JPH03187840A - Cutting means for rolled film container - Google Patents

Abstract

PURPOSE:To make a cutting means easily fabricated and attached directly or indirectly to various types of containers for rolled film by a method wherein abrasive dust is applied and fixed in a short eaves shape either to a section in the longitudinal direction of a ribbon-like base or a section in the longitudinal direction of the container for the rolled film. CONSTITUTION:In a work of applying abrasive dust and adhesive to a base in endless ribbon shape, ultraviolet curing adhesive is applied in the process (a) to the base 1 that is stretched out of a rolled base 15, and abrasive dust is applied as densely as possible in layered form in the process (b). Then the base is irradiated with ultraviolet rays in the process (c) and after drying and solidification, the adhesive is further applied in the process (d), and hardening is made by ultraviolet rays in the process (e) and thereby disconnection of the abrasive dust is completely prevented. Then the base is cut in a specified length in the process (f).

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applied to a dispensing container containing a plastic film such as polyvinylidene chloride film or polyethylene film, or a rolled film such as aluminum foil, glassine paper, or wax paper. This invention relates to a cutting means and its manufacturing method.

[Conventional technology]

- Conventionally, a cutting means called a so-called sawtooth made of serrated metal is fixed to a dispensing container for a plastic film such as polyvinylidene chloride film, a rolled film such as aluminum foil, glassine paper, wax paper, etc. These saw teeth were painful to touch with fingers, and could sometimes cause injury. Therefore, as a safer cutting means, it was proposed in JP-A-57-1 to provide a file-like rough surface on the container.
It is disclosed in Japanese Patent No. 25140. If the abrasive is on a rough surface, it must be firmly attached so that the abrasive grains do not fall off during normal use.

Also, from the point of view of sharpness, angular parts such as the cut end in the length direction of the container or on the ridgeline are preferable, and the abrasive grains should be firmly fixed and fixed at corners such as on the ridgeline or cut end. To do this, you need to bend the file sheet. Since the file is firmly fixed on the sheet, it will break when bent and the abrasive grains will fall from this part. The applicant is JP-A-61-
In Japanese Patent No. 217325, a file sheet piece was proposed in which the abrasive grain surface does not break even when bent 180 degrees.

[Problem to be solved by the invention] However, even if the file sheet is bent and attached to the required area, the cut edges and ridge lines that actually require the presence of abrasive grains are very thin line-shaped areas. Therefore, most of the abrasive grains are stuck to unnecessary parts.

The present invention provides a cutting method that fixes abrasive grains only in necessary areas, does not cause discomfort even when touched with fingers, is easy to manufacture, and can be attached directly or indirectly to various types of wrapped film containers. It provides the blade.

[Means of problem solving]

The present invention is a means for cutting a wound film container in which abrasive grains are fixed in a shallow eave shape on the cut surface of a base material, and the abrasive grains are fixed so as to slightly protrude from the cross section of the base material. It has a good cutting effect, there are no areas where abrasive grains are attached unnecessarily, it is easy to manufacture, and it is safe to use. The cutting means of the present invention is used in cases where a ribbon-shaped separate body is indirectly attached to a predetermined part of a wound film container, and in cases where an eave-shaped abrasive grain layer is directly applied to the wound film container itself. There is.

In the present invention, the winding film includes plastic films such as polyvinylidene chloride film, polyethylene film, polyvinyl chloride film, polyester film, metal foil such as aluminum foil, paper such as glassine paper, wax paper, etc. It is a laminate and is widely used for long objects wound around paper tubes.

A rolled film container is usually a rectangular, horizontally long box-shaped container that can store the film wound around a paper tube by laying it down freely, but there are unique cases in which it is horizontally long and has a triangular, hexagonal, or circular cross section. There is also.

That is, - For boat fishing, it is a container consisting of a rectangular front side, a bottom side, a rear side, and two square side pieces, and has a rectangular opening at the top. Preferably, the rectangular upper surface extends from the free end of the rear surface, and the cover piece extends from the free end of the upper surface.

When using a ribbon-shaped cutting blade, cut paperboard, thin metal sheets,
An eave-like abrasive layer is applied to the cut surface of a base material such as a plastic sheet. The base material may be a ribbon having a width of at least 5 m and a length of about 20 cm so that it can stand on its own when held upright by one end. The shape is ribbon-like and the overall thickness is 0.
．． 1-1.5 mm, preferably 0.2-1IIIff1
It is preferable to use a material that can be easily attached to a rolled film container, or if it is made of metal, can be fixed with caulking, eyelets, etc.

The abrasive grains are fixed to one cut surface of the base material in an eave-like manner with a width slightly wider than the width of the base material. Since the parts that exhibit a remarkable cutting effect are the corners of the cut surface of the base material, it is preferable that the abrasive grains are present at the corners. However, since there may be unevenness in the adhesion of abrasive grains, there may be cases where abrasive grains are present at the corners of some parts, but no abrasive grains are present at the corners of other parts.

Even in such a case, if there is at least a portion where the abrasive grains protrude from the cut portion to the corner portion, there is an effect of starting cutting, and therefore it belongs to the technical scope of the present invention.

When applying a cutting method using abrasive grains to a container, it is possible to attach such a cutting means to the longitudinal cut surface of the wound film, such as the upper end of the front side of the container, or to the ridgeline in the longitudinal direction. Can be used as a safe cutting method.

It is also possible to apply abrasive grains directly to the upper end of the front side of the rolled film container. Alternatively, a so-called half-cut, in which the longitudinal ridge line is cut to a depth that does not cut the container material, can be performed, and abrasive grains can be applied to the cut surface in the form of an eave.

In order to further improve the sharpness of the cutting means, an adhesive layer is provided on the surface of the abrasive grain layer at least at both ends of the cutting means provided directly on the container body or via a ribbon. When cutting a wound film, the film tends to slip on the cutting means because it is not securely temporarily fixed on the cutting means, and cutting stress tends to be wasted.

When the adhesive is applied to the abrasive grain layer at both ends, which is the starting point of cutting, the film is temporarily fixed on the abrasive grain surface without slipping, so that the film firmly pierces the corner of the abrasive grain and is secure. disconnected. Moreover, the end portions of the film after being cut are temporarily fixed to both ends of the cutting means, which has the advantage of preventing the end portions of the film from being rolled into the container.

The abrasive grains are not particularly limited, such as alundum and silicon carbide, and preferred material and grain size can be selected depending on the type of film to be cut. Generally, the particle size is 50 to 1000 microns.

The length of the eaves, that is, the width of the abrasive grain layer protruding from the surface of the base material 1, and the length between a and b in FIG. It is sufficient that the distance between the material and the base material does not allow contact between the adhesive and the distance varies depending on the thickness of the base material and the type of adhesive, but is generally 0.05 to 0.
．． 5 mm, preferably 0.1 to 0.3 mm.

There are no particular limitations on the adhesive used to fix the abrasive grains, but if the base material is paper, UV-curable adhesives are preferable; Deformation can be prevented. To fix the abrasive grains, there are two methods: applying an adhesive and then applying the abrasive grains on top of that, protecting the abrasive grains with a second adhesive, and using a mixture of abrasive grains and adhesive. There are various methods of coating.

When fixing the abrasive grains in an eaves shape, it is possible to apply adhesive and abrasive grains to the application areas arranged in stripes with a slight gap between them, without making the cross-section of the base material to which the abrasive grains are applied come into close contact with each other. preferable. In this case, due to the presence of gaps, the abrasive grains applied to adjacent base materials cannot adhere to each other and adhere downward from the corners of each base material, and even after the adhesive hardens, each base material immediately To separate. It is preferable that the abrasive grains be fixed as tightly as possible and be in a single layer. If the abrasive grains are coarse, the cutting effect will be reduced, and if there are two or more layers, the adhesive strength of the abrasive grains will be reduced.

There are various means for applying the coating in this way, for example,
As shown in FIG. 1, a different material, such as a mount, having a thickness matching the required gap is sandwiched between the base materials. This dissimilar material is at least 2111 times smaller than the surface to which the abrasive grains are applied to the base material.
It needs to be about 111 short. That is, when adhesive and abrasive grains are applied to one surface, the gaps cannot support the material, so it is necessary to lower and sandwich the different materials beyond the length of the abrasive grains and adhesive to drip down. If they do come into contact, it will be difficult to separate the cutting means from each other after the adhesive has hardened.

In addition, when using a material whose thickness can be reduced by compression, such as paper, as a base material, compress the areas between the base materials where abrasive grains or adhesive may drip. As shown in FIG. 2, the abrasive-applied surface and voids are alternately formed in stripes. Abrasive grains may be applied to this striped surface by the method described above.

When the base material is ribbon-shaped, various manufacturing methods can be employed. For example, as shown in FIG. 3, a partition plate having a plurality of gaps having a width matching that of the ribbon-shaped substrate is provided, and a ribbon-shaped substrate slightly wider than the partition plate is inserted into the partition plate. Therefore, the abrasive grain coated surface of the ribbon-shaped base material protrudes from the partition frame. If abrasive grains and adhesive are applied to the cross section of the base material in this state, they will not come into contact with each other even after curing.

Alternatively, a long endless ribbon-like base material and a mount may be formed into a spiral shape, and the abrasive grains and adhesive may be applied to this spiral surface. In this case, the mount needs to be lower than the base material surface on the surface where the abrasive grains and adhesive are applied, as long as it is long enough so that when the abrasive grains and adhesive are applied to the base material surface, they will not drip down and come into contact with each other. Generally, about 2InI11 is sufficient. ``After the adhesive is dried, it is cut into a certain length and fixed to a predetermined portion of the wound film to form a ribbon-shaped cutting means.

In addition, the rolled ribbon-shaped base material is unwound from one end, and as shown in Figure 5, adhesive is applied to the lengthwise cross section of the base material, and then the abrasive grains are dropped, and ultraviolet rays are irradiated to bond the adhesive. is dried, and the abrasive grains are fixed to the cross section of the base material in an eave shape. After drying, it can also be cut into predetermined lengths to serve as cutting means for wound film containers.

In addition, a substance that foams when irradiated with various types of energy such as heat, ultraviolet rays, and gamma rays is mixed with adhesive and abrasive grains, and after being applied to a predetermined area, energy is irradiated to make the cross section of the paper into an eave-like shape. It is possible to cover it. Heat is generally used as energy, and foamable materials used as foaming ink can be used.

[Effect]

In the present invention, a cutting means made of abrasive grains is provided on the longitudinal cross section or ridgeline of a container of a wound film, and since the abrasive grains protrude from the cross section in an eave shape, the protruding portion is It preferentially contacts the film and improves cutting efficiency. When providing the cutting means, the abrasive grains may be directly fixed to the container, but first, a cutting means having ribbon-like eaves-like abrasive grains of a predetermined length is manufactured, and this is attached to the wound film at a predetermined portion of the container. It can also be pasted on.

Furthermore, if adhesive is applied to both ends of this cutting means, the film to be cut will be reliably temporarily fixed on the abrasive grains, so when a breaking force is applied, the abrasive grains will pierce the film without slipping, increasing cutting efficiency. improves.

[Example] - Figures 1 to 5 are explanatory diagrams showing a method of manufacturing a cutting means of the present invention.

In FIG. 1, reference numeral 1 denotes a ribbon-shaped paperboard having a paper thickness of 51III11, and the surface on which abrasive grains 3 are applied is arranged on one longitudinal cross section 2. An interleaf paper 4 having a thickness of 4II1m was sandwiched between each sheet of paper 2 mm below this cross section 2, and the whole was compressed.

In this state, apply ultraviolet curing adhesive (manufactured by Cashew Co., Ltd., #EC).
-12-0), sprinkle No. 46 abrasive grains according to JISR6001 on top of this, and turn on an 80W ultraviolet lamp for 15 minutes.
The adhesive was cured by irradiating from above. After curing, it was further overcoated with the same adhesive and cured by UV irradiation again.

After curing, when the compressive force was released, the adhesive means and the mount were naturally separated, yielding a cutting means as shown in FIG. 8 having eave-shaped abrasive grains on one cross section. 5 is a hanging portion, and the abrasive grains present at the corner between the cross section and the hanging portion exhibit the main cutting effect.

An adhesive was applied to both ends of this cutting means to improve the cutting effect. Although the adhesive coating layer actually has no change in thickness and cannot be visually discerned, FIG. 9 shows an exaggerated state in which the adhesive is applied. 7 is an adhesive layer.

The thus obtained cutting means was pasted onto the ridge line formed by the front plate and bottom plate 9 of the rolled film container 6 as shown in FIG. 6, with the abrasive grain fixing portion aligned with the ridge line. .

No. 10 is a polyvinylidene chloride film, and since it is an abrasive grain, there is no discomfort when touching it, and the sharpness is extremely improved.

FIG. 2 shows a coating method that does not use interleaf paper.

In this case, in order to provide a space on the abrasive coated surface of the ribbon-shaped base material, 500 g/c
A pressure of m was applied to reduce the paper thickness by about 2/3. 11 in FIG. 2 is a compression section. The locally compressed papers were assembled, and abrasive grains were applied to the surface where the compressed paper sections and voids were arranged alternately in stripes in the same manner as in FIG. 1. An adhesive was applied to both ends of the obtained cutting means, and the resulting cutting means was attached as a wound film to the upper end of the front plate 8 of a container containing aluminum foil.

In the case of FIGS. 1 and 2, a ribbon-shaped base material is used, but the same operation may be performed directly on the paper cut into paper boxes of the wound film.

In FIG. 3, reference numeral 12 is a partition frame having approximately 61 long groove-shaped gaps 13. The depth of the void 13 was set to be 311 In+ shorter than the width of the ribbon-shaped base material. The ribbon-shaped base material 1 was inserted into each of the gaps 13. Since the gap was shorter than the width of the ribbon-shaped base material, one end of the ribbon-shaped base material in the longitudinal direction was exposed as shown in FIG. 3. Abrasive grains and adhesive were applied to this surface according to the method shown in FIG. 1 to obtain a ribbon-shaped cutting means.

FIG. 4 is a front view of two sheets of an endless ribbon-like base material 1 made of polyvinyl chloride with a thickness of 1III+ and an interleaving paper 4 made of paperboard with a thickness of 3IllI11 stacked and wound around a winding core 14. The interleaving paper 4 was wound approximately 3IIIll below the base material 1. Abrasive grains and an adhesive were applied to the thus obtained spiral surface in the same manner as in the case of FIG. 1, and the adhesive was fixed by drying. This was sequentially rewound from the end, cut into a certain length, and an adhesive was applied to both ends on the adhesive fixing part to serve as a cutting means.

FIG. 5 shows an embodiment of the process of applying abrasive grains and adhesive to an endless ribbon-shaped substrate. The ultraviolet curable adhesive used in the case of FIG. 1 in step (a) is applied to the base material 1 unwound from the rolled base material 15, and then (b)
In the process, abrasive grains were dropped onto the adhesive as densely as possible and in a single layer.

In step (C), this is irradiated with ultraviolet rays in the same manner as in Figure 1, and after drying and fixing, an adhesive is further applied in step (b), and in step (e), it is cured with ultraviolet rays and abrasive grains are applied. completely prevented from falling off. Next, in step (f), the material was cut into a predetermined length to obtain a cutting means of the present invention. In order to carry out this embodiment more efficiently, a plurality of wound base materials can be arranged in parallel and the operation (a) karage) can be performed in common to further improve work efficiency.

There is no particular limitation on the means for fixing the abrasive grains, and a mixture of polyvinylidene chloride latex thickened with polyvinyl alcohol and 80 tyler mesh random (weight ratio 1:1) is applied and dried by heating. Good too.

FIG. 6 is a perspective view of a paper box for rolled film equipped with a ribbon-shaped cutting means manufactured in this manner. A half cut 16 that does not cut the paper is provided on the ridgeline formed by the front plate 8 and the bottom plate 9.The paper box is cut into a shape that can form a paper box, and a half cut 16 is provided between the front plate 8 and the bottom plate 9. The provided paperboard was folded inward at the ridge line and assembled into a shape as shown in FIG. Abrasive grains and adhesive were applied to the obtained aggregate surface 17 in the same manner as in FIG. 1 and dried.

There is no backing paper when peeling it off, but since the edges of the paperboard itself are slightly rounded, it can be peeled off with just a little force.
I was able to peel it off piece by piece.

When the container paperboard provided with the cutting means in this way is folded into a predetermined shape, the ridgeline portion becomes as shown in Fig. 7.
The cut surface of the container and the hanging portion 5 slightly protruding from the cut surface have a remarkable cutting effect. Moreover, half-cutting has the effect of more accurately guiding tears occurring at an end of the wound film to the other end, so that the film can be cut almost at right angles to the edge line.

〔effect〕

Effects of the Invention According to the present invention, it is possible to provide a means for cutting a wound film container with good sharpness in which abrasive grains are present only in the substantial cutting region of the base material, and such a cutting means can be manufactured with a simple operation. can do.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIGS. 1 to 5 are explanatory diagrams showing the manufacturing method of the cutting means of the present invention. FIG. 6 is a perspective view of a rolled film container provided with a ribbon-shaped cutting means. Figure 7 is an end view of the cutting means portion of the container directly provided with the cutting means;
9 is an enlarged perspective view of the cutting means, FIG. 9 is a side view of the cutting means provided with an adhesive, and FIG. 10 is a perspective view of one step in the case where the cutting means is provided directly on the container. In the drawings, 1 is a ribbon base material, 2 is a longitudinal section, 3 is an abrasive grain, 4 is a slip of paper, 5 is a hanging part, 6 is a container for a rolled film, 7 is an adhesive layer, and 8 is a front plate. ,9
1 is a bottom plate, 10 is a film, 11 is a compression part, 12 is a partition frame, 13 is a gap, 14 is a winding core, 15 is a wound base material, 1
6 is a half cut, and 17 is a gathering surface.

Claims (2)

[Claims] (1) A wound film container characterized in that abrasive grains are fixed in the shape of a shallow eave on the cut surface of a longitudinal cross section of a ribbon-like base material of a certain length or a longitudinal cross section of a wound film container. cutting means. (2) Abrasive grains are fixed in a shallow eave shape on the cut surface of a longitudinal cross section of a ribbon-shaped base material of a certain length or a longitudinal cross section of a wound film container, and the abrasive grains of the base material are fixed. By applying adhesive and abrasive grains to the surface where the desired parts are overlapped in a striped pattern at regular intervals, the abrasive grains are separated from each other for each base material, and a shallow eave is formed around the cross section of each base material. A method for producing a cutting means for a wound film container, characterized in that the cutting means is coated with abrasive grains.