Method for making disposable PVC gloves of uniform thickness

- Jun 24, 2019-

Technical field:

The utility model relates to a disposable PVC glove with uniform thickness, which belongs to the field of PVC gloves.

Background technology:

The production process of disposable PVC gloves includes PVC paste dipping, drooping, plasticizing and forming, cooling and washing, PU dipping, drying, edging and stripping, etc. In the production process, the flow uniformity and plasticizing and forming after paste dipping are important links related to the quality of gloves.At present, three measures are generally taken to regulate the uniformity of paste on the hand mold. One is that the hand mold after dipping the material passes through a certain length of droplet section, so that the residual material drips to the recycling trough, recycling;In addition, the Angle of a series of lead screws at the bottom of the oven can be adjusted to ensure certain inclination of the hand mold entering the oven after droplet, so that the paste flows evenly.It can also reduce the temperature of oven, slow down the plasticizing speed and increase the time of even flow.However, the disposable PVC gloves produced by these technological means still have some defects such as uneven thickness and high pinhole rate.These defects not only reduce the performance of disposable PVC gloves, but also affect the quality of gloves.According to the plasticizing mechanism of PVC and the properties of resin film formation, during the plasticizing process of PVC paste, higher surface tension is formed on the surface of the paste with the evaporation of viscosity reducers, resulting in surface tension gradient.In addition, the presence of unfiltered insoluble particles, iron scraps, grease and other impurities with low surface tension in the paste will also form a certain surface tension gradient, affecting the flow uniformity of the plasticizing process, and thereby affecting the uniformity of gloves.

According to the deficiencies in the above existing technologies, the technical problem to be solved by the utility model is to provide a disposable PVC glove of uniform thickness with simple production and low pinhole rate.The technical solution adopted by the utility model to solve the technical problems is the disposable PVC gloves with uniform thickness, including the glove body, which is characterized in that the glove body is composed of PVC plasticizing layer, flow leveling agent layer and coating agent layer from inside to outside successively.Among them, the coating material is waterborne polyurethane;The material of the fluidized layer is modified polyacrylate, and the best choice is the silicon modified polyacrylate byk-3529 produced by BYK company in Germany.This disposable PVC gloves production technology in the PVC trough liquid first PVC paste resin add flow evenly agent (silicone modified polyacrylate BYK - 3529), including PVC paste resin and liquid flow uniformly agent (silicone modified polyacrylate BYK - 3529) of the proportion of 100 o. 5, through the PVC material slot is the first step and then fingerprint PVC proofing, due to flow uniformly agent (silicone modified polyacrylate BYK - 3529) has a narrow molecular weight distribution, low surface tension and the incomplete mixing capacity and PVC paste resin,Can therefore be part to PVC plasticizing layer to form a single molecule on the surface of membrane, promoted the homogenization of the early forming PVC gloves, reduces the surface tension, slows down the paste viscosity agent in volatile speed, increased the PVC paste resin flow and time, thus improved the flow property of PVC paste resin, in addition, the flow and agent (silicone modified polyacrylate BYK - 3529) also has the function of crosslinking curing after crosslinking can form a thin layer of flow and agent layer, after PVC gloves in waterborne polyurethane containing I3U chute in I3U dip,The PU material on the surface of the hand mold is dried by the PU drying device, and the coating agent layer is formed on the outermost layer of the PVC gloves. Then the edge of the PVC gloves is rolled by the traditional edging process, and finally the PVC gloves are separated from the hand mold by the stripping device.The beneficial effect of the utility model is that the disposable PVC glove has a uniform flow agent layer on the outer surface of PVC plasticizing layer, which can ensure uniform thickness of glove products, significantly reduce defects such as shrinkage holes and pinhole on the glove surface, improve the quality of gloves, and reduce the rejection rate.

Claim: a kind of disposable PVC gloves with uniform thickness, including the glove body, which is characterized by that the glove body is composed of PVC plasticizing layer, flow leveling agent layer and I3U coating agent layer from inside to outside successively.

Abstract: the utility model belongs to the field of PVC gloves, especially relates to a disposable PVC glove with uniform thickness, including the glove body, which is composed of PVC plasticizing layer, flow leveling agent layer and PU coating agent layer from inside to outside successively.This disposable PVC glove has a uniform flow agent layer on the surface of PVC plasticizing layer, which can ensure uniform thickness of glove products, significantly reduce defects such as shrinkage holes and pinhole on the glove surface, improve the quality of gloves, and reduce the rejection rate.

医用手套9