DE1622282A1 - Wrapping for light-sensitive sheet films - Google Patents

Description

* PATENTANWÄLTE -—....-.

DR. E. WIEGAND DIPUNG * W. NIEMANN OR. M. KOHLER DIPL-ING. C GERNHARDT

MÖNCHEN - - HAMBURG Λ ß OQOQ

phone: 555 476 8000 MONCHEN I5 _r February 9, 1968

TELEGRAMMEiKARPATENT NUSSBAUMSTRASSE10

f.15 558/68

Fuji Shashin Film Kabushikl Kaisha Kanagawa (Japan)

Wrapping for light-sensitive flat films · /. ",

The invention relates to an enclosure for Wrapping or wrapping of photosensitive sheet films or film sheets.

According to the prior art, light-sensitive flat films , for example X-ray films, which are hereinafter referred to as "flat films ¹¹ , are wrapped once with a protective paper 2 'to prevent scratches or static marks on the sheet or flat films X and, collected and with a , wrapped in thick paper 5 ¹ ^ l for protective purposes, as shown in Fig. 1. Then the sheet or plan-

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films placed in a leak-proof bag 4, the also with an outer box 5 for the shielding of Light and enveloped for sclrafcz purposes,

The object of the invention is to create a casing for light-sensitive sheet or sheet films that are light, simple and is cheap, the protective paper 2 and the moisture-proof Bag 4 of the previous technology eliminated and.

The invention is explained in more detail below with reference to the drawing explained.

Fig. 1 shows a conventional one in perspective Wrapping for photosensitive sheet films, with parts are removed.

Pig. Fig. 2 shows in perspective an embodiment of the envelope according to the invention, in which some photosensitive sheets or flat films are wrapped, wherein Parts are removed.

Fig. 5 shows a plan view of a preliminary wrapping member; this in; another embodiment according to the invention, is used, and

Fig. 4 shows in a perspective illustration with removed parts the ■ light-sensitive flat films, which are wrapped with a second embodiment of the envelope according to the invention are.

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Fig. 2 shows an embodiment of the envelope; according to of the invention, with collected sheets of films 6 with a cloudy or opaque film 7 or a cloudy or a ^ r; opaque film 7 are tightly wrapped. The? iindureworthy Foil 7 for tightly wrapping the sheet films is made of one Heat-shrinking plastic film produced * which contains carbon or a photochromic compound to shield light. Pie flat films 6 loosely attached to the heat-shrinking opaque film 7, which is heat-sealed at its edge parts, is covered by a Hot blast shaft led to a shrinkage of the heat-shrinkable To bring about film 7 to achieve a tight envelope. As heat shrinkable film or heat shrinkable Foil 7 are films or foils made of vinyl chloride, polyethylene, polypropylene or the like. used. The heat sump capable Film 7 is naturally moisture-proof.

Since the casing according to the first embodiment of the

finding as described above a light shielding and moisture-resistant behavior ^ as stated above, and ^^ the films are tightly wrapped with this Ois wrapping, friction between the films is significantly reduced and there is therefore no risk of scratches forming on it »

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Thus, the H. gel smear, the protective paper and the moisture-proof wrapping are eliminated, and the weight of the whole Serving decreases wfcd, causing their degradation Cost is also effected. If the films are to be handled and carried without special precautions, and A strong protection of the film is required, the films are preferably first: with a shock or impact absorbing material wrapped and then with the heat-shrinkable outer Wrapping wrapped around, '

Tests have shown that by wrapping the sheet films with the shock absorbing material and with the heat-shrinkable film of a thickness of 20 Ms 50 / U, which contains 5 to 20 % carbon, a wrapping or wrapping with almost the same light-shielding moisture-proof impact or shock, a more secure effect like that of the conventional thick cover was obtained.

In Fig. 3 is another embodiment of the envelope shown according to the invention, wherein a pre-wrapping 8 Made of paper or plastic ο .. the like. Is shown which has a bottom part 40 of substantially the same shape and size as at the Blattfilmen.1, a cover part 41 with essentially the same shape and size as the bottom part 40, side wall parts 43 attached to one of the parts. 4Ö or 4.1 are appropriate, ., A back wall part 42, the bottom part 40 and the lid part

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connects, and a front wall part 44, which is connected to the adjoining cover part 41, - .. comprises- _fl The provisional wrapping member 8 or the Yorumhüllung 8, which covers the * collected sheet or sheet films 1, has the effect of a light shield and impact or shock absorption. The wrapping according to the invention comprises this provisional wrapping member 8 and a heat-shrinkable wrapping film 9, which does not have to have a light-shielding behavior, for tightly wrapping or wrapping the sheet or flat films 1, which were previously with the provisional or preceding wrapping member 8 are wrapped. .

As shown in Figure 4, the sheet or plan films 1 wrapped with the wrapping according to the invention are tightly wrapped with the heat-shrinkable wrapping film 9 on the preliminary wrapping member 8 and therefore there is no risk of scratches or static Mark egg! on the films due to the friction between the Plänfilmen 1, etc. are turned off whereby the common intermediate protective papers. Since the heat-shrinkable wrapping film has a moisture-resistant behavior, the usual moisture-resistant bag is also switched off *,.

The foregoing preliminary barren Umhüliungsglied; 8 needs no light-shielding properties zubesitzeii, provided that the shrinkable wrapping film 9 'having lichtabsehitfflendes behavior _0' ~

109 847713 72
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The side wall part 43 of the present Uailillmgsglieäes according to the invention can be omitted as stated tmrde that the side wall part 43 with regard to the insulation » and impact or shock absorbing effect is not always necessary, what was observed on the basis of an experiment

The heat-shrinkable casing sfi Im 9 can be made from a heat shrinkable film, e.g. polyvinyl chloride, Polyethylene * polypropylene, polyvinylidene chloride or the like.

Turn as described above; When wrapping ge ~ The second embodiment of the invention measured the useful Between the protective paper and the moisture-proof container, when wrapping photosensitive sheets - or Flat films were necessary, omitted} and the Uiahülliingsvorgang is considerably simplified, and the wrapped sheets or flat films! can in effort? White to be handled

Since Wa & ieaikM the ZwiscnensiihutzpiBBijö ^ is omitted, the quality of the film is maintained to a large extent because 2w |, rule paper contains some organic compounds "may chemically be'öinflussen the film"

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Claims (1)

^J - claims 1· . Wrapping for light-sensitive sheet films for tight wrapping of the light-sensitive sheet or sheet films without Schutapaper between the sheet films "characterized in that it comprises a hit-shrinkable 3-film envelope (7)" which contains carbon or a photochromic "compound for shielding from light" - M. 2. Covering according to claim 1, characterized in that that they are a. previous wrapping member (δ) for directly wrapping the accumulated sheet or sheet films (1) to the ^ Zwedk the shock or impact absorption and a heat-shrinkable Pilm wrapping member (9)> containing carbon or a photochromic compound for light shielding. 3. Cover according to claim 1 or 2, characterized in that it has an opaque preceding cover member (8) for the immediate wrapping of the accumulated ^ th sheet films (1) for shock and impact absorption and light shield and a heat-shrinkable film member (9) for sealingly wrapping with the previous wrapping member wrapped sheet film " 4. Covering according to one of claims 1 to 3, characterized in that the preliminary covering member (8) has a Bottom part (4o), a back part (42), a cover part. (41) and a front part (44), each connected to one another, for wrapping the collected sheet films. 10 9847/1372 BATH ORIGINAL ~