Slide-type wrap film case

Abstract

To create a new wrap film case which can cover even a large-sized container with a wrap at one time.SOLUTION: A wrap case includes: a case body (10) comprising an outer case (20) and an inner case (30); and a safety cutter (80). The outer case can store a first roll (40), and the inner case can store a second roll (50). The inner case can be stored with respect to the outer case in a nesting style and can be extended from the outer case. On a side outer surface of the inner case, a lever (60) is provided which facilitates the movement of the inner case. The outer case includes a first exit (22) for drawing out a film from the first roll, and the inner case includes a second exit (32) for drawing out a film from the second roll. The safety cutter is mounted so as to slide in the longitudinal direction on the case body, and can cut the films drawn out from the first roll and the second roll.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a slide-type wrap film case. [Background technology]

[0002] As an example of prior art for a wrap film case, Patent Document 1 describes an invention in which wrap film can be cut by pulling out the wrap film and placing it on an upper plate, and then sliding a cutter from one end of the rail to the other while the rail is in contact with the upper plate. Patent Document 2 describes an invention aimed at providing a resin sheet container that allows sheets to be easily cut, which has a metal blade and allows sheets to be cut by sliding a slider along the rail. Patent Document 3 further describes an invention that allows sheet material to be easily cut to any length and can safely cut sheet material in a straight line without injuring hands with a sharp blade. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-033980 [Patent Document 2] Japanese Patent Publication No. 2022-185532 [Patent Document 3] Japanese Patent Publication No. 2023-045572 Summary of the Invention [Problem to be solved by the invention]

[0004] When preserving food, the process of covering a plate or other container containing food with plastic wrap is common. However, when trying to wrap a container that is larger than the width of the wrap, it is necessary to first wrap the container, then wrap it again to cover the gap between the wrap and the container, which is time-consuming. Therefore, we set out to invent a new wrap film case that would allow us to wrap even larger containers in one go. [Means for solving the problem]

[0005] The product of the present invention has nested inner and outer cases, each of which rotatably houses a film roll. The wrap case has a film end holding rod that can be contracted depending on the overall length of the inner and outer cases, and a safety cutter that is attached so that it can move across the film width. To use the wrap case, first extend the inner case and then move the lever to adjust the overall length of the case depending on the size of the container to be wrapped. Next, the film ends pulled from each film roll are pulled forward from the case by the required length to wrap the container. Finally, the cutter is moved to cut the two layers of wrap. In this way, wrap can be applied in a single operation depending on the size of the container, allowing for efficient and reliable wrapping.

[0006] More specifically, the wrap film case of the present invention (also simply referred to as a "wrap case") has the following structure.

[0007] That is, the present invention provides a wrap case comprising a case body consisting of an outer case and an inner case, and a safety cutter, wherein the outer case can accommodate a first roll and the inner case can accommodate a second roll, the inner case can be nested within the outer case and can be pulled out from the outer case, a lever is provided on the outer side surface of the inner case to facilitate movement of the inner case, the outer case has a first outlet for pulling out film from the first roll, and the inner case has a second outlet for pulling out film from the second roll, and the safety cutter is attached so as to be slidable longitudinally on the case body and is capable of cutting the film pulled out from the first and second rolls.

[0008] It is preferable that the wrap case of the present invention further comprises a film end holding rod that can wrap the ends of the film pulled out from the first and second rolls and that can adjust the length of the film with the wrapped ends pulled out from the case body.

[0009] In the wrap case of the present invention, it is preferable that the outer case has a first roll fixing bar for rotatably supporting the first roll, and the inner case has a second roll fixing bar for rotatably supporting the second roll.

[0010] In the wrap case of the present invention, it is preferable that the inner side surface of the inner case has a magnet for detachably securing the first roll fixing rod, and the inner side surface of the outer case has a magnet for detachably securing the second roll fixing rod.

[0011] In the wrap case of the present invention, it is preferable that the outer case further has a film trajectory adjustment rod to prevent the film pulled out from the first roll from coming into contact with the second roll or the film pulled out from the second roll inside the case body.

[0012] In the wrap case of the present invention, the film trajectory adjusting rod preferably has a rotating portion that can rotate in synchronization with the withdrawal of the film from the first roll.

[0013] In the wrap case of the present invention, it is preferable that a part of the inner surface of the outer case and a part of the outer surface of the inner case are provided with abutting portions to prevent the inner case from coming off the outer case.

[0014] In the wrap case of the present invention, it is preferable that the first outlet and the second outlet are each provided with a stopper that prevents the pulled-out film from rewinding.

[0015] In the wrap case of the present invention, it is preferable that the safety cutter has a main body with a pair of left and right notches and a pair of blades that are exposed only at each notch, and is capable of cutting the film pulled out from the first and second rolls when slid in either the left or right direction.

[0016] In the cling film case of the present invention, it is preferable that a non-slip surface for fixing the case body is provided on the outer surface of the bottom of the outer case. [Effects of the Invention]

[0017] By being provided with the above-described configuration, the present invention can achieve the following effects.

[0018] The case can be extended, and the second wrap film core housed in the case can be slid in tandem to extend the width of the wrap, allowing large containers to be wrapped in one operation.

[0019] The rolls are refillable, so you can continue to use the case, making it environmentally friendly.

[0020] The film edge holding rod prevents wraps from sticking together in unintended places outside the case, making wrapping more convenient.

[0021] The film trajectory adjustment rod prevents wraps from sticking together in unintended places inside the case, making it easier to apply the wrap.

[0022] By attaching safety cutter blades to both sides, you can cut the wrap from either the left or right side, making it convenient to use regardless of your dominant hand.

[0023] By providing a notch in the safety cutter, unlike conventional wrap film cases, the wrap film can be cut safely without the risk of injury.

[0024] By using a non-slip surface such as a suction cup on the bottom of the outer case to fix the case body, the wrapping process can be done more comfortably.

[0025] It can be used for a variety of things, not just plastic wrap, such as aluminum foil. [Brief explanation of the drawings] )

[0026] [Figure 1] 1 is a schematic perspective view showing an embodiment of the wrap case of the present invention in which the inner case is completely housed within the outer case. FIG. [Figure 2] 2 is a schematic perspective view showing a state in which half of the inner case is protruding outward in the embodiment of FIG. 1. FIG. [Figure 3] 2 is a schematic perspective view showing the state in which the inner case has been slid from the outer case to the maximum width in the embodiment of FIG. 1. FIG. [Figure 4] 2 is an explanatory diagram showing the structure of a film end holding bar in the embodiment of FIG. 1. FIG. [Figure 5] 2 is a schematic cross-sectional view showing the cross-sectional structure of the embodiment of FIG. 1 in a state where the inner case is housed in the outer case. [Figure 6] 2 is a schematic cross-sectional view showing the cross-sectional structure of an inner case in the embodiment of FIG. 1. [Figure 7]2 is a schematic cross-sectional view showing the cross-sectional structure of the inner case including a portion that abuts against a part of the inner surface of the outer case in the embodiment of FIG. 1. FIG. [Figure 8] 2 is a schematic cross-sectional view showing the cross-sectional structure of the outer case including a portion that abuts against a part of the outer surface of the inner case in the embodiment of FIG. 1. FIG. [Figure 9] 2 is an explanatory view showing the structure of the inner side surface of the outer case in the embodiment of FIG. 1. [Figure 10] 2 is an explanatory view showing the structure of the inner side surface of the inner case in the embodiment of FIG. 1. FIG. [Figure 11] 2 is an explanatory diagram showing the structure of a first roll fixing rod and a second roll fixing rod in the embodiment of FIG. 1. FIG. [Figure 12] 2 is an explanatory diagram showing the structure of a film trajectory adjustment rod in the embodiment of FIG. 1. FIG. [Figure 13] 2 is an explanatory view showing the structure of a slide assist rod in the embodiment of FIG. 1. FIG. [Figure 14] 6 is a schematic cross-sectional view showing the relationship between the first film pulled out from the first roll, the film trajectory adjusting rod, and the second film pulled out from the second roll in the cross-sectional structure of FIG. 5. FIG. [Figure 15] FIG. 2 is a schematic perspective view showing the structure of a safety cutter in the embodiment of FIG. 1. [Figure 16] 2 is a schematic cross-sectional view showing the structure of a roller of a safety cutter and a rail for moving the cutter in the embodiment of FIG. 1. FIG. [Figure 17] FIG. 4 is a schematic perspective view showing the movement of the safety cutter in the state of FIG. 3. [Figure 18] 1. FIG. 4 is an explanatory diagram showing a suction cup as an example of an anti-slip device for fixing the case body in the embodiment of FIG. [Figure 19] 1, the first film is pulled out from the first outlet, the second film is pulled out from the second outlet, and the ends of the films are wound around the film end holding bars. FIG. [Figure 20] 2 is an explanatory view showing how a large container (dish) is covered with a first film and a second film using the wrap case of the embodiment of FIG. 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0027] The slide-type wrap film case of the present invention will be outlined below with reference to the embodiment shown in FIGS. 1 to 3 and 5. FIG.

[0028] As shown in Figure 3, the rectangular parallelepiped wrap case body has an outer case and a slightly smaller inner case in a nested structure. The nested structure consists of a guide (concave) formed on the outer surface of the inner case and a rail (convex) formed on the inner surface of the outer case that fits into the guide, as shown in the uneven portion of the cross-sectional view in Figure 5. These fit together to enable sliding movement along the length of the wrap case, as shown in Figures 2 and 3. Another possible device for enabling sliding movement is the use of a knob-like device that allows the amount of sliding movement to be adjusted by the amount and direction of rotation of the knob. Normally, the inner case is completely contained within the outer case, as shown in Figure 1.

[0029] As shown in Figure 5, a first roll (wrap wound around a core) and a second roll (wrap wound around a core) are housed inside the inner case, one above the other. The first roll is rotatably supported by the outer case, and the second roll is rotatably supported by the inner case. Therefore, when the inner case is pulled out from the outer case, as shown in Figure 3, the second roll is also pulled out, moving away from the other roll in the length direction. The outer case and the inner case are respectively formed with a first exit and a second exit through which the film from the first roll and the second roll is pulled out. In addition, as shown in Figure 2, a pair of arms are attached to both sides of the front of the wrap case to support both ends of the film end holding rod. In addition, a cutter movement rail is formed on the upper front side of the wrap case to move the safety cutter between the outer case and the inner case.

[0030] While details of each component will be described later, we will briefly explain how to use the wrap case when covering a container larger than the film width of the first roll. First, as shown in Figures 1 to 3, slide the inner case from the outer case to its maximum width and remove the second film (see Figure 19) coming out of the second outlet from the non-slip sheet. At this time, the second roll attached to the inner case is also pulled out of the outer case, as described above. Next, use the lever to slide the inner case to fit the size of the container to be wrapped, adjusting the overall length of the wrap case. At this time, pull the inner case out of the outer case so that its width is slightly wider than the size of the container to be wrapped. Then, pull the first film from the first roll out of the upper first outlet, and pull the second film from the second roll out of the lower second outlet, slightly wrapping the ends of each film around the film end retaining rods (see Figure 19). Next, remove the film end retaining rods from the pair of arms and pull them forward to cover the container (see Figure 20). Finally, move the safety cutter along the cutter movement rail to simultaneously cut both films. In this way, when wrapping a container that is larger than the film width of the first roll, it is possible to adjust the pull-out of the inner case and pull out two pieces of film simultaneously using the film end holding rods.

[0031] When covering a container that is smaller than the film width of the first roll with the film, it is sufficient to pull out only the first film from the first roll without pulling out the inner case from the outer case.

[0032] The wrap case body, film end holding rod, safety cutter, etc. will be described in detail below.

[0033] <Wrap case body> As described above, the wrap case body is composed of an inner case and an outer case nested within each other. As shown in Figure 9, a first roll fixing rod is attached lengthwise to the outer case, and the first roll is rotatably attached to the roll fixing portion (see Figure 11) of the first roll fixing rod. When the film on the first roll is pulled, the first roll rotates and the film is pulled out. As shown in Figure 10, a second roll fixing rod is also attached lengthwise to the inner case, and like the first roll, the second roll is rotatably attached to the roll fixing portion of the second roll fixing rod. When the film is pulled from the second roll, the second roll also rotates. Furthermore, the magnets at the end of the roll fixing rod are removably attached to the inner wall of the case, allowing for roll replacement. To replace the roll, slide the inner case to its maximum width, open the lids of the inner and outer cases, and remove the roll fixing rod, which is attached to the wall of the case with a magnet. In addition, as a means for detachably fastening the roll fixing rod to the inner wall, it is conceivable to use a structure such as a hook-and-loop fastener or a screw and a screw socket, in addition to a magnet. In addition, the case is equipped with a handle large enough for one finger to make it easier to open the lid.

[0034] As mentioned above, this wrap case can be extended by pulling the lever on the inner case, as shown in Figures 1 to 3. This feature allows you to use wrap up to approximately twice the width of a single wrap. You can also set the wrap to your preferred width.

[0035] As shown in Figures 5 and 6, the inside of the case has projections and recesses that allow the inner case to slide relative to the outer case. In Figure 7, the inner diagonal lines indicate the basic structure of the inner case, and the outer diagonal lines indicate the protrusions on the case. In Figure 8, the outer diagonal lines indicate the basic structure of the outer case, and the inner diagonal lines indicate the protrusions on the case. Since the case must not be stretched too far and cause the inner and outer cases to separate (detach), after the case is stretched to its maximum, the protrusions on the red diagonal lines in Figures 7 and 8 collide (butt together), and the sliding stops when the case is stretched to its maximum.

[0036] The inner and outer cases are provided with a first and second outlet (see Figure 3), allowing film to be pulled out from each. Also, as shown in Figure 5, the first and second outlets are equipped with rubber stoppers to prevent the wrap from falling into the case. The rubber stoppers also hold the film in place to a certain extent when cutting, allowing for efficient cutting. Also, to prevent the second film from sticking to the second outlet of the outer case during sliding and interfering with the sliding process, the area of ​​the second outlet (i.e., the height of the opening of the second outlet) is designed to be slightly larger on the outer case than on the inner case shown in Figure 3.

[0037] In addition, by using an anti-slip sheet that allows the wrap to stick to it under the first and second exits on the outside of the case, the wrap is prevented from getting stuck inside the case when not in use.

[0038] Next, we will explain the parts inside the case. The film trajectory adjustment rod shown in Figure 12 adjusts the trajectory of the first roll as shown in Figure 14 to prevent the first roll of film (first film) from sagging inside the case and coming into contact with the second roll or second film, which could cause the films to stick together inside the case. It also has a rotating part so that the film trajectory adjustment rod rotates in sync when the film is pulled out. The slide assist rod shown in Figure 13 is a rod attached to keep the case stable when it is slid or extended. These are attached to the joints shown in Figure 5. Suction cups, as shown in Figure 18, are attached to the back of the wrap case body to prevent slipping and secure the case body in place. Anti-slip materials other than suction cups can also be used, such as adhesive sheets, rubber stoppers, or weights. This eliminates the need to hold the case while working, allowing for more efficient work.

[0039] <Film edge holding rod> The structure of the film edge retaining rod is shown in Figure 4. It consists of an extendable metal rod, a ring that fits onto the arm, and a rubber grip for easy holding. When the inner case is pulled out from the outer case, the metal rod can also be extended to match its overall length. The film edge retaining rod temporarily wraps around the ends of the film pulled out from the first and second rolls. This eliminates the stress of the wraps sticking together, which often occurs during the wrapping process, and also makes it easier to apply wider wrap films that combine the first and second films to containers (see Figure 20).

[0040] As shown in Figure 1, a pair of arms supporting the film end holding rods are attached to the front of both ends of the case body.

[0041] <Safety Cutter> As shown in Figures 15 to 17, the safety cutter consists of the safety cutter body and rollers that move along the cutter movement rail. As shown in Figure 15, the cutter part (blade) is exposed inside a small V-shaped notch in the safety cutter body, and is designed so that people's fingers cannot directly touch the cutter part. Therefore, the cutter does not come into direct contact with human skin, preventing injury from the blade as occurs with conventional plastic wrap cases. In addition, because the safety cutter has cutters attached to both ends, it is possible to cut the wrap in the direction that is easiest to slide, regardless of dominant hand. To use, hold the safety cutter by the knob and move it along the cutter movement rail.

[0042] Attaching the roller unit shown in Figure 16 to the back of the safety cutter allows for smooth movement of the safety cutter. In addition, because the cutter movement rail in Figure 3 spans two cases, the outer case and the inner case, four rollers are installed, and by creating a cutter movement rail in the shape shown in Figures 7, 8, and 16 (the diagonal lines indicate the cross section of the case), it is possible to move the safety cutter to both the inner and outer cases, even when extended, as shown in Figure 17. When actually moving only the outer case, the safety cutter is moved using four rollers, but when moving the inner case, two rollers are removed from the movement rail (see Figure 7), and the safety cutter is moved using the other two rollers.

[0043] Furthermore, if the distance between the case body and the safety cutter is too close, the wrap will be short after cutting, which will be inconvenient for the next use, so the distance between the case body and the safety cutter is intentionally set to a specified distance, specifically about 10 to 30 mm.

[0044] <How to use> Next, how to use the wrap case of the present invention will be described.

[0045] First, pull the lever as shown in Figure 3 to slide the inner case to its maximum width, and peel off the second sheet coming out of the second exit from the anti-slip sheet. Next, move the lever as shown in Figure 2 to adjust the overall length of the case body to match the size of the container you want to wrap. Next, pull out the end of the film from each roll, place the wrap on the film end holding rod as shown in Figure 19, and rotate it slightly to wrap the wrap slightly around the rod. Then, hold the film end holding rod and place the wrap on the target plate as shown in Figure 20, then rotate the film end holding rod again to entangle the wrap. This prevents the wraps from sticking together during the process. Return the film end holding rod to its original place after use.

[0046] To cut the film, hold the safety cutter knob shown in Figure 15 and slide the safety cutter sideways while keeping the wrap taut. [Industrial Applicability]

[0047] The wrap film case of the present invention is believed to be particularly suitable for use in the restaurant industry. In restaurants, the use of wrap film is essential for preserving prepared food. Unlike at home, restaurants need to store large amounts of food at once, which requires a relatively wide wrap film. However, narrow wrap film is often used as well. Therefore, the product of the present invention, which is suitable for adjusting the width of wrap film, is believed to be suitable for use in the restaurant industry. [Explanation of symbols]

[0048] Wrap case body 10 Outer case 20 Inner case 30 Lid (for outer case) 20a Lid (for inner case) 30a (Outer case) Opening and closing handle 20b (Inner case) Opening and closing handle 30b Stopper (for outer case lid) 20c Stopper (for inner case lid) 30c Exit 1 22 2nd exit 32 Rubber stopper for first outlet 22a Second outlet rubber stopper 32a Anti-slip sheet (outside Exit 1) 24 Anti-slip sheet (outside the second exit) 34 Rails (protrusions) formed on the inner surface of the outer case 26 Guide (recess) formed on the outer surface of the inner case 36 Inner case protrusion (butt part) 28 Outer case protrusion (butt part) 38 Roll 1 40 2nd Roll 50 1st film 40a 2nd film 50a First roll fixing rod 42 Second roll fixing rod 52 Magnet 42a at the end of the first roll fixing rod Magnet 52a at the end of the second roll fixing rod Magnet on the inside of the inner case 42b Magnet on the inside of the outer case 52b Roll fixing portion 42c (of first roll fixing rod) Roll fixing portion 52c (of second roll fixing rod) Film trajectory adjustment rod 44 Film trajectory adjustment rod joint 44a Rotating part of film trajectory adjustment rod 44b Slide assist rod 46 Slide assist rod joint 46a Lever 60 Film edge holding rod 70 (Film edge holding rod) Rod 70a Film edge holding rod ring 72 Rubber grip for film edge holder 74 Arm 76 Safety Cutter 80 Cutter part (blade) 80a Safety cutter knob 82 Cutter moving rail (outer case) 84 Cutter movement rail (inner case) 86 Rollers for moving the cutter rail 88 Anti-slip (on the back of the unit) 90

Claims

1. A wrap case comprising a case body consisting of an outer case and an inner case, and a safety cutter, The outer case can accommodate the first roll, and the inner case can accommodate the second roll, the inner case is nestable within the outer case and extendable from the outer case; A lever is provided on the outer side surface of the inner case to facilitate movement of the inner case, the outer case has a first outlet for pulling out the film from the first roll, and the inner case has a second outlet for pulling out the film from the second roll; The safety cutter is attached to the case body so as to be slidable in the longitudinal direction, and is capable of cutting the film pulled out from the first and second rolls.

2. The wrap case of claim 1, further comprising a film end holding rod around which the ends of the film pulled out from the first and second rolls can be wound and which can adjust the length of the film with the wound ends pulled out from the case body.

3. 2. The wrap case according to claim 1, wherein the outer case has a first roll fixing bar for rotatably supporting the first roll, and the inner case has a second roll fixing bar for rotatably supporting the second roll.

4. The wrap case according to claim 3, wherein the inner side surface of the inner case has a magnet for removably securing the first roll fixing rod, and the inner side surface of the outer case has a magnet for removably securing the second roll fixing rod.

5. The wrap case according to claim 3, wherein the outer case further has a film trajectory adjustment rod for preventing the film pulled out from the first roll from contacting the second roll or the film pulled out from the second roll within the case body.

6. 6. The wrap case according to claim 5, wherein the film trajectory adjusting rod has a rotating portion that can rotate in synchronization with the withdrawal of the film from the first roll.

7. 2. The cling film case according to claim 1, wherein a part of the inner surface of the outer case and a part of the outer surface of the inner case are provided with abutting portions to prevent the inner case from coming off the outer case.

8. 2. The wrap case according to claim 1, wherein the first outlet and the second outlet are each provided with a stopper for preventing the drawn-out film from rewinding.

9. The wrap case of claim 1, wherein the safety cutter has a body with a pair of left and right notches and a pair of blades exposed only at each notch, and is capable of cutting the film pulled out from the first and second rolls by sliding it in either the left or right direction.

10. 2. The wrap case according to claim 1, wherein the outer case has a bottom outer surface provided with a non-slip surface for fixing the case body.

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