JP2002038106A - Method for peeling sheet material with adhesive layer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for peeling a sheet material with an adhesive layer, hardly allowing the tip of the sheet material with the adhesive layer peeled from a mount to hang down, and capable of precisely adsorbing the sheet material with the adhesive layer by a robot arm or the like. SOLUTION: This method for peeling the sheet material with the adhesive layer by which the sheet material with the adhesive layer, having a length in the longitudinal direction longer than that in the width direction stuck to a supporting member is peeled from the supporting member, comprises forming the peeling boundary at the time when peeling the sheet material with the adhesive layer from the supporting member, so as to be along the longitudinal direction of the sheet material with the adhesive layer, and peeling the sheet material with the adhesive layer from the supporting member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for peeling a sheet material with an adhesive layer, which peels the sheet material with an adhesive layer adhered to a support member, from the support member.

[0002]

2. Description of the Related Art Sheet materials with an adhesive layer are used as labels and the like, and are attached to various products and packages. Generally, the sheet material with an adhesive layer is continuously adhered to a long backing sheet as a support member by the adhesive layer. One example is shown in FIG. FIG. 4 is a perspective view showing a state in which the sheet material with the adhesive layer is automatically peeled off from the backing paper.

In FIG. 4, reference numeral 61 denotes a sheet material with an adhesive layer, and a plurality of sheet materials 61 with an adhesive layer are continuously adhered to a long mount 62. The mount 62 is transported in the direction of the arrow, and the leading end is changed in direction by a peeling member 63 having a small radius of curvature. By carrying in this manner, the sheet material 61 with the adhesive layer is automatically peeled off from the backing paper 62. Then, the peeled sheet material 61 with an adhesive layer is adsorbed by a robot arm or the like and transported to a product or a package.
Stick it.

[0004]

When a sheet material with an adhesive layer is attached to a product or a package, for example, the product is a substantially rectangular parallelepiped, and the sheet material with an adhesive layer 61 to be attached to the product is also in the longitudinal direction from the width direction. It is assumed that the length is a substantially rectangular shape. Then, it is assumed that the sticking is performed such that the longitudinal direction of the product matches the longitudinal direction of the sheet material with the adhesive layer. When a substantially rectangular parallelepiped product is transported by a belt conveyor or the like, stable transport can be achieved by transporting the surface in the longitudinal direction as a guide surface. Therefore, the sheet material 61 with the adhesive layer is also transported in the longitudinal direction as shown in FIG. Here, as shown in FIG. 4, when the bent portion of the mount 62 from which the sheet material 61 with the adhesive layer is peeled is referred to as a peeling boundary 64, the tip of the peeled sheet material 61 with the adhesive layer hangs down. Therefore, the robot arm could not sufficiently adsorb the sheet material 61 with the adhesive layer, and the posture of the sheet material 61 with the adhesive layer became unstable.
Thereby, the sticking accuracy of the sheet material with the adhesive layer to the product was reduced.

[0005] The first invention has been made in view of such a problem, and the tip of the sheet material with the adhesive layer peeled off from the backing sheet is hard to hang down, and the adhesive layer with which the sheet material with the adhesive layer can be reliably absorbed by a robot arm or the like. It is a first object of the present invention to propose a method of peeling a sheet material with a stick.

In some cases, holes or notches are provided in a sheet material having an adhesive layer. The shape of such a hole may be not only a simple shape such as a circle or a square, but also an irregular shape. In addition, the notch may be not only a straight line but also a curved line.

One example is shown in FIG. Reference numeral 71 denotes a sheet material with an adhesive layer, which has an irregularly shaped hole 71a in the center,
It is assumed that the sheet is conveyed rightward while being adhered to 2.
Then, it is assumed that the conveyed sheet material with an adhesive layer 71 is peeled off from the right end 71b by a peeling member as shown in FIG. Then, the sheet material 71 with the adhesive layer is gradually peeled from the right end 71b toward the left end 71c. At this time, the peeling started from the right end 71b is separated into an upper portion 71d and a lower portion 71e due to the hole 71a, and after passing through the hole 71a, merges to reach the left end 71c. However, when the tongue-like portion 71f formed to protrude rightward from the two-dot chain line in the figure does not exert a peeling force, and when the left part is separated from the two-dot chain line,
A shearing force is applied to the adhesive layer on the tongue-shaped portion 71f, so that the adhesive layer is sheared and peeled off. For this reason, the sheet material 7 with the adhesive layer
Depending on the thickness and strength of 1, the length of the two-dot chain line, the adhesive strength, the peeling speed, and the like, a crack may occur at the portion indicated by the two-dot chain line and break.

Conventionally, such a sheet material with an adhesive layer having such irregular holes and notches cannot be peeled off using an automatic machine, and has been manually peeled off over time. For this reason, work efficiency could not be improved and the cost was high.

The second invention has been made in view of such a problem, and is capable of automatically peeling even a sheet material having an adhesive layer having a deformed hole or a cutout of a curve. A second object is to propose a method.

[0010]

The first object is achieved by any of the following means.

[0011] In a method for separating a sheet material with an adhesive layer, the sheet material with an adhesive layer having a longer length in a longitudinal direction than a width direction adhered to a support member is separated from the support member. An adhesive characterized in that the peeling boundary when peeling from the support member is formed along the longitudinal direction of the sheet material with the adhesive layer, and the sheet material with the adhesive layer is peeled from the support member. A method of peeling a layered sheet material.

[0012] In a method for separating a sheet material with an adhesive layer, a plurality of sheet materials with an adhesive layer having a longer length in the longitudinal direction than the width direction adhered to a long support member are automatically separated from the support member. Adhering and transporting the sheet material with the adhesive layer to the support member such that the longitudinal direction of the sheet material with the adhesive layer is substantially perpendicular to the transport direction of the support member, and transporting the sheet material with the adhesive layer to the support member. A method for peeling a sheet material with an adhesive layer, characterized by peeling from a sheet material.

The above-mentioned second object is achieved by the following means. The support member is provided with a tongue-shaped portion having a predetermined hole or notch, and protruding in a tongue shape along the edge of the hole or notch and having an adhesive layer, and adhering to a support member with an adhesive layer. In the method for peeling a sheet material with an adhesive layer that peels off from the support member, the adhesive layer is attached in a direction in which the protrusions of the tongue-shaped portion do not face each other with respect to the traveling direction of the peeling boundary between the support member and the sheet material with the adhesive layer. A method for peeling a sheet material with an adhesive layer, comprising peeling the sheet material.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment]
The method of peeling the sheet material with the adhesive layer that achieves the above object will be described with reference to FIG. FIG. 1 is a perspective view showing a state in which the sheet material with the adhesive layer is automatically peeled off from the backing paper.

In FIG. 1, reference numeral 11 denotes a sheet material with an adhesive layer which has an adhesive layer on the back surface and is used as a label or the like and is attached to various products or packages. It is continuously adhered to the long mount 12. The mount 12 is transported in the direction of the arrow, and the leading end is changed in direction by a peeling member 13 having a small radius of curvature. By carrying in this way, the sheet material 11 with the adhesive layer is automatically peeled off from the backing paper 12. Then, the peeled sheet material 11 with an adhesive layer is adsorbed by a robot arm or the like, transported to a product or a package, and adhered.

Here, the sheet material 11 with the adhesive layer is adhered to the mount 12 such that the longitudinal direction of the sheet material 11 with the adhesive layer is substantially perpendicular to the direction of conveyance of the mount 12. Also, a backing sheet 12 for peeling off the sheet material 11 with the adhesive layer
Is referred to as a peeling boundary 14. Then, the peeling boundary 14 of the sheet material 11 with an adhesive layer is formed along the longitudinal direction, and the sheet material 11 with the adhesive layer is peeled in the transverse direction, so that the tip of the sheet material 11 with the adhesive layer sags slightly. I'm done. Therefore, the peeled sheet material 11 with the adhesive layer can be reliably attracted to the robot arm, and the sheet material 11 with the adhesive layer can be securely adhered to a product or a package.

Further, the sheet material 11 with the adhesive layer to be peeled off
Is perpendicular to the direction of conveyance carried by the mount 12, but the product or package is conveyed in the same direction as the mount 12, and the longitudinal direction of the sheet material 11 with the adhesive layer is in the same direction. When the sheet is attached to a product or a package, the robot arm holding the sheet material 11 with the adhesive layer may be rotated by 90 degrees.

The transfer means used in the claims corresponds to a robot arm or the like. [Second Embodiment] A method of peeling a sheet material with an adhesive layer that achieves the second object will be described with reference to FIGS. FIG. 2 is a diagram of a sheet material with an adhesive layer provided with irregular holes, and FIG. 3 is a diagram of a sheet material with an adhesive layer provided with a curved cutout.

In FIG. 2, reference numeral 21 denotes a sheet material having an adhesive layer which has an adhesive layer on the back surface and is used as a label or the like and is attached to various products or packages. This is the same shape as the sheet material 71 with the adhesive layer described in the above section. The sheet material 21 with an adhesive layer is provided with a hole 21a of an irregular shape, and a plurality of sheet materials 21 with an adhesive layer are continuously adhered to a long mount 22. Then, the mount 22 is transported in the direction of the arrow, and the sheet material 21 with the adhesive layer is peeled off by the same peeling member as in the first embodiment.
Automatically peel off.

As a result, the sheet material 21 with the adhesive layer is gradually peeled from the right end 21b toward the left end 21c. In other words, the separation boundary formed by the separation member advances in the direction opposite to the direction of the arrow. At this time, the peeling started from the right end 21b is due to the hole 21a,
d, lower part 21e. A tongue-like portion 21f projecting leftward in a tongue shape is formed at the center, and the tongue upper portion 21f is similarly peeled to the tip 21g. The separation separated into the upper part 21d and the lower part 21e is the hole 2
Merges at the end of 1a, proceeds to the left end 21c, and the entire sheet material 21 with the adhesive layer is naturally and easily peeled off.

The sheet material 2 with the adhesive layer provided with the irregularly shaped hole 21a, protruding in a tongue shape along the edge of the hole 21a, and having a tongue portion 21f having an adhesive layer.
In the case where 1 is peeled off, if it is peeled off from the root side of the tongue 21f, the tongue 21f can be naturally peeled without breaking.

In other words, the sheet material 21 with the adhesive layer is placed so that the protruding portions such as a, b, and c on the tongue portion 21f do not face the traveling direction of the peeling boundary (the direction opposite to the arrow). If it arrange | positions and peels, the tongue 21f can be peeled reliably.

The same applies to a sheet material with an adhesive layer provided with notches as shown in FIG. The sheet material 31 with the adhesive layer is provided with a curved notch 31a, and a tongue-like tongue 31f is formed along the edge of the notch 31a. The sheet material 31 with the adhesive layer is adhered to the mount 32.

For example, if the backing sheet 32 is conveyed leftward in the direction opposite to the arrow and peeling is started from the left end 31c of the sheet material 31 with the adhesive layer, the peeling proceeds to the upper part 31d and the lower part 31e. The left tongue-like portion 31f shown in the figure has no peeling force, and there is a possibility that the two-dot chain line is cracked and broken.

On the other hand, when the backing paper 32 is conveyed rightward as indicated by the arrow and starts peeling from the right end 31b of the sheet material 31 with the adhesive layer, the peeling proceeds to the upper part 31d and the lower part 31e and the tongue part 31f. , And the tongue 31f is all spontaneously peeled off without being broken.

That is, the notch 31a is formed,
When peeling the sheet material 31 with the adhesive layer that protrudes in a tongue shape along the edge of the notch 31a and has a tongue portion 31f having an adhesive layer, if the sheet material 31 is peeled from the root side of the tongue portion 31f, The tongue-like portion 31f can be naturally peeled without breaking.

In other words, the sheet material 31 with the adhesive layer is placed so that the protruding portions such as a, b, and c on the tongue portion 31f do not face the traveling direction of the peeling boundary (the direction opposite to the arrow). If it arrange | positions and peels, the tongue 31f can be peeled reliably.

Although the support members used in the claims correspond to the mounts 12, 22, 32, they are not necessarily paper, but may be resin sheets.

[0029]

According to the method for peeling a sheet material with an adhesive layer according to any one of claims 1 to 3, the tip of the sheet material with an adhesive layer peeled off from the backing sheet is unlikely to hang down. Adsorption can be ensured, and peeling can be shortened.

According to the method for peeling a sheet material with an adhesive layer according to the fourth and fifth aspects, even a sheet material with an adhesive layer having an irregular hole or a cutout of a curve can be automatically peeled.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a sheet material with an adhesive layer is automatically peeled off from a backing paper.

FIG. 2 is a view of a sheet material with an adhesive layer provided with irregular holes.

FIG. 3 is a view of a sheet material with an adhesive layer provided with a cutout of a curve.

FIG. 4 is a perspective view showing a state in which the sheet material with the adhesive layer is automatically peeled off from the backing paper.

FIG. 5 is a view of a sheet material with an adhesive layer provided with irregular holes.

[Explanation of symbols]

 11, 21, 31, 61, 71 Sheet material with adhesive layer 12, 22, 32, 62, 72 Mount 13, 63 Peeling member 14, 64 Peeling boundary 21a, 71a Hole 21f, 31f, 71f Tongue 31a Notch

Claims (5)

[Claims] 1. A method for separating a sheet material with an adhesive layer, wherein the sheet material with an adhesive layer having a longer length in a longitudinal direction than a width direction adhered to a support member is separated from the support member. The peeling boundary when the material is peeled off from the support member is formed along the longitudinal direction of the sheet material with the adhesive layer, and the sheet material with the adhesive layer is peeled from the support member. A method for peeling off a sheet material with an adhesive layer. 2. The peeling of a sheet material with an adhesive layer, which automatically peels a plurality of sheet materials with an adhesive layer having a longer length in a longitudinal direction than a width direction adhered to a long supporting member from the supporting member. In the method, the sheet material with the adhesive layer is adhered to the support member and transported such that a longitudinal direction of the sheet material with the adhesive layer is substantially orthogonal to the transport direction of the support member, and the sheet material with the adhesive layer is removed. A method for peeling a sheet material having an adhesive layer, comprising peeling the sheet material from a support member. 3. The sheet material with an adhesive layer according to claim 1 or 2, further comprising a conveying means for adsorbing and conveying the sheet material with an adhesive layer immediately after the sheet material is separated from the support member. Peeling method. 4. A sheet with an adhesive layer having a predetermined hole or notch, and having a tongue-like portion having an adhesive layer protruding in a tongue shape along the edge of the hole or notch, and being adhered to a support member. In the method for separating a sheet material with an adhesive layer that separates a material from the support member, a direction in which the protrusions of the tongue-shaped portion do not face a traveling direction of a separation boundary portion between the support member and the sheet material with the adhesive layer. A method for removing a sheet material with an adhesive layer, wherein the sheet material with an adhesive layer is peeled off. 5. In the case where a plurality of the sheet members with an adhesive layer are adhered and a long supporting member is adhered and the sheet material with an adhesive layer is automatically peeled off, the protrusion of the tongue-shaped portion is conveyed. The method according to claim 4, wherein the sheet is conveyed so as not to face a downstream side in the direction.