Environment-friendly hot melt glue capable of bonding biodegradable express bag and preparation method and application of environment-friendly hot melt glue

Abstract

The invention discloses environment-friendly hot melt glue capable of bonding a biodegradable express bag and a preparation method and application of the environment-friendly hot melt glue. The environment-friendly hot melt glue is prepared from 15-35% of naphthenic oil, 10-30% of macromolecular polymer, 10-30% of polyester polymer, 0.5-5% of assistant resin, 20-50% of tackifying resin and 0.2-0.8% of an antioxidant. According to the hot melt glue, for the problem of sealing and bonding of the high-polarity biodegradable express bag, the bonding temperature range of the biodegradable express bag which is made from PBAT / PLA / PHA and other main raw materials reaches consistence with that, about 5-40 DEG C, of ordinary use PE express bags; through the hot melt glue, the problems that through atraditional SBC formula, a biodegradable substrate is difficult to bond, the substrate cannot be broken due to a weak adhesion force, and the suitable bonding temperature range is narrow are solved.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a hot-melt adhesive, in particular to an environment-friendly hot-melt adhesive which can be attached to a biodegradable express bag, and a preparation method and application thereof. Background technique [0002] Hot melt adhesives are widely used in the field of logistics, which plays a role in improving production efficiency and quality assurance in the process of industrialization in these fields. With the rapid popularization of Internet + as a new economic form. However, the degradation cycle of traditional plastic express bags is as long as 300-500 years, causing serious white pollution problems and a huge burden on the global environment. With the rapid development of the express industry, this problem has become more prominent, and biodegradable express bags have emerged as the times require. . The hot melt adhesives currently used in express bags are mainly...

AI Technical Summary

Problems solved by technology

These traditional SBC formula hot melt adhesives have the following problems for highly polar biodegradable courier bags: 1) Adhesion restrictions, the general courier bag bonding temperature is 5-45 ° C, while traditional courier bag hot melt adhesives can Biodegradable courier bags are difficult to bond, or the applicable temperature range is narrow, such as not applicable at 20°C, etc.

2) Use time limit: With the degradation of the biodegradable courier bag itself, the surface of the courier bag changes, resulting in difficulty in bonding

The above problems will lead to the following risks: 1) The express delivery process may experience different temperature environments. Traditional express bag hot melt adhesives have a narrow temperature range for biodegradable express bags and there is a risk of loss of viscosity, causing express items to fall out, etc.

2) The hot melt adhesive of the traditional express bag is difficult to bond the surface of the express bag after spontaneous degradation, resulting in a short service life of the biodegradable express bag and the failure of the express bag

3) The development of logistics enterprises is limited, and there is always no feasible solution for the bonding of biodegradable express bags