JP2002096975A - Bobbin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bobbin capable of being incinerated for disposal without causing regulation problems or practical problems relating to combustion temperature and environmental sanitation. SOLUTION: The bobbin (double-flange bobbin 3 or single-flange bobbin 5), particularly for machine sewing threads, is made of composite materials comprising plastics and paper.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin.

[0002]

2. Description of the Related Art A sewing thread for domestic or industrial use is wound around a bobbin and set on a sewing machine for use. This bobbin has a cylindrical shape, has a hole in its shaft core, has a flange at both ends or one end, and places the brim portion on a bobbin of a sewing machine. Used. Such wound bobbins are usually manufactured by injection molding polypropylene or other plastic material.

[0003] Such wound bobbins are disposed of as waste after use. In this case, if the wound bobbin made of a plastic material is directly burned in an incinerator or the like, there is a possibility that the burning temperature is high and the incinerator is damaged, or a harmful effect such as environmental pollution due to the combustion gas is caused. Therefore, it is desirable that such plastic wound bobbins are discarded as combustible waste such as paper as waste to be disposed of without burning.

On the other hand, a simple cylindrical bobbin is used as a bobbin core material without using a sewing machine. Since the core material other than the sewing thread does not have a brim, a relatively hard paper material such as cardboard can be processed into a cylindrical shape and used without depending on a molded product. The spool core made of such a paper material is discarded as general household waste after use.
In this case, even if the pure paper material is incinerated, problems such as combustion temperature and harmful gas due to combustion hardly occur.

[0005]

However, regarding the disposal of the plastic bobbin, it is very troublesome to separate the bobbin for sewing thread made of plastic after use from the burning waste such as paper. .
For this reason, at present, in many cases, the waste is burnt and disposed together with other combustion waste. However, this may cause incinerator deterioration and environmental pollution problems as described above. In addition, if the paper is not separated from paper or the like so as not to be burned and disposed, a problem of a waste space occurs.

On the other hand, such a bobbin for a sewing thread with a brim is difficult to form from a combustible pure paper material because of its shape.

The present invention has been made in consideration of the above-mentioned prior art, and minimizes the problem of combustion temperature and environmental hygiene at the time of disposal to minimize the problems in legal regulations and the actual social background and real life. It is intended to provide a bobbin that can be incinerated without any problem.

[0008]

According to the present invention, there is provided a wound bobbin comprising a composite material of plastic and paper.

[0009] According to this configuration, a composite material is formed by filling a plastic into paper and made into an inseparable (inseparable) material, the composition ratio is appropriately selected, and injection is performed according to the bobbin shape, structural conditions, and the like. The bobbin of various shapes can be formed by molding or the like. When the wound bobbin is incinerated, the composite material has a composition ratio that does not cause a problem in incineration facilities and the surrounding environment with respect to the burning temperature and combustion gas when the composite material is burned. Compared with conventional plastic wound bobbins, greatly reduces problems such as combustion temperature and combustion gas, and incinerator disposal and environmental hygiene issues comply with laws and regulations and incinerate without practically and practically causing harm. be able to.

According to a preferred application example, the bobbin is a bobbin for a sewing thread formed of a molded body having a brim at an end.

According to this application example, the thread-wound bobbin for a sewing thread with a collar can be manufactured by molding such as injection molding in the same manner as plastic, and after use, there is a practical environmental problem similar to paper. Can be incinerated without producing.

Conventionally, as a core material made of 100% paper, there is a simple material obtained by simply making cardboard or the like into a cylindrical shape. However, since there is no brim, the thread wound state may be broken due to collapse of the wound state. The problem was easy to happen. Such problems can be avoided by applying the present invention to a bobbin with a collar.

[0013]

FIG. 1 shows a bobbin for a sewing thread to which the present invention is applied. (A) shows a double-collar bobbin 3 having a collar 1 at both ends and a hole 2 in a shaft core, and a thread 4 is wound between the collars 1 at both ends. (B) is a brim 1 at only one end
1 shows a single brim bobbin 5 having the following. In any case, the bobbin itself is formed by injection molding using a composite material of paper and plastic.

As the plastic material, for example, polypropylene is used, and the ratio to the total weight is 30 to 50%.
And the rest can be paper material. Instead of or together with polypropylene, other plastic materials such as polyester or polyethylene or other nylon-based resins can be used. As the paper material, recovered waste paper or unnecessary waste such as scraps in the manufacturing process of various paper products can be used, which can contribute to resource recovery and resource saving. In particular, by replacing plastic materials with paper materials to increase the amount, the use of petroleum, which is a finite resource that is valuable globally, can be saved.

By appropriately selecting the weight ratio of such a composite material to the total weight of the plastic portion and the paper portion, the calorie burned when burned can be reduced to, for example, about 11,000 Kcal / kg in the case of a single polypropylene material.
(JIS M8814) about 6000-6500K
cal / kg (50 to 55% of paper), and problems such as incinerator damage due to combustion temperature can be avoided.
Also, with regard to combustion gas, harmful combustion gas from plastics can be reduced to such an extent that there is no problem in environmental hygiene regarding odor and the like.

[0016] Therefore, by using such a composite material of plastic and paper, for example, in the practice of separate collection in municipalities, based on the Waste Disposal Law, the Law for Promoting the Effective Use of Resources, the Container and Other Recycling Law, etc. The wound bobbin of the present invention is treated as a paper material, conforms to laws and regulations, and is incinerated in the same manner as other paper waste without causing incinerator damage in actual use or real environmental health problems. Can be disposed of.

Since such a composite material of paper and polypropylene is commercialized in the market as, for example, plastic pellets containing waste paper for molding, the wound bobbin of the present invention is injection-molded using such a commercially available product. And the like.

[0018]

As described above, according to the present invention, a bobbin shape and a structure are selected by appropriately selecting the composition ratio of a composite material which is inseparable (unseparable) by filling paper into plastic. Depending on conditions and the like, it becomes possible to form bobbins of various shapes by injection molding or the like. When the wound bobbin is incinerated, the composite material has a composition ratio that does not cause a problem in incineration facilities and the surrounding environment with respect to the burning temperature and combustion gas when the composite material is burned. Compared with conventional plastic wound bobbins, greatly reduces problems such as combustion temperature and combustion gas, and incinerator disposal and environmental hygiene issues comply with laws and regulations and incinerate without practically and practically causing harm. be able to.

This eliminates the need for separate collection of the wound bobbins, and also avoids incinerator damage and environmental health problems that would otherwise have been incinerated without separation.

[Brief description of the drawings]

FIG. 1 is a perspective view of a bobbin for a sewing thread to which the present invention is applied.

[Explanation of symbols]

 1: Collar 2: Hole 3: Double collar bobbin 4: Thread 5: Single collar bobbin

Claims (2)

[Claims] A wound bobbin made of a composite material of plastic and paper. 2. The bobbin for a sewing thread according to claim 1, wherein the bobbin comprises a molded body having a brim at an end.