Method for water soluble liquid state rubber foam forming stereo rubber product

Abstract

The present invention relates to a manufacturing method for stereo rubber products by foaming and forming water solubility liquid rubber. The crude liquid rubber serves as the raw material, the liquid rubber after foaming is put into the germule moulds with different thickness, and then the germule mould is roasted, and then demolding is executed when the liquid rubber to be foamed is dried to be adapted to be demolded but not to be completely shaped; furthermore, dried germules with different thickness can be obtained, which are put into the forming mould to be heated and presses to form one piece by hot pressing; and then the stereo rubber product is obtained after cooling. In the present invention, the stereo rubber product with the needed thickness and hardness at appointed part can be obtained; besides, in the presence of changing the arranging differences of the air pore density of the raw material, the structure of the rubber product of the present invention can realize excellent hardness and tension effect and keep gas permeation property by pushing and reducing the gas bubble gap at two sides and keeping the opencelled structure of the intermediate layer. The present invention has a simple technology and a high operability.

Description

technical field [0001] The present invention relates to the technical field of rubber forming technology, in particular to a method for forming three-dimensional rubber products by foaming water-soluble liquid rubber, such as forming rubber insoles and protective gear. Background technique [0002] With the continuous improvement of people's living standards, people put forward higher requirements for the comfort of three-dimensional rubber products such as insoles and protective gear. Therefore, the industry's selection of materials and manufacturing processes are particularly critical, and it has become a problem that the industry must solve at present. . [0003] Please refer to the manufacturing method disclosed in Chinese patent application 93121084.1 for a one-time molding of sports insoles, in which semi-oily latex is used as the pad body material to heat and solidify for direct molding. Small pores have poor air permeability and high deformation rate. Although it is...

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Problems solved by technology

[0003] Please refer to the manufacturing method disclosed in Chinese patent application 93121084.1 for a one-time molding of sports insoles, in which semi-oily latex is used as the pad body material to heat and solidify for direct molding. Small pores have poor air permeability and high deformation rate. Although it is easy to form during processing, it also causes the disadvantage of easy deformation of insole products.

[0004] Another example is the disclosed rubber foam outsole, rubber foam plate, sheet and cloth-added molding manufacturing method of Chinese patent application 200610033445.5, which is made of rubber footwear through foaming of solid rubber that is mixed and rolled. Although it has better tensile force and wear resistance, it has almost no air permeability. For insoles, it has poor comfort; especially when it is made into a finished product with low hardness, its deformation rate is much higher than that of liquid rubber, so it does not have The materials needed for the development of insole industry in the future

[0005] Nowadays, foamed rubber products have been widely used in all walks of life. As we all know, water-soluble liquid rubber contains natural rubber liquid (NATURE LATEX) or natural rubber liquid and styrene-butadiene rubber liquid (STYRENCE BUTADIENE RUBBER LATEX), but for this water-soluble Due to its physical properties, liquid rubber has many limitations. For example, the finished product cannot be thermoplastically formed, it is difficult to have a three-dimensional molded product, the surface is not wear-resistant, and the tensile force is insufficient. Low efficiency, good elasticity, environmental protection, etc.), also loses competitiveness with the pressure of market economy that technology cannot break through

Originally, this type of water-soluble liquid rubber product has an open cell structure, so it has excellent elastic performance, and the hardness can be extremely low. It is also not wear-resistant and has insufficient tensile force due to the open cell structure. In particular, it is free from external pressure, so it is difficult to make a three-dimensional shape, and it cannot be processed like semi-oily liquid rubber when it is almost or completely dry, or it is made into a three-dimensional shape but the surface still has imperfections. The phenomenon of wear resistance or insufficient tension occurs

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