Adhesive application device of polytetrafluoroethylene microporous membrane

Abstract

The invention discloses an adhesive application device of a polytetrafluoroethylene microporous membrane, which comprises a frame, wherein the frame is provided with a reel bracket, an adhesive feed roller, an adhesive chamber, a silica gel top roller, a transition roller and a transition wrap angle roller, wherein an adhesive feed gap is arranged between the lower end of the bottom surface of the adhesive chamber and the upper adhesive roller; and the silica gel top roller abuts against the roller surface of the adhesive feed roller. According to the adhesive application device of the polytetrafluoroethylene microporous membrane, the adhesive in the adhesive chamber is firstly uniformly applied to the roller surface of the adhesive feed roller through the adhesive feed gap; when the adhesive feed roller and the silica gel top roller rotate relatively and the membrane bypasses the adhesive feed roller, the adhesive on the roller surface of the adhesive feed roller is uniformly applied onto the surface of the membrane; since the adhesive application process of the membrane is an adhesive transfer application process, the surface of the membrane is only subjected to the pressure perpendicular to the membrane in the whole process, and thus, the membrane can not be damaged by scraping; and meanwhile, the adhesive coating on the surface of the membrane is more uniform, and can not have the phenomenon of partial missed application regions.

Description

technical field [0001] The invention relates to a production equipment device for functional fabrics, in particular to an adhesive coating device for polytetrafluoroethylene microporous films in high-tech functional fabrics with waterproof, breathable, windproof and warm-keeping functions. Background technique [0002] With the improvement of people's living standards, microporous polytetrafluoroethylene microporous film-coated fabrics have been widely used in various casual wear, high-grade shoe thermal materials, protective clothing, and fire-fighting and military clothing. The microporous polytetrafluoroethylene film processed by biaxial stretching technology was first invented and introduced to the market by W.L.Gore Company of the United States. The film has a microporous structure formed by connecting microfibers and nodes. Parameters, the micropore diameter is controllable in the range of 0.1~5.0μm, and the porosity is as high as 80% or more, so as to achieve waterpro...

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Problems solved by technology

[0003] The adhesive coating device of the existing microporous polytetrafluoroethylene film is usually a common scraper coating machine, and the microporous polytetrafluoroethylene After the film and the fabric are combined, the film is coated with adhesive. Since the scraper coating machine uses the upper and lower scraper blades to scrape off the adhesive poured on the film, only a certain thickness of adhesive coating remains on the film. Drying on the PTFE microporous film in this way, on the one hand, the thickness of the adhesive coated on the film is uneven, which is easy to cause missing coating in some areas; on the other hand, due to the thickness of the film Smaller, and the strength of the film is small, the scraper blade is easy to scratch the film, and the PTFE microporous film is scrapped, and the fabric compounded on it is also scrapped, and the loss is large

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