Film cutter

Abstract

To provide a film cutter that is easy to grip and has good workability when cutting a wrap film. [Solution] The film cutter 1 has a cutter body 2 consisting of a pair of long, plate-shaped gripping pieces 6, 6, and a cutting blade 3 and a spacer 5, which are arranged between the pair of gripping pieces 6, 6, are attached to one end 6a (one end 2a of the cutter body 2) and the other end 6b (the other end 2b of the cutter body 2) of the gripping pieces 6 using screws 8a, 8b and nuts 9a, 9b, respectively. In addition, a guide member 7 is attached to the side surface 6c (the outer surface 2c of the cutter body 2) of one end 6a of the gripping piece 6 using the screw 8a and nut 9a.

Description

[Technical Field]

[0001] The present invention relates to a film cutter for cutting a film used for packaging food (hereinafter referred to as a wrap film), and particularly to a film cutter that provides good operability when cutting a wrap film. [Background technology]

[0002] Generally, foods such as fish and meat are often sold in trays made of synthetic resin foam, wrapped in plastic wrap. In such cases, the plastic wrap must be peeled off to remove the food from the tray. Cutting a portion of the plastic wrap with a blade can facilitate this process. However, if a knife or scissors is used to cut the plastic wrap, the worker may accidentally touch the cutting edge of the knife or scissors, potentially resulting in injury.

[0003] To address this issue, for example, Patent Document 1 discloses a device called a "wrap film cutter" that relates to a blade used to cut open wrap film used to package foods such as fish and meat. The device disclosed in Patent Document 1 is characterized in that an upper guide and a lower guide are provided on one side of the handle so that they open at the top and bottom, and a cutting blade is provided at the base of these guides so that it is parallel to them. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 2-102175 Summary of the Invention [Problem to be solved by the invention]

[0005] The device disclosed in Patent Document 1 has the problem that it is difficult to hold because it is necessary to hold the handle between the thumb and the pads of the other fingers. Also, because the positional relationship of the upper and lower guides to the cutting blade cannot be changed, the handle must be kept in a position so that the cutting blade always forms a specified angle with respect to the food container, which is an issue that makes it difficult to use.

[0006] The present invention has been made in response to the above-mentioned conventional circumstances, and has as its object to provide a film cutter that is easy to grip and provides good operability when cutting wrap film. [Means for solving the problem]

[0007] In order to achieve the above object, the film cutter of the first invention comprises a long cutter body constituting a gripping portion, and a cutting blade and a guide member attached to one end of the cutter body, wherein a portion of the cutting blade protrudes from the cutter body, and the guide member is made of a long member and has a base end attached in a state where it can rotate relative to one end of the cutter body.

[0008] The second invention is characterized in that, in the first invention, the cutting blade is disk-shaped with a through hole in the center and is screwed to one end of the cutter body using a screw whose shank is loosely inserted into the through hole.

[0009] The third invention is characterized in that, in the first or second invention, the cutter body is composed of a pair of long, plate-shaped gripping pieces, the cutting blade is installed between the pair of gripping pieces, and the guide member is installed on the outer surface of the cutter body.

[0010] A fourth invention is characterized in that in the third invention, the cutting blade is placed between a pair of gripping pieces in a state where it is sandwiched between a pair of cutting blade holders. [Effects of the Invention]

[0011] In the first invention, the long cutter body forms the grip, allowing the cutter body to be easily gripped by holding it in one's hand. Furthermore, by contacting the side of the guide member with the side of a food packaging container or the like, the position of the cutter body is stabilized, allowing the inclination of the cutter body relative to the food packaging container to be maintained constant. This makes it easier to cut plastic wrap. Furthermore, by rotating the guide member so that the longitudinal direction of the guide member and the longitudinal direction of the cutter body are parallel, the overall device becomes compact, making it easier to carry and store. In addition, even if the inclination of the cutter body is changed, the contact area of ​​the side surface of the guide member with the side surface of the food packaging container, etc. can be adjusted by rotating the guide member so that it does not become smaller. That is, in the first invention, even if the inclination of the cutter body is changed, the contact area of ​​the side surface of the guide member described above can be prevented from becoming smaller by rotating the guide member, thereby stabilizing the posture of the cutter body. In this way, the first invention is excellent in operability when cutting wrap film because it is possible to prevent a decrease in the function of the guide member.

[0012] In the second invention, loosening the screw allows the cutting blade to move in the in-plane direction (perpendicular to the screw shank) within the range of the difference between the inner diameter of the cutting blade insertion hole and the outer diameter of the screw shank. Therefore, moving the cutting blade in the in-plane direction changes the amount by which the cutting blade protrudes from the cutter body, thereby changing the thickness of the object that can be cut by the cutting blade. In other words, the second invention is designed so that the amount by which the cutting blade protrudes from the cutter body can be adjusted depending on the thickness of the object to be cut. Therefore, according to the second invention, the cutting blade can be made to protrude from the cutter body by a length appropriate for cutting only the object, which greatly reduces the possibility of an operator coming into contact with the cutting blade and being injured.

[0013] Furthermore, in the second invention, for example, when cutting wrap film while holding the cutter body in the right hand, by rotating the guide member by a predetermined angle, it becomes possible to hold the cutter body in the left hand in the same way and perform the same operation. In other words, in the second invention, wrap film can be cut whether the cutter body is held in the left or right hand, which makes the work easier than in the first invention.

[0014] According to the third invention, in addition to the effects of the first or second invention, there is an effect that the cutter body is made lighter.

[0015] According to the fourth invention, the pair of cutting blade holders act to prevent out-of-plane deformation of the cutting blade, and therefore, in addition to the effect of the third invention, an effect is achieved in that the cutting blade is less likely to be damaged. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a perspective view showing an example of the appearance of a film cutter according to an embodiment of the present invention; [Figure 2] 1(a) to 1(e) are external views of the gripping piece, cutting blade, cutting blade holder, spacer, and guide member, 1(f) is a view of the film cutter shown in FIG. 1 as seen in the X direction, and 1(g) is a view showing the state in which the guide member in FIG. 1 is rotated. [Figure 3] 10(a) to 10(c) are diagrams showing the state of the cutting blade and the cutting blade holder installed on the gripping piece. [Figure 4] 1. (a) is a diagram showing the state in which the film cutter shown in FIG. 1 is used, and (b) and (c) are diagrams showing the state as seen from above. [Figure 5] FIG. 1(a) is a diagram showing the state of the guide member and cutting blade when cutting the wrap film, and FIG. 1(b) is an enlarged view of a part of the guide member in FIG. [Figure 6] 4(a) and 4(b) are views in which the inclination of the cutter body and the orientation of the guide member are changed from those in FIG. 4(a). DETAILED DESCRIPTION OF THE INVENTION [Example]

[0017] As shown in Figure 1, a film cutter 1 according to an embodiment of the present invention has a cutter body 2 made up of a pair of long, plate-shaped gripping pieces 6, 6. As such, the cutter body 2 of the film cutter 1 has a lightweight structure. Furthermore, the long cutter body 2 of the film cutter 1 forms the gripping portion, and can be held in the hand, making it easy to hold in a stable state. Furthermore, a cutting blade 3 is attached to one end 6a of the gripping piece 6 (one end 2a of the cutter body 2) using a screw 8a and a nut 9a, and a spacer 5 is attached to the other end 6b of the gripping piece 6 (the other end 2b of the cutter body 2) using a screw 8b and a nut 9b. Also, a guide member 7 is attached to the side surface 6c (outer surface 2c of the cutter body 2) of the one end 6a of the gripping piece 6 using a screw 8a and a nut 9a.

[0018] As shown in Figure 2(a), the gripping piece 6 has an insertion hole 6d for the screw 8a at one end 6a and an insertion hole 6e for the screw 8b at the other end 6b, and the one end 6a is semicircular with the insertion hole 6d at its center. The cutting blade 3, cutting blade holder 4, and spacer 5 are all disk-shaped as shown in Figures 2(b) to 2(d). Insertion holes 3a and 4a for a screw 8a are provided at the center of the cutting blade 3 and cutting blade holder 4, respectively, and an insertion hole 5a for a screw 8b is provided at the center of the spacer 5. The radius of the cutting blade 3 is longer than the radius of the cutting blade holder 4, and the radius of the cutting blade holder 4 is approximately equal to the radius of curvature of one semicircular end 6a of the gripping piece 6. The diameter of the spacer 5 is longer than the width of the gripping piece 6, and its thickness is approximately equal to the thickness of the cutting blade 3 plus the thickness of two cutting blade holders 4. Furthermore, as shown in FIG. 2(e), the guide member 7 is made of an elongated member with a distal end 7a that is arc-shaped, and a base end 7b that is provided with an insertion hole 7c for the screw 8a.

[0019] As shown in Figure 2(f), the cutting blade 3 is sandwiched between a pair of cutting blade holders 4, 4 and is placed between a pair of gripping pieces 6, 6. In this case, the pair of cutting blade holders 4, 4 act to prevent out-of-plane deformation of the cutting blade 3, so that the cutting blade 3 in the film cutter 1 is less likely to be damaged. The cutting blade 3, the pair of cutting blade holders 4, 4, and the guide member 7 are screwed to one end 6a of the gripping piece 6 using a screw 8a and a nut 9a whose shafts are connected to the insertion holes 3a, 4a, and 7a. Furthermore, the spacer 5 installed between the pair of gripping pieces 6, 6 is screwed to the other end 6b of the gripping piece 6 using a screw 8b and a nut 9b whose shafts are inserted into the insertion hole 5a. With this structure, in the film cutter 1, by rotating the nut 9a to loosen the screw 8a, the tip 7a of the guide member 7 can rotate around the shaft of the screw 8a. Therefore, as shown in FIG. 2(g), when the guide member 7 is rotated so that the longitudinal direction of the guide member 7 and the longitudinal direction of the cutter main body 2 are parallel, the film cutter 1 as a whole becomes compact. This makes the film cutter 1 easy to carry and store. Note that even when the guide member 7 is rotated 180 degrees from the state shown in FIG. 2(g), the longitudinal direction of the guide member 7 and the longitudinal direction of the cutter main body 2 become parallel, and the film cutter 1 as a whole becomes compact.

[0020] As described above, the radius of the cutting blade 3 is longer than the radius of the cutting blade holder 4 and the radius of curvature of one end 6a of the gripping piece 6, so a portion of the cutting blade 3 protrudes from the cutter body 2 as shown in Figure 2(f). Here, the amount of protrusion of the cutting blade 3 from the cutter body 2 will be explained using Figures 3(a) to 3(c). Note that while Figure 3(a) shows the cutting blade 3 and the cutting blade holder 4 attached to one end 6a of the gripping piece 6, the cutting blade holder 4 and the gripping piece 6, which are located on the nearer side of the page than the cutting blade 3, are not shown in the figure for the sake of explaining the positional relationship of the cutting blade 3 with respect to the cutter body 2 and the cutting blade holder 4.

[0021] When the screw 8a, whose shaft is inserted into the insertion hole 6d of the gripping piece 6, is tightened to the nut 9a, the cutting blade 3 and the cutting blade holder 4 are fixed immovably relative to the gripping piece 6, with the centers of the insertion holes 3a and 4a aligned with the center of the insertion hole 6d, as shown in Figure 3(a) (the amount of protrusion of the cutting blade 3 from the end face 6f of the gripping piece 6 at this time is L). As already described, the inner diameter of the insertion hole 3a of the cutting blade 3 is larger than the inner diameter of the insertion hole 4a of the cutting blade holder 4 and the inner diameter of the insertion hole 6d of the gripping piece 6. That is, the shank of the screw 8a is loosely inserted into the insertion hole 3a of the cutting blade 3. Therefore, when the nut 9a is rotated to loosen the screw 8a, the cutting blade 3 can move in the in-plane direction (a direction perpendicular to the shank of the screw 8a) within the range of the difference between the inner diameter of the insertion hole 3a of the cutting blade 3 and the outer diameter of the shank of the screw 8a (the inner diameter of the insertion hole 4a of the cutting blade holder 4 or the inner diameter of the insertion hole 6d of the gripping piece 6). Therefore, when the cutting blade 3 is moved in the in-plane direction to the state shown in FIG. 3(b), the amount of protrusion of the cutting blade 3 from the end face 6f of the gripping piece 6 becomes L1 (>L). On the other hand, when the cutting blade 3 is moved from the state shown in FIG. 3(a) in the opposite direction to that in FIG. 3(b) to the state shown in FIG. 3(c), the protrusion amount of the cutting blade 3 from the end face 6f of the gripping piece 6 becomes L2 ( <L)となる。

[0022] In this way, the film cutter 1 is structured so that when the nut 9a is rotated to loosen the screw 8a and move the cutting blade 3 in the in-plane direction, the amount by which the cutting blade 3 protrudes from the end face 6f of the gripping piece 6 changes, changing the thickness of the wrap film that can be cut by the cutting blade 3. After adjusting the amount of protrusion from the end face 6f of the gripping piece 6, the nut 9a is rotated and the screw 8a is tightened again, so that the cutting blade 3 is fixed to the gripping piece 6 so that it cannot move.

[0023] When cutting wrap film with the cutting blade 3 while the end surface 6f of the gripping piece 6 is facing the food packaging container, the thickness of the wrap film that can be cut is determined by the amount that the cutting blade 3 protrudes from the end surface 6f of the gripping piece 6. As described above, the film cutter 1 is configured so that the amount that the cutting blade 3 protrudes from the end surface 6f of the gripping piece 6 (i.e., the amount that the cutting blade 3 protrudes from the cutter body 2) can be adjusted according to the thickness of the wrap film to be cut. Therefore, with the film cutter 1, by allowing the cutting blade 3 to protrude from the cutter body 2 by a length that is appropriate for cutting only the wrap film, the possibility of an operator coming into contact with the cutting blade 3 and being injured can be greatly reduced.

[0024] Here, a method for cutting wrap film using the film cutter 1 will be described with reference to Figures 4 to 6. In Figures 4 and 6, the outline of the food packaging container is shown by a solid line, and the wrap film is not shown. As shown in Figures 4(a) and 4(b), the film cutter 1 is placed above a food packaging container 10 that has been placed so that its top surface 10a is horizontal, and with the end surfaces 6f of the gripping pieces 6 facing the food packaging container 10 and the tips 7a of the guide members 7 protruding downwardly beyond the cutter body 2, one end 6a of the gripping pieces 6 is pressed against the top surface 10a of the food packaging container 10 while the side surfaces 7d of the guide members 7 are in contact with the side surfaces 10b of the food packaging container 10. This causes part of the cutting blade 3 to bite into the wrap film that forms the top surface 10a of the food packaging container 10. When the cutter body 2 is then moved in a manner that pulls it toward the other end 2b, the wrap film is cut by the cutting blade 3. In this way, in the film cutter 1, the posture of the cutter body 2 is stabilized by contacting the side surface 7d of the guide member 7 with the side surface 10b of the food packaging container 10, so that the wrap film can be easily cut while maintaining a constant inclination α of the cutter body 2 relative to the top surface 10a of the food packaging container 10.

[0025] If the food packaging container 10 is rotated 180 degrees in a horizontal plane from the state shown in Figure 4(b) and the guide member 7 is rotated counterclockwise by an angle twice β in Figure 4(a), and then the cutter body 2 is held in the left hand and the surface opposite to the end surface 6f of the gripping piece 6 constituting the cutter body 2 is faced toward the food packaging container 10, the wrap film can be cut while the side surface 7d of the guide member 7 is in contact with the side surface 10b of the food packaging container 10 as shown in Figure 4(c). In this way, the film cutter 1 is easy to use because it can cut the wrap film whether the cutter body 2 is held in either the left or right hand.

[0026] Next, the range in which the side surface 7d of the guide member 7 comes into contact with the side surface 10b of the food packaging container 10 during the operation of cutting the wrap film will be described with reference to Figure 5. Figure 5(a) is a diagram showing the state of the guide member 7 and cutting blade 3 during cutting of the wrap film. Note that in Figure 5(a), of the tray and wrap film that make up the food packaging container 10, the top surface of the tray (hereinafter referred to as tray top surface 11) is shown by a solid line, and the top surface of the wrap film (hereinafter referred to as film top surface 12) is shown by a dashed line. Furthermore, hatching indicates the area in which the side surface 7d of the guide member 7 comes into contact with the side surface 10b of the food packaging container 10. When the amount of protrusion of the cutting blade 3 from the end face 6f of the gripping piece 6 is adjusted to be equal to the thickness of the wrap film, as shown in Figure 5(a), when the wrap film is cut by the cutting blade 3, the surface of the cutting blade 3 abuts against the upper surface 11 of the tray, and the semicircular portion that forms part of one end 6a of the gripping piece 6 comes into contact with the upper surface 12 of the film.

[0027] The thickness of the food packaging container 10 and the length of the guide member 7 are several centimeters, while the thickness of the wrap film is 1 mm or less. Therefore, in FIG. 5(a), the thickness of the wrap film can be ignored and the semicircular portion constituting part of one end 6a of the gripping piece 6 is considered to be in contact with the tray upper surface 11. The area S of the hatched portion (the portion where the side surface 7d of the guide member 7 contacts the side surface 10b of the food packaging container 10) can be considered to be approximately equal to the sum of the area S1 of the trapezoid ABCD shown in FIG. 5(b) and the area S2 of the semicircle. In FIG. 5(b), point P is the center of rotation of the guide member 7 and corresponds to the center of curvature of the semicircular end 6a of the gripping piece 6. Point Q is the center of the semicircle at the tip 7a of the guide member 7. Point E is the foot of the perpendicular line drawn from point A to line segment CD, and point F is the foot of the perpendicular line drawn from point P to line segment AD. Furthermore, points A and D are the intersections of the outline of the guide member 7 and the tray upper surface 11, and point G is the intersection of line segments AD and PQ. Line segments AE and BC are both perpendicular to line segment PQ, point H is the midpoint of line segment AE, and point Q is the midpoint of line segment BC.

[0028] Here, let angle FPG be θ, the length of line segment PQ be a, the width of guide member 7 be 2b, and the length of line segment PF be c. Therefore, the upper base (length of line segment AB), lower base (length of line segment CD), and height (length of line segment BC) of trapezoid ABCD are expressed by the following equations (1) to (3). Therefore, the area S1 of trapezoid ABCD is expressed by equation (4). Note that angle FPG corresponds to the angle between the longitudinal direction of guide member 7 and the vertical direction when tray top surface 11 is parallel to the horizontal. Furthermore, the area S2 of a semicircle with line segment BC as its diameter is expressed by equation (5). Therefore, the area S of the hatched portion (the portion where side surface 7d of guide member 7 contacts side surface 10b of food packaging container 10) is expressed as the sum of area S1 of trapezoid ABCD and area S2 of the semicircle, as expressed by equation (6). Therefore, by differentiating both sides of equation (6) with respect to θ, the derivative of area S can be obtained as equation (7).

[0029]

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[0030]

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[0031]

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[0032]

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[0035]

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[0036] When the angle θ is greater than or equal to 0 and less than π / 2, the right-hand side of equation (7) is 0 or negative. That is, the area S of the hatched portion expressed in equation (6) is maximum when the angle θ is 0, and monotonically decreases when the angle θ is any other value. Furthermore, when the longitudinal direction of the gripping pieces 6 forms an angle β (>π / 2) with the longitudinal direction of the guide member 7 as shown in FIG. 4(a), the angle θ that the longitudinal direction of the guide member 7 makes with the vertical direction is expressed as in equation (8) using the inclination α of the cutter body 2 with respect to the upper surface 10a (tray upper surface 11) of the food packaging container 10 and the angle β.

[0037]

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[0038] This indicates that as α increases, θ decreases. For example, when the inclination α of the cutter body 2 relative to the upper surface 10a (tray upper surface 11) of the food packaging container 10 decreases from the state shown in FIG. 4(a), the angle θ increases as shown in FIG. 6(a). Also, as mentioned above, the area S of the hatched portion expressed by equation (6) monotonically decreases with the angle θ. Therefore, the area S in this case is smaller than that shown in FIG. 4(a), and the function of the guide member 7 to stabilize the posture of the cutter body 2 is reduced. However, in the film cutter 1, the area S can be made the same as in the state shown in Figure 4(a) by reducing the angle β between the longitudinal direction of the gripping pieces 6 and the longitudinal direction of the guide member 7 so that the angle θ between the longitudinal direction of the guide member 7 and the vertical direction becomes equal to the original angle. In this case, the function of the guide member 7 to stabilize the posture of the cutter body 2 is not reduced. In Figure 6(a), as the inclination α of the cutter body 2 relative to the upper surface 10a (tray upper surface 11) of the food packaging container 10 increases, the angle θ (>0) between the longitudinal direction of the guide member 7 and the vertical direction decreases. However, in this case, the area S of the hatched portion expressed by equation (6) becomes larger than that shown in Figure 4(a), so there is no problem of a decrease in the function of the guide member 7 to stabilize the posture of the cutter body 2.

[0039] Figure 6(b) corresponds to the case in Figure 4(a) where the angle β between the longitudinal direction of the gripping piece 6 and the longitudinal direction of the guide member 7 is smaller than π / 2. In this case, the angle θ between the longitudinal direction of the guide member 7 and the vertical direction is expressed as in equation (9) using the inclination α of the cutter body 2 with respect to the upper surface 10a of the food packaging container 10 (tray upper surface 11) and the angle β.

[0040]

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[0041] This indicates that as α increases, θ also increases. For example, when the inclination α of the cutter body 2 with respect to the upper surface 10a (tray upper surface 11) of the food packaging container 10 increases from the state shown in Figure 6(b), the angle θ also increases. As a result, the area S of the hatched portion expressed by equation (6) becomes smaller than that shown in Figure 6(b), and the function of the guide member 7 to stabilize the posture of the cutter body 2 is reduced. However, in the film cutter 1, the area S can be made the same as that shown in Figure 6(b) by increasing the angle β between the longitudinal direction of the gripping pieces 6 and the longitudinal direction of the guide member 7 so that the angle θ between the longitudinal direction of the guide member 7 and the vertical direction becomes equal to the original angle. In this case, the function of the guide member 7 to stabilize the posture of the cutter body 2 is not reduced. In addition, in Figure 6(b), when the inclination α of the cutter body 2 relative to the upper surface 10a (tray upper surface 11) of the food packaging container 10 becomes smaller, the angle θ (>0) between the longitudinal direction of the guide member 7 and the vertical direction becomes smaller. However, as a result, the area S of the hatched portion expressed by equation (6) also becomes larger than in the case shown in Figure 6(b), so there is no problem that the function of the guide member 7 to stabilize the posture of the cutter body 2 is reduced.

[0042] In this way, with film cutter 1, even when the inclination of cutter body 2 relative to food packaging container 10 is changed, by rotating guide member 7, it is possible to adjust so that the contact area of ​​side surface 7d of guide member 7 with side surface 10b of food packaging container 10 does not become smaller. In other words, with film cutter 1, even when the inclination of cutter body 2 relative to food packaging container 10 is changed, by rotating guide member 7, the function of guide member 7 to stabilize the attitude of cutter body 2 is not reduced, resulting in excellent operability when cutting wrap film.

[0043] In the film cutter 1 of the present invention, it is assumed that the cutting blade holder 4, spacer 5, gripping piece 6, and guide member 7 are made of plastic, but these components are not limited to plastic and may be made of metal such as iron or stainless steel. However, if the surfaces of the cutting blade holder 4, gripping piece 6, and guide member 7 that come into contact with the wrap film are mirror-finished, a large frictional force will be generated between these components and the wrap film, making it difficult to move the film cutter 1 by pulling the cutter body 2 toward the other end 2b. For this reason, it is desirable to make the surfaces of the above components that come into contact with the wrap film rough by providing them with minute irregularities, for example. [Industrial Applicability]

[0044] The film cutter of the present invention can be used to cut wrap films used for packaging food. [Explanation of symbols]

[0045] 1...Film cutter 2...Cutter body 2a...One end 2b...Other end 2c...Outer surface 3...Cutting blade 3a...Insertion hole 4...Cutting blade holder 4a...Insertion hole 5...Spacer 5a...Insertion hole 6...Gripping piece 6a...One end 6b...Other end 6c...Side surface 6d, 6e...Insertion hole 6f...End surface 7...Guide member 7a...Tip 7b...Base end 7c...Insertion hole 7d...Side surface 8a, 8b...Screw 9a, 9b...Nut 10...Food packaging container 10a...Top surface 10b...Side surface 11...Tray top surface 12...Top surface of film α...Tilt β...Angle θ...Angle L, L1, L2...Protrusion amount

Claims

1. a long cutter body constituting a gripping portion; a cutting blade and a guide member attached to one end of the cutter body, The cutting blade is disk-shaped and partially protrudes from the cutter body, The film cutter is characterized in that the guide member is made of an elongated member, and its base end is attached in a rotatable state relative to the one end of the cutter body so that its center of rotation coincides with the center of the circle of the cutting blade.

2. A film cutter as described in Claim 1, characterized in that the guide member has a non-mirror-finished, minutely uneven surface.

3. The cutter body is composed of a pair of long, plate-shaped gripping pieces, The cutting blade is disposed between the pair of gripping pieces, 3. The film cutter according to claim 1, wherein the guide member is disposed on an outer surface of the cutter body.

4. 4. The film cutter according to claim 3, wherein the cutting blade is disposed between the pair of gripping pieces while being sandwiched between a pair of cutting blade holders.

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