WO2015133034A1

WO2015133034A1 - Heat insulating sleeve

Info

Publication number: WO2015133034A1
Application number: PCT/JP2014/082981
Authority: WO
Inventors: 尚之北詰
Original assignee: 東罐興業株式会社
Priority date: 2014-03-05
Filing date: 2014-12-12
Publication date: 2015-09-11
Also published as: EP3115315A4; JP6161225B2; EP3115315A1; CN106061864A; CN106061864B; EP3115315B1; JPWO2015133034A1

Abstract

Provided is a heat insulating sleeve in which the deformation of a strip-like section caused by interference at a lock forming section is prevented. A heat insulating sleeve (120) is configured so that a heat insulating grip section is formed by sliding the part of the heat insulating sleeve, which is located above or below strip-like sections (121, 122), and bending or curving the strip-like sections (121, 122) to cause the strip-like sections (121, 122) to protrude to the outer peripheral side. In the strip-like sections (121, 122), the first strip-like sections (121) and the second strip-like sections (122) are arranged alternately. At least one of slits (130) has a lock forming section (131) for forming protrusions (127) and recesses (128) on strip-like sections (121, 122). Each of the strip-like sections (121, 122) has a narrow section having a smaller width in the left-right direction than the portions of the strip-like section, which are located above and below the narrow section. Outwardly protruding folds (124, 126) are formed at the narrow sections of the strip-like sections (121, 122).

Description

Insulation sleeve

The present invention relates to a heat insulating sleeve to be mounted on the outer peripheral surface of the body portion of the container body.

Conventionally, it has a container body having a body part and a bottom part, and a heat insulating sleeve fitted to the outer peripheral surface of the body part of the container body, and the heat insulating sleeve has a plurality of strips in the vertical direction within a certain range in the height direction. A plurality of slits for forming a piece are provided, and by sliding above or below the strip piece of the heat insulating sleeve, the plurality of strip pieces are bent or curved, and protrude to the outer peripheral portion to form a heat insulating grip part. Patent No. 4294579 discloses a structure in which a strip piece is deformed into a heat-insulating grip part by pushing up or down a heat-insulating sleeve by using human force or the like as a heat-insulating container. And Japanese Patent No. 4391908 (Patent Document 2) have been proposed, and corresponding results have been obtained.

These insulated containers have a plurality of strips bent or curved, and projecting to the outer peripheral part to form a heat-insulating gripping part, so that the projecting part is separated from the container body, so that the projecting part is gripped from the outside. Even so, it is important that heat is not transmitted to the hand that is held, and it is required that a plurality of strips do not return to their original shapes. Therefore, if only the sliding state of the heat insulating sleeve is maintained by friction or gravity, a plurality of strips may return to the original shape when strongly gripped, which may reduce the heat insulating effect. Further, there is a risk that the protruding portion of the strip will be slipped off from the hand when gripped. For this reason, in these known heat insulating containers, the strips are formed long in the height direction so that they can be folded irreversibly when sliding, or the protrusions are maintained as much as possible when gripped as a complicated fold shape. The above-mentioned problem has been reduced by adopting a configuration in which a separate member that is fixed to maintain the protrusion of the strip piece is added.

However, in these well-known heat insulating containers, the structure and mechanism as described above make it easy to push up and push down the heat insulating sleeve, and to require extra operations. There was a problem that the heat insulating gripping part could not be formed. Further, the provision of the structure and mechanism as described above has a problem that labor and cost for manufacturing and assembly are required.

Therefore, as an invention for solving the above-mentioned problems, the present applicant has proposed International Publication No. WO2012 / 160682 (Patent Document 3). In the heat insulating container 500 of this Patent Document 3, as shown in FIG. 10, a plurality of

strip pieces

521 and 522 includes a first strip piece 521 having a valley fold portion 523 at the upper end and a mountain fold portion 524 in the upper vicinity. The second strips 522 having the valley folds 525 at the lower end and the mountain folds 526 in the lower vicinity are alternately arranged, and at least one of the plurality of slits 530 is convex to the

strips

521 and 522. 527 and a lock forming part (bent part) 531 for forming a concave part 528, and the upper or lower part of the

strip pieces

521 and 522 of the heat insulating sleeve 520 is slid to form a heat insulating grip part on the heat insulating sleeve 520. In this case, the opposing convex portions 527 of the

strip pieces

521 and 522 on both sides slide in the vertical direction and are locked in a state of overcoming each other. Shape to devote

pieces

521 and 522 protrudes is maintained.

Japanese Patent No. 4294579 (all pages, all figures) Japanese Patent No. 4391908 (all pages, all figures) International Publication WO2012 / 160682

However, in the heat insulating container 500 of Patent Document 3, when the heat insulating sleeve 520 is slid in the vertical direction to form the heat insulating grip portion on the heat insulating sleeve 520, interference (unexpected catch) occurs in the lock forming portion 531. As a result, in a state where interference is generated in the lock forming portion 531, a force by sliding the heat insulating sleeve 520 is applied to the

strip pieces

521 and 522, so that the portions other than the mountain folded

portions

524 and 526 and the valley folded

portions

523 and 525 are applied. There is a problem in that deformation such as bending occurs in an unscheduled portion (for example, portion A in FIG. 10), or bending in a direction opposite to a predetermined direction may occur in the mountain folded

portions

524, 526 and the valley folded

portions

523, 525. was there.

Therefore, the present invention solves these problems, and an object of the present invention is to provide a heat insulating sleeve that suppresses deformation of a strip due to interference in a lock forming portion.

The present invention has a plurality of slits that are mounted on the outer peripheral surface of the body portion of the container body and that form a plurality of strips in a vertical direction within a certain range in the height direction, and the plurality of strips are bent or curved. A heat insulating sleeve in which a heat insulating grip portion is formed by projecting to the outer peripheral side, the plurality of strip pieces having a valley fold portion at the upper end and a mountain fold portion in the upper vicinity, and The second strips having the valley folds at the lower end and the mountain folds in the lower vicinity are alternately arranged, and at least one of the slits is in the middle region of the mountain folds of the left and right strips, The strip piece has a lock forming portion for forming a convex portion and a concave portion, each strip piece has a narrow portion formed to be narrower in the left and right widths than the portion located above and below the strip piece, , By being formed in the narrow part of each strip It is intended to solve the above problems.

According to the first aspect of the present invention, each strip piece is provided with a narrow portion having a narrower width on the left and right sides than the portion adjacent to the top and bottom thereof, and a mountain fold portion is formed in the narrow portion of the strip piece. When the heat insulation sleeve is slid in the vertical direction to form the heat insulation grip portion, the mountain fold portion is likely to be bent, and the strip piece is twisted to provide a narrow portion (in the thickness direction of the sleeve). (Slope of the strips) is likely to occur, and even when interference occurs in the lock forming portion, the interference is easily released, and deformation of the strip due to interference in the lock forming portion can be suppressed. .

According to the second aspect of the present invention, by forming the left and right widths of the mountain fold portion shorter than the dimension between the left virtual line and the right virtual line in the extending direction of the mountain fold portion, It becomes easy to produce twist of a strip piece.
According to the third aspect of the present invention, the cut portion is formed in at least one of the left and right ends of the mountain folded portion, whereby the width of the connecting portion of the mountain folded portion is further narrowed and the heat insulating sleeve is slid up and down. In this case, since the force applied to the heat insulating sleeve is easily concentrated on the mountain fold portion where the cut portion is formed, the certainty of bending at the mountain fold portion can be improved.
According to the invention of claim 4, the width of the connecting portion of the mountain folded portion is formed to be the shortest among the widths of the respective portions of the strip piece, so that the mountain folded portion is compared with other portions of the strip piece. It becomes easy to bend.
According to the fifth aspect of the present invention, the curvilinear portion is formed in at least a part of the slit that does not have the lock forming portion. Not only can it be easily formed, but when a heat insulating sleeve is slid up and down to form a heat insulating grip, a lateral force is generated between the strips on the left and right sides of the slit at the curved portion of the slit. Since the opposing convex portions of the strip pieces on both sides slide in the vertical direction and easily get over each other, it is possible to achieve good engagement in the lock forming portion. In addition, the amount of inclination when the strip pieces protrude so as to incline and the amount when the side surfaces of adjacent strip pieces approach or separate can be further finely adjusted by the shape of the curved portion. In accordance with the form and application, the degree of freedom in designing the material and thickness of the heat insulating sleeve, the shape of the strip, etc. increases.
According to the invention of claim 6, at least one of the mountain fold portion and the valley fold portion is provided with a crease so that the mountain fold portion or the valley fold portion is bent in a predetermined direction when the heat insulating grip portion is formed. Is likely to occur.

The side view which shows the heat insulation container which is one Embodiment of this invention. The side view which shows the sleeve for heat insulation. Explanatory drawing for demonstrating the width | variety of the upper mountain fold part of a 1st strip piece. Explanatory drawing for demonstrating the width | variety of the lower mountain fold part of a 2nd strip piece. The top view which shows the blank material which expand | deployed the sleeve for heat insulation. Explanatory drawing which shows the 1st process at the time of attaching a crease to the sleeve for heat insulation. Explanatory drawing which shows the 2nd process at the time of attaching a crease to the sleeve for heat insulation. Explanatory drawing which shows the 3rd process at the time of attaching a crease to the sleeve for heat insulation. Schematic which shows the sleeve for heat insulation after attaching a crease. The side view which shows the conventional heat insulation container.

DESCRIPTION OF SYMBOLS 100 ... Thermal insulation container 110 ... Container main body 111 ... Body part 113 ... Opening part 112 ... Bottom part 120 ... Thermal insulation sleeve 121 ... 1st strip piece 122 ... 2nd Strips 123 ... Upper valley folding part 124 ... Upper mountain folding part 125 ... Lower valley folding part 126 ... Lower mountain folding part 127 ... Convex part 128 ... Concave part 130 ... Slit 131 ··· Lock forming portion 132 ··· Side seam portion 133a ··· First left side slit portion 133b ··· First right side slit portion 134a · · · First left side connection portion 134b · · · First right side connection portion 135a .. Second left side slit part 135b ... Second right side slit part 136a ... Second left side connection part 136b ... Second right side connection part 140 ... Receiver 14・・・ Taper inner peripheral surface 142 ・・・ Mold surface 150 ・・・ Inner core 151 ・・・ Tapered outer peripheral surface 152 ・・・ Projection 160 ・・・ Push-up member LL ・・・ Left virtual line RL ・・・ Right virtual line

Hereinafter, a heat insulating container 100 according to an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the heat insulating container 100 includes a container main body 110 having a body 111 and a bottom 112, and a heat insulating sleeve 120 attached to the outer peripheral surface of the body 111 of the container main body 110. .

The heat insulating sleeve 120 is made of paper or resin, and is fixed (specifically bonded) to the outer peripheral surface of the body 111 only on the opening 113 side above the container. As shown in FIG. 1, a plurality of slits 130 for forming a plurality of

strip pieces

121 and 122 are provided in the vertical direction within a certain range in the height direction.

As shown in FIG. 1, the lowermost end of the heat insulating sleeve 120 protrudes by a predetermined height with respect to the lowermost end of the container body 110, and the heat insulating sleeve 120 is

strip pieces

121, 122 corresponding to this height. Is configured to be slidable upward while being bent or curved.

As shown in FIG. 2, the plurality of

strip pieces

121 and 122 includes a first strip piece 121 having a lower valley fold 125 at the lower end and a lower mountain fold 126 near the lower portion, and an upper valley fold 123 at the upper end. The second strips 122 having upper mountain folds 124 in the vicinity of the upper part are alternately arranged adjacent to each other in the circumferential direction. Each valley folding part 123,125 and each mountain folding part 124,126 are formed in linear form. The

strip pieces

121 and 122 each have a narrow portion that is narrower in width on the left and right sides than the portions adjacent to the upper and lower sides thereof, and the mountain folded

portions

124 and 126 are formed in the narrow portions of the

strip pieces

121 and 122.

As shown in FIG. 2, the mountain folded

portions

124 and 126 include connecting

portions

124 a and 126 a that connect upper and lower portions, and cut

portions

124 b and 126 b formed at the left and right ends of the mountain folded

portions

124 and 126. Yes. Considering both the ease of bending at the mountain folded

portions

124 and 126 and the strength of the mountain folded

portions

124 and 126, the width of the connecting

portions

124a and 126a is set to about 10 to 20% of the width of the mountain folded

portions

124 and 126. Is good. The positions of the connecting

portions

124a and 126a are preferably located at the center of the mountain folded

portions

124 and 126. The

notches

124b and 126b may be formed on one of the left and right ends of the mountain folds 124 and 126. Moreover, you may provide another notch part in the middle of the

connection parts

124a and 126a.

As shown in FIGS. 3 and 4, the width W1 of each mountain folded

portion

124, 126 is larger than the dimension W2 between the left virtual line LL and the right virtual line RL in the extending direction of each mountain folded

portion

124, 126. It is set short.

Here, the definition of the left virtual line LL and the right virtual line RL is as follows.
First, the left side slits 130 of the

strip pieces

121 and 122 include the first left side slit portion 133a formed in the vicinity of the

valley fold portions

123 and 125 of the

strip pieces

121 and 122, the

valley portions

123 and 125 of the strip pieces, A first left-side connecting portion 134a that connects between the left-side slit portion 133a and a second left-side slit that is formed in the vicinity of the valley-folded

portions

123 and 125 of the

strip pieces

121 and 122 that are positioned on the left side of the

strip pieces

121 and 122; Part 135a and a second left side connection part 136a that connects between the

valley folding parts

123, 125 and the second left side slit part 135a of the

strip pieces

121, 122 located on the left side of the

strip pieces

121, 122. Yes.
Similarly, with respect to the slit on the right side of the

strip pieces

121 and 122, the first right slit portion 133b formed in the vicinity of the

valley fold portions

123 and 125 of the

strip pieces

121 and 122, and the valley fold of the

strip pieces

121 and 122, respectively. 1st right side connection part 134b which connects between part 123,125 and the 1st right side slit part 133b, and the

strip folding parts

123 and 125 located in the right side of the said

strip pieces

121 and 122 are formed in the

trough folding parts

123 and 125 vicinity. The second right-side connection part that connects the second right-side slit part 135b and the valley-folded

parts

123, 125 and the second right-side slit part 135b of the

strip pieces

121, 122 located on the right side of the

strip pieces

121, 122. 136b.
As shown in FIGS. 3 and 4, each slit

part

133a, 133b, 135a, 135b is composed of a curved line or a straight line having a predetermined curvature and extends substantially in the vertical direction. It is connected to the valley fold

parts

123 and 125 extended in the substantially left-right direction via 134b, 136a, 136b. Note that the connecting

portions

134a, 134b, 136a, and 136b may be configured by straight lines, or may be configured by mixing straight lines and curves.
The left virtual line LL is, as shown in FIGS. 3 and 4, a virtual extension line extending the first left slit 133a and a virtual extension line extending the valley folds 123, 125 of the

strips

121, 122. And the virtual extension line extending the second left slit 135a and the virtual extension line extending the

valleys

123 and 125 of the

strips

121 and 122 located on the left side of the

strips

121 and 122, respectively. It is a line that connects the intersections.
Moreover, as shown in FIG.3 and FIG.4, the right virtual line RL is the virtual extension line which extended the 1st right side slit part 133b, and the virtual extension line which extended the

valley folding parts

123 and 125 of the

strip pieces

121 and 122, as shown in FIG. Between the virtual extension line extending the second right slit 135b and the virtual extension line extending the

valley portions

123, 125 of the

strip pieces

121, 122 located on the right side of the

strip pieces

121, 122. It is a line that connects the intersections.

Further, the widths of the connecting

portions

124a and 126a of the mountain folded

portions

124 and 126 are formed to be the shortest among the widths of the

respective strip pieces

121 and 122 in which the mountain folded

portions

124 and 126 are formed.

The plurality of slits 130 are alternately arranged in the circumferential direction in which the lock forming portions 131 are formed and in which the lock forming portions 131 are not formed. The lock forming portion 131 of the slit 130 forms a convex portion 127 and a concave portion 128 in the

strip pieces

121 and 122 on the left and right sides in the middle portion between the upper mountain fold portion 124 and the lower mountain fold portion 126 of the left and

right strip pieces

121 and 122. ing. In the present embodiment, the slit 130 sandwiched between the left side of the first strip 121 and the right side of the second strip 122 viewed from the front when the container is formed is used as the slit 130 having the lock forming portion 131.

As shown in FIG. 2, the convex portion 127 and the concave portion 128 are arranged from the upper side of the second strip piece 122 to the convex portion 127 (the concave portion 128 of the first strip piece 121) and the concave portion 128 (the convex portion 127 of the first strip piece 121. ), Convex portions 127 (the concave portions 128 of the first strip pieces 121), and concave portions 128 (the convex portions 127 of the first strip pieces 121), two each of which are alternately formed up and down.

As shown in FIG. 2, the slit 130 in which the lock forming portion 131 is not formed is composed of a curved portion. In addition, you may comprise the slit 130 in which the lock | rock formation part 131 is not formed from a linear part and a curve part.

Next, a method for manufacturing the heat insulating sleeve 120 will be described below.

First, as shown in FIG. 5, after applying paste to the side seam portion 132 of the blank material 120 ′ formed by punching, the blank material 120 ′ is wound into a cylindrical shape and the side seam portion 132 is pressure-bonded. Thus, the cylindrical heat insulating sleeve 120 shown in FIG. 2 is formed.

Next, as shown in FIG. 6, the heat insulating sleeve 120 is set on the receiver 140 having the tapered inner peripheral surface 141 that expands upward, and the diameter increases upward as shown in FIG. The heat insulation sleeve 120 is fixed to the receiver 140 by inserting the inner core 150 having the tapered outer peripheral surface 151 into the heat insulation sleeve 120 from above the heat insulation sleeve 120.

Next, as shown in FIG. 8, by pushing up the heat insulating sleeve 120 by the push-up member 160 and sliding the lower portion of the heat insulating sleeve 120 upward, as shown in FIG. The valley folds 123 and 125 and the mountain folds 124 and 126 can be bent in a predetermined direction. At this time, as shown in FIG. 6, the taper inner peripheral surface 141 of the receiver 140 is formed with a mold surface 142 having a shape corresponding to the shape of the heat insulating gripping portion protruding to the outer peripheral side of the heat insulating sleeve 120. In addition, the taper outer peripheral surface 151 of the inner core 150 is formed with a protruding portion 152 that slightly protrudes toward the outer peripheral side, so that each valley folded

portion

123, 125 and each mountain folded

portion

124, 126 have a predetermined direction. Prevents bending to the opposite side. In the above description, both the valley folds 123 and 125 and the mountain folds 124 and 126 have been described as having creases in advance. However, the fold folds are applied to either the valley folds 123 and 125 or the mountain folds 124 and 126. May be attached.

In this embodiment, every other slit 130 having the lock forming portion 131 is provided in the circumferential direction. However, the heat insulating sleeve 120 slides upward and the first strip piece 121 and the second strip piece 122 are provided. As long as it is possible to maintain a state of protruding outward, it may be provided in smaller numbers, such as every other two, or all may be slits 130 having the lock forming portion 131.

Further, in the above-described embodiment, when forming the heat insulating gripping portion on the heat insulating sleeve, the lower portion of the heat insulating sleeve is slid upward from the initial state, but the lower end of the heat insulating sleeve is placed on a horizontal surface, The upper portion of the sleeve or the container body 110 may be slid so as to be pushed down.

The heat insulating container of the present invention is easy to manufacture and assemble, reduces cost, can form the heat insulating gripping part with a simple operation, and maintains the protrusion of the strip piece even when gripped from the outside. Since it can be reliably held and securely gripped without being deformed, it can be suitably used as a cup-shaped container for packaging instant foods that are poured into hot water or heated in a microwave oven. In addition, since the appearance can be changed to a design characteristic by a simple operation, the present invention is not limited to the original use of heat insulation, and can be used for various cup-shaped containers.

Claims

Mounted on the outer peripheral surface of the body of the container body, having a plurality of slits forming a plurality of strip pieces in a vertical direction within a certain range in the height direction, and projecting to the outer peripheral side by bending or bending the plurality of strip pieces A heat insulating sleeve in which a heat insulating gripping part is formed,
The plurality of strip pieces include a first strip piece having a valley fold portion at the upper end and a mountain fold portion in the upper vicinity, and a second strip piece having a valley fold portion at the lower end and a mountain fold portion in the lower vicinity. Are arranged alternately,
At least one of the slits has a lock forming portion that forms a convex portion and a concave portion in the strip piece in an intermediate region of the mountain folded portions of the left and right strip pieces,
Each of the strips has a narrow portion formed to have a narrower left and right width than portions adjacent to the top and bottom thereof,
The heat-insulating sleeve, wherein the mountain-folded portion is formed in a narrow portion of each strip.
The slit on the left side of the strip piece includes a first left slit portion formed in the vicinity of the valley fold portion of the strip piece, and a second left side formed in the vicinity of the valley fold portion of the strip piece located on the left side of the strip piece. Having a slit portion,
The slit on the right side of the strip piece has a first right slit portion formed near the valley fold portion of the strip piece and a second right side formed near the valley fold portion of the strip piece located on the right side of the strip piece. Having a slit portion,
An intersection of a virtual extension line extending the first left slit portion and a virtual extension line extending the valley fold portion of the strip piece, and a virtual extension line extending the second left slit portion and the left side of the strip piece The line connecting the intersection with the virtual extension line that extends the valley part of the strip is positioned as the left virtual line,
An intersection of a virtual extension line extending the first right slit portion and a virtual extension line extending the valley fold portion of the strip piece, and a virtual extension line extending the second right slit portion and the right side of the strip piece When the line connecting the intersection with the virtual extension line that extends the valley part of the strip is positioned as the right virtual line,
2. The heat insulation sleeve according to claim 1, wherein the left and right widths of the mountain fold portion are shorter than the dimension between the left virtual line and the right virtual line in the extending direction of the mountain fold portion.
3. The heat insulation according to claim 1, wherein the mountain fold portion includes a connecting portion that connects upper and lower portions, and a cut portion formed in at least one of left and right ends of the mountain fold portion. Sleeve.
4. The heat insulation according to claim 1, wherein the width of the connecting portion of the mountain folded portion is formed to be the shortest of the widths of the respective portions of the strip pieces on which the mountain folded portion is formed. Sleeve.
The plurality of slits include a slit having the lock forming portion and a slit not having the lock forming portion,
The heat insulation sleeve according to any one of claims 1 to 4, wherein the slit having no lock forming portion has a curved portion at least in part.
The heat insulation sleeve according to any one of claims 1 to 5, wherein a crease is attached to at least one of the mountain fold portion and the valley fold portion.