JPH06128838A - Woven fabric as a fondation cloth for adhesive tape - Google Patents

Abstract

PURPOSE:To provide a woven fabric as a foundation cloth for adhesive tape which can be readily cut with hands and can be produced in the continuous form because the fabric is thin, and is suitably used for packaging and masking for aging. CONSTITUTION:In the foundation cloth for adhesive tape where acetate filaments are used as the warp, the acetate filaments have 55 to 300d fineness, 1.4 to 2.0g/d strength and 8 to 23% elongation at single yarn break.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base fabric for an adhesive tape used for packing, masking for curing and the like. More specifically, the present invention relates to a base fabric for an adhesive tape, which has good hand-cutability and is thin, and can be made long.

[0002]

2. Description of the Related Art Conventionally, a muslin fabric using spun yarn has been used as a base fabric for an adhesive tape. However, woven fabrics using these spun yarns have a drawback that it is difficult to make them long because the base fabric woven fabric is thick. In order to improve these drawbacks, a method using low strength polyester fiber or acetate fiber has been proposed.
No. 158784, Japanese Utility Model Laid-Open No. 62-75047 and Japanese Utility Model Laid-Open No. 4-643.

[0003]

However, the method of using a special polyester fiber, such as Japanese Utility Model Publication No. 57-158784 and Japanese Utility Model Publication No. 62-75047, is complicated since it produces a weak polyester fiber. However, there is a problem in that the production cost is very high.
Moreover, the strength of the acetate fiber of Japanese Utility Model Laid-Open No. 4-643 is weak, and it is necessary to increase the number of warps to increase the strength of the base fabric when manufacturing the base fabric of the adhesive tape. However, there was a problem in producing a base fabric for a thin adhesive tape.

[0004]

In view of the above problems, the present invention has reached the present invention as a result of earnest studies in order to develop a base fabric for a cloth adhesive tape which is thinner and has good tearability. . That is, the gist of the present invention is, in a base fabric for an adhesive tape using acetate long fibers as warp, the fineness of the acetate long fibers is 55 to 300 d, the single yarn tenacity is 1.4 to 2.0 g / d, and A base cloth woven fabric for an adhesive tape, which has an elongation of 8 to 23%.

Fibers that are usually used as warp yarns for base fabrics for pressure-sensitive adhesive tapes are required to have yarns with a certain low strength in order to improve the hand-cutting property. Further, in order to make them thin, the single yarn strength is high. It is necessary to use a yarn to form a base fabric fabric with a reduced number of warp yarns. The present inventors have found that the fineness is 55 to 3
It was found that acetate filaments having a fiber strength of 00d and a single yarn strength of 1.4 to 2.0 g / d have this property. It was also found that it is necessary to use one having an elongation of 8 to 23% in order to further improve the hand-cutting property.

The fineness of the acetate filaments is 100.
.About.200 d, single yarn tenacity of 1.6 to 2.0 g / d, and elongation of 8 to 20% are more preferable for improving the tearability and thinness of the adhesive tape.

The acetate filaments used in the present invention are made of ordinary acetate filaments (strength of 1.2 to 1.4 g / d, elongation of 25 to 30%) as warp and 6 to 30% at the time of sizing. It is obtained by performing the stretching process of.

By such a stretching treatment, the strength of the acetate filaments is increased and the elongation thereof is lowered, so that the fibers suitable for the base cloth fabric for adhesive tape of the present invention can be obtained.

When the yarn produced in this way is woven so that the cloth thickness is 0.2 mm or less, in order to improve the hand-cutting property, the longitudinal tensile strength of the base cloth for adhesive tape is It is necessary to have a width of 22 to 30 kg / 5 cm and a longitudinal tensile elongation of 8 to 18%.

[0010]

EXAMPLES The present invention will be specifically described below with reference to examples. [Example 1] Acetate filaments of 120d / 32 filament were wound around a beam at a warp density of 76 filaments / inch, then unwound from the beam and subjected to a 9.7% stretch treatment while performing a sizing treatment. . The strength and elongation of the acetate filaments thus obtained were as shown in Table 1. Furthermore, weaving was performed using polyester fibers having an elongation of 12% and a fineness of 100 d / 24 filament as the weft. Furthermore, this base fabric was subjected to a primer treatment (anchoring with an anchor coating agent), a back surface was laminated with low-density polyethylene, and a release treatment was performed with a silicone-based release agent to prepare a base fabric for an adhesive tape. The base fabric for pressure-sensitive adhesive tape thus prepared had the characteristics shown in Table 2 and was sufficient in strength in spite of being thin and had good hand tearability.

[Examples 2, 3 and 4] Except that the stretch in the sizing step is 13.8% (Example 2), 23% (Example 3), or 24.7% (Example 4). Is
In the same manner as in Example 1, a base cloth fabric for adhesive tape was prepared. The acetate filaments thus obtained have the characteristics as shown in Table 1, and the prepared adhesive tape base fabric has the characteristics as shown in Table 2, and is thin and strong. It was enough and was easy to cut.

[Examples 5 and 6] Acetate filaments of 150d / 39 filament were wound on a beam with 68 warps / inch, and then 11.4% (Example 5) or 19.9% in a sizing step. % (Example 6) to obtain acetate long fibers having the properties shown in Table 1. Further, in the same manner as in Example 1, a base cloth fabric for adhesive tape was prepared. The base fabric for pressure-sensitive adhesive tape thus prepared had the properties shown in Table 2, was sufficient in strength despite being thin, and was easy to cut by hand.

[Comparative Example 1] A base cloth fabric for adhesive tape was prepared in the same manner as in Example 1 except that the stretch in the sizing step was 0%. The acetate filaments thus obtained have the characteristics shown in Table 1, and the prepared adhesive tape base fabric has the characteristics shown in Table 2. However, due to insufficient strength of the warp, the base fabric is The woven fabric was difficult to weave, and the passability of the weaving process was poor. In order to improve the passability in the weaving process, it is necessary to increase the number of warp yarns to increase the strength, but this has the drawback of increasing the thickness.

[0014]

[Table 1]

[0015]

[Table 2]

[0016]

EFFECTS OF THE INVENTION According to the present invention, it is possible to obtain an acetate continuous fiber suitable for a base fabric for an adhesive tape without a complicated process, and the base fabric for an adhesive tape using the acetate continuous fiber has a thickness of It can be made thin and has good hand-cutting properties.

Claims (5)

[Claims] 1. A base fabric for an adhesive tape, comprising acetate long fibers as warps, wherein the acetate long fibers have a fineness of 55 to 300 d and a single yarn tenacity of 1.4 to 2.0 g /
d, and a fabric having an elongation of 8 to 23% are used as a base fabric for an adhesive tape. 2. The acetate filaments have a fineness of 100 to 2
00d, the single yarn tenacity is 1.6 to 2.0 g / d, and the elongation is 8 to 20%. 3. The weft has an elongation of 35% or less and a fineness of 50 to 50.
A polyester fiber of 150d is used, or
The base fabric for an adhesive tape according to claim 2. 4. The base fabric for adhesive tape has a vertical tensile strength of 22 to 30 kg / 5 cm width and a vertical tensile elongation of 8 to 1.
The base cloth woven fabric for pressure-sensitive adhesive tape according to claim 1, wherein the cloth thickness is in a range of 8% and the cloth thickness is 0.2 mm or less. 5. A pressure-sensitive adhesive tape, wherein when producing a base fabric for an adhesive tape using acetate filaments as warp threads, a stretching treatment of 6 to 30% is performed when sizing the acetate filaments of the warp threads. For manufacturing a base fabric for textiles.