JP2003137312A - Adhesive handle and method of peeling after its use - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adhesive handle with which after a paper bag, a corrugated fiberboard box or the like with the handle adhesively fixed is used, the bag or the like can be easily applied to recycling, incineration or the like by peeling and removing the handle made of a synthetic resin, and a method of peeling and removing the handle. SOLUTION: The adhesive handle comprises a mount with an adhesive applied, a belt-formed handle piece which has deformed in an inverted U-shape having both ends stuck to a region of the mount where the adhesive is applied, and release paper is stuck to entirely cover the adhesive applied region. A basic material of the mount is a polyester sheet with a heat distortion temperature of 130 deg.C or less. The adhesive is applied with at least a portion of the vicinity of the mount left.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive handle which can be carried on a handbag by being attached to a shopping bag or the like as a handbag or attached to a cardboard box containing a product or the like. Belongs to the technical field of a processing method in which the adhesive handle is peeled and removed from the bag, the corrugated cardboard box, etc. after its use to separately collect various raw materials and to be provided for recycling use.

[0002]

2. Description of the Related Art Similar to the present invention, a conventional adhesive handle for carrying or an adhesive handle for carrying is made of a strip of polypropylene or the like on the surface of the adhesive coated on one side of a polypropylene mount. The hand strap is bent into an inverted U shape, both ends of which are adhesively fixed, and release paper that covers the entire coating surface is attached, and the release paper is peeled off and attached to an object to be adhered such as a paper bag. Adhesive, fixed and used.

For example, in JP-A-3-7926, a polypropylene is used as a main raw material, and a composition obtained by mixing an inorganic filler and a small amount of an additive into the raw material is produced by a biaxially stretched film forming method. A synthetic paper having a multi-layer structure is used as a mount, and an adhesive handle in which a polypropylene string is attached to the mount as described above is disclosed, and is used for the same purpose as in the present invention.

Recently, it has begun to attach importance to the recycling and reuse of the cellulosic materials such as the paper bag and the corrugated paper which have been used for these handles, and after the paper bag and the like are no longer needed after use, they are attached to the handle. The need for peeling and removal of the adhesive handle made of synthetic resin has increased, but due to its role during use as a handle, the adhesive strength is high and it cannot be easily peeled or removed, so it can be used as a handle. It has been desired to develop a technique that can be easily peeled off and removed at the end of the process. In addition, incinerating the whole without peeling and removing is likely to cause damage to the incinerator due to incineration of synthetic resin, and from this point, the appearance of a peeling and removal treatment technique with easy handle is regarded as important. I came.

The difficulty of peeling and removing the handle is considered to be due to the adhesiveness and fixing state of the backing sheet to a paper bag or the like. That is, the peripheral edge of the mount is in close contact with the paper container such that the tip of the nail or the edge of the peeling knife cannot be easily inserted, and for this reason, the gripping portion for peeling due to the fingertip, for example, the lifting is easily obtained. It is believed that there is something that cannot be done.

[0006]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an adhesive handle which is adhesively fixed to a paper bag, a cardboard box or the like, and which is used as a paper container with a handle and then disposed of, for example, when discarded. An object of the present invention is to provide an adhesive handle and a method of removing and removing the adhesive handle that is made of a synthetic resin and can be easily used for recycling, incineration, etc. by making the adhesive handle easy to peel and remove. .

[0007]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventor has used a polyester sheet having a heat distortion temperature of 130 ° C. or less as a constituent base material of a mount and using an adhesive type The inventors have found that the problem can be solved by leaving an adhesive non-applied portion on at least a part of the peripheral portion of the mount forming the handle, and have completed the present invention. The summary of the present invention will be described below.

According to a first aspect of the present invention, both ends of a strip-shaped handbag piece deformed into an inverted U shape are adhered to the adhesive-applied portion of the mount to which the adhesive is applied, and the entire laid-out portion is covered. In the adhesive handle with the release paper attached to cover it, the base material of the mount is a polyester sheet having a heat distortion temperature of 130 ° C or lower, and the adhesive leaves at least a part of the peripheral part of the mount. The present invention relates to an adhesive handle that is applied by applying. A second invention relates to the adhesive handle according to the first invention, wherein the polyester sheet as a constituent base material of the mount is a sheet in which a molded bottle made of polyester is used as a raw material for remolding. A third invention relates to the adhesive handle according to the first or second aspect, wherein the polyester sheet has a thickness of 30 to 300 μm. The fourth invention is
The adhesive handle according to any one of the first to third inventions, wherein the adhesive is applied to the mount with leaving a narrow portion along at least one side of the rectangular mount. 5th invention removes the release paper of the adhesive-type handle as described in any one of the said 1st-4th invention, adheres to a paper container, and after using as a handle, the non-application part of mount is 130 degreeC or less. The peeling treatment method after the use of the adhesive handle, which is heated to the heat deformation temperature, causes the heated non-application portion to be flipped over from the paper container to facilitate gripping, and to perform the peeling treatment.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The mount which constitutes the adhesive handle according to the present invention is a polyester sheet having a heat distortion temperature of 130 ° C. or lower. The heat deformation temperature referred to here is, for a strip-shaped test piece having a predetermined width and length, the set temperature is made variable, a predetermined static load is applied, and a predetermined elongation is obtained after a certain time. Refers to the temperature, specifically 10m
A test piece having a width of m and a distance between chucks of 200 mm is used, and refers to a temperature showing an elongation of 10 mm after 1 minute under a load of 200 g.

The polyester relating to the polyester sheet used in the present invention has a heat distortion temperature of 13
Those having a temperature of 0 ° C. or lower, preferably 130 to 40 ° C., more preferably 130 to 60 ° C., and further preferably 130 to 70 ° C. are used. Polyester having properties in this range, while maintaining the adhesive force to the paper container as the object of the present invention,
Moreover, it exhibits the property of facilitating peeling and removal from the mount.

Amorphous polyester is preferable as the polyester having a heat distortion temperature within this range. Means such as adjustment of the molecular weight of the polyester, hetero-copolymerization using at least one of the copolymerization components, blending of different polyesters, etc. Can be obtained by using, but generally after using polyethylene terephthalate as a raw material, after using a molded body related to melt molding such as blow molding of polyester as a container or the like, powderized It is known that it can be obtained by using it as a raw material for remolding, that is, by recycling the waste product of the molded body, it is not necessary to manufacture the special polyester again as described above, and environmental damage etc. It can be said to be the most preferable raw material for prevention of When a polyester or other polymer having a heat distortion temperature of higher than 130 ° C. is used, a heating device at a higher temperature is required in order to cause the heat deformation of the non-adhesive portion as described below. This cannot be achieved with a simple hot air generator such as a dryer. For this reason, it is difficult and unpreferable to perform the peeling and removing work of the adhesive handle in a general household.

The thickness of the mount of the adhesive handle according to the present invention is not particularly limited, but if it is too thin, it becomes difficult to handle as a handle, and there is a problem in strength, and conversely if it is too thick, it becomes adhesive. In addition to poor workability such as agent application, when used on a thin paper bag etc., the rigidity difference between the mount and the paper bag becomes too large at the peripheral edge of the mount, stress concentrates on the peripheral edge, and damage to the paper bag etc. It is not preferable because it may lead to Considering these points, the thickness is preferably about 30 to 300 μm, but is particularly preferably about 50 to 200 μm.

The release paper according to the present invention is attached to the backing paper so as to cover the entire adhesive-coated portion on one surface of the backing paper. In this case, the adhesive is applied not on the entire surface of one side of the mount, but at least a part of the peripheral edge of the mount is left. It is preferably attached so as to cover the entire surface. After the release paper is removed, when the handle is attached to the paper container, a non-adhesive portion is present in a part of the peripheral portion of the mount between the paper bag and the surface of the paper container such as a cardboard box.

The non-adhesive portion is formed in order to form a grip portion for peeling the mount from the surface of an adhesive object such as a paper bag or a cardboard box. Therefore, the non-adhesive portion has a shape easy to grip, It is particularly preferable if it exists in a place where it can be easily grasped. However, even if these conditions such as shape and location are satisfied, most of the other parts of the mount itself are adhered to an adhesive object such as a paper bag, so that the non-adhesive part is also adhered to the adhesive object easily. It is difficult to form a grip by inserting a toe or a knife blade and lifting it.

However, it has been found that the non-adhesive portion causes a curling-up deformation which may be accompanied by a corrugation phenomenon by leaving a sticky portion on the periphery when heated to a heat deformation temperature of the mount of 130 ° C. or less. It was The present invention intends to utilize the occurrence of this phenomenon. The degree of heating for obtaining the heat deformation temperature depends on the material of the mount, but may be appropriately selected while observing the state and degree of the swelling deformation due to heating.

The heating method is not particularly limited, but it is preferable that the non-adhesive portion is as wide as possible and that the non-adhesive portion can be heated so as to be easily lifted from the mount. From these viewpoints, hot air is ejected from, for example, a slit, toward the non-adhesive portion, and is blown in parallel to the mount by blowing hot air as much as possible between the non-adhesive portion of the mount and the sticky object of the mount. It is preferable to heat the non-adhesive portion while floating it, but when it is difficult to spray in parallel as described above, the non-adhesive portion may be sprayed vertically from the outside.

Due to such heating, the non-adhesive portion of the mount is subjected to curling-up deformation which may be accompanied by wavy deformation to form the grip portion. It is usually sufficient to provide the non-adhesive portion that forms the gripping portion at the corner of at least one side of the quadrilateral mount, but in continuous production, it becomes an intermittent special shape application and is not always easy. . Rather, it is easy to form the non-coated portion along at least one side of the quadrangle. Although the width of the non-coated portion is not particularly limited, it is preferably about 2 to 10 mm in order to reliably form the gripped portion due to the phenomenon of curling up due to heating.

The effects of the present invention will be described below with reference to examples of the present invention.

[Example 1] As a backing for an adhesive handle, a bottle obtained by hollow molding of polyethylene terephthalate was used after putting the drinking water of the product into a bottle, which was then recovered and crushed and used as a raw material for remolding. used. The polyester of the remolding raw material obtained here was an amorphous polyester having a heat distortion temperature of 90 ° C. Thickness 120 using the raw material
Extrusion molding a sheet of μm, width 41m from the sheet
m, 180 mm long strips are cut out and provided for a mount, and an adhesive having a styrene-isoprene copolymer as a main component, leaving a non-coated portion with a width of 3 mm on both edges along the length direction of the mount. Was applied. The adhesive thickness is 30
was μm. On this adhesive coated surface, a total length of 390 mm,
A uniaxially stretched foam polypropylene band-shaped handbag piece having a width of 13 mm and a thickness of 500 μm is bent into an inverted U shape and fixed at both ends thereof, and then covered with a release paper covering the entire surface of the mount including the non-coated portion. I made an adhesive handle. Subsequently, the release paper of the handle is removed, and both end portions thereof are attached to the outer surfaces of the opposite side surfaces of the corrugated cardboard box, and the weight is housed therein so that the total load with the box becomes 7 kg, and the time is 6 hours. It was kept suspended in the air, but there was no peeling separation of the handle. A flat stream of hot air at 90 ° C. was blown to the sticky part of the handle of the box with the handle in which the above-mentioned hanging experiment was conducted and parallel to the handle part using a hair dryer. By blowing the hot air for 40 seconds, the adhesive non-adhesive portion of the mount has a curling up deformation accompanied by waviness, and a grip portion with a fingertip is formed. When the grip portion is gripped and peeled, the mount paper Could be easily peeled from the paper container by 180 degrees.

[0019]

Example 2 The same mount as in Example 1 was used except that the width of the mount was 82 mm and the length was 240 mm, and the type of adhesive and the mode of application to the mount were also the same as in Example 1. Further, the strip-shaped handbag piece is an amorphous polyester made of the same material as the mount, and has a total length of 540 mm, a width of 20 mm and a thickness of 15 mm.
The conditions were the same as in Example 1 except that the unstretched film of 0 μm was used. The above-mentioned adhesive handle was used, the same air-fishing test as in Example 1 was performed except that the total load was 13 kg, and the peeling treatment of the mount was performed in the same manner as in Example 1. Similar results were obtained.

[0020]

[Comparative Example 1] As a mount, a synthetic paper having a three-layer structure containing biaxially oriented polypropylene (using synthetic paper "Yupo" manufactured by Oji Yuka Synthetic Paper Co., Ltd.) having a thickness of 110 µm and a width of 41 m is used.
A sheet having a length of m and a length of 180 mm was used, the type of adhesive and the application mode were the same as in Example 1, and the band-shaped handbag piece was the same as that used in Example 1. A suspension test under the same load as in Example 1 was conducted, but no peeling abnormality was found. Subsequently, hot air at 100 ° C. was blown to the non-adhesive-coated portion parallel to the handle surface for 1 minute in the same manner as in Example 1. However, the mount did not deform, and therefore, deformation such as grippable curling up did not occur. I didn't see it at all.

[0021]

[Comparative Example 2] As a mount, a biaxially oriented polypropylene film having a thickness of 60 µm, a width of 41 mm and a length of 180
The same type of adhesive and its application mode as in Example 1 were used, and the band-shaped handbag piece was also as in Example 1, and the same hanging test as in Example 1 was carried out, but there was no abnormality. Subsequently, hot air was blown to the non-adhesive-coated portion in the same manner as in Comparative Example 1, but similarly, no deformation of the backing sheet occurred, and therefore no deformation such as flipping up which could be gripped was observed at all.

[0022]

[Comparative Example 3] The same as Example 1 except that a biaxially stretched polyester was used as the mount, the kind of adhesive and the application mode were also the same as in Example 1, and the material of the strip-shaped handbag piece was The size was set to the same conditions as in Example 1, and the same hanging test as in Example 1 was carried out, but no abnormal change was observed in the adhesive state. Further, hot air was blown in the same manner as in Example 1, but no deformation occurred in the adhesive-uncoated portion of the mount, and no deformation was observed that facilitates gripping of the handbag piece for peeling treatment. .

[0023]

[Comparative Example 4] As a mount, a multi-layered YUPO (trade name) containing the same biaxially oriented polypropylene as in Comparative Example 1 was used.
The same procedure as in Comparative Example 1 was carried out except that the size of 130 μm, the width of 41 mm, and the length of 180 mm were used. The same band-shaped handbag piece as that used in Example 1 was used. The type of adhesive and the aspect of the non-coated portion were the same as in Comparative Example 1. As a result, the grip portion could not be formed as in Comparative Example 3.

[0024]

As is clear from the above detailed description, particularly in the examples and comparative examples, in a sticky handle using a polyester having a heat distortion temperature of 130 ° C. or less, particularly recycled recycled amorphous polyester as a mount,
By forming an adhesive non-applied portion on at least a part of the adhesive applied surface peripheral portion of the mount, it is possible to cause thermal deformation of the portion to be held by a fingertip or the like, and as a result,
It has been found that the mount can be easily removed from the paper container.

Claims (5)

[Claims] 1. A strip-shaped handbag piece deformed in an inverted U shape is adhered to both ends of the adhesive-coated portion of the adhesive-coated backing sheet, and the strip-shaped handbag piece is separated so as to cover the entire interlaced portion. In an adhesive handle with a template attached, the base material of the mount is a polyester sheet having a heat distortion temperature of 130 ° C. or less, and the adhesive is applied leaving at least a part of the peripheral portion of the mount. Adhesive handle that is characterized by. 2. The adhesive handle according to claim 1, wherein the polyester sheet of the base material constituting the mount is a sheet in which a molded bottle made of polyester is used as a raw material for remolding. 3. A polyester sheet having a thickness of 30 to 30.
The adhesive handle according to claim 1, which has a thickness of 0 μm. 4. The adhesive handle according to any one of claims 1 to 3, wherein the adhesive is applied to the mount with leaving a narrow portion along at least one side of the rectangular mount. 5. The release paper of the adhesive handle according to any one of claims 1 to 4 is removed, adhered to a paper container, and used as a handle. A peeling treatment method after using the adhesive handle, wherein the peeling treatment is carried out by heating the non-coated portion to make it easy to hold the heated non-applied portion so that the non-coating portion can be easily grasped.