JP2003165512A - Shrink packaging method, and shrink packaging body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shrink packaging method and a shrink packaging body capable of performing beautiful shrink packaging by using a packaging material with a tack label affixed thereto in advance. <P>SOLUTION: A cup-contained precooked noodle (a work) 10 is overshrink- packaged by using a packaging material 20 formed of a shrink film, and a tack label 30 such as a campaign seal is affixed to a part covering a top side of the work 10 on an inner side of the packaging material 20. The packaging material 20 comprises a base material formed of a transparent shrink film, a display printed layer formed on a back side of the base material, and a solid printed layer formed on a substantially entire surface of the base material, a transparent window part 20a without any display printed layer or solid printed layer is formed on a part covering the top side of the work 10 with the tack label 30 affixed thereto so that the tack label 30 can be visually checked from the outer side, and the heat shrinkage rate of the part is suppressed to be <20%. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shrink wrapping method and a shrink wrapping method used for shrink-wrapping an article to be packaged using a wrapping material made of a shrink film to which a tack label such as a campaign sticker is attached. Regarding packaging.

[0002]

2. Description of the Related Art Conventionally, for cupped products such as instant yakisoba with cups and instant ramen with cups,
After storing the contents in a cup-shaped container body, the mouth of the container body is closed by a sheet-shaped lid member, and is sold in a state in which it is over-shrink wrapped using a packaging material formed by a shrink film. There is.

In the case of applying overshrink wrapping to such a packaged product such as a cup product, as shown in FIG. 11, a long strip-shaped packaging material R continuously fed from a packaging material roll RL is formed. While being shaped into a tubular shape by 81, the packaged object M conveyed by the conveyer 82 is inserted, and both ends of the packaging material R shaped into a tubular shape are center-sealed by the center sealer 83, and then by the fusing sealer 84. By sequentially fusing and sealing the packaging material R between the packaged bodies M, the packaged body RM in which the packaged body M is wrapped with the packaging material R is formed.

The package RM formed in this manner is passed through the heating tunnel 86 while being transported by a transport means 85 such as a roller conveyor as shown in FIG. When the covering packaging material R is heat-shrinked, the packaging material M is over-shrink wrapped in a state where the packaging material R is substantially in close contact with the packaging material M.

[0005]

By the way, in order to enhance the sales promotion effect, such as cup-wrapped products which are over-shrink-wrapped in this way, such as a campaign sticker which is an entry ticket for an instant lottery or a prize. The tack label may be attached to the packaging material R covering the packaged object M, but as described above, the packaging material R formed of the shrink film is heated and shrunk so that the packaged material M Since a tack label that does not heat shrink is attached to the packaging material R in advance, the heat of the packaging material R is reduced when the packaging material R formed by the shrink film is heat-shrinked. The tack label may be peeled off from the packaging material due to shrinkage, or the tack label part that has been applied may have irregularities. Since the heat shrinkage of the packaging material R is partially suppressed in the portion where the packing material R is present, wrinkles may be generated around the tack label in the packaging material R, and a clean shrink wrap is applied to the packaged object M. There is a problem that you cannot do it.

Therefore, conventionally, a packaging material R made of a shrink film without a tack label is used,
After the object M to be packaged such as a cup is overshrink-wrapped, the tack label is attached to the outer surface of the heat-shrinkable packaging material R covering the object M in a separate process. I was working.

Therefore, an object of the present invention is to provide a shrink wrapping method and a shrink wrapping body which can perform a clean shrink wrapping using a wrapping material to which a tack label is attached in advance.

[0008]

Means for Solving the Problems and Effects Thereof In order to solve the above-mentioned problems, the invention according to claim 1 uses a packing material made of a shrink film to which a tack label is affixed in advance to form an entire packaged object. Or in the step of partially wrapping, of the packaging material that wraps the packaged object, substantially the entire region of the portion formed on the flat surface including the tack label is lower than the heat shrink temperature of the packaging material. A step of preliminarily heating and shrinking the packaging material in a state of being sandwiched between the packaged body and the pressing member held by
A shrink wrapping method is provided, which comprises a step of heating and shrinking the packaging material as a whole in a state where the pressing member sandwiching the packaging material with the packaged object is removed. The term "heat shrinkage temperature of the packaging material" as used herein means a temperature at which the packaging material thermally shrinks by 10% or more in the vertical direction or the horizontal direction, and the heat shrinkage rate of the packaging material is a silicon at a predetermined temperature. It is a value measured while immersed in an oil bath for 10 seconds. Therefore, "a temperature lower than the heat shrinkage temperature of the packaging material"
Allows the temperature at which the packaging material undergoes some heat shrinkage (heat shrinkage ratio is less than 10%).

As described above, according to this shrink wrapping method, in the packaging material that wraps the object to be packaged, the substantially entire area of the portion formed on the flat surface including the tack label is set to be higher than the heat shrinkage temperature of the packaging material. By the pressing member held at a low temperature, the packaging material was preheated and shrunk while being sandwiched between the packaging material and the packaged object. Of these, the portion formed on the flat surface including the tack label hardly causes heat shrinkage, and the other portion mainly causes heat shrinkage.

Further, since the packaging material preliminarily heat-shrinked in this way is already preformed so as to substantially conform to the outer shape of the packaged object, the state where the pressing member is removed in the next step Even if the packaging material is entirely heated with, the portion formed on the flat surface including the tack label is not significantly thermally shrunk or affected by the thermal shrinkage of other parts, and the packaging material is The shrink wrapping is performed in a state of being in close contact with the packaged object as a whole.

Therefore, when this shrink wrapping method is adopted, like the shrink wrapping body of the invention according to claim 2, the wrapping material made of the shrink film to which the tack label is adhered is used to shrink wrap the object to be wrapped. In the shrink wrap that has been subjected to the above, the heat shrinkage rate of the portion of the wrapping material that covers the wrapping material that forms the flat surface including the tack label can be suppressed to less than 20%. Therefore, even if shrink-wrapping is applied to the packaged object using the packaging material to which the tack label is attached in advance, when the packaging material is heat-shrinked, the tack label is peeled off from the packaging material or the tack label is attached. Wrinkles do not occur in the packaging material in the surrounding area and unevenness does not occur in the part where the tack label is attached. Even without a troublesome operation such adhering the tack labels in a separate step in the package, can be efficiently subjected to clean shrink wrapping to the packaging.

In particular, if this shrink wrapping method is adopted, it is possible to use a packaging material having a tack label attached to the inner surface side, so that the packaging material can be visually recognized from the outside. It is possible to obtain the shrink package of the invention according to claim 3, wherein the tack label is attached to the inner surface side of the material. In such shrink wrapping, for example, if the tack label is an instant lottery or a campaign sticker that is an entry ticket for a prize, be sure that the tack label such as the campaign sticker is attached. Compared to the case where a tack label such as a campaign sticker is affixed to the outer surface of the packaging material, it is possible to carry out mischief at the store such as peeling off only the tack label such as the campaign sticker without purchasing the product. The effect of being easy to prevent is obtained.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described below with reference to the drawings. As shown in FIG. 1, this shrink wrapping body 1 includes a shrink film (for example, a packaged body) 10 in a cup-shaped instant ramen (hereinafter, referred to as a packaged body) 10 in which contents such as instant ramen and medication are contained in a cup-shaped container. Two
A packaging material 20 formed of an axially stretched polypropylene film or the like is used for over-shrink packaging, and an inner surface of the packaging material 20 is covered with a campaign seal or the like on a portion that covers the top surface of the package 10. A tack label 30 is attached.

As shown in FIGS. 2 (a) and 2 (b), the packaging material 20 includes a base material 21 made of a transparent shrink film.
And a display print layer 22 formed on the back surface of the base material 21 for displaying a product name, a characteristic design, etc., and formed on substantially the entire surface of the base material 21 so as to cover the display print layer 22. And a solid print layer 23, but at least a top surface portion to which the tack label 30 is attached so that the tack label 30 attached to the inner surface of the packaging material 20 can be visually recognized from the outside. Includes a display print layer 22 and a solid print layer 2
A transparent window portion 20a without 3 is formed.

The tack label 30 is a campaign sticker that becomes an instant lottery, as shown in FIG.
As shown in (b), a label base material 31 formed of a plastic film such as polyethylene terephthalate or polypropylene, and a display such as "hit" or "off" laminated on one surface of the label base material 31. Is printed, the adhesive layer 33 is laminated on the other surface of the label base material 31, and the indication that it is a campaign sticker formed on the surface of the adhesive layer 33 is displayed. It is composed of the adhesive surface printing layer 34, and the packaging material 20 is provided via the adhesive layer 33 on which the adhesive surface printing layer 34 is formed.
It is attached to the transparent window portion 20a formed in the.

Therefore, in this shrink wrapping body 1, only the presence of the tack label 30 and the display of the adhesive surface printing layer 34 can be visually recognized from the transparent window portion 20a of the packaging material 20, and the purchaser of the product can see it. Unless the packaging material 20 is peeled off and the display print layer 32 of the tack label 30 is seen, it is impossible to know whether or not the lottery is hit.

The shrink wrapping body 1 configured as described above is manufactured as follows using the shrink wrapping device 2 shown in FIGS. 3 to 7. As shown in FIG. 3, this shrink wrapping device 2 has a wrapping portion 40 that wraps the packaged object 10 with the packaging material 20 described above, and a peripheral surface portion of the packaged object 10 that is wrapped with the packaging material 20 locally. The pre-heating unit 50 for heating the package to be packaged 20, the main heating unit 60 for heating the packaged body 10 wrapped by the packaging material 20 as a whole, and the packaged bag 10 along the predetermined transport path. ,
The transport unit 7 that sequentially transports the pre-heating unit 50 and the main heating unit 60.
0, and the transport unit 70 is configured as shown in FIGS.
As shown in FIG. 7, it is constituted by conveyors 71, 72, 73, 74.

As shown in FIG. 4, the wrapping section 40 continuously feeds the long strip-shaped wrapping material 20 from the wrapping material roll RL and feeds it to the wrapping position via the guide roller 41. Packaging material feeding means 42 and packaging material 2 fed to the packaging position
A former 43 for shaping 0 into a tubular shape, and this former 43
The center sealer 44 that forms the packaging material 20 into a tubular shape and the packaging material 20 that is formed into a tubular shape at regular intervals by heat-sealing the both side edges in the width direction of the packaging material 20 shaped into a tubular shape with each other. The long strip-shaped packaging material 20 fed from the packaging material roll RL is formed on the inner surface side at a predetermined position upstream from the packaging position. The tack label 30 is sequentially attached in the window 20a.

In the wrapping portion 40 constructed as described above,
After the packaged object 10 transported to the packaging position by the transport conveyor 71 is sequentially inserted into the packaging material 20 formed into a tubular shape by the former 43, and the packaging material 20 is center-sealed by the center sealer 44, Fusing sealer 45
By the fusing and sealing of the wrapping material 20 between the packaged objects 10 in sequence, the tack label 30 is positioned on the top surface portion of the packaged object 10 as shown in FIGS. Thus, the package 1a in which the packaged object 10 is wrapped with the packaging material 20 is formed. The package 1a formed in this manner is transferred to the preheating unit 50 by the conveyor 72.
Be transported to.

As shown in FIGS. 5 and 6, the preheating section 50 is provided in an open preheating zone Z1 through which the package 1a conveyed by the conveyer 73 passes, and the prepacking material is used. The pressing means 51 for pressing substantially the entire top surface of the packaged object 10 wrapped by 20 and the peripheral surface part of the packaged object 10 in the package 1a whose top surface part is pressed by the pressing means 51 is locally It is composed of a preheating means 55 for heating.

The holding means 51 is an endless holding belt 52 which is circulated around a driving pulley 53 and a driven pulley 54, which is circulated along a feeding path at the same speed as the feeding speed of the package 1a by the feeding conveyor 73. The holding belt 52 allows the package 1a to be conveyed while pressing the top surface portion of the package 10.

The holding belt 52 is provided in the opened preheating zone Z1 and the preheating means 55 is adapted to locally heat the package 1a. Although it is not easily heated by the preheating means 55, even if the portion of the holding belt 52 holding the top surface of the package 1a is heated by the preheating means 55 and the temperature rises, The length of the circulation path of the holding belt 52, that is, the belt length is increased so that heat can be surely released before returning to the heating area (holding area) from the area). 52 is always kept at a temperature lower than the heat shrinkage temperature of the packaging material 20.

The preheating means 55 is a conveyor 7
3 is provided with a plurality of nozzles 56 arranged vertically in two stages, and by blowing hot air of about 120 to 150 ° C. from the nozzles 56, the peripheral surface portion of the packaged object 10 in the package 1a is blown. It is designed to heat locally.

The main heating unit 60 is, as shown in FIGS. 5 and 7, a package 1 conveyed by a conveyor 74.
The tunnel 61 is provided in the main heating zone Z2 through which a passes and surrounds the main heating zone Z2, and the heater 65 and the circulation fan 6 installed in the tunnel 61.
6 and.

The tunnel 61, as shown in FIG.
An internal tunnel 62 that forms a heating space through which the package 1a passes, an intermediate tunnel 63 that surrounds the outside of the internal tunnel 62, and an external tunnel 64 that surrounds the outside of the intermediate tunnel 63 3 It has a heavy structure,
A plurality of heaters 65 are appropriately arranged in the air supply path SD partitioned by the inner tunnel 62 and the intermediate tunnel 63, and the intermediate tunnel 63 and the outer tunnel 6 are provided.
A circulation fan 66 is installed in the upper part of the return air passage RD partitioned by 4 and 4.

On the upper wall of the intermediate tunnel 63, the return air passage R
The circulation fan 66 installed in D allows the air supply path SD
An opening 63a is formed at a position corresponding to the circulation fan 66 so that air can be blown into the inner tunnel 62, and an air supply port 62a is formed in each of the upper wall, both side walls and the lower wall of the inner tunnel 62. At the same time, on the lower side of the internal tunnel 62, the internal tunnel 62 and the return air passage RD are connected via the communication passage CD.

Therefore, the circulation fan 66 is used to supply air to the air supply passage S.
The air supplied into D is heated to a predetermined temperature (150 to 170 ° C.) by the heater 65, and then is supplied from the air supply port 62a into the internal tunnel 62 through the air supply passage SD. The package 1a passing through the tunnel 62 is entirely heated. The heated air supplied into the internal tunnel 62 is returned to the circulation fan 66 through the communication passage CD and the return air passage RD.

As described above, this shrink wrapping device 2
Then, first, in the wrapping portion 40, the packaged object 1 is placed so that the tack label 30 is located on the top surface portion of the packaged object 10.
0 wrapped with a packaging material 20 (FIG. 8).
(A) and (b)), in the preheating unit 50, the holding belt 52 held at a temperature lower than the heat shrinkage temperature of the packaging material 20 holds the top surface portion of the object to be wrapped 10 while being packaged. When the peripheral surface part of the body 10 is locally heated, the part of the packaging material 20 that covers the top surface of the packaged object 10 hardly causes heat shrinkage, and FIG.
As shown in (d), the other part undergoes heat shrinkage and is preformed so as to substantially conform to the outer shape of the packaged body 10.

In the packaging material 20 thus preliminarily heat-shrinked, as shown in FIGS. 3C and 3D, both ends ep on the fusing seal side with a margin have a flange of the packaged object 10. Since both side parts sp that do not have enough space are wound around the part f and are substantially adhered to the flange part f, subsequently, in the main heating part 60, the top surface part of the packaged object 10 is opened. Even if the packaging material 20 is entirely heated, the portion of the packaging material 20 that covers the top surface of the packaged object 10 largely undergoes thermal contraction or is affected by the thermal contraction of other portions. However, in the packaging material 20, the heat shrinkage rate of the packaging material 20 is the portion formed on the flat surface including the tack label 30, that is, the top surface portion of the packaged object 10 where the tack label 30 is located. 6 in the longitudinal direction (feeding direction) of the packaging material 20 13%, in a state of suppressed was about 1-5% in the transverse direction of the packaging material 20 (the width direction), FIG. 1 and FIG. 8
As shown in (e), the packaging material 20 is entirely the packaged object 10.
Overshrink wrapping is applied in close contact with. In addition, the heat shrinkage rate of the packaging material 20 mentioned above is 1
It is a value measured in the central portion of the top surface of 0.

As described above, this shrink wrapping device 2
As a result, when the package 10 is subjected to overshrink wrapping, most of the portion of the packaging material 20 that covers the top surface of the package 10, that is, the portion to which the tack label 30 is attached, shrinks due to heat. Since it is not present, the over-shrink wrapping can be applied in a clean state in which the design or the like printed on the part is not distorted, and the tack label 30 attached to the part can be peeled off from the packaging material 20 or the tack label 30 Wrinkles are generated in the packaging material 20 at the peripheral portion,
There is no unevenness in the part to which the tack label 30 is attached, and as in the conventional case, a troublesome work such as attaching the tack label in a separate process to the shrink-wrapped packaged object is performed. Even if it does not exist, the packaging material 20 to which the tack label 30 is attached can be used to efficiently and cleanly package the packaged object 10 in a clean overshrink package.

In addition, the shrink package 1 in which the package 10 is thus overshrink-wrapped,
Since the tack label 30 is attached from the inner surface side to the transparent window portion 20a formed in the packaging material 20, it is possible to surely grasp that the tack label 30 that is the campaign sticker is attached. It is possible to effectively prevent mischief in the store such as peeling off only the tack label 30 which is a campaign sticker without purchasing a product.

In the above embodiment, the heat shrinkage rate of the packaging material 20 is 6 to 1 in the longitudinal direction of the packaging material 20 in the top surface portion of the packaged object 10 where the tack label 30 is located.
It is suppressed to about 3% and about 1 to 5% in the lateral direction of the packaging material 20, but it is not limited to this. However, packaging material 2
If the heat shrinkage of 0 is about 20%, the tack label 30
Does not come off from the packaging material 20, but tack label 3
Since a slight wrinkle may occur in the packaging material 20 in the peripheral portion of 0, the heat shrinkage rate of the packaging material 20 is 20% for the top surface portion of the packaged object 10 where the tack label 30 is located.
%, Preferably less than 15%, more preferably 10%
It should be kept below.

As shown in FIGS. 8 (a) and 8 (b), the package 1a in which the packaged object 10 is wrapped with the packaging material 20 before heat shrinkage has a certain degree in the front and rear fusing seal portions of the packaging material 20. In the preheating zone Z1, while pressing the top surface portion of the package 1a with the pressing belt 52,
Since the preheating is performed by blowing hot air from both sides of the transport path of the package 1a, the heat shrinkage of the part of the packaging material 20 at the front and rear sides in the transport direction of the package 1a is sufficient in the preheating stage. The heat shrinkage rate of the final packaging material 20 in the top surface portion of the packaged object 10 where the tack label 30 is located may not exceed 10% in the longitudinal direction of the packaging material 20.

Therefore, the package 1a is allowed to pass through the preheating zone Z in a state where the transporting position of the package 1a is rotated by 90 degrees so that the front and rear fused seal portions of the package 1a face the blowing direction of the warm air. While keeping the top surface of the package 1a held by the holding member held at a temperature lower than the heat shrinkage temperature of the packaging material 20, the package 1a is rotated together with the holding member while passing through the preheating zone Z1. When set to
In the preheating stage, the front and rear fusing seal portions having a margin in the packaging material 20 can be sufficiently heat-shrinked, so that the final packaging material 20 on the top surface portion of the packaged object 10 on which the tack label 30 is located is final. The overall heat shrinkage rate can be suppressed to 10% or less.

Further, in the above-mentioned embodiment, the tack label 30 is attached to the inner surface side of the packaging material 20, but the present invention is not limited to this, and for example, FIG.
As shown in (a), the tack label 30 can be attached to the outer surface side of the packaging material 20, and in that case, the transparent window in which the display print layer 22 and the solid print layer 23 are intentionally removed. It goes without saying that it is not necessary to form a part.

Further, in the above-described embodiment, the packaging material 20 in which the display print layer 22 and the solid print layer 23 are formed on substantially the entire surface of the base material 21 is used, but the present invention is not limited to this. It is also possible to use a packaging material 20 formed of a transparent shrink film having no printing layer, as shown in FIG.

Further, in the above-mentioned embodiment, the adhesive layer 33.
Although the tack label 30 having the adhesive surface printing layer 34 indicating that it is a campaign sticker is formed on the surface thereof, the tack label 30 is not limited to this, and for example, as shown in FIG. An adhesive layer 32a having transparency is laminated on one surface of the label base material 31a having the label base material 31a, and a display print layer 33a is printed on the other surface of the label base material 31a with an indication that it is a campaign sticker, It is also possible to use a tack label 30a in which an opaque solid print layer 34a and a display print layer 35a on which a display such as "hit" or "off" is printed are sequentially stacked, and a tack that becomes such an instant lottery. In addition to the label, it is also possible to use a tack label, which is an entry ticket for the prize.

In the above-described embodiment, the length of the pressing belt 52 is increased to improve the heat radiation efficiency of the pressing belt 52. However, the preheating zone Z
Since No. 1 is opened, it is not necessary to intentionally lengthen the holding belt 52 if the holding belt 52 hardly raises its temperature. Further, in the case where the length of the holding belt 52 cannot be increased in space, or in the case where the holding belt 52 cannot be kept at a temperature lower than the heat shrinkage temperature of the packaging material 20 only by natural heat radiation. It is also possible to positively dissipate heat by blowing air onto the pressing belt 52 with a cooling fan.

Further, in the above-described embodiment, the peripheral surface portion is locally heated while the top surface portion of the package 1a is pressed by the pressing belt 52 in the open preheating zone Z1. The preheating zone Z1 does not necessarily have to be opened as long as the holding belt 52 can be kept at a temperature lower than the heat shrinkage temperature of the packaging material 20.

Further, in the above-described embodiment, the holding belt 52 that circulates at the same speed as the conveying speed of the package 20 is used as the pressing means, so that the top surface of the packaged object 10 is pressed and the packaging is performed. Although the body 1a is conveyed, the present invention is not limited to this, and the top surface portion of the packaged body 10 is held by the plate-shaped pressing member while the package 1a is stopped in the preheating zone Z1. After locally heating the peripheral surface portion of the packaged object 10 while pressing, the packaged object 1
It is also possible to convey a to the main heating zone Z2.

Further, in the above-mentioned embodiment, the case where the cup-shaped instant ramen is subjected to the over-shrink wrapping has been described. The present invention is not limited to the case of applying, but can be applied to the case where shrink wrap is applied in whole or in part to an object to be wrapped of various shapes by using a packaging material to which a tack label is attached. Needless to say.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a shrink wrapping body according to the present invention.

FIG. 2 (a) is a cross-sectional view showing a packaging material used in the above shrink packaging body, and FIG. 2 (b) is a cross-sectional view showing a state where a tack label is separated from the above packaging material.

FIG. 3 is a schematic configuration diagram showing an embodiment of a shrink wrapping apparatus for carrying out the shrink wrapping method according to the present invention.

FIG. 4 is a schematic side view showing a wrapping portion in the above shrink wrapping apparatus.

FIG. 5 is a schematic side view showing a pre-heating unit and a main heating unit in the above shrink wrapping apparatus.

FIG. 6 is a schematic front view showing a preheating unit of the above.

FIG. 7 is a schematic sectional view showing a main heating unit of the above.

FIG. 8A to FIG. 8E are schematic diagrams showing changes in the state of the packaging material that wraps the packaged object.

9A and 9B are perspective views showing a shrink package according to another embodiment.

FIG. 10 is a cross-sectional view showing a modified example of the tack label.

FIG. 11 is a schematic view showing a conventional shrink wrapping device.

[Explanation of symbols]

1 Shrink packaging 1a Package 2 shrink wrapping equipment 10 Package 20 packaging materials 20a window 21 Base material 22 Display print layer 23 Solid printing layer 30, 30a tack label 31, 31a Label base material 32, 33a, 35a Display printing layer 33, 32a Adhesive layer 34 Adhesive surface printing layer 34a Solid printing layer 40 Wrapping part 50 Preheating section 51 Holding means 60 heating units 70 Transport section

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kaoru Takeo             5-3-18 Imazukita, Tsurumi-ku, Osaka             Company Fuji Seal F-term (reference) 3E067 AA11 AB01 BA07B BA18C                       BB14B BB16C BB18C BC07B                       CA01 EA06 EA29 EE04 FA04                       FB01 FC01

Claims (3)

[Claims] 1. A step of wrapping an object to be packaged wholly or partially with a packaging material made of a shrink film to which a tack label is attached in advance; The substantially entire region of the portion formed on the flat surface including the tack label is sandwiched between the packaged body and the packaging member by a holding member held at a temperature lower than the heat shrinkage temperature of the packaging material. A step of preliminarily heat-shrinking the material, and a step of heat-shrinking the packaging material as a whole in a state in which the holding member sandwiching the packaging material between the packaged object is removed Shrink packaging method. 2. A shrink wrapping body in which a wrapping material is shrink-wrapped by using a wrapping material made of a shrink film having a tack label attached, wherein the wrapping material covers the wrapping material, The shrink wrapping body is characterized in that the heat shrinkage rate of the portion forming the flat surface including the tack label is suppressed to less than 20%. 3. The shrink wrapping body according to claim 2, wherein the tack label is attached to an inner surface of the packaging material so that the tack label can be visually recognized from the outside.