perspective view which showed the PTP package of one Embodiment of this invention. It is a cross-sectional view of the PTP package of FIG. It is sectional drawing which showed typically an example of the sheet material used for the bottom material of the PTP package of FIG. It is sectional drawing which showed typically an example of the sheet material used for the cover material of the PTP package of FIG. It is the partial expanded sectional view of the peripheral part vicinity which showed an example of the conventional PTP package.

  Hereinafter, the present invention will be described based on an embodiment of a PTP package. However, the present invention is not limited to this embodiment.

  As shown in FIG. 1 or 2, the PTP package 1 according to an embodiment of the present invention includes a bottom material 2 and a lid material 3, and both or either the bottom material 2 and the lid material 3. One of them is formed of a sheet material provided with an oxygen absorbing layer containing an oxygen absorbent.

  The bottom material 2 is formed by forming a circular concave pocket portion 4 for accommodating an article such as a medicine 5 on a rectangular sheet material by vacuum forming or the like.

  The bottom material 2 can be formed from a sheet material provided with an oxygen absorption layer, a resin film, an aluminum layer, or the like, or can be formed only from a resin film. Furthermore, a moisture absorbing layer such as a polychlorotrifluoroethylene film can be provided. When both the aluminum layer and the oxygen absorption layer are provided, the oxygen absorption layer is formed so as to be located inside the aluminum layer. The thickness of the bottom material 2 is preferably 120 μm to 220 μm, particularly 130 μm to 200 μm.

The oxygen absorption layer is a layer made of a resin containing an oxygen absorbent, and contains an oxygen absorbent in a resin such as polypropylene (PP), polyethylene (PE), ethylene-vinyl alcohol copolymer resin (EVOH), for example. It can be formed from the film made.
Examples of the oxygen absorbent include reduced iron and sulfites such as sodium sulfite, ethylenically unsaturated hydrocarbons such as ascorbic acid, MXD6 nylon, and polybutadiene.
The oxygen absorber is preferably contained in the oxygen absorbing layer in an amount of 5 to 30% by weight, particularly 10 to 20% by weight.
A film containing an oxygen absorbent in a resin can be produced, for example, by kneading an oxygen absorbent into a resin, pelletizing it, and extruding it.

  As the resin film, a film conventionally used for a PTP package can be used. For example, biaxially stretched nylon, unstretched nylon, polyethylene terephthalate (PET) film, polypropylene (PP) film, polyethylene (PE) A film or the like can be used.

  The aluminum layer can be formed by evaporating aluminum on a resin film or laminating aluminum foil.

As an example of the sheet material used for the bottom material 2, as shown in FIG. 3, from the outside, a nylon layer 21 formed of a nylon film, an aluminum layer 22 formed of an aluminum foil, a polyethylene layer 23 formed of a polyethylene film, polyethylene A layer in which an oxygen absorbing layer 24 formed of a film containing reduced iron and a polyethylene layer 25 formed of a polyethylene film are sequentially laminated can be used.
The polyethylene layer 23 / oxygen absorbing layer 24 / polyethylene layer 25 can be produced by multilayer coextrusion. Further, polypropylene may be used instead of polyethylene. In order to adjust the oxygen absorption rate, EVOH such as Eval (trade name) can be used, and a multilayer coextruded film of polyethylene / EVOH + oxygen absorber / polyethylene can also be used. In this case, polypropylene may be used instead of polyethylene. In order to delay the oxygen absorption rate, a multilayer coextruded film of EVOH / EVOH + oxygen absorber / EVOH can be used. These layer configurations depend on the balance with the packaged medicine and other contained items.

  If the innermost layer of the bottom material 2 is an oxygen absorbing layer, it may react with the drug 5 accommodated in the pocket 4, so the innermost layer is composed of a drug accommodated in a polyethylene film, a polypropylene film, a polyvinyl chloride film or the like. It is preferable to use a film that does not react and can be heat sealed.

  The lid member 3 is formed of a rectangular sheet material, and is attached to the upper surface of the bottom member 2 other than the pocket portion 4 with a heat seal or an adhesive to cover the pocket portion 6.

  The lid 3 can be formed from a sheet material provided with an oxygen absorption layer, a resin film, an aluminum layer, etc., can be formed of only a resin film, or can be a single layer of an aluminum layer. Furthermore, a moisture absorbing layer such as a polychlorotrifluoroethylene film can be provided. When both the aluminum layer and the oxygen absorption layer are provided, the oxygen absorption layer is formed so as to be located inside the aluminum layer. The thickness of the lid 3 is preferably 20 μm to 40 μm, more preferably 22 μm to 30 μm.

The oxygen absorbing layer is a layer made of a resin containing an oxygen absorbent, and contains an oxygen absorbing material in a resin such as polypropylene (PP), polyethylene (PE), ethylene-vinyl alcohol copolymer resin (EVOH), for example. It can be formed from the film made.
Examples of the oxygen absorbent include reduced iron and sulfites such as sodium sulfite, ethylenically unsaturated hydrocarbons such as ascorbic acid, MXD6 nylon, and polybutadiene.
The oxygen absorber is preferably contained in the oxygen absorbing layer in an amount of 5 to 30% by weight, particularly 10 to 20% by weight.
A film containing an oxygen absorbent in a resin can be produced, for example, by kneading an oxygen absorbent into a resin, pelletizing it, and extruding it.

  As the resin film, a film conventionally used for a PTP package can be used. For example, biaxially stretched nylon, unstretched nylon, polyethylene terephthalate (PET) film, polypropylene (PP) film, polyethylene (PE) A film or the like can be used.

  The aluminum layer can be formed by evaporating aluminum on a resin film or laminating aluminum foil.

  As an example of the sheet material used for the lid member 3, as shown in FIG. 4, from the outside, an aluminum layer 31 formed of an aluminum foil, a polyethylene film 32, and an oxygen absorbing layer formed of a film containing reduced iron in polyethylene. 33 and a polyethylene film 34 laminated in this order can be used.

  If the innermost layer of the lid 3 is an oxygen absorbing layer, it may react with the drug 5 accommodated in the pocket portion 4, and therefore the innermost layer is composed of a drug contained in a polyethylene film, polypropylene film, polyvinyl chloride film or the like. It is preferable to use a film that does not react and can be heat sealed.

  The PTP package 1 can absorb oxygen in the pocket portion 4 because either or both of the bottom material 2 and the lid material 3 are formed of a sheet material including an oxygen absorbing layer containing an oxygen absorbent. The oxygen concentration in the pocket portion 4 can be reduced. Therefore, the medicine accommodated in the pocket portion 4 can be stored for a long time without deterioration.

1 PTP package 2 Bottom material 3 Cover material 4 Pocket part

Claims (3)

  In a PTP packaging body including a bottom material having a pocket portion for storing the stored items and a lid material covering the pocket portion, the bottom material and / or the lid material includes an oxygen absorbent. A PTP package formed of a sheet material provided with an oxygen absorbing layer.   The PTP package according to claim 1, wherein the sheet material includes an aluminum layer outside the oxygen absorption layer.   The PTP package according to claim 1 or 2, wherein the sheet material includes a layer made of any one of polyethylene, polypropylene, and polyvinyl chloride in the innermost layer.

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