JPH01321902A - Production of urethane glove - Google Patents

Abstract

PURPOSE:To improve the durability of the subjective glove by forming a thin film of a urethane emulsion resin on the surface of a glove made of knit fabric, etc., and further coating the outer surface of the formed thin layer with a urethane emulsion resin. CONSTITUTION:A urethane emulsion resin sol having low viscosity is uniformly applied to the upper surface of a raw knit fabric, spread as thin as possible, dried, cooled and punched with a press. The coated faces of the punched glove are bonded together and the glove is turned inside out to face the resin layer to the outside, put on a solid hand mold, fixed to prevent the escape from the mold and applied with urethane emulsion resin. After dripping excess resin, the glove is dried for about 50min to obtain the objective glove.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to an oil- and solvent-resistant glove whose outer surface is coated with a urethane resin, and a method for manufacturing the same.

(Prior Art) Conventionally, the method disclosed in Japanese Patent Publication No. 4'1-13878 has been proposed as a method for manufacturing solvent-resistant gloves having a urethane resin film.

In this invention, cloth gloves that have been made to absorb and retain moisture evenly in advance are attached to a glove manufacturing mold, and this is immersed in a water-reactive urethane resin solution to cause the moisture and urethane resin to react on the surface of the cloth gloves. Forming and fixing a condensed film, removing it from the solution and immersing it in water to promote condensation and fixation,
After taking the gloves out of the water, the gloves are released from the mold and dried, and then the gloves are coated with urethane resin again, either as they are or with the gloves on again, and then taken out and dried for about 24 hours. I'm picking it up.

(Problems to be Solved by the Invention) The above method uses a type containing DMF or the like as the water-reactive urethane resin. DMF (dimethylformamide) is a volatile solvent and is undesirable because if its vapor is inhaled or absorbed through the skin or mucous membranes, it can cause toxic symptoms and disorders such as respiratory tract disorders, skin disorders, and liver disorders.

Therefore, expensive pollution prevention equipment is required to remove DMF from water and air, and the working environment is also unfavorable.

In addition, since it is thickly soaked with water, there is a problem in that it takes a considerable amount of time to dry and consumes a lot of fuel.

Emulsion type products form a film when the water evaporates, so they do not have the above-mentioned problems. However, in the case of knitted stockinette that has been degreased by soaping or the like, it has good water absorption and penetrates significantly, thus losing its commercial value.

In the case of untreated knitted gloves, there may be machine oil on them during knitting, or the oil component contained in the cotton itself will easily repel water-containing materials such as emulsions. Therefore, even if sprinkle coating is performed several times, there may be areas where the coating does not adhere, and the pinholes and coating thickness may become uneven.

Furthermore, when the gloves are commercialized as gloves, there are problems in that the adhesiveness with the knitted material is poor and peeling occurs, making them easy to tear and reducing durability.

In addition, in the case of dip coating, the emulsion permeates through the stitches due to the liquid pressure of the emulsion, resulting in loss of commercial value.

Structure of the Invention (Means for Solving the Problems) The present invention solves the problems of pollution, drying time, and fuel consumption by using an emulsion type urethane resin.
A method is adopted in which a thin film layer of urethane resin is formed on the surface of gloves made of stockinette or the like with a brush, knife, etc., and then a urethane emulsion resin is applied by sprinkling, dipping, etc.

(Function) By adopting the above-described means, the present invention functions as follows. Since urethane emulsion M fat is applied mechanically to the surface of fabrics such as stockinette with a brush or knife, it forms a uniform thin film layer and prevents the urethane emulsion resin from penetrating during the subsequent coating process such as dipping and sprinkling. , and because it blends in well, it creates an even and uniform coating, eliminating the worry of pinholes.

Therefore, the number of sprinkles is reduced and work efficiency is improved.

Furthermore, as described above, since it is applied mechanically to the surface of the knitted fabric using a brush, knife, etc., the adhesiveness to the knitted fabric is improved, and the durability is improved with less peeling.

(Example) An example embodying the present invention will be described below with reference to FIGS. 1, 2, 3, and 4.

First, in the first manufacturing process, as shown in Fig. 1, a roll-shaped knitted fabric 1 is transferred while being rewound, and a low-viscosity sol-like urethane emulsion resin 2 is uniformly rubbed on the top surface with a knife 3. Apply a small amount thinly as if applying the second layer.
As shown in the figure, a resin layer 8 is formed on the outer surface of the knitted yarn 7. In addition to the coating method using the knife 3, it is also possible to use a coating method using a brush, a roll, or a spray.

However, with either application method, fuzzing is prevented,
It is also desirable to apply it thinly so as not to impair the texture of fabrics such as stockinette.

The original fabric 1 has its top surface coated with a thin layer of resin liquid 2 in this way.
is further transferred and enters the dryer 4.

The inside of the dryer 4 is kept at the optimum temperature for drying the resin layer, and by passing through the dryer 4, the moisture in the emulsion applied as described above is completely dried, and the raw material is The so-called fabric 1 has a stiffness and its elasticity is slightly reduced, resulting in a set state, and the fuzz is held down and becomes easier to fit.

Note that in addition to the method using the dryer 4 as described above, natural drying may be used.

The original fabric 1 that has passed through the dryer 4 is further transferred and passed between cooling rolls 5 to be cooled and the resin layer 8 is reliably bonded to the yarn 7. In addition, during the coating process of the resin layer 8, uniform tension is applied over the entire width of the knitted fabric, so that when the coating process is completed, the resin layer 8 is set and there is almost no unevenness in expansion and contraction.

The raw fabric 1 that has passed between the cooling rolls 5 is further transferred, passes between a pair of rollers 6 that reciprocate from side to side, and is transferred downward, where the end pieces are brought together and folded into a layer.

In this case, in the embodiment of the present invention, by coating the emulsion 2 to form the resin layer 8, the original fabric has some stiffness, so the edges can be aligned accurately and folded quickly. .

Next, as a second manufacturing process, when the original fabric 1 is folded to an appropriate thickness, it is cut away from the transferred original fabric (2).

In this case, as mentioned above, after drying the resin layer 8, the original fabric 1
Since it does not expand or deform by itself, there is no need to leave it to remove uneven expansion or contraction, and it can be moved directly to the next press die cutting process.

In this press die cutting, the edges of the folded original fabric 1 are precisely aligned, it is hard to slip, and it has a firmness, so it is possible to cut the folded material 1 accurately according to the shape. According to the method, uniform and accurate glove pieces can be punched out using a press die.

In the next third manufacturing process, two press-cut glove pieces are produced.
The coated surfaces of the resin layer 8 are joined to each other, and the outer periphery is sewn with a sewing machine except for the wrist portion.

In this case as well, since the glove pieces have stiffness and the coated surfaces do not easily slip against each other, the sewing machine can be fed smoothly and the work efficiency can be greatly improved. Note that instead of the sewing machine sewing described above, it is also possible to weld the machine sewing parts by welding or to adhere them using a urethane adhesive that is compatible with the emulsion 2 forming the resin layer 8.

In the next fourth manufacturing step, as shown in FIG. 3, the sewn gloves are turned over so that the resin layer 8 is on the outside, and the gloves are fitted into the three-dimensional hand shape material 9 and locked so that they do not come off. . According to this embodiment, fluffing is suppressed when the urethane emulsion 2 is applied to the surface to form the resin layer 8 in the first manufacturing process, so fluffing is unnecessary. Sprinkle urethane emulsion 10 onto the glove fitted to the mold material 9, and then leave it hanging for an appropriate period of time (about 5 to 10 minutes) to remove excess urethane resin.
Leave it to stand and drip off the excess urethane resin. In conventional manufacturing methods, the urethane emulsion applied to the knitted fabric was easily repelled, resulting in uneven coating, and pinholes were also likely to occur.

Furthermore, since emulsion type urethane resin is used, there is no concern about pollution such as DMF.

Finally, the gloves are dried in the mold 9 at a temperature of about 125°C to 150°C. If it is thickly moistened, it will take a long time, about 24 hours, but in the example of the present invention, it can be sufficiently dried in about 50 minutes.

During drying, as shown in FIG. 4, since the same emulsion 10 as the emulsion 2 constituting the resin layer 8 is sprinkle-coated, the compatibility is good and the resin layer 8 and the coating layer 11 are completely adhered to each other.

Since the resin layer 8 is mechanically applied to the knitted fabric, there is no fear of peeling, and a durable oil- and solvent-resistant glove can be manufactured.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an apparatus used in the manufacturing method of the present invention. FIG. 2 is an enlarged sectional view showing the coating state of the thin film layer of the present invention. FIG. 3 is a schematic side view showing the process of applying urethane emulsion to gloves. FIG. 4 is an enlarged sectional view of the glove after the final stroke. Stockinette fabric 1. Emulsion 2. Cotton thread 7 Urethane coating 8. -J [9, Emulsion 10. Urethane coating 11°

Claims (1)

[Claims] A method of manufacturing urethane gloves by forming a thin film layer of urethane emulsion resin on the surface of a glove made of knitted material or the like, and again applying urethane emulsion resin to the outer surface of the thin film layer.