JP2007290765A - Re-separable wrapping paper and its production method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide re-separable wrapping paper which is inexpensive as a base material and does not generate harmful gas when disposed and incinerated after use and facilitates the treatment of a paper end used for a wrapped article and easily opens the wrapped article and can repeatedly wrap and does not make the surface of the wrapped article dirty by an adhesive agent. <P>SOLUTION: The re-separable wrapping paper is coated with the base material (3) in which the adhesive agent (3) is applied to the front surface and an separable agent is applied to the back surface. A plurality of mountain-shaped projections 4 are formed on the base material (2), the thickness of the base material (2) is 0.2-2.0 mm, and the weight of the base material (2) is 60-180 g/m<SP>2</SP>. The size of the projection (4) is 1-50 mm, and a pitch interval between adjacent projections (4 and 4) is 1-50 mm. The whole thickness of the re-separable wrapping paper 1 after forming the projection (4) is 0.5-5.0 mm. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a releasable wrapping paper having adhesiveness and having peelability that can be peeled after adhesion, and a method for producing the same.

In the conventional packaging material, for example, in order to wrap a bumper, a bonnet hood, a door sash, etc., which are large parts of an automobile, it is troublesome to wind a bandage or an adhesive tape on the wrapping. Similarly, it was not easy to wrap furniture, furniture, musical instruments, glassware, etc. with moving packing materials.

FIG. 8 is a plan view showing a state in which the bumper 10 having a U-shaped cross section, which is an object to be packaged, is packaged with the wrapping paper 12.
In the illustrated example, the front surface portion 14 having a gently curved surface, flange portions 14a and 14b formed on the upper and lower sides of the front surface portion 14, side portions 16 and side surfaces bent at right angles to the left and right ends of the front surface portion 14, respectively. The flange portions 16 a and 16 b formed on the top and bottom of the portion 16 are packaged as a whole with a single wrapping paper 12.

As described above, when wrapping an article to be wrapped having the flange portions 14a and 14b of the front surface portion 14, the flange portions 16a and 16b of the side portion 16 and the end portion 18 with a wrapping paper, the whole is well wrapped. Therefore, it is necessary to reduce the protrusion and overlap of the end of the wrapping paper.
The conventional wrapping paper has a drawback in that it is not easy to bend and affix the end portion after wrapping the object to be packaged, or to secure it with a string.
Furthermore, conventional wrapping paper has a drawback that it is not easy to open the package.
If it is packaged with newspaper or the like, it is insufficient in strength for an article to be packaged having corners and protrusions, and it is disadvantageous in that it is easily broken when it is splashed with water.

In addition, the conventional wrapping paper once used has a drawback that the pasted portion of the end portion is easily damaged when the package is opened and cannot be used again.
In addition, the conventional wrapping paper has only a function of packaging and has no buffering property.
In addition, cardboard with high bending strength has a drawback that it is not easy to wrap because it does not have flexibility to follow the corners and protrusions of the package, and the weight increases.

Further, packaging with newspapers or cardboards has the drawback of being tied up with strings or bandaged with gum tape or the like. In addition, the gummed tape and the like with an adhesive have the drawback of fouling the surface of the package.
In addition, the bubble sheet has a disadvantage that it is not preferable because it deteriorates the environment in which harmful gases are generated during incineration of waste.
Various techniques have been disclosed regarding the wrapping paper and the method for manufacturing the wrapping paper (see, for example, Patent Documents 1, 2, and 3).
JP 2003-27399 A JP 2003-327278 A JP 2005-8222 A

The present invention has been proposed in view of the above-mentioned problems of the prior art,
An object of the present invention is to provide an environment-friendly releasable wrapping paper that uses an inexpensive paper as a base material, does not release harmful substances even when incinerated after disposal, and a method for producing the same.
Another object of the present invention is to provide a releasable wrapping paper that can easily treat the edge of the paper wrapped around the packaged object, that can be easily opened, and can be wrapped again and again. It is to provide.
Furthermore, another object of the present invention is to provide a releasable wrapping paper that does not leave the adhesive on the surface of the package without peeling off when the package is opened, and a method for producing the same. is there.

According to the releasable wrapping paper of the present invention, in the releasable wrapping paper having tackiness and peelability that can be peeled after adhesion, the adhesive 3 is applied to the front surface, and the release agent 7 is applied to the back surface. The base material 2 has a large number of mountain-shaped projections 4 formed thereon, the thickness t of the base material 2 is 0.1 to 2.0 mm, and the mass of the base material 2 Is 60 to 180 g / m ² , the protrusions are 1 to 50 mm in size, and the pitch interval P between adjacent protrusions 4 and 4 is 1 to 50 mm. The total thickness h of 1 is 0.5 to 5.0 mm.
The size of the protrusion is 1 to 50 mm as described above, but preferably 2 to 10 mm.

According to the method for producing a releasable wrapping paper of the present invention, in the method for producing a releasable wrapping paper having adhesiveness and releasability that can be peeled after adhesion, the substrate 2 has a thickness t of 0. The base material 2 of the releasable wrapping paper 1 having a mass of 60 to 180 g / m ² is 1 to 2.0 mm, and the component ratio of the adhesive containing the base material to the base material is 4 to 25%. A pressure-sensitive adhesive is applied to the surface of the base material, and a release agent having a component ratio of the release agent including the base material to the base material of 1 to 8% is applied to the back surface of the base material to make a wrapping paper 6. To produce a releasable wrapping paper 1 having a chevron-shaped projection 4 having a size d of 1 to 50 mm and a pitch interval of 1 to 50 mm on the surface. The total thickness h of the peelable wrapping paper 1 is 0.5 to 5.0 mm.

The shape of the chevron-shaped protrusion in the above may be a circle, an ellipse, a corner, or an arbitrary shape in cross section. The size of the projection refers to the diagonal distance of the bottom of the projection, which is the diameter if it is a circle, the major axis if it is an ellipse, and the diagonal length of the envelope if it is a square or any shape.
The base material is preferably cardboard base paper, liner paper, core base paper, flute paper, or kraft paper.

It is necessary to select a pressure-sensitive adhesive having a pressure-sensitive adhesive component taking into account the protrusion shape.
When the mass of the substrate is 60 g / m ² or less, the coating protective strength at the time of packaging and after packaging is insufficient. When the mass of the base material is 180 g / m ² or more, the waist (bending strength) of the product becomes strong, and the packaging work becomes troublesome.
It is necessary to select a release agent having a peelable component that can be easily peeled in consideration of the adhesive strength of the pressure-sensitive adhesive.

When the thickness of the base material 2 is 0.1 mm or less, the strength is insufficient, and when the thickness is 2.0 mm or more, the shape following property to the package is lacking and workability is not good.
When the component ratio including the base material of the adhesive is 4% or less, the tack performance is lowered, and when it is 25% or more, the adhesive strength is strong and the surface of the package is soiled.
The pressure-sensitive adhesive component is preferably acrylic, urethane, natural or synthetic rubber, or silicon resin, and particularly natural latex (polyisoprene resin). These may be mixed. These components are used in a suitable sticky shape when touched with a finger.

If the component ratio including the base material of the release agent is 1% or less, the strength against friction is insufficient, and if it is 8% or more, the waist (bending strength) of the product becomes strong and the packaging work is troublesome.
The release agent component is preferably acrylic resin, vinyl resin, natural resin, silicon resin, wax resin, shellac varnish, and shellac is particularly preferable. These may be mixed. These ingredients are used in a slick state when touched with a finger.

The effects of the releasable wrapping paper of the present invention described above and the manufacturing method thereof will be listed below.
(1) Since the adhesive is applied to the surface of the base material, it is easy to fix after wrapping the packaged item. (2) Since the adhesive is waterproof, the packaged item is packaged. In such a state, water entering from the base material side on the back surface is blocked by the adhesive, and it is difficult for water to pass as a wrapping paper.
(3) Since the pressure-sensitive adhesive can be peeled relatively easily, it is easy to open the package, and therefore it can be wrapped again and again. Moreover, since it can peel comparatively easily, it does not adhere to the surface of the packaged object of various shapes, and does not soil the packaged object.
(4) Since the release agent is applied to the back surface of the substrate, it can be used by being pulled lightly from the wound product wound in a coil shape without blocking.
(5) Since the release agent has strength against abrasion, the abrasion resistance strength of the releasable wrapping paper is improved, and perforation and tearing caused by rubbing during transportation are unlikely to occur.
(6) Since protrusions are also formed by embossing, the arrangement of protrusions can be made uniform, and the combination of the protrusions and the paper of the base material provides an appropriate bending rigidity as a wrapping paper. Easy.
(7) Since the pressure-sensitive adhesive and release agent are applied to the flat surface and back surface of the base material before forming the chevron-shaped projections, the pressure-sensitive adhesive and release are uniformly applied to the entire surface and back surface of the base material. The agent can be applied.
(8) Depending on the shape of the protrusion, the surface of the wrapping paper can be elastic and has excellent buffering properties.
(9) Since the protrusion is provided, the bonding area is limited, and the adhesiveness and peelability of the surface can be suitably selected.

Hereinafter, embodiments of the releasable wrapping paper of the present invention will be described with reference to the drawings.
FIG. 1 shows a plan view of a releasable wrapping paper 1 of the present invention.
In FIG. 1, the releasable wrapping paper 1 is formed in a horizontally long rectangle in which a number of mountain-shaped protrusions 4 are formed on the surface of a flat substrate 2 (upper surface in the figure).

  The material of the substrate 2 may be any of corrugated cardboard, liner paper, core raw paper, flute paper, and craft paper. Since the material of the base material 2 is paper, it is light and inexpensive and is environmentally friendly when discarded after use. In the present embodiment, a core base paper is used as the substrate 2.

The thickness of the base material 2 is 0.1 to 2.0 mm, and the mass of the base material 2 is preferably 60 to 180 g / m ² . If the thickness of the base material 2 is 0.1 mm or less, the strength is not sufficient. If the thickness of the base material 2 is 2.0 mm or more, the shape following property to the packaged item is lacking at the time of packaging, and the workability is not good.

The mass of the substrate 2 is preferably 60 to 180 g / m ² . If the mass of the base material 2 is 60 g / m ² or less, the coating protective strength at the time of packaging and after packaging is insufficient, which is not good.
Moreover, if the mass of the base material 2 is 180 g / m ² or more, the waist (bending rigidity) of the product becomes strong, and the work at the time of packaging becomes troublesome.

The components of the pressure-sensitive adhesive 3 are acrylic, urethane, natural and synthetic rubbers, and silicon resins, and natural rubber latex (polyisoprene resin) is particularly preferable. Moreover, these may be mixed. The solid content of the natural rubber latex is preferably 50 to 70%.
These components are used in a suitable sticky shape when touched with a finger.

The component of the release agent 7 is preferably an acrylic resin, a vinyl resin, a natural resin, a silicon resin, a wax resin, or a shellac varnish, among which shellac is preferable. Moreover, these may be mixed.
These ingredients are used in a slick state when touched with a finger.
The solid content of shellac varnish is preferably 20% or more.

2 and 3 show an example of the arrangement of the protrusions 4. FIG. 2 is a staggered arrangement used in FIG. 1, and FIG. 3 is a square lattice arrangement. Random arrangement may be used.
In the arrangement of the protrusions 4 in FIGS. 2 and 3, the pitch interval P between the adjacent protrusions 4 and 4 is preferably 1 to 50 mm. In addition, Preferably, 2-10 mm is good.

Referring to FIG. 4 showing a ZZ cross section of FIG. 2, reference numeral 6 indicated by a dotted line is a wrapping paper, and also referring to FIG. In the embodiment, the pressure-sensitive adhesive 3 is uniformly applied to the surface of the core base paper), and the release agent 7 is uniformly applied to the back surface.
The chevron-shaped protrusion 4 is formed on a wrapping paper 6 made of a flat substrate 2 having a thickness t. In the illustrated example, the cross section of the bottom is a circle, but may be an ellipse, a corner, or an arbitrary shape.
The size of the protrusion refers to the diagonal distance of the bottom of the protrusion. The diameter is d in the case of the illustrated circle, the long diameter is in the case of an ellipse, and the diagonal length of the envelope in the case of a square or arbitrary shape. Say.

In FIG. 4, which shows a circular chevron-shaped protrusion 4, a small R-bent part 5 connects the protrusion 4 and the wrapping paper 6 at the base of the hemispherical chevron.
The total thickness h of the protrusion 4 from the bottom of the wrapping paper 6 to the top of the protrusion 4 depends on the thickness t of the base material 2 and the pitch interval P of the protrusions 4, but the base material thickness t is 0.1-2. In the case of 0.0 mm and the pitch interval P of the protrusions 4 is 1 to 50 mm, 0.5 to 5 mm is preferable.
A pressure-sensitive adhesive 3 is applied to the surface including the protrusions 4 of the substrate 2, and a release agent 7 is applied to the back surface. The size d of the protrusion 4 is 1 mm to 50 mm, and is preferably determined in consideration of the total thickness h and the pitch interval P. The size d of the protrusion 4 is preferably 2 to 10 mm.

When the thickness t of the base material 2 is 0.2 mm, the mass is 160 g / m ² , and the pitch interval between the adjacent protrusions 4 and 4 is 6 mm, the best result is obtained when the total thickness h is about 1.0 mm. Is obtained.

Next, the manufacturing method of the releasable wrapping paper 1 having the above configuration will be described.
(1) First, the base material 2 having a mass of 60 to 180 g / m ² is prepared.
The base material is selected from cardboard base paper, liner paper, core base paper, flute paper, and craft paper. In this embodiment, a core base paper is used as the base material 2.
(2) The thickness of the core base paper 2 is 0.1 to 2.0 mm as described above.
(3) The pressure-sensitive adhesive 3 to be applied to the surface of the core base paper 2 is prepared using the aforementioned components.
(4) The release agent 7 to be applied to the back surface of the core base paper 2 is prepared using the aforementioned components.

  (5) Next, the pressure-sensitive adhesive 3 is uniformly applied to the surface of the core base paper 2 (the surface that comes into contact with the package object), and the release agent 7 is contacted with the back surface of the core base paper 2 (the object to be packaged) The wrapping paper 6 is applied uniformly on the non-surface). The application method may be any of spraying, roll, bar, or knife coating.

(6) Next, on the surface of the wrapping paper 6 on the pressure-sensitive adhesive 3 side, the projections 4 are packaged by paper embossing (embossing member) in an arbitrary arrangement not shown in FIG. 2, FIG. 3 or in the shape shown in FIG. The releasable wrapping paper 1 is made by embossing from the back side of the paper 6. At this time, it is necessary to consider that the bent portion 5 rising from the surface of the wrapping paper 6 becomes a deep drawing and the strength of the wrapping paper 6 does not decrease.
The protrusion arrangement (see FIGS. 2 and 3) and the shape of the protrusion 4 (see FIG. 4) are as described above.

FIGS. 6 and 7 are views of packaging the bumper 10 of the conventional example in FIG. 8 using the releasable wrapping paper 1 produced by the method for producing the releasable wrapping paper having the above configuration.
The surface (projection side) to which the pressure-sensitive adhesive 3 of the releasable wrapping paper 1 is applied is adhered to the bumper 10 and the whole is packaged.

Finally, the surfaces (adhesive-coated surfaces) of the releasable wrapping paper 1 are joined together at the end of the upper flange 16a to form a mating surface portion 13 such as squeezing and packaging. The end portion 18 is also wrapped with a similar mating surface portion.
In addition, the code | symbol 13a shown with the dashed-two dotted line is the state bent when the mating surface part 13 got in the way.
Since the excess part when wrapping and fixing is easily broken, the end portion can be processed according to the shape of the package.
In order to open the package, the mating surface portion 13 is peeled off.

If packaging is carried out as described above, the packaging volume can be reduced by forming the mating surface portions 13 at various places even in a packaged object having a protruding shape.
Since the surface to which the adhesive 3 of the releasable wrapping paper 1 is applied can be easily peeled off from the bumper 10 of the package, the packaging can be repeated. Further, the back surface to which the release agent 7 is applied has wear resistance strength, and even if it comes into contact with other luggage, it is difficult to cause holes or tears. Therefore, it can be reused.

The top view of the releasable packaging paper by this invention. The A section enlarged view which shows the protrusion arrangement | sequence of FIG. The another arrangement | sequence figure of FIG. ZZ sectional drawing of FIG. Side view of wrapping paper. The top view which shows the example of packaging of the to-be packaged object by the releasable packaging paper of this invention. YY sectional drawing of FIG. The top view which shows the example of packaging of the to-be packaged object by the conventional wrapping paper.

Explanation of symbols

t ... paper thickness h ... total thickness of protrusion P ... protrusion pitch 1 ... removable wrapping paper 2 ... substrate 3 ... adhesive 7 ... Release agent 4 ... Projection 5 ... Bent 6 ... Wrapping paper

Claims (2)

In a releasable wrapping paper that has adhesiveness and can be peeled off after adhesion, it is provided with a substrate coated with an adhesive on the surface and coated with a release agent on the back surface, and the substrate has a number of peaks. A mold-like protrusion is formed, the thickness of the base material is 0.1 to 2.0 mm, the weight of the base material is 60 to 180 g / m ² , and the protrusion has a size of 1 to 50 mm. The releasable wrapping paper is characterized in that the pitch interval between adjacent protrusions is 1 to 50 mm, and the total thickness of the releasable wrapping paper after forming the protrusions is 0.5 to 5.0 mm. . In the manufacturing method of the releasable wrapping paper which has adhesiveness and can peel after adhesion, the base material whose thickness is 0.1-2.0 mm and whose mass is 60-180 g / m < ² >. The pressure-sensitive adhesive containing 4 to 25% of the pressure-sensitive adhesive containing the base material relative to the base material is applied to the surface of the base material, and the component ratio of the release agent containing the base material relative to the base material is 1 to 8%. A release agent is applied to the back surface of the base material to make a wrapping paper, and the wrapping paper is embossed to form chevron-shaped protrusions having a size of 1 to 50 mm and a pitch interval of 1 to 50 mm on the surface. A method for producing a releasable wrapping paper, wherein the releasable wrapping paper is manufactured, and the total thickness of the releasable wrapping paper 1 on which the protrusions are formed is 0.5 to 5.0 mm.

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