JPS6071735A - Base cloth for sticky tape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial use! l! 11 The present invention relates to X'j i deep);
The purpose and origin of this is that while δ has not been used conventionally in this field, it uses polyester fibers that are easy to tear and has excellent cutting properties. The goal is to provide the following.

Prior art: Adhesive tapes are widely used in packaging, but one of the requirements for the tape is that the elongation in the warp direction is 10 to 15%. )%, the elongation will be too high and the tearing surface will not get dirty.

In the past, fabrics for adhesive tapes have been proposed using cotton wool, a spun yarn made of rayon cotton for the weft, and fabrics using 1-strand fabric, both of which satisfy the above-mentioned characteristics. It is.

However, the strength of the former (spun yarn) C in wet conditions is 4 compared to wet and dry conditions. ) to 55%, there are thickness unevenness in early II, the surface is not Furazo 1~, and the adhesion of resin (L74) that is adhesive tends to be excessive, etc. In addition, in the review, it is expensive due to the accumulation of months, and the production of 2F culms is Class 2 (, Saluni i" +
J dV) Strong and eliminates the defects of the tongue which decreases by 70-80% 1゜In order to solve these problems, we have developed a non-twisted multifilament I-17- of 140 denier or less.
An adhesive tape base fabric made of a polynisdel fabric, in which the warp is a low-shrinkage non-twisted multi-filament with a denier J: 3 to 8 or more and the weft is a polynisdel fabric with a weft density of 7 threads/cm or more. 1. ” (Japanese Unexamined Patent Publication No. 50-71570) has been proposed. By setting the denier of the warp to 40 denier or less, the warp strength of the adhesive tape can be suppressed to a level that can be cut easily, and by using non-twisted yarn, the warp can be easily cut in succession.
As for the weft, by using a low-shrinkage non-twisted multifilament, it is possible to prevent the adhesive tape from becoming stiffer, which occurs when the solvent is dried and removed after applying the adhesive.

However, even if the above invention is A3, it still has drawbacks such as thickness irregularities in the base fabric, uneven surface, and unavoidable smearing of the adhesive.

According to a prior art similar to the above-mentioned prior art, "The thickness of the threads constituting the weave 1j is less than 0.3 mm.

The weft was returned by 0.3 mm or more. 1] Base for sticky 6-arb 1. ” (Unexamined Japanese Patent Publication No. 52-580 (i7)), but examples include J. Although the elongation has been sufficiently reduced to a certain degree, the adhesive tape C has a sharpness that exceeds the elongation of (the elongation in the thread direction is 49 to 62%, which is 1); After tearing, the cut end has 1-1 tangles, resulting in a beautiful cut 1-1 and 11 knots.

Furthermore, since the thickness of the warp yarn and the weft yarn are different, the same drawback as the previous technique described in JP-A-50-71570 remains.

In addition, in general, in the prior art, whether untwisted yarn or twisted yarn is used, sizing is performed. =j Since this occurs, the scouring process is usually omitted and resin processing is applied immediately after weaving, but as a result, the 911 strength between the resin and the base fabric decreases due to the influence of the residual glue.

Especially in wet conditions! ! IA1 strong low 1. is interesting. The peeling strength between the resin and the base fabric decreases, but it becomes sticky)
When a piece is made, the adhesive tape becomes torn and becomes worse, and the cut ends become ugly.

Purpose of the Invention In view of the problems of the prior art, the present inventor conducted a thorough review and found that 1! It has been discovered that the above-mentioned problems can be solved by using polynisder fibers of a certain constant as warp threads, at a warp weave density in a low range, and with substantially no twisting or slipping. It has arrived.

The present invention (1) Entangled polyester fiber filament 1
- The yarn fineness of 111 yarn consisting of - is 1...5 denier,
Using threads with a total fineness of 30 to 125 denier, a strength of 2.5 g/denier or more, and an elongation of 27% or less at the visible + i eye, the warp weave density is 40 to 70 wood. /inch and is woven with substantially no twist or glue i′ [Claim No. (1)
The adhesive tape is based on the adhesive tape described in Section 1.

Here, the interlacing process refers to a conventionally known interlacing process such as interlace processing or taslan processing.

The single yarn fineness of the yarns made of the polyester fulmarub filamen 1 to 1 to be used is within the range of 1 to 5 deniers.

When C is less than 1 denier, fuzz is likely to occur during the entangling process. If it exceeds 5 denier, the entangling property will be lowered during the interlacing treatment, and therefore the weaving will not proceed smoothly. The LC adhesive tape will tear 1'l or drop.

The total fineness ranges from 30 to 125 deniers. , 3
(If the warp density is less than 1 denier, the strength of the fabric will be too low to be practical when the warp density is 40 to 70 yarns/imbued. If it exceeds 125 denier, it will tear. Too powerful - (Unfavorable,,!1.
'+! l/J: I, range is 50-80 denier.

The strength is more than 2.5 g/denier IC. , 2. ! i
Migram/denier full [, 1, confounding! l! Iλri's comb fluff.

Single thread breakage occurs. For sticky shield Shizo 3. t i1i (
In the case of 1), the strength also depends on the elongation, but it is more preferably in the range of 3.5 to 5.0 grams/signal. If it exceeds 27%, when used as a base fabric for adhesive tape, tear resistance increases and hand tearability deteriorates. Preferably, the product of strength and apparent elongation is in the range of 60 to 90 grams/denier perlene 1-.

The pJ 4+ of the present invention is woven using the yarns specified above as warp yarns, and is woven with substantially no twists or glues. There is no particular restriction on the weft, but like the warp, it is preferably a non-twisting yarn, with a strong warp being J, and a weft being preferable from the viewpoint of the properties of the cut end that can be cut by hand.

The weaving density of the base 11 is within the range of 40 to 70 threads/inch in the warp direction. If it is less than 40 pieces/inch, "1 slippage" may occur. If it exceeds 70 pieces/inch, the tear strength in the warp direction is too stiff and the tearability by hand becomes worse.

Effects of the Invention] As a result of the structure described in detail in the second section, the present invention has the following effects.

(1) By using threads with specified physical properties as warp threads and weaving within a low weaving density range and with virtually no twist or glue, the sizing process can be omitted without impairing weavability. Even though it is a low-density fabric, it does not cause chafing. Also, it is higher than conventional products!
l IiF, 'Ca9 ground base i [can be spelled out.

(2) Compared to conventional products, when applying resin, there is no sizing agent remaining in Y, t, I11, so there is no decrease in adhesion strength between the resin and the base fabric, and the same effect as in b when applying resin. Accept the effect.

(3) As a result of the confounding processed poly■, many confounding points (nodes) are added to the Stelmartinoiramen 1. ) The elongation is reduced 1, 1 In other words, interlace 1 good 50/711. (Two dollars [one tsubun left)
Press conference 11) Elongation decreases by approximately 5% 3. Fabrics using yarns whose apparent elongation has been reduced by approximately 5% due to interlacing treatment as warp yarns are coated with resin! When an adhesive tape is made, the tear strength decreases by about 50%. -/J The decrease in tensile strength in the warp direction is limited to about 10% when polishing the culm, and the strength is sufficient for practical use. 21 is beautiful.

Example The present invention will be explained in detail below with reference to Examples.

Example 1 Polyethylene terephthalate 1 - multifilament 1 - with a total fineness of 75 denier and 24 filaments 1 to 1 was subjected to Taslan processing under normal conditions. The multifilament has a strength of 3.5 g/denier and an apparent elongation of 22%. Using the multi-fiber F filament for the warp, the total fineness is 100 denier, 48 filament poly'-Bulenz-Leftale-1-malbou filament (strength 5.4
Gram/denier, elongation 32%) was used for the weft, and the weaving density was 50 yarns/inch in the warp direction and 45 yarns/inch in the weft direction, and the fabric was woven without twisting or gluing. Using the obtained gray fabric as a base fabric, a polyethylene film of 60 microns in diameter was melt-extruded and laminated to the front side of the base fabric to perform laminations 1 to 5. Furthermore, a mold release agent was applied to the front side of the base fabric after lamination 1. Adhesive tape was made with acrylic acid resin adhesive (t ”j L/ on the front side). 1
The amount was 6 kg/inch, which was sufficient.

Example 2 Ordinary strips 1' were added to a polyethylene terephthalate multifilament 1 with a total fineness of 70 denier and 24 neiramen 1 to 1.
1 with interlace stitching, strong 1α4,2 genome/denier, see II) $J stretch 1 moxibustion 18% thread. The multifilamen 1~ is used for the warp, and the total fineness is 7;-
denier, 15 filament polyethylene) - phthalate multifilament (strong fM !+, 0 g/
Denier, elongation 38%) is used for the weft, and the weaving density is 5 threads/inch in the warp direction and 48 threads/inch in the weft direction.

It was woven without any glue. 17 based on the obtained gray fabric 11
Using a poly]nidilene film with a diameter of 50 microns, a sticky tape of 1!1k was prepared in the same manner as in Example 1. The hand tearability of the adhesive tape 1q, cutting L1 is also good, fC is good, and the tensile strength is 15 kg/- (border. peeling 1i11
The strongest horn was 1.2 kg / 1.5 ton - J meters 11" (.

Comparative Example 1 Poly J with total fineness of 75'j' Neil, 10 filaments 1~
- Adhesive tape was made in the same manner as in Example 1 except for /j using Brenteleftale 1 ~ Filamen 1 ~ for the warp. lfi, interlaced bamboo, weavability was poor, and the resulting adhesive tape was cut by hand. Sex wasn't good either.

1″b Type Attorney Patent Attorney Former U] Jun Dr. Continued, hr
ljJ ``Nishi Showa 58 II 0JiJ f11 ゛Death of the Director of the Special Shigo Agency゛ Unit ji 1, Indication of the incident 2, Name of the invention J1t I 1゜3, Person making the amendment 1' Relationship with 1 Special W [Applicant 111-Minamihonmachi, Higashi-ku, Osaka City] 11?lt land (++
00) Teijin Co., Ltd. Ne1 Representative: Kisa Oka, Department 4, Agent: Chiyo, Tokyo [[11th Uchisaiwaicho 2'1t]
lI Sora 1ji (Hill Iino) 5. Subject of amendment 'IUIN 4, "Claims" column 6, Contents of amendment As shown in Appendix 1, Claims (1) Polyester that has been subjected to interlacing treatment J, 11 yarn yarn consisting of Mardi filament 1 has a denier of 1 to 5.

Total fineness is 30-125 denier, strength is 2.5 grams/
2. Use threads with an apparent elongation of 27% or less as warp threads, with a warp weave density of 40 to 70 threads/inch,
Adhesive Arp base fabric (2) woven with substantially no twist or glue (2) The product of strength and apparent elongation is 60 to 90 (grams/denier%), within the range of 1 sor permissible requirements ( Adhesive Dave base fabric described in section 1)

Claims (2)

[Claims] (1) Polyester multifilamen treated with paternity 1
The single yarn fineness of the yarn consisting of is 1 to 5 deniers. A yarn with a T8 fineness of 30 to 125 denier, a strength of 2.5 g/denier or more and an elongation of 27% or less is used as the warp, and a warp weave density of 40 to 70% is used. Adhesive tape circumference made by weaving with substantially no twist or glue] 1 (2) The product of the strength and the strength of the 111 expansion is 60.~90 (grams/denier%).