JP4700230B2 - bag - Google Patents

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JP4700230B2
JP4700230B2 JP2001217273A JP2001217273A JP4700230B2 JP 4700230 B2 JP4700230 B2 JP 4700230B2 JP 2001217273 A JP2001217273 A JP 2001217273A JP 2001217273 A JP2001217273 A JP 2001217273A JP 4700230 B2 JP4700230 B2 JP 4700230B2
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Prior art keywords
layer
film
bag
adhesive
inner layer
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JP2001217273A
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JP2003026187A (en
Inventor
英哉 鈴木
義則 稲川
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Kao Corp
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Kao Corp
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Description

【0001】
【発明の属する技術分野】
本発明は20℃における蒸気圧が2.6Pa以上の香料を30〜100重量%含有する調合香料を含む内容物を収容する袋に関する。
【0002】
【従来の技術】
20℃における蒸気圧が2.6Pa以上の香料として例えばリモネン、リナロール、シトラール、リナリルアセテート、L−メントール、カンファー等を30〜100重量%含有する調合香料を含む液体は、液体洗浄剤等として用いられるが、このような液体製品は、例えば詰替用として合成樹脂製のフィルム材料からなる袋に密封収容されて、流通、販売される場合がある。
【0003】
このような液体製品を密封収容する袋は、調合香料を外部に逃がさない保香性と、流通時等におけるピンホールの発生を抑制する機能とを兼ね備える必要があるため、従来技術によれば、塩化ビニルによって覆われた延伸ポリアミド(ONy)を外側層とし、直鎖低密度ポリエチレン(L−LDPE)を内側層とする複数層フィルム材料を用いて袋を形成していた。かかる複数層フィルム材料によれば、延伸ポリアミドによってピンホールの発生を抑制できると共に、延伸ポリアミドを覆う塩化ビニルによって上記特定の調合香料の漏れを効果的に防止することができる。
【0004】
【発明が解決しようとする課題】
上記従来の袋によれば、塩化ビニルの存在によって、近年考慮されている環境等に影響を及ぼすことになるという課題があった。
【0005】
尚、従来の他の袋として、特開2000-167972号公報に記載の如く、積膜体の中間膜としてAl箔、シリカ蒸着フィルム、金属酸化物蒸着フィルム等を追加し、保香性(バリア性)の改善を図ったものがある。
【0006】
本発明の課題は、塩化ビニルを用いない、簡易な材料構成により、上記特定の調合香料に対する保香性と、ピンホールの発生を抑制し得る突刺し強度とを向上することにある。
【0007】
【課題を解決するための手段】
請求項1の発明は、側壁フィルムと底壁フィルムとを熱接着してなり、20℃における蒸気圧が2.6Pa以上の香料を30〜100重量%含有する調合香料を含む内容物を密封収容する袋であって、側壁フィルムは、外側層と熱接着性フィルムからなる内側層とを接着剤層を介して積膜したものであり、外側層がポリアミド層から構成され、内側層が表裏のポリエチレン層からなる熱接着層とその中間の高密度ポリエチレン層の全層を接着剤層を介することがなく互いに熱分離しない一膜をなすものにて構成され、底壁フィルムは、外側層と内側層とを接着剤層を介して積膜したものであり、外側層がポリアミド層から構成され、内側層がポリエチレン層にて構成されてなり、側壁フィルムの内側層と底壁フィルムの内側層とを熱接着して構成されるようにしたものである。
【0008】
【発明の実施の形態】
袋100は、図1に示す如く、20℃における蒸気圧が2.6Pa以上の香料を30〜100重量%含有する調合香料を含む液体である液体洗浄剤を、密封状態で収容する詰替用の容器として用いられる自立袋100である。この自立袋100は、後述する可撓性の熱接着性フィルム材料からなる一対の側壁フィルム1と、同じく後述する可撓性の熱接着性フィルム材料からなる底壁フィルム2とを、その縁部をシールして袋状に一体化し、液体を収容する収容部3を形成したものである。
【0009】
20℃における蒸気圧が2.6Pa以上の香料を30〜100重量%含有する調合香料は、テルペン若しくはそのテルペン化物を含むときに効果が顕著である。また、20℃における蒸気圧が2.6Pa以上の香料としては、洗浄剤等に用いられる香料であれば特に制限されることなく用いることができるが、例えばリモネン、リナロール、シトラール、リナリルアセテート、L−メントール、カンファーを用いるときに香料の漏れを防止する効果が顕著である。リモネンを含む天然香料、カンファーを含む天然香料、L−メントールを含む天然香料、リナロールを含む天然香料等を用いることもできる。これらの香料は、例えばオレンジ系香料、ライム系香料、ハーブ系香料として使用される。更に、調合香料は、液体洗浄剤に0.001〜10重量%含まれるときに効果が顕著である。
【0010】
(第1実施形態)
袋100の側壁フィルム1としては、図2に示した外側層11と内側層(熱接着層フィルム)12を接着剤層13を介して積膜した積膜体10を用いる。袋100は、一対の側壁フィルム1を構成するように相対する2枚の積膜体10のシール部(不図示)でそれらの内側層(熱接着層フィルム)12、12を熱接着することにて構成される。
【0011】
側壁フィルム1の外側層11は、耐熱性、印刷適性の良い例えばONy膜11A、又はPET膜等にて構成できる。ONy膜は、例えば一軸延伸ポリアミド、二軸延伸ポリアミドのいずれも使用することができる。ONy膜を外側層11とすることにより、運搬時や取扱時の衝撃等により液体洗浄剤を収容した自立袋100にピンホールが発生するのを効果的に抑制することが可能になる。尚、ピンホールは、自立袋100に収容された液体洗浄剤は通過させないが、調合香料による揮散ガスは通過させる程度の微細な孔である。
【0012】
側壁フィルム1の内側層(熱接着層フィルム)12は、表裏の熱接着層21、22を熱接着性やESCR性(耐環境応力亀裂性)の良い例えばLLDPE層21A、22A、又は低密度ポリエチレン層(LDPE層)等にて構成し、熱接着層21、22の内層たる中間層を熱接着層21、22より高密度をなし、内容物中の香料が自立袋100の外部へ漏れることを防止する高保香性(高バリア性)、高剛性、高強度の例えば高密度ポリエチレン層(HDPE層)23A等からなる高密度層23にて構成し、それらの熱接着層21(LLDPE層21A)、高密度層23(HDPE層23A)、熱接着層22(LLDPE層22A)の全層を接着剤層を介することのないように共押し出しして互いに熱分離しない一膜をなすものに積層した。本実施形態の積膜体10は、例えばONy/LLDPE・HDPE・LLDPEとして表記するものとする(/は接着剤層を介した膜間、・は接着剤層を介さない層間を示す)。
【0013】
自立袋100の底壁フィルム2としては、外側層と内側層を接着剤層を介して積膜した積膜体を用いる。自立袋100は、一対の側壁フィルム1の間に底壁フィルム2を挟み、底壁フィルム2の両側の内側層に各側壁フィルム1の内側層(熱接着性フィルム)12を熱接着することにて構成される。
【0014】
底壁フィルム2の外側層は、ONy膜等にて構成できる。ONy膜は、例えば一軸延伸ポリアミド、二軸延伸ポリアミドのいずれも使用することができる。
【0015】
底壁フィルム2の内側層は、ポリエチレン膜等にて構成できる。ポリエチレン膜は、例えばLLDPE、LDPE、HDPE等を使用することができる。
【0016】
尚、側壁フィルム1を構成する複数層フィルム材料及び底壁フィルム2を構成する複数層フィルム材料は、透明な場合に紫外線吸収剤である例えばチヌビンを有することが好ましい。
【0017】
本実施形態によれば、以下の作用がある。
▲1▼自立袋100の側壁フィルム1を構成する複数層フィルム材料が、ONy膜からなる外側層11と、高密度層23(HDPE層23A)を含む内側層(熱接着性フィルム)12からなるので、塩化ビニルを用いることなく、内側層(熱接着性フィルム)12により上記特定の調合香料に対する保香性を備えるとともに、外側層11と内側層(熱接着性フィルム)12のそれぞれによりピンホールの発生を抑制する機能を備えることができる。
【0018】
▲2▼内側層(熱接着性フィルム)12を接着剤層を介さないで積層した一膜からなるものとし、熱接着層21、22(LLDPE層21A、22A)より内層の一層(HDPE層23A)を他の層よりも高密度化した。従って、熱接着性フィルム12に基本的に必要とされる熱接着性と、自立袋のESCR性は熱接着層21、22(LLDPE層21A、22A)により確保し、かつ自立袋の保香性、剛性、強度は高密度層23(HDPE層23A)により確保できる。これにより、簡易な材料構成により、しかも膜厚を増すことに依存することなく、自立袋の保香性、剛性、強度を向上できる。
【0019】
▲3▼内側層(熱接着性フィルム)12は接着剤層を介さない積層体であるから、熱接着時(通常は材料の融点以上で200℃以下)に熱接着層21、22(LLDPE層21A、22A)と高密度層23(HDPE層23A)の層間で熱分離することがないし、また高融点、高剛性の高密度層23(HDPE層23A)を中間層としているので、自立袋に設けた熱シール部の膜厚保持と強度低下を防止できる。
【0020】
▲4▼袋表面の外側層11に接着剤層13を介して内側層(熱接着性フィルム)12を積膜した積膜体により自立袋を構成し、内側層(熱接着性フィルム)12にバリア層たる高密度層23を確保したから内容物の溶剤や界面活性剤が内側層(熱接着性フィルム)12と外側層11との間の接着剤層13へ浸透するのを防止し、内側層(熱接着性フィルム)12と外側層11の接着強度の低下やそれらの膜間の剥離を防止する。即ち、内側層(熱接着性フィルム)12は内容物と直接接する部分をESCR性の良いLLDPE層21Aとし、中間層をバリア性の良いHDPE層23Aとした(図1)。従来例では、外側層(ONy膜)aと内側層(LDPE膜)bとバリア膜(Al箔)cの3膜を接着剤層d、eを介してその順に積膜した自立袋では、内容物の溶剤や界面活性剤が熱接着性フィルムbを浸透して接着剤層eに到達し、熱接着性フィルムbとバリア膜cの接着強度の低下やそれらの膜間の剥離を招いていた。
【0021】
▲5▼内側層(熱接着性フィルム)12をポリオレフィン系フィルム同士であるLLDPE層21A、22AとHDPE層23Aの組合せにより構成したから、共押し出しによる製膜適性が良いし、層間の親和性も良く、生産性を向上できる。
【0022】
(第2実施形態)
第2実施形態は自立袋100の側壁フィルム1として、図3の積膜体10Aを採用したものである。第2実施形態の積膜体10Aが、第1実施形態の積膜体10と異なる点は、外側層11と内側層(熱接着性フィルム)12の間に中間層14を設けたことにある。即ち、積膜体10Aは、外側層11と中間層14に接着剤層13を介し、中間層14と内側層(熱接着性フィルム)12に接着剤層15を介して積膜したものである。
【0023】
ここで、中間層14はポリエチレンテレフタレート膜(PET膜)からなり、自立袋100の高保香性(高バリア性)を更に高める。
【0024】
本発明は上記実施形態に限定されることなく種々の変更が可能である。例えば、20℃における蒸気圧が2.6Pa以上の香料を30〜100重量%含有する調合香料を含む液体は、必ずしも液体洗浄剤である必要はない。
【0025】
また、自立袋の全体をONy膜からなる外側層11等と、高密度層23(HDPE層23A)を含む内側層(熱接着性フィルム)12等からなる複数層フィルム材料によって構成することもできる。
【0026】
更に、本発明の袋は、必ずしも自立袋である必要はなく、複数層フィルム材料を用いてなる種々の形態の袋として採用することができる。
【0027】
[実施例]
第1実施形態と第2実施形態のそれぞれにおいて採用した表1に示す層構成の自立袋100に、20℃における蒸気圧が2.6Pa以上の香料を30〜100重量%含有する調合香料を含む液体洗浄剤として、商品名バスマジックリン(花王株式会社製)を密封収容し、実施例1、2の自立袋を得た。これらの自立袋について表2に示す保存条件及び保存期間で保香性の評価を以下のようにして行なった。また、表3に示す突刺し強度の評価を以下のようにして行なった。一方、比較例として、従来の技術に相当するONyを外側層とし、L−LDPEを内側層とする複数層フィルム材料を用いて形成した自立袋について、同様の保香性の評価及び突刺し強度の評価を行なった。
【0028】
【表1】

Figure 0004700230
【0029】
(保香性の評価)(表2)
各保存条件下における20日間の保存期間が経過した後の各密封状態の自立袋について、周囲の匂いの程度を評価し、匂いの弱い順にA、B、C、D、Eの五段階の評価を行なった。A、B、Cを合格、D、Eを不合格とした。
【0030】
【表2】
Figure 0004700230
【0031】
(突刺し強度の評価)(表3)
実施例1、2と比較例の自立袋を構成する複数層フィルム材料に先端R0.5の円錐形ピットを押し当て、プッシュプルゲージで突刺し強度を測定した。
【0032】
【表3】
Figure 0004700230
【0033】
表2、表3の結果によれば、保香性、突刺し強度の点で、本発明品は優れることが認められる。
【0034】
【発明の効果】
以上のように本発明によれば、塩化ビニルを用いない、簡易な材料構成により、上記特定の調合香料に対する保香性と、ピンホールの発生を抑制し得る突刺し強度とを向上することができる。
【図面の簡単な説明】
【図1】 図1は自立袋の一例を示す正面図である。
【図2】 図2は第1実施形態の袋の積膜構造を示す模式図である。
【図3】 図3は第2実施形態の袋の積膜構造を示す模式図である。
【符号の説明】
1 側壁フィルム
2 底壁フィルム
11 外側層
12 内側層(熱接着性フィルム)
21、22 熱接着層
21A、22A LLDPE層
23 高密度層
23A HDPE層
100 自立袋[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bag for containing contents containing a blended fragrance containing 30 to 100% by weight of a fragrance having a vapor pressure at 20 ° C. of 2.6 Pa or more.
[0002]
[Prior art]
A liquid containing a blended fragrance containing 30 to 100% by weight of limonene, linalool, citral, linalyl acetate, L-menthol, camphor, etc. as a fragrance having a vapor pressure at 20 ° C. of 2.6 Pa or more is used as a liquid detergent or the like. However, such a liquid product may be distributed and sold in a sealed manner in a bag made of a synthetic resin film material for refilling, for example.
[0003]
Since the bag for hermetically storing such a liquid product needs to have both a fragrance retention property that does not allow the blended fragrance to escape to the outside and a function of suppressing the occurrence of pinholes during distribution, etc., according to the prior art, A bag was formed using a multi-layer film material having stretched polyamide (ONy) covered with vinyl chloride as an outer layer and linear low density polyethylene (L-LDPE) as an inner layer. According to such a multilayer film material, generation of pinholes can be suppressed by the stretched polyamide, and leakage of the specific blended fragrance can be effectively prevented by the vinyl chloride covering the stretched polyamide.
[0004]
[Problems to be solved by the invention]
According to the conventional bag, there is a problem that the presence of vinyl chloride affects the environment and the like that have been considered in recent years.
[0005]
In addition, as other conventional bags, as described in JP-A-2000-167972, an Al foil, a silica vapor deposition film, a metal oxide vapor deposition film, etc. are added as an intermediate film of a film body, and aroma retention (barrier There is a thing which aimed at improvement of (sex).
[0006]
The subject of this invention is improving the scent strength which can suppress generation | occurrence | production of a pinhole, and the pinhole generation | occurrence | production with the simple material structure which does not use vinyl chloride.
[0007]
[Means for Solving the Problems]
The invention of claim 1 and a side wall film and the bottom wall film becomes thermally bonded, sealed housing the contents containing the blended fragrance of vapor pressure at 20 ° C. contains 30 to 100% by weight or more flavoring 2.6Pa The side wall film is a bag in which an outer layer and an inner layer made of a heat-adhesive film are stacked via an adhesive layer, the outer layer is composed of a polyamide layer, and the inner layer is polyethylene on the front and back sides. The bottom wall film is composed of a thermal adhesive layer consisting of two layers and a high-density polyethylene layer in the middle forming a film that does not thermally separate from each other without an adhesive layer. The outer layer is composed of a polyamide layer, the inner layer is composed of a polyethylene layer, and the inner layer of the side wall film and the inner layer of the bottom wall film are combined. constructed by thermal bonding It is obtained by the.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the bag 100 is a refill for containing a liquid cleaning agent containing a blended fragrance containing 30 to 100% by weight of a fragrance having a vapor pressure of 2.6 Pa or higher at 20 ° C. in a sealed state. A self-supporting bag 100 used as a container. The self-supporting bag 100 includes a pair of side wall films 1 made of a flexible heat-adhesive film material described later and a bottom wall film 2 made of a flexible heat-adhesive film material, which will be described later. Is sealed and integrated into a bag shape to form a storage portion 3 for storing a liquid.
[0009]
A blended fragrance containing 30 to 100% by weight of a fragrance having a vapor pressure at 20 ° C. of 2.6 Pa or more has a remarkable effect when it contains terpene or a terpene compound thereof. Moreover, as a fragrance | flavor whose vapor pressure in 20 degreeC is 2.6 Pa or more, if it is a fragrance | flavor used for a cleaning agent etc., it can use without a restriction | limiting especially, For example, a limonene, a linalool, a citral, a linalyl acetate, L- When using menthol and camphor, the effect of preventing leakage of the fragrance is remarkable. Natural fragrances including limonene, natural fragrances including camphor, natural fragrances including L-menthol, natural fragrances including linalool, and the like can also be used. These fragrances are used, for example, as orange fragrances, lime fragrances, and herbal fragrances. Further, the effect of the blended fragrance is remarkable when 0.001 to 10% by weight is contained in the liquid detergent.
[0010]
(First embodiment)
As the side wall film 1 of the bag 100, the film body 10 in which the outer layer 11 and the inner layer (thermal bonding layer film) 12 shown in FIG. 2 are stacked via the adhesive layer 13 is used. The bag 100 is to thermally bond the inner layers (thermoadhesive layer films) 12 and 12 with seal portions (not shown) of the two laminated film bodies 10 facing each other so as to constitute a pair of side wall films 1. Configured.
[0011]
The outer layer 11 of the sidewall film 1 can be composed of, for example, an ONy film 11A or a PET film having good heat resistance and printability. As the ONy film, for example, either uniaxially stretched polyamide or biaxially stretched polyamide can be used. By using the ONy film as the outer layer 11, it is possible to effectively suppress the occurrence of pinholes in the self-supporting bag 100 containing the liquid cleaning agent due to an impact during transportation or handling. The pinhole is a fine hole that does not allow the liquid detergent contained in the self-supporting bag 100 to pass through, but allows the volatilized gas from the blended fragrance to pass through.
[0012]
The inner layer (thermoadhesive layer film) 12 of the side wall film 1 is made of, for example, LLDPE layers 21A, 22A, or low-density polyethylene having good thermal adhesiveness and ESCR properties (environmental stress crack resistance). Layer (LDPE layer), etc., and the intermediate layer, which is the inner layer of the thermal adhesive layers 21 and 22, has a higher density than the thermal adhesive layers 21 and 22, and the fragrance in the contents leaks out of the freestanding bag 100. It is composed of a high-density layer 23 made of, for example, a high-density polyethylene layer (HDPE layer) 23A having a high incense retention (high barrier property), high rigidity, and high strength, and the thermal adhesive layer 21 (LLDPE layer 21A). All layers of the high-density layer 23 (HDPE layer 23A) and the thermal adhesive layer 22 (LLDPE layer 22A) are coextruded so as not to pass through the adhesive layer, and laminated to form a film that does not thermally separate from each other. . The laminated film body 10 of the present embodiment is expressed as, for example, ONy / LLDPE / HDPE / LLDPE (/ indicates an inter-film through an adhesive layer, and / indicates an inter-layer without an adhesive layer).
[0013]
As the bottom wall film 2 of the self-supporting bag 100, a film body in which an outer layer and an inner layer are stacked via an adhesive layer is used. The self-supporting bag 100 sandwiches the bottom wall film 2 between the pair of side wall films 1 and thermally bonds the inner layers (thermal adhesive films) 12 of the side wall films 1 to the inner layers on both sides of the bottom wall film 2. Configured.
[0014]
The outer layer of the bottom wall film 2 can be composed of an ONy film or the like. As the ONy film, for example, either uniaxially stretched polyamide or biaxially stretched polyamide can be used.
[0015]
The inner layer of the bottom wall film 2 can be composed of a polyethylene film or the like. For the polyethylene film, for example, LLDPE, LDPE, HDPE, or the like can be used.
[0016]
In addition, when the multilayer film material which comprises the side wall film 1 and the multilayer film material which comprises the bottom wall film 2 are transparent, it is preferable to have a UV absorber, for example, tinuvin.
[0017]
According to this embodiment, there are the following operations.
(1) The multi-layer film material constituting the side wall film 1 of the self-supporting bag 100 includes an outer layer 11 made of an ONy film and an inner layer (thermal adhesive film) 12 including a high-density layer 23 (HDPE layer 23A). Therefore, without using vinyl chloride, the inner layer (thermoadhesive film) 12 has a fragrance retention property for the specific blended fragrance, and the outer layer 11 and the inner layer (thermoadhesive film) 12 each have a pinhole. The function which suppresses generation | occurrence | production of can be provided.
[0018]
(2) The inner layer (thermoadhesive film) 12 is made of a single film laminated without an adhesive layer, and the inner layer (HDPE layer 23A) is more than the thermal adhesive layers 21 and 22 (LLDPE layers 21A and 22A). ) Was made more dense than the other layers. Therefore, the thermal adhesiveness basically required for the thermal adhesive film 12 and the ESCR property of the self-supporting bag are ensured by the heat-adhesive layers 21 and 22 (LLDPE layers 21A and 22A), and the incense retaining property of the self-supporting bag. The rigidity and strength can be ensured by the high-density layer 23 (HDPE layer 23A). Thereby, the fragrance retention property, rigidity, and strength of the self-supporting bag can be improved with a simple material configuration and without depending on increasing the film thickness.
[0019]
(3) Since the inner layer (thermoadhesive film) 12 is a laminate without an adhesive layer, the thermoadhesive layers 21 and 22 (LLDPE layers) at the time of thermal bonding (usually higher than the melting point of the material and lower than 200 ° C.) 21A, 22A) and the high-density layer 23 (HDPE layer 23A) are not thermally separated, and the high-melting-point, high-rigidity high-density layer 23 (HDPE layer 23A) is used as an intermediate layer. It is possible to prevent film thickness retention and strength reduction of the provided heat seal portion.
[0020]
(4) A self-supporting bag is formed by a laminated body in which an inner layer (thermoadhesive film) 12 is deposited on an outer layer 11 on the bag surface via an adhesive layer 13, and the inner layer (thermoadhesive film) 12 Since the high-density layer 23 as a barrier layer is secured, the solvent or surfactant of the contents is prevented from penetrating into the adhesive layer 13 between the inner layer (thermal adhesive film) 12 and the outer layer 11, and the inner side Decrease in adhesive strength between the layer (thermal adhesive film) 12 and the outer layer 11 and separation between the films are prevented. That is, the inner layer (thermoadhesive film) 12 was a portion directly in contact with the contents made an LLDPE layer 21A having a good ESCR property and an intermediate layer made an HDPE layer 23A having a good barrier property (FIG. 1). In the conventional example, in the self-supporting bag in which three films of the outer layer (ONy film) a, the inner layer (LDPE film) b, and the barrier film (Al foil) c are stacked in this order via the adhesive layers d and e, Solvents and surfactants of the product penetrated the heat-adhesive film b and reached the adhesive layer e, leading to a decrease in the adhesive strength between the heat-adhesive film b and the barrier film c and peeling between the films. .
[0021]
(5) The inner layer (thermoadhesive film) 12 is composed of a combination of LLDPE layers 21A, 22A and HDPE layers 23A, which are polyolefin films, so that the film forming suitability by coextrusion is good and the interlayer compatibility is also good. Good and can improve productivity.
[0022]
(Second Embodiment)
2nd Embodiment employ | adopts the laminated body 10A of FIG. 3 as the side wall film 1 of the self-supporting bag 100. FIG. The film body 10A of the second embodiment is different from the film body 10 of the first embodiment in that an intermediate layer 14 is provided between the outer layer 11 and the inner layer (thermal adhesive film) 12. . That is, the laminated film body 10A is formed by depositing the outer layer 11 and the intermediate layer 14 via the adhesive layer 13 and depositing the intermediate layer 14 and the inner layer (thermal adhesive film) 12 via the adhesive layer 15. .
[0023]
Here, the intermediate layer 14 is made of a polyethylene terephthalate film (PET film), and further enhances the high aroma retention (high barrier property) of the self-standing bag 100.
[0024]
The present invention is not limited to the above embodiment, and various modifications can be made. For example, a liquid containing a blended fragrance containing 30 to 100% by weight of a fragrance having a vapor pressure at 20 ° C. of 2.6 Pa or more is not necessarily a liquid detergent.
[0025]
Further, the entire self-supporting bag can be constituted by a multi-layer film material composed of an outer layer 11 and the like made of an ONy film and an inner layer (thermal adhesive film) 12 and the like including a high-density layer 23 (HDPE layer 23A). .
[0026]
Furthermore, the bag of this invention does not necessarily need to be a self-supporting bag, and can be employed as various types of bags made of a multilayer film material.
[0027]
[Example]
A liquid containing a blended fragrance containing 30 to 100% by weight of a fragrance having a vapor pressure of 2.6 Pa or higher at 20 ° C. in the self-standing bag 100 having the layer configuration shown in Table 1 adopted in each of the first embodiment and the second embodiment As a cleaning agent, trade name Bath Magiclin (manufactured by Kao Corporation) was hermetically stored to obtain self-supporting bags of Examples 1 and 2. About these self-supporting bags, the scent retention was evaluated as follows under the storage conditions and storage periods shown in Table 2. Moreover, the puncture strength shown in Table 3 was evaluated as follows. On the other hand, as a comparative example, for a self-supporting bag formed using a multi-layer film material having ONy corresponding to the conventional technology as an outer layer and L-LDPE as an inner layer, the same evaluation of perfume and puncture strength Was evaluated.
[0028]
[Table 1]
Figure 0004700230
[0029]
(Evaluation of aroma retention) (Table 2)
For each sealed self-standing bag after the storage period of 20 days under each storage condition, evaluate the degree of ambient odor, and evaluate in five levels A, B, C, D, E in order of decreasing odor Was done. A, B, and C were accepted, and D and E were rejected.
[0030]
[Table 2]
Figure 0004700230
[0031]
(Evaluation of puncture strength) (Table 3)
The cone-shaped pit at the tip R0.5 was pressed against the multilayer film materials constituting the self-supporting bags of Examples 1 and 2 and the comparative example, and the piercing strength was measured with a push-pull gauge.
[0032]
[Table 3]
Figure 0004700230
[0033]
According to the results of Tables 2 and 3, it is recognized that the product of the present invention is superior in terms of aroma retention and puncture strength.
[0034]
【The invention's effect】
As described above, according to the present invention, it is possible to improve the fragrance retention property for the specific blended fragrance and the piercing strength capable of suppressing the generation of pinholes by a simple material configuration that does not use vinyl chloride. it can.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a self-supporting bag.
FIG. 2 is a schematic diagram showing a stacked film structure of a bag according to the first embodiment.
FIG. 3 is a schematic diagram showing a stacked film structure of a bag according to a second embodiment.
[Explanation of symbols]
1 Side wall film
2 Bottom wall film
11 outer layer 12 inner layer (thermal adhesive film)
21, 22 Thermal adhesive layer 21A, 22A LLDPE layer 23 High-density layer 23A HDPE layer 100 Self-standing bag

Claims (4)

側壁フィルムと底壁フィルムとを熱接着してなり、20℃における蒸気圧が2.6Pa以上の香料を30〜100重量%含有する調合香料を含む内容物を密封収容する袋であって、
側壁フィルムは、外側層と熱接着性フィルムからなる内側層とを接着剤層を介して積膜したものであり、外側層がポリアミド層から構成され、内側層が表裏のポリエチレン層からなる熱接着層とその中間の高密度ポリエチレン層の全層を接着剤層を介することがなく互いに熱分離しない一膜をなすものにて構成され、
底壁フィルムは、外側層と内側層とを接着剤層を介して積膜したものであり、外側層がポリアミド層から構成され、内側層がポリエチレン層にて構成されてなり、
側壁フィルムの内側層と底壁フィルムの内側層とを熱接着して構成される袋。
Sidewall film and a bottom wall film becomes thermally bonded to a bag sealing accommodate the contents containing the blended fragrance of vapor pressure at 20 ° C. contains 30 to 100 wt% or more perfume 2.6 Pa,
The side wall film is formed by laminating an outer layer and an inner layer made of a heat-adhesive film via an adhesive layer, the outer layer is made of a polyamide layer, and the inner layer is made of a polyethylene layer on both sides. It is composed of a layer and all layers of a high density polyethylene layer in between that form a film that does not thermally separate from each other without an adhesive layer,
The bottom wall film is formed by laminating an outer layer and an inner layer through an adhesive layer, the outer layer is composed of a polyamide layer, and the inner layer is composed of a polyethylene layer,
A bag formed by thermally bonding an inner layer of a side wall film and an inner layer of a bottom wall film .
前記側壁フィルムとして、外側層と内側層の間に中間層を設け、外側層と中間層に接着剤層を介し、中間層と内側層に接着剤層を介して積膜してなり、中間層がポリエチレンテレフタレート層からなる請求項1に記載の袋。 As the side wall film, an intermediate layer is provided between the outer layer and the inner layer, and the outer layer and the intermediate layer are stacked with the adhesive layer interposed therebetween, and the intermediate layer and the inner layer are stacked with the adhesive layer interposed therebetween. The bag according to claim 1, comprising a polyethylene terephthalate layer . 前記側壁フィルムの内側層が、表裏の層に少なくとも直鎖低密度ポリエチレン又は低密度ポリエチレンからなる層を配してなる請求項1又は2に記載の袋。 The inner layer of the side wall film, bags according to claim 1 or 2 formed by arranging a layer made of at least a linear low density polyethylene or low density polyethylene on both sides of the layer. 請求項1〜のいずれかに記載の袋に、前記調合香料を含む液体洗浄剤を密封収容した袋製品。The bag product which stored the liquid cleaning agent containing the said mixing | blending fragrance | sealing in the bag in any one of Claims 1-3 .
JP2001217273A 2001-07-17 2001-07-17 bag Expired - Lifetime JP4700230B2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5519522A (en) * 1978-07-29 1980-02-12 Yoshizaki Kozo Transparent hermetic seal packing body that have excellent longitudinal tear property
JPS6178644A (en) * 1984-09-27 1986-04-22 出光石油化学株式会社 Multilayer film
JPH10278196A (en) * 1997-04-09 1998-10-20 Daicel Chem Ind Ltd Composite film and its production
JP2000109128A (en) * 1998-10-07 2000-04-18 Kao Corp Volatile stuff enclosed bag

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5519522A (en) * 1978-07-29 1980-02-12 Yoshizaki Kozo Transparent hermetic seal packing body that have excellent longitudinal tear property
JPS6178644A (en) * 1984-09-27 1986-04-22 出光石油化学株式会社 Multilayer film
JPH10278196A (en) * 1997-04-09 1998-10-20 Daicel Chem Ind Ltd Composite film and its production
JP2000109128A (en) * 1998-10-07 2000-04-18 Kao Corp Volatile stuff enclosed bag

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