JPS59159349A - Screen gauze for printing - Google Patents

Abstract

PURPOSE:To enhance the passing capacity of ink, by using a monofilament with a denier of 7-30 wherein polyester is dispersed in nylon 6 in a streaked state while the mixing ratio of polyester and nylon 6 is set to a specific range. CONSTITUTION:Polyester and nylon 6 are mixed in a ratio of 10-30pts.wt./ 90-70pts.wt. and the resulting mixture is subjected to melt spinning to prepare a monofilament with a denier of 7-30 wherein polyester is dispersed in nylon 6 in a streaked state of 0.1mum or less. This monofilament is used in all of a weft yarn and/or warp yarn to fabricate a printing screen gauze. The obtained screen gauze is excellent in durability and ink holdability, has good dimensional stability and can be sufficiently used in fine and precise printing. In addition, it can be suitably used in usual printing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a screen gauze for printing that is excellent in durability V1, ink permeability, and stability against moisture according to the MAJ method.

The first type of screen gauze used in screen printing is a gauze fabric made from monofilament fibers, and synthetic fibers made of polyamide or polyester are often used as the raw material.

Naro screen/gauge made from polyamide fibers has good ink passage, beautiful edges, and moderate elongation, so it is suitable for general purposes such as curved surface printing and halftone printing. J-+ is widely used in printing. However, this polyamide fiber absorbs water more than other synthetic fibers.
Suction 1! ia % Expansion and contraction due to dehumidification is f11!1N in water
It has a large value of 2.0 to 3.0% at 1111%, and is suitable for use in screen gauze for delicate and precise printing, where dimensional stability against moisture is particularly important.

Recently, the designs in screen printing have become more delicate and complex, and as the kneading process progresses, η゛1 with a high weave density is used.
As 111 precision lean gauze has been in demand, there has been a strong desire to improve the disadvantage of poor monthly stability of screen gauze made of polyamide fibers.

Therefore, we studied how to improve the dimensional stability of screen gauze and polyamide 17 without impairing the properties of the fine polyamide, and we came up with 1% wood.

-1 rope I-5, misfire [1) 1 is durability +1,・i,・
↓ Passage (excellent and moisture retention: 1-1r・J
iJ: Excellent stability f=Printing river'tree
') j+, To achieve this objective 1: Bo 11 Esthenod disperses in streaks in Nairo/6 (, 2 and 4C,
And the 4N combination ratio of the Boiling King Stell and the Nai J6 is 10 to 30 parts/1) to 0-70 parts part J)
Printing 67-30 denier monochrome fiber 1-1 yarn part of JTI screen gauze, L/L;
Ll is characterized by the fact that it is used for all of the knotweed threads.

1 Ni monophyranone 1 JaJ used in the yarn gauze of the present invention can be obtained by melt-spinning polyester and N-6 in the above-mentioned proportions.
In the case of tb l), polygosteel is necessarily dispersed in the form of two stripes in the middle of iron 6. Polyester is dispersed in streaks (7, so nylon is an advantage of 6).
, stable V1 can be directed 1-Z) and f: is a thing. (Polys'A-full stripes usually have a diameter of 0.11
Most of them are 1 or higher.

This 1,000-thousand-method fiber was developed in Japanese Patent Application Laid-open No. 5 (1973) (i-1).
, 541, 4 (described in the official gazette), r:,
, etc., there are some products that can be made with a fineness of 7-3.
0te:--le and-・There is a certain position. There is.If the fineness of C is less than 7 tenths and J), the strength of the monofilament 5 throat is small f゛, the spinning machine 1 is bad, and the mafushimajima 1 pass vortex f1 is also not good.On the other hand, 30 If you cross Dale------, misfire 1
1J, l monomer [・In fiber, fiber length B
High crystallinity (maf's 11, -
I can't get it.

The nylon 6 of the present invention is made of poly-C-cabramide at a ratio of 1. The components are made of polyamide. This nylon 6 may contain 11 polymeric components in a range (usually 10 mol% or less) that does not have a large effect on the polyamide J, (book!1'!j l'l).For example, enano!lactam 3-, J: U, / -L ykoha completed l"=/acid, cephalic acid, terefluric acid, inonotaric acid, hexahydrochloric acid, fucuric acid, etc. Polymerization V (monomers 1 (may be polymerized) consisting of a combination of S-noamines such as amine 7, quinol+1, di'? Mixed fko mixed d!'Ria.

C) 11 can be obtained. It dust content of this J iron 6 is 1)
The relative viscosity (ηr) of 8% sulfuric acid at 25° (25°) is 2.0 to 40, preferably 2.2 to 35.

One fu ＼ Polyester is polybutylene lentil thalene~l
-(PET), polybutylene/terephthalate-1-(P B
'r) as one component. The first polyester contains a polymerizable diol such as ]-ethylene glycol or butanediol and a dicarboxylic acid such as isophthalic acid within a range that does not significantly affect the basic properties of the polyester (usually 10 mol% or less). A little t? LJt polymerization may also be performed.

4 - one ma1. , PET, P H'FJ'+ y,
L) +t c Lelani 171, Po 1) Polymerize each ester-forming monomer and j: One or more types of polyester may be mixed together. The degree of polymerization of this polyester is 0.4 to 0.4 to
15, preferably in the range 05 to 1.0 r).

If the amount of chill mixed is less than 10 parts by weight, the stability cannot be improved to 1 minute. T: If the amount is more than 30 parts by weight, the fineness unevenness in the length direction of the fibers will be too large, making it unsuitable for screen gauze. The appropriate mixing amount is 10-3
0 parts by weight, preferably 15 to 25 parts by weight. By adjusting the mixing ratio within the range of the present invention, the polyester can be incorporated into the polyamide in the form of fine lines.

The screen gauze of the present invention is made by combining the monofilament fibers mentioned above with all the weft yarns and all the warp yarns with 1.7 c).
Conveniently used for all of the 1st thread of Juken Yo, 1fTi palm 1st method - 4 gauze fabric (r weave - f locoto 17, t: I)
Manufacturing 1. , fl item, child) 1,'-X (-1 thread J)
Roi let Kuchi thread, 1 method stable (11 power Tatsumi t [ro other fiber 4, mountain 1.1 t stool F) and suction/! n! Toki Sufu 11
-7 gauze 11 opening (oh-) ゛cho-7・'ノ) ＼
BiJ-ka11 [-1rono, t)'l K', ly
f Nimono-Fiume/1・When using fiber for yaw 1 yarn
JJ is used for all the 1st yaw threads, and JJ is used for all the 1st threads.

1) 11 notation f: Mononoi Ume ~ 1. Warp yarn of fiber:
1. , i , , EV ml The screen gauze used for the yarn has excellent durability, f co-durability, and I2-ki passing V.
1 and both vertical and 11 directions J'7),'b'
Fixed thickness 1 thickness: □ (+'-4 thickness. Above 1 = Monofilament yarn I yarn or weft yarn once a month, and other yarns using boria El-fiber yarn If. Good f
'1. f durability M, ink passage) 11, and Tade is also 1.
< has excellent stability in the horizontal direction and the f:-1 direction. Matoko, l'l'l Note f-7 Noi Nome>
If 1-41 string is used as the yarn or Koni 1 yarn, and poly R': Losing color 1-ru C1 and C kill.

Misfire...The screen gauze of 1 has 1lAt/l, excellent ink retention of 1'l], and is dimensionally stable ('l is good, so delicate, fl' is dense printing 11) -1-
This can be used in minutes 4. 4. Conventionally, bolia (screen made of fiber glue) 7 gauze is used. Jf ((according to i example l) 1, example sulfur, acid phase 'ttl'lt! l: (], fl , /
TI, S04100 CC125'C,) 2.63
Nylon 6-button F80 Weight% N J: (25”C)0.6
5 Poly J Chire/-il/-Futare-=1・(I) E
T) Chip 20-layer Iit section. After melting this 'M compound at 278"C, extrude it from 11-karat gold with 4 holes of 0.9 to i1+ diameter to 1050".
Wind the threads into 4 yarns by 1 thread at a speed of 1 ft/min, then 3.3
Monofilament of 17 x 12 x 1 x 5 x l>l
m fiber t 7- i'J T,':o same as -1i7ノ,
te −J i o > 6,! :P
E T , T θ) Mononoi of 4 naro 12 tenaires 2. /:.

1 to 1 Tf-r (l 11jj, combined ratio and obtained 1f-monofu)/1.
A small thousand and a fX.

Table 1, E! When + increases, the length of Mt Shao, ) direction fiber p3
: Large spots, unsuitable for use in slurry-1 and gauze.
-8 maf=, spinnability is not good-) f2.

Next, the 1″ monofilament (7k?tt
Use A, B, I)) for all the threads.7
, for the vertical system, go to 7Tt T) o)tI0/6
L No-Fila 8-Me〉・1 Left Bengawa 11, Terme・3iv:Jl,
126 mets.

I'm weaving Konosuri-sasa. 11. Place the obtained 1st-r,-screen gauze in boiling water for 30 minutes in a relaxed state. After IH air drying, -1-1 side 1i'ii is 30C is 111, vertical l
J direction is 4 practice 1['' trial o; S11ζ cut and f2.

1j6 f
%] After the length of the OLM --- Henoguro Shif two,
Temperature 25℃, relative i'! n! degree 6F)% (Ha atmosphere l・
So, -A11-,-:,, Equivalent to the tension when using a gauze shield +76 length -4 Ro6 (1 layer (131F!/f711)
Multiply by T-(^) and read the distance between the marks with a force setometer immediately after loading. Next 47 ■ Heavy river T: stay 2
After 4 hours, the distance between the marks on the screen gauze is 111.
1's ti It, C reading several fko(e,).

Read the distance between the marks after 24 hours of N i' and lf in water at room temperature.
I TJ (r okero screen gauze -3-,
: +Measure the change in the direction of 'j5'' and obtain the results shown in Table 2T
=.

Table 2 The cartilage in Table 2 is clear 1c-1: Sea urchin scree of the present invention
Compared to Nn2 (comparative example) and %3 (conventional product), the growth in the direction of 65% RTT is about 1/3, and it is 1/2 to 1 in water. ．． / 3 T'AI), ・1υ when extremely wet, the change is small -). Mafko, M2's. 1: Huh? In this case, by conveniently using level B where the /l-combination ratio of PET is low, it is not possible to obtain a 1-minute ma'tL stable 4z1.

From the results shown in 1-1 below, it is clear that the thread usage of screen gauze (here, all the yaw threads and /ma f are all the warp threads) First, compared to the conventional nylon screen gauze for Flight 76, I? ll
! It turns out that you can get Yuo 1j Niscreen gauze in Junji (Kokero) law stability ('l).

Claims (1)

[Claims] Polyester is dispersed in nylon G in the form of streaks (7" and I) ↑ I rt and fl'l
RL! The ratio of solution 7 with nylon 6 is 10 to 30 parts by weight/
90 to 70 weight, 7 to 30 degrees F, 7 filament 71, delicate yaw, all threads and/or
A screen gauze for printing that features III ini-ko on the entire length of the fabric.