JP4518394B2 - Insulated container - Google Patents

Description

  The present invention relates to an insulated container for containing food.

  Conventionally, various heat-insulating containers have been proposed in which contents such as instant foods such as soup and noodles that are poured and poured with hot water are placed (see, for example, Patent Document 1 and Patent Document 2). These conventional heat insulation containers have a heat insulating container body which is formed in a bottomed cylindrical shape and one of which is an opening, and a lid member which is detachably attached to the opening.

  This type of insulated container is designed to prevent dirt from adhering to the container body (especially the part where people put its mouth) from the hygiene aspect, such as when it is placed in the store as a product containing the contents. From the viewpoint of safety, such as avoiding the situation where it can be opened and easily contaminated with foreign matter, these are covered with a biaxially stretched heat shrink film (shrink film) with the lid member attached to the container body ( Overlap packaging) is performed. The film covers the container body and the lid member by being heat-shrinked after being put over the lid body from the container body.

On the other hand, there is a heat insulating container in which the container main body is covered with an outer package made of a heat insulating sheet to ensure heat insulation. Also in this case, for the same reason as described above, the film is covered and the film is thermally shrunk to cover the container body and the lid member.
Japanese Patent Laid-Open No. 11-11539 Japanese Patent No. 3590311

  The heat insulating container is used to remove the film, open the lid member, and pour hot water into the container body. By the way, if a film is put on the container main body and the lid member, the cost increases accordingly. Therefore, it is desirable to omit such a film if possible. However, some measures are necessary to prevent the container body from becoming dirty and to prevent the lid member from being opened and entering foreign matter.

  Therefore, a sheet body in which a film is laminated on the outside of the heat insulating sheet is used as an exterior body, and the sheet body is covered from the container body to the lid member, and the upper portion of the sheet body is thermally contracted to form the side wall portion and the lid of the container body. It is conceivable to coat the outer peripheral portion of the member.

  However, in the case of using the sheet body as described above, the heat insulating sheet is thicker than the film in order to ensure heat insulating properties, and is heat-shrinkable, so that there is a problem that it is difficult to cut by finger force at the time of opening. .

  Then, in view of the said subject, this invention makes it a subject to provide the heat insulation container which is easy to open, after ensuring a sanitary surface and a safety surface.

The heat insulating container of the present invention includes a bottomed cylindrical container main body, a lid member provided at the opening of the container main body, a peripheral wall exterior portion that sheathes the peripheral wall portion of the container main body, and the peripheral wall exterior portion. An outer cover having an annular cover outer cover that covers the outer periphery of the cover member from above, and the outer cover is formed into a cylindrical shape by laminating a heat-insulating sheet and a heat-shrinkable film on which printing has been performed. The sheet body has an extension part in which a heat-shrinkable film is extended from the upper end edge of the heat insulation sheet, and the extension part is heat-shrinked. Thus, the lid exterior part is formed .

  The exterior body covers the outer periphery of the container main body or the lid member to prevent the opening of the container main body from becoming dirty and ensure a sanitary state, and the lid member is opened to allow foreign matter to enter the container main body. Such a state can be avoided to ensure safety.

  In the heat insulating container having the above-described configuration, the lid exterior portion of the exterior body is obtained by thermally shrinking the heat-shrinkable film, so that the lid exterior portion is attached to the peripheral wall exterior portion with the force of fingers that only cut the heat-shrinkable film. Since the upper part of the lid member is opened by this, the lid member can be opened with respect to the container main body. In addition, since the extension portion is heat-shrinked to form a lid exterior portion, it is not necessary to prepare a packaging film that will be the lid exterior portion and to exteriorize the container body and the lid member. Can be lowered.

According to the heat insulating container of the present invention, in addition to being able to ensure a hygienic and safety by cover armor unit, only fingers from the cover exterior part is formed of a heat-shrinkable film, cutting the heat-shrinkable film It becomes possible to easily separate from the peripheral wall exterior part with the force of. Furthermore, according to the heat insulating container of the present invention, since the lid exterior part is formed by thermally shrinking the extension part, it is not necessary to prepare a special film for packaging, and the cost can be reduced accordingly. It becomes possible.

  Hereinafter, an insulated container according to an embodiment of the present invention will be described with reference to the accompanying drawings. First, the heat insulating container according to the first embodiment will be described with reference to FIGS. 1 to 13. As shown in FIGS. 1 to 3, the heat insulating container A according to the first embodiment includes a bottomed cylindrical container body 1 and a lid member 3 that is detachably attached to the opening 2 on the upper end side of the container body 1. And a synthetic resin exterior body 4 having heat shrinkability. The opening part 2 is a part which puts a mouth in order to eat and drink the food and drink put in the container main body 1.

  The container body 1 is a resin molded product formed by injection molding using polypropylene, high-density polyethylene or the like as a material, and is integrally formed from an inverted conical cylindrical peripheral wall 5 and a bottom wall 6 that closes a lower end opening of the peripheral wall 5. Is formed. The peripheral wall 5 of the container body 1 is formed on an inclined surface having a smaller diameter on the lower end side than on the upper end side.

  More specifically, the peripheral wall 5 of the container body 1 is set to have a cylindrical upper peripheral wall portion 8 that forms the opening 2 and a smaller diameter than the upper peripheral wall portion 8, and is formed below the upper peripheral wall portion 8. The lower peripheral wall portion 9 and an annular connecting portion 7 that connects the lower end portion of the upper peripheral wall portion 8 and the upper end portion of the lower peripheral wall portion 9 are configured.

  As shown in FIG. 2, the upper peripheral wall portion 8 has a cylindrical peripheral wall body portion 10 in which a lower end portion is connected to the outer peripheral edge portion of the connection portion 7, and an inner peripheral edge portion connected to the upper end portion of the peripheral wall main body portion 10. A horizontal annular ring-shaped connecting portion 11, a cylindrical large-diameter portion 12 having a lower end connected to the outer peripheral edge of the annular connecting portion 11, and an outward extension from the upper end portion of the large-diameter portion 12. And the flange portion 13.

  The peripheral wall main body 10 is formed in an inverted conical cylindrical shape so that the outer diameter and the inner diameter become smaller toward the lower end side. As shown in FIG. 3, a plurality of concave strips 10 a and a plurality of convex strips 10 b extending in the axial direction are alternately formed on the outer peripheral surface of the peripheral wall main body portion 10 in the circumferential direction. The surface of the concave strip 10a forms a concave curved surface in the circumferential direction, and the surface of the convex strip 10b forms a convex curved surface in the circumferential direction. Thereby, the outer peripheral surface of the surrounding wall main-body part 10 has comprised the wavy curved surface in which the concave curved surface and the convex curved surface were formed alternately.

  In other words, the cross-section of the ridge 10b has a gentle chevron shape, and the recess 10a is formed by the connecting portion between the ridges 10b. For example, the concave strip 10 a is formed with a predetermined angle (about 7.5 ° in the present embodiment) in the circumferential direction with respect to the central axis of the peripheral wall body 10. Therefore, also about the several protruding item | line 10b, the vertex of adjacent protruding item | line 10b via the recessed item | line 10a is a space | interval of predetermined angle (7.5 degrees in this embodiment) centering on the axis line of the surrounding wall main-body part 10. FIG. In the circumferential direction.

  A reinforcing piece 17 for increasing the radial strength of the container body 1 is suspended from the lower end of the outer periphery of the peripheral wall body 10 according to the present embodiment. The reinforcing pieces 17 are disposed on the outer peripheral surface of the lower peripheral wall portion 9 (lower cylindrical portion 16 described later) with a predetermined interval in the circumferential direction, and both side ends are connected to vertical ribs 15 described later. Yes.

  As described above, the annular connecting portion 11 has an outer peripheral edge portion connected to the upper end portion of the peripheral wall main body portion 10 and is formed in a bowl shape with respect to the peripheral wall main body portion 10. The large-diameter portion 12 has a substantially cylindrical shape, and the lower end portion is connected to the outer peripheral edge portion of the annular connecting portion 11. Thereby, the large diameter part 12, the annular connection part 11, and the surrounding wall main-body part 10 form the level | step difference in the opening part 2 vicinity of the upper surrounding wall part 8 (container main body 1), and the upper surface of the annular connection part 11 is hot water etc. It can be used as a line of sight that serves as a measure of the amount of water poured.

  The flange portion 13 is composed of a horizontal annular top plate portion 13a projecting radially outward and a hanging portion 13b suspended from the outer peripheral edge portion of the top plate portion 13a, and has a substantially L-shaped cross section. There is no. The upper end portion of the large diameter portion 12 is connected to the inner peripheral edge portion of the top plate portion 13 a of the flange portion 13, and the upper surface of the top plate portion 13 a constitutes the upper end surface of the heat insulating container A by this configuration.

  The lower peripheral wall portion 9 protrudes from the lower cylindrical portion 16 whose upper end portion is connected to the upper peripheral wall portion 8 via the connection portion 7 and extends in the vertical direction on the outer peripheral surface of the lower cylindrical portion 16. And a plurality of the vertical ribs 15.

  The lower cylindrical portion 16 is formed in an inverted conical cylindrical shape (a cylindrical shape forming an inverted truncated cone shape) so that the outer diameter and the inner diameter become smaller toward the lower end side. The lower cylindrical portion 16 according to the present embodiment includes a thick cylindrical portion 16a on the upper end opening side connected to the connecting portion 7 and a lower end of the thick cylindrical portion 16a in consideration of the resin flow during molding. And a thin cylindrical portion 16b connected to the portion.

  Since the lower cylindrical portion 16 is connected to the upper peripheral wall portion 8 via the connection portion 7 as described above, the thick-walled cylindrical portion 16a has an amount corresponding to the outer diameter of the upper end portion interposed in the connection portion 7. The upper peripheral wall portion 8 (peripheral wall main body portion 10) has a smaller diameter than the inner diameter of the lower end opening, and is formed in an inverted conical cylindrical shape having a smaller diameter toward the lower end side.

  The thin cylindrical portion 16b has an upper end connected to the lower end of the thick cylindrical portion 16a so as to form a substantially uniform continuous surface with the inner peripheral surface of the thick cylindrical portion 16a. The thickness of the thin cylindrical portion 16b is set to be thinner than the thickness of the thick cylindrical portion 16a, and is set to about 0.2 mm to 0.4 mm in the present embodiment. The thin cylindrical portion 16b is also formed in a substantially inverted conical cylindrical shape so as to have a smaller diameter toward the lower end side, similarly to the thick cylindrical portion 16a.

  The plurality of vertical ribs 15 are arranged radially on the outer peripheral surface of the lower cylindrical portion 16 with the axis of the lower peripheral wall portion 9 as the center. That is, the plurality of vertical ribs 15 are provided radially about the axis of the lower cylindrical portion 16 so as to extend over the thick cylindrical portion 16a and the thin cylindrical portion 16b. The vertical rib 15 according to the present embodiment has an upper end connected to the lower surface of the connection portion 7, and the amount of protrusion gradually decreases from the upper end of the lower cylindrical portion 16 toward the lower end side.

  The vertical rib 15 according to the present embodiment has a protrusion amount in the vicinity of the connection portion between the thick tubular portion 16a and the thin tubular portion 16b of about 1.5 mm to 2 mm based on the outer peripheral surface of the thin tubular portion 16b. The thickness of the portion connected to the thin cylindrical portion 16b is set to about 0.6 to 0.7 mm. Thereby, as for the container main body 1 concerning this embodiment, the outer peripheral surface of the surrounding wall main-body part 10, the front-end | tip of the vertical rib 15, and the outer surface of the bottom wall 6 are formed continuously. When the vertical ribs 15 are set to the above dimensions, the thick cylindrical portion 16a is about 0.3 mm to 0 mm on the assumption that the thick cylindrical portion 16a is thicker than the thin cylindrical portion 16b. It is preferable to set the length of the shaft center to about 1 mm to 10 mm.

  The bottom wall 6 includes a bottom plate portion 6a having a circular shape in plan view, and a bottom connection portion 6b that connects the bottom plate portion 6a to a lower end portion of the thin cylindrical portion 16b (the peripheral wall 5). The bottom plate portion 6a is formed such that a substantially circular region at the center is slightly bulged on the inner side (upper side) of the container body 1. The bottom connecting portion 6b is formed in an annular shape, and one surface constituting the inner surface of the container body 1 forms a concave curved surface, and the other surface constituting the outer surface of the container body 1 forms a convex curved surface. It is formed as follows. The outer peripheral edge of the bottom plate portion 6a is connected to the inner peripheral edge of the bottom connection portion 6b, and the substantially dish-shaped bottom wall 6 is configured together with the bottom plate portion 6a. The outer peripheral edge portion of the bottom connection portion 6b is connected to the lower end portion of the lower cylindrical portion 16 (the peripheral wall 5).

  The lid member 3 is a resin molded product formed by injection molding using polypropylene, high-density polyethylene, or the like as a material, and is formed in a circular shape in plan view. The lid member 3 has an annular fitting formed in a substantially L-shaped cross section from an annular contact portion 3a that contacts the upper surface of the top plate portion 13a and a cylindrical portion 3b that fits inside the large diameter portion 12 of the flange portion 13. It is comprised from the part 19 and the disc part 29 integrally provided in the internal diameter side of the cylindrical part 3b of this annular fitting part 19. As shown in FIG. The annular fitting portion 19 (cylindrical portion 3b) is associated with a diameter with the large diameter portion 12 so as to be elastically fitted into the large diameter portion 12, and the container main body 1 is elastically loaded with the contents. After being put in, it is fitted into the opening 2. Moreover, when pouring hot water into the container main body 1, it resists elasticity and is removed from the opening part 2 with a finger.

  The exterior body 4 is formed from a heat-shrinkable resin sheet, and has a peripheral wall exterior portion 20 that covers the peripheral wall 5 and a lower end of the peripheral wall exterior portion 20 so as to face the peripheral wall 5 of the container body 1. Further, a bottom wall exterior portion 21 extending (folded) toward the inside of the peripheral wall exterior portion 20 and a lid extending from the upper end of the peripheral wall exterior portion 20 to the outer peripheral portion 3A of the lid member 3 It is integrally formed with the exterior part 22. The outer peripheral portion 3 </ b> A of the lid member 3 is a peripheral portion in a region including the outer peripheral edge of the lid member 3.

  As shown in FIG. 4, the lid exterior portion 22 includes a side portion 23 that covers the large-diameter portion 12 and the hanging portion 13b laterally, and an upper portion 24 that covers the outer peripheral portion 3A of the lid member 3 above. It is made up of. The side part 23 has a cylindrical shape whose upper part is larger in diameter than the lower part, and the upper part 24 has an inner peripheral edge part 24a and is formed in an annular shape in plan view.

  As shown in FIG. 4 and FIG. 5, such an outer package 4 is laminated on the container body 1 side, that is, the heat insulating sheet 25 made of foamed resin on the inner side, and the outer side of the heat insulating sheet 25 so as to be a product (contents). The basic structure is a laminated structure composed of a heat-shrinkable film (film to be printed) 26 for printing the above information. However, the lid exterior portion 22 of the exterior body 4 has a single layer structure of the heat-shrinkable film 26.

  In addition, the heat insulation sheet 25 consists of a sheet | seat about 100-500 micrometers thick which consists of foamed resin, such as a foamed polystyrene, a foamed polypropylene, and a foamed polyethylene. The expanded polystyrene is mainly composed of a general-purpose polystyrene foamed with various foaming agents or a copolymer obtained by copolymerizing polystyrene with butadiene, acrylonitrile, methacrylic acid, acrylic acid, acrylic esters, etc. Can be employed that is foamed with various foaming agents containing 50% by weight or more (preferably 70% or more). Furthermore, the heat insulating sheet 25 preferably has heat shrinkability in one direction, and the shrinkage rate is preferably 50% or more.

  The heat-shrinkable film 26 is a film having a thickness of about 20 to 60 μm formed by stretching a non-foamed resin such as polypropylene, polystyrene, or polyester. The thickness of the heat insulating sheet 25 is set to be thicker than the thickness of the heat shrinkable film 26. In this embodiment, the heat insulating sheet 25 has a thickness of 311 μm and the heat shrinkable film 26 has a thickness of 30 μm.

  By the way, the area | region which the cover exterior part 22 occupies the exterior body 4 corresponds to the starting point position p1 (the edge 25a of the below-mentioned heat insulation sheet 25 mentioned later) in the position slightly lower than the connection part 7 in this embodiment. ) Is an area above the starting point position p1 and extends over the outer peripheral portion 3A of the lid member 3. In this case, the outer peripheral portion 3A of the lid member 3 is a range including at least the annular contact portion 3a of the annular fitting portion 19 of the lid member 3.

  In other words, in this embodiment, the radial width B1 of the upper portion 24 is located approximately on the inner diameter side of the width obtained by projecting the annular fitting portion 19 upward or slightly wider than the width obtained by projecting the annular fitting portion 19 upward. It is extended like this.

  The peripheral wall exterior portion 20 of the exterior body 4 has a laminated structure of a heat insulating sheet 25 and a heat-shrinkable film 26, and the peripheral wall 5 (strictly speaking, the outer peripheral surface of the peripheral wall main body portion 10 and the lower peripheral wall portion 9. The inner diameter is set so that it can be externally fitted to the peripheral wall 5 of the container main body 1 with a predetermined distance from the tip of the vertical rib 15 on the outer peripheral surface of the container main body. Corresponding to one peripheral wall 5, it is formed in an inverted conical cylinder shape.

  As shown in FIG. 3, the bottom wall exterior portion 21 is formed such that the front end side (inner peripheral edge side) is separated from the inner peripheral surface of the peripheral wall exterior portion 20. Specifically, the bottom wall exterior portion 21 includes an inclined wall portion 27 and a horizontal annular portion 28. The inclined wall portion 27 is tapered so that the distal end (inner peripheral edge) is located on the inner side of the peripheral wall exterior 20 from the proximal end (outer peripheral edge) and tapers toward the distal end side. The inclination angle of the inclined wall portion 27 with respect to the inner peripheral surface of the peripheral wall exterior portion 20 is preferably set to 30 ° to 60 °. The horizontal annular portion 28 extends toward the central axis of the container body 1 on the inner peripheral edge of the inclined wall portion 27.

  In a state where the container body 1 is sheathed on the exterior body 4, the bottom plate portion 6 a of the bottom wall 6 of the container body 1 and the horizontal annular portion 28 of the exterior body 4 are in contact with each other, and the annular contact portion 3 a of the lid member 3. The upper portion 24 of the lid exterior portion 22 of the exterior body 4 abuts from above.

  As shown in FIG. 1, an opening means 30 is provided for opening the lid exterior portion 22 so as to be detached from the peripheral wall exterior portion 20. The unsealing means 30 includes a cut perforation line 30a provided in the middle of the circumferential direction from the upper portion 24 of the lid exterior portion 22 to the side portion 23, and a boundary portion between the peripheral wall exterior portion 20 and the lid exterior portion 22. And another cut perforation line 30b continuous to the cut perforation line 30a. The cut perforation line 30a is formed in a pair spaced apart in the circumferential direction so as to be as wide as a finger (in this embodiment, set to 10 mm), and the cut perforation line 30b extends along the circumferential direction of the peripheral wall exterior portion 20. Is provided.

  Here, the cut perforated lines 30a and 30b of the upper part 24 and the side part 23 will be described in more detail with reference to FIGS. 6A is a plan view of a sheet body S used for the exterior body 4 as will be described later. FIG. 6B is a plan view of the sheet body S which is subjected to heat shrinkage (thermoforming). It is the figure which expanded the engraved recessed part 31a of the cut perforation line 30a after setting it as the exterior body 4 by this.

  The cut perforation line 30a includes a plurality of engraved recesses 31a on the same line and a continuous part 32a (made of a heat-shrinkable film) therebetween. In the state of the sheet body S, the engraved recess 31a is preferably a cut that penetrates the heat-shrinkable film 26. In the state in which the sheet body S is formed into a tubular shape and thermally contracted to form the exterior body 4, each engraving is performed. The recess 31a is preferably in an elongated shape. In this case, it is formed in a substantially elliptical hole.

  With reference to FIG. 1, in the state where the sheet body S is the exterior body 4, the engraved recess 31 a in the upper portion 24 is arranged so as to be inclined with respect to the center in the circumferential direction, and the engraved recess facing the circumferential direction. As for 31a, the radial direction outer side is spaced apart in the circumferential direction compared with the radial direction inner side. That is, the engraved recess 31a facing in the circumferential direction has a square shape in plan view. In other words, the major axis direction 31 of the engraved recess 31 a is formed to have an acute angle θ with respect to the radially outer direction 32. Furthermore, in the engraved recess 31a adjacent to the radial direction, the radially outer end 33a of the radially inward engraved recess 31a and the radially inward side of the radially outward engraved recess 31a. When viewed from the center axis of the container body 1 as the center, the end portion 33b is at substantially the same radial position. Therefore, the cut perforated line 30a in the state of the sheet body S is formed so as to be the substantially elliptical hole when the sheet body S is the exterior body 4.

  The engraved recesses 31a in the side portions 23 of the exterior body 4 are arranged so as to be inclined with respect to the circumferential center (vertical center), and the engraved recesses 31a facing each other in the circumferential direction are lower on the lower side than on the upper side. Are spaced apart in the circumferential direction. That is, the engraved recess 31a facing in the circumferential direction has a square shape when viewed from the side. In other words, the major axis direction 31 of the engraved recess 31 a is formed to have an acute angle θ with respect to the lower direction 32. Further, between the engraved recesses 31a adjacent in the vertical direction, the lower end portion of the upper engraved recess portion 31a and the upper end portion of the lower engraved recess portion 31a are substantially in the same plane position. Similarly, the engraved recess 31a in the side portion 23 of the exterior body 4 is preferably a cut through the heat-shrinkable film 26 in the state of the sheet body S, and the sheet body S is formed into a cylindrical shape and thermally contracted. Thus, it is preferable to have an elongated shape in the state of the exterior body 4. In FIG. 6B, the description of the engraved recess 31a in the upper portion 24 and the engraved recess 31a in the side portion 23 is also used, and common reference numerals are given.

  The engraved recess 31b of the cut perforation line 30b is provided over the entire circumference of the exterior body 4, and each engraved recess 31b is formed with a simple minute cut. The height direction position of the cut perforation line 30b is disposed above the start point p1 and above the connection portion 7 of the container body 1. In addition, the area of the engraving recess 31a of the upper part 24 and the side part 23 is set larger than the area of the engraving recess 31b, and the engraving recess 31a at the lowest end of the side part 23 is any of the engraving recesses 31b. It is preferable that they are continuous. By doing in this way, it is because the area | region of the engraved recessed part 31a is easy to cut out so that it may mention later.

  Next, with reference to FIG. 7 thru | or FIG. 12, the method of manufacturing the exterior body 4 of the said structure and manufacturing the heat insulation container A is demonstrated. Here, the method of manufacturing the heat insulating container A includes a process of manufacturing the container main body 1 having the above-described configuration, a process of manufacturing the sheet body (heat-shrinkable resin sheet) S to be the exterior body 4, and a cylinder of the sheet body S. A container body containing contents such as soup, noodles and other instant foods, a process of preforming (also referred to as a preform) after forming the container, a process of preforming the exterior body 4 and then mounting (sheathing) the container body 1 A step of attaching the lid member 3 to the opening 2 of the container body 1 after being put into the container 1, and a step of thermally shrinking the outer casing 4 preformed into a cylindrical shape after the lid member 3 is attached to the opening 2. Have.

  First, with reference to FIG. 7, a process of manufacturing a planar sheet body S that becomes the exterior body 4 after becoming the cylindrical body S <b> 2 in the subsequent process will be described. The sheet body S has a laminated structure formed by bonding the heat insulating sheet 25 and the heat-shrinkable film 26, and is formed by dividing the laminated sheet body S3 for forming a sheet body. In producing the laminated sheet S3, first, a heat-shrinkable film 26 made of non-foamed resin having information on contents such as letters and designs printed on one surface and a heat insulating sheet 25 made of foamed resin are prepared. Keep it. Although the thickness and material of the heat-shrinkable film 26 and the heat insulating sheet 25 are as described above, a plurality of sheet bodies S having two widths B2 and B3 (two sheets are taken as an example in this embodiment) are obtained. Set as follows. In addition, width B2, B3 of the heat-shrinkable film 26 and the heat insulation sheet 25 is changed according to the height and diameter of the container main body 1.

  Moreover, in manufacture of lamination sheet body S3, the adhesive agent 40 is apply | coated to the other one side surface of the heat-shrinkable film 26. FIG. As the adhesive 40, it is preferable to use an adhesive for dry lamination such as urethane or acrylic. In this case, the adhesive 40 is wider than the width B2 of the heat-shrinkable film 26 on both sides of the heat-shrinkable film 26 in the center in the width B2 direction and excluding the non-adhesive intermediate region 41 along the length direction C. This is performed using the adhesive application roller 42, and the adhesive 40 is applied in a parallel strip shape through the non-adhesive intermediate region 41. And after apply | coating the adhesive 40 and drying a solvent, it heat-shrinks by crimping | bonding the heat insulation sheet 25 to the heat-shrinkable film 26 one by one using the press roller 43 wider than width B3 of the heat insulation sheet 25. The adhesive film 26 and the heat insulating sheet 25 are fixed to each other. Here, when the heat insulating sheet 25 is stacked on the heat-shrinkable film 26, the heat insulating sheet 25 is formed while forming a cut intermediate region 45 having the same width as the non-adhesive intermediate region 41.

  The cut intermediate region 45 is provided by forming a pair of slits 46 in the heat insulating sheet 25 at a position having the same width as the non-adhesive intermediate region 41. The cut-out portion 47 of the heat insulating sheet 25 is sequentially wound by a winding roller 48 provided separately. In addition, in FIG. 7, the flow direction of the heat insulation sheet 25 and the heat-shrinkable film 26 is from the right direction (upstream side) to the left direction (downstream side), and the application of the adhesive 40 as described above, formation of the slit 46, The crimping operation is automatically performed as a series of operations (for example, it can be performed by applying a dry laminating apparatus). In addition to such a series of steps, cut perforation lines 30a and 30b (to be precise, cuts that become the cut perforation lines 30a and 30b) as the opening means 30 are formed. The cut perforated lines 30a and 30b are arranged at positions corresponding to the size, that is, the diameter and height of the container body 1. In this case, a cut perforation line 30b is provided along the length direction at a predetermined position in the width direction according to the height of the container body 1, and the cut perforation line 30a is predetermined in the length direction according to the diameter of the container body 1. It is arranged at a position in a direction perpendicular to the cut perforation line 30b.

  The laminated sheet body S3 manufactured as described above is divided along the length direction at the center position 41b in the width direction of the non-adhesive intermediate region 41 (in this embodiment, divided into two). By dividing the non-adhesion intermediate region 41, an extended portion 41a extended from the end edge portion 25a of the heat insulating sheet 25 is formed.

  Furthermore, the laminated sheet body S3 divided as described above is cut into a length corresponding to the circumferential length of the container body 1 to form the sheet body S. Next, the longitudinal ends of the sheet body S are adhered to each other with a heat seal or an adhesive to form a cylindrical shape. In this state, the sheet body S can be thermally contracted in the circumferential direction. The heat shrinkage rate of the heat insulating sheet 25 is measured by, for example, the shrinkage rate when immersed in oil at a predetermined temperature for 10 seconds. In this embodiment, the heat shrinkage rate is 5% or less at 80 ° C. and 30 to 60% at 110 ° C. It is. The shrinkage rate of the heat-shrinkable film 26 can be selected from about 20 to 80%, but may be large when the shrinkage rate of the heat insulating sheet 25 is small, and may be small when the shrinkage rate of the heat insulating sheet 25 is large.

  On the other hand, as shown in FIGS. 8 and 9, a die 50 and a press die 51 are prepared in advance from the sheet body S to form a first cylindrical portion 60 to be described later, which will be the peripheral wall exterior portion 20 and the bottom wall exterior portion 21. Keep it. The die 50 has a same-diameter portion 50a having a predetermined axial length at one end, and has a tapered portion 50b having a small outer diameter from the same-diameter portion 50a toward the other end, and a truncated cone. It is formed in a shape. The predetermined length in the axial direction of the same diameter portion 50a is equal to the width of the non-bonding intermediate region 41 of one sheet S. The outer diameter D1 of the same diameter portion 50a is set to be slightly larger than the outer diameter D2 of the top plate portion 13a which is the maximum diameter of the container body 1. The truncated right cone refers to a shape obtained by cutting a right cone shaped tip in a direction perpendicular to the center.

  A concave portion 52 into which the press die 51 is fitted is formed on the other end surface of the taper portion 50b of the die 50, and an annular convex portion 53 whose upper end is substantially horizontal is formed on the outer peripheral edge of the other end surface. Yes. The inner peripheral surface of the annular convex portion 53 is formed in a tapered shape, and the angle formed by the outer peripheral surface of the mold 50 and the inner peripheral surface of the annular convex portion 53 is the bottom wall exterior to the peripheral wall exterior portion 20 of the exterior body 4. The angle corresponding to the inclination angle of the portion 21 is set. The press die 51 includes a convex portion 54 that is fitted into the concave portion 52. The convex portion 54 is formed in a truncated cone shape corresponding to the shape of the inner peripheral surface of the annular convex portion 53.

  As shown in FIGS. 8A and 8B, the cylindrical sheet body S is mounted so as to cover the outer peripheral surface of the mold 50, and one end opening edge (the edge of the non-adhesive intermediate region 41) of the sheet body S is formed. The mold 50 is moved in the direction of the central axis until it abuts one end of the mold 50. At this time, the non-adhesive intermediate region 41 is mounted so as to be fitted onto the same-diameter portion 50a. Next, as a preforming (preform) step, hot air H1 or the like is applied to the other end side of the sheet body S on which the mold 50 is fitted and heated. Then, since the sheet body S has heat shrinkability, as shown in FIGS. 8 (c) and 9 (a), the cylindrical sheet body S is reduced in diameter toward the center thereof, It will be in close contact with the outer peripheral surface. When the sheet body S (especially the other end portion) is further heated, the other end portion of the sheet body S contracts toward the center in the direction of the central axis of the mold 50 as shown in FIGS. Will fall into a horizontal ring. In addition, if the heat of the hot air H1 reaches the non-adhesion intermediate region 41 that is one end side of the sheet body S, it is conceivable that this portion also thermally shrinks. However, since one end side of the sheet S is fitted with the same diameter portion 50a, it does not heat shrink beyond the outer diameter of the same diameter portion 50a.

  In this state, the heating is stopped, and the other end forming the horizontal ring of the sheet S is pressed by the press die 51 as shown in FIGS. 8 (c), 9 (c), and 10. In the state where the pressing is performed, the heating to the sheet is stopped, but the sheet is softened by the heating so far, so that the other end of the sheet S is pressed as shown in FIG. The convex portion 54 of the mold 51 is smoothly pushed into the concave portion 52 of the mold 50 using the upper end portion of the annular convex portion 53 as a bending fulcrum.

  As a result, a tapered portion corresponding to the outer peripheral shape of the press die 51 is formed. At the same time, the portion on the other end side from the bottom wall exterior portion 21 is pressed into the concave portion 52 of the mold 50 while maintaining a horizontal annular shape. After this, the press die 51 is separated from the die 50, and the sheet is removed from the die 50. The above is the preforming process.

  By such a preforming step, the sheet body S formed into a cylindrical shape becomes a cylindrical body S2 having a first cylindrical portion 60 and a second cylindrical portion 61, as shown in FIG. That is, the first cylindrical portion 60 has the above-described peripheral wall exterior portion 20 and bottom wall exterior portion 21. However, the second cylindrical portion 61 maintains a cylindrical shape in an unheat-shrinked state by the same-diameter portion 50 a of the mold 50. Here, as described above, the second cylindrical portion 61 formed of the sheet S formed into a cylindrical shape is formed by the extension portion 41a (non-adhesive intermediate region 41), and is a portion that becomes the lid exterior portion 22 in a later step. is there. In addition, since the sheet body S is formed by being divided into two parts as described above, the width of the sheet body S is required to be twice as long as that of one lid exterior part 22, and the length in consideration of heat shrinkage. Dimensions are required.

  Next, as shown in FIG. 12, the container body 1 is covered with the cylindrical body S2 formed by preforming the sheet body S as described above. At this time, the bottom plate portion 6 a of the container body 1 is made to contact the horizontal annular portion 28. Then, the contents are put into the container body 1 and the lid member 3 is attached to the opening 2 of the container body 1. Then, as shown in the figure, the 2nd cylindrical part 61 is heated with the hot air H2. Then, as shown by the phantom line in FIG. 4, the hot air H2 causes heat shrinkage so that the upper part of the second cylindrical part 61 falls down, and the side part of the second cylindrical part 61 has the large diameter part 12 of the flange part 13 and The lid exterior part 22 is formed by heat shrinking so that the drooping part 13b is externally covered. In other words, the large-diameter portion 12 and the hanging portion 13 b are externally covered by the side portion 23 of the lid exterior portion 22, and the annular fitting portion 19 of the lid member 3 is externally covered by the upper portion 24 of the lid exterior portion 22. It becomes like this. Then, the second cylindrical portion 61 is thermally contracted to form the lid exterior portion 22, and the exterior body 4 (the lid exterior portion 22 and the horizontal annular portion 23) increases the height of the lid member 3 and the bottom plate portion 6 a of the container body 1. The state in which the lid member 3 is attached to the opening 2 is held. Thus, the heat insulating container A containing the contents is manufactured.

  By the way, when the 2nd cylindrical part 61 is heated by the hot air H2, it is preferable to make it also shrink | contract the upper part (single layer of the heat-shrinkable film 26) of the surrounding wall exterior part 20 which covers the upper part of the surrounding wall 5 with the heat. . As described above, the upper portion of the peripheral wall exterior portion 20 is thermally contracted inward in the radial direction, so that a portion of the exterior body 4 covers the stepped connection portion 7 of the container body 1 from the outside, and FIG. As shown, the upper part of the peripheral wall exterior part 20 is locked to the connection part 7.

  According to the first embodiment of the present invention, the step of preparing another shrink film for providing the lid exterior portion 22, covering the container body 1 with this, and thermally shrinking the shrink film may be omitted. In addition, since the shrink film can be omitted, the cost can be reduced accordingly.

  And it can prevent that the lid member 3 remove | deviates or the lid member 3 is easily opened by heat shrinking and covering the outer peripheral part 3A of the lid member 3 from the side and above. become. Alternatively, by covering the lid member 3 with the lid exterior portion 22, it is possible to prevent dust and the like from adhering to the opening 2.

  By the way, it is necessary to open the lid member 3 in order to eat and drink the contents. In this case, the portion 24b between the cut perforation line 30a on the inner peripheral edge 24a in the upper portion 24 of the lid exterior portion 22 is pinched with fingers and pulled outward in the radial direction. At this time, the engraved recesses 31a facing each other in the circumferential direction are formed in a square shape by separating the radially outer side in the circumferential direction as compared with the radially inward side. The force pulled outward is less likely to converge between the cut perforations 30a facing in the circumferential direction. Further, since the engraved concave portions 31a adjacent to each other in the radial direction are close to each other, the force drawn radially outward is applied to the continuous portion 32a of the engraved concave portion 31a. 24 will be cut | disconnected from the perforation line 30a so that it may follow the recessed part 31a inside and outside radial direction.

  As described above, with respect to the cut perforation line 30a provided in the side part 23, the portion 24b between the cut perforation line 30a at the radially inner part end portion of the upper part 24 of the lid exterior part 22 is pinched with fingers, and the radial direction After pulling outward, by pulling downward further, the lid exterior part 22 can be cut reliably along the cut perforation line 30a, and the region sandwiched by the cut perforation line 30a is cut off. Can do. And since the lid | cover exterior part 22 is the single layer structure of the heat-shrinkable film 26, it can be easily cut | disconnected along the cut perforation lines 30a and 30b with the force of fingers.

  And after cutting the area | region (indicated by the code | symbol R of FIG. 1) pinched | interposed with the cut perforation line 30a, it cuts off so that the cover exterior part 22 may be stripped in the circumferential direction so that the cut perforation line 30b may be used. Then, the lid exterior part 22 is opened. As a result, the outer peripheral portion 3 </ b> A of the lid member 3 is exposed (opened), so that the lid member 3 can be removed from the container body 1, and hot water can be poured into the container body 1. And when pouring hot water into the container main body 1 and eating and drinking the contents, the container main body 1 is gripped with fingers through the heat insulating sheet 25, so the heat inside the container main body 1 is transmitted to the fingers. It is difficult and can be safely held.

  When the lid member 3 is removed and the contents are eaten and eaten, the mouth of the flange portion 13 of the container main body 1 is opened, but the lid exterior portion 22 is removed, and the container is viewed from below the connecting portion 7. Since the main body 1 is exposed, the exterior body 4 does not get in the way even if the mouth is formed in the flange portion 13. A part of the exterior body 4 covers the stepped connection portion 7 of the container body 1 from the outside, and the upper portion of the peripheral wall exterior portion 20 is locked to the connection portion 7. Even in such a case, it is possible to avoid a state in which the container main body 1 comes out of the exterior body 4.

  13 and 14 show a second embodiment. FIG. 13 is a perspective view of the heat insulation container A, and FIG. 14 is a plan view of the sheet body S used for the exterior body 4 of the heat insulation container A. The structure from which the heat insulation container A of 2nd embodiment differs from the heat insulation container A of 1st embodiment is demonstrated. That is, all the exterior bodies 4 including the lid exterior part 22 are composed of a laminated body of the heat insulating sheet 25 and the heat-shrinkable film 26, and the configuration of the opening means 30 is different.

  More specifically, in the first embodiment, the upper part 24 and the side part 23 of the lid exterior part 22 are constituted by a single-layer structure of the heat-shrinkable film 26, but in the second embodiment, the outer peripheral part of the lid member 3 A cover exterior portion 22 (upper portion 24 and side portion 23) that covers 3A, a peripheral wall exterior portion 20 that covers the peripheral wall 5, and a bottom wall exterior portion 21 that covers the bottom wall 6 are a heat insulating sheet 25 and a heat-shrinkable film 26. It is comprised with the laminated body. The cut perforation line 30c in the exterior body 4 is provided in a spiral shape on the lid exterior part 22, and the cut perforation line 30c includes a plurality of cut recesses 31c on the spiral and continuous portions therebetween, and the cut recesses 31c. Is a hole penetrating the exterior body 4.

  The engraved recess 31c is provided in a single spiral shape on the lid exterior portion 22, and the engraved recess 31c has a starting point p2 at any one location radially inward in the upper portion 24 of the lid exterior portion 22, The engraved recess 31c (hole) is gradually displaced outward in the radial direction. The end point p3 of the engraved recess 31c is preferably lower than the flange portion 13 of the container body 1 in the side portion 23. In the second embodiment, the engraved recess 31c is formed with fine cuts.

  In manufacturing such an exterior body 4, the engraved recess 31 c is formed in the state of the sheet body S, and when the sheet body S is formed into a cylindrical shape and preformed in a subsequent process of manufacturing the sheet body S. In the same manner as in the first embodiment, the rectangular concave part S1 to be the second cylindrical part 61 is linearly inclined so as to connect the diagonal corners of the rectangular part S1 to form the engraved concave part 31c. When the exterior body 4 (the heat insulating container A) is manufactured from the sheet body S, it becomes a spiral shape. About the manufacturing process of the exterior body 4 by preforming, and the subsequent manufacturing process of the heat insulation container A, it is the same as that of said 1st embodiment, Moreover, the same type | mold 50 and the press die 51 are used.

  However, since all of the exterior body 4 including the lid exterior part 22 has a laminated structure, when the sheet body S is manufactured, the heat insulating sheet 25 and the heat shrinkable film 26 are bonded to the adhesive application roller 42 and the pressure roller 43. It is not necessary to form the slits 46 in the heat insulating sheet 25 as in the first embodiment. Thereby, compared with 1st embodiment, the installation for manufacture of the exterior body 4 (sheet body S) can be simplified by that much.

  In addition, since it is not necessary to prepare a shrink film and cover the container body 1 with this specially to provide the lid exterior portion 22, the process of covering the shrink film can be omitted, and the shrink film can be omitted. Can reduce the cost accordingly.

  And it can prevent that the lid member 3 remove | deviates or the lid member 3 is easily opened by heat shrinking and covering the outer peripheral part 3A of the lid member 3 from the side and above. become. Alternatively, by covering the lid member 3 with the lid exterior portion 22, it is possible to prevent dust and the like from adhering to the opening 2.

  In the heat insulating container A of the second embodiment, when opening the lid exterior portion 22, the vicinity of the starting point p2 of the engraved recess 31c on the inner peripheral edge 24a is pinched with fingers, in the spiral direction that is the formation direction of the engraved recess 31c. If it cuts off, the lid exterior part 22 will tear along the engraved recessed part 31c, will reach the end point p3 along the spiral shape, and the lid exterior part 22 will be opened. In this case, since the heat insulating sheet 25 is easily torn in the lateral direction (radial direction) due to the orientation of foaming, the cover exterior portion 22 is a laminated structure of the heat insulating sheet 25 and the heat shrinkable film 26 so that the heat insulating sheet 25 is for heat insulation. Even if it has a predetermined thickness and is made of foamed resin, the lid exterior portion 22 can be easily opened with the finger and the lid member 3 can be removed.

  After that, hot water is poured into the container main body 1, and even if the heat insulating container A is gripped when eating and drinking the contents, it can be safely handled because it is gripped through the heat insulating sheet 25. And when removing the lid member 3 and eating and drinking the contents, a mouth is attached to the flange portion 13 of the container main body 1, but the end point p3 of the engraved recess 31c is below the connection portion 7. There is a portion where the container body 1 is exposed from the lower side than the connection portion 7, and if the mouth is made from this portion to the flange portion 13, the exterior body 4 does not get in the way. In addition, the other structure of the heat insulation container A is the same as that of 1st embodiment.

  A third embodiment will be described based on FIGS. 15 and 16. FIG. 15 is a perspective view of the heat insulation container A, and FIG. 16 is a plan view of the sheet body S used for the exterior body 4 of the heat insulation container A. Similarly to the exterior body 4 of the second embodiment, the exterior body 4 of the third embodiment includes a laminated structure of a heat insulating sheet 25 and a heat-shrinkable film 26 including the lid exterior part 22. The unsealing means 30 includes a cut perforated line 30d, an unsealing tape (tier tape) 70 as a band, and a knob 71 for peeling off the unsealing tape 70.

  The cut perforated lines 30d are formed on the peripheral wall exterior 20 in pairs in the height direction and over the entire circumferential direction. In the region R1 between the cut perforated lines 30d and on the back surface side of the peripheral wall exterior portion 20 (heat insulating sheet 25), the opening tape 70 is fixed with an adhesive as indicated by a virtual line. The height direction positions of the cut perforation line 30d and the opening tape 70 are located below the flange portion 13 of the container body 1, and are the boundary portion R2 between the lid exterior portion 22 and the peripheral wall exterior portion 20. The cut perforation line 30 d is composed of a plurality of engraved recesses 31 d on the same height plane and a continuous portion therebetween, and the engraved recess 31 d is a hole that penetrates the exterior body 4.

  Further, the knob 71 is provided on the peripheral wall exterior portion 20 to be picked with fingers when the opening tape 70 is peeled radially outward. This knob 71 is formed by engraving a U-shaped slit 72 at a portion corresponding to the opening tape 70 of the peripheral wall exterior portion 20 in the height direction. The slit 72 penetrates the peripheral wall exterior 20 inward in the radial direction. The width in the height direction of the slit 72 is set to be slightly larger than the opening tape 70. The opening tape 70 is generally used and is made of a synthetic resin such as polypropylene.

  The opening tape 70 is attached to a predetermined position in the width direction of the heat insulating sheet 25 in the manufacturing process of the sheet S. The sheet S is manufactured by applying the adhesive 40 to the heat-shrinkable film 26 and bonding the heat-insulating sheet 25 and the heat-shrinkable film 26 in the same manner as described above. The boundary portion R2 where the opening tape 70 is provided is more preferably lower than the connecting portion 11 of the container body 1 when the exterior body 4 is manufactured from the sheet body S and the container body 1 is exteriorized. This is a position where the upper end portion of the peripheral wall exterior portion 20 does not get in the way when a mouth is attached for the purpose. The cut perforated line 30d and the U-shaped slit 72 are formed in a process after the heat insulating sheet 25 and the heat-shrinkable film 26 are bonded.

  In the heat insulating container A having the exterior body 4 in the third embodiment, in order to open the lid exterior portion 22, the knob 71 is grasped with fingers and pulled outward in the radial direction. Then, the end of the opening tape 70 is drawn radially outward together with the knob 71, and the cutout perforation line 30d is formed in the peripheral wall exterior part 20, so that the exterior body 4 extends along the cutout perforation line 30d. The lid exterior portion 22 is opened, and the lid member 3 can be removed.

  And even if the peripheral wall exterior part 20 is a laminated structure of the heat insulating sheet 25 and the heat-shrinkable film 26, it is easy to tear in the lateral direction due to the orientation of foaming of the heat insulating sheet 25. The lid member 3 can be easily opened by finger force and removed.

  In addition, since the cover exterior portion 22 can be provided without performing the process of providing a special shrink film to cover the container main body 1 and thermally shrinking the shrink film. The process of covering the film can be omitted, the shrink film can be omitted, and the cost can be reduced accordingly.

  Further, the cover exterior portion 22 is thermally contracted to cover the outer peripheral portion 3A of the cover member 3 from the side and above, so that the cover member 3 can be prevented from being removed or the cover member 3 can be easily opened. become. Alternatively, by covering the lid member 3 with the lid exterior portion 22, it is possible to prevent dust and the like from adhering to the opening 2.

  In the first embodiment, the height position of the cut perforation line 30b is set at the boundary between the peripheral wall exterior 20 and the lid exterior 22. However, the height position of the cut perforation line 30b is not limited to this, and may be set to a position that hangs on the peripheral wall exterior portion 20 as shown in FIG. Even if the cut perforation line 30b is hung on the peripheral wall exterior part 20, it is easy to tear in the lateral direction due to the orientation of foaming in the heat insulating sheet 25. can do.

  In the first embodiment, the engraved recesses 31a facing each other are formed in a letter C shape. In conjunction with this, the cut perforation lines 30a in the upper part 24 of the lid exterior part 22 are arranged on the radially outer side. It is also conceivable to set the letter C so as to be spaced apart in the circumferential direction compared to the radially inner side. Also in this case, the force drawn radially outward by picking the region between the cut perforation lines 30a with fingers is not easily converged between the cut perforation lines 30a. Thus, the upper portion 24 of the lid exterior portion 22 is cut from the cut perforation line 30a so as to extend along the radially inscribed recessed portion 31a.

  Furthermore, in the first embodiment, the engraved recess 31a of the cut perforation line 30a is formed to have a square shape, but the present invention is not limited to this, and the longitudinal direction of the cut perforation line 30a is The upper portion 24 may be formed along the radial direction, and the side portion 23 may be formed along the vertical direction. The engraved recess 31a can also be formed in a simple cut shape. In any of these cases, as in the above embodiment, the upper portion 24 of the lid exterior portion 22 is easily cut from the cut perforation line 30a along the radially inscribed recessed portion 31a.

  In each of the above embodiments, the lid member 3 is a resin molded product molded by injection molding using a synthetic resin as a material, and is fitted to the opening 2 of the container body 1 by elasticity, but is not limited thereto. Absent. For example, a sealing lid (not shown) in which an aluminum foil and a laminate material such as a synthetic resin film or paper are laminated can be used. In this case, the lid member 3 is detachably attached to the top plate portion 13a to seal the container body 1 containing the contents. Even in the heat insulating container A using such a lid member 3, the shrink film is omitted by covering the container main body 1 with the outer package 4 having a laminated structure of the heat insulating sheet 25 and the heat-shrinkable film 26. In addition, the lid exterior portion 22 can be easily opened by providing an opening means.

  The engraved recesses 31a to 31d in each embodiment can be damaged by imparting scratches to the heat-shrinkable film 26 or the exterior body 4 without passing through the heat-shrinkable film 26 or the exterior body 4. It only has to be weaker than the part. In addition, in this invention, having a laminated structure means a structure in which all or part of the sheet body S has a laminated portion of the heat insulating sheet 25 and the heat-shrinkable film 26. The opening means 30 is useful even if the exterior body 4, particularly the lid exterior portion 22, has a laminated structure of the heat insulating sheet 25 and the heat shrinkable film 26 or a single layer structure of the heat shrinkable film 26. In any case, if the opening means 30 of the above embodiment is used, the lid exterior part 22 can be easily opened.

  The cut perforation lines 30b and 31b in each embodiment are formed on the sheet body S before the sheet body S is thermally processed (thermal shrinkage). However, the present invention is not limited to this, and the sheet body S is not limited thereto. The perforation lines 30b and 31b may be formed after the outer body 4 is formed by heat processing. In this case, the cut perforation lines 30a and 31b are naturally not affected by the thermal shrinkage of the sheet body S, so that it is not necessary to form the cut perforation lines 30a and 31b in consideration of the thermal contraction rate of the sheet body S. Accordingly, the design of the exterior body 4 is facilitated, the degree of design freedom can be improved, and the exterior body 4 can be designed with an emphasis on openability.

  In each of the above-described embodiments, the heat insulating sheet 25 is formed from a foamed resin such as expanded polystyrene having heat shrinkage, but is not limited to this, and a material that itself does not have heat shrinkage, for example, You may use paper, a nonwoven fabric, etc. In this case, even if the paper or nonwoven fabric itself does not have heat-shrinkability, the heat-shrinkable film 26 heat-shrinks so that the outer peripheral portion 3A of the lid member 3 is moved laterally and together with the heat-shrinkable film 26. It can be deformed to cover from above.

1 is an overall perspective view of a heat insulating container showing a first embodiment of the present invention. The front view which similarly shows the whole structure of a heat insulation container. Similarly front sectional drawing of a heat insulation container. Similarly front sectional drawing which expanded FIG. 4 further. The expanded sectional view of the part used as the cover exterior part in the sheet | seat body which becomes an exterior body similarly. Similarly, (a) is an overall plan view and (b) is an enlarged view of an engraved recess. The perspective view which similarly shows the manufacturing process of the sheet | seat body used as an exterior body. Similarly, in the explanatory diagram of the manufacturing process of the heat insulating container, (A) shows a state before the sheet body made cylindrical in the mold is externally fitted, and (B) after the sheet body made cylindrical in the mold is externally fitted. A state is shown, (C) shows a state after preforming, and (D) shows a state in which an exterior body is mounted on the container body. Similarly, (a) shows a state where hot air is applied to the sheet body, (b) shows a state where the sheet body is thermally contracted, and (c) shows a press die. The state before pressing is shown, and (D) shows the state where the press die is pressed. The perspective view which similarly shows a type | mold and a press type | mold. Similarly, it is explanatory drawing which shows the manufacturing process of an exterior body, and is a perspective view until it preforms from the state which made the sheet | seat body cylindrical. Similarly, it is explanatory drawing which shows the manufacturing process of a heat insulation container, (A) shows the state which carries out the external fitting of the preformed exterior body to a container main body, and (B) hot air is applied to the part used as a lid | cover exterior part. Indicates the state. The whole perspective view of the heat insulation container which shows the second embodiment of the present invention. The top view of the sheet | seat body which becomes an exterior body similarly. The whole perspective view of the heat insulation container which shows 3rd embodiment of this invention. The top view of the sheet | seat body which becomes an exterior body similarly. The whole perspective view of the heat insulation container which shows another embodiment.

Explanation of symbols

  A ... heat insulating container, S ... sheet body, S2 ... cylindrical body, 1 ... container body, 2 ... opening, 3 ... lid member, 3a ... annular contact part, 3b ... cylindrical part, 4 ... exterior body, 5 ... peripheral wall, 6 ... bottom part, 7 ... connection part, 8 ... upper peripheral wall part, 9 ... lower peripheral wall part, 12 ... large diameter part, 13 ... flange part, 13a ... top plate part, 13b ... drooping part, 19 ... annular fitting Joint part, 20 ... peripheral wall exterior part, 21 ... bottom wall exterior part, 22 ... lid exterior part, 23 ... side part, 24 ... upper part, 24a ... inner peripheral edge part, 25 ... heat insulation sheet, 26 ... heat shrinkable film 27 ... Slanted wall portion, 28 ... Horizontal annular portion, 29 ... Disc portion, 30 ... Unsealing means, 30a, 30b ... Cut perforation line, 31a ... Engraved recess, 32a ... Continuous portion, 42 ... Adhesive application roller, 40 ... Adhesive, 41 ... Non-adhesion intermediate region, 41a ... Extension part, 43 ... Pressure roller, 45 ... Removal intermediate region, 48 ... Winding Over la, 60 ... first cylindrical portion, 61 ... second cylindrical portion, 70 ... opening tape, 71 ... the tab

Claims (1)

  A bottomed cylindrical container body, a lid member provided at the opening of the container body, a peripheral wall exterior part that sheathes the peripheral wall part of the container body, and an outer peripheral part of the lid member that extends from the peripheral wall exterior part upward An exterior body having an annular lid exterior part that is sheathed from, and the exterior body is formed by forming a sheet body in which a heat insulating sheet and a heat-shrinkable film that has been printed are laminated into a cylindrical shape and thermally shrinking the sheet body. The heat insulating container is formed, and the sheet body has an extension part in which a heat-shrinkable film is extended from an upper end edge part of the heat insulating sheet, and the lid exterior part is formed by heat-shrinking the extension part. A heat insulating container formed.

Images