JPH10101268A - Core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recycle a used core and burn it after crushing it and reducing its volume even if it is abandoned by using composition which comprises paper and heat plastic synthetic resin and a small amount of wax and in which weight of paper is larger than a half of total weight. SOLUTION: A cylindrical member 1 is formed from core composition of paper and heat plastic synthetic resin and a small amount of wax. As the paper, there are used paper of news paper, magazines, a telephone directory and the like. As the heat plastic synthetic resin, there are polypropylene, polyethylene and the like. Weight of the paper is made larger than a half of total weight of the core composition and for example, it is preferable to make the weight of paper more than 100wt. and less than 300wt. Plasticizer, stabilizer, coloring agent and the like may be mixed in the composition. A plurality of thin part 2 are formed parallel with axis of the cylindrical member in an outer wall of the cylindrical member 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core used for winding and wrapping a long cord, tape, band, electric wire or the like.

[0002]

2. Description of the Related Art Conventionally, such a winding core is formed by spirally winding a cardboard tape into a continuous cylindrical body, and cutting the cylindrical body into appropriate lengths. However, after finishing using a cord or tape, such a winding core is thick and hard, despite being made of paper, so it is difficult to crush or cut open, and it remains bulky and discarded There was no other way but to burn.

[0003] Further, pulp with a thickness of 5 mm or more cannot be returned to pulp for regeneration, and furthermore, if moisture is contained during use of the core, the strength is extremely reduced.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems and provides an effective winding core that can be recycled after use and can be burned after crushing to reduce the bulk even when discarded. To provide.

[0005]

In order to achieve the above object, the core of the present invention comprises paper, a thermoplastic synthetic resin and a small amount of wax, and the weight of the paper is made more than one half of the total weight. It is characterized by using a composition for a core.

The core of the present invention is preferably made of a thermoplastic synthetic resin 1
It is characterized by using a core composition in which the paper is more than 100 parts by weight and not more than 300 parts by weight with respect to 00 parts by weight.

Further, the core of the present invention is characterized by using a composition for the core in which the thermoplastic synthetic resin is an olefin resin.

[0008] Further, the core of the present invention is formed by forming a tubular body from the above composition, and the tubular body.

Further, the winding core of the present invention has a plurality of thin portions formed on the outer wall of the tubular body in parallel with the axis of the tubular body.

Further, the winding core of the present invention has an even number of thin portions and is formed at substantially equal intervals.

Further, in the winding core of the present invention, a rectangular plate is formed from the above composition, the rectangular plate is rounded, and its ends are locked.

Further, in the winding core of the present invention, a hook having a constricted portion is formed at one end on the short side of the rectangular plate,
A cutout is formed at the other end on the short side of the rectangular plate, and a hook portion is fitted and locked in the cutout.

Further, the winding core of the present invention is formed by a wide portion having a notch wider than the width of the hook portion, and a narrow portion substantially equal to the width of the constricted portion.

[0014]

Embodiments of the present invention will be described below. In the figure, reference numeral 1 denotes a cylindrical body. The tubular body 1 is formed from a core composition composed of paper, a thermoplastic synthetic resin, and a small amount of wax. As the paper, waste paper such as newspapers, magazines, telephone directories, etc., shredder waste from offices, cutting waste from bookbinding and printing companies, and the like, as well as pulp waste in the papermaking process can be used.

As the thermoplastic synthetic resin, polyvinyl chloride, polyethylene terephthalate, polystyrene and the like are used in addition to olefin resins such as polypropylene, polyethylene and ethylene-vinyl acetate copolymer. As the wax, paraffin, stearic acid, crystal wax, carnauba wax and the like are used.

The core composition is such that the weight ratio of paper to thermoplastic synthetic resin is greater for paper than for thermoplastic synthetic resin. That is, the weight of the paper is set to be more than one half of the total weight of the composition for the core. Specifically, the weight of the paper exceeds 100 parts by weight and 100 parts by weight of the thermoplastic synthetic resin.
The range is preferably not more than 00 parts by weight. In addition,
A plasticizer, a stabilizer, a colorant, and the like may be appropriately mixed in the composition.

The tubular body 1 may be produced by extrusion molding, injection molding, or the like of the above-described core composition, and the production conditions are not particularly limited. As the shape of the cylindrical body 1, any shape suitable for winding a string or the like such as a cylindrical cross section, a regular polygon, or the like may be used.

Further, when a plurality of thin portions 2 are formed on the outer wall of the cylindrical body 1 in parallel with the axis of the cylindrical body, a string or the like is wound around the cylindrical body 1 so as to be uniform in the centripetal direction during use as a winding core. Is applied, a tightening force is applied to the thin-walled portion 2 and the thin-walled portion 2 becomes a fold when the cylindrical body is crushed after use, even though the thin-walled portion 2 is not crushed. This is preferable because it can be easily crushed and the volume of the cylindrical body can be reduced.

The thin portion 2 may be a groove having a V-shaped cross section as shown in FIG. 1, but may be a cut with a thin blade, or the inner or outer shape of the cylindrical body is circular and the other is circular. The thin portion 2 may be partially formed in the thickness of the cylindrical body itself, such as a polygon. Furthermore, at least two thin portions 2 may be formed on the opposing surface of the cylindrical body 1, but if 6 to 10 are formed at equal intervals, the cylindrical body 1 is crushed after use. In this case, the nearest thin portion 2 becomes a fold and can be crushed smoothly, which is preferable.

Further, the cylindrical body 1 may be directly molded from the composition for the core. However, a rectangular plate 11 is first prepared from the above composition, and the rectangular plate 11 is rolled into a cylindrical shape. The cylindrical body 1 may be formed by connecting both ends. This rectangular plate 1
In the case of producing 1, in addition to extrusion molding and injection molding, press molding, calender roll molding and the like can be used.

As a method of connecting the both ends of the rectangular plate 11 into a cylindrical shape by rounding the two ends, there are bonding, heat welding, use of a staple, and the like. A hook portion having a constricted portion at one end is formed, and a notch is formed at the other end, and the hook portion is removably locked at both ends such as fitting and locking into the notch and rolling into a cylindrical shape. By doing so, when the string or the like wound on the core is used up, the hook portion can be removed from the notch and can be spread on the original rectangular plate body 1, so that the bulk can be reduced and the collection can be performed. It is preferable because it can be reused.

Further, it is preferable that the notch is provided with a wide portion that is wider than the width of the hook portion and a narrow portion that is substantially equal to the width of the constricted portion, so that attachment and detachment can be facilitated and the engagement can be securely performed.

Next, an embodiment of the present invention will be described.

Example 1 As a paper, an old newspaper cut into an approximately 1 cm square was used, and a used PP band was used as a thermoplastic synthetic resin.
The following composition was used by using what was cut to below m. Using this composition, a cylindrical body having an inner diameter of 200 mm and an outer diameter of 208 mm as shown in Fig. 1 was extruded. At the time of extrusion molding, cutouts having a depth of 2 mm were formed at equal intervals on the outer periphery of the cylindrical body.
Individually formed. Next, the tubular body was cut into a length of 190 mm and used as a winding core of a PP band for packing. However, it was inferior to the conventional 6 mm thick paper tube winding core. Further, the core was measured for compressive strength at a compression speed of 50 mm / min. As a result, the core endured 70 kg and passed the standard for the core. Then, after using the PP band for packing, it was crushed by being crushed at the notch portion which became a pair, and became flat and the bulk could be reduced.

Example 2 An old newspaper was cut into approximately 1 cm square paper, and a used PP band was used as a thermoplastic synthetic resin.
m and a low-density polyethylene were used to obtain the following composition. Using this composition, the inner diameter was 200 mm as in Example 1,
A cylindrical body having an outer diameter of 208 mm was extruded. In addition, 16 notches on the outer periphery were formed at a depth of 2 mm and at equal intervals. This tubular body was cut into a length of 190 mm and used as the core of the PP band for packing in the same manner as in Example 1. However, this was no inferior to the conventional core made of paper tube. In addition, it passed the same compression test as in Example 1, and after use of the PP band for packing, it was bent at the pair of notched portions by being crushed, and became flat and reduced in bulk.

Example 3 An old magazine cut into an approximately 1 cm square was used as paper, and a used PP band was used as a thermoplastic synthetic resin.
m and a polypropylene-based copolymer were used to obtain the following composition. Using this composition, a rectangular plate having a length of 700 mm, a width of 190 mm and a thickness of 2 mm was prepared. Next, a hook having a constricted portion is formed at one end of the rectangular plate, and the other end includes a wide portion wider than the width of the hook and a narrow portion substantially equal to the width of the constricted portion. Notches were formed.
However, the dimension from the constricted part to the narrow part was 628 mm. Then, the plate was rolled into a cylindrical shape, and the hook was fitted and locked so as to be fitted and locked in the notch, and used as a winding core. At this time, the inner diameter of the winding core was 200 mm.
This core was used as the core of the PP band for packing in the same manner as in Example 1, but it was no inferior to the conventional core made of a paper tube. Then, after using the PP band for packing, the hook portion is removed from the notch, recovered as the original rectangular plate body 1, carried to the manufacturing site of the PP band for packing, and the hook portion is fitted and locked in the notch again. And could be used as a core.

Example 4 As a paper, an old magazine cut into an approximately 1 cm square was used, and a recovered PET bottle crushed chip was used as a thermoplastic synthetic resin to obtain the following composition. Using this composition, the length was 700 mm in the same manner as in Example 3,
A rectangular plate having a width of 190 mm and a thickness of 2 mm was produced.
Next, a hook having a constricted portion is formed at one end of the rectangular plate, and the other end includes a wide portion wider than the width of the hook and a narrow portion substantially equal to the width of the constricted portion. Notches were formed. However, the dimension from the constricted part to the narrow part was 628 mm. Then, the plate was rolled into a cylindrical shape, and the hook was fitted and locked so as to be fitted and locked in the notch, and used as a winding core. At this time, the inner diameter of the winding core was 200 mm. This core was used as the core of the PP band for packing in the same manner as in Example 1, but it was no inferior to the conventional core made of a paper tube. Then, after using the PP band for packing, the hook portion is removed from the notch, collected as the original rectangular plate body 1, transported to the manufacturing site of the PP band for packing, and the hook portion is fitted and locked in the notch again. And could be used as a core.

Example 5 As a paper, an old magazine cut into an approximately 1 cm square was used, and an agricultural vinyl film pulverized chip recovered as a thermoplastic synthetic resin was used to obtain the following composition. Using this composition, the length was 700 mm in the same manner as in Example 3,
A rectangular plate having a width of 190 mm and a thickness of 2 mm was produced.
Next, a hook having a constricted portion is formed at one end of the rectangular plate, and the other end includes a wide portion wider than the width of the hook and a narrow portion substantially equal to the width of the constricted portion. Notches were formed. However, the dimension from the constricted part to the narrow part was 628 mm. Then, the plate was rolled into a cylindrical shape, and the hook was fitted and locked so as to be fitted and locked in the notch, and used as a winding core. At this time, the inner diameter of the winding core was 200 mm. This core was used as the core of the PP band for packing in the same manner as in Example 1, but it was no inferior to the conventional core made of a paper tube. Then, after using the PP band for packing, the hook portion is removed from the notch, recovered as the original rectangular plate body 1, carried to the manufacturing site of the PP band for packing, and the hook portion is fitted and locked in the notch again. And could be used as a core.

[0029]

As described in detail above, the core of the present invention comprises paper, a thermoplastic synthetic resin and a small amount of wax, and the weight of the paper is larger than one half of the total weight of the composition for the core. Since the waste is composed of such a composition, it is divided into burnable garbage in the treatment of waste, and the municipal waste and industrial waste of each municipality can be incinerated.

In particular, if the thin portions are formed in even numbers and are formed at substantially equal intervals and have V-shaped grooves, they can be easily crushed by hand from above and below when reducing the volume after use as a winding core. At the same time, the V-shaped groove is opened at two ends of the winding core and the rest is narrowed, so that the whole winding core is almost completely flattened and the volume can be reduced to the maximum.

Further, the core of the present invention has a substantially rectangular shape because a rectangular plate is formed from the above composition, and the rectangular plate is rounded and its ends are locked.
The function as a winding core is exhibited.

In particular, a hook having a constricted portion is formed at one end on the short side of the rectangular plate, and a wide portion wider than the width of the hook is formed on the other end on the short side of the rectangular plate. A notch consisting of a narrow portion approximately equal to the width of the portion is formed, and the hook portion is fitted and locked in the notch, so that the fitting is very simple and once the fitting is performed. Then, it is difficult to be disengaged and disengaged, the cylindrical state is maintained, and the function as a winding core is exhibited.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a winding core of the present invention.

FIG. 2 is a sectional view showing a state after use of the core of the present invention, wherein (a) is a state before being crushed, and (b) is a sectional view showing a state after being crushed.

FIG. 3 is a perspective view of another embodiment of the winding core of the present invention,
(A) is a rectangular plate, (b) is a rectangular plate having a hook and a notch, and (c) is a perspective view in which the hook and the notch are fitted and locked to form a winding core. It is.

[Description of Signs] 1 Cylindrical body 11 Rectangular plate 2 Thin part 3 Hook part 31 Constriction part 4 Notch 41 Wide part 42 Narrow part

Claims (9)

[Claims] 1. A core composition comprising paper, a thermoplastic synthetic resin and a small amount of wax, wherein the weight of the paper is more than half the total weight. 2. With respect to 100 parts by weight of the thermoplastic synthetic resin,
2. The core composition according to claim 1, wherein the paper comprises more than 100 parts by weight and not more than 300 parts by weight. 3. The core composition according to claim 1, wherein the thermoplastic synthetic resin is an olefin resin. 4. A core formed of a cylindrical body from the composition according to claim 1, wherein the core is formed by the cylindrical body. 5. The core according to claim 4, wherein a plurality of thin portions are formed on an outer wall of the cylindrical body in parallel with an axis of the cylindrical body. 6. The winding core according to claim 5, wherein the number of the thin portions is an even number, and the thin portions are formed at substantially equal intervals. 7. A winding core wherein a rectangular plate is formed from the composition according to claim 1, the rectangular plate is rounded, and its ends are locked. 8. A hook portion having a constricted portion is formed at one end on the short side of the rectangular plate, a notch is formed at the other end on the short side of the rectangular plate, and the hook is notched. 8. The core according to claim 7, wherein the core is fitted and locked. 9. A wide portion having a notch wider than a width of a hook portion,
9. The winding core according to claim 8, comprising a narrow portion substantially equal to the width of the constricted portion.