JP7024133B1 - Inner case for film roll storage case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inner case for a film roll accommodating case having a simpler structure. SOLUTION: The film roll accommodating used by accommodating a film roll in which a wrapping film is wound in a roll shape in a film roll accommodating case which accommodates the film roll so as to be retractable from one end thereof. An inner case for a case, comprising a hollow cylindrical substrate with at least one end open and a slit-shaped outlet formed along the longitudinal direction of the substrate, the outlet being inside the substrate. It has a width that allows the packaging film drawn out from the film roll housed in the substrate to be pulled out, and the friction coefficient between the contact surface with the film roll on the inner peripheral surface of the substrate and the outer peripheral surface of the film roll is the outer peripheral surface of the substrate. An inner case that is smaller than the friction coefficient with the inner surface of the film roll storage case. [Selection diagram] Fig. 2

Description

The present invention relates to an inner case for a film roll accommodating case.

A film roll accommodating case is known for accommodating a wrap film or the like wound in a roll shape, pulling out only a required amount, cutting the film, and using the film.

As such a film roll storage case, Patent Document 1 states that "a sheet-shaped cushioning material is stored in a container provided with a drawer and a cutter for cutting the sheet-shaped cushioning material drawn from the drawer at an arbitrary length position. A roll-wound sheet-like cushioning material, which is characterized by the fact that the material has been used. "

In the film roll storage case as described above, for example, a film roll in which a wrap film for food packaging is wound in a roll shape may be stored, and the film roll may be pulled out for use.
In such a case, the outer diameter of the film roll becomes smaller as the wrap film is used, so that the film roll may pop out from the film roll storage case or the film roll may be rewound when the wrap film is pulled out. There were times when I ended up doing it.

In order to solve the above-mentioned problems, an inner case for a film roll accommodating case, which is used by accommodating the film roll accommodating case while being attached to the film roll, may be used.

As such an inner case, Patent Document 1 states, "A cylinder that is slightly larger than the outer diameter of the wrap film in the wrap case storage portion and is adapted to the internal size of the wrap case storage portion, and a cylinder that is deferred. The cylinder is composed of a pedestal that is fixedly connected to the cylinder, and both sides of the cylinder are fully open. Formed as a notched cylindrical body, when the pedestal is mounted inside the wrap case, it gradually inclines slightly inward from both sides to the inside of the wrap case while making surface contact with the inner bottom surface of the wrap case, about 10 mm. It forms a substantially U-shape in a standing shape, and a notched cylinder inside this pedestal is fixedly connected to the bottom surface of the pedestal on the opposite side of the notch opening, and the structure is integrated in that way. A device for preventing plastic wrap from popping out, wrapping, or rewinding, which is characterized in that it is used by mounting a wrap film inside a notched cylindrical body. "

JP-A-2017-132545

According to the auxiliary device for preventing popping out, wrapping, and rewinding of food wrap described in Patent Document 1, although it can be expected to prevent wrapping and rewinding to a certain extent, the shape of the film roll accommodating case has a pedestal. It was complicated. Further, the present inventor has found that if the outer diameter of the film roll accommodating case is cylindrical, there is a problem that the pedestal cannot be accommodated well.

Therefore, it is an object of the present invention to provide an inner case for a film roll accommodating case having a simpler structure (specifically, having no pedestal).

As a result of diligent studies to achieve the above-mentioned problems, the present inventors have found that the above-mentioned problems can be achieved by the following configurations.

[1] Film roll accommodating used by accommodating a film roll in which a packaging film is wound into a roll shape in a film roll accommodating case that can be pulled out from one end thereof and is attached to the film roll. An inner case for a case, comprising a hollow cylindrical substrate having at least one end open and a slit-shaped outlet formed along the longitudinal direction of the substrate.
The outlet has a width capable of pulling out the packaging film drawn from the film roll housed inside the substrate, and the contact surface with the film roll on the inner peripheral surface of the substrate and the film roll. An inner case in which the coefficient of friction with the outer peripheral surface of the film is smaller than the coefficient of friction between the outer peripheral surface of the substrate and the inner surface of the film roll accommodating case.
[2] The inner case according to [1], wherein the substrate is a laminated body in which two or more layers formed of different materials are laminated.
[3] The inner case according to [1] or [2], wherein the contact surface is the top surface of a guide plate that supports the film roll arranged on the inner peripheral surface of the substrate.
[4] The inner case according to [3] or [4], wherein the guide plate has a rounded cross section.
[5] The inner case according to [3], wherein the guide plate is divided along the circumferential direction of the inner peripheral surface.
[6] The inner case according to [5], wherein the guide plates are arranged alternately in the circumferential direction in a plan view of the substrate in an unfolded state.
[7] The inner case according to any one of [1] to [6], further comprising a core rod inserted into the roll core of the film roll and assisting the rotation of the film roll.
[8] The inner case according to any one of [1] to [7], wherein a roller is arranged along the longitudinal direction at the end of the take-out port.
[9] The inner case according to [8], wherein the rollers are divided along the longitudinal direction.
[10] The item according to any one of [1] to [9], wherein a roller for assisting the rotation of the film roll is further arranged on the inner peripheral surface of the substrate along the longitudinal direction. Inner case.

According to the present invention, it is possible to provide a film roll accommodating case having a simpler structure.

It is a perspective view of one form of the film roll accommodating case in which the inner case of this invention is accommodating. It is a perspective view of the inner case of this invention. It is a perspective view of the film roll accommodating body including the inner case in which a film roll is attached, and the film roll accommodating case in which the film roll is accommodating. It is sectional drawing of the main part of the said film roll accommodating body. It is sectional drawing of the substrate which is a laminated body. (A) is an explanatory view of a method of deploying a substrate for illustrating the form of a guide plate, and (b) to (d) are based on the above-mentioned deployment method in a plan view in a deployed state of the substrate. It is a figure which shows the other form of a guide plate. It is sectional drawing of the main part of the film roll accommodating body including the 2nd Embodiment of the inner case of this invention. It is explanatory drawing of the 3rd Embodiment of the inner case of this invention.

Hereinafter, the present invention will be described in detail.
The description of the constituent elements described below may be based on a representative embodiment of the present invention, but the present invention is not limited to such embodiments.
In the present specification, the numerical range represented by using "-" means a range including the numerical values before and after "-" as the lower limit value and the upper limit value.

[Explanation of terms]
As used herein, the term "film roll" means a wrapping film wound in a roll shape, and typically, a long wrapping film is wound around a roll core such as a paper tube. It is made into a roll.
The use of the packaging film is not particularly limited, but it is preferably for food packaging and the like.
The material of the packaging film is not particularly limited, but polyvinylidene chloride, vinyl chloride resin, polyethylene, polymethylpentene and the like are preferable.

In the present specification, the "film roll accommodating case" is a case for accommodating the film roll, and means a case in which one end of the packaging film can be pulled out from the film roll and used. For example, food wrap films and the like may be distributed as a film roll accommodating body including a film roll and a film roll accommodating case for accommodating the film roll.
Further, in recent years, it is often the case that only a film roll is purchased and refilled in a film roll storage case.

The material of the film roll accommodating case is not particularly limited, and examples thereof include paper, metal, and resin. Further, as will be described later, the film roll accommodating case may have teeth for cutting the drawn out packaging film to an arbitrary length, and these teeth are also made of the same material as described above. can do.

As used herein, the term "inner case" means a case used by being housed in a film roll storage case. When an inner case is used, the film roll is attached to the inner case to form a film roll with an inner case, and the film roll with the inner case is housed in the film roll container and used.

[Inner case (first embodiment)]
The inner case of the present invention (hereinafter, also referred to as “the inner case”) has a hollow cylindrical substrate having at least one end open and a slit-shaped outlet formed along the longitudinal direction of the substrate. Be prepared. This inner case is mounted on a film roll and then housed in a film roll storage case for use.
Hereinafter, the inner case of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a form of a film roll accommodating case in which the inner case is accommodating.
The film roll accommodating case 100 has a main body for accommodating a film roll (film roll with an inner case) and a lid body that can be opened and closed with respect to the main body.

The main body has a bottom plate 101, a left side plate 103 raised from each side of the bottom plate 101, a right side plate 104, a back plate 105, and a front plate 102.

The lid body is openable and closable with respect to the main body, and has a top plate 106 that covers the opening of the main body when closed, and a leading edge plate 107 that covers the upper outer surface side of the front plate 102 of the main body. A tooth 108 is provided at the tip of the leading edge plate 107 along the longitudinal direction so that the packaging film drawn from the film roll can be cut to a required length.

From the film roll housed in the main body (inside) of the film roll storage case 100, one end of the packaging film can be pulled out from between the front plate 102 and the leading edge plate 107, and any of them can be used by using the teeth 108. Can be cut to length.

The inner case is housed in the film roll housing case 100 in a state of being mounted on the film roll.
FIG. 2 is a perspective view of the inner case of the present invention.

The inner case 200 includes a hollow cylindrical base 201 having both ends open, and a slit-shaped outlet 204 formed along the longitudinal direction of the base 201 and having a width capable of pulling out the packaging film. .. Both ends of the substrate 201 are open, and the film roll can be slid and inserted from the opened ends to be mounted.
That is, the inner diameter of the substrate 201 is a size that can accommodate the film roll, and the outer diameter of the substrate 201 is a size that can be accommodated in the film roll accommodating case 100.

In the inner case 200, both ends of the substrate 201 are open, but the inner case of the present invention is not limited to the above, and at least one end may be open. If one end is open, the film roll can be slid and inserted for mounting.

A guide plate 202 for supporting (rotatably) the film roll along the circumferential direction is arranged on the inner peripheral surface of the inner case 200. The guide plate 202 is divided into two along the circumferential direction, and four sets are arranged along the longitudinal direction with this as one set.

The form of the guide plate of the inner case of the present invention is not limited to the above. As long as the guide plate can rotatably support the film roll, for example, two sets may be arranged in the longitudinal direction, or five or more sets may be arranged.
Further, although each guide plate is divided into two in the circumferential direction, it may not be divided into two, or may be divided into three or more.

Further, the inner case of the present invention does not have to have a guide plate. When the inner case of the present invention has a guide plate, the contact surface on the inner case side with respect to the outer peripheral surface of the film roll described later is the top surface of the guide plate. On the other hand, when the inner case does not have a guide plate, the contact surface on the inner case side with respect to the outer peripheral surface of the film roll may be the inner peripheral surface of the inner case.

FIG. 3 is a perspective view of a film roll container including an inner case on which the film roll is mounted and a film roll storage case in which the film roll is housed, and FIG. 4 is a cross-sectional view of a main part thereof.

In the film roll accommodating body 400, one end of the packaging film 502 is pulled out from the film roll 501 rotatably supported by the guide plate 202 arranged on the inner peripheral surface of the substrate 201 via the outlet 204.

A roller 203 is arranged along the longitudinal direction at the end of the outlet 204 of the inner case 200. The packaging film 502 is guided by the roller 203 as it is pulled out from the outlet 204. Therefore, it can be pulled out more smoothly.

In the inner case 200, the roller 203 is divided into three along the longitudinal direction, but the roller of the inner case of the present invention may not be divided or may be divided into four or more. .. Further, the inner case of the present invention does not have to have the above rollers.

The packaging film 502 drawn out from the outlet 204 is pulled out of the film roll accommodating case 100 through between the front plate 102 and the leading edge plate 107 in a state where the lid of the film roll accommodating case 100 is closed. The drawn packaging film 502 can be cut to any length by the teeth 108.

The present inventor has the usefulness of a film roll storage case that can be used repeatedly by refilling the film rolls in accordance with the goal of "ensuring sustainable consumption and production patterns" set forth in the SDGs (Sustainable Development Goals). Focusing on, we have continued research and development.

In the process, as a result of diligent research on an inner case for a film roll storage case that can be applied to a film roll storage case having various shapes and dimensions, in an auxiliary device as described in Patent Document 1, Considering that the pedestal is one of the factors that make the structure complicated and difficult to manufacture, we abolished the pedestal and started to develop a simpler cylindrical inner case.

However, if only the pedestal is abolished, the inner case may rotate as the film roll rotates when the packaging film is pulled out, and the posture of the inner case is maintained in the film roll accommodating case. It was found that it was difficult to take out the packaging film smoothly.

In order to solve the above-mentioned new problems caused by eliminating the pedestal of the inner case, the inner case of the present invention has a friction coefficient between the contact surface with the film roll on the inner peripheral surface of the substrate and the outer peripheral surface of the film roll. (Hereinafter, also referred to as "friction on the inner peripheral surface") is smaller than the coefficient of friction between the outer peripheral surface of the substrate and the inner peripheral surface of the film roll accommodating case (hereinafter, also referred to as "friction on the outer peripheral surface"). It is configured as follows.

Due to the above characteristics, even when the film roll is rotated when the packaging film is pulled out, the friction on the inner peripheral surface is smaller than the friction on the outer peripheral surface, so that the film roll is easy to rotate, but the inner case is a film roll. The effect of easily maintaining the posture was obtained by friction with the storage case.

In the inner case 200, the contact surface is the top surface of the guide plate 202. Therefore, in the inner case 200, the friction on the inner peripheral surface is the friction between the outer peripheral surface of the film roll 501 and the top surface of the guide plate 202, and the friction on the outer peripheral surface is the friction between the inner surface of the film roll accommodating case 100 and the outer periphery of the substrate. The material, surface treatment, etc. are selected based on the friction with the surface.

The method of making the friction of the inner peripheral surface smaller than the friction of the outer peripheral surface is not particularly limited, but as one form, when the materials of the substrate 201 and the guide plate 202 are the same in the inner case 200, the guide plate 202 There is a method of matting the top surface of. By matting the top surface of the guide plate 202, the surface roughness of the top surface of the guide plate 202 becomes larger than that of the outer peripheral surface of the substrate 201, and as a result, the number of contacts with the film roll 501 is reduced. As a result of the friction on the inner peripheral surface becoming smaller, the film roll 501 becomes easier to rotate.

The matte processing is an example of a method for roughening the surface, and in addition to the above, it can also be carried out by, for example, a method such as scraping the inner peripheral surface with a general file or the like.

Further, as a method other than the above, for example, a method of using different materials for the base 201 and the guide plate 202, that is, a method of laminating a guide plate 202 of different materials on the base 201 can be mentioned.

In this case, the material of the inner case 200 is selected in consideration of the material of the inner surface of the film roll accommodating case 100 and the material of the outer peripheral surface of the film roll 501.

For example, the packaging film of the film roll includes polyvinylidene chloride, vinyl chloride resin, polyethylene, polymethylpentene and the like; polyethylene and a composite resin containing polypropylene, nylon, and a composite resin containing polyethylene; When the film roll accommodating case 100 is made of acrylic resin, polyolefin resin, polystyrene resin, acrylonitrile butadiene styrene resin, polypropylene resin, polyethylene, or the like, the outer peripheral surface of the film roll (base of the film roll) is made of silicone resin. , And a fluororesin such as a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin and a polytetrafluoroethylene resin, which are formed of polyvinyl chloride or the like and laminated with a rubber adhesive or the like, are used. be able to.

The above is the same even when the inner case does not have a guide plate.
When the inner case does not have a guide plate, the contact surface with the outer peripheral surface of the film roll on the inner peripheral side of the inner case is the inner peripheral surface of the inner case itself.

In this case, as a method of making the friction of the inner peripheral surface smaller than the friction of the outer peripheral surface, a method of matting the inner peripheral surface of the inner case (increasing the surface roughness) can be mentioned.
Further, as another form, there is a method of forming a substrate into a laminated body of two or more kinds of layers made of different materials.

FIG. 5 is a cross-sectional view of a substrate which is a laminated body. The substrate 201 is composed of two layers, a first layer 301 and a second layer 302, from the inner peripheral side. Of these, the material of the first layer 301 may be, for example, the above-mentioned fluororesin, and the material of the second layer may be, for example, the above-mentioned silicone resin or the like.
Although the substrate 201 is a laminate of two layers in FIG. 5, it may have three or more layers. For example, a form in which an adhesive layer is further provided between the first layer 301 and the second layer 302 can be mentioned.

(Other forms of guide plate)
Next, another form of the guide plate included in this inner case will be described.
FIG. 6A is an explanatory diagram of a conceptual base unfolding method for illustrating the form of the guide plate, and FIGS. 6B to 6D are states in which the base is unfolded based on the above-mentioned unfolding method. Represents another form of the guide plate in a plan view.

First, a method of developing the substrate will be described. As shown in FIG. 6A, both ends of the outlet 204 in the substrate 201 are widened in the direction of the arrows (directions away from each other), and the C-shaped substrate 201 in cross-sectional view is developed in a plane. (Conceptually). At this time, it is developed so that the inner peripheral surface side of the substrate 201 can be seen on the front side of the paper surface.

In FIG. 6B, which is a substantially plan view of the substrate developed by the above method, each of the three guide plates 601 arranged along the longitudinal direction of the substrate 201 has a substantially trapezoidal cross section, and the upper and lower sides thereof. It is a single streak that spans both ends of the. The guide plate 601 is not divided in the circumferential direction of the substrate 201 because the substrate 201 has a single streak extending over the upper and lower ends in the unfolded state.

At this time, the top surface 602 of the guide plate is matted.
The reason why the view is taken in a substantially plan view is that the drawing is from a viewpoint shifted to the lower side of the paper surface from directly above the substrate in order to illustrate the cross-sectional shape of the guide.

The cross section of the guide plate 601 is trapezoidal, but the shape of the guide plate is not limited to the above. It is preferable that the cross section of the guide plate has a rounded shape because the film roll is not easily damaged.

In FIG. 6C, the three guide plates 603 arranged along the longitudinal direction of the substrate 201 are divided into three along the circumferential direction.

Further, in FIG. 6D, the guide plates 604 are arranged alternately along the circumferential direction. By arranging in this way, the film roll tends to rotate more smoothly.
As described above, the number of guide plates, the number of divisions, and the arrangement can be freely changed within the range in which the effect of the present invention is exhibited.

(Second embodiment of the inner case)
FIG. 7 is a cross-sectional view of a main part of the film roll accommodating body including the second embodiment of the inner case of the present invention.
This inner case is the same as the first embodiment except that it has a bottom roller 702 instead of the guide plate, and the above differences will be described.

In the film roll accommodating body 700, the inner case 701 has a bottom roller 702 instead of the guide plate. The bottom roller supports the film roll 501 freely in rotation, and assists the rotation of the film roll 501 by the rotation of the roller. According to the film roll container including the inner case, the packaging film can be taken out more smoothly.

In the present embodiment, the contact surface with the film roll on the inner peripheral surface of the substrate is the roller surface of the bottom roller 702, and the friction on the inner surface is adjusted with reference to the roller surface.

(Third embodiment of the inner case)
FIG. 8 is an explanatory diagram of a third embodiment of the inner case of the present invention.
The inner case 800 has a core rod 802 that is inserted into the roll core 503 of the film roll 501 and assists the rotation of the film roll 501, and a support rod 801 that supports the core rod 802. As a result of stabilizing the film roll 501 as described above, the film rolls 501 to rotate more smoothly, which makes it easier to take out the packaging film.
The material of the core rod 802 and the support rod 801 is not particularly limited, and the same material as that of the film roll accommodating case can be used.

100: Film roll storage case, 101: Bottom plate, 102: Front plate, 103: Left side plate, 104: Right side plate, 105: Back plate, 106: Top plate, 107: Front edge plate, 108: Teeth, 200: Inner Case, 201: substrate, 202: guide plate, 203: roller, 204: outlet, 301: first layer, 302: second layer, 400: film roll container, 501: film roll, 502: packaging film, 503: Roll core, 601: Guide plate, 602: Top surface, 603: Guide plate, 604: Guide plate, 700, Film roll housing, 701: Inner case, 702: Bottom roller, 800: Inner case, 801: Support Rod, 802: Core rod,

Claims (2)

For a film roll accommodating case, which is used by accommodating a film roll in which a packaging film is wound into a roll shape in a film roll accommodating case that can be pulled out from one end thereof and is attached to the film roll. It ’s an inner case,
A hollow cylindrical substrate having at least one end open and a slit-shaped outlet formed along the longitudinal direction of the substrate are provided.
The outlet has a width capable of pulling out the packaging film drawn from the film roll housed inside the substrate.
The contact surface with the film roll on the inner peripheral surface of the substrate is the top surface of the guide plate that supports the film roll disposed on the inner peripheral surface of the substrate.
The top surface is matted to increase the surface roughness of the top surface as compared with the outer peripheral surface of the substrate and reduce the contact points with the film roll, whereby the contact surface and the film roll are reduced. The coefficient of friction with the outer peripheral surface of the film is smaller than the coefficient of friction between the outer peripheral surface of the substrate and the inner surface of the film roll accommodating case.
The cross section of the guide plate has a rounded shape.
The guide plate is divided along the circumferential direction of the inner peripheral surface.
An inner case in which the guide plates are alternately arranged in the circumferential direction in a plan view of the substrate in an unfolded state . For a film roll accommodating case, which is used by accommodating a film roll in which a packaging film is wound into a roll shape in a film roll accommodating case that can be pulled out from one end thereof and is attached to the film roll. It ’s an inner case,
A hollow cylindrical substrate having at least one end open and a slit-shaped outlet formed along the longitudinal direction of the substrate are provided.
The outlet has a width capable of pulling out the packaging film drawn from the film roll housed inside the substrate.
The contact surface with the film roll on the inner peripheral surface of the substrate is matted to increase the surface roughness of the contact surface as compared with the outer peripheral surface of the substrate and reduce the contact with the film roll. By doing so, the friction coefficient between the contact surface and the outer peripheral surface of the film roll is made smaller than the friction coefficient between the outer peripheral surface of the substrate and the inner surface of the film roll accommodating case.
A roller is arranged along the longitudinal direction at the end of the outlet.
An inner case in which the rollers are divided along the longitudinal direction .

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