CN203767302U - Filmstrip disacidification durable storage box - Google Patents

Abstract

The utility model provides a filmstrip disacidification durable storage box which comprises adsorbents, a box body, a bottom separating plate and lateral wall separating plates. The box bottom and the lacteal walls of the box body are all interlayers, and the interlayer of the box bottom is separated into a plurality of adsorbent separating bins through separating strips; the interlayers of the lacteal walls of the box body are also separated into a plurality of adsorbent separating bins through separating strips. A plurality of air holes are formed in the bottom separating plate and the lateral wall separating plates respectively, a layer of cover paper is pasted on the upper surface of the bottom separating plate and the outer surfaces of the lateral wall separating plates, and the cover paper is bark paper with good air permeability. The positions of the air holes correspond to the adsorbent separating bins located in the box bottom and the lateral walls of the box body respectively. The adsorbents are packaged into a plurality of small bags to be placed into the adsorbent separating bins, and the bottom separating plate and the lateral wall separating plates cover the adsorbent separating bins. The filmstrip disacidification durable storage box has the protection effect on filmstrips, and is suitable for storing the filmstrips for a long time.

Description

A kind of cinefilm durable storage case that deacidifies

Technical field

The present invention relates to image file resist technology field, specifically a kind of cinefilm durable storage case that deacidifies.

Background technology

Art of film taking photosensitive camera as main invention, have and cross over century-old culture and arts background, record and reflected the milestone such as politics, economy, culture and social style and features of each stages of historical development, there is very important reference value and historical voucher for the research history of social development, simultaneously also for film creation and artistic creation provide necessary bibliography.

Last century, the fifties was to the nineties, due to the comb. of nitric acid sheet base film, cinefilm mainly uses acetyl cellulose as plate substrate material, because this base can ensure the safety of film in production, storage, transport and use procedure, from middle nineteen nineties, it is high that polyester film base film just has intensity with it, and the advantages such as stable performance have replaced acetyl cellulose film gradually.Therefore,, in the middle of all kinds of image files of collection, acetyl cellulose sheet base cinefilm still occupies sizable proportion.But, a lot of precious acetyl cellulose sheet base cinefilms are in preservation and use procedure, its plate substrate material acetic acid syndrome that constantly hydrolysis produces is the most serious disease phenomenon of its safety of harm, the acetic acid discharging in its acidolysis process with gas form disperse among film storehouse, once reach certain concentration (self-catalysis point), just the speed that its disease occurs is accelerated in catalysis, can bring out the not film generation acetic acid syndrome of disease simultaneously.

There are the Keepwell film protection sheet of alkaline bath neutralisation treatment, the FPC of Kodak type molecular sieve deacidification agent, company of Fuji, " dry route " of film society of Vietnam (VFI) exploitation (film to be scattered for the measure that improves acetyl cellulose film local storage condition both at home and abroad at present; in the environment of exchange, rotate 4 hours at a high speed at air), deacidification acid-proof, the composite material etc. of China Film Archive's development, film archives long-term for needs, persistence adopt sealing freezing method to extend its life-span in addition.But, these deacidification agents, protective material or for example, owing to inhaling acid amount less (, it is that a litres of air of 20/1000000ths absorbs acidic gas that the film protection sheet of Japanese fuji company is put into acid content, and this film protection sheet can only use ten times); Or suction acid amount is larger, but because the modes of emplacement in film magazine can reduce its adsorption power; Or can cause damage to film by the method for VFI, and to consider that film should not depart from storage environment etc. and also limited the successful Application of this VFI method for a long time.

Thereby the speed that is mainly the preservation humiture control film degradation with aging reaction by reducing this film for the preservation of acetyl cellulose sheet base cinefilm realizes, as Chicago Art Museum of the U.S., Britain country's movie file storehouse etc. is all placed in can by silver-halide color image acetyl cellulose sheet base cinefilm or plastics box is kept at-18 DEG C, the environment of relative humidity 30%RH ± 5%RH, think optimal preservation environment.But due to storehouse, large area shop is adopted to superpower refrigerating apparatus, the operation of heavy load high-carbon, consume energy huge, in fact storehouse, most of shop is basic does not just implement, and still seriously spreads so that leave at normal temperatures the disease of the acetyl cellulose sheet base cinefilm in permeability to air poor can or plastics box in.Although and the patent No. is that ZL200920033770.0 has announced a kind of " swallow formula " letter cover of collecting ancient books at present, is also only applicable to the preservation of paper relics or archives.

Summary of the invention

In the preservation of acetyl cellulose sheet base cinefilm, adopt the operation of large area film storehouse low-temperature storage film overload high-carbon in order to overcome, the deleterious acidic gas existing in that produce in degradation with aging process or surrounding environment can not be removed better, thereby affect the deficiency that it is preserved muchly, the present invention proposes a kind of cinefilm durable storage case that deacidifies.

The present invention includes adsorbent, box body, base spacer and sidewall spacer.At the bottom of the box of described box body, be interlayer with sidewall, and be divided into multiple adsorbent separations by parting bead in interlayer at the bottom of box; In the interlayer of box side wall, be also separated out multiple adsorbent separations by parting bead.In described base spacer and sidewall spacer, be distributed with respectively multiple breather holes, and paste one deck facial tissue at the upper surface of base spacer and the outside face of sidewall spacer, described facial tissue adopts the good mulberry paper of permeability.The position of described breather hole respectively be positioned at box at the bottom of and adsorbent separation on box side wall corresponding.Described adsorbent package is become to multiple pouches, be placed in each adsorbent separation, and add a cover base spacer and sidewall spacer.

Described adsorbent adopts active carbon and magnesium hydroxide, and this active carbon and magnesium hydroxide are packaged into respectively to multiple pouches, and the weight of every bag of active carbon is 5～10g; The weight that described magnesium hydroxide is every bag is 3～8g.Active carbon and magnesium hydroxide interval are placed in each adsorbent separation.

Described box body and lid all adopt through fire-retardant, insect protected, mildew-resistant, antiseptic plank, make according to a conventional method.

For verifying technique effect of the present invention, contriver tests by experiment to the present invention: acetyl cellulose sheet base cinefilm and the film that is placed in durable storage case are placed in to aging 75 days of the simulation accelerated acid of 1L environment of same concentrations acetic acid 3g/L under normal temperature simultaneously, by picture, acidity and the mechanical strength of testing the aging front and back of each film, the durability of film are evaluated.The tensile strength that test method is carried out pattern according to GB standard method GB/T453-2002 is measured (constant speed loading method), and GB/T2679.5-1995 carries out the folding test (MIT folding strength instrument method) of sample, carries out acidity assaying by the method in " stability of cellulose ester film base photographic film ".

Tensile strength is measured: in the time that temperature is 23 ± 3 DEG C, humidity is greater than under the condition of 50%RH, with paper knife, cinefilm is cut into the test sample for the treatment of of 150 × 5mm, use pendulum tensile testing machine to measure the anti-tensile pulling force of cinefilm, 10 samples of every group of parallel determination, average, obtain the average tension stress of sample, calculate the tensile strength of sample.

The computing formula of sample tensile strength is:

S＝F/LW

In formula, S-tensile strength, kN/m; F-average tension stress, N; The width of LW-sample, mm.

Folding test: in the time that temperature is 23 ± 3 DEG C, humidity is greater than under the condition of 50%RH, paper knife is cut into cinefilm the test sample for the treatment of of 150 × 15mm.Use computer observing and controlling folding strength instrument, under the condition that is 4.9N at tension force, the folding strength of working sample, 10 samples of every group of parallel determination, record the two-fold number of times of sample, average, and obtain the folding strength of sample.

Acidity assaying: (1) weighs up the film sample of 1 gram of left and right, requires to be accurate to 0.01 gram.(2) film sample is cut into fritter (approximately 25 millimeters) together with its emulsion layer and all coatings, and puts into distilled water or the deionized water of 100 milliliters.(3) make film sample in the water of 38 degree, soak 24 hours, and ceaselessly slowly stir.(4), by solution filter, remove grain of the film.Importantly to remove emulsion grain, because gelatin is both sexes, can affect test result.(5) try its pH value with the popular PH instrumentation of Sartorius.Test data is in table 1

Simulation accelerated acid after aging 75 days in the 1L environment of same concentrations acetic acid 3g/L under normal temperature; be not placed in the sample of box and torsional deflection occurred after aging; and there is not deformation after aging in the sample that is placed in box, illustrates that this durable storage case has protective effect to film.

The different films of table 1 are placed in and are not placed in mechanical strength and the acidity of the aging front and back of box

As can be seen from Table 1; simulation accelerated acid after aging 75 days in the 1L environment of same concentrations acetic acid 3g/L under normal temperature; not being placed in the sample of the box intensity after aging all reduces than aging front variation, acidity; and intensity and the acidity of the sample that is placed in box after aging does not all have significant change, illustrates that this durable storage case has protective effect to film.

Brief description of the drawings

Fig. 1 is the structural representation of box body;

Fig. 2 is the birds-eye view of Fig. 1;

Fig. 3 is the structural representation of base spacer;

Fig. 4 is the structural representation of sidewall spacer.In figure:

1. box body; 2. adsorbent separation; 3. base spacer; 4. breather hole; 5. sidewall spacer.

Detailed description of the invention

The present embodiment is a kind of cinefilm durable storage case that deacidifies, and comprises adsorbent, box body 1, lid, base spacer 3 and sidewall spacer 5.At the bottom of the box of described box body, be interlayer with sidewall, and be divided into multiple adsorbent separations 2 by parting bead in interlayer at the bottom of box; In the interlayer of box side wall, be also separated out multiple adsorbent separations by parting bead.The volume of described adsorbent separation is advisable can place adsorbent.

The described interlayer being positioned at the bottom of box body box is made up of box plate and base spacer 3, described in the interlayer that is positioned on box side wall formed by box side wall plate and sidewall spacer 5.At the bottom of the oad of described base spacer 3 and box body box, inner ring is measure-alike.The oad of described sidewall spacer 5 is measure-alike with coordinated box body madial wall.

In described base spacer and sidewall spacer, be distributed with respectively multiple breather holes 4, and paste one deck facial tissue at the upper surface of base spacer and the outside face of sidewall spacer.The position of described breather hole respectively be positioned at box at the bottom of and adsorbent separation on box side wall corresponding.Described facial tissue adopts the good mulberry paper of permeability.

Described adsorbent adopts industrial granular active carbon and granular magnesium hydroxide.Described active carbon is packaged into many bags, and the weight of every bag is 5～10g; Described magnesium hydroxide is packaged into many bags, and the weight of every bag is 3～8g.In the present embodiment, the weight of every bag of property charcoal is 5g, and the weight of every bag of magnesium hydroxide is 3g.By the acticarbon after packaging and magnesium hydroxide adsorbent interval be held in place box at the bottom of and in adsorbent separation on box side wall, and add a cover base spacer and sidewall spacer.

Described box body and lid all adopt through fire-retardant, insect protected, mildew-resistant, antiseptic plank, make according to a conventional method.Fire-retardant, insect protected, mildew-resistant, anti-corrosion treatment process and the conditioning fluid of described box body and lid is all that in ZL200910219141.1, disclosed fire-retardant, insect protected, mildew-resistant, anti-corrosion treatment process and conditioning fluid are identical with the patent No..

When use, the adsorbent after packaging is placed on respectively and is respectively stated in adsorbent separation, and add a cover base spacer and sidewall spacer.Cinefilm is placed on above-mentioned base spacer, covers lid, cinefilm is deposited.

Claims (5)

1. the cinefilm durable storage case that deacidifies, is characterized in that, comprises adsorbent, box body, base spacer and sidewall spacer; At the bottom of the box of described box body, be interlayer with sidewall, and be divided into multiple adsorbent separations by parting bead in interlayer at the bottom of box; In the interlayer of box side wall, be also separated out multiple adsorbent separations by parting bead; In described base spacer and sidewall spacer, be distributed with respectively multiple breather holes, and paste one deck facial tissue at the upper surface of base spacer and the outside face of sidewall spacer; The position of described breather hole respectively be positioned at box at the bottom of and adsorbent separation on box side wall corresponding; Described adsorbent package is become to multiple pouches, be placed in each adsorbent separation, and add a cover base spacer and sidewall spacer.

2. the cinefilm durable storage case that deacidifies as claimed in claim 1, is characterized in that, described facial tissue adopts the good mulberry paper of permeability.

3. the cinefilm durable storage case that deacidifies as claimed in claim 1, is characterized in that, described adsorbent adopts active carbon and magnesium hydroxide, and this active carbon and magnesium hydroxide are packaged into respectively to multiple pouches, and the weight of every bag of active carbon is 5～10g; The weight that described magnesium hydroxide is every bag is 3～8g.

4. the cinefilm durable storage case that deacidifies as claimed in claim 1, is characterized in that, active carbon and magnesium hydroxide interval are placed in each adsorbent separation.

5. the cinefilm durable storage case that deacidifies as claimed in claim 1, is characterized in that, described box body and lid all adopt through fire-retardant, insect protected, mildew-resistant, antiseptic plank, make according to a conventional method.