JP2001158455A - Light resistant packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container for packaging a photo-sensitive film product in which a tape used for rigidly closing a product container and a lid to assure a light-shielding characteristic during transportation and handling of the photo- sensitive film product is not needed, resulting in that its expenditure is reduced and its waste disposal is not needed. SOLUTION: A container for use in packaging a photo-sensitive film of the present invention has a feature that its either locking or unlocking is performed by an anti-rotating feature. A container compartment is closed under its light resistant state to prevent a product from being exposed to light. The lid and the container compartment have at least one thread fitted to the other thread from each other so as to cause the packaging container to be rigidly fastened. A raised part of the container compartment is fitted to a notch formed at a lid to prevent the lid from being moved around its axis. The raised part and the notch are fitted to each other to cause the packaging container to become light resistant state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates generally to the field of packaging, and more particularly to the packaging of long rolls of photosensitive web material. The invention further relates to a light-tight packaging container that includes features that are tightly closed during transport and storage, ensuring light fastness.

[0002]

2. Description of the Related Art Long rolls of photosensitive web material, such as photographic film used in review photography, social / personal photography and commercial photography, generally ensure lightfastness from the manufacturer to the film processor. Packaged in a container. A roll of photosensitive film is wound around a core with or without a flange. Generally, a light-tight container has a film compartment and a lid that fits around the film compartment. Containers are often formed from metal or plastic.

[0003] It is well known that the lid of the film container must be securely connected to the film compartment in order to ensure that it is light-tight during transport and handling. Tightly closing the film compartment is now ensured by wrapping the periphery with an opaque or partially opaque adhesive material such as tape and covering the seam between the lid and the film compartment. Generally, the manufacturer of the photosensitive film product glues the seam between the film compartment and the lid in a dark environment to ensure the lightfastness of the product during transport and handling from the factory to the photographer. Attach material or tape. When using the product, the photographer removes the tape from the seam and disposes it for a series of environmentally friendly disposals. The photographer keeps the packaging container light-tight until it is placed in a dark bag or dark room. When in a dark environment, the photographer opens the packaging container, removes the film and places it in the camera. After exposing the photograph, the photographer uses a dark background or darkroom to remove the film from the camera and place the exposed film in a lightfast packaging container. The photographer then renders the film compartment of the packaging container provided with the lid light tight and wraps tape at the seam to ensure light fastness during transport and handling from the photographer to the developer chamber. At the film processor or developing room, remove the tape that secures the seam between the lid and the film compartment and remove the film.

[0004]

Current packaging containers for packaging photosensitive film products have a number of disadvantages. For example, adhesive materials or tapes require additional labor costs in the film manufacturing process (due to the need for additional labor). Workers can be injured when cutting tape in a dark environment suitable for handling photosensitive film. The use of tape imposes an additional undesirable expense on film manufacturers that tape the container to protect the photosensitive product. Furthermore,
The burden of disposal processing is imposed on the photographer who peels off the tape and eventually discards the tape. Furthermore, the photographer who re-tapes the film container before transporting it to the developing room is costly. Finally, the developing chamber in which the tape is peeled off, the exposed film is taken out, and the tape is discarded also places a burden on disposal processing.

[0005] On October 6, 1998, Roig's "Pa
U.S. Pat. No. 5,816,422, entitled "ckage With Safety Lid and Seal," describes a container with a threaded and lockable lid, primarily for safety and health considerations. The container described in the above patent is
The lid has protrusions 5, 6 that are aligned with the recesses 9, 10 in the body. The integrity of the locking mechanism in the above patents does not meet the lightfastness requirements as the present invention does.

[0006] Accordingly, there is a need for a packaging container for packaging photosensitive film products that is simple to use and more cost effective, instead of a tape that protects the film products from light.

Accordingly, an object of the present invention is to provide a light-resistant packaging container for packaging a photosensitive film product which is easy to take out in a dark environment.

[0008] It is a further object of the present invention to provide a lightfast packaging container that can be easily opened in dark environments without the need for additional materials.

The present invention further solves the problem of increasing waste in a series of environmentally friendly waste treatments.
An object of the present invention is to provide a light-resistant packaging container for packaging a photosensitive film.

[0010]

SUMMARY OF THE INVENTION A feature of the present invention is that a first detent feature formed on a flange of a film compartment mates with a second detent feature formed on a lid to provide a film compartment. It is to ensure that no light enters.

In order to solve the above and other objects, the features and advantages of the present invention are provided as one aspect of the present invention by a light-tight packaging container as described below. The light-tight packaging container of the present invention has a base, a side wall surrounding the base, and a central opening facing the base, and includes a generally cylindrical container compartment, wherein the side wall has at least one spirally provided A first thread and a flange spaced from the thread and extending at least partially around the sidewall, the flange having a first detent feature extending axially from the flange. .

The lightfast packaging container of the present invention further includes a generally cylindrical lid formed over at least a portion of the side wall, the lid cooperating with the first thread of the container compartment. And at least one second thread helically extending from the inner wall and engaging the first detent feature on the periphery of the flange for mating with the first detent feature of the flange. It has two detent features, preventing the lid from moving about the axis along the flange.

The present invention has a number of advantageous effects in current developments. First and foremost, the present invention does not require adhesive tape to secure the seam between the lid and the product compartment to ensure lightfastness within the product compartment. Second, the present invention eliminates the costs and waste associated with adhesive tape. The present invention is also simpler to produce and less expensive. Furthermore, the packaging container according to the invention is simple to use.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent with reference to the following description and drawings. The same reference numerals are given to the same features common to the drawings.

With particular reference to FIGS. 1-4, a packaging container 10 and / or components thereof suitable for storing and transporting a product, such as a roll of photosensitive film, in a light-tight condition are shown. FIGS. 1 and 4 show the container 10 closed and provided with a container compartment 12 and a lid 22 (described below) that is tightly fitted to the container compartment 12 (described below). Referring to FIG. 2, the packaging container 10 has a container compartment 12 that is generally cylindrical. As shown in FIG. 2, the container compartment 12 has a substantially circular base 14, a side wall 16 surrounding the base, and an opening 17 facing the base 14 to allow removal from the container compartment 12.
Having. In an embodiment of the present invention, side wall 16 has a flange 18 that extends at least partially around the outer periphery of container compartment 12. It is important that the flange 18 have a first detent feature extending axially from the flange 18, preferably a ridge 20.

FIG. 3 shows the container compartment 1 described above.
2 shows a generally cylindrical lid 22 closing the second opening 17 (see FIG. 2). The lid 22 is connected to the container compartment 12
Has at least one second detent feature 24 formed to mate with a first detent feature 20 on the flange 18 of the first, preferably two spaced notches. The second detent feature 24 is at least one notch formed in the perimeter 26 that captures the ridge 20 provided on the flange 18 and prevents the lid 22 from moving along the flange 18. Is preferred.

FIGS. 5 and 6 show the packaging container 10 of the present invention.
2 shows a further embodiment of FIG. In FIG. 5, the base 1
4 surrounds the flange 18 and the side wall 1.
It has a first thread 36 extending at least partially helically around 6. As in the previously described embodiment, the flange 18 has a first detent feature 38 that extends in the axial direction.

FIG. 6 shows a generally cylindrical lid 40 for closing the opening 17. The lid 40 has a second thread 42 extending helically around the inner wall 43 and cooperates with an outer first thread 36 provided in the container compartment 12. Edge 44 of outer periphery of lid 40
A first detent feature 38 provided on the flange 18.
Has a second detent feature 46 which mates with the lid to prevent the lid 40 from moving about the axis along the flange 18.

In this embodiment, the first thread 36 is screwed into the second thread 42 so that the first detent feature 38 is
The lid 40 allows the container compartment 12 to be tightly closed by being fitted side by side with the detent feature 46. This prevents light from penetrating into the container compartment 12 and prevents unintentional loosening after the lid 40 has been coupled to the container compartment 12 due to pressure around the axis. Lid 4
0 may have a plurality of ribs 52 on the outer periphery to easily engage or disengage the second thread with the first thread.

As indicated above, the first detent feature 38 is preferably a generally arcuate ridge. Those skilled in the art will appreciate that the ridges and notches have virtually any shape, such as substantially square, substantially V-shaped, or substantially C-shaped. In FIG. 5, a generally arcuate ridge 3 is shown.
Either end of 8 is a first land 54, and the other side is a second land 56. The raised portion 38 is connected to the first
Is guided by the second land 56 and the second land 56 and moves with respect to the second detent feature or notch 46 (see FIG. 6), and enters a light-proof state or a state where light enters.

In a further embodiment of the present invention, a method of forming a light-resistant packaging container 10 for packaging a photosensitive film product comprises the steps of packaging container 10 and container compartment 1
Providing a removable lid 22 shaped to mate around 2 as described above. The first detent feature 20 is, for example, molded and provided in the container compartment 12 and is configured to be mated with the first detent feature 20 to be light-tight. The feature 24 is provided inside the lid 22. Detent features 20 and 24
Is formed, the removable lid 22 is fitted to the container compartment 12 and the first detent feature 20 mates with the second detent feature 24 in a light-tight manner.

FIG. 7 shows a further embodiment of the packaging container 1 (see FIG. 1) of the present invention. The packaging container of this embodiment has at least one first thread and at least one detent feature 66 on the interior wall 64 as described above. Correspondingly, container compartment 6
8 comprises at least one second thread 70 wound at least partially helically around the side wall 69 and cooperates with at least one first thread provided in said lid 60 . The container compartment 68 further has a second detent feature 72 as described above, which mates with the first detent feature provided on the lid 60 when the packaging container 10 is closed. . The first screw thread 6
2 and the second thread 70 allow the user to
Can be securely fastened to the container compartment 12. The first detent feature 66 and the second detent feature 72 prevent the lid 60 from moving about an axis and prevent light from entering the container compartment 68 during handling and shipping.

The container compartment 12 and the lid 22
Is preferably formed from a rigid thermoplastic material such as high density polyethylene. However, it will be apparent to one skilled in the art that other synthetic materials such as polystyrene or polypropylene may be used.

The packaging container lid and the generally cylindrical container compartment are formed from a high density polyethylene material.

[Brief description of the drawings]

FIG. 1 is an isometric view showing the packaging container of the present invention closed.

FIG. 2 is an isometric view showing a container compartment provided with a detent feature.

FIG. 3 is an isometric view showing a lid provided with a detent feature.

FIG. 4 is an enlarged view showing a state in which the detent features of the container compartment and the lid are fitted.

FIG. 5 is an isometric view showing another container compartment provided with detent features and threads.

FIG. 6 is an isometric view showing another lid provided with a detent feature and threads.

FIG. 7 is an isometric view showing another packaging container provided with thread and detent features.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Packaging container 12, 68 Container compartment 14 Base 16, 30, 69 Side wall 18 Flange 20, 38, 72 Detent feature (ridge) 22, 40, 60 Lid 24, 46, 66 Detent feature (notch) 26, 44 Peripheral edge 36, 42, 62, 70 Thread 43 Inner wall 44 Outer peripheral edge 52 Rib 54, 56 Land 64 Inner wall

Claims (3)

[Claims] An overall cylindrical container compartment having a base, a side wall surrounding the base, and a center opening facing the base, and a whole formed to cover at least a part of the side wall. A light-tight packaging container comprising: a lid which is substantially cylindrical; and wherein the side wall has a first spirally provided first shape.
And a flange spaced from the at least one first thread and extending at least partially around the side wall, wherein the first flange extends axially. A lid having at least one second thread helically extending from an inner wall cooperating with the at least one first thread of the container compartment; The lid has a second detent feature formed on an outer peripheral edge and mating with the first detent feature of the flange, and the lid moves about the axis along the flange. That will prevent light-tight packaging containers. 2. The light-tight packaging container according to claim 1, wherein the first detent feature is a generally arcuate ridge and the second detent feature is a notch. 3. The notch has an overall arched shape, and a first land for guiding the raised portion to a position where the notch is fitted to the notch and a free position where the raised portion is not fitted to the notch. 3. The light-tight packaging container according to claim 2, wherein the second land has an opposite side.