JPH0646968Y2 - Elastic tape - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an elastic tape used for clothes such as clothes, clothes, sportswear, and underwear, and for imparting elasticity to a part of these clothes. .

<Prior Art> Conventionally, as this kind of elastic tape, one formed by cutting a tape or tape into a plate or film having a rectangular cross section made of polyurethane, natural rubber or synthetic rubber is used. It has been known.

<Problems to be Solved by the Present Invention> The conventional elastic tape described above has the following problems because the surface is smooth.

<B> When sewing the elastic tape, the contact area with the sewing guide is large.

Therefore, the guide is not slippery and the workability of sewing is poor.

Moreover, if the guide is not slippery enough, the insertion amount of the elastic tape will not be stable and the cloth will be in a hung state, and the dimension of the final product will not be stable.

<B> Since the thickness of the elastic tape is almost constant,
The thinner the thickness, the easier it is to crease.

Therefore, there is a disadvantage that the sewing workability becomes difficult before the sewing and wrinkles appear on the clothes after the sewing.

<C> Recently, there is a material in which an inorganic filler is internally or externally added to the material of the elastic tape to improve the slipperiness.

However, in the case of this elastic tape as well, in addition to the problem of <b> mentioned above, there are problems such as an increase in the number of manufacturing steps in the case of external addition and a decrease in the physical properties of the material in the case of internal addition. is there.

<Purpose of Invention> The present invention has been made to solve the above problems, and an object thereof is to provide a stretchable tape which has good sliding during sewing and is hard to be wrinkled. Especially.

<Structure of the Invention> An embodiment of the invention will be described below with reference to the drawings.

<A> Structure of elastic tape Fig. 1 shows an example of the elastic tape 10 according to the present invention.

The stretchable tape (10) is provided with a ridge (30) which is continuously raised on at least one surface of a tape base (20) in the longitudinal direction of the tape base (20).

The tape base 20 and the ridges 30 are integrally formed of the same material.

The manufacturing method will be described later.

<B> Material As the material of the elastic tape 10, for example, polyurethane,
A known thermoplastic elastic body such as natural rubber or synthetic rubber is used.

<C> Shape of ridge The ridge 30 has a hemispherical shape as in the present embodiment, a conical shape, a pyramid shape, or a polygonal cross section, or a shape in which these cross-sectional shapes are continuous in a mountain range shape, etc. Not restricted by.

The ridges 30 are for reducing the contact area with other members, that is, the guide of the sewing device and clothes, and for making the tape base 20 difficult to be wrinkled.

<D> Number of ridges The number of ridges 30 may be one or more, and more preferably two or more.

<E> Example of ridge dimensions Figure 2 shows an enlarged view of the ridge 30.

To show an example of the size of the ridge 30, the hem width L of the ridge is 0.1 mm.
~ 10.0 mm, the height H is 2 to the thickness T of the tape substrate 20
It is a range of 50 times.

The material of the elastic tape 10, the cross-sectional shape of the ridges 30, the number of the ridges 30 formed, the pitch, the dimensions, etc. are selected according to the application of the elastic tape 10.

<F> Manufacturing method The elastic tape 10 having the above structure can be formed by, for example, a known extrusion molding method.

In this extrusion molding method, if a thermoplastic elastic body is continuously discharged from a nozzle having a cross-sectional mouth shape of the elastic tape 10, the elastic tape 10 having continuous ridges 30 as shown in FIG. Can be obtained.

In this case, the mouth shape of the nozzle needs to be shaped according to the cross-sectional shape of the stretchable tape 10 to be molded.

As another manufacturing method, a heat roll pressure processing method can be adopted.

In this method, on one circumferential surface of a pair of heat rolls provided with a heating means, irregularities corresponding to the cross-sectional shape of the stretchable tape 10 to be molded are provided in a ring shape, and a band shape is formed between the pair of heat rolls. This is a method of shaping by passing through a thermoplastic elastic plate.

The method for manufacturing the elastic tape 10 is not limited to the above-mentioned method, and various known molding methods can be adopted.

<Other Embodiments> As shown in FIG. 3, the elastic tape 10 may be formed by providing the ridges 30 on both sides of the tape substrate 20.

Further, if the ridges 30 are formed so as to be offset from each other on each surface of the tape substrate 20, it will be difficult for creases to form.

By providing the ridges 30 on both sides of the tape substrate 20 as in this embodiment, it is possible to handle the elastic tape 10 without worrying about the front and back surfaces.

In addition, at the time of sewing when the front and back surfaces of the elastic tape 10 are sandwiched, there is an advantage that the contact resistance can be reduced and the sewing can be performed smoothly as compared with the case where only one side of the protrusion 30 is provided.

<Effects of the Invention> Since the invention has been described above, the following effects can be obtained.

<B> Since the contact area with the sewing guide can be reduced,
Good slippage.

Therefore, the sewing work can be performed smoothly.

<B> Since the sliding between the guide and the elastic tape during sewing is good, the dimensions of the final product are stable.

<C> The presence of the ridges makes it difficult for the elastic tape itself to crease.

<D> It is not necessary to use a special additive or the like in order to improve sliding as in the conventional case.

Therefore, the manufacturing process is not complicated and the physical properties of the thermoplastic elastic body are not impaired.

<E> By selecting the material, the cross-sectional shape of the ridges, the number of ridges, etc., it is possible to obtain an optimal elastic tape according to the application.

<F> Since the ridge is formed integrally with the stretchable tape, the forming process is easy.

[Brief description of drawings]

 FIG. 1: Perspective view of elastic tape according to the present invention FIG. 2: Enlarged sectional view of elastic tape FIG. 3: Explanatory drawing of other embodiment

Claims (1)

[Scope of utility model registration request] 1. A stretchable tape, comprising a thermoplastic elastomer tape-shaped article, which is formed by integrally molding a continuous ridge along at least one surface of the tape-shaped article along the longitudinal direction of the tape-shaped article.