JP2010115343A - Curtain loaded with weight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weighted curtain which has weights fulfilling basic function as weights sufficiently even if it is a weighty thick curtain, prevents the suspended curtain fabric from rolling up, can beautifully keep pleats and wavy shape, has no problem on environment nor on safety and health, furthermore, prevents malfunction of a magnetic sensor in inspections to see if a sewing needle remains through a magnetic sensor after sewing the curtain. <P>SOLUTION: In the weighted curtain 1 whose hem is set with weights 4, the weights are characterized by being made of zinc which has a specific gravity of 6.5-7.5 and magnetic permeability of less than or equal to 1.00 μ. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a curtain for interior use. Specifically, the weight that keeps the wrinkles and wave shape beautiful, has no environmental problems and safety and health problems, and does not cause the magnetic sensor to malfunction in the residual inspection of the sewing needle using the magnetic sensor after sewing the curtain. Relating to the loading curtain.

Conventionally, weights have been inserted into the hem of the curtain body in order to keep the wrinkles and wave shape of the suspended curtain fabric beautiful and to prevent the curtain from being rolled up by the wind. As such a weight, a large number of small pieces made of lead are used at predetermined intervals. Lead is suitable as a weight because of its high specific gravity, and lead has the advantage that it is difficult to damage the fabric of the curtain. However, since lead is toxic, there are concerns about adverse environmental effects during production and disposal.

Therefore, in recent years, weights made of materials other than lead have been studied. For example, Patent Document 1 discloses a weight using stainless steel. Since stainless steel is not toxic, it has little negative impact on the environment. However, stainless steel is not only expensive, but also has a problem of poor workability due to its hardness. Furthermore, when sewing the curtain, a sewing needle is naturally used. However, it is necessary to inspect the residual sewing needle by applying the stitched curtain to a meter reading machine using a magnetic sensor. If the weight sewn into the hem of the curtain at the time of the residual inspection has a metal part such as stainless steel, when the curtain is put on the meter reading machine, the meter reading machine detects and reacts to the metal part of the weight. This causes the operation and decreases the detection accuracy of forgetting to leave the needle.

Furthermore, in order to prevent malfunction of the meter reading machine, a weight made of a nonmagnetic material has been studied. For example, Patent Document 2 discloses a weight using glass or ceramics, Patent Document 3 discloses a weight using synthetic resin, and Patent Document 4 discloses a weight using FRP (glass fiber reinforced synthetic resin). Yes. However, all the weights are insufficient in weight, and there is a problem that a thick curtain cannot function as a weight, and the shape cannot be kept beautiful.
JP 2003-245193 A JP 2003-102615 A JP 2006-320627 A JP 2006-141895 A

The present invention has been made in order to solve the above-mentioned problems, and the problem is that the weight function, which is the basic performance of the weight, can be fully exerted even when the heavy curtain is loaded. The lowered curtain fabric does not roll up, keeps the wrinkles and wave shape beautiful, and there are no environmental and safety issues, and the sewing needle uses a magnetic sensor after the curtain is sewn. An object of the present invention is to provide a curtain to which a weight is attached so that the magnetic sensor does not malfunction in the residual inspection.

As a result of intensive studies, the present inventor has paid attention to the specific gravity, magnetic permeability and safety of zinc, solves the above problems by using a curtain weight made of zinc, and provides the following means.

[1] A weight-loading curtain, wherein a weight is loaded on a skirt, wherein the weight is made of zinc having a specific gravity of 6.5 to 7.5 and a magnetic permeability of 1.00 μm or less.

[2] The weight loading curtain according to the above item 1, wherein the weight has a U-shape having a diameter of 1 to 5 mm, a width of 10 to 30 mm, and a length of 25 to 60 mm.

[3] The weight loading curtain according to the above item 1 or 2, wherein the weight is foldably loaded into a bag-shaped storage portion provided on both sides of the curtain bottom.

According to the invention of [1], the weight loaded in the curtain hem has a specific gravity of 6.5 to 7.5, so that the wrinkles and wave shape of the suspended curtain fabric can be kept beautiful, and the curtain Can be prevented from rolling up by wind. Even in a thick curtain having a heavy weight, the function as a weight is not lowered if the specific gravity is used. Also, since the magnetic permeability is 1.00μ or less, it is always used after the curtain is sewn, and it is always used to check whether the needle used for sewing remains or not by using a needle meter using a magnetic sensor. In this case, the malfunction is prevented and the detection accuracy of forgetting to leave the needle is not lowered. Furthermore, since zinc is not toxic, it becomes a weight-loading curtain that does not have a problem of environmental impact during manufacturing or disposal.

According to the invention of [2], since the size of the weight loaded in the curtain skirt portion is 1 to 5 mm in diameter and is 10 to 30 mm in width and 25 to 60 mm in width, foreign matters are loaded in appearance. However, the appearance of the curtain can be kept beautiful. In addition, if the size is small, a malfunction can be prevented with a higher probability in the use of the residual inspection of the sewing needle by the meter reading machine. In addition, since the weight is U-shaped, it is easy to load the curtain skirt, and the weight loading curtain has high productivity.

According to the invention of [3], the bag-shaped storage portion provided on both sides of the curtain hem part is loaded with a weight so that it can be bent, so that the curtain fabric wrinkles and wave shapes can be suspended with appropriate tension. The curtain silhouette becomes beautiful. Moreover, the space | interval which can be bent by a curtain is easily securable in the position between weights.

The present invention will be specifically described below. FIG. 1 is an enlarged schematic view showing the bottom of the weight loading curtain (1) of the present embodiment.

The weight loading curtain (1) according to the present invention is not limited as long as it can sew a bag-like storage part capable of loading the weight (4) at the curtain skirt, and a known knitted fabric made of natural fibers or synthetic fibers is used. Can do. Preferably, a woven fabric made of a synthetic fiber is preferable from the viewpoints of functionality such as washing resistance, economy, and appearance.

The weight (4) loaded on both sides of the curtain skirt according to the present invention is made of zinc having a specific gravity of 6.5 to 7.5 and a magnetic permeability of 1.00 μm or less.

Like the conventional lead weight, the weight (4) made of zinc has a high specific gravity of 6.5 to 7.5. By loading several curtain skirts at equal intervals, the suspended curtain fabric can be kept beautiful in wrinkles and wave shapes, and the curtain can be prevented from being rolled up by wind. When the weight (4) is light, it is difficult to give the curtain a natural stretch, and the wind is likely to roll up. Furthermore, the weight (4) made of zinc with the specific gravity keeps the hanging curtains and wave shape beautiful even when they are loaded into heavy heavy curtains such as light-shielding curtains and soundproof curtains. be able to.

Conventionally, lead used in weights is toxic, and there has been concern about adverse environmental effects during production and disposal. On the other hand, zinc constituting the weight (4) according to the present invention is not toxic, and for humans, deficiency is a problem as an essential element as a kind of mineral. The Environmental Basic Law does not set environmental standards for water quality for zinc. However, the Water Pollution Control Law regulates the concentration of discharged water from factories. However, this is not because of the toxicity of zinc itself, but because the toxicity increases when lead coexists. Therefore, the weight loading curtain (1) loaded with the zinc weight (4) according to the present invention is a curtain free from environmental problems and safety and health problems.

If the sewing needle remains in the curtain fabric after the curtain is sewn, the remaining sewing needle will cause the packaging operator, installer, user, etc. There is a risk of injury. For this reason, the curtain after sewing is inspected by a magnetic sensor to see if the sewing needle remains.

However, when a magnetic metal weight such as stainless steel is used, the magnetic sensor outputs a detection signal in response to the magnetism of the magnetic metal weight even if the sewing needle does not remain. There is a problem that the accurate remaining sewing needle cannot be detected and inspected. In addition, if a weight with hardness such as stainless steel is used, the sewing needle may be damaged when the curtain is sewn, and at that time, fragments of the sewing needle enter the curtain, making it impossible to detect and inspect the sewing needle more accurately. The

Since the weight (4) according to the present invention is made of zinc having a magnetic permeability of 1.00 μm or less, malfunction can be prevented in the residual inspection of the sewing needle. Permeability is the proportional constant μ when the relationship between the magnetic field strength H and the magnetic flux density B is expressed as B = μ H. The larger the value, the easier it is to pass magnetism. Since the magnetic permeability is 1.00 μm or less, even after the weight (4) is loaded in the curtain and the residual inspection of the sewing needle is performed by the magnetic sensor, the magnetism of the weight (4) is small. The sensor does not erroneously generate a sewing needle detection signal, and only when the sewing needle remains, the magnetic sensor reacts accurately and can reliably detect the presence or absence of the sewing needle. If the magnetic permeability exceeds 1.00 μm, magnetism will appear on the weight (4), and the magnetic sensor may react in the residual inspection of the sewing needle, resulting in an erroneous detection result. Can not be prevented.

If the sensitivity of the magnetic sensor is lowered, it is possible to make the weight (4) with higher magnetism difficult to respond to the magnetic sensor, but the sewing needle has a smaller volume compared to the weight (4), and the sewing It becomes difficult to detect the needle with a magnetic sensor, which causes a malfunction.

In addition, the weight (4) according to the present invention is lower in hardness than conventional stainless steel and the like, and the sewing needle is not damaged when sewing the curtain, so that no pieces of the sewing needle are mixed into the curtain. This makes it possible to accurately detect and check the remaining sewing needle.

Since the weight (4) has a diameter of 1 to 5 mm, a small piece size having a width of 10 to 30 mm and a length of 25 to 60 mm, any number can be loaded at equal intervals, and foreign matter is loaded. Therefore, it is difficult to distinguish the appearance and the appearance of the curtain can be kept beautiful. Moreover, even if the residual inspection of the sewing needle by the magnetic sensor is performed due to the small piece size, since the magnetism of the weight (4) is small, the magnetic sensor does not erroneously generate a detection signal, and the sewing needle has higher accuracy. It becomes the residual inspection. If it is larger than this, if it is larger than this size, the skirt of the curtain swells, and the commercial value may decrease. Smaller ones are generally difficult to manufacture.

Since the weight (4) is U-shaped, loading the U-shaped portion under the curtain fabric skirt facilitates manual loading into the curtain skirt, and has high productivity. Curtain (1). Moreover, since the part which touches curtain fabric directly is U-shaped, curtain fabric is not damaged.

Examples of the present invention will be described below, but the present invention is not limited to the following examples.

<Example 1> A woven fabric made of polyester fibers was prepared as a curtain fabric, and a bag-shaped storage part was created by sewing on both sides of the hem. After the curtain fabric is formed with a dry heat set processing machine, the bag-shaped storage part is made of zinc having a specific gravity of 6.0 and a magnetic permeability of 0.80μ, and the size is 2.5 mm in diameter. A U-shaped weight with a width of 20 mm and a length of 35 mm was loaded to create a weight loading curtain.

<Example 2> A weight-loading curtain was obtained in exactly the same manner as in Example 1 except that the weight had a diameter of 1.5 mm and was U-shaped having a width of 20 mm and a length of 35 mm.

<Example 3> A weight-loading curtain was obtained in the same manner as in Example 1 except that the weight was 4.5 mm in diameter, U-shaped having a width of 20 mm and a length of 35 mm.

<Comparative Example 1> A weight loading curtain was obtained in exactly the same manner as in Example 1 except that the weight was loaded with a specific gravity of 11.3 and a magnetic permeability of 0.99 µ.

<Comparative Example 2> A weight loading curtain was obtained in exactly the same manner as in Example 1 except that the weight was loaded with stainless steel having a specific gravity of 7.9 and a magnetic permeability of 1.00 μm.

<Comparative Example 3> A weight loading curtain was obtained in exactly the same manner as in Example 1 except that the weight was loaded with a specific gravity of 1.7 and a magnetic permeability of 1.00 µm.

Each weight loading curtain obtained as described above was examined for shape stability and accuracy of the sewing needle residual inspection based on the following evaluation method. The results are shown in Table 1.

(Shape stability test) Each curtain was hung, and the state where it was turned up by a kite, wave shape, or wind was visually evaluated according to the following criteria. A: A wave on a ridge or an arc is recognized, and it does not turn up greatly due to wind. ○: Waves on the ridges and arcs are recognized, but they are slightly turned up by the wind. Δ: Waves on the ridges and arcs are not recognized, and the waves are not greatly turned by the wind. ×: Waves on the ridges and arcs are not recognized, and the waves are enlarged by the wind.

(Accuracy test for residual inspection of sewing needle) 0 to 3 sewing needles are intentionally inserted into 10 curtains, applied to a meter-reading machine, the remaining metal piece is detected, and the accuracy of the residual inspection of the sewing needle is obtained. Evaluation was made according to the following criteria. ○: Number of insertions = number of detections Δ: Number of insertions = number of detections ± 2 or less ×: Number of insertions = number of detections ± 3 or more

As is clear from Table 1, the curtains of Examples 1 to 3 were all non-toxic, and were weight-loaded curtains having excellent shape stability and accuracy of the sewing needle residual inspection.

On the other hand, Comparative Example 1 was toxic, and Comparative Example 2 was insufficient in accuracy of the residual inspection of the sewing needle. Further, Comparative Example 3 has a problem that the weight is insufficient and the shape cannot be kept beautiful.

It is the schematic which expanded the weight loading curtain skirt part concerning one Embodiment of this invention.

Explanation of symbols

1 ……… Weight loading curtain 2 ……… Curtain rail 3 ……… Bag-shaped storage part 4 ……… Weight

Claims (3)

A curtain with weights loaded at the hem, wherein the weights are made of zinc having a specific gravity of 6.5 to 7.5 and a magnetic permeability of 1.00 μm or less. The weight loading curtain according to claim 1, wherein the weight has a U-shape having a diameter of 1 to 5 mm, a width of 10 to 30 mm, and a length of 25 to 60 mm. The weight loading curtain according to claim 1 or 2, wherein the weight is foldably loaded into a bag-like storage portion provided on both sides of the curtain hem.