JP2008152145A - Body label - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a body label that can be easily removed after use. <P>SOLUTION: The body label is so constituted that: a thermosensitive adhesive layer 20 is formed on both end parts of the rear surface of label base material; a lead part of the label is bonded to a container main body across the thermosensitive adhesive layer and the label is wound around the circumferential direction of the container; and the terminal part W' of the label and the lead part of the label are laminated via the thermosensitive adhesive layer. The shear strength of the label terminal part is ≥4N/15 mm on average, and a label peeling port 110 is formed on the label terminal part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a plastic bottle made of polyethylene terephthalate resin (hereinafter also referred to as “PET”), polypropylene resin, polyethylene resin and the like used for soft drinks, milk drinks, beer, wine, nutrition drinks, seasonings, cosmetics, and the like. The present invention relates to a body-wound label wound around the surface of a container such as a glass bottle, and a container with the label. More specifically, it has an adhesive strength that does not peel off during distribution, has excellent water resistance, has easy peelability that can be easily peeled off after use, and is suitable for recyclability such as separation and recovery. , And the labeled container.

  Traditionally, glass bottles and plastic bottles used for soft drinks, milk and milk beverages, beer, wine, seasonings, cosmetics, etc. have a printed label affixed to the container for the purpose of displaying contents, or for the purpose of shading It is used by covering the label with. As a method of attaching a label over the entire circumference of such a container, in addition to a method of externally attaching and attaching a label adhered in a cylindrical shape to the container, heat-sensitive adhesive such as an adhesive, a delayed tack adhesive, a hot melt adhesive, etc. It is known that an agent or the like is applied to the end of a label and is wound around and pasted on a barrel portion of a container. Since such a body-wound label can be prepared using a general-purpose resin as a base material, there is an advantage that it can be manufactured at low cost.

  With regard to containers equipped with such wrap-around labels, it has become practical to collect and reuse containers such as PET bottles from the viewpoint of environmental issues and resource recycling, and activities for smooth container recycling Has become active. For this reason, according to the Recycling Law “Independent Design Guidelines for Type 2 Designated PET Bottles” by the PET Bottle Recycling Promotion Council, when immersed in a cleaning solution of 1.5% alkali concentration at 85 to 90 ° C. for 15 minutes, The label is peeled off and the adhesive is required not to remain in the bottle. Furthermore, it is desirable that the label is peeled off when immersed in hot water of 85 ° C. for 15 minutes and the adhesive does not remain in the bottle.

  On the other hand, in recent years, a so-called universal design has been developed with the aim of designing so that as many people as possible can use, for example, forming different irregularities on each bottle to facilitate the discrimination between shampoo and rinse. Yes. The purpose of universal design is that it is easy to use and can be used fairly by anyone, has a high degree of freedom in use, can easily obtain necessary information and prevents accidental mistakes, has little burden on the body, This is because a sufficient space for use can be secured. For this reason, for example, when a bottle is collected and discarded in a general household, the label can be easily peeled off instead of the above-described separation with an alkaline solution or hot water, and the adhesive or the label residue remains in the bottle. A label that does not remain is preferable. For example, in the case of a labeled container in which a cylindrically formed label is externally fitted to the container, a label having a perforation formed in advance is used to facilitate peeling of the label after use. In the case of a container with a label attached via an agent, the adhesive may remain in the container when the label is peeled off.

  As such an easily peelable label, for example, a difficult-to-adhere layer is formed in advance on the back surface of the label, and a container-adhesive layer having adhesiveness is laminated on the hardly-adhesive layer. Thus, there has been proposed a label that can simultaneously satisfy the adhesiveness and peelability of the label to be attached to both ends of the label in a state where the label back surface is temporarily adhered to the peripheral surface of the container (see, for example, Patent Document 1). .

In addition, a heat-sensitive label that has a heat-sensitive adhesive on the entire back surface of the label base material and is applied in a pattern to change the coating amount has been proposed. For example, see Patent Document 2.)
JP 2000-238782 A JP 2001-134188 A

  However, since the label of Patent Document 1 uses two types of resins that form a hard-to-adhere layer and an adhesive layer, the number of colors printed on the pattern print layer is limited, resulting in poor design and formation of an adhesive layer. And two steps of forming a hard-to-adhere layer are required, resulting in high costs and inferior productivity.

  Further, the label of Patent Document 2 has a weak adhesive strength between the label and the label at the end of the label, and the label may easily fall off and peel off from the container during the distribution process of the labeled container. Also, if a container with a label is submerged in water, water will enter through the gap between the label / container in the adhesive-free area at the end, and the label will fall off the container, easily peel off, and have poor water resistance. There is. Thus, in the case of a body-wrapped label that is attached to a bottle via a heat-sensitive adhesive layer, the adhesive force between the label and the label is, for example, when the bottle is dropped during transportation and distribution, particularly in a low-temperature environment. However, the adhesive strength that the label is not easily peeled is required, but at the same time, easy peelability that can be easily peeled after use is required.

  Furthermore, from the viewpoint of universal design, when consumers actually peel off labels from bottles, they are easy to use and can be easily peeled off by both men and women of all ages. However, it is preferable that it can be peeled from any direction and has a high degree of freedom in use so that it can be implemented, but there has been no label designed from this point of view. In particular, the body-wound label is affixed to containers used for soft drinks, milk and milk beverages, beer, wine, seasonings, cosmetics, etc. There is a strong demand for peeling labels from bottles.

  In view of the above-mentioned present situation, an object of the present invention is to provide a body-wound label that can be easily peeled off from a bottle with a fingertip while securing shear strength as a body-wound label.

  In particular, an object of the present invention is to provide a body-wound label having a shear strength as a body-wound label and easily peelable, based on a universal design.

  As a result of detailed examination of the body-wound label attached to the container through the heat-sensitive adhesive, the present inventors have found that the label at the time of storage, transportation, and distribution can be obtained if the average shear strength of the label end is 4 N / 15 mm or more. It is possible to prevent peeling of the film and to ensure recyclability by providing a peeling opening at the end of the label. The peeling opening can be formed by a heat-sensitive adhesive non-formation area. It was found that the label can be easily peeled off from the container after use by making it easy to insert a finger into the shape of the heat-sensitive adhesive non-formation region formed on the part, and completed the present invention .

  That is, in the present invention, a heat-sensitive adhesive layer is formed on both ends of the back surface of a label substrate made of a synthetic resin film that is uniaxially or biaxially stretched, and the heat-sensitive adhesive layer is formed between the starting end of the label and the container body. In the body-wrapped label in which the label end portion and the label start end portion are overlapped with each other via a heat-sensitive adhesive layer, the label end portion has an average shear strength of 4 N / 15 mm. In addition, a body-wrapped label is provided in which a label peeling opening is formed at the end of the label.

  Further, the present invention provides a container with a body-wound label, characterized in that the body-wound label is affixed to the outer peripheral surface of the body portion of the container with the application surface of the heat-sensitive adhesive inside.

  The body-wrapped label of the present invention has a universal design for the peeling opening provided at the end of the label, so anyone can easily peel off the label from the container and can be used for containers of any application it can.

  Since the label peeling opening can be formed by the heat-sensitive adhesive non-forming region, it can be easily prepared by, for example, a gravure printing method, and the production of the label is easy.

  Since the label peeling opening is formed at the end of the label, the body-wrapped label of the present invention can be easily peeled off and is excellent in recyclability.

  Moreover, since the label end portion has an average shear strength of 4 N / 15 mm or more, sufficient adhesive strength for use can be ensured.

  Since the body-wound label of the present invention can be wound around a container and attached, the process of forming the label into a cylindrical shape is not required, the production process can be simplified, and the cost can be reduced. Moreover, since the body-wrapped label of the present invention has high adhesion stability, the body-wrapped label can be affixed to the container at high speed, and the production efficiency can be improved.

  In the present invention, a thermosensitive adhesive layer is formed on both end portions of the back surface of a label base material made of a synthetic resin film uniaxially or biaxially, and the start end portion of the label and the container main body are interposed via the thermosensitive adhesive layer. In the body-wrapped label in which the label is wound in the circumferential direction of the container and the label end portion and the label start end portion are overlapped via a heat-sensitive adhesive layer, the label end portion has an average shear strength of 4 N / 15 mm or more. And a label peeling opening is formed at the end of the label. The peeling opening can be formed by a heat-sensitive adhesive non-formation region at the label end portion.

  The heat-sensitive adhesive non-formation region may be formed in a label end portion, a linear shape, a wave shape, or may be formed in a label upper end portion and / or a lower end portion. Furthermore, it can also form in circular arc shape between a label upper end part and a lower end part, and you may form in multiple numbers at a label edge part. Hereinafter, the body-wound label of the present invention will be described.

(1) Constitution of body-wound label The body-wound label of the present invention is a body-wound label that is wound around and attached to the outer peripheral surface of a body of a container, and is the back surface of a label substrate made of a synthetic resin film uniaxially or biaxially stretched A heat-sensitive adhesive layer is formed on both ends of the film. In the case of the body-wrapped label of the present invention, a printed layer may be further laminated on the inner side of the synthetic resin film, and an outer layer may be laminated on the surface side of the synthetic resin film.

  FIG. 1 shows an example of a preferred embodiment of a cross-sectional view of the body-wound label of the present invention. The body-wrapped label of the present invention has two sticking portions, a label start end (W) and a label end end (W ′), for attachment to a container. FIG. 1 is composed of a synthetic resin film (10) and a heat-sensitive adhesive layer (20), and is thermally bonded to the label start end (W) and label end (W ′) inside the label of the synthetic resin film (10). In this embodiment, the agent layer (20) is formed. The heat-sensitive adhesive layer (20) is not formed at the label end of the label end portion (W '), and a peeling opening can be formed.

  The aspect which has a design printing layer (30) further in a synthetic resin film (10) is shown in FIG. In FIG. 2, the label start end part (W) and the label end part (W ′) are not provided with a print layer, and the heat-sensitive adhesive layer (20) is formed inside the label of the synthetic resin film (10). It has become.

  FIG. 3 shows an embodiment in which an outer layer (40) is further provided on the label surface of the synthetic resin film (10) of the body-wound label of FIG. The synthetic resin film (10) is not limited to a single layer and may be a laminated film having two or more layers.

  In the present invention, the size of the body-wrapped label can be appropriately selected according to the size of the container to be pasted. Similarly, the size of the affixing part to which the adhesive is applied can be appropriately selected according to the usage mode of the label applicator, for example.

(2) Shear strength In the case of the body-wrapped label of the present invention, the label start end (W) and the label end (W ′) are bonded by the heat-sensitive adhesive layer (20). The strength, that is, the shear strength between the labels, is an average of 4 N / 15 mm or more, more preferably an average of 6 to 180 N / 15 mm, and particularly preferably 10 to 60 N / 15 mm. If the shear strength is less than 4 N / 15 mm, it may be peeled off particularly in cold regions such as during storage, transportation and sales.

  A body-wound label may be peeled off particularly in a cold region such as when it is dropped, stored, transported, sold, etc., and the commercial value is lost due to the label peeling. When the adhesive strength of the label in such actual use was evaluated, the adhesive strength per 15 mm width of the label-label bonded with the heat-sensitive adhesive was calculated. In addition, it was proved that label detachment during container use can be prevented. Since the adhesive strength is proportional to the heat-sensitive adhesive application area, if the heat-sensitive adhesive layer (20) having a predetermined area can be formed, the shear strength can be secured even if the heat-sensitive adhesive non-formation region is formed at the same time. Since easy peelability can be realized by forming the region, in the present invention, the shear strength between the label and the label is an average of 4 N / 15 mm or more, and further, it is a wound label having a peeling opening. That is, even when the heat-sensitive adhesive non-formation region is formed, if the shear strength of 4 N / 15 mm or more can be secured on the average over the entire length of the label, it is possible to prevent the label from being detached during use and to ensure easy peelability. As specified. Therefore, for example, in the case of a label whose label vertical length is 84 mm, it is required to satisfy a shear strength of 82 mm × 4 N / 15 mm = 21.6 N or more.

(3) Peeling port In this invention, a peeling port is formed in the terminal part of a body winding label. As such a peeling port, it is preferable to form a heat-sensitive adhesive non-formation region in any one of the label end portions and to use this as the peeling port. The heat-sensitive adhesive non-formation region can be formed by forming a heat-sensitive adhesive layer by applying or printing the heat-sensitive adhesive in a predetermined pattern, and is easy to manufacture. It should be noted that the heat-sensitive adhesive non-formation region provided at the terminal end of the label does not necessarily become a peeling opening.

  FIG. 4A shows a front view of a container to which a body-wound label having such a heat-sensitive adhesive non-forming region is attached. If a heat sensitive adhesive non-formation region is formed in the upper end part (130) and the lower end part (140) of the label end part (W '), it can be made to function as a peeling opening (110) and pinch the peeling opening. Thus, the label can be easily peeled off. The front view of the label of the aspect affixed on the container at FIG.4 (b) is shown. A lower portion of the label end portion (W ′) is a label start end portion, and the label end portion (W ′) is pasted on the label start end portion via a heat-sensitive adhesive layer (20). The heat-sensitive adhesive non-formation regions in the label end portion (W ′) are in the label end portion (120), the label upper end portion (130), and the label lower end portion (140). In the present invention, the label end portion (W ′) is a wound label that forms a heat-sensitive adhesive layer (20) on both ends of the back surface of the label base material and is attached to the container via the heat-sensitive adhesive. , Refers to a region where a heat-sensitive adhesive layer can be formed in order to overlap and adhere to the upper surface of the label start end. Accordingly, the longest width (W1) of the label end portion is the difference between the circumference of the label attaching portion of the container and the label length wound around the container. Further, the label end portion (120) of the label end portion (W ′) means a label end portion in the region, and is a concept including a label upper end portion and a label lower end portion. In FIG.4 (b), the heat sensitive adhesive non-formation area | region of width (w2) is formed in the label edge part (120) from the label terminal part. The label upper end portion of the label end portion (W ′) is the upper end of the label end portion (W ′) when the label is attached to the container, and similarly, the label lower end portion of the label end portion (W ′) Is the lower end of the label end portion (W ′) when the label is attached to the container. In the present invention, the width (w1) of the label end portion (W ′) is preferably 4 to 30 mm, more preferably 6 to 18 mm from the label end portion. If it is the said range, both adhesive strength and easy peelability can be made compatible by formation of a heat-sensitive-adhesive non-formation area | region. In addition, label upper and lower length (L1) can be arbitrarily selected by the container to stick, and can respond | correspond to a 30-250 mm label in this invention.

  In the present invention, the heat-sensitive adhesive non-formation region is preferably formed at the label end (120) of the label terminal end (W '). A floating portion can be formed at the end of the label, and the label can be peeled off using this as a finger hook. Such a heat-sensitive adhesive non-formation region provided at the label end (120) may be linear or wavy. FIG. 5 shows a heat-sensitive adhesive non-formation region formed in a wave shape. In FIG. 5, a floating portion (w2) of at least 2 mm is formed from the end of the label, and a heat-sensitive adhesive non-formation region is formed in a wave shape so that the finger can be caught. The wavy peak-to-peak distance (w3) is preferably 8 to 20 mm, more preferably 9 to 19 mm, and particularly preferably 8 to 16 mm. The average width of a housewife's thumb is 18mm, and when checking the finger grip when pinching a label for the purpose of universal design, when the wavy shape in the above range is formed around 80% of 18mm, ie 14mm, the shape of the fingertip It was found that the end of the label can be easily lifted with a fingertip. The line (123) provided as the boundary of the label end (120) is preferably 0 to 12 mm, more preferably 2 to 12 mm from the label end. When forming a heat-sensitive-adhesive non-formation area | region in a label edge part, when less than 2 mm, a finger hooking function may fall. In the figure, the distance between the wavy peaks is 14 mm. The shape of the heat-sensitive adhesive layer in the width direction of the label is not particularly limited. In FIG. 5, the shape is formed in a straight line from the upper end of the label to the lower end, but is not limited thereto.

  Further, FIG. 6 shows that a peak portion (23) of the heat-sensitive adhesive layer is formed protruding from the line (123) at the label end portion to the label end side, and the heat-sensitive adhesive layer (20) side from the line (123). Fig. 5 shows a mode in which the peak portion of the heat-sensitive adhesive non-forming region (125) is formed to protrude. Although common to FIG. 5 in that a wavy heat-sensitive adhesive non-formation region is formed at the label end (120), if the area of the heat-sensitive adhesive layer at the label end (W ′) is the same, the heat-sensitive adhesive Considering that the shear strength is the same regardless of the shape of the non-formation region, the crest portion (23) of the heat-sensitive adhesive layer (20) and the crest portion of the heat-sensitive adhesive non-formation region (125) centering on the line (123). Are formed in a wave shape so as to have the same area, ensuring finger contact and improving the shear strength compared to the label of FIG. In FIG. 6, the distance between the wavy peaks is 10 mm, and the peak height is larger than that in FIG. 5.

  On the other hand, FIG. 7 shows a mode in which a heat-sensitive adhesive non-formation region is formed linearly at the end of the label. In FIG. 7, a triangular heat-sensitive adhesive non-formation region is formed in the label upper end portion (130) and the label lower end portion (140) in addition to the label end portion (120) in the same manner as the label in FIG. As described above, the width (w2) of the heat-sensitive adhesive non-forming region formed at the label end (120) is preferably 2 to 12 mm from the label end, but linearly at the label end. It may be difficult to ensure finger contact only by forming the heat-sensitive adhesive non-forming region. By forming a heat-sensitive adhesive non-formation region in at least one corner of the label upper end portion (130) or the label lower end portion (140), this can be used as a peeling port (110), and the label can be easily peeled off. it can. The width (w4) of the upper end portion of the label in the triangular heat-sensitive adhesive non-formation region is preferably 4 to 12 mm, more preferably 6 to 12 mm. Moreover, it is preferable that the length (L2) of the other side of the triangle of the heat-sensitive adhesive non-formation area | region extrapolated by the label edge part is 4-12 mm, More preferably, it is 6-12 mm. If it is the said range, the heat sensitive adhesive non-formation area | region of a label can be easily hold | gripped with a right hand or a left hand. In FIG. 7, the width (w4) of the label upper end portion of the triangular heat-sensitive adhesive non-formation region is 12 mm, and the length of the other side of the triangle of the heat-sensitive adhesive non-formation region extrapolated to the label end ( L2) is 10 mm. When a triangular heat-sensitive adhesive non-formation area is formed on the upper end of the label, if the label attached to the container has a long vertical length, even if a triangular heat-sensitive adhesive non-formation area of the same area is formed, the label The adhesive strength of is improved. The embodiment of FIG. 7 is particularly effective when the vertical length of the label is long.

  FIG. 8 shows a case where a heat-sensitive adhesive layer (25) is linearly formed in the triangular heat-sensitive adhesive non-formation region in parallel with the long side of the triangle, and the adhesive strength is improved as compared with FIG. be able to. Thereby, it is possible to easily achieve both adhesive strength and easy peelability regardless of whether the label is vertically long or short.

  9 shows that the width (w4) of the label upper end of the triangular heat-sensitive adhesive non-formation region is 4 to 12 mm, and the length of the other side of the triangle of the heat-sensitive adhesive non-formation region extrapolated to the label end ( The label edge length (L2) of the heat-sensitive adhesive non-formation region is 6 to 12 mm. Compared with FIG. 7, the width (w4) of the label upper end portion of the triangular heat-sensitive adhesive non-formation region is shortened, and the heat-sensitive adhesive layer (20) is relatively widely formed at the upper end of the label end portion. . As described above, when the vertical length of the label is increased, the adhesive strength of the label is improved even when a triangular heat-sensitive adhesive non-formation area having the same area is formed. The embodiment of FIG. 9 is particularly effective when the vertical length of the label is short, and it is possible to improve the adhesive strength by forming a wide heat-sensitive adhesive layer (20) at the upper end portion of the label end portion (W ′). And by forming a heat-sensitive adhesive non-formation region at the label end (120), easy peelability of the label can be ensured.

  In the present invention, the heat-sensitive adhesive non-formation region may be formed only at the upper end portion and / or the lower end portion of the label. This is because even if the label edge portion does not have a heat-sensitive adhesive non-formation region, the label can be easily peeled off using the heat-sensitive adhesive non-formation region provided at the upper end and / or lower end of the label as a trigger. .

  FIG. 10 shows a state in which a heat-sensitive adhesive non-forming region having a predetermined roundness is formed on the upper end portion (130) of the label. As described above, the average width of the thumbs of housewives is 18 mm. When the roundness (R) when pinching the upper end of the label for the purpose of universal design is confirmed, R is 6 to 12 mm, preferably 7 to 11 mm. It was found that the label edge portion was easily lifted by the fingertip in conformity with the shape of the fingertip. Therefore, easy-peelability was ensured by forming a heat-sensitive adhesive non-formation region in which the circle of the diameter (R) can be included in the label upper end portion (130) and / or the label lower end portion (140). Therefore, it is preferable that the width (w4) of the label upper end portion (130) in the heat-sensitive adhesive non-forming region is R + 4 to 12 mm. Moreover, it is preferable that the length (L2) of the heat-sensitive adhesive non-formation area | region of a label edge part (120) is R + 6-12 mm, More preferably, it is R + 8-10 mm. Since the label end portion width (w1) is 4 to 18 mm, the heat sensitive adhesive layer (20) can be formed on any one of the upper end portions (130) of the label end portion within the above range. Is secured. As described above, the adhesive strength of the label varies depending on the vertical length of the label, but the above aspect is particularly suitable when the vertical length of the label is long.

  FIG. 11 shows an embodiment in which a circle having R of 6 to 12 is present in the heat-sensitive adhesive non-forming region and a circular adhesive layer (26) is formed in the heat-sensitive adhesive non-forming region. When the label vertical length (L1) is short, the label adhesive strength may be difficult, and the adhesive strength can be improved by forming a circular adhesive layer (26). In addition, it is excellent at the point which can adjust adhesive strength easily by adjusting circular size. Such an adhesive layer (26) is not limited to a circular shape, and may be a hook shape or other shapes as shown in FIG.

  FIG. 13 shows a mode in which a weak adhesive layer (27) having a reduced adhesive strength is formed along the R in the heat-sensitive adhesive non-formation region where the R is 4 to 18, thereby improving the adhesive strength. Such a weak adhesive layer (27) can be easily prepared by changing the adhesive concentration, using an adhesive having a different adhesive strength, or changing the application of the adhesive to a halftone dot or the like. .

  Next, another embodiment in which the heat-sensitive adhesive non-formation region is formed at the upper end portion and / or the lower end portion of the label is shown in FIG. FIG. 10 shows a peeling portion having a predetermined range of R, but FIG. 14 shows that the upper end width (w4) is 4 to 12 mm, the label end length (L2) is 4 to 20 mm, and the label end length (L2). > Label upper end width (w4) and not limited to R. When peeling the label, the peeler tends to pinch the label in the form of putting the thumb vertically from the top at the corner of the label, ensuring easy peelability by making the heat-sensitive adhesive non-formation area into a vertically long shape. It turned out to be possible.

  FIG. 15 is a mode in which the upper end width (w4) and the label end length (L2) are both 4 to 16 mm, and a heat-sensitive adhesive non-formation region formed by a part of two circles of R6 to 10 mm is provided. is there. When peeling the label, the peeler may pinch the thumb from the vertical or pinch from the side, and point to the non-heat-sensitive adhesive area so that it can be handled from either direction. Two semi-circular heat-sensitive adhesive non-forming regions corresponding to the shape were provided.

  In the present invention, in addition to the heat-sensitive adhesive non-formation region formed at the upper end and / or the lower end of the label, a heat-sensitive adhesive non-formation region further formed in an arc shape is provided between the label upper end and the lower end. You may do it. For example, FIG. 16 shows an arc-shaped heat-sensitive adhesive non-formation region formed at the upper and lower ends of the label, and a heat-sensitive adhesive non-formation region further formed in an arc shape between the upper and lower ends of the label. The aspect by which is formed is shown. When peeling from the label end such as the upper end or the lower end of the label, the direction in which the force is applied changes according to the movement of the peeled portion of the label. When a heat-sensitive adhesive non-formation region is formed in such a direction where the direction of the force is changed, an excessive force applied to the label can be eliminated, and the label can be peeled more easily. In FIG. 16, an arc-shaped heat-sensitive adhesive non-formation region (127) is formed in the approximate center between the upper end and the lower end of the label, but is limited to the approximate center between the upper end and the lower end of the label. However, it can be appropriately selected from the width of the label end portion and the shape of the heat-sensitive adhesive non-formation region provided at the upper end of the label. In addition, if the heat-sensitive adhesive non-formation region provided at the end of the label is formed in an arc shape, the direction of force can be changed even if the label is peeled off from either the upper end or the lower end of the label. This is because it can be easily performed, and similarly to the case shown in FIG. 5, depending on the shape of the arc, it becomes a finger hook, and the label can be peeled off from the arc-shaped heat-sensitive adhesive non-formation region. It should be noted that a plurality of arc-shaped heat-sensitive adhesive non-forming regions corresponding to the force change points at the time of peeling can be provided at the end of the label. Thereby, it is not limited to the vertical length of the label, and easy peelability can be secured. This aspect is shown in FIG.

  In the present invention, a plurality of the heat-sensitive adhesive non-formation regions may be formed at the end of the label. The width of the thumb of the housewife is 18 mm on average, and when checking the finger grip when pinching the label for the purpose of universal design, when a semicircular heat-sensitive adhesive non-formation area having a diameter of 4 to 25 mm is formed at the end of the label, With this as a finger hook, the label can be easily peeled off. FIG. 18 is provided with a plurality of such semi-circular heat-sensitive adhesive non-formation regions (127), and there is an advantage that a place where a finger is caught can be arbitrarily selected. On the other hand, when a plurality of semi-circular heat-sensitive adhesive non-formation regions are formed, the peel strength decreases at the semi-circular location, so the label is in the vertical direction, that is, from the label upper end to the lower end, or from the label lower end to the upper end. The peel strength toward the part is not constant. In FIG. 5, the heat-sensitive adhesive layer on the label side of the label end portion is linearly formed. However, when a plurality of semi-circular heat-sensitive adhesive non-formation regions are formed, the semi-circular-semi-circular region is placed behind the semi-circular region. By forming the circular heat-sensitive adhesive non-formation region (127), it is possible to ensure a constant peel strength in the label vertical direction.

(4) Synthetic resin film In the present invention, the label base material layer made of the synthetic resin film constituting the body-wound label according to the present invention is a base material made of a synthetic resin film that is uniaxially or biaxially stretched, and Any film can be used as long as it has heat resistance, and it is preferable to use a film having mechanical, physical, chemical strength and printability. Such a film can be appropriately selected depending on the use of the body-wound label.

  For example, polyester film such as polyethylene terephthalate film, polystyrene film, polypropylene film, polyamide film such as 6 nylon film, 6,6 nylon film, low density polyethylene film, medium density polyethylene film, high density polyethylene film, low density linear Polyethylene film such as polyethylene film, cyclic polyolefin film, polystyrene film, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, etc. Polyolefin film formed from resin, modified polyolefin film formed from resin such as chlorinated polyethylene, chlorinated polypropylene, vinyl chloride Film formed as a film of a resin acid vinyl copolymer, an acrylic resin film or the like can be used.

  Further, these films may be laminated and used as a laminated film having two or more layers.

  The above film is a single layer using one or more kinds of resins constituting it, and using a film forming method such as extrusion method, cast molding method, T-die method, cutting method, inflation method, etc. Film-formed, multi-layered by co-extrusion using two or more types of resin, or formed by mixing two or more types of resin, and the tenter method or tubular method 1 Various resin films formed by stretching in the axial direction or biaxial direction can be used.

  Furthermore, various additives such as lubricants, fillers, heat stabilizers, antioxidants, ultraviolet absorbers, antistatic agents, flame retardants, and colorants are added to the above synthetic resin film as necessary. Also good. Further, the surface of the synthetic resin film may be subjected to conventional surface treatment such as corona discharge treatment, plasma treatment, flame treatment, and acid treatment in order to improve printability.

  The thickness of the film is preferably about 10 to 100 μm. Among these, a stretched polypropylene film (hereinafter also referred to as “OPP film”) and a biaxially stretched polyethylene terephthalate film (hereinafter also referred to as “PET film”) that are particularly excellent in heat resistance can be preferably used.

(5) Heat-sensitive adhesive layer In the present invention, a heat-sensitive adhesive can be used as the heat-sensitive adhesive layer constituting the body-wrapped label.

  Thermally sensitive adhesives include those that are solid at room temperature (hot melt adhesives) and those that are liquid (delay tack adhesives).

  Hot melt adhesives need to be melted at a high temperature at the time of application, and have a high viscosity. On the other hand, a delayed tack adhesive does not need to be heated at the time of application and has a low viscosity. As the delayed tack-type heat-sensitive adhesive used in the present invention, those formed from a base polymer comprising a thermoplastic resin component, a tackifier, and a crystalline solid plasticizer are suitably used. Thus, the delayed tack-type heat-sensitive adhesive according to the present invention is not sticky at room temperature, and is sticky when heated to 60 ° C. or more, and this stickiness persists for one day to several years after cooling. is there.

  In addition, the adhesive has a property of being dissolved when it comes into contact with an alkaline aqueous solution, resulting in a decrease in adhesive strength.

  The thermoplastic resin of the heat-sensitive adhesive according to the present invention serves as a base for the pressure-sensitive adhesive and is compatible with the plasticizer, thereby obtaining cohesive force during use.

  Moreover, it is alkali-soluble resin, and when peeling a label by this, it can also peel easily by an alkali treatment.

  For example, acrylic acid esters such as methyl acrylate, ethyl acrylate, acrylic acid-isopropylene, isobutyl acrylate, n-butyl acrylate, amyl acrylate, hexyl acrylate, 2-ethylhexyl acrylate, and methacrylic acid esters , Acrylic acid ester copolymers such as copolymer resins made of unsaturated carboxylic acids such as acrylic acid and maleic acid, styrene-acrylic acid esters, styrene-butadiene and the like. Among these, the self-crosslinking acrylic ester copolymer is suitable for the heat-sensitive adhesive label of the present invention because it has the property of improving water resistance upon heating.

  As the solid plasticizer of the heat-sensitive adhesive according to the present invention, the resin is not plasticized at a melting point or lower, is in a crystalline state, melts by heating and is compatible with the resin to swell or soften the resin. Then, it becomes a non-adhesive anti-blocking agent and has a function of becoming adhesive when heated. For example, diphenyl phthalate, dihexyl phthalate, dicyclohexyl phthalate, dihydroabiethyl phthalate, dimethyl isophthalate, sucrose benzoate, ethylene glycol dibenzoate, trimethylol ethane tribenzoate, glyceride tribenzoate, And tetrabenzoic acid pentaerythritol, octaacetic acid sucrose, tricyclohexyl citrate, and N-cyclohexyl-p-toluenesulfonamide. Thus, those having a melting point of about 50 to 100 ° C. can be preferably used. If the melting point is 50 ° C. or lower, the adhesive may be activated during storage of the label, and storage and transportation before use become severe, which is not preferable. On the other hand, when the melting point is 100 ° C. or higher, the efficiency for activating the adhesive layer of the label deteriorates, which is not preferable.

  The heat-sensitive adhesive tackifier that can be used in the present invention has an action of improving the pressure-sensitive adhesive performance of the pressure-sensitive adhesive. Examples of such tackifiers include terpene resins, aliphatic petroleum resins, aromatic petroleum resins, coumarone-indene resins, styrene resins, phenol resins, terpene-phenol resins, rosin derivatives (rosins, polymerized rosins). Hydrogenated rosin and esters thereof with glycerin, pentaerythritol, etc., resin acid dimers, etc.).

The solid plasticizer, thermoplastic resin and tackifier are an emulsion in which thermoplastic resin particles (solid particles or droplets) are emulsified and dispersed in water, or the thermoplastic resin is dissolved or dispersed in an organic solvent. These can be used alone or in a mixture of two or more.
In addition, the properties of pigments, fillers, fluorescent additives, flow and leveling additives, wetting agents, surfactants, antifoaming agents, rheology modifiers, stabilizers, antioxidants, etc. are impaired as necessary. You may include in the range which is not.

  In the present invention, an anchor coat layer can be provided in order to improve the adhesion between the printing ink layer and the heat-sensitive adhesive layer. Examples of such an anchor coat include non-curing or curable anchor coating agents such as polyolefin, organic titanate, polyethyleneimine, polybutadiene, isocyanate, polyester, and acrylic. The anchor coat layer can be formed by a gravure coat method, a roll coat method, or a reverse roll coat method. The anchor coat layer may be provided as necessary.

  As the heat-sensitive adhesive used in the present invention, it is preferable to use an acrylic heat-sensitive adhesive. The thickness of the heat sensitive adhesive layer is preferably 0.5 to 45 μm.

  By using the above-mentioned heat-sensitive adhesive, the body-wrapped label of the present invention has an average peeling strength between the labels, that is, a shear strength between the ends of the labels on which both ends of the label are overlapped, on average 4 N / 15 mm or more. Preferably, it can be 6 to 180 N / 15 mm. Moreover, the shear strength between the label and the container is 3 to 60 N / 15 mm, more preferably 5 to 40 N / 15 mm. The peel strength at that time is 0.5 to 50 N / 15 mm between the label and the label, more preferably 0.5 to 30 N / 15 mm, and 0.5 to 20 N / 15 mm between the label and the container, more preferably 0. 5 to 15 N / 15 mm.

(6) Design printed layer In the present invention, the body-wrapped label according to the present invention may have a printed layer, and the figure, characters, symbols may be entirely or partially on the entire surface of the base material layer made of a synthetic resin film. Etc. can be formed.

  There is no limitation in the printing method, for example, a printing layer can be formed by gravure printing. As the printing layer, one or more ordinary ink vehicles are prepared from a resin and a solvent, and if necessary, a plasticizer, a stabilizer, an antioxidant, a light stabilizer, an ultraviolet absorber, and a curing agent. 1 to 2 or more kinds of auxiliaries such as additives, crosslinking agents, lubricants, antistatic agents, fillers, etc. are optionally added, and further colorants such as dyes and pigments are added, and solvents, diluents, etc. The ink composition obtained by sufficiently kneading and adjusting the ink composition can be used.

  As such an ink vehicle, known ones such as sesame oil, drill oil, soybean oil, hydrocarbon oil, rosin, rosin ester, rosin modified resin, shellac, alkyd resin, phenolic resin, maleic resin, Natural resin, hydrocarbon resin, polyvinyl chloride resin, polyacetic acid resin, polystyrene resin, polyvinyl butyral resin, acrylic or methacrylic resin, polyamide resin, polyester resin, polyurethane resin, epoxy resin, urea resin , Melamine resin, amino alkyd resin, nitrocellulose, ethyl cellulose, chlorinated rubber, cyclized rubber, etc. can be used alone or in combination. The ink vehicle serves to carry the colorant from the plate to the substrate and fix it as a coating. In addition, as ink used for a printing layer, the commonly used ink which has adhesiveness with the base material layer which consists of a synthetic resin film, and has required tolerance can be used.

  Further, the drying property of the ink varies depending on the solvent. The main solvents used in printing inks are toluene, MEK, ethyl acetate, and IPA. Solvents with a low boiling point are used for quick drying. However, if the drying is too fast, the printed matter may be faded or printing may not be successful. Yes, a solvent having a high boiling point can be appropriately mixed. This makes it possible to print fine characters neatly. Colorants include dyes that are soluble in solvents and pigments that are insoluble in solvents, and gravure inks use pigments. Pigments are classified into inorganic pigments and organic pigments. Examples of inorganic pigments include titanium oxide (white), carbon black (black), and aluminum powder (gold and silver), and organic pigments are preferably azo. be able to.

  Although the above was demonstrated by gravure printing, printing systems, such as letterpress printing, screen printing, transfer printing, flexographic printing, etc., may be sufficient. The printing may be back printing or front printing.

  In the present invention, it may be formed on either the inner or outer side of the base material layer in a state of being attached to the bottle, but in this embodiment, it is formed on the inner side of the base material layer. In this case, the label inner side of the synthetic resin film is not limited to the case of being formed in contact with the synthetic resin film, and may be the innermost layer as long as it is inside the label from the synthetic resin film.

  In the present invention, a printed layer may be formed over the entire length of the body-wrapped label, and a design printed layer may not be provided in the heat-sensitive adhesive layer.

  In the present invention, the thickness of the print layer is, for example, about 1 to 8 μm, preferably about 2 to 5 μm.

(7) Outer layer The body-wrapped label of the present invention may further include an outer layer on the surface side of the synthetic resin film. As such an outer layer, it can be appropriately selected depending on the use and design properties of the body-wound label, and when giving the label surface slipperiness, OP varnish, when giving the tactile feeling when touching the label In the case of using a suede ink, it is preferable to use a matte OP or the like when giving a matte feeling. The outer layer may be a printed layer, or the outer layer may be a laminate composed of two or more layers such as a printed layer and another layer. In particular, when a printed layer is formed outside the base material layer, it is desirable to provide an overcoat layer formed of a transparent varnish or the like in order to protect the formed printed layer.

(8) Surface Treatment In the present invention, prior to the formation of any layer of the above-described body-wrapped label, another layer may be formed or laminated after performing a surface treatment in advance. Such surface treatments include corona discharge treatment, ozone treatment, low temperature plasma treatment using oxygen gas or nitrogen gas, glow discharge treatment, oxidation treatment using chemicals, etc., and other pretreatments, etc. is there. In addition, as such a surface treatment, a primer coating agent, an undercoat agent, an anchor coating agent, an adhesive, an evaporation anchor coating agent, or the like may be arbitrarily applied to perform the surface treatment.

(9) Method for producing body-wound label When the body-wound label of the present invention has a design print layer on the inner side of the label of the synthetic resin film and an outer layer on the outer side of the label of the synthetic resin film, the design print layer or It is convenient to form an outer layer and then form a heat-sensitive adhesive layer on the pasting part. The outer layer can be formed by forming a design printing layer on the synthetic resin film, inverting it, and printing with, for example, OP varnish.

  In the case of the body-wrapped label of the present invention, the heat-sensitive adhesive layer can be formed by a roll coater method using an direct roll or a gravure roll, an extrusion coater method, a slit orifice coater method, etc. There is no problem even if it is a construction method, and the solvent may be removed after dissolving and coating in a solvent. For example, in order to form a heat-sensitive adhesive layer on the affixed part of a body-wrapped label, a heat-sensitive adhesive layer is formed by a gravure printing method on a laminated film in which a design printing layer and an outer layer are previously formed on a synthetic resin film, and the label original fabric is formed. It can be. Further, instead of the gravure printing method, a method of applying a heat-sensitive adhesive using an adhesive coater or an adhesive applicator can be employed.

  The delayed tack type heat-sensitive adhesive in which the base polymer comprising the thermoplastic resin component, the tackifier, and the solid plasticizer are dispersed in a solvent is a gravure coating method, a roll coating method, a reverse roll in an emulsion state. Apply to the entire surface of the surface on which the printed layer of the substrate is formed using a means for applying a normal heat-sensitive adhesive such as a coating method, a lip coating method, a knife coating method, etc. Then, a heat-sensitive adhesive layer is formed, and for example, a label for a synthetic resin bottle can be produced by drying at a temperature of 40 to 60 ° C.

  In the present invention, the heat-sensitive adhesive layer may be formed by cutting the body-wrapped label roll into a predetermined size and then forming the heat-sensitive adhesive layer, or after forming the heat-sensitive adhesive layer and cutting into a predetermined size. Also good.

(10) Container There is no particular limitation on the container to which the body-wound label of the present invention can be attached, and any resin that can be bonded by the above-described adhesive may be used. Therefore, the adherend to which the body-wound label of the present invention is applied includes: glass containers; synthetic resin containers such as PET; inorganic containers such as ceramic bottles; metal containers such as aluminum, iron, and SUS; glass and synthetic resins. There are containers made of composite materials including ceramic, metal, paper and the like.

  On the other hand, when the container is a synthetic resin container, it is lightweight to use a polyester resin as the thermoplastic resin layer constituting the container, and the mechanical strength, heat resistance, gas barrier property, It is preferable because it is excellent in chemical properties, aroma retention, hygiene and the like. The container can be manufactured by injection molding, vacuum forming, pressure forming or the like of polyester resin.

  Specifically, as the polyester resin, a thermoplastic resin composed of a saturated dicarboxylic acid and a saturated dihydric alcohol can be used. Saturated dicarboxylic acids include terephthalic acid, isophthalic acid, phthalic acid, naphthalene-1,4- or 2,6-dicarboxylic acid, diphenyl ether-4,4'-dicarboxylic acid, diphenyldicarboxylic acids, diphenoxyethanediethanedicarboxylic acids Aromatic dicarboxylic acids such as adipic acid, sebacic acid, azelaic acid, decane-1.10-dicarboxylic acid and other alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid, and the like can be used. As the saturated dihydric alcohol, aliphatics such as ethylene glycol, propylene glycol, trimethylene glycol, tetramethylene glycol, diethylene glycol, polyethylene glycol, polypropylene glycol, polytetramethylene glycol, hexamethylene glycol, dodecamethylene glycol, neopentyl glycol, etc. Glycols, alicyclic glycols such as cyclohexanedimethanol, 2,2-bis (4′-β-hydroxyethoxyphenyl) propane, other aromatic diols, and the like can be used. A preferred polyester is polyethylene terephthalate composed of terephthalic acid and ethylene glycol.

  As the polyester resin, those having an intrinsic viscosity in the range of 0.5 to 1.5 can be used, and those in the range of 0.55 to 0.85 are preferably used. In addition, such polyester is produced by melt polymerization and is subjected to a reduced pressure treatment or an inert gas atmosphere at a temperature of 180 to 250 ° C., or an oligomer or acetaldehyde which is a low molecular weight polymer by solid phase polymerization. What reduced content of is preferable.

  The container according to the present invention may be a single layer of the above thermoplastic resin layer, but may have a multilayer structure in order to ensure gas barrier properties and light shielding properties.

  As the gas barrier resin layer, those having excellent gas barrier properties such as oxygen and carbon dioxide, such as copolymer polyester resin, polyamide resin, ethylene vinyl alcohol copolymer resin (hereinafter also referred to as “EVOH”), polyglycolic acid (hereinafter “ PGA "), high nitrile resin, polyacrylonitrile, copolymer of acrylonitrile, methyl acrylate and butadiene (trade name: Barex), polyvinyl chloride, nylon MXD6 consisting of metaxylylenediamine and adipic acid, polyethylene isophthalate Copolymers and various liquid crystal polyesters can be used. More specifically, B010 (copolyester resin manufactured by Mitsui Pet Resin Co., Ltd.), MX nylon (polyamide resin manufactured by Mitsubishi Gas Chemical Co., Ltd.), XYDAR (manufactured by Dartco), VECTRA (manufactured by Celanese Polyplastics), Econol (manufactured by Sumitomo Chemical), rod run (manufactured by Unitika), EPE (manufactured by Mitsubishi Kasei), X7G (manufactured by Eastman), ULTRAX (manufactured by BASF) and the like.

In addition, as a material excellent in both gas barrier properties and moisture barrier properties, a blend polymer of a polyethylene copolymer (PETG) composed of terephthalic acid, ethylene glycol and cyclohexanedimethanol and an ethylene vinyl alcohol copolymer, or the above PETG and polyvinyl A blend polymer with alcohol can be used.
Among them, nylon MXD-6 can block oxygen and capture oxygen by adding a catalytic amount of a transition metal compound, so that oxygen in the bottle container can be substantially zero. The content is preferable in that it has excellent antioxidant properties.

The transition metal catalyst added to the nylon MXD-6 is necessary to increase the reactivity with oxygen. Specifically, for example, cobalt, manganese, nickel, copper, rhodium, ruthenium, etc. can be used. It is preferred to use cobalt.
The above transition metals are usually used in combination with carbonates, sulfites, thiosulfates, tertiary phosphates, secondary phosphates, organic acid salts, halides, etc., among which 2-ethylhexane It is preferred to use transition metal salts such as cobalt acid, cobalt neodecanoate, cobalt stearate and the like.

  The added amount of the metal salt is preferably about 0.001% to 1% with respect to the resin composition.

  In order to obtain a container having a function of capturing oxygen, for example, in addition to the above MXD-6 nylon, a polybutadiene, a polyisoprene polyolefin resin, a diol resin such as glycol or polybutadiene diol, and a transition metal are used. Added resin composition and reducing and insoluble in water, for example, alkaline earth metal hydroxides, sulfites, carbonates, ascorbic acid and other organic acid salts can be used. Depending on the above, the above-described sensitizer can be used. Specific examples of the sensitizer include, for example, benzophenone, o-methoxybenzophenone, acetophenone, o-methoxyacetophenone, acenaphthenequinone, methyl ethyl ketone, valerophenone, hexanophenone, α-phenylbutyrophenone, p-morpholinopropiophenone, Dibenzosuberone, 4-morpholinobenzophenone, benzoin, benzoin methyl ether and the like can be used.

  Moreover, said gas barrier resin layer can contain resin which comprises said thermoplastic resin layer. This has the advantage that the interlayer adhesion between the thermoplastic resin layer and the gas barrier resin layer can be improved.

  Furthermore, in this invention, you may contain the light absorber which absorbs ultraviolet light in the resin of the thermoplastic resin layer and gas barrier resin layer which comprise the said container. Furthermore, additives such as lubricants, stabilizers, antioxidants, anti-thermal degradation agents, antistatic agents, antibacterial agents and other resins and other resins are added to the resin forming the container as long as the object of the present invention is not impaired. be able to. In addition, it is preferable that the said gas barrier layer is 5 mass% or less with respect to the weight of a thermoplastic resin. When it exceeds 5 mass%, the use of the recycled PET resin in the container is limited, which is not preferable.

  An inorganic oxide vapor deposition layer may be laminated on the inner side of the container used in the present invention in order to further secure light shielding properties and gas barrier properties. It is preferable because it has excellent oxygen gas barrier properties and water vapor barrier properties, can suppress the eluate from the resin constituting the container, has excellent fragrance retention, and can maintain the quality of the filling for a long period of time. The thin film can be formed by chemical vapor deposition.

  Furthermore, for example, a polyester resin such as polyethylene terephthalate (hereinafter also referred to as “PET”), a plastic bottle such as a polypropylene resin or a polyethylene resin, a glass bottle, or the like can be suitably used. Among these, PET bottles have recently been actively recycled by separating and collecting containers.

  In the present invention, the cap body attached to the mouth portion needs to have heat resistance, pressure resistance, water resistance, and light shielding properties. Specifically, the cap body is, for example, polyethylene resin, polypropylene resin, polystyrene resin, polycarbonate resin, polyester resin, polyamide resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile- It can be manufactured using an injection molding method or the like using a resin having high heat resistance such as a styrene-butadiene copolymer (ABS resin), a polyacetal resin, and the like. In the above, a cap or the like provided with an annular body having a pilfer loop function may be used. Also in this case, it can be manufactured by using an injection molding method or the like using a resin as described above, using a molding die or the like matching the shape. In addition, the cap is made of a metal such as aluminum or a plastic having a structure in which an oxygen gas barrier resin layer is provided on the inner surface side of the resin layer rich in heat resistance in order to impart oxygen gas barrier properties. A cap can be used. The specification of the plastic cap may be a one-piece specification in which an oxygen gas-absorbing resin layer is formed on the inner surface of the cap by in-shell molding, or a sheet having the same function, a so-called liner, is bonded to the inner surface. A two-piece specification may be used.

  As the shape of the container, the container cross section of the body-wound label adhering portion of the body portion is not limited to a round shape, and may be a polygonal shape such as a square or an octagon, but the body-wound label affixing portion is preferably flat. .

(11) Manufacturing method of container with body-wound label When a label according to the present invention produced in this way is attached to a container, the label is first heated and subjected to delayed tack bonding using a generally used labeling machine. The adhesive layer made of the agent is activated. Next, the label is pressed and attached to the synthetic resin bottle while the whole container is heated by hot air, steam, and steam heated by steam, steam, high-frequency seal, and radiant heat such as infrared rays. Can do. Alternatively, the label attached to the synthetic resin bottle may be pressed with a hot plate or the like.

  Further, the step of heating the label can be performed at an appropriate stage among the step before attaching the label to the bottle or the step of attaching the label to the bottle. As a result, the label is brought into close contact with the synthetic resin bottle in a state where the adhesive layer of the label is activated by reheating with hot air from a heater at about 90 to 100 ° C., for example, and a label-attached synthetic resin bottle is obtained.

  Moreover, the label concerning this invention manufactured as mentioned above is excellent in adhesion persistence.

  In the present invention, the container with a label formed by attaching the body-wrapped label according to the present invention to the outer peripheral surface of the body part of the container with the application surface of the heat-sensitive adhesive on the inside includes soft drinks, milk drinks, beer, wine, nutrition It can be used as a packaging container for drinks, seasonings, cosmetics, etc., has an adhesive strength that does not peel off the label during distribution, and can be easily peeled off after use, making it suitable for recyclability.

  EXAMPLES Next, although an Example is given and this invention is demonstrated concretely, these Examples do not restrict | limit this invention at all.

(Example 1)
A 50 μm biaxially stretched polypropylene resin film (manufactured by Toyobo, product name: P2761) was prepared as a base material layer.

  Ink layer 2 with the desired pattern on one side is black ink (made by The Inktec Co., Ltd., product name: Black Krios) as the first color, and white solid ink (Product name: The Inktec Co., Ltd.) is used for the second color. Gravure printing was performed using a solid white ink (manufactured by The Inktec Co., Ltd., product name: UPAC980 white) for the third color.

Further, an emulsion type acrylic resin as a thermoplastic resin, rosin and terpene resin as a tackifier, and a dilate tack type adhesive layer composed of 61% non-volatile component in dicyclohexyl phthalate as a solid plasticizer. Is printed on the label start end side by a gravure coating method with a coating width of 15 mm and a coating amount of 5 g / m ² , and the label end portion has the pattern shown in FIG. Upper end width (w4) 10 mm, label end length (L2) 6 mm, and application width (w1) 12 mm, application amount so as to form a heat sensitive adhesive non-formation area with a width (w2) of 2 mm from the label end Printing was performed at 5 g / m ² , and the laminated film thus obtained was cut into a length of 250 mm and a width of 65 mm to obtain a single-body wound label of Example 1.

  The shear strength at the label end of this label was 12 N / 15 mm on average. The results are shown in Table 1.

  Next, the body-wrapped label of Example 1 was wrapped around the bottle using a labeling machine on the surface of a 2 L PET bottle and heated at 95 ° C. for 5 seconds to make the container / label (starting end) The label is bonded to the container by an adhesive part between the parts), and the label is wound around the container and heated to give a stickiness to the label (terminal part) / the adhesive part between the label (starting part) (overlap width 12 mm). By adhering between (terminal portion) / label (starting end portion), the body-wound label-equipped container of Example 1 was obtained.

  The container with a body-wrapped label obtained above has an adhesive strength that the label does not peel off at the time of distribution, can be easily peeled off after using the hand-picking hand, and has easy peelability, It was suitable for recycling. The results are shown in Table 1.

(Examples 2 to 14)
The label of Example 2 to Example 14 with the same material and production method as Example 1 except that both ends of the label substrate are coated in the pattern shown in FIGS. 5, 6, and 8 to 19. A synthetic resin bottle was obtained.

  The container with a body-wrapped label obtained above has an adhesive strength that the label does not peel off at the time of distribution, can be easily peeled off after using the hand-picking hand, and has easy peelability, It was suitable for recycling. The results are shown in Table 1.

Measurement Method (1) Ease of Peeling Ease of peeling was evaluated based on the percentage of people who felt that the ease of peeling for subjects was improved.

(2) Shear strength The peel strength between the label at the end of the label was measured by a 180 ° peel strength test with a tensile tester based on JIS K 6854-2 using a measurement sample (15 mm width). It was.

(3) Drop-proof suitability The container with a label was naturally dropped from a height of 60 cm with the mouth facing up, and the presence or absence of label dropping was evaluated.

表１に示した実施例１〜１４の結果から明らかなように、実施例１〜１４の合成樹脂ボトル用ラベルは、接着強度を保持しつつ、剥離性に優れたラベルが得られた。また、上記実施例は、２Ｌ容の容器であったが、ラベルの剥離強度が、平均４Ｎ／１５ｍｍ以上を確保することで、ラベルの感熱接着剤層の面積を拡大するなどの方法により、更に大きな容器にも適用しうる。

As is clear from the results of Examples 1 to 14 shown in Table 1, the labels for the synthetic resin bottles of Examples 1 to 14 were excellent in peelability while maintaining the adhesive strength. Moreover, although the said Example was a 2L container, by the method of enlarging the area of the heat-sensitive adhesive layer of a label by ensuring that the peeling strength of a label is more than average 4N / 15mm, Applicable to large containers.

  Since the body-wrapped label according to the present invention has a peeling opening at the end of the label, it is easy to peel off the label after use of the container, is excellent in recyclability of the container, and is useful.

FIG. 1 is a cross-sectional view for explaining a body-wound label used in the present invention. FIG. 2 is a cross-sectional view illustrating a body-wound label used in the present invention having a design printing layer. FIG. 3 is a cross-sectional view for explaining a body-wound label used in the present invention, which further has an outer layer. It is a figure explaining the container which mounted | wore with the trunk-wrap label of this invention, FIG. 4 (a) is a front view of this container, FIG.4 (b) demonstrates the adhesion part of the trunk-wrap label of the state with which this container was mounted | worn It is a figure to do. It is a figure which shows the shape of the heat sensitive adhesive layer of the terminal part of the trunk wound label of this invention which provided the wavy heat sensitive adhesive non-formation area | region in the label edge part. It is a figure which shows the shape of the heat-sensitive adhesive layer of the terminal part of the trunk wound label of this invention which provided the wavy heat-sensitive adhesive non-formation area | region in the label edge part, and a wave-like mountain-mountain distance is shorter than FIG. It is a figure which shows correspondence. A linear heat-sensitive adhesive non-formation region is provided at the end of the label, and a triangular heat-sensitive adhesive non-formation region is provided at the top and bottom of the label. It is a figure which shows a shape. It is a figure which shows the shape of the heat-sensitive adhesive layer of the terminal part of the trunk-wrap label of this invention which provided the strip | belt-shaped heat-sensitive adhesive layer (25) in the heat-sensitive-adhesive non-formation area | region in the aspect of FIG. A linear heat-sensitive adhesive non-formation region is provided at the end of the label, and a triangular heat-sensitive adhesive non-formation region is provided at the top and bottom of the label. It is a figure which shows a shape, and is a figure which shows the aspect from which the width | variety of W4 of a label upper end part (lower end part) is shorter than FIG. It is a figure which shows the shape of the heat sensitive adhesive layer of the terminal part of the trunk wound label of this invention which provided the heat sensitive adhesive non-formation area | region which has R roundness in the label upper end part. It is a figure which shows the shape of the heat-sensitive adhesive layer of the terminal part of the trunk wound label of this invention which provided the circular heat-sensitive adhesive layer (26) further in the label of FIG. It is a figure which shows the shape of the heat-sensitive adhesive layer of the terminal part of the trunk wound label of this invention which replaced with the circular heat-sensitive adhesive layer (26) in FIG. 11, and provided the hook-shaped heat-sensitive adhesive layer (26). is there. In the label of FIG. 10, it is a figure which shows the shape of the heat-sensitive adhesive layer of the terminal part of the trunk wound label of this invention which formed the weak heat-sensitive adhesive layer (27) with weak adhesive force in the heat-sensitive-adhesive non-formation area | region side. . It is a figure which shows the shape of the heat sensitive adhesive layer of the terminal part of the trunk wound label of this invention which provided the heat sensitive adhesive non-formation area | region vertically long in the label upper end part. It is a figure which shows the shape of the heat-sensitive adhesive layer of the terminal part of the trunk wound label of this invention which provided the heat-sensitive-adhesive non-formation area | region which consists of two circles at equal distance with a label upper end part and a label edge part. It is a figure which shows the shape of the heat-sensitive adhesive layer of the terminal part of the trunk wound label of this invention which provided the arc-shaped heat-sensitive-adhesive non-formation area | region (127) in the label edge part in addition to the label upper end part and lower end part. It is a figure which shows the shape of the heat sensitive adhesive layer of the terminal part of the trunk wound label of this invention which provided the several circular arc-shaped heat sensitive adhesive non-formation area | region (127). A plurality of arc-shaped heat-sensitive adhesive non-forming regions (127) are provided at the end of the label, and a plurality of arc-shaped heat-sensitive adhesives are provided on the label side of the label end portion between the arc-shaped heat-sensitive adhesive non-forming regions (127). It is a figure which shows the shape of the heat-sensitive adhesive layer of the terminal part of the trunk wound label of this invention which provided the adhesive non-formation area | region (127).

Explanation of symbols

10 ... Synthetic resin film,
20 ... heat-sensitive adhesive layer,
30 ... Design printing layer,
40 ... outer layer,
50 ... container,
100 ... label,
110 ... Peeling mouth,
120 ... label edge,
130 ... upper end of the label,
140 ... lower end of the label,
W: Label start end,
W′—Terminal part w1—Width of label terminal part (W ′),
w2 ... the width of the heat-sensitive adhesive non-formation area formed at the end of the label,
w3 ... Distance between wavy mountain and mountain,
w4: The width of the upper end of the label in the heat-sensitive adhesive non-formation region,
L1: Label vertical length,
L2: The label end length of the heat-sensitive adhesive non-formation region.

Claims (8)

A thermosensitive adhesive layer is formed on both ends of the back surface of the label base material made of a synthetic resin film stretched uniaxially or biaxially, and the starting end portion of the label and the container body are bonded via the thermosensitive adhesive layer, In the body-wrapped label in which the label is wound in the circumferential direction of the container, and the label end portion and the label start end portion are overlapped via the heat-sensitive adhesive layer,
The said label end part has a shear strength of an average of 4 N / 15 mm or more, and a label peeling opening is formed in the label end part.   2. The body-wrapped label according to claim 1, wherein the peeling opening is formed by a heat-sensitive adhesive non-formation region at a label end portion.   The body-wrapped label according to claim 2, wherein the heat-sensitive adhesive non-formation region is formed at a label end.   The said heat-sensitive adhesive non-formation area | region is a body-wound label of Claim 2 or 3 formed in a linear form or a wave form in the label edge part.   The said wound adhesive non-formation area | region is formed in a label upper end part and / or a lower end part, The body-wound label in any one of Claims 2-4 characterized by the above-mentioned.   The body-wrapped label according to any one of claims 2 to 5, wherein the heat-sensitive adhesive non-formation region is further formed in an arc shape between an upper end portion and a lower end portion of the label.   The body-wrapped label according to any one of claims 2 to 6, wherein a plurality of the heat-sensitive adhesive non-forming regions are formed at a label end.   A container with a body-wound label, wherein the body-wound label according to any one of claims 1 to 7 is affixed to the outer peripheral surface of the body portion of the container with the application surface of the heat-sensitive adhesive inside.

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