JP6078454B2 - Film roll end face protector and film roll package - Google Patents

Description

  The present invention relates generally to an end face protector for a film roll that can be reduced in cost and recycled, and more particularly to an end face protector that is improved so that a protruding portion becomes strong. The present invention relates to a film roll package fixed with such an end face protector.

  FIG. 11 is a perspective view of an end face protector of a conventional film roll. A plate-like member 2 formed by stacking two rectangular corrugated paper sheets 1 is provided with a protruding portion 3 made of plastic to constitute an end face protector 4. The end surface protectors 4 are disposed on both end surfaces of the film roll 5 as shown in FIGS. The protruding portions 3 of both end face protectors 4 and 4 are inserted into the hollow portion of the core 6 of the film roll 5. The film roll 5 is, for example, a heat-shrinkable cylindrical label, stretch label, or other film wound around a core in a roll shape. The end face protector 4 receives both ends of the core 6 of the film roll 5.

  In this state, as shown in FIG. 13 (A), the film roll 5 is vertically placed and packed in a cardboard box 7, and as shown in FIG. 13 (B), the top and bottom lids are glue tape. 8 and so on. As shown in FIG. 14, a plurality of cardboard boxes 7 containing film rolls are placed on a pallet 9, bundled by a PP band 10, and conveyed by a truck or the like. If the end face protector 4 is not attached, the film roll 5 may move in the cardboard box 7 and the end face of the film roll 5 may be damaged. If the end face protector 4 is attached, the film roll 5 The movement in the corrugated cardboard box 7 is restricted, and the film roll 5 is prevented from being damaged.

  By the way, since the end face protector 4 of such a conventional film roll is formed by two members of the corrugated paper 1 and the plastic which is the protruding portion 3, it is costly and needs to be separated when recycled. Therefore, recycling work is not easy.

  As another conventional technique, a technique related to a cylindrical end fixing member formed of corrugated paper that is disposed at the opening end of a photosensitive drum is proposed, although it is not a film roll end face protector, but its structure is complicated. And is not easy to manufacture (see, for example, Patent Document 1).

JP-A-9-295665

  In the end face protector 4 of the conventional film roll, there existed the following problem besides the above-mentioned problem. That is, when the order of the film roll is large, as shown in FIG. 14, a plurality of cardboard boxes 7 can be bundled with the PP band 10 or the like and conveyed in the vertical direction. When a plurality of cardboard boxes 7 are bundled, it is possible to prevent the cardboard box 7 with the film roll 5 standing in the vertical direction from falling down. If it is conveyed in the direction, it falls on the pallet 9, so that it must be conveyed with the cardboard box 7 lying on its side with reference to FIG.

  However, referring to FIG. 15 (B), when the film roll 5 is conveyed while being laid sideways, the protrusion 3 and the plate-like member 2 are separate members and are of a fitting type, so that the weight of the film roll 5 is fragile. Endurance protection device 4 will be broken. As a result, the movement of the film roll 5 in the cardboard box 7 is not regulated, and there is a problem that the expensive film roll 5 is damaged.

  An object of the present invention is to solve the above-described problems, and an object of the present invention is to provide an end face protection device for a film roll which is improved so as not to break even if it is laid down.

  Another object of the present invention is to provide an end face protector for a film roll which can be reduced in cost and can be easily recycled.

  Still another object of the present invention is to provide a film roll package fixed with an end face protector of such a film roll.

  The present invention relates to an end face protector for a film roll having protrusions that are arranged on both end faces of the film roll to protect the end face of the film roll and stand upright on the surface of the plate-like member. The plate-like member is formed by folding both end surfaces of the long side cardboard sheet inward. The projecting portion includes (a) a first cylindrical upright member in which first and second upright members having three wall surfaces are opposed to each other with both side surfaces facing each other, and (b) third and fourth members having three wall surfaces. The upright member is composed of a second cylindrical upright member that surrounds the first cylindrical upright member with both side surfaces facing each other and facing each other. The first and second upright members are each cut out from the central portion of the long side cardboard sheet. The third upright member is cut out from one of both end faces of the long side cardboard sheet, and the fourth upright member is cut out from the other end face of the long side cardboard sheet. And

  According to this invention, since the projecting portion is constituted by the first cylindrical upright member and the second cylindrical member surrounding the first cylindrical upright member, the first cylindrical upright member and the second cylindrical member are mutually connected. Reinforce each other and become a strong protrusion. Further, the plate-like member is strong because it is made of one cardboard sheet. Both the plate-like member and the protrusion are formed of corrugated cardboard.

  According to a preferred embodiment of the present invention, the third upright member is provided with a first engaging claw, and the first engaging claw penetrates the side wall of the fourth upright member, and enters the protruding portion. It has entered. The fourth upright member is provided with a second engaging claw, and the second engaging claw penetrates the side wall of the third upright member and enters the protruding portion. Thus, the second cylindrical upright member is firmly fixed while surrounding the first cylindrical upright member.

  According to a further preferred embodiment of the present invention, the third upright member is provided with a first engaging claw, and the first engaging claw includes a side wall of the fourth upright member and the first upright member. Further, the side wall of the second upright member is pushed inward. The fourth upright member is provided with a second engaging claw, and the second engaging claw passes through the side wall of the third upright member and the second upright member, and further, the first upright member. The side wall is pushed inward.

  If comprised in this way, the side wall of a 1st upright member and the side wall of a 2nd upright member will stand up on a diagonal line by planar view in a pipe | tube, and it will become a firmer protrusion part.

  According to a more preferred embodiment of the present invention, a first sheet engaging claw is provided on one of both end faces of the long side cardboard sheet, and the other end face of the long side cardboard sheet is provided with the above A first sheet engaging groove for engaging the first sheet engaging claw is provided. When both end faces of the corrugated cardboard sheet are folded inward, the first sheet engaging claws engage with the first sheet engaging grooves. As a result, the plate-like member is stabilized in a state in which two cardboard sheets are stacked.

  According to a further preferred embodiment of the present invention, the corrugated cardboard sheet is formed by corrugated paper sandwiched between front and back paper and bonded, and both end edges of the long side corrugated cardboard sheet are folded inwardly. The other paper on the outward side is cut so that the paper on the inward side is exposed. This is to facilitate folding.

  In the film roll package according to another aspect of the present invention, the film roll end face protector is disposed on both end faces of the film roll, and the protruding portion is inserted into a cavity of the core of the film roll. A roll is fixed in a vertical direction or a horizontal direction and stored in a cardboard box.

  According to the present invention, since the projecting portion is constituted by the first cylindrical upright member and the second cylindrical member surrounding the first cylindrical upright member, the first cylindrical upright member and the second cylindrical member are mutually connected. Reinforce each other and become a strong protrusion. Further, the plate-like member is strong because it is made of one cardboard sheet. Since both the plate-like member and the protruding portion are formed of corrugated paper, recycling is easy.

(A) is a perspective view of the end surface protector of the film roll which concerns on Example 1, (B) is an enlarged view of a protrusion part. (A) is a developed view of the end face protector 11, and (B) is cut out on the center part (A face) and both end faces (B face and C face) when both ends are folded (manifold folding). It is an isometric view showing each of the upright members in three dimensions. (A) is a conceptual diagram showing a state in which a corrugated cardboard sheet is folded at both ends, and (B) is a relationship between engagement claws and engagement grooves at that time, positions of A surface, B surface, and C surface. It is a figure which shows a relationship. (A) shows the transition state immediately before the folding at both ends is completed, (B) is a perspective view when the folding at both ends is completed, and (C) is a front view of the D edge in FIG. 4 (B). is there. It is sectional drawing which shows the process until it accommodates a film roll in a cardboard box using the end surface protector of the film roll which concerns on Example 1. FIG. (A) is a perspective view of the end surface protector of the film roll which concerns on Example 3, (B) is an enlarged view of a protrusion part. (A) is an expanded view of the end surface protector which concerns on Example 3, (B) is a center part (A surface) and both end surface (B surface and C surface) at the time of both-ends fold (a kannon folding) It is the isometric view which showed each of the member cut out and standing upright three-dimensionally. (A) shows the transition state just before the end of the assembly after folding at both ends, and (B) is an enlarged view of the protruding portion. It is a figure which shows the relationship of the engagement nail | claw and engagement groove | channel of the last stage of an assembly, and the positional relationship of A surface, B surface, and C surface. It is a perspective view when the assembly of the end surface protector of the film roll which concerns on Example 3 is completed. It is a perspective view of the end surface protector of the conventional film roll. It is a figure which shows the usage method of the end surface protector of the conventional film roll. (A) It is a figure which shows a mode that the end surface protector of the conventional film roll is attached to a film roll, and accommodates a cardboard box, (B) is a figure which shows a mode that the cardboard box was sealed with the gummed tape. It is a perspective view when a plurality of cardboard boxes containing film rolls are placed on a pallet and fixed with a PP band, and is a view immediately before trucking. It is a figure explaining the problem of the end surface protector of the conventional film roll.

  For the purpose of obtaining an end face protector for a film roll that is improved so as not to break even if it is laid down, a first cylindrical upright member that reinforces the projecting portions and a second cylindrical member that surrounds the first cylindrical upright member This was realized by cutting them out from one cardboard sheet.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

  With reference to FIG. 1 (A) and FIG. 1 (B), the end surface protector 11 is for arrange | positioning at the both end surfaces of a film roll, and protecting the end surface of this film roll, It has a protrusion 13 that stands upright on the surface, and is made of a single cardboard sheet 14. The corrugated cardboard sheet 14 is formed by sandwiching a corrugated paper sheet between a cover sheet and a back sheet. This will be described later.

  The plate-like member 12 is formed by folding both end faces of the long side cardboard sheet 14 inward. With reference to FIG. 1B, the protruding portion 13 includes a first cylindrical upright member 17 and a second cylindrical upright member 20 that surrounds the first cylindrical upright member 17. The first cylindrical upright member 17 has a first upright member 15 and a second upright member 16 having three wall surfaces facing each other with both side surfaces overlapped with each other. The second cylindrical upright member 20 is configured such that a third upright member 18 and a fourth upright member 19 having three wall surfaces face each other with their both side surfaces overlapped with each other.

  According to the end face protector 11 according to the embodiment, the plate-shaped member 12 and the protruding portion 13 are integrally formed with one cardboard sheet, which is strong. Referring to FIG. 1A, the plate-like member 12 that protects the end face of the film roll is strong because two cardboard sheets are stacked. Furthermore, referring to FIG. 1 (B), the protruding portion 13 is composed of a first cylindrical upright member 17 and a second cylindrical member 20 surrounding the first cylindrical upright member 17, and therefore the first cylindrical upright member 17. And the second cylindrical member 20 reinforce each other to form a strong protrusion 13. Furthermore, referring to FIG. 1 (B), the corners of the protrusions 13 are strong because three sheets of corrugated paper are stacked.

  Next, the structure of the end face protector 11 will be further clarified while explaining the manufacturing method.

  FIG. 2A is a development view of the end face protector 11, and a single cardboard sheet 14 is cut (solid line) and creased (dotted line). The fold line (dotted line) is half-cut in the thickness direction to facilitate folding. This will be described later. Corrugated cardboard sheet 14 is formed by sandwiching corrugated paper 22 between a front cover and a back paper. In the figure, the sharp portion of the top of the wave of the paper 22 processed into a wave shape is also shown.

  Referring to FIGS. 2A and 2B, the first upright member 15 and the second upright member 16 are each cut out from the central portion (A surface) of the corrugated cardboard sheet 14 having a long side. The third upright member 18 is cut out from one of both end surfaces (B surface) of the long side cardboard sheet 14, and the fourth upright member 19 is the other of both end surfaces (C surface) of the long side cardboard sheet 14. It is cut out from. Fingers for making it easy to stand the first and second upright members 15 and 16 with the fingers so as to be in contact with the first and second upright members 15 and 16 at the central portion (surface A) of the long side cardboard sheet Through-holes 15h and 16h are provided so as to pass through.

  Referring to FIG. 2B, the third upright member 18 is provided with a first engaging claw 18a, and the fourth upright member 19 is engaged with the first engaging claw 18a. A groove 19a is provided. The third upright member 18 is provided with a second engaging groove 18b, and the fourth upright member 19 is provided with a second engaging claw 19b that engages with the second engaging groove 18b.

  As shown in FIG. 3 (A), the corrugated cardboard sheet 14 is folded at both ends (folding folding). After folding both ends, referring to FIG. 3B, the first engaging claw 18a provided on the third upright member 18 is engaged with the first engaging groove 19a provided on the fourth upright member 19. Thus, by engaging the second engaging claw 19b provided on the fourth upright member 19 with the second engaging groove 18b provided on the third upstanding member 18, the second cylindrical upright member is engaged. 20 firmly surrounds the first cylindrical upright member 17. In FIG. 3 (B), the fold line 21a is separated, but this is drawn separated for convenience in drawing, but the fold line 21b is not separated as shown in FIG. 3 (A). Is the same.

  FIG. 4A shows a transition state immediately before the folding at both ends is completed. In order to clarify the positional relationship, only the skeleton structure is shown for the B and C planes. Referring to the transition state diagrams of FIGS. 3 and 4A, one end (B surface) of the long side corrugated cardboard sheet 14 is provided with a first sheet engaging claw Ba. A first sheet engaging groove C-a for engaging the first sheet engaging claw Ba is provided on the other end (C surface) of the both end surfaces of the side corrugated cardboard sheet 14. A second sheet engaging groove B-b is provided on one of both end faces (B face) of the sheet 14, and a second sheet engaging groove is provided on the other end face (C face) of the long side corrugated cardboard sheet 14. There are provided second sheet engaging claws C-b that engage with the grooves B-b, and these are engaged when the both end faces B and C are further folded inward and the folding at both ends is completed. .

  Referring to FIG. 3B, the first sheet engaging groove Ca is formed by cutting out the second engaging claw 19b and leaving it on the C surface. The second sheet engaging groove B-b is formed by cutting out the first engaging claw 18a and leaving it on the B surface. The position and size of the second sheet engaging claw Cb are selected and cut out on the C surface so as to fit into the second sheet engaging groove Bb. The position and size of the first sheet engaging claw Ba are selected so as to fit into the first sheet engaging groove Ca, and are cut out on the B surface.

  FIG. 4B is a perspective view when the folding at both ends is completed, and corresponds to FIG.

  FIG. 4C is a front view of the D edge, that is, the fold line 21a in FIG. 4 (B) and 4 (C), the corrugated cardboard sheet 14 is formed by sandwiching a corrugated paper 22 between front and back papers 23 and 24. FIG. The folds 21a and 21b at both edges formed by folding both end faces of the long side corrugated cardboard sheet inwardly cut the outward paper 23 so that the inward paper 24 is exposed. It is rare (half cut). This is to facilitate folding. The long side corrugated cardboard sheet 14 is connected by a single sheet of paper at the folds 21a and 21b, that is, by the paper 24 on the side facing inward.

  Next, a process until the film roll is stored in a cardboard box using the above-described end face protector will be described. With reference to FIG. 5A, the end surface protector 11 is disposed on both end surfaces of the film roll 6. As shown in FIG. 5B, the protruding portion 13 that stands upright on the surface of the plate-like member 12 of the end face protector 11 is inserted into the hollow portion of the core 6 of the film roll 5. In this state, referring to FIG. 5 (C), the film roll 5 is laid down in the vertical direction or stored in the cardboard box 7. The top and bottom lids of the cardboard box 7 are sealed with gummed tape or the like. The obtained film roll package is placed on a pallet while lying down or standing in the vertical direction and conveyed by a truck or the like. The movement of the film roll 5 is restricted in the cardboard box 7 by the end face protection device 11, and the film roll 5 does not come into contact with the inner wall of the cardboard box 7 and is not damaged at all. After transporting, the cardboard box 7 and the end face protector 11 after taking out the film roll 5 are only corrugated paper, and thus are recycled as they are.

  According to the present embodiment, referring again to FIG. 1B, the projecting portion 13 is constituted by the first cylindrical upright member 17 and the second cylindrical member 20 surrounding the first cylindrical upright member 17, so that the first The cylindrical upright member 17 and the second cylindrical member 20 reinforce each other to form a strong protrusion 13. Moreover, since the corner | angular part of the protrusion part 13 becomes 3 sheets of cardboard sheets, it is strong. Furthermore, referring to FIG. 2B, the wave direction of the corrugated cardboard constituting the first cylindrical upright member 17 (the first upright member 15 and the second upright member 16) and the second cylindrical upright member 20 Since the wave directions (22) of the corrugated cardboard constituting the (third upright member 18 and fourth upright member 19) are orthogonal to each other, they are resistant to bending. These effects synergistically provide a strong film roll end face protector 11 that does not break even if it lies sideways.

  In the first embodiment, referring to FIG. 1B again, the third upright member 18 is provided with a first engaging claw 18 a, and the first engaging claw 18 a is a side wall of the fourth upright member 19. The fourth upright member 19 is provided with a second engaging claw 19b, and the second engaging claw 19b passes through the side wall of the third upright member 18. However, the present invention is not limited to this example.

  The main difference between the end face protector according to the third embodiment and the end face protector according to the first embodiment is that the third upright member 18 is provided with a first engaging claw 18a with reference to FIG. 6B described later. The first engaging claw 18a penetrates the side walls of the fourth upright member 19 and the first upright member 15, and further pushes the side wall of the second upright member 16 inward. Similarly, the fourth upright member 19 is provided with a second engaging claw 19b. The second engaging claw 19b penetrates the side walls of the third upright member 18 and the second upright member 16, and further 1 is that the side wall of the upright member 15 is pushed inward. Further details will be described.

  With reference to FIGS. 6A and 6B, the end face protector 11 according to the third embodiment has a protruding portion 13 that stands upright on the surface of the plate-like member 12, and a single cardboard sheet 14. Made from.

  The plate-like member 12 is formed by folding both end faces of the long side cardboard sheet 14 inward. With reference to FIG. 6B, the protruding portion 13 includes a first cylindrical upright member 17 and a second cylindrical upright member 20 that surrounds the first cylindrical upright member 17. The first cylindrical upright member 17 has a first upright member 15 and a second upright member 16 having three wall surfaces facing each other with both side surfaces overlapped with each other. The second cylindrical upright member 20 is configured such that a third upright member 18 and a fourth upright member 19 having three wall surfaces face each other with their both side surfaces overlapped with each other.

  According to the end face protector 11 according to the third embodiment, the plate-shaped member 12 and the protruding portion 13 are integrally formed with a single cardboard sheet, which is strong. In addition, referring to FIG. 6A, the plate-like member 12 that protects the end face of the film roll is strong because two cardboard sheets are stacked. Furthermore, referring to FIG. 6 (B), the protruding portion 13 is constituted by the first cylindrical upright member 17 and the second cylindrical member 20 surrounding the first cylindrical upright member 17, and therefore the first cylindrical upright member 17. And the second cylindrical member 20 reinforce each other to form a strong protrusion 13. Further, referring to FIG. 6B, the first engaging claw 18a passes through the side walls of the fourth upright member 19 and the first upright member 15, and further, the side wall of the second upright member 16 is inward. Similarly, the second engaging claw 19b penetrates the side walls of the third upright member 18 and the second upright member 16, and further presses the side wall of the first upright member 15 inward. As a result, the side wall of the first upright member 15 and the side wall of the second upright member 16 are erected on a diagonal line in a plan view in the cylinder, which is a stronger protrusion than in the first embodiment. Part 13.

  Next, the structure of the end face protector 11 will be further clarified while explaining the manufacturing method.

  FIG. 7A is a development view of the end face protector 11 according to the third embodiment, and a single cardboard sheet 14 is cut (solid line) and creased (dotted line).

  Referring to FIGS. 7A and 7B, the first upright member 15 and the second upright member 16 are each cut out from the central portion (A surface) of the corrugated cardboard sheet 14 having a long side. The third upright member 18 is cut out from one of both end surfaces (B surface) of the long side cardboard sheet 14, and the fourth upright member 19 is the other of both end surfaces (C surface) of the long side cardboard sheet 14. It is cut out from.

  Referring to FIGS. 7B and 6B, the third upright member 18 is provided with a first engaging claw 18a. The fourth upright member 19 is cut so that the first pushing member 25 pushed inward is cut out by being pushed into the first engaging claw 18a. The region where the first push-in member 25 is formed becomes the first engagement groove 19a through which the first engagement claw 18a passes after the region is pushed.

  The fourth upright member 19 is provided with a second engaging claw 19b. The third upright member 18 is cut so that the second pushing member 26 pushed inward is cut out by being pushed into the second engaging claw 19b. The region where the second pushing member 26 is formed becomes the second engaging groove 18b through which the second engaging claw 19b passes after the second pushing member 26 is pushed.

  Further, the first upright member 15 is cut so as to cut out the third pushing member 27 that pushes the side wall of the second upright member 16 inward by pushing inwardly. The region where the third pushing member 27 is formed becomes the groove 15a after it is pushed. Similarly, the second upright member 16 is cut so as to cut out the fourth pushing member 28 that pushes the side wall of the first upright member 15 inward by pushing inwardly. The region where the fourth pushing member 28 is formed becomes the groove 16a after being pushed.

  FIG. 8A is a perspective view of the end face protector immediately after folding at both ends is completed. FIG. 8B is an enlarged view of the protruding portion 13. About the protrusion part 13, only skeleton structure is shown. From this state, the first engaging claw 18a is then folded in the direction of the arrow so as to pass through the side walls of the fourth upright member 19 and the first upright member 15, and further, the side wall of the second upright member 16 is extended. Push inward. Similarly, the second engaging claw 19b is folded in the direction of the arrow to pass through the side walls of the third upright member 18 and the second upright member 16, and further, the side wall of the first upright member 15 is pushed inward. is there. This will be described in more detail.

  Referring to FIG. 9, when the first push-in member 25 provided in the fourth upright member 19 is pushed inward by the first engaging claw 18 a provided in the third upright member 18, the first push-in is performed. The member 25 further pushes inward the third pushing member 27 cut into the first upright member 15. Then, the third pushing member 27 pushes one side wall of the second upright member 16 inward. Thereby, the side wall of the 2nd upright member 16 stands on a diagonal line by planar view.

  Similarly, the second pushing member 26 provided on the third upright member 18 is pushed inward by the second engaging claw 19 b provided on the fourth upright member 19. The second pushing member 26 further pushes the fourth pushing member 28 cut into the second upright member 16 inward. Then, the fourth pushing member 28 pushes one side wall of the first upright member 15 inward. Thereby, the side wall of the 1st upright member 15 stands on a diagonal line by planar view. In FIG. 9, the fold line 21a is separated, but this is drawn apart for convenience in drawing, and the fold line 21b that is not actually separated is also the same.

  FIG. 10 is a perspective view when the assembly is completed, and corresponds to FIG. Portions that are the same as or correspond to those in FIG. 4B are denoted by the same reference numerals, and description thereof will not be repeated.

  It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The end face protector of the film roll of the present invention does not break even when the film roll lies sideways. Moreover, since both the plate-like member and the protruding portion are formed of corrugated cardboard, recycling is easy.

DESCRIPTION OF SYMBOLS 1 Corrugated paper 2 Plate-shaped member 3 Protruding part 4 Film roll end face protector 5 Film roll 6 Core 7 Corrugated cardboard box 8 Gum tape 9 Pallet 10 PP band 11 End face protector 12 Plate-like member 13 Protruding part 14 Corrugated cardboard sheet 15 First upright Member 16 Second upright member 15a, 16a Groove 15h, 16h Through hole 17 First cylindrical upright member 18 Third upright member 19 Fourth upright member 18a First engagement claw 19a First engagement groove 19b Second engagement Claw 18b Second engaging groove 20 Second cylindrical upright member 21a, 21b Crease 22 Wavy paper 23, 24 Cover or backing paper 25 First pushing member 26 Second pushing member 27 Third pushing Member 28 Fourth pushing member Ba First sheet engaging claw Ca First sheet engaging groove Cb Second sheet engaging B-b second groove sheet engaging

Claims (6)

In an end face protector for a film roll having protrusions that stand upright on the surface of the plate-like member for protecting the end face of the film roll disposed on both end faces of the film roll,
The plate-like member is formed by folding both end faces of the long side cardboard sheet inwardly,
The protrusion is
(A) a first cylindrical upright member in which first and second upright members having three wall surfaces are opposed to each other with both side surfaces stacked on each other;
(B) the third and fourth upright members having three wall surfaces are formed of a second cylindrical upright member surrounding both sides of the first cylindrical upright member, facing each other.
The first and second upright members are each cut out from a central portion of the long side cardboard sheet,
The third upright member is cut out from one of both end faces of the long side cardboard sheet, and the fourth upright member is cut out from the other end face of the long side cardboard sheet. Film roll end face protector. The third upright member is provided with a first engaging claw, and the first engaging claw penetrates the side wall of the fourth upright member and enters the protrusion.
The said 4th upright member is provided with the 2nd engaging claw, This 2nd engaging claw penetrates the side wall of the said 3rd upright member, and has penetrated in the said protrusion part. Film roll end face protector. The third upright member is provided with a first engaging claw, and the first engaging claw penetrates the side wall of the fourth upright member and the first upright member, and further, Pushing the side wall inward,
The fourth upright member is provided with a second engaging claw, and the second engaging claw passes through the side wall of the third upright member and the second upright member, and further, the first upright member. The end surface protector of the film roll of Claim 1 which is pushing in the side wall of inward. A first sheet engaging claw is provided on one of both end faces of the long side cardboard sheet,
A first sheet engaging groove for engaging with the first sheet engaging claw is provided on the other of the both end faces of the long side cardboard sheet;
4. The end face of the film roll according to claim 1, wherein when the both end faces of the corrugated cardboard sheet are folded inward, the first sheet engaging claws engage with the first sheet engaging grooves. 5. Protective equipment. The corrugated cardboard sheet is formed by adhering paper processed in a wavy shape between front and back paper,
Both ends of the long side corrugated cardboard sheet are folded inward, and the outward paper is cut so that the inward paper is exposed. The end face protector of the film roll of any one of 4. The end surface protector of the film roll of any one of Claims 1-5 is arrange | positioned at the both end surfaces of a film roll,
The film roll packaging body, wherein the protruding portion is inserted into a hollow portion of the core of the film roll, and the film roll is fixed in a vertical direction or a horizontal direction in this state and stored in a cardboard box.