KR20020089272A - Non toxic, Non Dioxin Materials. - Google Patents

Abstract

PURPOSE: Provided are a synthetic resin capable of water-soluble adhesion and substituted for PVC and domestic styrene, which is friendly to environment, and a process for producing the synthetic resin. CONSTITUTION: The synthetic resin is produced by the process comprising the steps of: mixing a base synthetic resin, 0.5% of a filler, 0.6-1.2% of a lubricant, 0.2-0.5% of a stabilizer, and 0.5-0.8% of non-toxic additives in a kneader with 150-200deg.C, wherein the base synthetic resin is 60-70% of ethylene terpolymer and 30-40% of styrene ethylene copolymer in case of color products or the base synthetic resin is 50-60% of ethylene terpolymer, 10-20% of styrene ethylene copolymer, and 20-40% of polystyrene copolymer in case of transparent products; mixing again in a mixing roll with 150-200deg.C; and extruding at a cylinder temperature of 120-150deg.C.

Description

Water soluble adhesive, PVC and domestic alternative synthetic resin and manufacturing method {Non toxic, Non Dioxin Materials.}

Due to the serious environmental pollution caused by dioxin, heavy metals, and styrene dimer, which are harmful environmental substances generated during the combustion of the existing thermoplastic material PVC, it is urgently required to develop your own material, which is environmentally friendly and excellent in molding process of the product. Wants to make new plastics that can be satisfied

The present invention is a development and manufacturing method of thermoplastic synthetic resin that can reduce the emission of carbon dioxide without any emission of dioxins and heavy metal components emitted from the combustion of existing PVC having the above problems and the dimers generated from burning domestic styrene at all.

Raw materials made after shearing and cooling through mixing with synthetic extruder and various non-toxic additives that are harmless to the environment, and then kneading through an extruder

In order to achieve the object of the present invention, 60% -70% of the ethylene copolymer, the basic synthetic resin, 30% -40% of the styrene ethylene copolymer, 50% -60% of the ethylene copolymer, the transparent product, 10% -20% styrene-ethylene copolymer, 20% -40% polystyrene copolymer, 0.5% filler, 0.6% -1.2% lubricant, 0.2% -0.5% stabilizer, and 0.5% -0.8% non-toxic additives Mix for 7-10 minutes at 150 ℃ -200 ℃, then knead again at 150 ℃ -200 ℃ for 24 "x 80" mixing rolls for 5-10 minutes and place in extruder through hopper. If you want to express the soft and hard to put into the resin mixing ratio by adjusting the ratio of SHORE A 30-SHORE A 95 is possible, the screw length of the cylinder temperature 120 ℃ -150 ℃ screw length 25: 1 or 27: 1 ratio This process is processed to receive pressure on the middle part of the screw (FLIGHT DEPTH) and extruded for 5 minutes to 10 minutes.

At this time, when the temperature inside the cylinder of the extruder is about 250 ° C., the carbonization is vertical and transparency is reduced. The thermoplastic synthetic resin of the present invention, which is completed through the manufacturing method as described above, is conventionally impossible in ethylene products. However, when a certain amount of antipolar group is given, a high strength adhesive effect can be obtained and water-soluble adhesive is possible.

Example 1

Transparent sheet manufactured by a calendar machine using the material obtained in the manufacturing process of the present invention (see Table 1)

Example 2

Heavy metal component test, PVC FREE test report of the materials obtained in the manufacturing process of the present invention (see Table 2)

The water-soluble adhesive PVC and domestic styrene substitute synthetic resin of the present invention do not generate dimer, which is an environmentally harmful substance discharged during the conventional combustion of PVC and domestic styrene combustion, also do not have heavy metal components and significantly reduce carbon dioxide emissions. In contrast, the existing ethylene products have no adhesive properties, but by providing a certain amount of polar groups, high strength adhesiveness can be obtained and water-soluble adhesives are possible.

Therefore, there is no need for a special pretreatment agent used in the past, and in general, it is possible to obtain an adhesive effect only by pretreatment with MODIFY, which is advantageous in terms of cost of the additive drug.

In addition, as product molding using extrusion, injection, and blow molding is satisfied, its marketability is convinced of great demand in domestic and overseas markets.

Claims (1)

Invention Material and Manufacturing Method Transparent product: 50% -60% of ethylene polypolymer Styrene ethylene copolymer 10% -20% Polystyrene Copolymer 20% -40% Colored products: Ethylene polypolymer 60% -70% Styrene ethylene copolymer 30% -40% Filler 0.5% About 0.6% -1.2% of lubricant Stabilizer 0.2% -0.5% Other additives 0.5% -0.8% Colored products with pigment