JP2016132481A - Rice bag packing material - Google Patents
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本発明は、米穀類を包装し、流通するために用いる包装袋に関し、包装袋に米穀類を封入して積み重ねた時に、内部に残留する余剰な空気を円滑で確実に袋外へ放出でき、且つ、流通過程において前記孔から水や虫などが入り込まないように開孔部が設けられたエア抜き機構を有する包装袋の技術に関する。 The present invention relates to a packaging bag used for packaging and distributing rice grains, and when the rice grains are enclosed and stacked in a packaging bag, excess air remaining inside can be discharged smoothly and reliably to the outside of the bag, And it is related with the technique of the packaging bag which has the air bleeding mechanism provided with the opening part so that water, an insect, etc. may not enter from the said hole in the distribution process.
従来、米穀類を包装し、流通するために用いる包装袋は、大抵の場合、プラスチックの多層積層フィルムまたは単層フィルムを袋状に熱接着して製造される包装袋が用いられてきた。そして、袋を形成するフィルムとしては、例えば、２軸延伸ナイロンフィルム／アルミ蒸着ポリエチレンテレフタレートフィルム／直鎖状低密度ポリエチレン層の積層フィルムや、２軸延伸ナイロンフィルム／直鎖状低密度ポリエチレン層の積層フィルムなどの多層積層フィルム、或いは、直鎖状低密度ポリエチレンの単層フィルムなどが用いられている。 Conventionally, packaging bags used for packaging and distributing rice cereals have been used in most cases by packaging a plastic multilayer film or a single layer film by heat bonding into a bag shape. And as a film which forms a bag, for example, a laminated film of biaxially stretched nylon film / aluminum-deposited polyethylene terephthalate film / linear low density polyethylene layer or biaxially stretched nylon film / linear low density polyethylene layer A multilayer laminated film such as a laminated film or a single layer film of linear low density polyethylene is used.
このようなフィルムで形成される包装袋に米穀類のような重量物を充填包装する場合、プラスチックフィルムは通気性がないため、流通過程における包装体の集積による荷崩れや運搬によって、米袋が押し潰されて内圧が高くなり破損する可能性があった。 When packaging heavy bags such as rice grains in packaging bags formed of such films, plastic films are not breathable, so the rice bags are pushed by the collapse of goods and transportation due to the accumulation of the packaging in the distribution process. There was a possibility that the internal pressure would be increased due to being crushed, resulting in damage.
そこで、こうした点をさらに解消するために、従来のプラスチックフィルムからなる米袋は、熱溶着部の一部や米袋の平面部の一部に通気孔を設けている。 Therefore, in order to further eliminate these points, the conventional rice bag made of a plastic film is provided with a vent hole in a part of the heat-welded part and a part of the flat part of the rice bag.
上記の従来技術においては、例えば、孔径が１０００μｍより大きいサイズ孔を包装袋に設れば、袋内の余分の空気を逃がすためには充分な大きさであり、１袋当たりに開孔する数も僅かでよく、それによる袋強度の低下も問題にはならない。しかし、孔径が１０００μｍより大きい場合、害虫が開孔部から侵入する問題や、切り込み口から裂ける等の問題があった。 In the above prior art, for example, if a hole having a hole diameter larger than 1000 μm is provided in the packaging bag, the hole is large enough to allow excess air in the bag to escape, and the number of holes opened per bag. However, a decrease in bag strength due to this is not a problem. However, when the hole diameter is larger than 1000 μm, there are problems such as a problem that a pest enters from the opening part and a tear from the cut opening.
また、孔の配列を格子状に整列させる等した場合には、各孔同士の距離が接近する事になる為、袋としての強度が低下してしまう問題があった。 In addition, when the holes are arranged in a lattice pattern, the distance between the holes approaches, so that there is a problem that the strength as a bag is lowered.
さらに、米袋を運ぶ際には全重量が袋の下部にかかる為、袋の下部にも空気孔を設けた袋体においては、下部の袋としての強度が低下してしまい、孔が大きくなる、切り込み部から裂ける等の発生が懸念されていた。 Furthermore, when carrying a rice bag, the total weight is applied to the lower part of the bag, so in the bag body provided with air holes also in the lower part of the bag, the strength as the lower bag is reduced, and the hole becomes larger, There was a concern about the occurrence of tearing from the notch.
本発明は、上記のような問題点に鑑みてなされたものであり、その目的とするところは、脱気用に複数の孔が設けられたプラスチックフィルム製の米穀類用包装袋において、その開孔部の脱気性能が、実際の使用においても損なわれることなく有効に発揮され、また、開孔による袋の強度低下の問題も発生せず、更に、害虫の侵入も防止できるという性能に優れたエア抜き機構を有する包装袋を生産性よく提供することにある。 The present invention has been made in view of the above-described problems, and an object of the present invention is to open a plastic film rice cereal packaging bag provided with a plurality of holes for deaeration. Degassing performance of the hole is effectively demonstrated without being impaired even in actual use, and there is no problem of bag strength reduction due to opening, and furthermore, it is excellent in performance of preventing invading pests Another object is to provide a packaging bag having an air venting mechanism with high productivity.
上記の課題を解決するため鋭意研究した結果害虫の侵入を防ぐためには、包装袋に設ける孔の孔径（孔が円形でない場合は最大部分の径）を１０００μｍ以下にすること。そして、孔の数は、内容物を封入した包装体を積み重ねた際に、内部に残留する空気の内圧で破袋が生じない程度に速やかに脱気できることが好ましく、孔径に応じて複数の孔を開孔させる必要があること。また、孔を開けることによる包装袋の強度低下をできるだけ小さくし、且つ、良好な脱気性を得るためには、孔の間隔を５〜１０ｍｍの範囲に保ち、必要な孔数を確保すればよいこと。更に、孔を開ける位置についても、内容物を封入した包装体を積み重ねた際、包装体同士が重なり、孔が塞がれる位置では脱気の効果が損なわれるため、隣接する包装体と接触し難い端部近辺に設けることが有効であることなどの知見を得、これを基に、種々の条件で開孔部を設けた所定の寸法の包装袋に、実際に所定の量の内容物を封入し、パレット上に積み重ねる実験を繰り返し、検討することにより本発明の完成に至ったものである。 As a result of diligent research to solve the above problems, in order to prevent the invasion of pests, the hole diameter of the hole provided in the packaging bag (the diameter of the maximum part if the hole is not circular) should be 1000 μm or less. Further, the number of holes is preferably such that when the packages enclosing the contents are stacked, it can be quickly degassed to such an extent that no bag breakage occurs due to the internal pressure of the air remaining inside. It is necessary to open the hole. Moreover, in order to minimize the decrease in strength of the packaging bag due to the opening of holes and obtain good deaeration, the interval between the holes may be kept in the range of 5 to 10 mm and the necessary number of holes may be ensured. about. Furthermore, as for the positions where the holes are to be opened, when the packages enclosing the contents are stacked, the packages overlap with each other and the deaeration effect is impaired at the positions where the holes are blocked. Based on the knowledge that it is effective to provide it near the difficult end, based on this knowledge, a predetermined amount of contents are actually put into a packaging bag of a predetermined size provided with an opening under various conditions. The present invention has been completed by repeating and examining the experiment of enclosing and stacking on a pallet.
即ち、請求項１に記載の発明は、プラスチックを主とするフィルムを袋状に熱接着してなる包装袋であって、該包装袋の上部シール部及び、サイドシール部の内縁から５〜１０ｍｍの位置に孔径１００〜１０００μの複数の孔が千鳥状に配列されており、該孔は上部シール部と平行に２〜４列、サイドシール部と平行に２〜５列で配置されており、該孔の縦の配列距離および横の配列距離が６〜１２ｍｍであることを特徴とするエア抜き機構を有する包装袋である。 That is, the invention according to claim 1 is a packaging bag formed by thermally bonding a film mainly made of plastic into a bag shape, and is 5 to 10 mm from an inner edge of the upper seal portion and the side seal portion of the packaging bag. A plurality of holes having a hole diameter of 100 to 1000 μm are arranged in a staggered pattern at the positions of 2 to 4 in parallel with the upper seal part, and 2 to 5 lines in parallel with the side seal part, A packaging bag having an air venting mechanism, characterized in that a vertical arrangement distance and a horizontal arrangement distance of the holes are 6 to 12 mm.
また、請求項２に記載の発明は、前記包装袋の複数の孔が、前記包装袋の下部シール部近傍に設けられていないことを特徴とする請求項１記載のエア抜き機構を有する包装袋である。 The invention according to claim 2 is characterized in that the plurality of holes of the packaging bag are not provided in the vicinity of the lower seal portion of the packaging bag, and the packaging bag having an air bleeding mechanism according to claim 1 It is.
そして、請求項３に記載の発明は、前記包装袋のフィルムが多層積層フィルムであって、且つ、包装袋の複数の孔が、レーザー光の照射により開孔された孔であることを特徴とする請求項１または２に記載のエア抜き機構を有する包装袋である。 The invention according to claim 3 is characterized in that the film of the packaging bag is a multilayer laminated film, and the plurality of holes of the packaging bag are holes opened by laser light irradiation. A packaging bag having the air bleeding mechanism according to claim 1.
以上詳しく説明したように、本発明によれば、袋の強度が損なわれず、且つ、米などの内容物を封入し、集積し、積み上げた際にも、袋内に残留する余分な空気をスムーズに外部に放出でき、内圧の上昇による破袋もなく、更に、害虫の侵入も防止できるという性能に優れた米穀類用包装袋を容易に提供できる効果を奏する。 As described above in detail, according to the present invention, the strength of the bag is not impaired, and the excess air remaining in the bag is smoothly removed even when the contents such as rice are enclosed, accumulated, and stacked. In addition, it is possible to easily provide a packaging bag for rice cereals that can be discharged to the outside, has no bag breakage due to an increase in internal pressure, and can also prevent the invasion of pests.
以下に本発明の米穀類用包装袋の実施の形態について説明する。本発明の米穀類用包装袋に用いるフィルムは、基本的には特に限定されず、従来、米穀類用包装袋に用いられているプラスチックの単層または多層積層フィルムは、いずれも使用することができる。具体的には、前記したように多層積層フィルムでは、２軸延伸ナイロンフィルム／接着層／アルミ蒸着２軸延伸ポリエチレンテレフタレートフィルム／接着層／直鎖状低密度ポリエチレン層、２軸延伸ナイロンフィルム／接着層／直鎖状低密度ポリエチレン層などの積層フィルムが多用され、また、直鎖状低密度ポリエチレンなどの単層フィルムも使用できる。（以下、２軸延伸ナイロンフィルムはＯＮ、２軸延伸ポリエチレンテレフタレートフィルムはＰＥＴ、直鎖状低密度ポリエチレンはＬＬＤＰＥと略記する。） Embodiments of the packaging bag for rice grains of the present invention will be described below. The film used for the packaging bag for rice cereals of the present invention is basically not particularly limited, and any of the single-layer or multilayer laminated films of plastics conventionally used for packaging bags for rice cereals can be used. it can. Specifically, as described above, in the multilayer laminated film, biaxially stretched nylon film / adhesive layer / aluminum-deposited biaxially stretched polyethylene terephthalate film / adhesive layer / linear low density polyethylene layer, biaxially stretched nylon film / adhesive Laminated films such as a layer / linear low density polyethylene layer are frequently used, and a single layer film such as a linear low density polyethylene can also be used. (Hereinafter, biaxially stretched nylon film is abbreviated as ON, biaxially stretched polyethylene terephthalate film is abbreviated as PET, and linear low density polyethylene is abbreviated as LLDPE.)
上記において、ＯＮとアルミ蒸着ＰＥＴのようなフィルム同士の積層にはドライラミネート法、または接着性樹脂を用いる押し出しラミネート法が利用でき、また、アルミ蒸着ＰＥＴやＯＮ面へのＬＬＤＰＥ層の積層は、フィルム状にしたＬＬＤＰＥをドライラミネート法で積層してもよく、ＬＬＤＰＥ樹脂を押し出しコートして積層してもよい。また、の構成のアルミ蒸着は、不要な場合には除いてもよい。このようにアルミ蒸着層が不要な場合には、の構成に限らず、においても、全層を多層共押し出し法により積層フィルム化してもよく、更に、いずれにおいても多層または単層のインフレーション成形により、直接、所定の折り径のチューブを作成し、チューブ（底シール）形式の包装袋としてもよい。 In the above, the lamination between films such as ON and aluminum vapor-deposited PET can use a dry laminate method or an extrusion laminate method using an adhesive resin, and the lamination of the LLDPE layer on the aluminum vapor-deposited PET or ON surface is as follows. A film-like LLDPE may be laminated by a dry lamination method, or an LLDPE resin may be extruded and laminated. Further, the aluminum vapor deposition having the structure described above may be omitted when unnecessary. Thus, when an aluminum vapor deposition layer is unnecessary, not only the configuration of the above, but also all layers may be formed into a laminated film by a multilayer coextrusion method, and in any case, by multilayer or single layer inflation molding Alternatively, a tube having a predetermined folding diameter may be directly created to form a tube (bottom seal) type packaging bag.
本発明のエア抜き機構を有する包装袋１は、これらのフィルムを袋状に熱接着して製造される包装袋に、米穀類を封入後、集積し、積み重ねた際に、袋内に残留する空気により内圧が急激に上昇し破袋することを防ぐため、内部の空気を外に逃がすための孔を、所定の位置に、所定の大きさと間隔をもって、必要な数で設けることを特徴としており、以下、これらについて説明する。 The packaging bag 1 having the air bleeding mechanism of the present invention is accumulated in a packaging bag manufactured by thermally bonding these films in a bag shape, and then remains in the bag when accumulated and stacked. In order to prevent the internal pressure from suddenly rising due to air and breaking the bag, it is characterized by providing a required number of holes with a predetermined size and interval at a predetermined position for releasing the internal air to the outside. Hereinafter, these will be described.
本発明の包装袋において使用できる袋の形態は、特に限定されず、例えば、三方シール形式、ピロー形式、或いは、インフレーション成形によるチューブ（底シール）形式など、いずれも使用できる。そして、包装袋に設ける脱気用の孔の位置は、通常、包装袋に内容物を封入後、袋を寝かせて集積し、積み重ねているため、この状態で上下、左右などに隣接する包装体によって、設けた孔が塞がれないように設けることが好ましい。 The form of the bag that can be used in the packaging bag of the present invention is not particularly limited, and for example, any of a three-side seal type, a pillow type, and a tube (bottom seal) type by inflation molding can be used. And since the position of the hole for deaeration provided in a packaging bag usually encloses the contents in the packaging bag and then lays the bag together and stacks it, the packaging body adjacent to the top, bottom, left and right in this state Therefore, it is preferable to provide the holes so that the provided holes are not blocked.
具体的には、袋の寸法と内容物の充填量によって、袋の端部（側面）の寸法も変動するため、一律に数値で指定することは難しいが、シール内縁より５ｍｍ以内の個所に孔を設けた場合、破袋しやすくなり、シール内縁より４０ｍｍ以上離れた位置に孔を設けた場合、袋を集積し、積み重ねた際に設けた孔が塞がれてしまう。よって、上部シール部２およびサイドシール部３より５ｍｍ〜４０ｍｍ程度の範囲の孔あけ領域４に孔を設けることが好ましい。 Specifically, the size of the end (side) of the bag also varies depending on the size of the bag and the filling amount of the contents. Therefore, it is difficult to specify a uniform numerical value, but there is a hole within 5 mm from the inner edge of the seal. When it is provided, it becomes easy to break the bag, and when holes are provided at a position 40 mm or more away from the inner edge of the seal, the holes provided when the bags are accumulated and stacked are closed. Therefore, it is preferable to provide a hole in the drilling region 4 in a range of about 5 mm to 40 mm from the upper seal part 2 and the side seal part 3.
包装袋に設ける孔の大きさは、袋内の空気を速やかに脱気させるためには孔径が大きい方が好ましい。しかし、大きすぎると、害虫の侵入、内容物のこぼれ、袋強度の低下などの不都合を生じ、特に害虫の侵入を防ぐ点から、上限として孔径（孔が円形でない場合は最大部分の径）は１０００μｍ以下にすることが好ましい。そして、孔径の下限は、上限ほど厳密ではないが、小さすぎると脱気速度が低下するため、孔の数を多くする必要を生じ、これに伴って孔と孔の間隔も小さくなる。これは結果として袋強度の低下を招くと共に、開孔の作業性も低下させる。従って、孔径の下限は１００μｍ程度にすることが好ましい。以上の理由から、包装袋に設ける孔は、孔径１００〜１０００μｍの範囲が好ましく、１５０〜８００μｍの範囲が更に好ましく、２００〜３００μｍの範囲が最も好ましい。 The size of the hole provided in the packaging bag is preferably larger in order to quickly deaerate the air in the bag. However, if it is too large, there will be inconveniences such as invasion of pests, spilled contents, reduced bag strength, and in particular to prevent the invasion of pests, the upper limit is the hole diameter (the diameter of the maximum part if the hole is not circular) It is preferable to set it to 1000 μm or less. The lower limit of the hole diameter is not as strict as the upper limit, but if it is too small, the deaeration speed decreases, so that it is necessary to increase the number of holes, and accordingly, the interval between the holes also decreases. As a result, the strength of the bag is lowered and the workability of the opening is also lowered. Therefore, the lower limit of the pore diameter is preferably about 100 μm. For the above reasons, the hole provided in the packaging bag is preferably in the range of 100 to 1000 μm, more preferably in the range of 150 to 800 μm, and most preferably in the range of 200 to 300 μm.
孔と孔の間隔は、例えば、脱気性をよくするために孔の数を多くしようとすると、間隔を小さくする必要があり、間隔が小さくなりすぎると包装袋の強度が低下する。また、間隔を大きくすると強度面の問題はないが、孔の数が減少することになり、必要な脱気性を得るためには、孔の径を大きくする必要を生じ、孔径を大きくし過ぎる（１０００μｍを超える）と前述したように、害虫の侵入の問題がある。従って、孔と孔の間隔も一定の範囲に調整することが好ましく、具体的には、６ｍｍ〜１２ｍｍの範囲であることが好ましく、８〜１０ｍｍの範囲であることがさらに好ましい。孔の間隔が６ｍｍ未満の場合、内容物の重量が５ｋｇまでは強度的にも問題ないが、重量が１０ｋｇになると、強度不足となり、落下衝撃などにより孔間が引き裂かれ、破袋の原因になる。また、孔の間隔が１２ｍｍを超える場合は、強度低下の問題はなく下限程厳密ではないが、１袋当たりの孔の数が少なくなり、場合によっては、孔径１０００μｍ以上の孔が必要となるため、害虫の侵入を許すことになり好ましくない。 For example, if the number of holes is increased in order to improve the deaeration property, the distance between the holes needs to be decreased. If the distance is too small, the strength of the packaging bag is lowered. In addition, when the interval is increased, there is no problem in strength, but the number of holes is reduced, and in order to obtain the necessary deaeration, it is necessary to increase the diameter of the holes, and the hole diameter is increased too much ( As described above, there is a problem of the invasion of pests. Therefore, it is preferable to adjust the gap between the holes within a certain range, specifically, it is preferably in the range of 6 mm to 12 mm, and more preferably in the range of 8 to 10 mm. When the distance between the holes is less than 6 mm, there is no problem in terms of strength until the weight of the contents is up to 5 kg. However, when the weight is 10 kg, the strength is insufficient, and the gap between the holes is torn due to a drop impact, etc. Become. In addition, when the distance between the holes exceeds 12 mm, there is no problem of strength reduction and it is not as strict as the lower limit, but the number of holes per bag is reduced, and in some cases, a hole having a hole diameter of 1000 μm or more is required. This is not preferable because it allows the invasion of pests.
尚、孔と孔の間隔と、孔径との関係が前記の条件を満たすために、孔の配列は千鳥状に配列することが好ましい。孔の配列を今後にした千鳥状の配列にすることによって、孔同士の距離が接近しすぎることを防止することができるため、限られた領域内に多数の孔を設けることが可能となる。 In addition, in order that the relationship between the hole-to-hole interval and the hole diameter satisfies the above-described conditions, the holes are preferably arranged in a staggered manner. By making the hole arrangement into a staggered arrangement in the future, it is possible to prevent the distance between the holes from being too close, and therefore it is possible to provide a large number of holes in a limited area.
孔は上部シール部と平行に２〜４列、サイドシール部と平行に２〜５列配列することが好ましい。配列が１行だけだと、孔の総数が少ない為、十分なエア抜きが出来ない為、孔の径を大きくする事が必要となり、害虫の侵入を許すことになり好ましくない。また、上部シール部に５列以上、またはサイドシール部に６列以上孔を配列させた場合には、エア抜きの効果はさほど変わらないにも関わらず、孔の数が多くなってしまう為、袋の強度低下・害虫混入等の不具合が発生してしまう確率が増える事となり好ましくない。 The holes are preferably arranged in 2 to 4 rows parallel to the upper seal portion and 2 to 5 rows parallel to the side seal portion. If the arrangement is only one row, the total number of holes is small, so that sufficient air bleeding cannot be performed. Therefore, it is necessary to increase the diameter of the holes, and it is not preferable because pests are allowed to enter. In addition, when the holes are arranged in 5 rows or more in the upper seal portion or 6 rows or more in the side seal portion, the number of holes is increased despite the fact that the effect of air bleeding is not changed so much. This is not preferable because it increases the probability that defects such as reduced bag strength and pest contamination will occur.
上記のような孔を設ける方法は、加熱針などによる方法が好ましく適用できる。また、包装袋に充填される内容物の量が、５ｋｇ、１０ｋｇと多い場合は、袋の強度を強くする必要があり、大抵の場合、前記したような多層積層フィルムが使用される。このように包装袋が、ナイロンやポリエチレンテレフタレートなどの層を含む多層積層フィルムで形成される場合には、孔を設ける方法として、レーザー光の照射による方法が、更に好ましく適用できる。 As a method for providing the hole as described above, a method using a heating needle or the like can be preferably applied. Further, when the amount of the contents filled in the packaging bag is as large as 5 kg and 10 kg, it is necessary to increase the strength of the bag. In most cases, the multilayer laminated film as described above is used. Thus, when a packaging bag is formed with the multilayer laminated film containing layers, such as nylon and a polyethylene terephthalate, the method by irradiation of a laser beam can be applied more preferably as a method of providing a hole.
上記レーザー光による積層フィルムへの孔あけには、パルス発振タイプのレーザー照射を用いるが、マイクロ秒のオーダーでオン・オフ制御ができるレーザーであれば、スポット状、切り込み状などの断続的な孔あけ加工が可能である。レーザーの種類は、炭酸ガスレーザー、ＹＡＧレーザー、半導体レーザー、アルゴンイオンレーザーなどが利用可能であり、特に限定はされないが、フィルムに孔をあけるためには、フィルムがレーザー発振波長を吸収して発熱し、ミスト化することが必要であり、この点から炭酸ガスレーザーが特に好適に使用できる。 For the hole punching in the laminated film with the above laser beam, pulse oscillation type laser irradiation is used. However, if the laser can be controlled on / off in the order of microseconds, intermittent holes such as spots and cuts are made. Drilling is possible. The type of laser can be a carbon dioxide laser, YAG laser, semiconductor laser, argon ion laser, etc., and is not particularly limited, but in order to make holes in the film, the film absorbs the laser oscillation wavelength and generates heat. However, it is necessary to form a mist. From this point, a carbon dioxide laser can be used particularly suitably.
１・・・包装袋
２・・・上部シール
３・・・サイドシール
４・・・孔領域
５・・・孔
６・・・望ましい孔開け配列
（ａ）（ｂ）（ｃ）（ｄ）・・・シール内縁から孔領域までの距離
（Ａ）・・・横の配列距離
（Ｂ）・・・縦の配列距離
1 ... Packaging bag
2 ... Upper seal
3. Side seal
4 ... hole area
5 ... hole
6 ... Desired drilling arrangement
(A) (b) (c) (d) ... Distance from seal inner edge to hole area
(A) ... Horizontal arrangement distance
(B) ... Vertical arrangement distance
Claims (3)
該包装袋の上部シール部及び、サイドシール部の内縁から５〜１０ｍｍの位置に孔径１００〜１０００μの複数の孔が千鳥状に配列されており、
該孔は上部シール部と平行に２〜４列、サイドシール部と平行に２〜５列で配置されており、
該孔の縦配列距離および横配列距離が６〜１２ｍｍ
であることを特徴とするエア抜き機構を有する包装袋。 A packaging bag formed by heat-bonding a film mainly made of plastic in a bag shape,
A plurality of holes with a hole diameter of 100 to 1000 μ are arranged in a staggered manner at a position of 5 to 10 mm from the inner edge of the upper seal part and side seal part of the packaging bag,
The holes are arranged in 2 to 4 rows parallel to the upper seal portion, and 2 to 5 rows parallel to the side seal portion,
The vertical alignment distance and horizontal alignment distance of the holes are 6 to 12 mm.
A packaging bag having an air venting mechanism.
The air vent according to claim 1 or 2, wherein the film of the packaging bag is a multilayer laminated film, and the plurality of holes of the packaging bag are holes opened by laser light irradiation. Packaging bag with mechanism.
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| JP2015009301A JP2016132481A (en) | 2015-01-21 | 2015-01-21 | Rice bag packing material |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03645A (en) * | 1989-05-30 | 1991-01-07 | Toobi Kasei Kk | Grain bag |
| EP0524539A1 (en) * | 1991-07-24 | 1993-01-27 | B.L. MACCHINE AUTOMATICHE S.p.A. | Bag made of thermoplastic material capable of permitting the outflow of air |
| JPH1170619A (en) * | 1997-08-29 | 1999-03-16 | Dainippon Printing Co Ltd | Packing bag for rice or the like |
| JPH11115981A (en) * | 1997-10-13 | 1999-04-27 | Fujimori Kogyo Kk | Rice bag |
| JP3058613U (en) * | 1998-10-21 | 1999-06-22 | トーホー加工株式会社 | Sac |
| US20060045392A1 (en) * | 2004-08-16 | 2006-03-02 | Roger Bannister | Transversely sealed container |
-
2015
- 2015-01-21 JP JP2015009301A patent/JP2016132481A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03645A (en) * | 1989-05-30 | 1991-01-07 | Toobi Kasei Kk | Grain bag |
| EP0524539A1 (en) * | 1991-07-24 | 1993-01-27 | B.L. MACCHINE AUTOMATICHE S.p.A. | Bag made of thermoplastic material capable of permitting the outflow of air |
| JPH1170619A (en) * | 1997-08-29 | 1999-03-16 | Dainippon Printing Co Ltd | Packing bag for rice or the like |
| JPH11115981A (en) * | 1997-10-13 | 1999-04-27 | Fujimori Kogyo Kk | Rice bag |
| JP3058613U (en) * | 1998-10-21 | 1999-06-22 | トーホー加工株式会社 | Sac |
| US20060045392A1 (en) * | 2004-08-16 | 2006-03-02 | Roger Bannister | Transversely sealed container |
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