Vinyl chloride resin aggregate particles, process for producing same, and glove obtained using same

Abstract

The present invention provides: vinyl chloride-based resin aggregate particles that can be produced through a heat treatment while inhibiting scale formation within a vessel for the heat treatment and that provide a plastisol with non-infiltrating property and a satisfactory sagging property; a process for producing the particles; and a glove obtained using the particles. The vinyl chloride-based resin aggregate particles of the present invention are characterized in that the aggregate particles have a mean volume particle diameter of 10 to 60 μm, the percentage of particles having a particle diameter of 10 to 60 μm is at least 50 vol. %, and a plastisol containing 100 weight parts of the aggregate particles and 160 weight parts of di-2-ethylhexyl phthalate satisfies the relationship 3≦η70 / η40≦1000 where η40 is the viscosity at a shear rate of 1 s−1 of the plastisol that has been retained at 40° C. for 10 minutes and η70 is the viscosity at a shear rate of 1 s−1 of the plastisol that has been warmed from 40° C. at 10° C. / min. and retained at 70° C. for 3 minutes. The vinyl chloride-based resin aggregated particles are obtained by flocculating a vinyl chloride-based resin through a two-stage heat treatment consisting of a primary heat treatment and a secondary heat treatment.

Description

TECHNICAL FIELD[0001]The present invention relates to vinyl chloride-based resin aggregate particles, a process for producing the same, and a glove obtained using the same.BACKGROUND ART[0002]Sheets, gloves, bags and the like coated with a vinyl chloride-based resin have great mechanical strength, and they exhibit excellent wear resistance, chemical resistance and oil resistance so that they can be used in various fields such as fishery, agriculture, mining industry and the like.[0003]Conventionally, coating of the vinyl chloride-based resin on sheets, gloves, bags and the like has been carried out by spraying or clipping of a plastisol containing vinyl chloride-based resin aggregate particles or a gelled melt prepared by heating the plastisol.[0004]Since a plastisol is a viscous liquid, when it is applied to a fabric or used for dipping, the plastisol may infiltrate into the fabric, sometimes into the back face of the fabric. Similarly, in a case of heating the plastisol, the gelle...

AI Technical Summary

Benefits of technology

The solution effectively prevents infiltration into fabric backfaces, enhances sagging properties, and reduces scale formation in heat treatment vessels, resulting in a lightweight, flexible, and comfortable glove with improved mechanical strength and resistance.

Problems solved by technology

If the plastisol or the gelled melt infiltrates into the back face of the fabric, the flexibility of the coated product will deteriorate considerably to damage the product functions.

In particular, when it is applied to gloves, even if the penetration is local, the obtained gloves will cause discomfort in wearing to the user, and degrade the commercial value.

However, in a case of using the plastisol containing aggregate particles including vinyl chloride-based resin according to Patent document 1, the non-infiltrating property is improved, but the sagging property tends to be inferior to plastisol containing a paste of vinyl chloride-based resin for general-purpose.

When the sagging property of the plastisol is insufficient, in a step of applying the plastisol on a fabric glove or the like that has been mounted on a mold of a hand shape and sagging excessive plastisol, the plastisol will adhere excessively to the fabric glove or the like.

Such a glove on which plastisol adheres too much will be heavy and less flexible, and thus it is less comfortable in use.

In addition to that, in the process as recited in Patent document 1, there is a problem, for example, that filmy resin (hereinafter, this will be called ‘scales’) adheres to the wall, the pulsator or the like in a vessel (e.g., a tank) for heat treatment.

Although the scales can be removed by rubbing with a wooden or plastic spatula, the productivity will deteriorate.

Although the scale can be removed by a high-pressure jet system, it requires special equipment.

However, due to the influence of expansion or the like of the tank material caused by high temperature, there is a necessity of exchanging the lining frequently.

Images