JP2589728Y2 - Winding shaft core paper tube - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding shaft paper tube, and more particularly, to a cylindrical shaft used as a shaft for winding a material such as a web, a synthetic fiber or a synthetic fiber of a plastic film and its processed product. Related to paper tubes.

[0002]

2. Description of the Related Art Generally, in a process of using a large amount of webs, synthetic fibers or synthetic fibers of plastic films and their processed products, a roll body formed by winding these films, webs, etc. around a cylindrical core is used. It has been used for its use.

That is, such a roll body is supported by inserting a rotating shaft into a hollow portion of a shaft core in a manufacturing process using such a film or a synthetic fabric, and continuously winding a material wound around the shaft core. Had to be able to be withdrawn.
Conventionally, as a shaft core used for such an application, a paper cylinder having a skin made of kraft paper or high-quality paper, that is, a cylindrical paper tube has been used.

Conventionally, such a shaft core is formed by spirally winding a belt-shaped paper or web 2 around a mandrel 1 for forming a shaft core at a predetermined angle, as shown in FIG. At this time, since the web 2 is continuously sent out from the home position, the portion wound around the mandrel 1 gradually advances on the mandrel 1 in the axial direction indicated by the arrow with the subsequent winding.

Usually, a paper core is formed by winding a plurality of webs 2 simultaneously. That is, as shown in part in FIG. 4, a web supply portion for another layer is arranged on the forward side of the portion wound around the mandrel 1,
The other webs 2 sent from each web supply unit are sequentially wound in a different phase.

[0006] At this time, there is no problem when forming a shaft core having a small number of layers, but when forming a shaft core having a large number of layers, the tightening pressure due to lap winding becomes large, so that the inner peripheral surface of the innermost layer is formed. A very large friction is generated between the mandrel 1 and the mandrel 1, and the inner peripheral surface of the tubular portion, which is the winding portion, is rubbed against the mandrel, and a large amount of paper dust is generated.

The paper dust generated in this manner causes problems such as adhering to the shaft core and mixing with the material wound around the shaft core, or deteriorating the surrounding environment. Also,
Such paper dust is also generated when using a roll body in which a plastic film or the like is wound around a shaft made of the paper tube.

That is, when the roll body is used, the shaft core is relatively press-fitted into the rotary support shaft and mounted. Therefore, paper dust is generated due to rubbing with the rotary support shaft at the time of insertion and removal. Therefore, in recent years, for the purpose of preventing the generation of such paper dust, a plastic tube or a paper tube coated with a resin is almost used for this kind of shaft core.

[0009]

[Problems to be Solved by the Invention] However, even when using an extruded pipe such as a PVC pipe, both ends of the conventional shaft made of a plastic pipe must be finished by cutting, which is not suitable for mass production. Therefore, there was a problem that it was expensive. The shaft core made of the plastic tube can be used several times repeatedly, but must be washed each time, and therefore, it is very difficult to collect and reuse it.

Therefore, the shaft made of a plastic tube is
After all, it was disposed of as waste only after one use.
However, it has become more difficult since the disposal of plastics has recently become a problem. In addition, the shaft core made of a paper tube made of a resin coating or the like has a problem that it is very expensive and also has a problem of difficulty in disposal and mass production as in the case of the shaft core of the plastic tube.

In the core made of the resin-coated paper tube, the coated resin undergoes thermal deterioration due to heat generated by friction with the mandrel 1, and the slipping performance is extremely reduced. There was also a problem that various inconveniences occurred.

An object of the present invention is to solve such a conventional problem, and is to use a paper cylinder which is easy to dispose of, and to move it with a mandrel for forming a shaft core. An object of the present invention is to provide a winding shaft core paper tube having improved slipperiness and no generation of paper dust.

[0013]

SUMMARY OF THE INVENTION The present invention relates to a winding shaft core paper tube, which is used as a shaft for winding a material such as a web, a synthetic fiber or a synthetic fiber of a plastic film and its processed product into a roll. It is a paper tube that can be used, and is configured as follows in order to solve the above-described technical problem.

That is, the winding shaft core paper tube of the present invention is:
An innermost layer portion formed by spirally winding a belt-like sheet obtained by attaching a film having good slipperiness and not causing thermal degradation to one surface of the paper with the film positioned inside.
In addition, a film having good slipperiness and not causing thermal deterioration is provided.
It is a reproduction cellulos .

[0015] The winding core paper tube of the present invention is an innermost layer formed by spirally winding a belt-like sheet obtained by laminating regenerated cellulose on one surface of the paper with the regenerated cellulose positioned inside. And a plurality of paper layers in which a band-shaped material made of paper alone is wound around the outer periphery of the innermost layer.

Further, the winding core paper tube of the present invention is formed by spirally winding a belt-shaped sheet in which regenerated cellulose is laminated on one surface of a high-quality paper with the regenerated cellulose positioned inside. An inner layer portion, and a plurality of paper layer portions in which a band-shaped material made of only paper is wound around the outer periphery of the innermost layer portion,
It is also preferable that the belt-like sheet obtained by laminating the regenerated cellulose on one surface of the paper comprises an outermost layer portion formed by winding at least one layer around the paper layer portion with the regenerated cellulose positioned outside.

[0017]

[Function] According to the winding shaft paper tube of the present invention, first,
The innermost layer is a belt-like sheet or web having a film with good slipperiness and no thermal deterioration adhered to one surface of the paper, and the film surface is positioned inside, and spirally formed on the mandrel at a predetermined angle. It is formed by being wound around. At this time,
Since the web is continuously fed from a fixed position, the portion spirally wound around the mandrel for forming the shaft core gradually advances on the mandrel in the axial direction with the subsequent winding.

At this time, the friction between the inner peripheral surface of the cylindrical innermost layer wound around the mandrel and the mandrel is:
The innermost layer inner peripheral surface is made of, for example, regenerated cellulose,
Since the film with good slipperiness is adhered without softening even when heat is generated by friction, generation of paper dust between the inner peripheral surface of the innermost layer portion and the mandrel is suppressed.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a winding shaft core paper tube according to the present invention; 1 and 2
1 shows a winding shaft core paper tube 10 according to an embodiment of the present invention. As shown in the sectional view of FIG. 2, the winding shaft core paper tube 10 of this embodiment has a plurality of paper web layers 1.
Cellophane, that is, regenerated cellulose 12, is adhered to the inner and outer peripheral surfaces of the cylindrical body made of No. 1.

The cellophane 12 uses pulp as a raw material,
A film made of regenerated cellulose formed into a viscose solution by vulcanization, extruded through a slit, desulfurized and formed into a film, and is essentially a type of paper, but does not contain fibers that itself become paper powder. Therefore, no paper dust is generated even if the paper is rubbed, and the sliding property is extremely good, and the sliding performance does not decrease due to heat due to friction.

As a method of actually manufacturing the winding shaft core paper tube 10 having such a configuration, as shown in FIG. 3, a band-shaped sheet having a width W in which the above-described regenerated cellulose 12 is laminated on the surface of a high-quality paper 13 is used. That is, the web 14 is prepared first. Then, the web 14 is spirally wound around the mandrel 1 for forming the core so that the surface of the regenerated cellulose 12 is located inside in the same manner as in the conventional forming method shown in FIG. Is configured.

The web 14 on which the regenerated cellulose 12 is laminated on one surface is spirally wound around the mandrel 1 for a predetermined length to form the innermost layer 15, and thereafter the web 14 is placed on the innermost layer 15. A web made of paper of lower quality than the high-quality paper 13 used for the material 14, for example, corrugated paper or kraft paper, is simultaneously wrapped in the same manner as shown in FIG. A similar web is repeatedly wound in a similar manner to form a paper layer portion 16.

Finally, the outermost layer 17 is formed by winding the same web 14 as the first wound so that the surface of the regenerated cellulose 12 is located outside. At this time, the number of winding layers of the web 14 constituting the outermost layer portion 17 is preferably one or two. The reason is that usually when the web 14 is spirally wound,
There is a slight spacing 18 between adjacent side edges 14a, 14b (see FIG. 4; however, FIG. 4 shows a conventional inner circumferential web 2).
The state when spirally wound is the same on the outer peripheral surface side).

In the winding of the second layer, that is, the upper layer, the web 14 is spirally wound with a shift of half the width W of the web 14, that is, W / 2 pitch. As a result, the regenerated cellulose 12, which is the surface of the lower web 14, is exposed in the spiral space 18 formed by the upper layer, and thus the entire outer peripheral surface is made of the regenerated cellulose 12.

The winding shaft core paper tube 1 thus constructed
In the case of No. 0, the web 14 on which the regenerated cellulose 12 is laminated is spirally wound around the mandrel 1 for forming the core so that the surface of the regenerated cellulose 12 is located inside as in the conventional forming method, and the innermost layer 15 Is configured. As a result, even when the portion spirally wound around the mandrel 1 continues to be wound on the mandrel, the innermost layer of the mandrel 1 becomes regenerated cellulose 12 having a very slippery surface even when the mandrel 1 is gradually advanced in the axial direction. Therefore, it moves on the mandrel 1 without generating a large frictional force.

In the case where a web made of paper alone is further spirally wound on a plurality of sheets having a predetermined thickness on the outer periphery of the innermost layer section 15 wound on the mandrel 1, the winding is performed according to the thickness. The tightening force increases. At this time, in the winding shaft core paper tube 10 of this embodiment,
An increase in the frictional force does not occur due to the improvement in the slipperiness of the inner peripheral surface with respect to the mandrel 1 due to the regenerated cellulose 12, and as a result, the generation of paper dust due to the rubbing with the mandrel 1 can be suppressed.

In this case, as a rule of thumb, the thickness of the paper tube is 5 mm.
When the thickness exceeds 5, the winding force on the mandrel sharply increases.
The effect is particularly exhibited for those exceeding mm.

The reason why the regenerated cellulose is also arranged on the outer peripheral surface in the wound shaft core tube of this embodiment is that the shaft core tube is packed and transported to a user after manufacture or such. This is to prevent paper dust from being generated when the paper tubes come into contact with each other and rub against each other during handling.

[0029]

As described above, according to the winding core paper tube of the present invention, regenerated cellulose that has good slipperiness and does not cause thermal deterioration is applied to at least the inner peripheral surface of the paper tubular body. Since it is made to adhere, the axial movement on the mandrel at the time of its manufacture can be made with very low friction and smooth, and the generation of paper dust can be prevented, and the slipperiness is reduced by the friction. without any, not Rubakari can improve the productivity of the axial core paper tube, re
Because raw cellulose is a kind of paper, this winding shaft
Even if the paper tube is disposed of, including incineration, it will not
It does not occur and does not adversely affect the environment .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a winding shaft paper tube according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of the take-up spindle paper tube shown in FIG.

FIG. 3 is a cross-sectional view showing a web constituting an innermost layer portion and an outermost layer portion in the winding core paper tube of the present invention shown in FIG. 1;

FIG. 4 is a configuration explanatory view showing a state in which a band-shaped paper is spirally wound around a mandrel to form a conventional paper shaft core tubular body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mandrel 10 Winding axis core paper tube 11 Paper web layer 12 Regenerated cellulose 13 Fine paper 14 Web 15 Innermost layer 16 Paper layer 17 Outermost layer

Claims (3)

(57) [Scope of request for utility model registration] 1. An innermost layer formed by spirally winding a belt-like sheet having a film having good slipperiness and not causing thermal deterioration on one surface of a paper with the film positioned inside. part Bei example a winding axis paper tube the film is characterized <br/> be reproduced Serurosu. 2. A method of laminating regenerated cellulose on one surface of paper.
The regenerated cellulose inside the strip-shaped sheet
And the innermost layer formed by spirally winding
Multiple layers of a band-shaped material consisting of paper only wrapped around the inner layer
A winding core paper tube composed of a number of paper layers . 3. A method of laminating regenerated cellulose on one surface of paper.
The regenerated cellulose inside the strip-shaped sheet
And the innermost layer formed by spirally winding
Multiple layers of a band-shaped material consisting of paper only wrapped around the inner layer
Laminated regenerated cellulose on several paper layers and one surface of paper
The regenerated cellulose to the outside,
And wrap it around at least one layer around the paper layer
And an outermost layer portion .