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Low temperature low viscosity formula type polyurethane hot melt adhesive and production process thereof

A polyurethane hot melt adhesive, low viscosity technology, applied in the direction of polymer adhesive additives, non-polymer adhesive additives, adhesive additives, etc., to achieve the effect of reducing raw material costs, less damage, and faster curing time

Active Publication Date: 2014-09-10
杭州仁和热熔胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a low-temperature and low-viscosity formula type polyurethane hot melt adhesive and its production process by improving the technical deficiencies of the existing hot-melt adhesive and its production process.

Method used

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  • Low temperature low viscosity formula type polyurethane hot melt adhesive and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 42Kg polyester polyurethane, 15Kg high melting point polyolefin, 10Kg polyester elastomer, 30Kg natural resin, 0.4Kg PET slip agent, 0.4Kg polyolefin slip agent, 1Kg antioxidant, 0.6Kg hindered amine light stabilizer, Put 0.5Kg of ultraviolet absorber and 0.1Kg of coupling agent into the mixer, mix for 32 minutes, the mixing temperature is 25°C, mix evenly, then melt and extrude in the extruder at 70°C, cool and cut to finally obtain low temperature Viscosity formulated polyurethane hot melt adhesive finished product.

Embodiment 2

[0032] 40Kg polyester polyurethane, 35Kg high melting point polyolefin, 8Kg polyester elastomer, 15Kg natural resin, 0.75Kg PET slip agent, 0.2Kg polyolefin slip agent, 0.4Kg antioxidant, 0.3Kg hindered amine light stabilizer , 0.3Kg ultraviolet absorber, 0.05Kg coupling agent into the mixer, mixed for 35 minutes, the mixing temperature is 35 ° C, mixed evenly, and then melted and extruded in the extruder at 60 ° C, cooled and cut to finally obtain low temperature Low-viscosity formulated polyurethane hot melt adhesive finished product.

Embodiment 3

[0034] 50Kg polyester polyurethane, 17.5Kg high melting point polyolefin, 14Kg polyester elastomer, 16Kg natural resin, 0.5Kg PET slip agent, 0.5Kg polyolefin slip agent, 0.5Kg antioxidant, 0.4Kg hindered amine light stabilizer Adding agent, 0.4Kg ultraviolet absorber and 0.2Kg coupling agent are put into the mixer, mixed for 30 minutes, the mixing temperature is 30°C, mixed evenly, then melted and extruded in the extruder at 90°C, cooled and cut to finally obtain Low-temperature and low-viscosity formulated polyurethane hot melt adhesive products.

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Abstract

According to the present invention, a polyester type polyurethane, a high melt index polyolefin, a polyester elastomer, a nature tackifier, a slipping agent and other additives are mixed, and then are subjected to extrusion, cooling and cutting to obtain a low temperature low viscosity formula type polyurethane hot melt adhesive; the low temperature low viscosity formula type polyurethane hot melt adhesive provides good adhesion strengths for various substrates, and particularly provides special performances for substrates with oil and a plasticizer; the product has characteristics of low melt viscosity and fast curing, is applicable for ordinary hot melt adhesive tanks, and meets use requirements of majority of hot melt adhesive tank users; a product softening temperature is low so as to achieve low temperature pressing compounding of the substrate, such that damage on leather products, plastics and other substrates is low; and a production cost of the low temperature low viscosity formula type polyurethane hot melt adhesive is lower than a production cost of the polyester type polyurethane hot melt adhesive, and is close to a production cost of the ordinary EVA hot melt adhesive, and an adhesion effect of the low temperature low viscosity formula type polyurethane hot melt adhesive is superior to an adhesion effect of the ordinary EVA hot melt adhesive.

Description

technical field [0001] The invention relates to a low-temperature and low-viscosity formula polyurethane hot-melt adhesive and a production process thereof. Background technique [0002] Hot melt adhesives currently used in the leather goods manufacturing industry mainly include EVA, PA, and PU hot melt adhesives. With the improvement of people's living standards and the change of aesthetic concepts, more and more ingredients such as various oils and plasticizers are added to materials such as leather shoes and bags. Ordinary EVA hot melt adhesives are not resistant to oils and plasticizers, and their bonding effect in leather shoes, bags and other products is greatly reduced. PA and PU hot melt adhesives are better resistant to oils and plasticizers, but generally have high viscosity and long curing time, which require high hot melt adhesive coating equipment and processes, and must be coated with extruders or powdered. , and the extruder coating or powdering process ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J11/08C09J11/06
Inventor 赵庆芳韩岳红蔡玉丽陈佳磊
Owner 杭州仁和热熔胶有限公司