JPS5813902B2 - Laminated film for photosensitive paper packaging - Google Patents
Laminated film for photosensitive paper packagingInfo
- Publication number
- JPS5813902B2 JPS5813902B2 JP55045170A JP4517080A JPS5813902B2 JP S5813902 B2 JPS5813902 B2 JP S5813902B2 JP 55045170 A JP55045170 A JP 55045170A JP 4517080 A JP4517080 A JP 4517080A JP S5813902 B2 JPS5813902 B2 JP S5813902B2
- Authority
- JP
- Japan
- Prior art keywords
- density polyethylene
- layer
- laminated film
- polyethylene film
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C3/00—Packages of films for inserting into cameras, e.g. roll-films, film-packs; Wrapping materials for light-sensitive plates, films or papers, e.g. materials characterised by the use of special dyes, printing inks, adhesives
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
本発明は感光紙包装用積層フイルムに関し、詳しくは高
密度ポリエチレンフイルム層と低密度ポリエチレンフイ
ルム層よりなる感光紙包装用積層フイルムに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminated film for packaging photosensitive paper, and more particularly to a laminated film for packaging photosensitive paper comprising a high-density polyethylene film layer and a low-density polyethylene film layer.
従来、感光紙包装用樹脂フイルム袋として、耐透湿性，
引張強度等にすぐれた着色高密度ポリエチレンフイルム
袋が用いられている。Conventionally, resin film bags for photosensitive paper packaging have been made with moisture resistance,
Colored high-density polyethylene film bags with excellent tensile strength are used.
しかし、このフイルムは静摩擦係数が小さくかつ機械的
方向（縦方向）の引裂強度と横方向の引裂強度のバラン
スが悪いだめ、自動包装機械による包装の際、空袋補給
機構が適切に作動せず、たとえば空引取作動をしたり、
過剰引取作動をするなどのトラブルが生じる。However, this film has a small coefficient of static friction and an unbalanced tear strength in the mechanical direction (longitudinal direction) and tear strength in the lateral direction, so the empty bag replenishment mechanism does not work properly when packaging with automatic packaging machines. , for example, perform an empty withdrawal operation,
Trouble such as excessive withdrawal operation may occur.
また作動中に縦裂けが生じたり、包装後の袋を積み重ね
ると滑落や荷崩れが起りやすいなどの欠点がある。Further, there are drawbacks such as vertical tearing during operation, and the tendency for bags to fall off or collapse when stacked after packaging.
一方、この高密度ポリエチレンフイルムの代わりに低密
度ポリエチレンフイルムを用いると、上記欠点は解消す
るが、耐透湿性が小さくまた引張強度も小さいため、包
装機械の作動中にフイルムが不規則に延伸しやすく、ま
た内容物が劣化しやすいなどの欠点があり適当でない。On the other hand, if a low-density polyethylene film is used instead of this high-density polyethylene film, the above-mentioned drawbacks are resolved, but the film has low moisture permeability and low tensile strength, so the film may stretch irregularly during the operation of the packaging machine. It is not suitable because it is easy to use and the contents tend to deteriorate.
本発明は上記従来技術の欠点を解消し、同時に光の透過
を有効に防止できる感光紙包装用のフイルムを提供する
ことを目的とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a film for packaging photosensitive paper which can eliminate the drawbacks of the above-mentioned prior art and at the same time can effectively prevent the transmission of light.
波長１００ｍμ以上の光の透過防止剤を含有する感光紙
包装用積層フイルムにおいて、該積層フイルムの感光紙
に接する内層を高密度ポリエチレンフイルム層とし、外
層を低密度ポリエチレンフイルム層としたことを特徴と
する感光紙包装用積層フイルムを提供するものである。A laminated film for packaging photosensitive paper containing an agent for preventing the transmission of light with a wavelength of 100 mμ or more, characterized in that the inner layer of the laminated film in contact with the photosensitive paper is a high-density polyethylene film layer, and the outer layer is a low-density polyethylene film layer. The present invention provides a laminated film for packaging photosensitive paper.
本発明の積層フイルムの構造は第１図に示される如くで
あり、図中１は高密度ポリエチレンフイルム層であり、
２は低密度ポリエチレンフイルム層である。The structure of the laminated film of the present invention is as shown in FIG. 1, where 1 is a high-density polyethylene film layer,
2 is a low density polyethylene film layer.
なお製袋時は低密度ポリエチレンフイルム層２が外側に
なるようにする。During bag making, the low density polyethylene film layer 2 should be on the outside.
本発明において用いる高密度ポリエチレンは、各種のも
のがあり目的等に応じて適宜選定すればよいが、通常は
密度０．９４〜０．９７ｇ／ｉｍ３，メルトインデック
ス０．０２〜２９７１０分のものが好寸しい。There are various types of high-density polyethylene used in the present invention, and it may be selected appropriately depending on the purpose, etc., but usually one with a density of 0.94 to 0.97 g/im3 and a melt index of 0.02 to 29,710 minutes is used. Good size.
一方、本発明において用いる低密度ポリエチレンについ
ても、各種のものが使用可能であり、それぞれの用途，
目的に応じて適宜定めればよいが，通常は密度０．９１
５〜０．９３４ｇ／ｃｍ３、メルトインデックス０．５
〜５．５ｇ／１０分のものが好ましい。On the other hand, various kinds of low-density polyethylene can be used in the present invention.
It may be determined as appropriate depending on the purpose, but the density is usually 0.91.
5-0.934g/cm3, melt index 0.5
~5.5 g/10 minutes is preferred.
なお本発明の積層フイルムにおいては、上記高密度ポリ
エチレンのフイルム層あるいは低密度ポリエチレンのフ
イルム層のいずれか一方あるいは両者に、波長が１００
ｍμ以上の光の透過防止剤を含有せしめることが必要で
ある。In the laminated film of the present invention, either or both of the high-density polyethylene film layer or the low-density polyethylene film layer has a wavelength of 100 nm.
It is necessary to contain a light transmission preventing agent having a particle diameter of mμ or more.
このように光の透過防止剤を含有せしめることによって
内部への光の透過を遮断し、感光紙の包装に適したフイ
ルムとすることができるのである。By containing a light transmission preventing agent in this manner, the transmission of light into the interior can be blocked and the film can be made suitable for packaging photosensitive paper.
上記の如き光の透過防−剤とじては、様々なものが使用
町能であるが、例えば可視九線や紫外線を透過しないカ
ーボンブラック等を含む暗色系染顔料の使用または前記
顔料と波長１００〜４５０ｍμに吸収域を有するペンゾ
トリアゾール系近紫外線吸収剤との併用などが好適であ
る。Various types of light transmission preventive agents can be used, such as the use of dark-colored dyes and pigments containing carbon black, etc., which do not transmit visible rays or ultraviolet rays, or the use of dark-colored dyes and pigments that do not transmit visible 9-rays or ultraviolet rays, or It is suitable to use it in combination with a penzotriazole-based near ultraviolet absorber having an absorption range of ~450 mμ.
この光の透過防止剤は前述の如く高密度ポリエチレンフ
ィルム層と低密度ポリエチレンフイルム層の両層に含有
させれば遮光効果は最もよいが、いずれか一方の層、特
に袋にした場合に内側となる層（通常は高密度ポリエチ
レンフイルム層）のみに含有させておけば実用上の効果
は充分である。As mentioned above, the light-shielding effect is best if this light transmission preventing agent is contained in both the high-density polyethylene film layer and the low-density polyethylene film layer. The practical effect is sufficient if it is contained only in the layer (usually a high-density polyethylene film layer).
上記の光の透過防止剤をポリエチレンフイルムに含有さ
せるには、例えば高密度ポリエチレンフイルムに含有さ
せる場合、高密度ポリエチレン１００重量部に対して、
上記の光の透過防止剤０．１〜１０重歇部の割合で配合
すればよい。In order to incorporate the above-mentioned light transmission preventive agent into a polyethylene film, for example, when incorporating it into a high-density polyethylene film, based on 100 parts by weight of high-density polyethylene,
The above-mentioned light transmission prevention agent may be blended in a ratio of 0.1 to 10 parts.
さらに本発明では、高密度ポリエチレンフイルム層と低
密度ポリエチレンフイルム層のいずれか一方あるいは両
層に帯電防止剤を含有せしめることも有効である。Furthermore, in the present invention, it is also effective to incorporate an antistatic agent into either or both of the high-density polyethylene film layer and the low-density polyethylene film layer.
このように帯電防止剤を含有せしめれば、フイルムによ
って形成した袋相互間の付着がないため、自動包装機械
において空袋補給機構が適切に作動し、過剰引取作動等
のトラブルがなくなる。If the antistatic agent is contained in this way, the bags formed by the film will not stick to each other, so that the empty bag replenishment mechanism in the automatic packaging machine will operate properly and troubles such as excessive take-up operation will be eliminated.
上記の如き帯電防止剤としては各種のものを使用するこ
とができる。Various kinds of antistatic agents can be used as the above-mentioned antistatic agents.
たとえばイオン生あるいは非イオン性の帯電防市剤のう
ち、アミン系の化合物１たけ炭素数１４以下のアルキル
主鎖を有するアルキルアミン系の化合物
の形の
もので、Ｒは水素原子またはアルキル基、Ｘ１，Ｘ２は
水素原子の一つを水酸基で置換したアルキル基を表わす
。For example, among ionic or non-ionic antistatic agents, it is in the form of an amine compound or an alkylamine compound having an alkyl main chain having 14 or less carbon atoms, where R is a hydrogen atom or an alkyl group, X1 and X2 represent an alkyl group in which one of the hydrogen atoms is substituted with a hydroxyl group.
〕を除く帯電防止剤であって、その１重量係水溶液に湿
潤させた紙と包装すべき感光紙を暗所で１４時間接触し
ても感光状態の発現しないもの、具体的にはジオキシエ
チレンステアリン酸アミンやステアリン酸モノグリセリ
ド等が好適に用いられ、これらの含有量は特に制限はな
いが、高密度ポリエチレンあるいは低密度ポリエチレン
１００重量部に対して０．０１〜０．５重量部の範囲で
選定することが好ましい。], which do not develop a photosensitive state even if paper moistened with a 1 weight aqueous solution thereof and photosensitive paper to be packaged are in contact for 14 hours in a dark place, specifically dioxyethylene Amine stearate, monoglyceride stearate, etc. are preferably used, and the content thereof is not particularly limited, but is in the range of 0.01 to 0.5 parts by weight per 100 parts by weight of high-density polyethylene or low-density polyethylene. It is preferable to select
なお、この帯電防市剤を高密度ポリエチレンフイルム層
と低密度ポリエチレンフイルム層の両層に含有せしめる
場合には、両層の帯電防止剤は必ずしも同じであること
を要せず異なるものであっても差支えない６また、本発
明の積層フイルムの層厚は各種条件により変動し一義的
に定めることはできないが、一般的には高密度ポリエチ
レンフイルム層，低密度ポリエチレンフイルム層共に５
〜１００μ，好ましくは６〜５０μとし、さらに両層の
合計を２０μ以上、好ましくは３０〜６０μの範囲に調
節し、かつ両層の厚さの比を、高密度ポリエチレンフイ
ルム層／低密度ポリエチレンフイルム層として０．５〜
７、好ましくは１〜６とすべきである。In addition, when this antistatic agent is contained in both the high-density polyethylene film layer and the low-density polyethylene film layer, the antistatic agents in both layers do not necessarily have to be the same, but may be different. In addition, the layer thickness of the laminated film of the present invention varies depending on various conditions and cannot be unambiguously determined, but generally both the high-density polyethylene film layer and the low-density polyethylene film layer have a thickness of 5.
~100μ, preferably 6 to 50μ, and further adjust the total of both layers to 20μ or more, preferably 30 to 60μ, and the ratio of the thickness of both layers to high density polyethylene film layer/low density polyethylene film layer. 0.5~ as a layer
7, preferably 1-6.
なお耐透湿度については、本発明の積層フイルムは実用
上の機械的強度を発現するフイルム厚において９−０（
ｇ／ｍ２・日）の透湿度が合格目標とされ、それ以下の
値になるようにすれば使用七充分とされている。Regarding moisture permeation resistance, the laminated film of the present invention has a film thickness of 9-0 (
The moisture permeability of g/m2.day) is set as a passing target, and if the value is lower than that, it is considered to be 70 minutes in use.
本発明の積層フイルムは全層厚，層厚比を適宜調節する
ことにより、自在に上記条件を満足せしめることができ
る。The laminated film of the present invention can freely satisfy the above conditions by appropriately adjusting the total layer thickness and layer thickness ratio.
本発明の積層フイルムを製造するにあたっては、高密度
ポリエチレンおよび低密度ポリエチレンをフイルム状に
共押出ししつつ融着させて積層フイルムとするか、ある
いは高密度ポリエチレン，低密度ポリエチレンをそれぞ
れフイルム化した後、接着剤等にて接着して積層フイル
ムとすればよいが、前者の共押出ししつつ融着させる方
法は、積層フイルムを安価かつ容易に量産できるので好
ましい製造法である。In manufacturing the laminated film of the present invention, high-density polyethylene and low-density polyethylene are co-extruded into a film and fused to form a laminated film, or high-density polyethylene and low-density polyethylene are respectively formed into films and then However, the former method of co-extruding and fusing together is a preferred manufacturing method because the laminated film can be mass-produced inexpensively and easily.
上述の如き組成よりなる本発明の積層フイルムを用いて
製作した袋は、従来の感光紙包装用袋に比べて、すぐれ
た耐透湿性、引張強度等を有すると共に、適度の表面摩
擦と充分な耐縦裂性を有するため自動包装機械を用いて
も、袋の引取作動が正常に行なわれ、空引取りをしたり
二枚以上の袋を同時に引取るようなトラブルがない。Bags manufactured using the laminated film of the present invention having the composition as described above have superior moisture permeability and tensile strength, etc., as well as moderate surface friction and sufficient strength compared to conventional photosensitive paper packaging bags. Due to its longitudinal tear resistance, even when using an automatic packaging machine, the bag can be taken normally, and there is no problem such as empty bag taking or two or more bags being taken at the same time.
また、包装作業中あるいは終了後に高く橿み重ねても、
滑落したり荷崩れするおそれがほとんどない。In addition, even if the wrapping is piled up high during or after the wrapping process,
There is almost no risk of falling or the load collapsing.
ここで特に注目すべきことは、袋の外面となるべき積層
フイルムの低密度ポリエチレン層側の静摩擦係数は、単
層の低密度ポリエチレンフイルムのそれに比して、かな
り高いという意外なしかも好都合な結果が得られたこと
である。What is particularly noteworthy here is that the coefficient of static friction on the low-density polyethylene layer side of the laminated film that forms the outer surface of the bag is considerably higher than that of a single-layer low-density polyethylene film, an unexpected but advantageous result. was obtained.
それ故、本発明の積層フイルムは、特に感光紙の自動包
装に極めて適したものである。Therefore, the laminated film of the present invention is particularly suitable for automatic packaging of photosensitive paper.
次に本発明を実施例によりさらに詳しく説明する。Next, the present invention will be explained in more detail with reference to Examples.
実施例
メルトインデックス０．０５５ｇ／１０分の高密度ポリ
エチレンに光の透過防止剤としてカーボンブラック３．
６重量係および帯電防止剤としてアルキルジエタノール
アミン０．１重量係を含有せしめてなる層厚３６μの高
密度ポリエチレンフイルム層と、メルトインデックス３
ｌ／１０分の低密度ポリエチレンに光の透過防止剤とし
てカーボンブラック３，６重量係および帯電防市剤とし
てアルキルジエタノールアミン０．３重量係を含有せし
めてなる層厚９μの低密度ポリエチレンフイルム層を積
層した。Example: High-density polyethylene with a melt index of 0.055 g/10 minutes and carbon black 3.
A high-density polyethylene film layer with a layer thickness of 36 μm containing 6 weight factors and 0.1 weight factor of alkyl diethanolamine as an antistatic agent, and a melt index of 3.
A low-density polyethylene film layer having a thickness of 9 μm is made by adding 3.6 parts by weight of carbon black as a light transmission prevention agent and 0.3 parts by weight of alkyl diethanolamine as an antistatic agent to low-density polyethylene of l/10 min. Laminated.
続いてこのフイルムの各種物性を測定した。Subsequently, various physical properties of this film were measured.
結果を第１表に示す。比較例 １
実施例の高密度ポリエチレンフイルム層と同一組成の層
厚４５μの単層フイルムを作成し、このフイルムの各種
物性を測定した。The results are shown in Table 1. Comparative Example 1 A single-layer film having the same composition as the high-density polyethylene film layer of Example and having a layer thickness of 45 μm was prepared, and various physical properties of this film were measured.
結果を第１表に示す。The results are shown in Table 1.
比較例 ２
実施例の低密度ポリエチレンフイルム層と同一組成の層
厚４５μの単層フイルムを作成し、このフイルムの各種
物性を測定した。Comparative Example 2 A single-layer film having the same composition as the low-density polyethylene film layer of Example and having a layer thickness of 45 μm was prepared, and various physical properties of this film were measured.
結果を第１表に示す。The results are shown in Table 1.
第１図は本発明の積層フイルムの概念図であり、図中、
１は高密度ポリエチレンフィルム層，２は低密度ポリエ
チレンフイルム層である。FIG. 1 is a conceptual diagram of the laminated film of the present invention, and in the figure,
1 is a high-density polyethylene film layer, and 2 is a low-density polyethylene film layer.
Claims (1)
光紙包装用積層フイルムにおいて、該積層フイルムの感
光紙に接する内層を高密度ポリエチレンフイルム層とし
、外層を低密度ポリエチレンフイルム層としたことを特
徴とする感光紙包装用積層フイルム。 ２ 高密度ポリエチレンフイルム層と低密度ポリエチレ
ンフイルム層との厚さの比が、０．５〜７：１である特
許請求の範囲第１項記載の積層フイルム。[Scope of Claims] 1. In a laminated film for packaging photosensitive paper containing an agent for preventing the transmission of light with a wavelength of 100 mμ or more, the inner layer of the laminated film in contact with the photosensitive paper is a high-density polyethylene film layer, and the outer layer is a low-density polyethylene film. A laminated film for photosensitive paper packaging characterized by having a layered structure. 2. The laminated film according to claim 1, wherein the ratio of the thicknesses of the high-density polyethylene film layer and the low-density polyethylene film layer is 0.5 to 7:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55045170A JPS5813902B2 (en) | 1980-04-08 | 1980-04-08 | Laminated film for photosensitive paper packaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55045170A JPS5813902B2 (en) | 1980-04-08 | 1980-04-08 | Laminated film for photosensitive paper packaging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56142527A JPS56142527A (en) | 1981-11-06 |
| JPS5813902B2 true JPS5813902B2 (en) | 1983-03-16 |
Family
ID=12711784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55045170A Expired JPS5813902B2 (en) | 1980-04-08 | 1980-04-08 | Laminated film for photosensitive paper packaging |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813902B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6338962Y2 (en) * | 1982-05-12 | 1988-10-13 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6218548A (en) * | 1985-07-17 | 1987-01-27 | Fuji Photo Film Co Ltd | Material for packaging photosensitive material |
| JPH0652400B2 (en) * | 1986-09-30 | 1994-07-06 | 富士写真フイルム株式会社 | Packaging bag for photographic light-sensitive material, method for laminating the same, and method for wrapping photographic light-sensitive material |
| JPH0677135B2 (en) * | 1986-09-30 | 1994-09-28 | 富士写真フイルム株式会社 | Packaging material for photographic materials |
| JPH0428097Y2 (en) * | 1986-11-27 | 1992-07-07 | ||
| JPH0613202B2 (en) * | 1987-01-23 | 1994-02-23 | 富士写真フイルム株式会社 | Photosensitive material packaging film |
| JPH0613200B2 (en) * | 1987-01-26 | 1994-02-23 | 富士写真フイルム株式会社 | Packaging material for photosensitive materials |
| JP2578332B2 (en) * | 1987-02-06 | 1997-02-05 | 富士写真フイルム株式会社 | Sheet-shaped photographic photosensitive material light-shielding bag for loading into a light room |
| JPH0833621B2 (en) * | 1988-02-18 | 1996-03-29 | 富士写真フイルム株式会社 | Packaging material for photosensitive materials |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5619087Y2 (en) * | 1976-04-07 | 1981-05-07 |
-
1980
- 1980-04-08 JP JP55045170A patent/JPS5813902B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6338962Y2 (en) * | 1982-05-12 | 1988-10-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56142527A (en) | 1981-11-06 |
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