JP2015217974A - Container with cylindrical film, and cylindrical film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container with a cylindrical film that can strike a balance between the securement of easiness of separation starting work and the good outward appearance, and to provide the cylindrical film for use in the same.SOLUTION: A container with a cylindrical film is mounted with the cylindrical film 1 substantially comprising the uniaxial stretching heat shrinkable film assuming a circumferential direction as an extending direction. The cylindrical film 1 has a main covering part 10 for covering the side circumference surface of the container, and an inward covering part 11 extending from one end of the main covering part 10 toward the inside of the container. The cylindrical film 1 is provided with a separating piece 21 defined from the other portion by a pair of left and right separating lines 20. Each separating line 20 has an obliquely shaped part inclined in the inside and outside direction going to the shaft of the inward covering part 11 on a portion positioned in at least the inward covering part 11. The obliquely shaped part comprises one obliquely shaped cut line 23, and one end 23a of the obliquely shaped cut line 23 is spaced apart from an end edge 1a of the cylindrical film 1 by a predetermined distance.

Description

  The present invention relates to a container with a cylindrical film in which a cylindrical film made of a heat-shrinkable film is attached to the container, and a cylindrical film used for the container with a cylindrical film.

  As this kind of container with a cylindrical film, there exists a form with which the cap seal with a top plate was mounted | worn at the opening part of the container (for example, refer patent document 1 below). This cap seal with a top plate is comprised from the top plate which obstruct | occludes the opening part of the opening of a container, and the cylindrical film which coat | covers from the outer peripheral surface of the opening part of a container to the upper surface peripheral part of a top plate. The tubular film is substantially formed from a uniaxially stretched heat-shrinkable film into a tubular shape, and the stretching direction is the circumferential direction, and the container mouth is sealed with a top plate by thermally shrinking the tubular film. can do.

  In the tubular film, a pair of left and right perforations are formed along the axial direction for opening. The part between the two perforations is a separating piece for opening. At the time of opening, the pair of perforations is broken by pulling the upper end of the separating piece and pulling it downward. Separate from the part. In addition, it is easy to open by picking a knob from the upper edge of the tubular film and picking the knob, or by providing a cut line at the upper edge of the perforation to pick the upper edge of the separating piece. Some configurations make it easier.

  However, the upper end portion of the cylindrical film is located at the peripheral edge of the top surface of the top plate and is a portion where the amount of shrinkage is larger than the portion covering the outer peripheral surface of the mouth portion. Therefore, in the configuration in which the knob piece is provided in a protruding manner, the knob piece is often thermally contracted and warped, and it is easy to pick, but the appearance is not necessarily good. The same applies to the case where a cut line is provided at the upper end portion of the perforation, and the upper end portion of the separation piece is contracted to open the cut line in a V shape to the left and right, and the upper end portion of the separation piece is warped by thermal contraction. Therefore, it is difficult to obtain a good appearance.

Utility Service 1-91756

  Therefore, the present invention has been made in view of the above-described conventional problems, and provides a container with a cylindrical film capable of ensuring both ease of starting separation work and good appearance, and a cylindrical film used therein. The task is to do.

  The present invention has been made to solve the above problems, and a container with a tubular film according to the present invention is a container and a heat that is attached to the container and is substantially uniaxially stretched with the circumferential direction as the stretching direction. A tubular film-equipped container comprising a tubular film made of a shrinkable film, wherein the tubular film is disposed on the inside of the container from one end of the main covering portion and the main covering portion covering the side peripheral surface of the container. An inwardly extending covering portion, and the tubular film is provided with a separating piece separated from other portions by a pair of left and right separating lines, and each separating line is at least inwardly facing the covering portion. Each of the inclined portions is inclined with respect to the inward / outward direction toward the axis of the inward covering portion, and the inclined portion is inclined with respect to the inward / outward direction toward the axis of the inward covering portion. Or a plurality of oblique cut lines, and both of the oblique portions Side end close to the edge of the inner tubular film is characterized in that characterized in that the end edge of the cylindrical film are spaced apart a predetermined distance.

  Incidentally, the inclination angle of the oblique portion with respect to the inner and outer directions (radial direction) toward the axis (center axis) of the inward covering portion and the inclination angle of the oblique cut line with respect to the inner and outer directions toward the axis of the inward covering portion are: They may coincide with each other or may be different from each other. That is, when the inclination angle of the oblique portion with respect to the inward / outward direction toward the axis of the inward covering portion is θ1, and when the inclination angle of the oblique cut line with respect to the inward / outward direction toward the axis of the inward covering portion is θ2, θ1 = θ2 Or θ1 ≠ θ2.

  When the oblique portion is composed of one oblique cut line, the inclination angle of the oblique portion, that is, the inclination angle of the oblique cut line is θ1 = θ2. In this case, θ1 and θ2 are collectively referred to as θ. In this case, the end of the oblique portion is the end of the oblique cut line. Further, when the oblique portion is composed of a plurality of oblique cut lines, the oblique portion as a whole may be inclined with respect to the inward / outward direction toward the axis of the inward covering portion. It is only necessary that the imaginary line connecting the respective centers of the oblique cut lines is inclined with respect to the inward / outward direction toward the axis of the inward covering portion. When the oblique portion is composed of a plurality of oblique cut lines, the inclination angle of the imaginary line connecting the respective centers of the plurality of oblique cut lines becomes the inclination angle (θ1) of the oblique portion, and the oblique portion The inclination angle (θ2) of each oblique cut line may be the same or different from the inclination angle (θ1). Further, when the oblique portion is composed of a plurality of oblique cut lines, the lengths of the plurality of oblique cut lines may be the same or different, and the inclination angle (θ2) is also mutually different. May be different.

  In addition, the entire circumference of the tubular film is divided into two areas of large and small by forming a pair of separation lines, and the area between the separation lines is divided into two of the longer and shorter ones of the entire circumference. However, the cut piece in the present invention means the shorter one. Further, the inward covering portion extends from one end of the main covering portion toward the inside of the container, but is generally bent inward at a substantially right angle to the main covering portion, and has an angle of at least 45 degrees. In this case, it is preferable to bend and extend toward the inside of the container.

  The heat-shrinkable film is a so-called shrink film, and is a film substantially uniaxially stretched so that the circumferential direction becomes the stretching direction. The heat shrinkable film in which the circumferential direction is the stretching direction and is substantially uniaxially stretched means a film having a large difference between the shrinkage rate in the circumferential direction and the shrinkage rate in the axial direction, and does not shrink at all in the axial direction. It does not mean only a film having a so-called shrinkage rate of zero. Specifically, for example, a film in which the difference between the shrinkage rate in the circumferential direction and the shrinkage rate in the axial direction at 90 ° C. for 10 seconds (warm water treatment) is 50% or more, and preferably, the shrinkage rate in the axial direction is -5 to 10% film.

  Also, in general, a long heat in which the short direction is the TD direction (transverse direction) and the long direction is the MD direction (flow direction, Machine Direction) so that the short direction is the circumferential direction. Both sides of the shrinkable film are bonded together to form a long cylindrical shape, which is cut into predetermined lengths to form a cylindrical film. On the other hand, the long heat-shrinkable film having the longitudinal direction as the TD direction and the short direction as the MD direction is cut every predetermined length so that the longitudinal direction of the film becomes the circumferential direction when wound. A rectangular flat sheet-shaped heat-shrinkable film is formed, the flat heat-shrinkable film is wound around a container so that its TD direction is the circumferential direction, and both ends are bonded together to form a cylindrical shape. Sometimes.

  In the cylindrical film-equipped container having the above-described configuration, at least the part of the separation line located in the inward covering portion is configured as a slanted portion, and the slanted portion is composed of one or more slanted cut lines. Therefore, even if the end of the oblique portion is separated from the edge of the tubular film by a predetermined distance, the portion between the end of the oblique cut line and the edge of the tubular film can be easily broken. You can begin to cut off the pieces. In addition, since the oblique portion of the separation line does not reach the edge of the tubular film, the edge of the tubular film does not open into a V shape by thermal contraction at the positions on both sides of the separation piece. The end of the cut piece does not warp. The inward covering portion of the tubular film is a portion having a large amount of shrinkage, but the oblique cut line is inclined at a predetermined angle with respect to the inner and outer directions toward the axis of the inward covering portion. Does not open greatly due to heat shrinkage. That is, since the inward covering portion is a portion having a large amount of shrinkage, if the incision line extends along the inward / outward direction toward the axis of the inward covering portion, the incision line corresponds to the extending direction of the tubular film. Therefore, a large opening is caused by thermal contraction, and a large cut line is conspicuous. On the other hand, since the oblique cut line is inclined at a predetermined angle with respect to the inner and outer directions toward the axis of the inward covering portion, the oblique cut line is not conspicuous without being greatly opened by heat shrinkage.

  In particular, it is preferable that the oblique portions of each separation line are inclined so as to be separated from each other toward the edge of the tubular film. The oblique portions of each separation line may be inclined toward each other toward the edge of the tubular film, but if they are inclined toward each other toward the edge of the tubular film, The width of the edge of the separation piece becomes wider and it becomes easier to pick, and the separation operation can be started more easily.

  Furthermore, it is preferable that the inclination angle of the oblique cut line with respect to the inward / outward direction toward the axis of the inward covering portion is not less than 45 degrees and less than 90 degrees. When the inclination angle of the oblique cut line is set to 45 degrees or more, the oblique cut line is more difficult to open and less noticeable than when the inclination angle is less than 45. The inclination angle “+” is the side where the oblique cut lines in the left and right cut lines are away from each other.

  Further, the tubular film according to the present invention is made of a substantially uniaxially stretched heat-shrinkable film having a circumferential direction as a stretching direction, and is provided with a separating piece partitioned from other portions by a pair of left and right separating lines. Each separating line has an oblique portion inclined with respect to the axial direction of the tubular film in the vicinity of the end portion, and the oblique portion is in the axial direction of the tubular film. The end of the inclined portion closer to the end of the tubular film is spaced a predetermined distance from the end of the tubular film. It is characterized by that.

  As described above, since the oblique portion is formed in the inward covering portion which is a portion having a large amount of shrinkage, the separation line is not greatly opened in the inward covering portion, and the appearance is good. In addition, since the slanted portion is formed in the inward covering portion, which is a portion having a large amount of contraction, the separation start operation is easy.

The perspective view which shows the principal part of the container with a cylindrical film in one Embodiment of this invention. Sectional drawing of the principal part of the container with the said cylindrical film. The principal part top view of the container with the said cylindrical film. It is a tubular film before heat shrinkage used for the container with the tubular film, (a) is a front view including a partially broken line showing a state of being folded into a flat state, (b) is its FIG. The principal part perspective view which shows one manufacturing process of the container with the said cylindrical film. The front view containing the partially broken line which shows the thing of the cylindrical film before the heat shrink used for the container with a cylindrical film in other embodiment of this invention, and the state folded by the flat state. The front view containing the partially broken line which shows the thing of the cylindrical film before the heat shrink used for the container with a cylindrical film in other embodiment of this invention, and the state folded by the flat state. The front view containing the partially broken line which shows the thing of the cylindrical film before the heat shrink used for the container with a cylindrical film in other embodiment of this invention, and the state folded by the flat state. The perspective view which shows the container with a cylindrical film with which the cylindrical film was mounted | worn. The top view which shows the principal part of the container with a cylindrical film in other embodiment of this invention. The principal part enlarged view which is the cylindrical film before the heat shrink used for the container with the said cylindrical film, Comprising: The thing of the state folded by the flat state. (A) And (b) is a top view which shows the principal part of the container with a cylindrical film in other embodiment of this invention. (A) And (b) is the cylindrical film before the heat shrink used for the container with a cylindrical film in another embodiment of the present invention, and shows the main part front showing the state folded in a flat state Figure.

  Hereinafter, a container with a tubular film according to an embodiment of the present invention and a tubular film used therein will be described with reference to FIGS. The upper part of the container with a cylindrical film in this embodiment is shown in a perspective view in FIG. The container with a cylindrical film includes a cylindrical film 1 made of a heat-shrinkable film and a container.

(Container with cylindrical film)
As shown in FIGS. 2 and 5, the container includes a bottomed cylindrical container body 2 that opens upward, and a lid 3 that closes the upper surface opening of the container body 2. Yes. The container main body 2 includes a disk-shaped bottom portion (not shown) and a cylindrical body portion having a constant diameter extending upward from the periphery of the bottom portion, and has a circular opening at the upper end of the body portion. . The bottom portion and the body portion may be formed integrally, or may be formed separately and joined.

  The lid 3 includes a plate-like top plate portion 4 for closing the opening at the upper end of the container body 2 and a cylindrical skirt wall portion 5 that hangs downward from the periphery of the top plate portion 4. Yes. 1, 3, and 5, the top plate portion 4 of the lid 3 is shown with a large number of dots. Similarly in FIGS. 10 and 12 described later, the top plate portion 4 of the lid 3 is shown with a large number of dots. The shape of the top plate portion 4 corresponds to the shape of the opening portion of the container body 2. In this embodiment, since the opening portion of the container body 2 is circular, the top plate portion 4 is also circular correspondingly. . Similarly, the skirt wall 5 is also cylindrical. The skirt wall portion 5 is formed by vertically bending downward from the periphery of the top plate portion 4, and thus the top plate portion 4 and the skirt wall portion 5 have an integrated structure composed of one member. It is good also as a separate structure which consists of a mutually different member. As shown in FIG. 2, such a lid 3 is placed on the container body 2 so that the skirt wall 5 covers the upper part of the container body 2 from the outside, and the top plate 4 is formed on the upper end surface of the container body 2. The lower surface comes into contact. Therefore, the outer diameter of the container body 2 and the inner diameter of the skirt wall portion 5 of the lid body 3 are in a corresponding relationship. In this embodiment, since the skirt wall 5 of the lid 3 is configured to cover the outer side of the upper portion of the container body 2, the side circumferential surface of the container is the outer circumferential surface of the body portion of the container body 2. And the outer peripheral surface of the skirt wall 5 of the lid 3.

  The tubular film 1 covers the upper part of the container. Specifically, the tubular film 1 covers the upper part of the container body 2 and the entire skirt wall portion 5 of the lid body 3, and surrounds the top plate portion 4 of the lid body 3 to cover the upper peripheral edge portion thereof. Yes. That is, the tubular film 1 extends from the upper end of the main covering portion 10 to the inner side of the container (to the center side) at a substantially right angle from the upper end of the side peripheral surface of the container. And an annular inward covering portion 11 that covers the peripheral edge of the upper surface of the top plate portion 4 of the lid 3. As described above, since the skirt wall portion 5 of the lid body 3 is configured to cover the outside of the container body 2, the main covering portion 10 of the tubular film 1 covers the entire skirt wall portion 5 of the lid body 3. In addition, the upper predetermined region of the body portion of the container main body 2 located below the skirt wall portion 5 is covered. Therefore, the main covering portion 10 of the tubular film 1 is composed of an upper covering region 10 a that covers the skirt wall portion 5 of the lid 3 and a lower covering region 10 b that covers the upper portion of the body portion of the container body 2. The lower covering region 10b has a smaller diameter than the upper covering region 10a corresponding to the thickness of the skirt wall 5 of the lid 3, and the skirt wall portion is between the upper covering region 10a and the lower covering region 10b. A step portion 10c corresponding to a thickness of 5 is formed. Further, the length of the lower covering region 10b in the vertical direction (axial direction) is longer than the length of the upper covering region 10a in the vertical direction (axial direction). On the other hand, the inward covering portion 11 of the tubular film 1 is in a state of being bent inward with respect to the main covering portion 10 by heat shrinkage, and covers the upper peripheral edge portion of the top plate portion 4 of the lid 3. This is a portion having a larger shrinkage than the main covering portion 10.

  The tubular film 1 is formed with a pair of left and right opening separating lines 20 that are separated by a predetermined distance in the circumferential direction. The separation line 20 is formed over substantially the entire length from the upper end to the lower end of the tubular film 1. The pair of left and right separating lines 20 divides the band-shaped part between the two parts and the other part, and this band-shaped part is a separating piece 21 for opening. The severing line 20 is a main severing part 22 occupying most of the entire length thereof, and a diagonal part that is located above the main severing part 22 and constitutes a predetermined region at the upper end of the severing line 20. It consists of and. The oblique portion is inclined with respect to the inward / outward direction (radial direction) toward the axis (center axis) of the inward covering portion 11. In the present embodiment, the oblique portion is aligned with the axis of the inward covering portion 11. It is composed of a single oblique cut line 23 that is inclined with respect to the inner and outer directions.

  The main separating portion 22 is formed over the entire length of the main covering portion 10 of the tubular film 1 and reaches the inward covering portion 11. The main separation portion 22 is formed along the axial direction of the tubular film 1 (the axial direction of the container), and is constituted by perforations in the present embodiment. The oblique cut line 23 is located in the inward covering portion 11. The oblique cut line 23 is inclined at a predetermined angle with respect to the inner and outer directions toward the axis of the inward covering portion 11. Since the inward covering portion 11 of the tubular film 1 is bent inward at a substantially right angle toward the center 4a of the top plate portion 4, the axis of the inward covering portion 11 is the center 4a of the top plate portion 4, The inner and outer direction toward the axis of the inward covering portion 11 is the radial direction of the top plate portion 4 of the lid 3. In FIG. 3, a line portion connecting the upper end of the main separation portion 22 of the separation line 20 and the center 4 a of the top plate portion 4 of the lid 3 is indicated by a one-dot chain line. Is inward and outward directions in the inward covering portion 11 of the tubular film 1. In the inward covering portion 11, the main separation portion 22 of the separation line 20 is along the inside / outside direction of the inward covering portion 11 (the radial direction of the top plate portion 4 of the lid 3), but the oblique cut line 23 is Inclined by a predetermined angle with respect to the inner and outer directions of the inward covering portion 11. The inclination angle is indicated by the symbol θ in FIG. The oblique cut lines 23 constitute a predetermined region at the upper end of each separation line 20, and the pair of left and right oblique cut lines 23 are inclined in directions away from each other toward the upper edge 1 a of the tubular film 1. The inclination angle θ of the oblique cut line 23 is usually 10 degrees or more and less than 90 degrees, preferably 30 degrees or more and less than 90 degrees, and more preferably 45 degrees or more and less than 90 degrees. The “+” side of the inclination angle θ is a side where the pair of left and right oblique cut lines 23 are separated from each other.

  The oblique cut line 23 does not reach the upper edge 1a of the tubular film 1 (the edge on the separation start side of the separation piece 21). One end 23a of the oblique cut line 23 is an end closer to the upper end edge 1a of the tubular film 1, and the other end 23b is an end closer to the main separation portion 22 of the separation line 20, but the oblique cut Since the line 23 does not reach the upper end edge 1 a of the tubular film 1, the one end 23 a of the oblique cut line 23 is at a position separated from the upper end edge 1 a of the tubular film 1 by a predetermined distance. The separation distance is variously set according to the material, thickness, shrinkage amount, etc. of the tubular film 1, and is preferably 1 to 2 mm. The separation distance is slightly different before and after the shrinkage of the tubular film 1, but in any case, the oblique cut line 23 does not reach the upper end edge 1a of the tubular film 1, and the oblique cut. One end 23 a of the line 23 is separated from the upper end edge 1 a of the tubular film 1.

(Tubular film)
Next, the cylindrical film 1 in a state before heat shrink will be described. The unshrinked tubular film 1 is in a state of being folded into a flat shape as shown in FIG. In FIG. 4A, the direction indicated by symbol A is the axial direction, and the direction indicated by symbol B is the circumferential direction. Since the tubular film 1 is in a state of being flatly folded, when the surface shown in FIG. 4A is the front surface, the back surface has the same shape as the front surface. Further, the side edges 24 are folds along the axial direction, and when opened from a flat state, the both side edges 24 have a symmetrical shape with the fold as the center. In addition, the position which was a crease | fold (side edge 24) is shown with the dashed-two dotted line in FIG.1, FIG3 and FIG.5. Moreover, the cylindrical film 1 has a cylindrical shape by overlapping both end portions of the film, and the overlapping portion is indicated by reference numeral 25 in FIG. 4A, and in FIG. 1 and FIG. Is also denoted by reference numeral 25 in the same manner. The position of the overlapping portion 25 is arbitrary, and may be positioned between the pair of separation lines 20 (the separation piece 21), for example. The overlapping portion 25 is formed by fixing both end portions of the film with a solvent or an adhesive.

  The separating line 20 is formed at a position away from the one side edge 24 of the tubular film 1 by a predetermined distance. Since the cylindrical film 1 is in a folded state as described above, when the front is the front and the back is the rear, the separation lines 20 are respectively formed at the same front and rear positions. The separating line 20 is composed of a main separating part 22 along the axial direction and a slanting part located above the main separating part 22, and the slanting part is composed of a single slanting cut line 23. ing. As described above, the tubular film 1 is configured to go around the top surface of the top plate portion 4 of the lid 3 and cover the peripheral edge thereof, and includes the main covering portion 10 and the inward covering portion 11. In FIG. 4A, a two-dot chain line 26 along the circumferential direction is a line that becomes a boundary between the main covering portion 10 and the inward covering portion 11. The oblique cut line 23 is located above the two-dot chain line 26 and is formed in a portion that becomes the inward covering portion 11.

  The oblique cut line 23 is inclined at an inclination angle θ with respect to the axial direction of the tubular film 1. The pair of oblique cut lines 23 are inclined so as to be separated from each other toward the upper side. The oblique cut line 23 does not reach the upper end edge 1 a of the tubular film 1, and one end 23 a of the oblique cut line 23 is separated from the upper end edge 1 a of the tubular film 1 by a predetermined distance. The separation distance along the axial direction of the tubular film 1 is indicated by the symbol D in FIG. 4A, and this separation distance D is at least shorter than the length LS of the oblique cut line 23, preferably 1 ~ 2mm. The main cut-off portion 22 is a single perforation in which cut portions 22a and remaining portions 22b are alternately formed. As shown in detail in FIG. 4B, the cut portion 22a (cut line) is shown. ) And the remaining portion 22b remaining without being cut are alternately formed in the longitudinal direction. The length LC of the cutting part 22a is, for example, 0.5 to 0.7 mm, and the length LR of the remaining part 22b is, for example, 0.5 to 0.7 mm. The length LS of the oblique cut line 23 is longer than the length LC of the cutting part 22a of the main separation part 22, and is, for example, 1 to 10 mm.

  Here, specific examples of the resin film constituting the tubular film 1 include polyolefin-based polymers such as linear low density polyethylene (LLDPE), low density polyethylene (LDPE), high density polyethylene (HDPE), and polypropylene (PP). Polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polystyrene (PS), polylactic acid (PLA), polyamide, ethylene vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer Examples thereof include a film made of a vinyl resin such as a polymer (EAA) and polyvinyl chloride. Moreover, the film containing the resin mixture which mixed 2 or more types of these resin can also be used, and the laminated | multilayer film which laminated | stacked 2 or more types of films can also be used. Of these, polyester-based, polyolefin-based, and polystyrene-based films are preferable, and polyester-based films are particularly preferable because they have appropriate shrinkage stress and high transparency. Further, as described above, a substantially uniaxially stretched film that contracts mainly in the circumferential direction is used.

  Although the thickness of the cylindrical film 1 is not specifically limited, It is preferable that it is 8-100 micrometers, More preferably, it is 10-80 micrometers, Most preferably, it is 15-60 micrometers. It is also preferable to use a colored resin film or a resin film on which a printing layer for displaying a trade name, a design, or the like is formed. That is, a so-called shrink label may be used.

  The tubular film 1 having such a configuration is expanded from the flat state, and is temporarily covered with the lid 3 on which the heat-sensitive adhesive is applied to the peripheral edge of the upper surface of the top plate portion 4 to preliminarily form the tubular film 1. Then, the cap seal 30 with the top plate as a preform is formed as shown in FIG. When the tubular film 1 is heat-shrinked, an inward covering portion 11 is formed which covers the upper peripheral portion of the top plate portion 4 of the lid 3 by being bent inward while shrinking the upper portion thereof. 3 and the tubular film 1 are integrated to form a cap seal 30 with a top plate. Then, the formed cap seal 30 with a top plate is placed on the upper part of the container body 2, and the tubular film 1 is further heated and thermally contracted to adhere to the outer peripheral surface of the body part of the container body 2. Instead of forming the cap seal 30 with the top plate, the tubular body 1 may be covered and thermally contracted after the container 3 is covered with the lid 3.

  As described above, the container with a tubular film is formed, but the inward covering portion 11 has a larger shrinkage than the main covering portion 10. Since the oblique cut line 23 is formed in the inward covering portion 11, even if one end 23 a of the oblique cut line 23 is separated from the upper end edge 1 a of the tubular film 1 by a predetermined distance, the oblique cut line 23. It is possible to easily cut the non-cut portion between the one end 23a of the tube and the upper end edge 1a of the tubular film 1 and start the separation piece 21. In addition, since the pair of left and right oblique cut lines 23 are inclined in a direction away from each other toward the one end 23 a side, the width of the upper end portion of the separation piece 21 is wide and easy to be picked, and the upper end edge 1 a of the tubular film 1. Even if the tab is not projecting, the upper end portion of the separating piece 21 can be easily picked and separated.

  Further, since the oblique cut line 23 does not reach the upper edge 1a of the tubular film 1, the upper edge 1a of the tubular film 1 is thermally contracted as in the case where the oblique cut line 23 has reached the upper edge 1a. Therefore, the upper end portion of the separation piece 21 is not warped by heat shrinkage. Further, since the cylindrical film 1 is substantially composed of a uniaxially stretched film with the circumferential direction as the stretching direction, and the oblique cut line 23 is inclined at a predetermined angle with respect to the axial direction of the cylindrical film 1, The oblique cut line 23 is not greatly opened by heat shrinkage, and even if the oblique cut line 23 is formed, the aesthetic appearance is not impaired. Since the inward covering portion 11 is a portion having a large amount of shrinkage, if the incision line extends along the inward / outward direction toward the axis of the inward covering portion 11, the incision line extends in the extending direction of the tubular film 1. Since they are orthogonal to each other, they are greatly opened by thermal contraction, and a large cut line is conspicuous. On the other hand, when the oblique cut line 23 is inclined at a predetermined angle with respect to the inner and outer directions toward the axis of the inward covering portion 11 as in the present embodiment, the cut line is greatly opened due to thermal contraction. In other words, the oblique cut line 23 is not conspicuous and a good aesthetic appearance is obtained. In particular, when the inclination angle θ of the oblique cut line 23 is not less than 45 degrees and less than 90 degrees, the oblique cut line 23 is more difficult to open and less noticeable. In addition, since no knob is protrudingly provided on the upper edge 1a of the tubular film 1 and the oblique cut line 23 is not greatly opened, the film largely warps or swells upward in the inward covering portion 11. Not. Therefore, a container is stabilized when a container with a cylindrical film is piled up and down.

  In the present embodiment, the pair of left and right oblique cut lines 23 are inclined in a direction away from each other toward the one end 23a, but conversely, are inclined in a direction approaching each other toward the one end 23a. Also good. Even in this case, since the oblique cut line 23 is inclined in the inward covering portion 11 where the contraction amount is large, the separating line 20 is not greatly opened in the inward covering portion 11, and the appearance is good. It will be good.

  In addition, the entire oblique cut line 23 is configured to be located in the inward covering portion 11. For example, the upper end of the main covering portion 10 (the main covering portion 10 and the inward covering portion 11 in FIG. The oblique cut line 23 may be formed from the inward covering portion 11 to the main covering portion 10 so as to straddle the boundary line 26), and at least the inward covering portion 11 has one end 23a side of the oblique cut line 23. As long as a part of exists. The inward covering portion 11 is a portion having a large amount of contraction. However, since the oblique cut line 23 is inclined at a predetermined angle with respect to the axis of the inward covering portion 11, the oblique cut line 23 may be greatly opened. It becomes less noticeable and a good aesthetic is obtained.

  Furthermore, although the main separation portion 22 of the pair of left and right separation lines 20 is a single perforation, it may be a double perforation or a form other than a perforation.

  In addition, the lid 3 has the configuration including the skirt wall portion 5, but the configuration may be such that the skirt wall portion 5 is not provided and only the top plate portion 4 is provided. Similarly, the cap seal 30 with the top plate described above may be configured only by the top plate portion 4.

  Further, in a container in which the lid 3 is attached to the container body 2 by screwing or the like, the tubular film 1 is attached so as to cover the container body 2 from the container body 2 to the top surface of the lid 3. The film 1 may be wrapped around and the inward covering portion 11 may be formed. Even in this case, the inward covering portion 11 is a portion having a large amount of contraction, but since the oblique cut line 23 is inclined at a predetermined angle with respect to the axis of the inward cover portion 11, the oblique cut line 23 is large. It is not conspicuous without opening and a good aesthetic appearance is obtained. Moreover, a thin container like a cosmetic compact may be sufficient as a container, and it is good also as a structure provided with the inward coating | coated part 11 on the upper and lower sides of the main coating | coated part 10, respectively. In that case, the upper and lower inward covering portions 11 are each provided with a diagonal cut line 23 (slanted portion) so that the separation piece 21 can be separated from both the upper and lower sides, and can be opened from the upper side, and the lower side can be opened. It is good also as a structure. In this case, both the upper inward covering portion 11 and the lower inward covering portion 11 are locations where the contraction amount is large, but the oblique cut line 23 is predetermined with respect to the axis of the inward covering portion 11. Since it is inclined at an angle, the oblique cut line 23 is not greatly opened, and the oblique cut line 23 is not conspicuous on either the upper surface or the lower surface of the container, and a good aesthetic appearance is obtained.

  Moreover, although the structure which separates the separation piece 21 from the upper side was demonstrated, it is applicable also to the structure which separates from the lower side, and the axial direction of the cylindrical film 1 faces a horizontal direction instead of an up-down direction. It is also applicable when

  Furthermore, as shown in FIG. 6, the main separating portion 22 may be inclined with respect to the axial direction of the tubular film 1. Moreover, the form which has stopped in the middle without being formed to the lower end of the cylindrical film 1 like FIG. For example, the cutting line 20 may be a vertical cutting line, and a horizontal cutting line 40 that extends in the circumferential direction so as to intersect the lower end may be formed over the entire circumference, and is positioned above the horizontal cutting line 40 when opened. The upper part of the tubular film 1 to be removed may be removed, while the lower part of the tubular film 1 positioned below the transverse separating line 40 may be left as it is in the container.

  Further, as shown in FIG. 8, oblique portions may be provided on both the upper side and the lower side of the main separation portion 22. That is, the oblique cut lines 23 as described above may be provided on the upper side and the lower side of the main cut-off portion 22, respectively. In this case, one end 23 a of the lower oblique cut line 23 is separated from the lower end edge 1 b of the tubular film 1 by a predetermined distance. The configuration shown in FIG. 8 is suitable for a thin container such as a cosmetic compact as described above. FIG. 9 shows an example of a state in which the tubular film 1 shown in FIG. 8 is mounted on a thin container. When the tubular film 1 is attached to the container, the upper inward covering portion 11 that bends from the upper end of the main covering portion 10 to the inside of the container, and the lower inward direction that bends from the lower end of the main covering portion 10 to the inside of the container. The upper inward covering portion 11 covers the upper peripheral edge of the container, and the lower inward covering portion 11 covers the lower peripheral edge of the container. If comprised in this way, the separation piece 21 can be separated also from an upper end side at the time of opening, and can also be separated from a lower end side. Further, although both the upper inward covering portion 11 and the lower inward covering portion 11 are portions having a large contraction amount, the oblique cut line 23 is inclined at a predetermined angle with respect to the axis of the inward covering portion 11. Therefore, the oblique cut line 23 is not greatly opened, and the oblique cut line 23 becomes inconspicuous on both the upper surface and the lower surface of the container, and a good aesthetic appearance is obtained.

  In the above embodiment, the oblique portion of the separation line 20 is composed of one oblique cut line 23, but there are various configurations of the oblique portion, for example, as described above with reference to FIGS. A diagonal cut line 50 shorter than the diagonal cut line 23 may be formed between the long diagonal cut line 23 and the upper edge 1 a of the tubular film 1. FIG. 10 is an enlarged plan view of the main part of the container with a cylindrical film, and FIG. 11 is an enlarged front view of the main part of the cylindrical film before heat shrink used in the container with the cylindrical film. There may be one or two short oblique cut lines 50. In this case, the oblique portion of the separation line 20 is composed of a long oblique cut line 23 and a short oblique cut line 50, and one end of the oblique portion is one end of the short oblique cut line 50. Thus, one end of the short oblique cut line 50 is separated from the upper end edge 1a of the tubular film 1 by a predetermined distance.

  Further, the oblique portion of the separation line 20 may be composed of two oblique cut lines 51 having substantially the same length as shown in FIG. 12 (a), or three as shown in FIG. 12 (b). As described above, for example, it may be configured by four oblique cut lines 51. In this case, one end of the oblique portion becomes one end of the oblique cut line 51 closest to the upper end edge 1 a of the tubular film 1 among the plurality of oblique cut lines 51, and is closest to the upper end edge 1 a of the tubular film 1. One end of the oblique cut line 51 is separated from the upper end edge 1 a of the tubular film 1 by a predetermined distance.

  Moreover, you may comprise the oblique part 52 of the separating line 20 from many more oblique cut lines 52a. In the case where the oblique portion 52 of the separating line 20 is constituted by a plurality of oblique cut lines 52a, the oblique portion 52 comprising the plurality of oblique cut lines 52a is inclined at a predetermined angle with respect to the axial direction of the tubular film 1. Will be. For example, as shown in FIG. 13A, each of the plurality of oblique cut lines 52a in the oblique portion 52 is the extending direction of the oblique portion 52 (the longitudinal direction of the oblique portion 52), and the tubular film 1 may be formed along the inclination direction of the inclined portion 52 inclined with respect to the axial direction of the first axis. In this case, the inclination angle of each oblique cut line 52a and the inclination angle of the oblique portion 52 coincide with each other. On the other hand, as shown in FIG. 13B, each of the plurality of cut lines 52 a in the oblique portion 52 may be formed along a direction obliquely shifted from the extending direction of the oblique portion 52. In this case, the inclination angle of each oblique cut line 52a and the inclination angle of the oblique portion 52 do not coincide with each other. When the inclination angle of the oblique portion 52 with respect to the axial direction of the tubular film 1 is θ1, and when the inclination angle of the oblique cut line 52a with respect to the axial direction of the tubular film 1 is θ2, θ1 ≠ θ2. In the case of FIG. 13B, θ1 <θ2 is satisfied, but the reverse is also possible. As described above, when the oblique portion 52 of the separation line 20 is constituted by a plurality of oblique cut lines 52a, the oblique portion 52 only needs to be inclined with respect to the inward / outward direction of the inward covering portion 11 as a whole. . That is, the virtual line 52b connecting the centers of the plurality of oblique cut lines 52a only needs to be inclined with respect to the axial direction of the tubular film 1, and when the virtual line 52b is attached to the container, the virtual line 52b What is necessary is just to incline with respect to the inner / outer direction of the direction coating | coated part 11. FIG. However, even in the case of FIG. 13B, each of the plurality of oblique cut lines 52a in the oblique portion 52 does not extend in the axial direction of the tubular film 1, but the axial line of the tubular film 1. It is necessary to incline at a predetermined angle with respect to the direction, and when mounted on the container, each of the plurality of oblique cut lines 52a is inclined with respect to the inward / outward direction of the inward covering portion 11. Necessary. One end of the oblique portion 52 is one end of the oblique cut line 52a closest to the upper end edge 1a of the tubular film 1 among the plurality of oblique cut lines 52a, and is closest to the upper end edge 1a of the tubular film 1 One end of the oblique cut line 52a is separated from the upper end edge 1a of the tubular film 1 by a predetermined distance.

DESCRIPTION OF SYMBOLS 1 Cylindrical film 1a Upper end edge 1b Lower end edge 2 Container main body 3 Lid body 4 Top plate part 4a Center 5 Skirt wall part 10 Main coating | coated part 10a Upper coating | coated area 10b Lower coating | coated area 10c Step part 11 Inward coating | coated part 20 Disconnection line 21 Cut piece 22 Main cut portion 22a Cut portion 22b Remaining portion 23 Oblique cut line (oblique portion)
23a, one end 23b, the other end 24, side edge 25, overlapping portion 26, line 30 that forms the boundary between the main covering portion and the inward covering portion, top cap cap 40, cross-cut line 50, oblique cut line 51, oblique cut line 52, oblique form Part 52a Oblique cut line 52b Virtual line

Claims (4)

A cylindrical film-equipped container comprising a container and a cylindrical film made of a substantially uniaxially stretched heat-shrinkable film that is attached to the container and has a circumferential direction as a stretching direction,
The tubular film has a main covering portion that covers the side peripheral surface of the container, and an inward covering portion that extends from one end of the main covering portion toward the inside of the container,
The tubular film is provided with a separation piece partitioned from other parts by a pair of left and right separation lines,
Each separating line has a slanted portion inclined at least in the inward and outward directions toward the axis of the inward covering portion at a portion located in the inward covering portion,
The oblique portion is composed of one or a plurality of oblique cut lines inclined with respect to the inward and outward directions toward the axis of the inward covering portion, and close to the edge of the tubular film at both ends of the oblique portion. The container with a tubular film, wherein the side end is spaced a predetermined distance from the edge of the tubular film.   The container with a tubular film according to claim 1, wherein the oblique portions of each separating line are inclined so as to be separated from each other toward the edge of the tubular film.   The container with a cylindrical film according to claim 1 or 2, wherein an inclination angle of the oblique cut line with respect to the inner and outer directions toward the axis of the inward covering portion is 45 degrees or more and less than 90 degrees. It is a cylindrical film comprising a substantially uniaxially stretched heat-shrinkable film with the circumferential direction as the stretching direction, and provided with a separating piece separated from other parts by a pair of left and right separating lines,
Each separation line has an oblique portion inclined with respect to the axial direction of the tubular film in the vicinity of the end portion thereof,
The oblique portion is composed of one or a plurality of oblique cut lines inclined with respect to the axial direction of the tubular film, and the end of the oblique portion close to the edge of the tubular film is A tubular film characterized by being spaced a predetermined distance from an edge of the tubular film.

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