JP2014069890A - Dust-preventing adhesive sheet for use in finger hole of carton - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust-preventing adhesive sheet for manually transporting a carbon easily by making it easy to insert a finger into a finger hole even if an air-impermeable synthetic resin film is tensed in the finger hole of the carton.SOLUTION: An adhesive sheet can extend an air-impermeable synthetic resin film 6 in a finger hole 7 from the inner wall surface of a carton. The adhesive sheet is formed by integrally laminating peeling paper having a dissimilar hole 5, an adhesive layer 2 having a dissimilar hole, a synthetic resin film or paper 3 having a dissimilar hole, and an air-impermeable synthetic resin film 6 having no dissimilar hole. The dissimilar hole does not have the adhesive layer 2 so that no adhesion is made on the inner wall of the carton thereby to leave such a clearance 10 between the upper portion of the dissimilar hole and the carton to allow the insertion of a finger.

Description

  The present invention relates to an adhesive sheet for adhering to a handle hole in order to prevent dust and the like from entering from the handle hole of a cardboard box containing chemicals and precision machinery.

  Conventionally, a dust-proof non-breathable synthetic resin film is bonded to a handle hole of a corrugated cardboard box containing a chemical or a precision machine that dislikes adhesion of dust. For example, Patent Document 1 has a cardboard having a through-hole established corresponding to a corrugated cardboard box hole, and has a stretching force at least five times that is laminated on one side of the cardboard so as to cover the through-hole. The sticking sheet for sticking to a corrugated cardboard box hole part which consists of films (for example, polyurene film) is described. When this sticking sheet is used to stick to the hand hole part, the hand hole is covered with a polyurethane film having a stretching force of at least 5 times, preventing dust from entering from the hand hole. sell.

  In the technique described in Patent Document 1, the reason for attaching a non-breathable synthetic resin film having a stretching force of 5 times or more is as follows. That is, if the hand hole is covered with the polyurethane film, it is difficult to insert a finger into the hand hole and it is difficult to carry it manually. For this reason, a non-breathable synthetic resin film such as a polyurethane film having a predetermined stretching force is stuck, and the polyurethane film easily stretches with fingers inserted through the handle holes. It can be inserted inside the hole. Therefore, the inserted finger can hold the upper side of the handle hole of the cardboard box, and the cardboard box can be easily transported manually.

Japanese Patent Laid-Open No. 62-168850

  However, a non-breathable synthetic resin film such as a polyurethane film having a stretching force of 5 times or more has a drawback of being expensive. The present invention eliminates such drawbacks, and uses a non-breathable synthetic resin film that is usually commercially available and has almost no stretching force. It is an object of the present invention to make it possible to easily transport a cardboard box with a film attached by hand.

  According to the present invention, by providing a modified hole in the adhesive sheet, a gap is formed above the handle hole so that fingers can be inserted into the gap.

  Specifically, the first aspect is a substantially track shape or a substantially quadrilateral shape having no upper side corresponding to the handle hole of the cardboard box, and the upper part is a substantially quadrilateral shape having no lower side extending upward from the handle hole. Corrugated cardboard formed by laminating and integrating a release paper having a modified hole, a pressure-sensitive adhesive layer having the modified hole, a synthetic resin film or paper having the modified hole, and a non-breathable synthetic resin film having no modified hole in this order. The present invention relates to a dust-proof adhesive sheet used for a handle hole of a box.

  FIG.1 and FIG.2 is the surface view which looked at the dust-proof adhesive sheet used for the handle hole of the cardboard box which concerns on an example of a 1st aspect from the non-breathable synthetic resin film side. 3 and 4 are back views of the dustproof adhesive sheet as seen from the release paper side. FIG. 5 is a side view of these dustproof adhesive sheets, and FIG. 6 is a central cross-sectional view of these dustproof adhesive sheets. The present invention is a dustproof paste formed by laminating and integrating a release paper 1, an adhesive layer 2, a synthetic resin film or paper 3, an adhesive layer 4 and a non-breathable synthetic resin film 6 in this order from the release paper side. It is related to the landing sheet. The release paper 1, the pressure-sensitive adhesive layer 2, the synthetic resin film or the paper 3 are provided with irregular holes 5. The adhesive layer 4 is generally present over the entire surface of the non-breathable synthetic resin film 6. The deformed hole 5 has a substantially track shape in which the lower part corresponds to the handle hole 7 of the cardboard box and has no upper side, and the upper part has a substantially quadrilateral shape without a lower side extending upward from the handle hole 7. Specifically, the hole has the shape shown in FIG. Further, the lower portion may be a substantially quadrilateral without an upper side corresponding to the handle hole 7 of the cardboard box, and the upper portion may be a substantially quadrilateral without a lower side extending upward from the handle hole 7. Specifically, the hole has the shape shown in FIG. The reason why the lower portions of these irregular holes 5 are substantially track-shaped or substantially quadrilateral is that the shape of the handle hole 7 of the cardboard box is substantially track-shaped or substantially quadrilateral. Since the non-breathable synthetic resin film 6 is finally stretched over the handle hole 7 and covers the handle hole 7, the deformed hole 5 is not provided. The dustproof adhesive sheet according to the present invention is attached to the cardboard box after removing the release paper 1, so that the release paper 1 can be easily removed so that the adhesive layer 2, a synthetic resin film or The paper 3, the adhesive layer 4, and the non-breathable synthetic resin film 6 are laminated so as to protrude outward from the periphery (FIGS. 1 and 2).

  As the release paper 1, a conventionally known paper having a release treatment applied to the pressure-sensitive adhesive layer 2 side is used. As the pressure-sensitive adhesive layer 2, a conventionally known layer such as an acrylic pressure-sensitive adhesive is used. As the synthetic resin film 3, a polyester film or a polyolefin film can be used, and generally a transparent film is used. Also, conventionally known paper 3 is used. As the adhesive layer 4, it is preferable to use the same type of synthetic resin as the non-breathable synthetic resin film 6. This is because it has an affinity for the non-breathable synthetic resin film 6 and can adhere the non-breathable synthetic resin film 6 to the synthetic resin film 3 or the paper 3 satisfactorily. Specifically, polyolefin resin such as polyethylene resin, vinyl acetate resin, ethylene-vinyl acetate polymer resin, polyester resin, and the like are used.

  As the non-breathable synthetic resin film 6, a conventionally known film can be used as long as it does not substantially allow air to permeate and does not allow dust to permeate with air. The non-breathable synthetic resin film 6 used in the present invention does not need to have a stretching force of 5 times or more, and has a slight elongation, but has substantially no stretching force. The non-breathable synthetic resin film 6 may be transparent or opaque, and may be colored or uncolored. Specifically, a commercially available polyethylene film, polypropylene film, polyester film, polyamide film, or the like can be used.

  The dustproof adhesive sheet according to the first aspect is manufactured by various methods, and an example is as follows. That is, after punching the irregular hole according to claim 1 in a three-layer sheet laminated and laminated in the order of release paper, pressure-sensitive adhesive layer and synthetic resin film or paper, the synthetic resin film or paper The breathable synthetic resin film is bonded and integrated by an extrusion laminating method. The extrusion laminating method is to supply a synthetic resin that can be heated and melted adhesive to a T-die, extrude it into a film from the T-die, and synthetic resin film or paper 3 and non-breathable synthesis This is a method in which a synthetic resin film or paper 3 and a non-breathable synthetic resin film 6 are bonded and laminated together by being sandwiched between resin films 6 and cooled while passing between a pair of pressure rolls. . At this time, if the synthetic resin supplied to the T-die and the material of the non-breathable synthetic resin film are the same, the synthetic resin as the adhesive and the non-breathable synthetic resin film are completely integrated, and apparently Is in a state where the adhesive layer 4 is not present.

  The manufacturing method described above will be described in more detail as follows. First, a three-layer sheet prepared by laminating and laminating the release paper 1, the pressure-sensitive adhesive layer 2 and the synthetic resin film or paper 3 in this order is prepared. This three-layer sheet is generally a long sheet having an arbitrary width, and is preferably prepared as a scroll. On the other hand, a non-breathable synthetic resin film 6 is prepared. This non-breathable synthetic resin film 6 is also generally a long film having an arbitrary width, and is preferably prepared as a scroll. Then, a three-layer sheet roll is placed below the T die, a non-breathable synthetic resin film 6 roll is placed above the T die, and the three-layer sheet is unwound and unwound from both rolls. And a synthetic resin film 6 are sandwiched between a heated and melted film-like synthetic resin extruded from a T-die, and cooled by passing between a pair of pressure rolls, thereby making the three-layer sheet non-breathable. The resin film 6 is adhered and laminated and integrated. In addition, as above-mentioned, the synthetic resin film or paper 3 of a three-layer sheet contact | abuts and adheres to the heat-melted film-like synthetic resin extruded from T-die. As a result, the non-breathable synthetic resin film 6 is pressure-bonded to the three-layer sheet punched with the deformed hole 5, and the release paper 1, the pressure-sensitive adhesive layer 2, the synthetic resin film or paper 3, the adhesive layer 4 and the non-peeling sheet. A sheet integrally laminated in the order of the breathable synthetic resin film 6 can be obtained.

  If the prepared three-layer sheet is long, a large number of irregular holes are arranged in the longitudinal direction. Moreover, when the width of the prepared three-layer sheet is narrow, the deformed holes are aligned in the longitudinal direction in one row, and when the width is wide, the deformed holes are aligned in the longitudinal direction in a plurality of rows. Finally, the deformed holes 5 are supplied as one dustproof adhesive sheet, or the deformed holes 5 are arranged in a line in the longitudinal direction, that is, the dustproof adhesive sheets are arranged in a line. Supplied in the form of a scroll (sticking sheet roll). In addition, FIG. 9 is a state partially rewound from the roll 8, and shows the dustproof adhesive sheet according to an example of the present invention as seen from the non-breathable synthetic resin film 6 side. In the former case, the release paper 1 is removed and attached to the handle hole of the cardboard box by hand, and in the latter case, the release paper 1 is automatically removed by the labeling device, The sheets are stuck one by one in the handle hole 7 of the cardboard box. In addition, even if it is the form of a dust-proof sticking sheet or the form of a dust-proof sticking sheet roll, the release paper 1 is made of an adhesive layer 2, a synthetic resin film or paper 3, so that it can be easily removed. The adhesive layer 4 and the non-breathable synthetic resin film 6 are laminated so as to protrude outward.

  A specific second aspect of the present invention is a corrugated board in which a re-wettable adhesive layer having a modified hole, a paper having the modified hole, and a non-breathable synthetic resin film having no modified hole are laminated and integrated in this order. The present invention relates to a dust-proof adhesive sheet used for a handle hole of a box.

  The second aspect is different from the first aspect in that it does not have the release paper 1, uses a rewet adhesive layer as the pressure-sensitive adhesive layer 2, and uses paper without using a synthetic resin film. Others are the same as the first embodiment. The re-wettable adhesive is provided with tackiness by applying moisture, and is solidified by evaporating or being absorbed by paper to express adhesive force. Accordingly, the release paper 1 is unnecessary because it does not have adhesiveness in a normal state where moisture is not applied. Moreover, since the base material to which the rewetable adhesive is applied uses paper that easily absorbs moisture, a synthetic resin film is usually not used.

  Moreover, the manufacturing method of the dust-proof adhesive sheet which concerns on a 2nd aspect also uses the point where the release paper 1 is not used, the point where the rehumidification adhesive layer is used as the adhesive layer 2, and the synthetic resin film. It is the same as the manufacturing method of the dust-proof adhesive sheet which concerns on a 1st aspect except the point which uses paper without doing. Therefore, the manufacturing method of the dust-proof adhesive sheet which concerns on a 2nd aspect is as follows. That is, after punching the deformed hole according to claim 2 in a two-layer sheet obtained by laminating and laminating in the order of a rewetable adhesive layer and paper, the paper and the non-breathable synthetic resin film are extruded. Adhering by a laminating method and integrating the layers.

  As described above, the dustproof adhesive sheet according to the present invention is supplied as a dustproof adhesive sheet that is finally cut into individual sheets, or is dustproofed without being cut into individual sheets. The sheets are supplied in the form of a scroll in which the sheets are arranged in a line. When supplied as a dustproof adhesive sheet that is cut one by one, the release paper 1 is removed from the dustproof adhesive sheet and the adhesive layer 2 comes into contact with the inner wall of the cardboard box before or after assembly. In addition, the dustproof sticking sheet is stuck so that the lower part of the deformed hole 5 coincides with the hand hole 7. Further, in the case where a rewetable adhesive layer is provided in place of the pressure sensitive adhesive layer 2, moisture is given to the rewetable adhesive to give stickiness, and in this state, the rewetable adhesive is applied to the inner wall of the cardboard box. The dust-proof adhesive sheet is affixed so that the lower part of the deformed hole 5 coincides with the handle hole 7. In addition, when the dustproof adhesive sheet roll is supplied in the form of a roll in which the dustproof adhesive sheets are arranged in a row, this roll is applied to the labeling device, and the handle hole 7 of the corrugated cardboard box before assembly is provided. Automatically stick to. Also in this case, the pressure-sensitive adhesive layer 2 or the rewet adhesive layer is stuck so as to abut against the inner wall of the cardboard box and the lower portion of the deformed hole 5 coincides with the handle hole 7. Thus, a cardboard box as shown in FIG. 10 is completed.

  And a chemical | medical agent, a precision machine, etc. are accommodated in this cardboard box. Since the non-breathable synthetic resin film is stretched by the dustproof adhesive sheet in the handle hole of the cardboard box, it is possible to prevent dust from entering the cardboard box. And when conveying a cardboard box by hand, there exist the following effects.

  The structure in the vicinity of the handle hole of the cardboard box obtained by using the dustproof adhesive sheet according to the present invention is as shown in FIG. FIG. 11 is a vertical cross-sectional view of the vicinity of the handle hole of the corrugated cardboard box to which the dustproof adhesive sheet is bonded, and is bonded to the inner wall of the cardboard box 9 and the handle hole 7 at the upper part of the handle hole 7. A gap 10 is formed between the non-breathable synthetic resin films 6 of the dustproof adhesive sheet. Therefore, when the cardboard box is transported manually, the fingers can be inserted into the gap 10 from the outside of the handle hole 7, and the cardboard box can be easily transported manually. For example, if the dust-proof adhesive sheet is not provided with the deformed hole 5 but is provided with a hole that substantially coincides with the handle hole 7, when this is bonded to the handle hole of the cardboard box, the structure near the handle hole is As shown in FIG. In this case, the gap 10 is not generated, fingers cannot be inserted, and the hand is placed on the outer wall and the inner wall of the corrugated cardboard box 9 so that it is difficult to carry.

It is the surface view which looked at the dustproof sticking sheet used for the handle hole of the cardboard box concerning an example of the first aspect of the present invention from the non-breathable synthetic resin film side. It is the surface view which looked at the sticking sheet for dustproof used for the handle hole of the cardboard box concerning other examples of the 1st mode of the present invention from the non-breathable synthetic resin film side. It is the reverse view which looked at the dust-proof sticking sheet shown in FIG. 1 from the release paper side. It is the reverse view which looked at the dust-proof sticking sheet shown in FIG. 2 from the release paper side. FIG. 2 is a side view of the dustproof pressure-sensitive adhesive sheet shown in FIG. 1. FIG. 2 is a central cross-sectional view of the dustproof pressure-sensitive adhesive sheet shown in FIG. 1. It is a figure which shows an example of the irregular hole said by this invention. It is a figure which shows the other example of the irregular hole said by this invention. It is the sticking sheet roll for dust prevention used for the handle hole of the cardboard box concerning other examples of the present invention, and is the surface view which looked at the state where it was partially rewound from the roll from the non-breathable synthetic resin film side. It is the perspective view which showed the state which stuck the dust-proof sticking sheet | seat shown in FIG. 1 in the handle hole of the cardboard box. It is a longitudinal cross-sectional view of the vicinity of a hand-holding hole which shows the state which stuck the dust-proof sticking sheet shown in FIG. 1 to the hand-holding hole of a cardboard box. It is a longitudinal cross-sectional view of the vicinity of a hand-hole which shows the state which stuck the dust-proof sticking sheet which is not based on this invention to the hand-hole of a cardboard box.

DESCRIPTION OF SYMBOLS 1 Release paper 2 Adhesive layer 3 Synthetic resin film or paper 4 Adhesive layer 5 Shaped hole 6 Non-breathable synthetic resin film 7 Hand hole 8 Roll 9 Corrugated cardboard box 10 Gap

A specific first aspect is a deformed hole whose lower part is a substantially track shape or a substantially rectangular shape having no upper side corresponding to a hand hole of the cardboard box, and whose upper part is a substantially rectangular shape having no lower side extending upward from the hand hole. A corrugated cardboard box formed by laminating and integrating a release paper having a modified hole, a pressure-sensitive adhesive layer having a modified hole, a synthetic resin film or a paper having the modified hole, and a non-breathable synthetic resin film having no modified hole in this order. The present invention relates to a dustproof adhesive sheet used for a hand hole.

FIG.1 and FIG.2 is the surface view which looked at the dust-proof adhesive sheet used for the handle hole of the cardboard box which concerns on an example of a 1st aspect from the non-breathable synthetic resin film side. 3 and 4 are back views of the dustproof adhesive sheet as seen from the release paper side. FIG. 5 is a side view of these dustproof adhesive sheets, and FIG. 6 is a central cross-sectional view of these dustproof adhesive sheets. The present invention is a dustproof paste formed by laminating and integrating a release paper 1, an adhesive layer 2, a synthetic resin film or paper 3, an adhesive layer 4 and a non-breathable synthetic resin film 6 in this order from the release paper side. It is related to the landing sheet. The release paper 1, the pressure-sensitive adhesive layer 2, the synthetic resin film or the paper 3 are provided with irregular holes 5. The adhesive layer 4 is generally present over the entire surface of the non-breathable synthetic resin film 6. The deformed hole 5 has a substantially track shape in which the lower part corresponds to the handle hole 7 of the cardboard box and has no upper side, and the upper part has a substantially rectangular shape with no lower side extending upward from the handle hole 7. Specifically, the hole has the shape shown in FIG. Further, the lower portion may correspond to the handle hole 7 of the cardboard box and has a substantially rectangular shape without an upper side, and the upper portion may have a substantially rectangular shape without a lower side extending upward from the handle hole 7. Specifically, the hole has the shape shown in FIG. The lower part of these irregular holes 5 has a substantially track shape or a substantially rectangular shape because the shape of the handle hole 7 of the cardboard box is a substantially track shape or a substantially rectangular shape . Since the non-breathable synthetic resin film 6 is finally stretched over the handle hole 7 and covers the handle hole 7, the deformed hole 5 is not provided. The dustproof adhesive sheet according to the present invention is attached to the cardboard box after removing the release paper 1, so that the release paper 1 can be easily removed so that the adhesive layer 2, a synthetic resin film or The paper 3, the adhesive layer 4, and the non-breathable synthetic resin film 6 are laminated so as to protrude outward from the periphery (FIGS. 1 and 2).

Claims (9)

  A release paper having a deformed hole in which the lower part has a substantially track shape or a substantially quadrilateral shape having no upper side corresponding to the hand-holding hole of the cardboard box, and the upper part has a substantially quadrilateral shape having no lower side extending above the hand-holding hole, Dust proof used for a hand hole of a corrugated cardboard box in which a pressure-sensitive adhesive layer having a modified hole, a synthetic resin film or paper having a modified hole, and a non-breathable synthetic resin film having no modified hole are laminated and integrated in this order. Adhesive sheet.   A rehumidifying adhesive layer having a deformed hole in which the lower part is a substantially track shape having no upper side corresponding to the hand hole of the cardboard box and the upper part is a substantially quadrilateral without a lower side extending upward from the hand hole, A dust-proof adhesive sheet used for a handle hole of a corrugated cardboard box formed by laminating and integrating a paper having holes and a non-breathable synthetic resin film having no irregular holes in this order. 3. The dustproof sticking sheet used for a handle hole of a cardboard box according to claim 1 or 2, wherein the irregularly shaped hole has the following shape.
Record

3. The dustproof sticking sheet used for a handle hole of a cardboard box according to claim 1 or 2, wherein the irregularly shaped hole has the following shape.
Record

  An adhesive sheet roll for dust prevention, wherein the adhesive sheets according to claim 1 or 2 are arranged in a line and are in the form of a scroll.   The adhesive layer of the adhesive sheet according to claim 1 from which the release paper has been removed is in contact with the inner wall of the corrugated cardboard box, and the substantially track-shaped or substantially quadrangular portion below the deformed hole is a clue of the corrugated cardboard box. A cardboard box that is attached to match the hole.   Water is imparted to the rewetable adhesive layer of the adhesive sheet according to claim 2 to impart moisture, and the rewetable adhesive layer is in contact with the inner wall of the corrugated cardboard box. A corrugated cardboard box in which a substantially track shape or a quadrilateral shape is attached so as to coincide with a handle hole of the corrugated cardboard box.   After punching the irregular hole according to claim 1 into a three-layer sheet laminated and laminated in the order of release paper, pressure-sensitive adhesive layer and synthetic resin film or paper, the synthetic resin film or paper and air-impermeable The method for producing a dustproof adhesive sheet for use in a handle hole of a corrugated cardboard box according to claim 1, wherein the synthetic resin film is bonded and integrated by an extrusion laminating method.   After punching the deformed hole according to claim 2 into a two-layer sheet obtained by laminating and laminating in the order of a rehumidifying adhesive layer and paper, the paper and the non-breathable synthetic resin film are subjected to an extrusion laminating method. 3. A method for producing a dustproof adhesive sheet used for a handle hole of a corrugated cardboard box according to claim 2, characterized in that they are laminated and integrated.

Images