KR810000079B1 - Manufacturing process of polyester tarpaulin - Google Patents

Abstract

Polyester filament tarpaulin was manufd. from industrial high-strength polyester 500-1500D zero-twist filaments, which were weaved into 8-15 pitches/inch in warp-weft density. The weaving machine comprised friction roller(B), surface roller(C), guide roller(D), and rotation roller in palce of breast beam, in which the surfaces of each rollers were surrounded with gum strops(G) which were treated with synthetic resin having an affinity with polyester fiber and PVC. The weaved polyester cloth was laminated with PVC sheet to give polyester filament tarpaulin.

Description

Method for preparing polyester tarpaulin

Exemplary parts of a loom for practicing the present invention.

The present invention relates to a novel process for producing lightweight and high strength tarpaulins using polyester filaments. Tarpaulin is a kind of waterproof canvas that is used as an industrial sheet or cover, so it is not only required to have light weight but also to have high tear strength, tensile strength, adhesive strength, and wear strength. shall.

The manufacturing methods developed so far in consideration of such characteristics of use, first, weaving 20-30 pieces of light and stomach density using filament 210D / 3 as a yarn, and then treating the binder on both sides to improve adhesion between dough and PVC. And laminating or topping with a PVC composition {hereinafter referred to as known technique (1)}

Secondly, weaving nylon filament 210D / 3 with 100-200 TPM twist on light and weft yarn as a yarn and weaving it into 16-20 pieces and heating it and laminating or doping with PVC composition. Called technology (2)}

The third 16-25 number of polyester spun yarn gave a lecture of about 700 TPM and weaved the light and gas density to 20-30 pieces per inch, and after heat setting, laminating or doping with a PVC composition {hereinafter known as (3) There are a number of ways.

Since the known technology (1) has a large diameter and gas density, the size of the wood is small, the binder must be treated to increase the adhesive strength with the double-sided PVC sheet, and the light and weft yarn is subjected to several guide rollers and heating drums in the synthetic resin coating process. There is a slip phenomenon.

Therefore, the production process is high due to the binder treatment, the weight is not only heavy, but also there is a problem that the shape stability is reduced due to the non-uniformity of the coating resin due to the slip of the light, weft yarn, the known technique (2) when weaving due to the light and low density In addition to the occurrence of jungle, in order to prevent the phenomena of lamination during heating, the process of heat setting at 180 ℃ after weaving is slightly improved, but the fixing effect of roadway is slightly improved, but it is heated at the temperature near the nylon softening point. Although the fastening effect of the wood is slightly improved, the temperature near the nylon softening point is a drawback that the strength of the bubble is significantly lowered, and the adhesion between the air bubbles and the double-sided PVC sheets is slightly improved during lamination due to the space between the wood due to twisting. As the diameter of the thread increases, a thin sheet is attached Severe surface protruding phenomenon of the bubble. As a result, the wear strength becomes weak. In the known technique (3), although the adhesiveness is slightly improved due to the surface structure of the spun yarn, the diameter of the yarn is increased due to the lecture. Therefore, when the PVC composition is thinly applied, the same defects as in the conventional technique (2) occur and are also known as the heating setting process. The same drawback as in technique (2) occurs.

In addition, all of the above known technologies cannot be reduced to light and weft densities due to problems in the weaving technique, so that the size of the wood is not limited and the weight cannot be reduced. The adhesive strength of the fiber could not be increased more than that, and the bubble strength decreased because of binder processing and setting problems, and the tensile strength and tearing strength of the tarpaulin could not be increased. Morphological stability could not be maintained with the use of Pauline.

The present invention is a comprehensive study of the problems described above as a result of using a high-strength polyester yarn in a lead-free state and by converting the loom to prevent the rolling of light, weft yarn to minimize the light, weft density to minimize the size of the wood In addition, it is light and high strength by improving the affinity with the PVC composition layer and maintaining the strength of bubbles at the same time by setting the heat to low temperature enough to dry by treating the slip resistant synthetic resin of light and weft yarn before the heat setting process. It is to be able to manufacture the tarpaulin of bar will be described in detail below.

The yarn of industrial high strength polyester filament 500-1500D shall be lead free, but the warp yarn is used and the weft yarn is used as it is. In the weaving process, in order to prevent the closed end of slip of light and weft yarn, as shown in the example figure, the linear velocity of the air bubble (F) is used by using a roller (A) bearing a bearing instead of the fixed breast beam (Breast Beam). The surface of the conventional Friction Roller, (B) Surface Roller, (C) and Guide Roller (D) can be rotated at the same rotational speed as that of the rubber strop, ( G) was wound up so that when the bubble (F) is wound around the cross beam (cloth beam), (E), it is wound while being strongly gripped so as not to push the weft.

In order to prevent deformation of the weaved bubble F in the subsequent processing process due to light and weft warping, anti-slip agent is treated and heat-set, and both sides of the bubble F are formed by a known method. As a finished PVC composition.

At this time, the anti-slip agent performs a crosslinking role for strong adhesion between the polyester foam (F) and the PVC composition by using a polyacrylic resin having good affinity with polyester fibers and excellent affinity with the PVC composition which is a waterproof coating layer. .

Since the above-described tarpaulin manufacturing method of the present invention makes the surface of the bubble (F) smooth because it is light and weft-free, it is possible to increase the wear strength even if the laminating layer is thin and the process of the twisting process It is possible to simplify the manufacturing process and reduce the manufacturing cost by omission, and even if weaving the light and weft density with a small density of 8-15 pieces, the rubber strip (B), (C), (D) G) Pulling forward while holding the warp and weft strongly, and in the roller (A), unlike the conventional one, the surface friction is shifted to a lesser state, so that the warp and wind the crossbeam (E) in a stable state without giving a flat deformation of the warp. can do.

Meanwhile, the present invention not only prevents slipping of the tissue because the anti-slip agent is treated even when the foam (F) is tensioned in the PVC composition laminating process, and the applied anti-slip agent is a polyester foam (F) and a PVC composition laminating layer. Because it helps the adhesive force with and can maintain a stronger adhesive strength than conventional. Therefore, the present invention can produce a high-strength tarpaulin with a thinner laminating, so that the weight is light, but the cost can be reduced.

EXAMPLE

[1] Yarn Preparation

Industrial high strength polyester filament 800D is called with a sloped PVA composition and the weft is used in a lead free state.

[2) weaving

In the weaving machine, weave the weaving machine into a plain weave with a density of 10 wefts / inch, but convert the loom to replace the breast beam with a bearing roller (A) and replace the friction roller (B), surface roller (C) and On the surface of the guide roller D, a rubber strip G was wound.

[3) Resin Heat Setting]

The foam (F) is treated with a polyacrylic resin solution having good affinity for both polyester fibers and PVC, and then heat-set at 140 ° C.

[4) laminating PVC compositions]

In a known method, a composition of PVC, a plasticizer, a stabilizer, a lubricant, a filler, and the like is made of a PVC roller, and a sheet of the PVC composition is laminated on both sides of the bubble (F).

Compared with the physical properties of the polyester tarpaulin prepared by the present invention and the tarpaulin prepared by the conventional method as shown in Table (1), the tarpaulin prepared by the present invention is light weight, less thick, tensile strength tear strength And adhesion strength is very good.

TABLE 1

Claims (1)

As described above and illustrated in the text, using a non-twisted yarn of industrial high-strength polyester filament 500-1500D, weaving has a light and weft density of 8-15 bones / inch, but by remodeling the loom, a rotary roller (A) instead of a breast beam Synthetic resin which has rubber affinity (G) and (Gum strop) on the surface of Friction roller (B) and surface roller (C) and guide roller (D) and is compatible with polyester fiber and PVC. A method for producing polyester filament tarpaulin which is subjected to anti-slip treatment as a lamination to a PVC sheet by a known method.

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