JP3156142B2 - Core for photographic photosensitive material and method of manufacturing the same - Google Patents
Core for photographic photosensitive material and method of manufacturing the sameInfo
- Publication number
- JP3156142B2 JP3156142B2 JP22878192A JP22878192A JP3156142B2 JP 3156142 B2 JP3156142 B2 JP 3156142B2 JP 22878192 A JP22878192 A JP 22878192A JP 22878192 A JP22878192 A JP 22878192A JP 3156142 B2 JP3156142 B2 JP 3156142B2
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- core
- buffer layer
- paper
- layer
- photographic
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、写真感光材料用巻芯に
関し、詳しくは巻状ならびに加工精度、廃棄性が改良さ
れた巻芯及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core for photographic light-sensitive materials, and more particularly to a core having improved winding form, processing accuracy, and disposability, and a method for producing the same.
【０００２】[0002]
【発明の背景】一般に写真感光材料の製造においては、
所定の切り巾にスリット加工した後に巻芯に巻取られ、
規定長さを巻き上げてからこのロール状を成す写真感光
材料を遮光性のある材料で包んでいる。BACKGROUND OF THE INVENTION Generally, in the production of photosensitive materials,
After slitting to a predetermined cutting width, it is wound on the core,
The rolled photographic light-sensitive material is wrapped with a light-shielding material after winding up a specified length.
【０００３】このロール状の写真感光材料は、保管条件
や、物流条件、および使用時の取り扱い性の点から巻始
めから巻終わりまでできるだけ均一でかつ固く巻かれて
いる事が理想的である。[0003] Ideally, the roll-shaped photographic light-sensitive material is wound as uniformly and firmly as possible from the beginning to the end of winding from the viewpoints of storage conditions, distribution conditions, and handling during use.
【０００４】しかしながら、このロール状の写真感光材
料は巻芯部分に写真感光材料の厚み分だけ段差が生じて
おり、固く巻こうとするほどこの段差によって集中する
圧力も高くなり、結果的に写真感光材料の巻芯部に凸状
の変形（押され）や感度異常を生じさせていた。However, in the roll-shaped photographic light-sensitive material, there is a step in the core portion corresponding to the thickness of the photographic light-sensitive material. The core portion of the photosensitive material has a convex deformation (pushed) and an abnormal sensitivity.
【０００５】写真感光材料は高価なものであるが、上記
のような異常によって約20％が使用できない場合もあっ
た。[0005] Although photographic light-sensitive materials are expensive, about 20% of them are sometimes unusable due to the above-mentioned abnormalities.
【０００６】そこでこれらの問題に対して下記のような
提案がされていた。Therefore, the following proposals have been made for these problems.
【０００７】例えば、実開昭59-165861号、実開昭62-16
4275号、実公平2-24116号、実開昭1-142941号、特開平2
-116882号には従来の巻芯を改良し、感光材料端末の段
差による影響を防止するために、緩衝層を設け、緩衝材
としては弾性接着剤、樹脂発泡体、低密度の紙や合成紙
を用いている技術が開示されている。又、例えば、実開
昭63-14072号、実開平3-8689号、実開平3-8690号等に
は、緩衝層によらず巻芯外周部に切り欠きを設けること
で同様の効果を狙った例も開示されている。For example, Japanese Utility Model Laid-Open No. 59-165861, Japanese Utility Model Laid-Open No. 62-16
No. 4275, No. 2-24116, No. 1-142941, No. 2
-116882 improves the conventional winding core and provides a buffer layer to prevent the effect of the step of the photosensitive material terminal. The cushioning material is elastic adhesive, resin foam, low density paper or synthetic paper. Are disclosed. In addition, for example, in Japanese Utility Model Laid-Open No. 63-14072, Japanese Utility Model No. 3-8689, Japanese Utility Model Laid-open No. 3-8690, etc., the same effect is aimed at by providing a notch in the outer periphery of the core regardless of the buffer layer. Examples are also disclosed.
【０００８】写真感光材料を巻き付ける巻芯材として、
写真感光材料巻芯部に生じる変形（押され）や、圧力に
よる感度の異常を防止するために緩衝層を設けることは
効果が有るが、樹脂材料、各種ゴム、弾性接着剤等を巻
芯材に接着しているために、巻芯が使用後廃棄物となっ
た時に廃棄性、再利用性ともに劣っているという問題が
有った。As a core material for winding a photographic material,
It is effective to provide a buffer layer to prevent deformation (push) occurring in the core of the photographic photosensitive material and abnormal sensitivity due to pressure. However, resin materials, various rubbers, elastic adhesives, etc. are used for the core material. Therefore, when the core becomes waste after use, there is a problem in that both the disposability and the reusability are poor.
【０００９】すなわち、これらの緩衝材として用いられ
ている物質は、例えば廃棄された場合には自然分解しな
いものであり、焼却処分するにしても有毒ガスの発生や
焼却時の高温による焼却炉の傷みなど不具合の発生があ
る。That is, the substances used as these buffer materials do not decompose spontaneously when discarded. For example, even if they are incinerated, toxic gases are generated or the incinerator is heated due to high temperatures during incineration. There are defects such as damage.
【００１０】又再利用するには、該緩衝層を分離せねば
ならず手間がかかるのみならず、実際には緩衝層が強固
に接着されているため分別が不可能なものもあった。[0010] Further, in order to recycle, the buffer layer must be separated, which is troublesome. In addition, in some cases, the buffer layer is firmly adhered and cannot be separated.
【００１１】廃棄物の処理については、各国で法律化さ
れており、特にヨーロッパにおいては材料が単一材料か
らなることが要求されており、この点からも不充分なも
のである。[0011] Waste treatment is regulated in each country, and in Europe, in particular, it is required that the material be composed of a single material, which is also insufficient.
【００１２】また、緩衝性のある材料として例えば不織
布を用いた場合でも、一般には強度の向上のために、各
種合成繊維例えば、繊維としてはナイロン、レーヨン、
ポリエステル等を用いて不織布としたり、またこれらの
合成繊維をパルプと20％〜60％程度混合しているのが一
般的である。Even when a non-woven fabric is used as a material having a buffering property, various synthetic fibers such as nylon, rayon, and the like are generally used for improving strength.
Generally, a non-woven fabric is formed using polyester or the like, and these synthetic fibers are generally mixed with pulp in an amount of about 20% to 60%.
【００１３】これらの合成繊維は廃棄性と再利用性の観
点からは問題があり、廃棄性と再利用性の向上のために
は理想的であるこれらの補強を用いないパルプ単一素材
とすると、著しく強度が低下し巻芯加工に適さなかっ
た。[0013] These synthetic fibers have problems from the viewpoints of disposability and reusability, and are ideal for improving disposability and reusability. , Markedly reduced in strength and not suitable for winding core processing.
【００１４】例えば、巻芯の加工上で巻芯に加工する材
料には０．３ｋｇ／１５ｍｍ巾以上の抗張力強度が必要
であり、従来例で知られている１５倍発泡ポリスチレン
では約６ｋｇ／１５ｍｍ巾であるのに対してパルプ単一
素材からなる乾式不織布では乾燥状態で０．３〜０．６
ｋｇ／１５ｍｍ巾の抗張力強度を示すが、張り合わせの
ため接着剤を塗布した場合は湿潤状態となり抗張力強度
は０．１〜０．３ｋｇ／１５ｍｍ巾と大幅に低下するた
め、巻芯に巻き付けることが出来なかった。For example, a material to be processed into a core on the processing of the core requires a tensile strength of 0.3 kg / 15 mm width or more, and a 15-fold expanded polystyrene known in a conventional example. Is about 6 kg / 15 mm width , whereas a dry non-woven fabric made of a single pulp material is 0.3 to 0.6 in a dry state.
It shows tensile strength of kg / 15mm width. However, if an adhesive is applied for lamination, it will be in a wet state and the tensile strength will be greatly reduced to 0.1 to 0.3kg / 15mm width. I could not do it.
【００１５】また、巻芯外周上に切り欠きを設ける方法
では、暗室において感光材料末端を切り欠きに完全にあ
わせなくてはならず、設備が複雑になったり作業工数が
増加することによる能率の低下が避けられなかった。In the method in which the notch is provided on the outer periphery of the core, the end of the photosensitive material must be completely aligned with the notch in a dark room, and the efficiency is increased due to complicated equipment and an increase in the number of working steps. The decline was inevitable.
【００１６】一方、これらの巻芯が使用される切断、巻
取り設備（スリッター）は、近年特に高度に自動化、複
雑化してきており生産性も大幅に向上している反面、使
用する巻芯に対して要求される寸法精度も一段と狭まっ
てきているのが実態である。On the other hand, the cutting and winding equipment (slitter) using these cores has recently been particularly highly automated and complicated, and the productivity has been greatly improved. In fact, the required dimensional accuracy is becoming narrower.
【００１７】しかしながら、従来は該巻芯に含まれる水
分や酸化還元性物質の、写真感光材料に対する影響にの
み着目していたため、該巻芯を所定寸法に切断後、段ボ
ール包装として保管しておき、使用される直前に乾燥処
理を所定の温度と時間、例えば50℃、24時間の乾燥条件
で行い、含水率を８％以下に調整していた。Conventionally, however, attention has been paid only to the effect of moisture and a redox substance contained in the core on the photographic material. Therefore, the core is cut into a predetermined size and stored in a cardboard package. Immediately before use, a drying treatment was performed at a predetermined temperature and time, for example, at 50 ° C. for 24 hours under a drying condition, and the water content was adjusted to 8% or less.
【００１８】この時、乾燥処理によって巻芯の切り巾が
収縮するため、切断設定寸法は一定の率で収縮分を加算
した寸法で切断され乾燥後に所定の寸法となるように決
められていたが、巻芯の切断加工による寸法ばらつきに
加えて乾燥の進行度によるばらつきが例えば段ボール包
装中の上中下の位置による差や季節間で変動する持ち込
み水分量等によって発生するため、要求される寸法精度
を満足することができなかった。At this time, since the cutting width of the core shrinks due to the drying process, the cut setting dimension has been determined to be a dimension obtained by adding the shrinkage at a constant rate and to be a predetermined dimension after drying. In addition to the dimensional variation due to the cutting of the core, the variation due to the progress of drying occurs due to, for example, the difference between the upper, middle and lower positions in the cardboard packaging and the amount of moisture brought in between seasons, etc., the required dimensions The accuracy could not be satisfied.
【００１９】さらに寸法精度を向上させるために、巻芯
材の含水率管理の実施や季節毎に切断設定を変更した
り、含水率別の収縮率にもとづいてその都度設定値を計
算する方法等色々な方法が実施されてきたが、いずれも
含水率管理や計算、在庫管理等で非常に煩雑でかつ複雑
な作業が必要で実施が困難であり、根本的解決策とは言
えないものであり設備トラブルや顧客のクレームとなっ
ていた。In order to further improve the dimensional accuracy, control of the water content of the core material, change of the cutting setting for each season, calculation of the set value each time based on the shrinkage rate for each water content, etc. Various methods have been implemented, but all of them are very complicated and complicated work is required in water content management, calculation, inventory management, etc., and it is difficult to implement, and it can not be said to be a fundamental solution. Equipment troubles and customer complaints.
【００２０】[0020]
【発明の目的】上記のような問題に対し本発明の目的
は、廃棄性、再利用性ともに優れ、写真感光材料の巻芯
部に感光材料末端の段差の影響を与えず、かつ巻芯基材
の含水率のばらつきによる切断寸法ばらつきを減少させ
た写真感光材料用巻芯およびその製造方法を提供するこ
とにある。SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide both excellent recyclability and reusability, without affecting the step of the end of the photosensitive material on the core of the photographic material, It is an object of the present invention to provide a photographic photosensitive material core in which variations in cut dimensions due to variations in the moisture content of the material are reduced, and a method for manufacturing the same.
【００２１】[0021]
【発明の構成】上記目的は、紙製の巻芯と、かつ実質的
に木材パルプからなる１層以上の緩衝層と、該緩衝層を
片面もしくは両面で補強する紙製の補強層を含有するこ
とを特徴とする写真感光材料用巻芯並びに前記緩衝層を
スパイラル加工工程の前に前記紙製の補強層と貼り合わ
せておくことと、スパイラル加工後、荒切りされた巻芯
を含水率が８％以下になるように乾燥処理を行い、所定
の寸法に切断加工することを特徴とする写真感光材料用
巻芯の製造方法によって達成された。Above object structure of the INVENTION, the paper of the core, or One substantially wood pulp or Ranaru least one layer of the buffer layer, a reinforcing layer made of paper to reinforce the buffer layer on one side or both sides and keeping bonded with the paper-made reinforcing layer before photographic light-sensitive material for the winding core and the buffer layer spiral machining process, characterized in that it contains a post spiral machining, the rough cut has been the core This is achieved by a method for producing a core for photographic light-sensitive material, wherein a drying treatment is carried out so that the water content is 8% or less, and a cutting process is performed to a predetermined size.
【００２２】以下、本発明について詳細に説明する。Hereinafter, the present invention will be described in detail.
【００２３】補強層を構成する補強紙として用いられる
紙は、抗張力強度が0.3kg/15mm巾以上、好ましくは0.3
〜8.0/15mm巾である紙であり、特にポリエチレンラミネ
ート層や樹脂等を含まない材料であれば、クラフト紙、
上質紙、チップボール紙、再生紙等がある。抗張力強度
は、ＪＩＳ8113に示される定速伸張型引張試験機によっ
て試験片が破断した荷重指示値である。The paper used as the reinforcing paper constituting the reinforcing layer has a tensile strength of 0.3 kg / 15 mm width or more, preferably 0.3 kg / 15 mm width.
~ 8.0 / 15mm width paper, especially kraft paper, if it does not contain polyethylene laminate layer or resin
There are high quality paper, chip cardboard, recycled paper and the like. Tensile strength is a load indicating value at which a test piece is broken by a constant-speed extension-type tensile tester shown in JIS8113.
【００２４】緩衝層としては、密度が0.1g/cm3以下好ま
しくは0.1〜0.03g/cm3の木材パルプからなる材料であり
緩衝性を有する材料であれば使用することができ、例え
ば不織布、段ボール用中芯材、和紙、などがあり特に好
ましくは不織布である。密度は、次式によって求められ
る。[0024] As the buffer layer, it is possible density 0.1 g / cm 3 or less, preferably to be used as long as the material has and cushioning materials consisting 0.1~0.03g / cm 3 of wood pulp, for example non-woven fabric, There are a core material for corrugated cardboard, Japanese paper, and the like, and particularly preferred is a nonwoven fabric. The density is determined by the following equation.
【００２５】 Ｄ（g/cm3）＝Ｗ（g/cm3）／〔Ｔ(mm)×10〕 Ｄ：密度，Ｗ：坪量，Ｔ：厚さ 巻芯材として用いられる紙は、クラフト紙、白ボール
紙、上質紙、チップボール紙、再生紙等である。これら
の巻芯材は、複数の紙を積層して使用しても良く、例え
ば巻芯内面に、こすれ等の防止のため上質紙、白ボール
紙を内面の補強（内面補強層）に用い、巻芯の強度のた
めにクラフト紙を積層することができる。この場合、ク
ラフト紙が巻芯基材層に該当する。D (g / cm 3 ) = W (g / cm 3 ) / [T (mm) × 10] D: density, W: basis weight, T: thickness Paper used as a core material is kraft paper. Paper, white cardboard, woodfree paper, chip cardboard, recycled paper, and the like. These core materials may be used by laminating a plurality of papers. For example, on the inner surface of the core, high-quality paper or white cardboard is used to reinforce the inner surface (inner reinforcing layer) to prevent rubbing, etc. Kraft paper can be laminated for core strength. In this case, kraft paper corresponds to the core substrate layer.
【００２６】この不織布については、多くの製造方法が
あり不織布のウエブを形成する方法としては、大別して
主に水中で繊維の集合対を形成させる湿式法と大気中で
行われる乾式法とがある。There are many methods for producing this nonwoven fabric, and the method of forming the web of the nonwoven fabric is roughly classified into a wet method in which a set of fibers is formed mainly in water and a dry method performed in the air. .
【００２７】これらの方法によって形成されたウエブに
おける繊維の配列は、ウエブの長さ方向に並んでいる平
行式と呼ばれるものや、長さ方向と直行しているもの、
あるいは両方の組み合わせによる複合式と呼ばれるもの
などがある。The arrangement of the fibers in the web formed by these methods may be a parallel type which is arranged in the longitudinal direction of the web, a fiber which is perpendicular to the longitudinal direction,
Alternatively, there is a combination called a combination of both.
【００２８】これらはその繊維の配列方向に最大の強度
を持たせる目的で行われるものであり、本発明の実施に
あたってはこれらのいずれを用いても良い。These are performed for the purpose of imparting the maximum strength in the fiber arrangement direction, and any of these may be used in the practice of the present invention.
【００２９】上記のような緩衝層は、該巻芯表面の感光
材料の巻付けられる全面にわたって巻付けられているも
のであって、その厚さは感光材料の厚み以上であれば良
い。The buffer layer as described above is wound over the entire surface of the core on which the photosensitive material is wound, and the thickness thereof may be at least the thickness of the photosensitive material.
【００３０】緩衝層と補強層は、該巻芯を巻芯の巻付け
加工工程であるスパイラル加工をする前に、片面もしく
は両面で貼りあわされていることが好ましいが、スパイ
ラル加工部分より手前で貼りあわせても良く、必ずしも
これに限定されない。The buffer layer and the reinforcing layer are preferably bonded on one side or both sides before the core is subjected to spiral processing as a winding step of the core. They may be pasted together, and are not necessarily limited to this.
【００３１】巻芯材、緩衝材、補強材の巻き付け方向に
ついては特に限定されない。The winding direction of the core material, the cushioning material, and the reinforcing material is not particularly limited.
【００３２】この貼りあわせを行う場合は、緩衝層が接
着剤によって湿潤状態となり著しく強度低下し、貼りあ
わせ工程での不具合を発生させることがないように、補
強層側に接着剤を塗布あるいは吹き付け等の方法で付け
ることが望ましい。When performing this bonding, the adhesive is applied or sprayed on the reinforcing layer side so that the buffer layer is moistened by the adhesive and the strength is remarkably reduced, so that no trouble occurs in the bonding step. It is desirable to attach by such a method.
【００３３】又、片面で補強し補強層を内側に使用する
場合は、スパイラル加工時に補強紙を別に供給し巻き付
けても良い。When the reinforcing layer is used inside by reinforcing on one side, reinforcing paper may be separately supplied and wound during spiral processing.
【００３４】各構成層の貼りあわせは、水溶性接着剤、
エマルジョン接着剤を用いて行うことができ水溶性接着
剤には、でんぷん、カゼイン、ポリアクリル酸ソーダな
どがありエマルジョン接着剤には、酢酸ビニル、ＳＢ
Ｒ、ＮＢＲ、アクリレート、塩化ビニルなどがあり、こ
れらを配合したものを用いることもできる。The bonding of the constituent layers is performed by using a water-soluble adhesive,
Emulsion adhesives can be used. Water-soluble adhesives include starch, casein, sodium polyacrylate, etc. Emulsion adhesives include vinyl acetate, SB
There are R, NBR, acrylate, vinyl chloride and the like, and a mixture of these can also be used.
【００３５】上記のような条件で巻き付け加工された巻
芯を、切断加工上で最も切断収率の良い寸法に荒ぎり
し、温風乾燥、減圧乾燥、赤外線乾燥等の乾燥手段で巻
芯の含水率が８％以下、好ましくは８％〜４％となるま
で所定の温度、湿度、圧力、時間で乾燥させた後要求す
る切断寸法に切断する。The winding core wound under the above conditions is roughly cut to a size having the best cutting yield in the cutting process, and the core is dried by a drying means such as hot air drying, reduced pressure drying, or infrared drying. After drying at a predetermined temperature, humidity, pressure and time until the water content becomes 8% or less, preferably 8% to 4%, the product is cut into required cutting dimensions.
【００３６】又、上記の方法は、緩衝層あるいは補強層
を持たない巻芯についても寸法精度を向上させることが
できるので、必ずしも本発明の巻芯の製造方法のみに限
定されない。Further, the above method can improve the dimensional accuracy of a core having no buffer layer or reinforcing layer, and is not necessarily limited to the method of manufacturing the core of the present invention.
【００３７】本発明の巻芯の製造方法としては、上記の
方法が好適である。As the method for producing the core of the present invention, the above method is preferable.
【００３８】上記手段により構成された写真感光材料用
巻芯においては、感光材料の巻芯末端部に感光材料基材
の厚みによって生じる段差を緩衝層で吸収することによ
り、感光材料巻芯部の変形や感度異常の発生を起こさな
いよう働く。In the core for photographic light-sensitive material constituted by the above means, a step caused by the thickness of the light-sensitive material base at the end of the core of the light-sensitive material is absorbed by the buffer layer, whereby the core of the light-sensitive material core is absorbed. Works to prevent deformation and abnormal sensitivity.
【００３９】さらに補強紙を用いることにより、従来廃
棄性、再利用性ともに理想的であったが巻芯材として巻
き付け加工に用いるには強度が低いため使用できなかっ
たパルプ100％の緩衝材を利用できるようになり、巻芯
を各層に分離することなく、廃棄、再利用する事が出来
る。Furthermore, by using reinforcing paper, a 100% pulp cushioning material, which was conventionally ideal for both disposal and reusability, but could not be used because of its low strength for use in winding processing as a core material. It can be used and can be discarded and reused without separating the core into layers.
【００４０】又、所定切断寸法に切断する前に乾燥処理
を行うことにより、巻芯材は使用される状態と同一の状
態に収縮が完了しているため、寸法ばらつきを大幅に減
少させることができる。Further, by performing a drying process before cutting to a predetermined cutting size, the core material has been completely shrunk to the same state as used, so that dimensional variations can be greatly reduced. it can.
【００４１】次に本発明の写真感光材料用巻芯の実施例
について図１から図８により説明する。Next, an embodiment of the core for a photographic light-sensitive material of the present invention will be described with reference to FIGS.
【００４２】図１は本発明の巻芯に写真感光材料が巻付
けられた状態の側面図、図２は図１の写真感光材料の巻
芯末端部分の拡大図、図３から図８は巻芯の構成を示す
断面図である。FIG. 1 is a side view showing a state in which a photographic photosensitive material is wound around a core according to the present invention, FIG. 2 is an enlarged view of a core end portion of the photographic photosensitive material in FIG. 1, and FIGS. It is sectional drawing which shows the structure of a core.
【００４３】図１において写真感光材料４は巻芯基材層
１と緩衝層２、補強層３で構成される巻芯に巻付けられ
ている。In FIG. 1, the photographic light-sensitive material 4 is wound around a core constituted by a core substrate layer 1, a buffer layer 2 and a reinforcing layer 3.
【００４４】図２は写真感光材料４の巻芯端末部５の厚
みによる段差が緩衝層２と補強層３によって緩衝されて
いる状態を示している。FIG. 2 shows a state in which a step due to the thickness of the core end portion 5 of the photographic photosensitive material 4 is buffered by the buffer layer 2 and the reinforcing layer 3.
【００４５】図３は緩衝層２を片面で補強し巻芯表面側
に緩衝層２がくるように構成された写真感光材料用巻芯
で、補強層３、緩衝層２、巻芯基材層１と内面補強層６
が接着積層されたものである。FIG. 3 shows a core for a photographic light-sensitive material in which the buffer layer 2 is reinforced on one side and the buffer layer 2 comes to the surface of the core. The reinforcing layer 3, the buffer layer 2, and the core substrate layer 1 and inner layer 6
Are bonded and laminated.
【００４６】図４は緩衝層２を片面で補強し巻芯表面側
に補強層３がくるように構成された写真感光材料用巻芯
で緩衝層２、補強層３、巻芯基材層１と内面補強層６が
接着積層されたものである。FIG. 4 shows a core for a photographic light-sensitive material in which the buffer layer 2 is reinforced on one side and the reinforcing layer 3 is provided on the surface of the core. The buffer layer 2, the reinforcing layer 3, and the core substrate layer 1 are shown. And the inner surface reinforcing layer 6 are bonded and laminated.
【００４７】図５は緩衝層２を両面で補強した写真感光
材料用巻芯で補強層３、緩衝層２、補強層３、巻芯基材
層１と内面補強層６が接着積層されたものである。FIG. 5 shows a core for a photographic light-sensitive material in which the buffer layer 2 is reinforced on both sides, in which the reinforcing layer 3, the buffer layer 2, the reinforcing layer 3, the core substrate layer 1 and the inner reinforcing layer 6 are bonded and laminated. It is.
【００４８】図６は緩衝層２を片面で補強し巻芯表面側
に緩衝層２がくるように構成された写真感光材料用巻芯
で補強層３を巻芯基材層１と同じものを使用し緩衝層
２、巻芯基材層１と内面補強層６が接着積層されたもの
である。FIG. 6 shows a core for a photographic light-sensitive material in which the buffer layer 2 is reinforced on one side and the buffer layer 2 is located on the surface of the core, and the reinforcing layer 3 is the same as the core base layer 1. The buffer layer 2, the core substrate layer 1, and the inner surface reinforcing layer 6 used are bonded and laminated.
【００４９】図７は緩衝層２を片面で補強し巻芯表面側
に補強層３がくるように構成された写真感光材料用巻芯
で緩衝層２、補強層３が各２層あり巻芯基材層１、内面
補強層６が接着積層されたものである。FIG. 7 shows a core for a photographic light-sensitive material in which the buffer layer 2 is reinforced on one side and the reinforcing layer 3 is provided on the surface of the core. The core has two buffer layers 2 and three reinforcing layers. The base material layer 1 and the inner surface reinforcing layer 6 are bonded and laminated.
【００５０】図８は緩衝層２を両面で補強した写真感光
材料用巻芯で補強層３がお互いに繊維の配列方向の異な
った不織布からなる緩衝層２を補強し巻芯基材層１と内
面補強層６が接着積層されたものである。FIG. 8 shows a core for a photographic light-sensitive material in which the buffer layer 2 is reinforced on both sides. The reinforcing layer 3 reinforces the buffer layer 2 made of a nonwoven fabric having different fiber arrangement directions. The inner reinforcing layer 6 is bonded and laminated.
【００５１】[0051]
【実施例】以下に、本発明品Ａ，Ｂおよび従来品Ｃ，Ｄ
について設計特性を比較評価した結果について説明す
る。EXAMPLES Examples A and B of the present invention and C and D of the prior art are described below.
The result of comparative evaluation of the design characteristics of the above will be described.
【００５２】本発明品Ａ 構成としては前記図３と同じである。巻芯基材には、写
真感光材料の巻芯材として一般的に用いられている密度
が0.65g/cm3の紙を用い、緩衝層として密度が0.1g/cm3
で木材パルプが100％からなる厚さ2.5mmの乾式不織布、
また補強層としては密度0.3g/cm3の白上質紙を用いて緩
衝層を片面補強した。The structure of the product A of the present invention is the same as that of FIG. The core material used is a paper having a density of 0.65 g / cm 3 which is generally used as a core material of a photographic light-sensitive material, and a density of 0.1 g / cm 3 as a buffer layer.
2.5mm thick dry non-woven fabric made of 100% wood pulp
The buffer layer was reinforced on one side by using white high-quality paper having a density of 0.3 g / cm 3 as the reinforcing layer.
【００５３】緩衝層と補強層は、巻芯をスパイラルに巻
き付ける前に補強層側に酢酸ビニル系接着剤を塗布し、
０．３ｋｇ／１５ｍｍ巾以下の低張力で貼りあわせ加工
を行った後２４時間保管し前述の巻芯基材と共にスパイ
ラルに巻き付け１７００ｍｍの長さで荒切りを行った。Before the winding core is spirally wound, the buffer layer and the reinforcing layer are coated with a vinyl acetate adhesive on the reinforcing layer side.
It was roughing a length of 1700mm wound spirally together with 0.3 kg / 15 mm width or less of the stored 24 hours after bonding processing at low tension aforementioned core substrate.
【００５４】荒切りした巻芯は２時間停滞させた後、パ
レットに横積みし50℃で12時間乾燥し含水率を５％〜４
％に調整した後127mm巾に切断した。The rolled core is stagnated for 2 hours, then horizontally stacked on a pallet and dried at 50 ° C. for 12 hours to reduce the water content to 5% to 4%.
% And cut to a width of 127 mm.
【００５５】写真感光材料は、厚さ0.25mm、巾127mm、
長さ175ｍのカラー写真用印画紙を用い、通常の製造条
件と同じ巻き付け張力、巻き付け速度で該巻芯に巻き付
け、ゆるみ止めとして巻端を粘着ラベルで止め通常通り
に遮光包装を行った。The photosensitive material has a thickness of 0.25 mm, a width of 127 mm,
A photographic paper for color photography having a length of 175 m was wound around the winding core at the same winding tension and winding speed as in the usual production conditions, and the winding end was fixed with an adhesive label as a loosening stopper, and light shielding packaging was performed as usual.
【００５６】本発明品Ｂ 緩衝層として密度が0.04g/cm3で木材パルプが100％から
なる厚さ１mmの乾式不織布を用いた。Inventive Product B As the buffer layer, a dry nonwoven fabric having a density of 0.04 g / cm 3 and 100% wood pulp and a thickness of 1 mm was used.
【００５７】その他の条件は本発明のＡと同一である。Other conditions are the same as A of the present invention.
【００５８】従来品Ｃ 巻芯基材には、写真感光材料の巻芯材として一般的に用
いられている0.65g／cm3の紙を用い、緩衝層として厚さ
１mmの発泡率が15倍の発泡ポリスチレンシートを用いて
スパイラルに巻き付けて1700mmの長さで荒切りした。Conventional product C As the core material of the core, 0.65 g / cm 3 of paper generally used as a core material of a photographic light-sensitive material is used. And wound into a spiral with a length of 1700 mm.
【００５９】荒切りした巻芯は２時間停滞させた後、た
だちに127mmに切断し従来の条件と同じく段ボール包装
し50℃で24時間乾燥した。The core thus cut was stagnated for 2 hours, immediately cut into 127 mm, packaged in a cardboard box and dried at 50 ° C. for 24 hours under the same conditions as in the conventional case.
【００６０】その他の条件は本発明のＡと同一である。Other conditions are the same as A of the present invention.
【００６１】従来品Ｄ 緩衝層を持たない表面に上質紙を巻き付けた巻芯で、そ
の他の条件は従来品のＣと同一である。Conventional product D This is a core obtained by winding a high-quality paper around a surface having no buffer layer. Other conditions are the same as those of the conventional product C.
【００６２】下記評価方法により評価し結果を表１に示
した。The results were evaluated by the following evaluation methods and the results are shown in Table 1.
【００６３】（評価方法）変形の程度（押され） 実施例に説明した内容で作成した各評価品を、長期保存
に相当する加速条件として50℃20％ＲＨ以下の条件で７
日間保管した後、５℃の冷蔵庫に２日保存した。(Evaluation Method) Degree of Deformation (Push) Each evaluation product prepared in the manner described in the examples was subjected to acceleration at 50 ° C. and 20% RH or less as acceleration conditions corresponding to long-term storage.
After storing for 5 days, it was stored in a refrigerator at 5 ° C. for 2 days.
【００６４】評価は、印画紙の巻芯端末部分から巻外方
向に向かって表面の光沢の差を目視確認して、変形（押
され）の発生している範囲を測定する明るみ目視検査
と、暗室で印画紙の巻芯から約20ｍをサンプリングし、
製品出荷判定に用いられる標準ネガでプリントし、変形
の程度が写真としてどの程度影響を及ぼしているかを評
価する実技判定評価の二つの方法で行った。評価は、変
形の発生が、印画紙巻芯端末からの発生範囲０〜30cm
（◎）、０〜５ｍ（○）、０〜10ｍ（△）、０〜20ｍ
（×）とし行なった。The evaluation was carried out by visually checking the difference in gloss on the surface from the core end portion of the photographic paper toward the outside of the wrapping paper, and measuring the range in which deformation (pressing) had occurred. Sampling about 20m from the core of photographic paper in a dark room,
Printing was performed using a standard negative used for product shipment judgment, and two methods of practical skill judgment evaluation were performed to evaluate how much the degree of deformation affected a photograph. In the evaluation, the occurrence of deformation is from 0 to 30 cm from the photographic paper core terminal.
(◎) 、 0-5m (○) 、 0-10m (△) 、 0-20m
(X).
【００６５】感度異常 実施例に説明した内容で作成した各評価品を、長期保存
に相当する加速条件として50℃20％ＲＨ以下の条件で７
日間保管した後、５℃の冷蔵庫に２日保存した。 Sensitivity abnormalities Each evaluation product prepared in the manner described in the embodiment was subjected to acceleration at 50 ° C. and 20% RH or less as acceleration conditions corresponding to long-term storage.
After storing for 5 days, it was stored in a refrigerator at 5 ° C. for 2 days.
【００６６】評価は、印画紙の巻芯端末部から30cm毎に
サンプリングし、光の強さを調節して強さが変化した露
光を与えることができる感光計を用いて露光し現像処理
した試験片で写真感光材料の感光的特性を求めるセンシ
トメトリーによって行った。評価は、ブランク（比較）
に対し、感度差が５％以内（◎）、５％〜10％以内
（○）、10〜15％（△）、15〜20％（×）とした。The evaluation was conducted by sampling at intervals of 30 cm from the end of the core of the photographic paper, and exposing and developing using a sensitometer capable of adjusting the light intensity to give an exposure with a changed intensity. This was performed by sensitometry for determining the photosensitive properties of the photographic material on one piece. Evaluation is blank (comparison)
In contrast, the sensitivity difference was within 5% (％), within 5% to 10% (○), 10 to 15% (△), and 15 to 20% (×).
【００６７】廃棄性 判定の基準として巻芯を構成する素材が単一材料からな
っているか、または自然環境に放置された場合、降雨、
日照、微生物等によって分解する可能性の有無を考慮し
判断した。単一材料から成り、自然に分解する事が可能
なもののみ◎とした。[0067] If the material constituting the core as a reference for discarding determination is left to do is made of a single material, or natural environment, rainfall,
Judgment was made in consideration of the possibility of decomposition by sunlight, microorganisms, and the like. Only those which consist of a single material and can be naturally decomposed are marked as と し た.
【００６８】再利用性 判定の基準として巻芯を構成する素材が単一材料からな
っているか、または異種の素材を分別することが人手に
より可能か、主に紙として再生する事が可能かどうかの
３点について考慮し判断した。単一材料であり、紙とし
て再生可能なもののみ◎とした。Whether the material constituting the core is made of a single material or whether it is possible to separate different materials manually or mainly as paper can be used as a criterion for reusability judgment. The decision was made in consideration of the following three points. Only a single material, which can be recycled as paper, was rated as ◎.
【００６９】コスト 従来品Ｃを基準（1.0）として各試作品のコストを比較
し評価した。 Cost The cost of each prototype was compared and evaluated using the conventional product C as a reference (1.0).
【００７０】ばらつき 実施例に説明した内容で作成した各巻芯を、印画紙を巻
き付ける前に各試作毎に100個ずつランダムにサンプリ
ングしノギスで切断寸法を１個につき３回測定しその寸
法の分布からばらつきを求め評価した。評価は、バラツ
キが±0.2mm以内（◎）、±0.4mm（○）、±0.6mm
（△）±0.8（×）とした。[0070] The each winding core created by the contents described in the variation example, the distribution of random sampling was cut dimensions with calipers measured every one three times its size by 100 for each trial before wrapping the paper Was obtained and evaluated. Evaluation is within ± 0.2mm (◎), ± 0.4mm (○), ± 0.6mm
(△) ± 0.8 (×).
【００７１】 比較評価結果 項 目 本発明品Ａ 本発明品Ｂ 従来品Ｃ 従来品Ｄ 変形の程度 ◎ ◎ ◎〜○ × 感度異常 ◎ ◎ ◎ ○ 廃棄性 ◎ ◎ × ◎ 再利用性 ◎ ◎ × ◎ コスト △ ○ ◎ ◎ ばらつき ◎ ◎ △〜× △〜× 上記の結果より本発明品Ａ，Ｂは従来品Ｃ，Ｄに比較し
て何れの項目でも総合的に優れている。Comparative evaluation results Item Inventive product A Inventive product B Conventional product C Conventional product D Degree of deformation ◎ ◎ ◎ to ○ × Abnormal sensitivity ◎ ◎ ◎ ○ Disposability ◎ ◎ × ◎ Reusability ◎ ◎ × ◎ Cost ○ Variation 〜 〜 × × 〜 〜 × よ り よ り 発 明 よ り よ り よ り よ り よ り よ り よ り よ り よ り よ り よ り よ り よ り よ り よ り よ り 結果 結果 よ り よ り よ り ×.
【００７２】[0072]
【発明の効果】本発明により、廃棄性、再利用性ともに
優れ、写真感光材料の巻芯部に感光材料末端の段差の影
響を与えず、かつ巻芯基材の含水率のばらつきによる切
断寸法ばらつきを減少させた写真感光材料用巻芯および
その製造方法を提供することができた。Industrial Applicability According to the present invention, both the discardability and the reusability are excellent, the core of the photographic material is not affected by the step at the end of the photographic material, and the cutting dimension is varied due to the variation in the water content of the core material. It is possible to provide a core for a photographic light-sensitive material with reduced variation and a method for producing the same.
【図１】巻芯に写真感光材料が巻付けられた状態の側面
図。FIG. 1 is a side view of a state where a photographic photosensitive material is wound around a core.
【図２】巻付けられた写真感光材料の巻芯末端部分の拡
大図。FIG. 2 is an enlarged view of a core end portion of a wound photographic light-sensitive material.
【図３】写真感光材料用巻芯の構成例を示す断面図。FIG. 3 is a cross-sectional view illustrating a configuration example of a core for a photographic photosensitive material.
【図４】写真感光材料用巻芯の構成例を示す断面図。FIG. 4 is a cross-sectional view illustrating a configuration example of a core for a photographic photosensitive material.
【図５】写真感光材料用巻芯の構成例を示す断面図。FIG. 5 is a cross-sectional view illustrating a configuration example of a core for a photographic photosensitive material.
【図６】写真感光材料用巻芯の構成例を示す断面図。FIG. 6 is a sectional view showing a configuration example of a core for a photographic photosensitive material.
【図７】写真感光材料用巻芯の構成例を示す断面図。FIG. 7 is a cross-sectional view illustrating a configuration example of a core for a photographic photosensitive material.
【図８】写真感光材料用巻芯の構成例を示す断面図。FIG. 8 is a cross-sectional view illustrating a configuration example of a core for a photographic photosensitive material.
１ 巻芯基材層 ２ 緩衝層 ３ 補強層 ４ 写真感光材料 ５ 写真感光材料巻芯端末部 ６ 巻芯内面補強層 DESCRIPTION OF SYMBOLS 1 Core base material layer 2 Buffer layer 3 Reinforcement layer 4 Photosensitive material 5 Photosensitive material core end part 6 Core inner surface reinforcement layer
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−116882（ＪＰ，Ａ) 特開 平３−217839（ＪＰ，Ａ) 実開 昭59−165861（ＪＰ，Ｕ) 実開 昭62−164343（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03C 3/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-116882 (JP, A) JP-A-3-217839 (JP, A) Japanese Utility Model Application No. 59-166581 (JP, U) Japanese Utility Model Application No. Sho 62- 164343 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) G03C 3/00
Claims (3)
からなる１層以上の緩衝層と、該緩衝層を片面もしくは
両面で補強する緩衝層と一体を成す紙製の補強層を含有
することを特徴とする写真感光材料用巻芯。1. A and a paper winding core, or One substantial wood pulp
Or a Ranaru least one layer of the buffer layer, for photographic photosensitive materials winding core, characterized in that it contains a reinforcing layer made of paper integral with buffer layer for reinforcing the buffer layer on one side or both sides.
以下で実質的に木材パルプ１００％から成り、かつ前記
補強層の抗張力強度が０．３ｋｇ／１５ｍｍ巾以上であ
ることを特徴とする請求項１記載の写真感光材料用巻
芯。 2. The method according to claim 1, wherein the buffer layer has a density of 0.1 g / cm 3.
The following consisting essentially of 100% wood pulp;
The tensile strength of the reinforcing layer is 0.3 kg / 15 mm width or more
The roll for a photographic light-sensitive material according to claim 1, wherein
core.
前記紙製の補強層と貼り合わせておくことと、スパイラ
ル加工後、荒切りされた巻芯を含水率が８％以下になる
ように乾燥処理を行い、所定の寸法に切断加工すること
を特徴とする請求項１または２記載の写真感光材料用巻
芯の製造方法。 3. The method according to claim 1, wherein the buffer layer is formed before the spiral processing step.
Bonding with the paper reinforcing layer and a spiral
After processing, the water content of the roughly cut core becomes 8% or less.
Dry and cut to predetermined dimensions
A roll for a photographic light-sensitive material according to claim 1 or 2,
Manufacturing method of core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22878192A JP3156142B2 (en) | 1991-08-27 | 1992-08-27 | Core for photographic photosensitive material and method of manufacturing the same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21542291 | 1991-08-27 | ||
| JP3-215422 | 1991-08-27 | ||
| JP22878192A JP3156142B2 (en) | 1991-08-27 | 1992-08-27 | Core for photographic photosensitive material and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05197085A JPH05197085A (en) | 1993-08-06 |
| JP3156142B2 true JP3156142B2 (en) | 2001-04-16 |
Family
ID=26520868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22878192A Expired - Fee Related JP3156142B2 (en) | 1991-08-27 | 1992-08-27 | Core for photographic photosensitive material and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3156142B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0784227A1 (en) * | 1996-01-10 | 1997-07-16 | Agfa-Gevaert N.V. | Winding core |
| US5816525A (en) * | 1996-01-10 | 1998-10-06 | Agfa-Gevaert | Winding core |
| TWI708731B (en) * | 2015-12-29 | 2020-11-01 | 美商3M新設資產公司 | Winding core for webs and rolls on same |
-
1992
- 1992-08-27 JP JP22878192A patent/JP3156142B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05197085A (en) | 1993-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |