JP2007223654A - Laminated shading film with indicator, and external bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an external bag capable of preventing oxidization and photo-deterioration of a substance within a primary container and allowing confirmation of an internal state of the primary container from outside, or a packaging material capable of easily making the external bag. <P>SOLUTION: This laminated film has at least an oxygen barrier layer, a light shielding layer and a heat fusion layer and the laminated light shielding film having an indicator. The light shielding layer is a vapor deposited aluminum film with the part on which aluminum is not vapor deposited, an indicator is arranged at the part without the aluminum vapor deposition layer, and the film is used for making an external bag for packaging a primary container filled with easy-oxidization substance and photo-deterioration substance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an outer bag for packaging the primary container and a packaging material used for making the outer bag in order to prevent oxidation and photodegradation of substances in the primary container.

  In recent years, infusion bags filled with relatively large volumes of liquid agents have been filled into flexible plastic primary containers from the viewpoints of good handling (handling), weight reduction of infusion bags, volume reduction of garbage, and the like. (See, for example, Patent Document 1). Drugs such as amino acid solution and sugar / electrolyte solution filled in the infusion bag are remarkably easily altered by oxygen. Furthermore, since the drug is directly injected into the body, an additive-free plastic container is used as the primary container. In many cases, there is almost no oxygen barrier property. Therefore, if the infusion bag is left in the atmosphere, oxygen in the atmosphere permeates the infusion bag and changes the drug over time. Therefore, in recent years, secondary packaging of an infusion bag with a packaging material having a high oxygen barrier property has been performed.

  More recently, in order to prevent forgetting to mix vitamins immediately before use, as shown in FIG. 2, a three-chamber structure (1 room: amino acids, 2 rooms: sugar / electrolyte, 3 rooms: vitamins) is provided. In this case, since vitamins are filled in the bag, light shielding properties are required in addition to the oxygen barrier property.

  Conventionally, in order to satisfy oxygen barrier properties, plastic films coated with PVDC (polyvinylidene chloride), EVOH (ethylene-vinyl alcohol copolymer) films, PVA (polyvinyl alcohol) films, aluminum oxide, silicon oxide, etc. Laminated packaging materials using a vapor-deposited PET (polyethylene terephthalate) film, a stretched nylon film vapor-deposited with aluminum oxide or silicon oxide, an EVOH layer, a barrier nylon having an MXD6 nylon layer as an intermediate layer, etc. are widely used. . Furthermore, in order to satisfy light-shielding properties, an aluminum foil, a PET (polyethylene terephthalate) film deposited with aluminum, or a stretched nylon film deposited with aluminum is used (for example, see Patent Document 2).

  Usually, a bag filled with a high-calorie infusion solution consisting of amino acids, sugars, and electrolytes is placed in the above-mentioned infusion bag, and further packed and transported in cardboard. Tablet holes that may cause pinholes in the infusion bag due to vibration during the transportation process, and in order to detect the generated pinholes and guarantee the quality of the contents A paper-type oxygen indicator was used. However, since the three-chamber back-type exterior bag pre-filled with vitamins needs to be light-shielded, the color change cannot be confirmed from the outside, and the exterior bag must be opened and confirmed.

  Thus, the conventional outer bag of the infusion pack to which light-shielding property is imparted has not been provided with an oxygen indicator (see, for example, Patent Document 2).

On the other hand, the conventional packaging material with an oxygen indicator was used for applications that do not require light-shielding properties (see, for example, Patent Document 3 or 4).
JP 10-314272 A JP 2004-50605 A JP 2001-192592 A JP 2003-335380 A

  The present invention has been made in view of such background art, and prevents an oxidation and photodegradation of a substance in a primary container, and an exterior bag in which an internal state can be confirmed from the outside, or an exterior bag thereof. It is an object to provide a packaging material that can be easily produced.

In order to achieve the above object in the present invention, first, in the invention of claim 1,
A laminated film having at least an oxygen barrier layer, a light shielding layer, and a heat fusion layer,
The light shielding layer is a vapor-deposited aluminum film having an aluminum non-deposited portion, and an indicator is provided on the aluminum non-deposited portion.
It is used as a laminated light-shielding film with an indicator, which is used for preparing an outer bag for packaging a primary container filled with an easily oxidizable substance and a photodegradable substance.

In the invention of claim 2,
According to the gas permeability test method for plastic films and sheets according to JIS K 7126, the measured oxygen permeability at a temperature of 20 ° C. and a humidity of 65% RH is 5.0 ml / m ² / day / MPa or less. The laminated light-shielding film with an indicator according to claim 1, wherein the total light transmittance of the portion having s is 1% or less.

In the invention of claim 3,
When the outer bag is made, the aluminum non-deposited portion provided with the indicator is not more than 1% of the outer bag surface area and is not close to the place filled with the photodegradable material of the primary container packed with the outer bag. It is set as the laminated light shielding film with an indicator of any one of Claim 1 or 2 characterized by these.

In the invention of claim 4,
The laminated light-shielding film with an indicator according to any one of claims 1 to 3, wherein the aluminum non-deposited portion is provided using pasta processing or celite processing.

In the invention of claim 5,
The oxygen barrier layer is a transparent vapor-deposited film on which alumina or silicon oxide is vapor-deposited, or a coextruded film comprising a nylon resin layer, an ethylene-vinyl alcohol copolymer and a nylon resin layer, a nylon resin layer and MXD nylon The laminated light-shielding film with an indicator according to any one of claims 1 to 4, which is a barrier nylon film such as a coextruded film comprising a layer and a nylon resin layer.

In the invention of claim 6,
The laminated light-shielding film with an indicator according to any one of claims 1 to 5, wherein the primary container is an infusion bag filled with amino acids, sugar / electrolyte, and vitamins. It is a thing.

In the invention of claim 7,
It is set as the exterior bag created using the laminated light shielding film with an indicator of any one of Claims 1-6.

  The inventions according to claims 1 to 6 are equipped with an indicator that prevents oxidation and photodegradation of a substance in the primary container, and that can easily create an outer bag in which the state of the inside can be confirmed from the outside with an attached indicator. There is an effect that a laminated light-shielding film can be provided.

  The invention of claim 7 has the effect of preventing the oxidation and photodegradation of the substance in the primary container and providing an exterior bag in which the internal state can be confirmed from the outside by an attached indicator.

  Accordingly, the present invention provides a primary container filled with contents that easily deteriorate in quality due to the ingress of oxygen or light in the fields of medical / pharmaceuticals, foods, etc., in order to prevent the deterioration of the substance. It can be used for exterior bags that can be identified from the outside by the change in the color of the attached oxygen indicator, indicating that oxygen has entered due to the occurrence of pinholes in the packaging process and poor sealing during packaging. In particular, it is useful as an outer bag for a large volume infusion bag of 500 ml to 2000 ml containing sugar / electrolyte, amino acids and vitamins divided into three chambers.

  The best mode for carrying out the present invention will be specifically described below.

  As shown in FIG. 1, the laminated light-shielding film with an indicator of the present invention is, in order from the outermost layer when an exterior bag is made using this laminated light-shielding film, (A) a printing base material layer, (B) An anchor coat layer, (C) a polyethylene layer, (D) an oxygen barrier layer, (E) an adhesive layer, (F) a light shielding layer, (E) an adhesive layer, and (G) a heat fusion layer. However, as will be described later, (F) the light shielding layer has a portion from which an aluminum thin film giving light shielding properties is removed, and an indicator such as oxygen is provided in this portion (not shown). Further, as long as the oxygen barrier property and the light shielding property are satisfied, the (A) printing substrate layer, (B) anchor coat layer, and (C) polyethylene layer may be omitted.

  (A) The printing substrate layer is not limited as long as it is a printable plastic film, and includes a polyethylene terephthalate (PET) film, a stretched nylon film, a stretched polypropylene film, and the like, and the thickness is preferably about 12 to 40 μm. If the pinhole resistance is not taken into consideration, the printing base material layer may be omitted.

  (B) The anchor coat layer is not limited as long as it is a one-component or two-component curable anchor coating agent, and the solid content is preferably 15% or less and the thickness is preferably 3 μm or less.

(C) The polyethylene layer is not limited as long as it is a polyethylene resin comprising 0.915 to 0.930 g / cm ^3, and an additive-free resin is desirable if the thickness can be 30 μm or less.

(D) The oxygen barrier layer is an oxygen which makes the oxygen permeability of the laminated light-shielding film with an indicator of the present invention not more than 5.0 ml / m ² / day / MPa (conforming to JIS K7126, temperature 20 ° C., humidity 65% RH) or less. If it is a barrier film, there will be no restriction | limiting, and it is desirable that there exists an easy-adhesion process like a corona treatment in the front and back. If the oxygen permeability is larger than this value, the amino acid may deteriorate during storage, and the inner solution may be yellowed or precipitated.

  Examples of the oxygen barrier film include a transparent vapor-deposited film on which alumina or silicon oxide is vapor-deposited, a co-extruded film composed of a nylon resin layer, an ethylene-vinyl alcohol copolymer and a nylon resin layer, or a nylon resin layer and an MXD nylon layer. And a barrier nylon film such as a coextruded film made of a nylon resin layer.

  (E) The adhesive layer is not limited as long as it is a two-component curable urethane adhesive, and the solid content is preferably 40% or less and the thickness is preferably 5 μm or less.

  (F) The light shielding layer is not limited as long as it is a plastic film vapor-deposited on aluminum, and the film thickness of aluminum vapor deposition is preferably 50 nm or more. This is in order to satisfy the total light transmittance of 1% or less, and in the case of an aluminum deposited film thickness of less than 50 nm, there is a possibility that an effective amount of vitamin cannot be put into the body during the storage period. In consideration of dry lamination, an easy adhesion treatment such as a corona treatment is necessary on both sides.

  A protective layer is provided on the aluminum vapor-deposited film, and the non-protective layer is washed with an aliquot solution and partially coated with the pasta that allows the aluminum vapor-deposited layer to be partially removed. By using a celite process that can remove aluminum deposition by rinsing only a part with a solution, an aluminum vapor-deposited film in which aluminum vapor deposition is partially removed can be obtained.

  By painting an oxygen indicator consisting of a coloring agent such as methylene blue and a reducing agent such as ascorbic acid, a temperature indicator, a carbon dioxide gas indicator, a gas indicator, etc. that are already on the market with a gravure printing machine, A packaging material with an indicator that can recognize the internal environment from the outside while satisfying the light shielding property can be obtained. When the aluminum non-deposited portion is larger than 1% of the exterior surface area, the content may be photodegraded even if it is provided at a position not close to the vitamin portion. It is possible to obtain a packaging material with less light deterioration by providing a UV cut ink or a color ink such as yellow on the aluminum non-deposited portion. Even if aluminum deposition is partially removed, there is no problem because the oxygen barrier properties are provided by different oxygen barrier layers (D).

  (G) The heat-sealable layer is not limited as long as it is a thermoplastic polyolefin that can be sealed by being melted by heat. In consideration of the strength when a heavy article is packaged, linear low density polyethylene (LLDPE) is desirable. The thickness is preferably about 40 to 150 μm.

  Examples of the present invention and comparative examples will be specifically described below.

  First, a list of brands of products used as layers constituting examples of the present invention or comparative examples is shown below.

  (A) Printing base material layer (30 μm): biaxially stretched polypropylene, manufactured by Tosero Co., Ltd., U1.

  (B) Anchor coat layer (1 μm): A3210, A-3075, solid content 5%, manufactured by Mitsui Takeda Chemical Co., Ltd.

  (C) Polyethylene layer (15μ): manufactured by Nippon Polyethylene Co., Ltd., LC605Y.

  (D) Oxygen barrier layer (25μ): barrier nylon film, Gunze Co., Ltd., HP2.

  (E) Adhesive layer (3μ): manufactured by Mitsui Takeda Chemical Co., Ltd., A-525, A-52, solid content 30%.

  (F-1) Light-shielding layer (12 μm): Aluminum vapor-deposited PET, manufactured by Oike Industry Co., Ltd., MU-V8, aluminum film thickness 80 nm.

  (F-2) Light shielding layer (15 μm): Aluminum vapor deposition ONY, manufactured by Oike Industry Co., Ltd., BCU, aluminum film thickness 60 nm.

  (F-3) Light-shielding layer (12μ): Aluminum vapor-deposited PET, manufactured by Toppan Printing Co., Ltd., custom-made product, aluminum film thickness 40 nm.

  (G) Thermal fusion layer (60μ): metallocene LLDPE, manufactured by Tamapoli Co., Ltd., SE620L.

[Example 1]
The layer structure of the laminated light-shielding film of Example 1 is
(A) / (B) / (C) / (D) / (E) / (F-1) / (E) / (G)
It is.

[Example 2]
The layer structure of the laminated light-shielding film of Example 2 is
(A) / (B) / (C) / (D) / (E) / (F-2) / (E) / (G)
It is.

[Comparative Example 1]
The layer structure of the laminated light-shielding film of Comparative Example 1 is
(A) / (B) / (C) / (D) / (E) / (F-3) / (E) / (G)
It is.

[Comparative Example 2]
The layer structure of the laminated light-shielding film of Comparative Example 2 is
(A) / (E) / (F-1) / (E) / (G)
It is.

  In order to evaluate the light shielding properties by performing a bending test to evaluate the pinhole resistance in the following Experiments 1 to 3 for the laminated light shielding films of Examples 1 and 2 and Comparative Examples 1 and 2, respectively. The total light transmittance was measured, and the oxygen permeability was measured to evaluate the oxygen barrier property.

<Experiment 1>
* Flex test specimen size: 205mm x 290mm
Bending condition: 440 degrees twist x 3.5 inch straight travel + 2.5 inch straight travel Method: Reciprocated 2000 times in an environment of 5 ° C., and the number of pinholes was counted (when the number of specimens is N, the total number of N = 2) .

<Experiment 2>
* Measurement instrument for total light transmittance: SZ-Σ80 (manufactured by Nippon Denshoku Industries Co., Ltd.)
Method: The total light transmittance was measured with the measuring instrument.

<Experiment 3>
* Oxygen permeability measuring and measuring machine: OXTRAN (manufactured by MOCON)
Measurement conditions: temperature 20 ° C., humidity 65% RH
Method: According to the gas permeability test method for plastic films and sheets in accordance with JIS K 7126, the oxygen permeability was measured with the above-mentioned measuring device and measurement conditions.

  Table 1 below shows the results obtained by Experiments 1 to 3 for the laminated light-shielding films of Examples 1-2 and Comparative Examples 1-2.

上記結果から、比較例１は遮光性が実施例１〜２及び比較例２よりも悪く、内容物の光劣化が進行する。このことから、全光線透過率を１％以下にするために、遮光層として用いるアルミ蒸着フィルムは、そのアルミの膜厚を５０ｍｍ以上にする必要があることが分かる。また、比較例２は遮光性は良好だが、実施例１〜２及び比較例１よりも、耐ピンホール性が劣り、且つ酸素バリア性が悪いことから内容物の酸化劣化が進行する。このことから、実施例１〜２及び比較例１でポリエチレン層に用いた商品は耐ピンホール性に有効であり、また、実施例１〜２及び比較例１で酸素バリア層に用いた商品は酸素バリア性に有効であることが分かる。

From the said result, the light-shielding property of the comparative example 1 is worse than Examples 1-2 and the comparative example 2, and the photodegradation of the content advances. From this, it can be seen that the aluminum vapor deposition film used as the light shielding layer needs to have a thickness of 50 mm or more in order to make the total light transmittance 1% or less. Moreover, although the comparative example 2 has favorable light-shielding property, since the pinhole-proof property is inferior to Examples 1-2 and the comparative example 1, and oxygen barrier property is bad, the oxidative degradation of the content advances. From this, the product used for the polyethylene layer in Examples 1-2 and Comparative Example 1 is effective for pinhole resistance, and the product used for the oxygen barrier layer in Examples 1-2 and Comparative Example 1 is It turns out that it is effective for oxygen barrier property.

[Example 3]
The layer structure of the laminated light-shielding film with an indicator in Example 3 is as follows:
(D) / (E) / printing layer / (F′-1) / (E) / (G)
It is. Here, (F′-1) is (F-1) a light shielding layer having an aluminum non-deposited portion, and an oxygen indicator ink composed of methylene blue and L-ascorbic acid is applied to the aluminum non-deposited portion. The oxygen indicator is attached by printing by gravure printing. However, the undeposited portion of aluminum has an undeposited area ratio of about 0.3% on the surface of the four-pack pouch when a four-pack pouch (285 mm × 340 mm) described later is prepared.

[Comparative Example 3]
The layer structure of the laminated light-shielding film with an indicator of Comparative Example 3 is
(D) / (E) / printing layer / (F ″ -1) / (E) / (G)
It is. Here, (F ″ -1) is (F-1) a light shielding layer having an aluminum non-deposited portion, and an oxygen indicator ink made of methylene blue and L-ascorbic acid is applied to the aluminum non-deposited portion. The oxygen indicator is attached by printing by gravure printing, except that the undeposited portion of aluminum is formed on the surface of the four-pack pouch when a four-pack pouch (285 mm × 340 mm) described later is prepared. The undeposited area ratio is about 1.3%.

  For the laminated light-shielding film with an indicator of Example 3 and Comparative Example 3 described above, in the following Experiments 4 to 5, a responsiveness confirmation test was performed to evaluate the function of the indicator. A light resistance test was conducted to evaluate the light shielding property.

<Experiment 4>
* Responsiveness confirmation test method: A four-pack pouch (285 mm x 340 mm) was prototyped using the laminated light-shielding films with indicators of Example 3 and Comparative Example 3, respectively. Two types of four-pack pouches (285 mm × 340 mm) were produced as prototypes. When the primary infusion container shown in FIG. 2 is packaged in the first type four-pack pouch, as shown in FIG. 3, the indicator part (M) provided in the non-deposited part of aluminum is from the vitamin chamber (K). It is located far away. On the other hand, when the primary infusion container shown in FIG. 2 is packaged, the second-type four-pack pouch has an indicator part (M) provided in an undeposited part of aluminum positioned close to the vitamin chamber (K). It is. Next, in each 4-pack pouch, an oxygen scavenger was housed, and when it showed a reduced color within 3 days, it was marked as ◯, and when it took more days, it was marked as x. Finally, open the pouch that shows a reduced color and if it is within one day until it changes to oxidized color,
When it took more than one day, it was set as x.

<Experiment 5>
* Light resistance test method: Using the laminated light-shielding film with an indicator of Example 3 and Comparative Example 3, two types of four-pack pouches (285 mm × 340 mm) were produced as prototypes. When the primary infusion container shown in FIG. 2 is packaged in the first type four-pack pouch, as shown in FIG. 3, the indicator part (M) provided in the non-deposited part of aluminum is from the vitamin chamber (K). It is located far away. On the other hand, when the primary infusion container shown in FIG. 2 is packaged, the second-type four-pack pouch has an indicator part (M) provided in an undeposited part of aluminum positioned close to the vitamin chamber (K). It is. Next, high calorie infusion Neoparen No. 2 (1000 ml, manufacturer: Otsuka Pharmaceutical Factory) was packaged as a primary infusion container shown in FIG. Finally, a fluorescent lamp irradiation test (accumulated light amount of 1,200,000 lux) was performed, and the residual amount of ascorbic acid was estimated from the UV-VIS absorption spectrum.

  Table 2 below shows the results obtained by the experiments 4 to 5 with respect to the laminated light-shielding films with indicators of Example 3 and Comparative Example 3.

上記結果から、実施例３、比較例３の何れの場合でも、インジケーターは良好に機能することが分かる。また、比較例３のようにアルミの未蒸着部分の表面積を大きくすると、この部分がビタミン室に近いか遠いかにかかわらず、そこからの光の進入が、ビタミンの有効性を落とすことが分かる。更に、アルミの未蒸着部分が１％以下でも、ビタミン室と近接していると、そこからの光の進入が、ビタミンの有効性を落とすことが分かる。

From the above results, it can be seen that the indicator functions well in both cases of Example 3 and Comparative Example 3. Moreover, when the surface area of the non-deposited portion of aluminum is increased as in Comparative Example 3, it can be seen that the entry of light from this portion reduces the effectiveness of the vitamin regardless of whether this portion is close to or far from the vitamin chamber. Furthermore, even if the undeposited portion of aluminum is 1% or less, if it is close to the vitamin chamber, the entry of light from there will reduce the effectiveness of the vitamin.

The figure which shows the cross section of the laminated light shielding film with an indicator of this invention with the positional relationship of the contents when using this laminated light shielding film as an exterior bag. The figure which shows the side surface of an infusion primary container. The figure which looked through through what packaged the infusion primary container as contents with the exterior bag created using the laminated light shielding film with an indicator of the present invention.

Explanation of symbols

A ... Printing base layer B ... Anchor coat layer C ... Polyethylene layer D ... Oxygen barrier layer E ... Adhesive layer F ... Light-shielding layer G ... Thermal fusion layer H ... Plastic port part I ... Easy open part J ... Infusion primary Container K ... Vitamin chamber L ... Outer packaging M ... Indicator section

Claims (7)

A laminated film having at least an oxygen barrier layer, a light shielding layer, and a heat fusion layer,
The light shielding layer is a vapor-deposited aluminum film having an aluminum non-deposited portion, and an indicator is provided on the aluminum non-deposited portion.
A laminated light-shielding film with an indicator, which is used for preparing an outer bag for packaging a primary container filled with an easily oxidizable substance and a photodegradable substance. According to the gas permeability test method for plastic films and sheets according to JIS K 7126, the measured oxygen permeability at a temperature of 20 ° C. and a humidity of 65% RH is 5.0 ml / m ² / day / MPa or less. 2. The laminated light-shielding film with an indicator according to claim 1, wherein the total light transmittance of the portion having s is 1% or less.   When the outer bag is used, the aluminum non-deposited portion with the indicator is 1% or less of the outer bag surface area, and it is not close to the place filled with the photodegradable material of the primary container packed with this outer bag. The laminated light shielding film with an indicator according to any one of claims 1 and 2.   The laminated light-shielding film with an indicator according to any one of claims 1 to 3, wherein the aluminum non-deposited portion is provided using pasta processing or celite processing.   The oxygen barrier layer is a transparent vapor-deposited film on which alumina or silicon oxide is vapor-deposited, or a coextruded film comprising a nylon resin layer, an ethylene-vinyl alcohol copolymer and a nylon resin layer, a nylon resin layer and MXD nylon The laminated light-shielding film with an indicator according to any one of claims 1 to 4, which is a barrier nylon film such as a coextruded film comprising a layer and a nylon resin layer.   The laminated light-shielding film with an indicator according to any one of claims 1 to 5, wherein the primary container is an infusion bag filled with amino acids, sugar / electrolyte, and vitamins.   The exterior bag produced using the laminated light shielding film with an indicator of any one of Claims 1-6.

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