Double-side film coating device for woven bags

Abstract

The invention discloses a double-side film coating device for woven bags. The double-side film coating device comprises a delivery mechanism, a flattening mechanism and a film coating mechanism, wherein the film coating mechanism comprises a traction unit, a heating and feeding unit and a film coating unit; the traction unit comprises a first rotating roller and a second rotating roller; the firstrotating roller and the second rotating roller are rotatably connected to a frame in parallel; a first driving roller abuts against the outside of the first rotating roller; a second driving roller abuts against the outside of the second rotating roller; the heating and feeding unit comprises a feeding cylinder on a support; a propeller is arranged in the feeding cylinder; a feeding port is formed in the upper end of the feeding cylinder; a first heating device is laid on the outer side of the feeding cylinder; the film coating unit is positioned above the frame and comprises two parallel strip-shaped extrusion boxes; an inner cavity of the feeding cylinder communicates with the two extrusion boxes; a gap is formed between the extrusion boxes; and strip-shaped extrusion openings oppositeto each other are respectively formed in the opposite side walls of the two extrusion boxes. According to the double-side film coating device, the coating on both sides of the woven bags can be completed at a time, and the double-side film coating device has the advantages of being small in size, high in coating efficiency, simple to operate and adjustable in coating width.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment, in particular to a double-sided laminating equipment for woven bags. Background technique [0002] Plastic woven bags are currently widely used in the packaging of fertilizers, chemical products, agricultural products and other items. Its main production process is to use plastic raw materials to extrude film, cut, and unidirectionally stretch into flat yarn, and then weave warp and weft to obtain products, which are generally called woven bags. [0003] When woven bags contain some special items, sometimes they need to have moisture-proof and waterproof functions. This requires a layer of waterproof material to be coated on both sides of the woven bag. The adhesiveness of the coating film material in the molten state is used for coating and plastic compounding. [0004] Most of the laminating equipment in the prior art uses one-sided coating for plastic woven bags, and a separate ...

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Problems solved by technology

[0004] Most of the laminating equipment in the prior art uses one-sided coating for plastic woven bags, and a separate set of laminating equipment is needed to coat the other side of the plastic woven bag for double-sided coating, and the coating width cannot be changed Adjusting the width of the braided belt accordingly, there are problems such as high equipment cost, bulky volume, long coating time, and complicated operation.

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