JPH11335942A - Base fabric for adhesive tape and processed fabric for adhesive tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a base fabric for adhesive tapes, having excellent breakableness by hands and excellent water resistance and capable of being woven in high productivity by the use of a conventional loom by using polyester multi-filament processed yarns and flat yarns as warps and wefts, respectively. SOLUTION: This base fabric for adhesive tapes is obtained by using polyester multi-filament processed yarns (count: preferably 50-150 denier) and flat yarns (count: preferably 200-400 denier) as warps and wefts, respectively, among the warps and the wefts. Staple fibers or Tetron (R)-rayon yarns or Tetron- cotton yarns are preferably used as the warps, and the flat yarns are preferably used as the wefts. Laminate layers 4 are preferably formed on the surface or both the surfaces of a base fabric 1 for the adhesive tapes to prepare the processed fabric 5A for the adhesive tapes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base cloth for a pressure-sensitive adhesive tape suitable for a pressure-sensitive adhesive tape and a work cloth for the pressure-sensitive adhesive tape.

[0002]

2. Description of the Related Art In recent years, there has been a great change in packing and packing methods, and adhesive tapes have been widely used in place of packing with ropes or strings. The pressure-sensitive adhesive tape has been formed by laminating one side of a base fabric woven of warp and weft with a polyethylene film, and then applying an adhesive to one side on which lamination is not performed. Conventionally, a base fabric for an adhesive tape used for an adhesive tape is one in which a warp yarn and a weft yarn are made of a staple yarn, and as shown in Japanese Patent Publication No. 41189/1992, a warp yarn and a weft yarn are made of a flat yarn. Had been provided. In particular, the demand for pressure-sensitive adhesive tapes using staple yarn is increasing in each household and industry.
Since the adhesive tape is characterized by being cut by hand without using a pinch or a cutter, it is required that the adhesive tape be easy to cut in the horizontal direction or have water resistance.

[0003]

However, the conventional adhesive tape base fabric using a woolen yarn for both the warp and the weft has a problem in water resistance. Further, in the case of using flat yarn for both the warp and the weft, the flat yarn itself is formed in a ribbon shape obtained by slitting a film, and is easily twisted because the cross-sectional shape is not round. Therefore, when used for a long warp, a special beam has to be produced during aging, and there is a problem that it is difficult to perform warping because tension management is difficult. Therefore, productivity cannot be improved because weaving cannot be performed with a conventional loom.

The present invention has been made to solve the above-mentioned problems, and a first object is to increase the productivity by using a conventional loom, and to perform weaving. The ability to maintain or improve the ease of
Moreover, an object of the present invention is to provide a base fabric for an adhesive tape which is excellent in water resistance.

[0005]

Means for Solving the Problems A base fabric for an adhesive tape according to the present invention is constituted as follows in order to solve the above-mentioned problems. In other words, among the warp and weft, using a multifilament of polyester processed yarn for the warp,
It is characterized by using flat yarn for the weft.

[0006] Of the warp and the weft, the suture, the tetron rayon or the tetron cotton is used for the warp, and the flat yarn is used for the weft.

The count of the polyester processed yarn is 50-1.
50d, flat yarn count 200-400
Any characteristic may be used as long as it is d.

[0008] The count of the woolen yarn, tetron rayon or tetron cotton may be 20/1 to 50/1, and the count of the flat yarn may be 200 to 400d.

[0009] Further, the cloth for adhesive tape according to the present invention is characterized in that, among warps and wefts, multifilaments of polyester processed yarns are used for the warp and flat yarns are used for the wefts on one or both sides of the base fabric for the adhesive tape. A laminate layer is formed.

[0010] Further, a work cloth for an adhesive tape according to the present invention is a single-sided or double-sided base cloth for an adhesive tape in which, among warps and wefts, suf yarn or tetron rayon or tetron cotton is used for the warp and flat yarn is used for the weft. A laminate layer is formed on the substrate.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

The base cloth 1 (hereinafter referred to as base cloth) for an adhesive tape according to the present embodiment comprises a warp 2 and a weft 3 as shown in FIG. In order to improve the hand-cutting property in the horizontal direction, it is desirable to use a warp yarn 2 having a low strength and a low elongation, and it is desirable to use a weft yarn 3 in consideration of water resistance.

For this reason, the warp yarn 2 is made of fibers having lower strength and elongation than ordinary polyester, for example, a polyester processed yarn count 50d or 150d (preferably 75d to 75d).
100d) is preferable, and in order to use a conventional loom, a multifilament is desirably used so that tension management can be easily performed. In the case of suf yarn, tetron rayon or tetron cotton, all
/ 1 to 50/1 (preferably 30/1 to 40/1) can be used.

As the weft 3, a base yarn 1 having a small thickness and water resistance and having a large value of high elongation, for example, a tape yarn formed by drawing a slit of polypropylene or polyethylene ( Flat yarn), preferably polyethylene flat yarn 200-400d (preferably 250d-350d)
Can be suitably used.

[0015] Table 1 shows that the applicant has obtained a base cloth 1 of the adhesive tape.
3 shows the results of the strength and elongation of various selected yarns for conducting a physical property test, a weaving test, and the like.

According to this, suf yarn, polyester processed yarn, or tetron rayon has a smaller value of the strength and elongation than flat yarn. From this,
It is understood that it is desirable to use a staple yarn, a polyester processed yarn or Tetron rayon for the warp yarn 2 and to use a flat yarn for the weft yarn 3.

[0017]

[Table 1] The base fabric 1 formed by using the warp 2 and the weft 3 described above,
The warp 2 is warped by a warper, and the weft 3 is woven by weft insertion by an air jet loom or a rapier loom. At this time, the density of the polyester yarn used for the warp 2 is 10 to 60 yarns / inch (preferably 30 to 50 yarns / inch), or the density of tetron rayon or tetron cotton, or the woolen yarn is 20 to 50 / inch. (Preferably 30 to 45 yarns / inch), and the density of the flat yarn used for the weft 3 may be 10 to 35 yarns / inch, preferably 16 to 25 yarns / inch. .

The woven base fabric 1 is, as shown in FIG.
A polyethylene film is extruded from both sides of the base fabric 1 to form a laminate layer 4 to form a work cloth 5A. As shown in FIG. 3, the laminate layer 4 may have a laminate layer formed only on one side. The adhesive tape T is formed by applying the adhesive layer 6 on one side of the work cloth 5A that has been subjected to double-sided lamination, and the work cloth 5B that has been subjected to single-sided lamination is bonded to the side of the laminate layer 4 that is opposed to the lamination layer 4. The adhesive layer T is formed by applying the agent layer 6.

The adhesive tape T manufactured as described above is
Whether or not weaving can be performed with a conventional loom, and whether or not the ease of hand cutting in the horizontal direction is at least higher than before,
Also, whether the improvement of water resistance can be achieved as its purpose,
Various tests are performed using a base fabric 1 woven using various types of warp yarns 2 and weft yarns 3 and a work cloth 5 obtained by laminating the base fabric 1.

The samples of the warp 2 and the weft 3 used for the base cloth 1 and the work cloth 5 to be carried out this time are as shown in Table 2, and a weaving test was first performed in an air jet loom. In Table 2, comparative examples which have been conventionally provided are indicated by asterisks (*).

In a weaving test, weaving was performed at a high speed of 720 rpm in an air jet loom, and it was confirmed that the productivity was the same as that of a normally used loom. However, in this case, since the flat yarn is used for the weft 3, the flight state of the flat yarn is poor even if the air pressure of the weft insertion is increased and the flat yarn does not reach the right end, so that the auxiliary nozzle is provided between the accumulator and the main nozzle. Was decided. In other words, it has been found that although it is difficult to warp the flat yarn using the warp 2, it is possible to insert the weft 3 by improving a part of the loom.

[Table 2] A physical property test was performed on the sample. The results are shown in Table 3 (for base cloth 1) and Table 4 (for work cloth 5).

[Table 3] Regarding the above results, the actual products (samples A, B, C, D, and E) of the base fabric using the polyester processed yarn, the tetron rayon, the woolen yarn, and the weft 3 using the flat yarn for the warp 2
Both the warp 2 and the weft 3 have a better balance of the elongation in the warp direction and the weft direction as compared with the comparative example (sample E) in which the base fabric using the souff yarn is used. That is, both the strength in the transverse direction and the elongation are large, and the strength in the vertical direction is almost the same or smaller. Therefore, a rip (cut in the vertical direction) that occurs when the hand is cut in the lateral direction is less likely to occur. Moreover, the strength in the vertical direction is equal to or smaller than the comparative example. Therefore, the hand-cutting property is almost the same as or higher than the conventional one.

[0022]

[Table 4] As a result of Table 4, as for the laminated work cloth, an actual product (sample E) obtained by laminating one side using a warp 2 as a woof and a weft 3 as a polyethylene flat yarn.
1) is different from the comparative example (sample F1) in which both sides of the warp 2 and the weft 3 are laminated on one side by using a woolen yarn.
In the case of the product using the soup yarn and the weft 3 using the polyethylene flat yarn, the strong elongation in the warp direction is small, the strong elongation in the weft direction is large, the hand-cutting property is good and the tearing is hard to occur. Is shown.

Further, a comparative example (sample E2) in which both sides of the warp 2 and the weft 3 were laminated using flat yarns (sample E2) and a double-sided laminated product in which both sides of the warp 2 and the weft 3 were laminated using a flat yarn. Compared with H), the strength in the vertical direction is almost the same, the sample M has a lower elongation, and the reverse elongation is higher.
Therefore, it can be understood that the hand-cutting property is good as the elongation in the vertical direction is small.

The results of the water absorption test performed by the water absorption test apparatus show that the warp 2 and weft 3 using flat yarns have low water absorption and are excellent in water absorption, and the warp 2 and weft 3 use souff yarn. Has been found to have high water absorption,
It was found that those subjected to double-sided lamination had lower water absorption and were superior to those subjected to single-sided lamination.

From the above results, those using flat yarns for both the warp 2 and the weft 3 have excellent water resistance, but the warp 2 cannot be used in conventional looms and a special loom must be used. , Increasing productivity without increasing productivity. In addition, the warp 2 and the weft 3 that use the woolen yarn are prone to cracking. Therefore, the construction of the base fabric which has good hand-cutting properties and can be woven by only partially modifying the conventional loom is advantageous in that a polyester yarn or a staple yarn is used for the warp 2 and a flat yarn is used for the weft 3. It has been found.

Although no data is shown in the weaving test this time, instead of the polyester processed yarn used for the warp 2, tetron rayon, which is a blend of tetron and rayon, or tetron cotton, which is a blend of tetron and cotton. It has been proven that the adhesive tape formed can maintain the ease of hand cutting easily as compared with the conventional tape using both warp 2 and weft 3 using souff yarn. Moreover, both tetron rayon and tetron cotton can be woven using a conventional loom.

[0027]

According to the present invention, the base fabric for an adhesive tape comprises:
Of the warp and weft, multifilaments of polyester processed yarn are used for the warp and flat yarns are used for the weft. The warp is formed with lower strength and lower elongation than the weft, and because it is formed of multifilaments, it can be woven only by partially modifying a conventional loom, and the weft has excellent water resistance. Therefore, it is possible to form a pressure-sensitive adhesive tape which is easy to cut in the lateral direction, has good productivity, and is excellent in water resistance.

The adhesive tape base fabric is formed of a warp yarn and a weft yarn, using a woolen yarn or tetron rayon or tetron cotton as a warp yarn, and using a flat yarn as a weft yarn. In addition to being formed with lower strength and lower elongation than warp and weft, it can be woven with a conventional loom, and the weft has excellent water resistance. Therefore, it is possible to form a pressure-sensitive adhesive tape which is easy to cut in the lateral direction, has good productivity, and is excellent in water resistance.

The pressure-sensitive adhesive tape-treated cloth according to the present invention has a laminated layer on one or both sides of an adhesive tape base cloth using a polyester-processed multifilament as a warp and a flat yarn as a weft among warps and wefts. Is formed. The warp is formed with lower strength and lower elongation than the weft, and can be woven by a conventional loom, and the weft has excellent water resistance. Therefore, it is possible to form a pressure-sensitive adhesive tape which is easy to cut in the lateral direction, has good productivity, and is excellent in water resistance.

[0030] The work cloth for the adhesive tape is prepared by laminating one or both sides of a base cloth for an adhesive tape using a warp yarn or a weft yarn, a suf yarn or tetron rayon or tetron cotton, and a weft yarn of a flat yarn. A layer is formed. The warp is formed with lower strength and lower elongation than the weft, and can be woven by a conventional loom, and the weft has excellent water resistance. Therefore, it is possible to form a pressure-sensitive adhesive tape which is easy to cut in the lateral direction, has good productivity, and is excellent in water resistance.

[Brief description of the drawings]

FIG. 1 is a partially enlarged view showing a base fabric according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view of a processed cloth obtained by performing a double-sided laminating process on the base cloth of FIG. 1;

FIG. 3 is a cross-sectional view of a work cloth obtained by subjecting the base cloth of FIG. 1 to one-side lamination processing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base cloth 2 ... Warp 3 ... Weft 4 ... Laminate layer 5A, 5B ... Work cloth 6 ... Adhesive layer

Claims (6)

[Claims] 1. A base fabric for an adhesive tape, wherein, among the warp and the weft, a multifilament of a polyester processed yarn is used for the warp and a flat yarn is used for the weft. 2. A pressure-sensitive adhesive tape base fabric comprising a warp yarn and a weft yarn, wherein a warp yarn is a suf yarn or tetron rayon or tetron cotton, and a weft yarn is a flat yarn. 3. The count of the polyester yarn is 50 to 50.
150d, flat yarn count 200 ~ 40
The base fabric for an adhesive tape according to claim 1, wherein the base fabric is 0d. 4. The adhesive tape according to claim 2, wherein the count of said staple yarn, tetron rayon or tetron cotton is 20/1 to 50/1, and the count of the flat yarn is 200 to 400d. Base cloth. 5. A laminate layer is formed on one or both sides of a base fabric for an adhesive tape using a multifilament of a polyester processed yarn as a warp and a flat yarn as a weft among warps and wefts. Worked cloth for adhesive tape. 6. A laminate layer is formed on one or both sides of a base fabric for an adhesive tape using a warp yarn or a tetron rayon or tetron cotton as a warp and a flat yarn as a weft among warps and wefts. Work cloth for adhesive tape.