KR100404798B1 - Process for manufacturing a multi-layered adhesive tape - Google Patents

Abstract

The present invention relates to a method for producing a portable multi-layer adhesive tape roll. The flat portion of the portable multi-layer adhesive tape is made by compressing an adhesive tape roll having a circular or other shape. In the compression step, the adhesive tape roll is pressed and pressed. For example, an adhesive hardened interfacial layer is applied to the plane of symmetry of the adhesive tape in the compression step. Here, the cured interfacial layer is formed by adhering the innermost surfaces of the two adhesive surfaces or inserting a material coated with a cured and solid material in the cured or high adhesive material. It is used here as a high adhesion material is a cyanoacrylate adhesive or an epoxy adhesive.

Description

PROCESS FOR MANUFACTURING A MULTI-LAYERED ADHESIVE TAPE}

FIELD OF THE INVENTION The present invention generally relates to a special method for producing a multi-layered adhesive tape roll, and more particularly to a portable flat piece formed in a space-saving form for the flat portion of the multilayer adhesive tape to be portable. It relates to an adhesive tape.

Conventional adhesive tapes are usually designed with a circular core made of paper or plastic. In recent years flat adhesive tapes 12 have been developed. The hollow plastic tube indicated by reference numeral 10 in FIG. 1 is made by extrusion molding, and the hollow rectangular paper tube is molded by bending the cardboard. The adhesive tape is unwound and torn off the roll by the desired amount. Each tube 10 is wound with a flat adhesive tape 12. However, this manufacturing method takes a lot of time and manufacturing cost. In addition, the flat adhesive tape produced by the conventional method has a bubble that does not escape when the adhesive tape is wound, adheres to the surface of the adhesive tape, it does not satisfy the quality of the product required for the finished product such as transparency, adhesive strength and the like.

If the conventional adhesive tapes are made by direct pressing to make a flat adhesive tape, the inner pubs will be warped and the outer surface of the adhesive tape will be warped by the working stress. In addition, a strong rebound force remains in the deformed material (tube or tape). The more such distortion occurs in a short time, the greater the repulsive force remains. In addition, due to the inherent properties such as the viscosity of the substrate and the adhesive layer of the memory and adhesive tape structure, the relaxation of the structure accompanied by the repulsive force after the compression stress has been removed stabilizes the adhesive tape. To state. The strength of the repulsive force is also determined by the degree of deformation of each position of the adhesive tape, the thickness of the substrate, the mechanical strength of the substrate, the physical properties of the adhesive layer, the adhesion, the overall length, the central length of the symmetrical surface (to perform the compression step) Former inner diameter) and the winding tension of the adhesive tape.

It is an object of the present invention to provide a method for producing a portable multi-layer adhesive tape which is not only suitable for flattening all adhesive tape rolls but also for automatic production and production of high quality adhesive tape.

1 is a schematic cross-sectional view of a conventional roll of adhesive tape having a central portion of a paper or plastics material having a central portion of a direct form;

2A is a schematic cross-sectional view of a flat adhesive tape without a center, which is a first embodiment of the present invention;

FIG. 2B is a sectional view schematically showing a cross section of the adhesive tape shown in FIG. 2A;

3 is a cross-sectional view schematically showing a flat adhesive tape having a high adhesive layer on the symmetry plane of the adhesive tape shown in FIG. 2;

4 is a cross-sectional view schematically showing a flat adhesive tape having a cured layer on the symmetry plane of the adhesive tape shown in FIG. 2;

FIG. 5 is a sectional view schematically showing a flat adhesive tape having a high adhesive layer and a hard layer on the symmetrical plane of the adhesive tape shown in FIG. 2;

6 is a cross-sectional view schematically showing a flat adhesive tape having a high adhesive layer on the symmetrical surface of the adhesive tape and having a paper or plastic film;

FIG. 7 is a cross-sectional view schematically showing a flat adhesive tape having a high adhesive layer and a hardened layer on the symmetrical plane of the adhesive tape shown in FIG. 6;

FIG. 8A is a schematic cross-sectional view of a flat adhesive tape having a hard layer on the plane of symmetry of the adhesive tape shown in FIG. 6; FIG.

FIG. 8B is a schematic side view of a flat tape roll with different widths aligned in a row with flat adhesive tapes; FIG.

9 is a plan view of a flat adhesive tape having a cured layer on its attaching surface, the cured layer having a width greater than that of the adhesive tape;

10 is a plan view of a flat adhesive tape with needle holes;

11 is a plan view of a flat adhesive tape having a binder and a safety cutter; And

12 is a side view schematically showing a container for storing a flat adhesive tape.

* Explanation of symbols for main parts of the drawings

10: tube

12, 200, 200a: adhesive tape

220, 230, 240, 250, 260, 270, 280, 290, 300: flat adhesive tape

202: substrate 204: adhesive layer

206: releasing layer

208: symmetric plane

224, 294: layer of high adhesive material

226, 228, 296: stiff interfacial layer

227: layer of material

232: perforation holes

302: binder 304: safe cutter

The flat portion (flat adhesive tape) of the easy-to-carry multilayer adhesive tape of the present invention is mainly produced by flatly forming a multilayer adhesive tape roll having an adhesive tape roll of circular or other shape. In the flattening process, the non-flat multilayer adhesive tape roll is compressed and pressed to be symmetrical. Just before this pressing process, a stiff interfacial layer having a high adhesive property or a weak adhesive property is added. Adding such a cured interfacial layer causes a stretching force along the plane of symmetry of the portable adhesive tape. This tensile force somewhat reduces the repulsive force that causes deformation of the flat adhesive tape. If the flat adhesive tape is not quite long, neither repulsive force is great. Therefore, the non-flat adhesive tape without the center of the paper can be compressed and adhered through the hardened interfacial layer located at or near the innermost portion of the flat adhesive tape. The flat adhesive tape, which is thus beautiful and easy to carry, is manufactured. Examples of the cured interfacial layer are adhesives, cardboard, plastic plates, metal pieces, and the like, or a combination thereof. If the strength of the flat adhesive tape is improved by increasing the thickness of the substrate with improved mechanical strength, increasing the length of the entire tape, or decreasing the length of the inner diameter, the repulsive force is also improved. Under these conditions, a layer of high adhesion material can be applied to the symmetry plane of the adhesive tape. Examples of the high adhesive material layer include high glass transition temperature polymeric materials, thermoset materials, hot melt materials, and the innermost symmetry of the flat adhesive tape. Ultra-violet curable adhesive materials to ensure symmetrical adhesion. Preferred materials for the high adhesion material layer are cyanoacrylate adhesives or epoxy adhesives having a high cross-linking density property after curing. Using any of the adhesives listed above, after condensation they provide the function of adhesion and the tension to support the flat adhesive tape. In addition, these highly adhesive substances partially counteract the repulsive force. Of course, when a high adhesive material is used in combination with the cured interfacial layer, the repulsive force is more canceled out and the stability of the flat adhesive tape is further improved.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of a specific embodiment of the present invention will be described in detail.

<First Embodiment>

2A and 2B are cross-sectional views schematically showing a flat adhesive tape as a first embodiment of the present invention.

As shown in FIG. 2B, the adhesive tape 200 is composed of a substrate 202, a releasing layer 206, and an adhesive layer 204. 'Adhesive tape' refers to an adhesive tape that is not wound). The substrate 202 may be, for example, paper, synthetic paper, cloth, nonwoven, plastic film, embossed plastic film, or It is composed of materials of similar properties. Plastic films, for example, are made of polypropylene, polyethylene, polyethylene naphthalate, polymide, polyvinylchloride and the like. Preferred substrates 202 in the present invention may also be used metal foil (metal foil). Such metal foils may include copper foil, aluminum foil, copper foil plated with silver on one or both sides of gold, tin, chromium, nickel, copper foil plated with gold, and the like. In addition, the substrate 202 may be a composite film composed of the above-described metal foil and plastic film. The adhesive layer 204 is formed on one side of the substrate 202, and the separation layer 206 is formed on the opposite side. The adhesive tape roll 200 is then wound up into an unfinished, cordless multilayer adhesive tape having a predetermined length and diameter. This unfinished cordless multilayer adhesive tape is cut into several multilayer adhesive tapes in a suitable width. These multilayer adhesive tapes are compressed into flat form. In FIG. 2A, 'TD' represents a transverse direction, which is a direction perpendicular to the plane of symmetry of the flat adhesive tape 220 which is multi-layered (hereinafter 'flat adhesive tape' refers to a multilayer flat adhesive tape). And 'PD' indicates a parallel direction. The parallel direction is a direction parallel to the plane of symmetry of the flat adhesive tape 220. As shown in FIG. 2A, a symmetrically flat adhesive tape 220 is formed by compressing and magnetically adhering the innermost surface of the adhesive layer on the symmetry plane 208.

Second Embodiment

A high adhesion layer 224 is further disposed on the symmetry plane 208 of the flat adhesive tape 220 without paper cores as described in the first embodiment described above. Materials used for the high adhesion layer 224 are polymeric materials, thermosetting materials, high solubility materials, and ultraviolet adhesive materials having a high glass transition temperature. Among the most preferred materials are cyanoacrylate adhesives or epoxy adhesives. Flat adhesive tape 230 is manufactured by performing compression and adhesion steps as shown in FIG. The sinus acrylate adhesive or epoxy adhesive on the plane of symmetry is easily cured to become a stiff interfacial layer 224. The cured interfacial layer 224 reduces some of the repulsive forces that cause deformation.

Third Embodiment

In the first embodiment, the flat adhesive tape 220 without the paper center described above may have a stiff interfacial layer 226 disposed on its symmetry plane before the compression step. The preferred interfacial layer 226 is slightly longer than or equal to half the length of the inner circumferential surface of the flat adhesive tape 220 without paper cores. The reason that the length of the interfacial layer 226 is not the same and the length of the interfacial layer 226 is slightly longer than half of the length of the inner circumferential surface of the flat adhesive tape 220 is due to the close and extended characteristics of the adhesive layer. After the compression step is performed as shown in Figure 4 is made of a flat compression tape 220. The cured interfacial layer 226 is a flat, solid layer, and includes polyethylene, polypropylene, polystyrene, polyester, polycarbonate, and polyvinyl chloride (PVC). ), Acrylonitrile-butadiene-styrene (ABS) and metals. Preferred materials for the interface layer 226 are plastic or metal having high surface energy and high bipolarity. Therefore, the partial repulsion force caused by the deformation is reduced by attaching the innermost surface of the cordless adhesive tape to opposite surfaces of the cured interfacial layer. Since it is not easy to separate the inner surface of the adhesive tape from the surfaces of the interfacial layer, the flat shape of the adhesive tape is maintained.

Fourth Example

Prior to the compacting step, the cured interfacial layer 226 comprising high adhesion properties on its outer surface will be placed on the plane of symmetry of the flat adhesive tape 220 without the paper center as described in the third embodiment. For example, the high adhesion material layer 224 is coated on the outer surface of the cured interfacial layer 226 after disposing the cured interfacial layer 226 on the symmetry plane of the adhesive layer 224. The flat adhesive tape 250 is formed after the compression step performed on the adhesive layer as shown in FIG. The high adhesive material layer 224 is composed of a polymer material having a high glass transition temperature, a thermosetting material, a solid solution material and an ultraviolet adhesive material. Preferred materials for the high adhesion material are cyanoacrylate adhesives or epoxy adhesives, which have high crosslink density properties after curing.

Fifth Embodiment

6 is a cross-sectional view schematically showing a flat adhesive tape as a fifth preferred embodiment of the present invention.

The structure of the adhesive tape shown in FIG. 6 is the same as that shown in FIG. 2B except for the detail of the adhesive tape. The adhesive tape is wound into multiple layers, with a predetermined length and diameter. A semifinished product is obtained with one layer of material 227 on the innermost surface of the adhesive tape. This material layer 227 may be paper, synthetic paper, cloth, nonwoven, plastic, embossed plastic, or metal. The semifinished product is cut into a predetermined width to form an adhesive tape 200a. Before the compression step of the semifinished product is carried out, a layer of high adhesive material or double-sided adhesive tape is placed between the paper layers or one plastic layer. Preferred high adhesion materials are one of polymeric materials with high glass transition temperatures, thermosetting materials, solid solution materials and ultraviolet adhesive materials. Preferred of these as high adhesive materials are cyanoacrylate adhesives or epoxy adhesives, and these materials have high crosslink density characteristics after curing. The adhesive tape roll having a circular or other shape is compressed to become a flat adhesive tape 260 with flat portions.

And, prior to this compression step, an interfacial layer with a high adhesive may be disposed on the symmetry plane of the adhesive tape 260. An example of such an interfacial layer is a cured interfacial layer 226 coated with a high adhesion material layer 224 on its surface. The flat adhesive tape 270 shown in FIG. 7 is manufactured through a compression step. In this case, the interfacial layer 226 which is not coated with the high adhesive material layer may also be used. The interface layer 226 extends and flattens the adhesive tape along the plane of symmetry. This causes the adhesive tape roll to be a flat adhesive tape 280, and as shown in FIG. 8A, the interfacial layer 226 has properties that are equal to or less than half of the innermost circumferential length of the adhesive tape roll.

And various adhesive tapes of different widths can be arranged in a row before compression proceeds. The cured interfacial layer 296 is disposed at the center in all adhesive tapes that are symmetrical planes, and the cured interfacial layer is coated with, for example, a high adhesion material 294. These adhesive tapes are compressed into portable adhesive tapes 290, which are aligned in a line as shown in Fig. 8B.

A cured interfacial layer 228 that is wider than the width of the adhesive tape roll can be used for the symmetrical surface of the adhesive tape roll, for attaching a trademark of a manufacturer or product on a flat adhesive tape, in particular to an opaque adhesive tape roll. The trademark of the manufacturer or commodity is displayed in the expanded portion of the cured interfacial layer protruding from the adhesive tape roll. If the cured interface layer 228 is not coated with an adhesive material, the length of the cured interface layer 228 should be equal to or longer than half the length of the inner circumferential surface of the adhesive tape roll as shown in FIG. 9. Of course, an adhesive layer (not shown in the figure) may be applied to the outer surface of the cured interfacial layer 228 to offset the partial repulsive force. This partial repulsion is caused by deformation of the flat adhesive tape 230.

Perforations 232 may be formed through the width for all of the above-described embodiments for ease of use. This cutting hole 232 is to make a flat adhesive tape to tear a part as shown in FIG. 11, a binder 302 having a safety cutter 304 may be used in place of the above-described through hole so as to easily tear a portion thereof. In addition, it may be arranged in a flat and rectangular container 500 as shown in FIG.

If the flat adhesive tape is a transparent adhesive tape, the company and product trademarks will be applied to the surface of the interfacial layer. And if the adhesive tape roll has a hardened interfacial layer, for example if it has a polyester or metal foil layer, the adhesive tape will no longer deform even with almost exhausted use. Therefore, a flat adhesive tape can be used very conveniently. And the adhesive surface of the adhesive tape roll may be disposed on the inner surface or the outer surface, which is not limited to the embodiments. If the adhesive surface of the adhesive tape is on the outside, the flat adhesive tape can be used to remove cotton chips and dust from clothing or carpets. The flat adhesive tape makes it easy to find the starting point of the adhesive tape to be used next by the adhesive.

Claims (33)

Preparing a plane of symmetry of the cured interfacial layer having a flat and solid form; Enclosing the plane of symmetry of the cured interfacial layer with a multilayer adhesive; And Disposing a high adhesion material layer between the cured interfacial layer and the multilayer adhesive layer; The high adhesive material is a method for producing a flat piece adhesive tape, characterized in that one of a polymeric material having a high glass transition temperature, a thermosetting material, a solid solution material or an ultraviolet adhesive material. The method of claim 1, The method for manufacturing the flat piece adhesive tape further includes disposing a thin film between the multilayer adhesive layer and the high adhesive material layer, And said multilayer adhesive layer has an adhesive surface inwardly. The method of claim 1, The method of manufacturing the flat piece adhesive tape further includes forming a plurality of cutout holes on the adhesive tape, And the plurality of cutout holes are disposed across the width of the adhesive tape so that the pieces of the adhesive tape are separated well. The method of claim 1, The method of manufacturing the flat piece adhesive tape further comprises the step of mounting a binder with a safety cutter to ensure that the pieces of the adhesive tape are separated well. The method of claim 1, The manufacturing method of the flat adhesive tape further comprises the step of providing a flat rectangular shaped container for storing the adhesive tape. The method of claim 1, The multilayer adhesive layer is transparent, and the cured interfacial layer has a mark on its surface. The method of claim 1, The width of the multilayer adhesive layer is substantially the same as the width of the cured interface layer, the flat piece adhesive tape manufacturing method. The method of claim 7, wherein And said multilayer adhesive layer is transparent and said cured interfacial layer has a mark on its surface. The method of claim 7, wherein And said multilayer adhesive layer has an adhesive surface toward said cured interfacial layer. The method of claim 9, The method of manufacturing the flat piece adhesive tape further comprises disposing a material layer between the multilayer adhesive layer and the cured interfacial layer. The method of claim 10, And the material layer is one of paper, synthetic paper, cloth, nonwoven, plastic, embossed plastic, or metal. The method of claim 7, wherein And said multilayer adhesive layer has an adhesive surface located away from said hardened interface layer. The method of claim 1, The width of the multilayer adhesive layer is less than the width of the cured interfacial layer so that a part of the cured interfacial layer protrudes out of the multi-layered adhesive layer, and the protruding portion of the cured interfacial layer is used for marking. Manufacturing method. The method of claim 13, And said multilayer adhesive layer has an adhesive surface toward said cured interfacial layer. The method of claim 14, The method of manufacturing the flat piece adhesive tape further comprises disposing a material layer between the multilayer adhesive layer and the cured interfacial layer. The method of claim 15, And the material layer is one of paper, synthetic paper, cloth, nonwoven, plastic, embossed plastic, and metal. The method of claim 13, And wherein said multilayer adhesive layer has an adhesive surface positioned away from said cured interfacial layer. Preparing a plane of symmetry of the cured interfacial layer having a flat solid form; Enclosing the plane of symmetry of the cured interfacial layer with a multilayer adhesive; Disposing a high adhesion material layer between the cured interfacial layer and the multilayer adhesive layer to reduce repulsion due to an adhesive tape; And Disposing a material layer between the multilayer adhesive layer and the high adhesion material layer, The high adhesive material is a method for producing a flat piece adhesive tape, characterized in that one of a polymeric material having a high glass transition temperature, a thermosetting material, a solid solution material or an ultraviolet adhesive material. delete The method of claim 18, And the material layer is one of paper, synthetic paper, cloth, nonwoven, plastic, embossed plastic, or metal. Preparing a plurality of multilayer adhesive tape rolls; Aligning the multilayer adhesive tape rolls in a row; Inserting a cured interfacial layer in the form of a flat solid into a central space inside the multilayer adhesive tape rolls; And And compressing the multilayer adhesive tape rolls into a flat piece adhesive tape. The method of claim 21, The method for producing the flat piece adhesive tape further comprises disposing a layer of high adhesive material between the adhesive surface of the innermost surface of the adhesive tape roll and the surface of the cured interfacial layer. Manufacturing method. The method of claim 22, The high adhesive material layer is a method for producing a flat piece adhesive tape, characterized in that one of a polymeric material, a thermosetting material, a solid solution material and an ultraviolet adhesive material having a high glass transition temperature. The method of claim 22, The method for producing the flat piece adhesive tape further comprises disposing a material layer between the innermost adhesive surface of the adhesive tape rolls and the surface of the high adhesive material layer. . The method of claim 24, And the material layer is one of paper, synthetic paper, cloth, nonwoven, plastic, embossed plastic, and metal. Forming a multilayer adhesive tape having a plane of symmetry, The multilayer adhesive tape is wound around a symmetrical surface of the adhesive tape, and the innermost part of the multilayer adhesive tape wound in several layers and the portions facing each other of the tape of each layer are in close contact with each other. Manufacturing method. The method of claim 26, Said inner portion and said facing portions are adhesive surfaces, said adhesive surfaces are disposed inwardly, and the inner and facing portions of said multilayer adhesive tape are tightly contacted by said adhesive surfaces. Method of making a tape. The method of claim 26, The multilayer adhesive tape further includes an adhesive surface and an interfacial layer, wherein the adhesive surfaces of the multilayer adhesive tape are disposed outward and the innermost and facing portions of the multilayer adhesive tape are in close contact with the interfacial layer. Method of manufacturing flat piece adhesive tape. The method of claim 26, The multilayer adhesive tape further includes an adhesive surface, a material layer and an interface layer disposed inwardly, wherein the adhesive surface is disposed on one side of the material layer, and the interface layer is disposed on the other side of the material layer. The manufacturing method of the flat piece adhesive tape characterized by the above-mentioned. The method of claim 26, And the material layer is one of paper, synthetic paper, cloth, nonwoven, plastic, embossed plastic, and metal. The method of claim 26, And a plurality of cutout holes along the width of the multilayer adhesive tape so that the multilayer adhesive tape piece can be easily separated from the roll. The method of claim 26, And the multilayer adhesive tape further comprises a binder having a safety cutter for fixing and restraining the multilayer adhesive tape, wherein the piece of the multilayer adhesive tape is easily separated from the roll. The method of claim 26, Method for producing a flat adhesive tape further comprises a container having a flat rectangular shape for the storage of the multi-layer adhesive tape.