JPH02205547A - Highly strong rolled film in distribution container - Google Patents

Abstract

PURPOSE:To easily cut a highly strong rolled film by a method wherein fine flaws are made at ends of the rolled film while grinding particles are fired on a cutter part of a container. CONSTITUTION:Fine flaws 7 are made along both end lines of a rolled film 8, while grinding particles 9 are provided on a ridge formed by a front side face 1 and a bottom side face 2. A ridge part 10 applied with the grinding particles 9 is fixed to a portion where the cutting efficiency is highest in a width not exceeding twice the thickness of plate paper. Since a container with grinding particles fixed only on a portion having the highest cutting efficiency in narrow width, existence of a cutting means is seldom felt causing no discomfort but keeping high cutting efficiency. In addition, since fine flaws 7 are made along the end lines of the film, the highly strong rolled film can be easily cut.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a high-strength wound film housed in a dispensing container with a cutting tool, and particularly to a high-strength wound film such as a polyester film, a nylon film, or a laminate thereof. Used for rolled film made of plastic film.

[Conventional technology]

Conventionally, a cutting means called a so-called sawtooth is fixed to a dispensing container for a rolled film such as a plastic film, aluminum foil, or glassine paper.

These saw teeth caused pain (and sometimes caused injury) when fingers came into contact with them.Therefore, Japanese Patent Application Laid-Open No. 125140/1983 discloses that a file-like rough surface is provided on the container as a cutting means. The file-like rough surface must be firmly attached to the surface so that the abrasive grains do not fall off during normal use.

Also, from the point of view of sharpness, angular parts such as on ridge lines or cut edges of paperboard are preferable. It is necessary to bend the file sheet in order to firmly fix the abrasive grains to corners such as ridges and cut edges. Since the file sheet is firmly fixed, it will break when bent and the abrasive grains will fall from this part. The present applicant proposed in Japanese Patent Application Laid-Open No. 61-217325 a file sheet piece that does not break even when bent 180 degrees.

[Problem to be solved by the invention]

However, when the film to be cut is a high-strength film made of polyester or the like, it is difficult to cut even with saw teeth, and when the container is made of paperboard, the container itself is deformed. Therefore, there was a need for a technology that would not cause discomfort when touched, but would also be able to easily cut even high-strength wound films.

[Means of problem solving]

The present invention aims to solve the above-mentioned problems, and its structure is a dispensing container having an opening at the top for storing a high-strength wound film and unwinding it from the end for use. There are minute scars on the edge of the
Abrasive grains are fixed on the cut or ridgeline of the container. Preferably, the abrasive grains are fixed on the ridgeline of the container with a width approximately twice the thickness of the container material. Furthermore, a rigid plate is used as the cutting blade, and abrasive grains are fixed to the cutting surface of the rigid plate with the width of the rigid plate, or the rigid plate is folded in half, and the abrasive grains are preferably fixed on the cut surface of the rigid plate with a width of about 2 times the thickness of the rigid plate. It is characterized by fixed abrasive grains with twice the width.

The wound film according to the present invention is a polyester film, an olefin film such as polyethylene or polypropylene, a nylon film, a polyvinyl chloride film, or a laminate of these and other films. For example, it is a film in which an aluminum layer is vapor-deposited on a polyester film and a paper layer is further provided, and when food is wrapped with this film and heated in a microwave oven, the food can be heated with a multilayer film or fried food can be placed on the film. Examples include laminates of polyolefin and paper used for

These films have high strength and are difficult to cut.
A group of fine scars are created along the edge line.

The scars may be penetrating or non-penetrating, as long as they can reduce the resistance at the initiation of tearing the film and do not affect the strength of the film. The scars can be easily created using, for example, the tool disclosed in JP-A-61-142133.

The container is usually a rectangular, horizontally elongated paperboard box in which a film wound around a paper tube can be rotatably stored, but it may also be manufactured using other materials such as plastic or metal. Unique ones include horizontally elongated shapes with triangular, hexagonal, and circular cross sections. Generally, the front side of the rectangle,
It consists of a bottom side, a rear side, and two square side pieces, with a rectangular opening formed 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.

The cutting means is preferably provided at the upper end of the front side of the container, on the longitudinal ridgeline, or at the tip of the cover piece, and a preferable location can be selected depending on the shape of the box.

The abrasive grains fixed to the container material as a cutting means are not particularly limited and may be made of alundum, silicon carbide, etc., and a preferable grain size can be selected depending on the type of film to be cut.

When fixing the abrasive grains, the part where the cutting means is to be installed is used, for example, the aggregated surface obtained by stacking and compressing a plurality of sheets with the cut surfaces in the length direction aligned as they are, or the ridgeline part is folded into two and then a plurality of sheets are formed. A mixed solution of abrasive grains and adhesive is applied to the assembled surface obtained by stacking and compressing. When fixing, adhesive containing abrasive particles can be applied from above to the application surface of the stacked and compressed bundle, that is, the cut surface or the gathering surface of the two folded surfaces, or sprayed from the side. The coated surface may be brought into contact with the surface on which the adhesive liquid containing the adhesive has been poured. In addition, a ribbon-shaped rigid plate having at least the same rigidity as a paperboard may be folded in half, stacked and compressed, and abrasive grains are fixed on the aggregated surface in the length direction, and this is used as a cutting means to cut the container. It may be fixed to the desired site by pasting or other means.

As the adhesive, a thermosetting resin adhesive, a hot melt adhesive, or a suspension mixture of a plastic latex such as polyvinylidene chloride and abrasive grains may be applied. In this case, the resin penetrates into the inside of the paper material and has the effect of reinforcing the vicinity of the cut end of the paperboard. Further, after fixing with a thermosetting resin adhesive, it is possible to overcoat with a film having rubber elasticity to improve the retention of the abrasive grains. It is also applicable to containers made of plastics other than paperboard, such as polypropylene sheets and polyvinyl chloride sheets.

[Effect]

The present invention uses a container in which abrasive grains are fixed in a narrow width only in the part of the wound film container that has the highest cutting efficiency, so the presence of the cutting means is hardly confused, there is no discomfort, and the cutting efficiency is high. expensive. Furthermore, in order to increase the cutting efficiency of the high-strength film, a group of fine scars are densely provided along the edge line of the film itself.

〔Example〕

FIG. 1 is a perspective view of a cardboard dispensing container for high strength wound film. 1 is a front side, 2 is a bottom side, 3 is a rear side, 4 is an upper side, and 5 is arranged in order to form a cover piece.

6 is a side piece that fixes the front side 1, the bottom side 2, and the rear side 3 at right angles to each other. 7 is a group of fine scars provided along both edge lines of the wound film 8. Such scar group 7
was machined at high speed using the tool disclosed in Japanese Patent Application Laid-open No. 142133/1983. Therefore, the tear initiation effect was increased without reducing the strength of the wound film.

Reference numeral 9 denotes abrasive grains provided on the ridgeline formed by the front side l and the bottom side 2.

In order to fix the abrasive grains 9 on the ridgeline, as shown in FIG. 3, the front side 1 of a pre-cut paperboard was folded over the bottom side 2, stacked and compressed. This compressed surface is coated with polyvinylidene chloride latex thickened with polyvinyl alcohol.
Mixed liquid with 0 mensure random (weight mixing ratio 1:1)
was applied and dried by heating.

(2) After the above operations, the cut paperboard was peeled off one by one to form a container as shown in FIG. 1 using conventional means. The ridgeline portion 10 to which the abrasive grains 9 have been applied is as shown in FIG.
is fixed at a position with a width not exceeding twice the thickness of the paperboard where cutting efficiency is highest.

Reference numeral 11 indicates a region penetrated by polyvinylidene chloride latex.

The part to which the abrasive particles are fixed as the cutting means is not limited to the ridgeline, but may be, for example, the cut surface of the front side surface 1 as shown in FIG. 4. In this case, the pre-cut cardboard is not folded (it is stacked and compressed), and the abrasive grains are fixed on the resulting collection of cut surfaces of the front side surface 1 in the same manner as in the case of FIG. 3.

Furthermore, as a cutting tool, rigid plates such as paperboard, plastic plates, metal ribbons, etc. having a length that is almost the same as the length direction of the container are stacked as they are or folded in half, and the abrasive grains are similarly applied to the collecting surface in the length direction. may be fixed, and the resulting cutting tool may be fixed to a predetermined portion of the container by pasting or other means.

〔effect〕

According to the present invention, it is possible to efficiently produce a high-strength wound film packed in a dispensing container that does not cause discomfort when touched and can be easily cut.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, FIG. 1 is a perspective view, FIG. 2 is a sectional view of a ridgeline portion, and FIG. 3 is a perspective view showing the manufacturing process.
FIG. 4 is a perspective view of the vicinity of the cutting means of another embodiment. In the drawings, the symbol ■ is the front side, 2 is the bottom side, 3 is the rear side, 4 is the top side, 5
is a cover piece, 6 is a side piece, 7 is a scar group, 8 is a rolled film,
9 is an abrasive grain. Patent applicant Asahi Kasei Industries, Ltd.

Claims (3)

[Claims] (1) A dispensing container that stores a high-strength wound film and has an opening at the top that is used by unrolling it from the end, and the end of the wound film is provided with minute scratches, A high-strength rolled or rolled film packed in a dispensing container, characterized by having abrasive grains fixed to the cut portion of the container. (2) A dispensing container with an opening at the top that stores a high-strength wound film and is used by unrolling it from the end, and the end of the wound film is provided with fine scratches, A high-strength wound film packed in a dispensing container, characterized in that a cutting section of the container is provided with a cutting means, and the cutting means is a cutting tool having abrasive grains fixed to the cut surface of a rigid plate. (3) The cutting means folds the rigid plate in half in the length direction,
3. The high-strength wound film packed in a dispensing container according to claim 2, characterized in that it is a cutting blade having abrasive grains fixed to the bifold surface.