JP3115366U - Film holder - Google Patents

Abstract

The present invention provides a film holder that is easy to configure and inexpensive to manufacture, that is rotatable with respect to a paper tube, and that does not reduce holding force.
In a film holder that is fitted into both ends of a paper tube of a roll-shaped film and an operator grasps the roll-shaped film and pulls out the roll-shaped film, on one side on a cylindrical body 1 provided with a flange 2 at one end, The cylindrical body 1 is provided with a telescopic part 3 having a constant width that can be recessed inside the cylindrical body 1 and that is normally urged so that the diameter of the cylindrical body 1 expands, extending from one end to the other end of the cylindrical body 1. A plurality of rows of protrusions 4 are provided continuously or discontinuously in the circumferential direction on the outer surface of the outer surface of the roll-shaped film to reduce the outer diameter of the cylindrical body 1 by contracting the stretchable part 3 of the cylindrical body 1. The paper tube is fitted into one end of the paper tube, and the paper tube of the roll film is pressed from the inside by the force of expanding the diameter of the expansion / contraction part 3 of the cylinder 1.
[Selection] Figure 1

Description

  This device is a roll of a film such as a stretch film that wraps goods on the outer periphery of the paper tube, and is attached to both ends of the paper tube of a so-called roll film, and the operator holds the roll film, The present invention relates to a film holder used when pulling out a film.

  Conventionally, in the distribution stage until a product is displayed at a retail store or the like, these products are used by using a stretch film or the like for protecting the product, preventing dirt, preventing collapse of the accumulated product, etc. Packaging. Specifically, this roll-shaped film is supported by the operator holding the openings at both ends of the paper tube located at the shaft part of the roll-shaped film in which a film such as a stretch film is wound in a roll shape with the left and right hands. Is rotated or stopped, and the wound film is pulled out or tensioned to be wound around the outer periphery of the product.

  At that time, since the operator puts his hands into the openings at both ends of the paper tube and rotates the roll film, the paper tube may injure his hand. Therefore, a film holder is inserted into the openings at both ends of the paper tube so as not to damage the operator's hand.

  As such a film holder, there is a “roll dispenser” of Japanese Patent No. 2957358. In this method, the roll dispenser includes a gripping member and a ring member, and the ring member is attached to the paper tube, and the ring member and the paper tube are rotated on the gripping member gripped by the operator to draw out the film.

Further, in this publication, as a conventional example, the cylindrical member is substantially cylindrical, and cuts parallel to the axial direction are formed at a plurality of locations on the outer periphery, and the outer diameter is larger than the inner diameter of the paper tube in the paper tube insertion direction. The so-called tulip-shaped plastic dispenser is described, and when the cylindrical member of this dispenser is inserted into the end opening of the paper tube, the outer diameter is reduced by elastic deformation. Thus, the cylindrical member is held on the inner peripheral surface of the paper tube by an appropriate frictional force. Further, it is described that the gripping member has a bowl shape and is formed larger than the outer diameter of the paper tube, and the operator can hold the paper tube by grasping the gripping member with both hands. .
Japanese Patent No. 2957358

  However, these former roll dispensers have a complicated structure and are expensive to manufacture, and cannot be easily employed. Further, in the latter dispenser, as described in the above publication, there is a frictional force when rotating relative to the paper tube, so the inner peripheral surface of the paper tube is scraped, and the holding force by the dispenser gradually decreases. There is a problem that the dispenser falls off during the operation.

  Accordingly, the present invention solves the above problems by providing a film holder that is easy to configure, inexpensive to manufacture, and capable of rotating with respect to the paper tube and that does not reduce the holding force.

  The invention of claim 1 is a film holder which is fitted into both ends of a paper tube of a roll-shaped film and an operator grips this to pull out the roll-shaped film, on one side on a cylindrical body provided with a flange at one end. The cylindrical body is provided with a stretchable portion having a constant width that is dentable to the inner side of the cylindrical body from the vicinity of at least one end portion to the other end of the cylindrical body and is normally urged so that the cylindrical body expands in diameter. A plurality of rows of ridges that are continuous or discontinuous in the circumferential direction on the outer surface of the cylinder, shrinking the expansion and contraction part of the cylinder, and reducing the diameter of the other end side of the cylinder to make a roll film paper The film holder was fitted into one end of the tube and pressed against the paper tube of the roll film from the inside by the force of expanding the expansion / contraction part of the cylinder.

  The invention of claim 2 is such that the expansion / contraction part of the cylindrical body extends from one end of the cylindrical body to the other end, and a notch part extending from the outer peripheral edge to the inner peripheral edge of the flange part is provided in the flange part following the expansion / contraction part. Furthermore, the film holder according to claim 1 was obtained. The invention of claim 3 is the above-described invention according to claim 1 or 2, further comprising a cutting portion on one side of the tubular body and extending from one end to the other end of the portion different from the stretchable portion. The film holder described in any one of the above was used.

  The invention according to claim 4 is the film holder according to any one of claims 1 to 3, wherein the expansion and contraction portion of the cylindrical body has a bellows shape. Further, the invention of claim 5 is the film holder according to any one of claims 1 to 4 in which a plurality of stretchable parts of the cylinder are arranged in parallel on a side surface on the cylinder.

  The invention of claim 6 is a film holder that is inserted into both ends of a paper tube of a roll-shaped film and an operator grips this to pull out the roll-shaped film, and has a length slightly longer than the inner peripheral length of the paper tube. When the expansion / contraction part is contracted and formed into a cylindrical shape, a rectangular pattern made of two opposing long sides and two opposing short sides is shorter than the inner peripheral length of the paper tube to be fitted. It is provided in landscape orientation, and three folding lines are provided at equal intervals in the vertical direction of the pattern paper to form an expansion / contraction part. A paste margin is provided on one short side of the pattern paper, and one end when the paper pattern is formed into a cylindrical shape. A substantially circular collar pattern is provided to form the collar part to be attached, and a number of radial cuts are provided from the center of the collar pattern paper to the inner periphery of the annular edge that is substantially the same shape as the collar part. A crease is provided along the inner peripheral edge of the annular edge, and the annular edge It provided with a cutout portion of constant width.

  Then, the three folding lines of the rectangular pattern are folded to form the concave expansion / contraction part, the pattern is rolled into a substantially cylindrical shape, and an adhesive is applied to the adhesive margin to join both ends. Forming a cylindrical body, aligning the expansion and contraction portion of the pattern paper and the notch portion of the collar pattern paper, and abutting the collar pattern paper so as to close the open end surface of the cylindrical body, A film holder was formed by folding a plurality of folding pieces formed by radial cutting into the inner peripheral surface side of the cylindrical body and bringing them into contact with and adhering to the inner peripheral surface of the cylindrical body. Further, the invention of claim 7 is the film holder of claim 6 in which a plurality of rows of protrusions are provided continuously or discontinuously substantially linearly in the longitudinal direction of one surface of the rectangular paper pattern.

  According to each invention of Claims 1 to 5, since the expansion / contraction part urged so as to expand the diameter at all times is provided on the side surface of the cylindrical body, if the expansion / contraction part is contracted and recessed, a film can be easily obtained. The diameter of the other end side of the holder is reduced, and the holder can be easily fitted into both ends of the paper tube of the roll film. In addition, since the expansion / contraction part expands and expands after being fitted into the paper tube, the force presses the inner peripheral surface of the paper tube, and further continues in the circumferential direction on the outer surface of the film holder. Alternatively, the protrusions provided in a plurality of rows in a discontinuous manner can reliably support the paper tube and improve the holding force when the paper tube is gripped by the film holder, and cannot easily come off. In addition, when rotating the film holder, the area that contacts the inner peripheral surface of the paper tube is reduced by supporting the paper tube with multiple rows of protrusions provided in the circumferential direction, so that the frictional resistance can be reduced and smooth. Can be rotated. Furthermore, the film holder of the present invention has a simple structure having a cylindrical body and a collar part at one end thereof, and a standardized cardboard box that accommodates a large number of roll-shaped films if the collar part is thinned. Even if it is fitted to one end of a roll-shaped film, it does not get in the way and can be packaged in a cardboard box, and does not take up space and is convenient for packaging and storage. Therefore, according to this device, it is possible to obtain a film holder that can be easily used with a simple configuration and is inexpensive to manufacture.

  According to the invention of claim 2, the expansion / contraction part of the cylindrical body extends from one end of the cylindrical body to the other end, and the notch part extending from the outer peripheral edge of the flange part to the inner peripheral edge is formed on the flange part following the expansion / contraction part. Since the film holder is provided, the entire diameter of the film holder can be reduced, and the film holder can be more easily fitted into the paper tube. According to a third aspect of the present invention, a cutting portion extending from one end to the other end in the longitudinal direction on one side of the cylindrical body and further to the collar portion is provided at a location different from the expansion and contraction portion. After inserting into the film holder, the opposite end edges of the cutting part are not abutted but shifted, so that the force of expanding the outside of the film holder due to expansion of the expansion / contraction part can be removed, and the film holder due to expansion of the expansion / contraction part When the force to expand the outside of the film is required, the edges of both ends are abutted so that the expansion of the expansion to the outside of the film holder can be continued for a long time. Can be used over a wide range.

  Further, according to the invention of claim 4, since the expansion / contraction part of the cylindrical body has a bellows shape and a plurality of folds of the expansion / contraction part are employed, in each action such as fitting and gripping into a paper tube based on contraction or expansion of the expansion / contraction part It can respond more delicately and has high reliability as a film holder. Furthermore, according to the invention of claim 5, since the plurality of expansion / contraction portions of the cylinder are arranged in parallel in the direction from one end to the other end of the cylinder, the cylinder is arranged in the circumferential direction as compared with one expansion / contraction portion. The film holder can be shrunk evenly, and the stretching force can be evenly distributed. The film holder can securely grip the inside of the paper tube.

  Further, according to the invention of claim 6, each of the pattern papers that form the cylinder and the collar part is prepared in advance, and the film holder is formed by assembling and pasting these paper patterns. Since the pattern paper is used as a material, the film holder can be easily and inexpensively manufactured with a certain strength. In addition, the roll film using this device is usually contained in a cardboard box in units of six. In this packaging box, a paper pattern that forms a cylindrical body and a heel part is put, respectively, and a paste margin of the rectangular paper pattern is used. If you apply adhesive to the edge of the long side and put release paper on them, the user can take out these patterns and fold the expansion / contraction part of the rectangular pattern when unwrapping the film holder. The film holder can be easily assembled by rounding this into a cylindrical shape, sticking the end, folding the collar pattern, and sticking each folded tongue to the end of the cylinder. it can. Therefore, the cardboard box can be easily accommodated together with a large number of roll-shaped films, either in an assembled state or in the form of a paper pattern that forms a collar with the cylinder before assembly.

  In addition, since the film holder of the present invention is provided with an expansion / contraction portion that is always urged so as to expand the diameter on the side surface of the cylindrical body, if the expansion / contraction portion is contracted and recessed, the entire film holder can be easily removed. The diameter becomes small and can be easily fitted into both ends of the paper tube of the roll film. Further, after the insertion into the paper tube, the expansion / contraction part expands and expands in diameter, so the force presses the inner peripheral surface of the paper tube, and the paper tube is securely supported by the film holder. The holding force when gripping the tube can be improved and it cannot be easily removed. In addition, since the film holder is made of cardboard, it has elasticity, and even when it is fitted into a paper tube of a roll-like film, it has little frictional resistance with the inner peripheral surface of the paper tube and can be smoothly rotated in the paper tube. According to a seventh aspect of the present invention, a plurality of continuous or discontinuous protrusions are provided in the circumferential direction of the cylindrical body of the film holder of the sixth aspect, and when the film holder is put into the paper tube, the paper tube These circumferential ridges hit the inner circumference of the sheet, and the contact area is surely small, the frictional resistance is small, and the film holder can be rotated more smoothly in the paper tube.

  A flange is provided at one end and reaches one end of the cylindrical body from one end to the other end on the cylindrical body. The cylindrical body can be recessed and normally expanded to be urged so that the cylindrical body expands in diameter. A stretchable portion having a certain width is provided, and is cut out from the outer peripheral edge to the inner peripheral edge of the collar portion following the elastic portion with substantially the same width as the elastic portion, and is discontinuous in the circumferential direction on the outer surface of the cylindrical body. Multiple rows of ridges were provided.

  Then, the expansion / contraction part of the cylindrical body is contracted to reduce the diameter of the cylindrical body and fitted into one end of the paper tube of the roll film, and the roll is expanded by a force that expands and expands the expansion / contraction part of the cylindrical body. The paper tube of the film-like film was pressed from the inside, the paper tube of the roll-like film was supported from the inside by the protrusions of the cylindrical body, and the film holder was held rotatably on the roll-like film.

Embodiment 1 of the present invention will be described below with reference to the drawings.
1 and 2 show a film holder A according to Embodiment 1 of the present invention. The film holder A of the present invention is composed of a cylindrical body 1 made of resin, and is provided with a collar 2 at one end thereof, on one side of the cylinder 1 from one end to the other end of the cylinder 1. The expansion / contraction part 3 which can be dented inside the cylinder 1 and is normally urged so as to expand the diameter of the cylinder 1 is provided. The stretchable part 3 has a shape in which a certain width of one side surface of the cylindrical body 1 is folded in half inside the cylindrical body 1.

  A notch 2a extending from the outer peripheral edge to the inner peripheral edge of the flange 2 is provided in the flange 2 following one end of the expansion / contraction part 3 with a width substantially the same as the width of the expansion / contraction part 3. Further, four protrusions 4 having a constant length are provided on the outer surface of the cylindrical body 1 in the circumferential direction (see FIG. 2), and such protrusions are spaced apart in the axial direction. Five rows are provided (see FIG. 1). Further, ribs are formed by these protrusions 4. Further, a cutting portion 5 is provided on the cylindrical body 1 at a position substantially opposite to the position where the expansion / contraction portion 3 is provided, from one end to the other end of the cylindrical body 1 and further to the flange portion 2.

Then, the procedure which uses the film holder A of this Example 1 is demonstrated.
First, two film holders A are prepared, and the expansion / contraction portions 3 of the film holders A are folded inside the cylindrical body 1, and the opposite end edges 2b and 2b of the notch portion 2a of the flange portion 2 are opposed to each other. 6 and the opposite end edges 5a, 5a of the cutting part 5 provided in the direction from one end to the other end are shifted so that they overlap each other by a certain width, so that the diameter of the entire cylinder 1 is reduced. As shown in FIG. 2, two film holders A are respectively fitted into both ends of the paper tube D of the roll-shaped film C, and the hooks 2 are locked to the edge of the paper tube D and installed respectively (however, FIG. 6 shows only one end of the paper tube D).

  When gripping each film holder A installed in both ends of the paper tube D of the roll-shaped film C, the positions of both end edges 5a and 5a of the cutting part 5 fitted in the paper tube in a state of overlapping the above-mentioned constant width are set. , Return to the position facing each other and match. As a result, the force that presses each film holder A outwardly as the stretchable part 3 folded inside the film holder A tries to extend acts strongly on the inner peripheral surface of the paper tube D, and this force is applied to each film holder. The film holder A is supported by the paper tube D by acting on the protrusions 4 (ribs) provided on the outer peripheral surface of A.

  The operator holds the roll film C by holding the two film holders A in the paper tube D in such a state with the left and right hands, respectively. Further, when the film is pulled out, each of these film holders A is supported on the paper tube D by a plurality of rows of protrusions 4 provided in the inner peripheral direction of the cylinder 1, so that an operator can use this film holder. The roll-shaped film C and the paper tube D easily rotate while holding A.

  In addition, when the operator holds each film holder A with his / her left and right hands, the telescopic part 3 and the inner circumference of the paper tube D which are recessed inside each film holder A fitted in both ends of the paper tube D are provided. If a finger is inserted between the film holder A and the expansion / contraction part 3 is pulled toward the axis of the film holder A, the force pressing the inner peripheral surface of the paper tube D of the film holder A is weakened, and the film holder A Becomes floating from the inner peripheral surface of the paper tube D, and the roll film C becomes easy to rotate. Further, when the operator holds each film holder A with his / her left and right hands, he / she puts his / her finger on the side of the expansion / contraction part 3 recessed inside each film holder A fitted in both ends of the paper tube D. When the hand is put into the cylinder 1, the hand is fixed by the stretchable part 3, and the film holder A can be easily rotated with respect to the paper tube D.

  Moreover, in this Example 1, when the cutting part 5 is provided on the cylinder 1 and the film holder A is fitted to the paper tube D, the cutting end part can be overlapped and shifted, Only when the cutting part 5 can be attached, the elastic part 3 works only when the force to press the film holder A outward is required to extend. The force which presses the film holder A by the expansion-contraction part 3 outside can be maintained for a long time.

Next, a second embodiment of the present invention will be described with reference to FIGS.
Here, only the configuration different from the film holder A of the first embodiment will be described. In the film holder B of the second embodiment, the expansion / contraction part 6 is provided only from the middle of the outer periphery of the cylindrical body 7 to the other end where the flange part 8 is not provided. 7 are arranged side by side at equal intervals in the circumferential direction of the cylindrical body 7.

  Moreover, each protrusion 9 (rib) is provided in the substantially cyclic | annular form across the said three expansion-contraction parts 6, and as shown in FIG. 5, the content of each protrusion 9 (rib) is solid. Provided.

Then, the procedure which uses the film holder B of this Example 2 is demonstrated.
The telescopic portions 6 provided only on the other end side of the cylindrical body 7 of the film holder B are contracted to reduce the diameter of the other end side of the cylindrical body 7 so that both ends of the paper tube D of the roll film C are reduced. It fits in, the hook part 8 is latched to the edge of each paper tube D, and each is installed.

  Thereafter, the force that the film holder B expands and presses outward as the contracted expansion / contraction part 6 of the film holder B expands acts on the inner peripheral surface of the paper tube D, and this force is applied to the outer peripheral surface of the film holder B. The film holder B supports the paper tube D. The operator holds the roll film C by holding the two film holders B in the paper tube D in such a state with the left and right hands, respectively.

Next, a third embodiment of the present invention will be described with reference to FIGS.
This Example 3 shows a procedure for manufacturing a film holder A ′ having substantially the same structure except that the film holder A of Example 1 and the cutting part 5 are not provided. As shown in FIG. 7, the length is slightly longer than the circumferential length (substantially the same as the inner circumferential length of the paper tube D) of the cylindrical body 1 of the film holder A ′ (see FIG. 1) as a finished product. When the expansion / contraction part 3 is contracted in a shape, the two opposing long sides 11a having a length shorter than the inner peripheral length of the paper tube D to be fitted, and the length from one end of the cylindrical body 1 to the other end A rectangular pattern 11 having two short sides 11b facing each other and having substantially the same length is provided in a horizontally long shape.

  Two folding lines 11d are provided at equal intervals in the vertical direction in contact with one short side 11b of the pattern 11, and an adhesive margin 11c having a constant width is provided on the other short side 11b of the pattern 11 through a fold. Four rows of protrusions 11e are provided by pressing in a discontinuous manner in a substantially straight line in the longitudinal direction of the surface of the pattern 11. In addition, an adhesive is applied to the adhesive margin 11c, and a release paper is attached thereon (not shown). Further, a predetermined width of adhesive is applied along the long side 11a on the back side of the pattern paper 11, and an adhesive margin 11f is provided, and release paper is attached thereon (not shown).

  Further, as shown in FIG. 8, an annular collar template 12 having an outer periphery substantially the same size as the collar 2 is provided separately. A large number of radial cuts 12b are provided at equal intervals from the center of the collar pattern 12 to the inner periphery of the annular edge 12a having the same shape as the collar 2, and the inner edge of the annular edge 12a of the collar pattern 12 is provided. A crease 12c is provided along the circular edge 12a, and a fan-shaped notch 12d is provided on the annular edge 12a.

  The two folding lines 11d of the paper pattern 11 are folded to form the stretchable part 3, the paper pattern 11 is rounded into a substantially cylindrical shape, the glue margin 11c of one short side 11b is woven by a crease, and the release paper is peeled off. Then, this is overlaid on one piece of the stretchable part 3 which is the other short side 11b, and these are bonded together to form the cylinder 1 having the V-shaped stretchable part 2 on one side. Further, the release paper on the adhesive on the long side 11a of the pattern 11 is peeled off, and the position of the fan-shaped notch 12d of the stretchable pattern 3 and the collar pattern 12 is aligned to open the cylindrical body 1. The collar pattern paper 12 is applied so as to close one end surface, and a large number of folding pieces 12e formed by the radial cuts 12b of the collar pattern paper 12 are folded toward the inner peripheral surface side of the cylindrical body 1 to form the cylinder. The back surface of each of the folded pieces 12e is joined to the adhesive portion where the release paper is peeled off while being brought into contact with the inner peripheral surface of the body 1. In this way, a film holder A ′ can be formed as shown in FIG.

  In Example 1 or 3, the film holder A is made of resin, or the film holder A ′ is made of pattern paper. However, the material of the film holders A and A ′ is not limited to resin or paper. . Moreover, although the notch part 2a of the same width as the expansion-contraction part 3 was provided in the collar part 2, the width | variety of this notch part 2a may be an appropriate width | variety. In this case, when the film holder A is fitted into both ends of the paper tube D of the roll film C, the expansion / contraction part 3 is folded inside the cylinder 1 and the both edges 2b and 2b of the notch of the collar part 2 are substantially in contact with each other. Thus, the diameter of the entire cylinder 1 is reduced.

  In the first embodiment, the cutting part 5 is provided on the cylindrical body 1 at a position substantially opposite to the position where the expansion / contraction part 3 is provided. The position where the cutting part 5 is provided on the cylindrical body 1 is as follows. The position is not limited to the position substantially opposite to the position of the stretchable part 3, and may be anywhere on the cylinder 1 other than the stretchable part 3. Further, when the cutting part 5 is linear, when the film holder A is fitted into both ends of the paper tube D of the roll-shaped film C and used, both end edges 5a and 5a of the cutting part 5 are brought into contact with each other. If the operator holds the film holder A and rotates the roll film C, the end edges 5a and 5a may be misaligned. Therefore, for example, as shown in FIG. 10, if the both end edges 5 a, 5 a of the cutting part 5 are provided with irregularities and these opposing irregularities are fitted and joined, the operator can attach the film holder A. Even if the roll-shaped film C is held, there is no fear that the cut portion 5 is unbonded, and it is easy to use. Furthermore, the cutting part 5 may not be provided on the cylinder 1 in some cases.

  Furthermore, in order to maintain the force which presses the film holder A by the expansion-contraction part 3 outside for a long period of time, instead of this cutting part 5, as shown in FIG. The thickness of both ends in the circumferential direction sandwiching the expansion / contraction part 3 of the cylindrical body 1 is increased (thickness part 3a), and the force for expanding the diameter of the film holder A in the vicinity of both end parts 3 with increased thickness is increased. The thickness of the film holder A is reduced as the distance from the expansion / contraction part 3 decreases, and the force of expanding the film holder A at the portion (thickness thin part 3b) substantially opposite to the vicinity of the expansion / contraction part 3 is reduced. The film holder A has a difference in the force of expanding the diameter, and a part of the strong force of expanding the diameter is released in the direction of the thin wall thickness. It is also possible not to go to the inner peripheral surface of.

  Moreover, in the said Example 2, although the bellows-shaped thing is used as the expansion-contraction part 6, as shown in FIG. 12, this bellows-like expansion-contraction part 6 is the end which does not have the collar part 8 of the cylinder 7. As shown in FIG. It can also be set as the expansion-contraction part 10 which became wide as it reached the edge. In this case, compared to the second embodiment, the other end side of the cylindrical body 7 that does not have the flange portion 8 can be made smaller in diameter, so that it can be easily fitted into the paper tube. Furthermore, in Example 3 described above, four rows of protrusions 11e are provided by pressing in a substantially linear discontinuous manner in the longitudinal direction of the surface of the paper pattern 11, but the protrusions 11e may not be provided. Since the material used to assemble the film holder from this pattern is paper, the cylinder cross-section does not become a perfect circle even if it is rolled up into a cylinder. Is placed in the paper tube of the roll-shaped film, the entire outer surface of the cylindrical body is not in close contact with the inner periphery of the paper tube, and even if the protrusion 11e is not provided, the tube can be easily rotated. Further, in the third embodiment, since the stretchable part 3 is provided at the end of one short side 11b of the rectangular pattern 11, the two folding lines 11d are provided at the corresponding part, and the end of the other short side 11b is provided. The adhesive margin 11c is provided through the fold, and both end portions thereof are joined to form the stretchable portion 3. However, when the stretchable portion 3 is provided at the center of the pattern paper 11, the three folding lines 11d must be provided. Don't be.

It is a perspective view of the film holder of Example 1 of this device. It is a side view of the film holder of Example 1 of this device. It is a perspective view of the film holder of Example 2 of this device. It is a front view of the film holder of Example 2 of this device. It is explanatory drawing of the solid rib of the film holder of Example 2 of this invention. It is a partial cross section figure of the state which installed the film holder of Example 1 of this invention in the end of the paper tube of a roll-shaped film. It is a top view of the paper pattern which forms the film holder of Example 3 of this invention. It is a top view of the collar part paper pattern which forms the collar part of the film holder of Example 3 of this invention. It is an assembly perspective view of the film holder of Example 3 of this device. It is a perspective view of the other film holder of Example 1 of this device. It is a side view of the other film holder of Example 1 of this invention. It is a front view of the other film holder of Example 2 of this invention.

Explanation of symbols

A film holder A 'film holder B film holder 1 cylinder 2 collar 3 stretchable part 4 ridge 5 cutting part 6 stretchable part 7 cylinder 8 collar 9 ridge 11 pattern paper 11a long side 11b short side 11c glue allowance 12 collar Part paper 12a Annular edge 12b Notch 12c Fold 12d Fan-shaped notch 12e Folding piece

Claims (7)

In a film holder that fits into both ends of a roll-shaped paper tube and an operator grips this and pulls out the roll-shaped film,
At one end of the cylinder with a collar at one end, it can be recessed inside the cylinder from the vicinity of at least one end of the cylinder to the other end so that the cylinder usually expands in diameter. A stretched portion having a constant width is provided, and a plurality of rows of protrusions are provided continuously or discontinuously in the circumferential direction on the outer surface of the cylinder, and the other extension of the cylinder is contracted by contracting the stretchable part of the cylinder. The diameter of the end portion side is reduced and fitted into one end of the paper tube of the roll film, and the paper tube of the roll film is pressed from the inside by the force of expanding the diameter of the expansion / contraction part of the cylinder. , Film holder.   The expansion / contraction part of the cylindrical body is provided with a notch extending from one end of the cylindrical body to the other end, and a flange part following the expansion / contraction part from an outer peripheral edge to an inner peripheral edge of the flange part, The film holder according to claim 1.   Either of the above-mentioned 1 or 2 provided on the above-mentioned cylinder, and provided with a cutting part which extends from one end of one side to the other end, and further to a collar part other than said expansion-contraction part. The film holder described in 1.   The film holder according to any one of claims 1 to 3, wherein the expansion / contraction part of the cylindrical body has a bellows shape.   The film holder according to any one of claims 1 to 4, wherein a plurality of stretchable portions of the cylindrical body are arranged in parallel on a side surface of the cylindrical body. In a film holder that fits into both ends of a roll-shaped paper tube and an operator grips this and pulls out the roll-shaped film,
Two opposing long sides, which are longer than the inner peripheral length of the paper tube and are shorter than the inner peripheral length of the paper tube to be fitted when formed into a cylindrical shape and contracted to expand and contract. A rectangular paper pattern consisting of two opposing short sides is provided horizontally, three folding lines are provided at equal intervals in the vertical direction of the paper pattern, and an adhesive margin is provided at the edge of one short side of the paper pattern ,
A substantially circular collar pattern is provided to form a collar part to be attached to one end when the pattern paper is formed into a cylindrical shape, and reaches from the center of the collar pattern paper to the inner peripheral edge of the annular edge having the same shape as the collar part. Provide a large number of radial cuts, provide a crease along the inner peripheral edge of the annular edge of the collar pattern, provide a notch of a certain width on the annular edge,
Fold each fold line of the rectangular pattern paper to form the concave stretchable part, roll the pattern paper into a substantially cylindrical shape, apply adhesive to the glue margin, and join both ends to form a cylinder The expansion part and the notch part of the collar part pattern paper are aligned to contact the collar part pattern paper so as to close the open end surface of the cylindrical body, and is formed by radial cutting of the collar part pattern paper. A film holder, wherein a plurality of folding pieces are folded to the inner peripheral surface side of the cylindrical body and are brought into contact with and bonded to the inner peripheral surface of the cylindrical body.   The film holder according to claim 6, wherein a plurality of rows of ridges are provided continuously or discontinuously in a substantially straight line in the longitudinal direction of one surface of the rectangular pattern.