Molding technology of integrated forming of two layers of polyurethane shoe soles with different hardness
A technology of polyurethane and polyurethane, which is applied to footwear, other household appliances, household appliances, etc., can solve the problems of service life integration and limited firmness, and achieve the effect of not being easily deformed and comfortable to wear
Inactive Publication Date: 2018-12-25
佛山市南海区正旭鞋业有限公司
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AI Technical Summary
Problems solved by technology
The lower sole and the upper sole of different hardness are pasted with glue, the firmness is limited, the service life is limited by the glue, and the lower sole and the upper sole cannot be truly integrated
Method used
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Experimental program
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Embodiment Construction
[0010] In the following, the present invention will be further described in conjunction with specific embodiments, so as to understand more clearly the technical idea claimed in the present invention.
[0011] The present invention integrally forms the forming process of two layers of polyurethane soles with different hardness, comprising the following steps:
[0012] a, the bottom high-hardness shoe sole molding, in the polyester polyol of 96% weight part, add the catalyst of 1% weight part, the hardening agent of 3% weight part and fully stir and obtain polyester polyol compound, then poly The mixture of urethane and polyester polyol is injected into the mold preheated to 50°C in the ratio of 100:110, the mold is locked, and the polyurethane and polyester polyol are mixed for foaming reaction for 8 minutes. The lower high-hardness sole with a hardness of 68 degrees can be formed;
[0013] B, upper strata low-hardness sole moulding, the bottom stratum high-hardness sole that...
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Abstract
The invention discloses a molding technology of integrated forming of two layers of polyurethane soles with different hardness. A lower layer high hardness shoe sole is not removed from a mold after forming, and then an upper layer low hardness shoe sole is directly formed on the lower layer high hardness shoe sole. The upper layer low hardness shoe sole and the lower layer high hardness shoe soleare directly bonded into one during a foaming process, and integrated forming of the two layers of the polyurethane shoe soles with different hardness is realized. The hardness of the lower layer is68 degrees, enough bearing force is achieved, and deformation is not prone to being generated. The hardness of the upper layer is 30 degrees, the characteristics of softness and comfort are achieved,and the upper layer is comfortable to wear. The characteristics of integrated forming of the polyurethane shoe soles with different hardness of the upper and lower layers by directly using polyurethane self-foaming reaction to enable the upper layer low hardness shoe sole and the lower layer high hardness shoe sole to bebonded together without the need to use glue for pasting is achieved.
Description
technical field [0001] The invention belongs to the technical field of polyurethane shoe sole production and molding, and in particular relates to a molding process capable of integrally molding polyurethane shoe soles with upper and lower layers of different hardness. Background technique [0002] The existing traditional polyurethane sole usually adopts one-time molding, and the molded polyurethane sole has the same hardness as a whole. When it is necessary to produce polyurethane soles with high hardness of the lower layer and low hardness of the upper layer, that is, the lower layer of the sole has sufficient supporting force, and the upper layer of the sole is soft and comfortable. At present, it is produced by forming the lower sole and the upper sole respectively, and then bonding the lower sole and the upper sole with different hardness together by glue. The lower sole and the upper sole of different hardness are pasted with glue, the firmness is limited, the service...
Claims
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IPC IPC(8): B29D35/14C08L67/00C08L75/04
CPCB29D35/142C08L67/00C08L75/04
Inventor 方毅
Owner 佛山市南海区正旭鞋业有限公司