Two invention patents of Henan Yinfeng Plastic Co., Ltd. were authorized by the State Intellectual Property Office

2016-10-130
Recently, two invention patents applied by Henan Yinfeng Plastic Co., Ltd. have been authorized by the State Intellectual Property Office for invention patents, realizing a new breakthrough in invention patent work. The names of the two authorized invention patents are "a multi-layer composite functional fresh-keeping film" (patent number: 201310420320.8) and "three-layer co-extruded EVA anti-fogging environmental protection multi-functional greenhouse film" (patent number: 201310219304.2). These two invention patents are derived from the scientific and technological achievements independently developed by Henan Yinfeng Plastic Co., Ltd.

The invention of "a multi-layer composite functional fresh-keeping film" mainly relates to a multi-layer composite functional fresh-keeping film and its preparation process, in particular to the preparation of a fresh-keeping film using polyethylene, ethylene / vinyl alcohol copolymer and polyamide as raw materials. Food and medical packaging. The invention is characterized by a raw material formula. In the past, the multi-layer cling film was either compounded or coated, and it was not improved from the formulation. It is difficult to meet the needs of multi-function cling film for quality preservation, preservation, and flavor preservation, and it is not convenient for use in the field of food packaging and pharmaceutical packaging. The invention adopts polyethylene, ethylene / vinyl alcohol copolymer and polyamide as the main raw materials. By improving the raw material formula, according to the five-layer structure of PE / EVOH / PA / EVOH / PE, one layer is the inner layer, two, three and four The middle layer, the fifth layer is the outer layer. Appropriate amount of each layer is blended with corresponding additives and co-extruded blow-molded to form a multi-layer composite functional fresh-keeping film.

The multi-layer composite functional fresh-keeping film produced by the invention of "a multi-layer composite functional fresh-keeping film" can block oxygen, water vapor and oil, and thus has various functions such as quality preservation, fresh-keeping and flavor preservation, and is transparent and non-toxic , High strength, anti-aging, green and environmental protection, can be well used in the preservation of food and medicine, and extend the shelf life.

The invention of "three-layer co-extruded EVA anti-fogging environmental protection multifunctional greenhouse film" mainly relates to a preparation process of agricultural greenhouse film, in particular to a preparation process of disposable melt polyethylene agricultural greenhouse film, which belongs to the field of agrochemical. Compared with the commonly used ordinary polyvinyl chloride film, PVC non-drop film, ordinary polyethylene film, polyethylene non-drop film, polyethylene multi-functional composite film and EVA multi-functional composite film, etc., three-layer co-extruded EVA anti-fogging The environmental protection multi-functional greenhouse film has excellent anti-aging properties, and its service life is expected to reach more than 3 years.

The invention of "three-layer co-extruded EVA anti-fogging environmental protection multifunctional greenhouse film" aims to improve the existing technology and provide a new process for preparing three-layer co-extruded EVA long-life anti-fogging environmental protection multifunctional greenhouse film. The preparation process first mixes the powdered resin and the functional additives, makes the masterbatch by twin-screw extrusion, cooling, pelletizing, and testing, and then mixes with the resin, and then undergoes three-layer coextrusion, blow molding, and corona treatment , Folded and made into three-layer co-extruded EVA longevity anti-fog and drop environmental protection multi-functional greenhouse film. The production process is unique, reasonable, low investment, low cost, easy to operate, and there is no "three wastes" in the production process. The innovation of the invention is that additives are added at one time during stirring and drying, and play different roles in the feeding section, melting section and homogenizing section respectively; the use of cross-linking agents solves the problems of exhaust gas and product bubbles during melting; use Coupling agents, nucleating agents, and opening agents solve some of the problems of unstable extrusion, uneven thickness in the longitudinal direction, and melt homogenization.

After inspection and testing by authoritative departments, the quality and technical indicators of the "three-layer co-extruded EVA anti-fogging environmental protection multi-functional greenhouse film" have reached or exceeded the national standard, and a few of them exceeded the national standard by more than 2 times. Moreover, the process is reduced, energy is saved, and costs are reduced, which provides a brand-new technical approach for reducing pollution, protecting the environment, and developing a circular economy.

The authorization of these two invention patents shows that Henan Yinfeng Plastic Co., Ltd.'s independent innovation ability has been further improved, and also reflects Yinfeng's independent innovation ability in plastic film processing. Not only does it increase the company's intangible asset inventory, but it also improves the company's core competitiveness and brand influence. At present, Henan Yinfeng Plastic Co., Ltd. has 7 national authorized patents.