Forming device and manufacturing method of non-woven fabric products

Abstract

A forming device and manufacturing method for non-woven fabric products, mainly comprising a forming device for manufacturing non-woven fabric products having a set of upper and lower forming dies, the forming surface of which is arranged with a large number of fine air holes, which lead into an air groove space Finally, an air pump is connected externally through at least one joint located around the periphery. The molding device can choose to send hot air circulation to help hot press molding, or choose one-way suction or two-way suction to quickly cool down, and can be used according to the shape. The size of the object and the amount of molding time can be selectively adjusted and used, which is of great help to the manufacturing and molding process of non-woven products.

Description

[Technical field] [0001] The present invention relates to a molding apparatus and a manufacturing method of a non-woven product, particularly refers to a molding apparatus and a manufacturing method of a non-woven product that can perform hot press-molding. 【Background technique】 [0002] The non-woven product is a multi-fiber material to collect a laminated, reselective use of needle tie, carding, thermal, baking, cold press, etc., so that the fiber material is directly combined into a bulk body product of the expected density and thickness. Many non-woven products can be exposed to many kinds of nonwoven products, such as commercially available non-woven guna cloth, toilet brush body, seat cushion, cushion or sleeping pad, car inside, sound material, internal equipment, paving, etc. product. [0003] There are many kinds of manufacturing methods for non-woven products, one of which is a method for manufacturing the fiber material first, after properly resizing, and then cut int...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned manufacturing method of conventional cold-press forming is an ideal situation. When the thickness of the product to be formed is not very thick and the shape is mostly straight (without many bends), the conventional manufacturing method of cold-press forming is still called enough to use. However, when the formed product has a considerable thickness or a lot of bending, the conventional cold forming manufacturing method often has defects that cannot be formed and the bends are prone to collapse after forming.

The reason why the shape cannot be formed and the bending part is easy to collapse is mainly because when the fiber block is baked through the heating oven, if the fiber block is too thick, or the heating time is insufficient, or the heating temperature If it is not enough, the inside and outside of the fiber block cannot be heated uniformly, especially the inner fibers cannot be thermally bonded and softened, so sometimes the appearance seems to be softened, but in fact, some of the inside are still in a state of insufficient heat softening; Furthermore, after the baked fiber block is sent out of the heating oven, the temperature begins to decrease because it is no longer heated, and then enters the cold press forming mold when the upper and lower mold surfaces are laminated and pressed, due to the upper and lower mold surfaces The surface of the lower mold is usually set to normal temperature or cold water cooling (the purpose is to cool down the product after molding), so the fiber block is cooled more quickly. At this time, if the fiber block is partially softened inside, then Even though it is strongly pressed by the cold forming mold, because the unsoftened fiber inside retains expansion elasticity, it will not be able to be formed properly, or it will be relatively easy to bend due to the stress of expansion elasticity after barely forming. Crash failure occurs

[0006] From the above description, it can be seen that when the conventional cold press forming manufacturing method is actually implemented, as long as the fiber block is not softened by heat inside and outside, it is easy to produce defective products.

For this reason, the manufacturer has to increase the heating time in the heating oven or increase the heating temperature, so that the fiber block is completely softened before being sent out of the heating oven, but in this way, the derived heat energy is consumed in a large amount. In addition to unfavorable environmental protection requirements, there is also a lack of padding manufacturing costs

Images