KR-102963250-B1 - Resin producing means and method

Abstract

The present invention relates to an apparatus for processing plastic raw materials. Generally, plastic raw materials are used as injection molding materials in the manufacture of various industrial products and household goods, and depending on the application, the main component may be a material such as polycarbonate, polycarbonate ABS resin, polycarbonate glass fiber, nylon, polystyrene rubber, or ABS resin. Resins, such as synthetic and natural resins, soften or melt after heating, and once softened, they tend to flow under external force. At room temperature, they are solid or semi-solid, and sometimes liquid organic polymers. Generally, any polymer that can be used as a raw material for processing plastic products is referred to as a resin and is one of the raw materials for plastics. Plastic can be the final product of the resin. Plastic is a material that can be formed into a flowable material during processing by combining the main component resin or a monomer directly polymerized during processing and additives (t12), such as flow enhancers. That is, plastic can be a pure resin or a mixture of various additives (t12), and the resin acts as a binder. Plastic is formed by mixing and stirring an additive, such as a fluidity enhancer, into a pure resin, which is the main component, i.e., a raw resin (t11). The purpose of the additive (t12) is to improve the physical, mechanical properties and processing properties of the raw resin. As an example of a fluidity enhancer used as an additive, 0.05 to 10 parts by weight of stearic acid and 0.05 to 10 parts by weight of pentaerythritol tetrastearate are added to 100 parts by weight of a copolymerized polyester resin having an intrinsic viscosity of 0.5 to 1.2 dl/g, wherein a dicarboxylic acid containing terephthalic acid and a glycol containing 1 to 100 mol% of 1,4-cyclohexanedimethanol and 0 to 99 mol% of ethylene glycol are copolymerized, and then provided by injection molding, extrusion molding, etc.

Inventors

• 박왕희
• 전금옥

Dates

Publication Date

20260511

Application Date

20231226

Claims (1)

1. A plastic processing device for removing a metal material (t13) from an inflow element (t10) through a metal material removal unit (340) installed at the inlet (311) of a mixing unit (300), The metal material removal unit (340) includes an endless track belt (w0), a main frame (w3), and a magnetic member (342'). A magnetic member (342') is placed between the upper side of the main frame (w3) and the lower side of the endless track belt (w0), and The magnetic member (342') is made to have a smooth surface, and the inner surface of the endless track belt (w0) is also made to have a sliding shape so that the endless track belt (w0) and the magnetic member (342') can slide relative to each other. An opening (y0) is formed on the side of the inlet (311) to install an endless track belt (w0), and A guard (x1) is installed horizontally protruding above the inner opening (y0) of the inlet (311), and By installing a metal material removal brush (x2) on the lower edge of the outer opening (y0) of the inlet (311), A step in which a metallic material (t13a) falls together with an inflow element (t10); A step of preventing an inflow element (t10) from hitting and bouncing off the guard (x1) to escape to the outside through a gap in the opening (y0); A step in which a metallic material (t13b) is attracted by magnetism and comes into contact with and adheres to the endless track belt (w0); A step in which the attached metal material (t13c) exits outside the inlet (311) along the moving rotation of the endless track belt (w0); After exiting to the outside, it comes into contact with a metal material removal brush (x2) and leads to a step in which the metal material (t13d) is detached; and A precision supply unit (350) is further provided at the inlet (311), and The precision supply unit (350) is, A blocking plate (351) that prevents leakage of raw material resin (t11) and additive (t12), and a rotary supply unit (352) that transfers and supplies the raw material resin (t11) and additive (t12) to a mixing unit (300). A plastic processing device characterized by the following.

Description

Plastic processing device {Resin producing means and method} The plastic raw material processing apparatus of the present invention relates to a method for manufacturing by processing plastic resin raw materials. Plastic raw materials are used as plastic injection molding materials in the manufacture of various industrial products and household goods, and depending on the application, the main component may be a material such as polycarbonate, polycarbonate ABS resin, polycarbonate glass fiber, nylon, polystyrene rubber, or ABS resin. Resins, such as synthetic resins and natural resins, tend to flow under external force when they melt or soften after heating. At room temperature, they are solid, semi-solid, or liquid organic polymers. Generally, any polymer that can be used as a raw material for processing plastic products is referred to as a resin and is one of the plastic raw materials. That is, plastic can be the final product of the resin. Plastic is a material that can be formed into a flowable form during processing by combining the main component resin or a monomer directly polymerized during processing and additives (t12), such as a flow enhancer. That is, plastic can be a pure resin or a mixture of various additives (t12), and the resin acts as a binder. The purpose of the added additives (t12) is to improve the physical and mechanical properties of the pure resin, to improve processing properties, or to store the resin. Since plastic raw resins require different physical properties or colors depending on the efficiency of injection molding and processing, as well as the intended use, additives may be mixed along with the main components. Additives include lubricants, stabilizers, plasticizers, colorants, flame retardants, and antistatic agents that are mixed together with the raw resin. In particular, fluidity enhancers are considered important for improving fluidity during molding without compromising the hardness or impact resistance of the plastic. After the additives are mixed according to a preset mixing ratio and weight ratio, they undergo melting, extrusion, and cutting processes to be manufactured into pellets. The pellets can be used as injection materials for mold injection. Variations in the resin raw materials occur during the manufacturing process due to weight ratios (mixing ratios) or poor mixing. An example related to Registered Patent No. 536336 (December 6, 2005), concerning a method for manufacturing a copolymerized polyester resin with improved fluidity in relation to such additives, is illustrated in FIG. 3. As illustrated in FIG. 1, registered patent No. 2197289 (December 24, 2020) regarding a method for manufacturing synthetic resin pellets is exemplified, the method comprises: a preparation step (S10) of preparing one or more types of synthetic resin pellets and additives according to a predetermined weight ratio; a mixing step (S20) of mixing the synthetic resin pellets and additives prepared in the preparation step (S10) in a mixing unit (300); a melting step (S30) of melting the synthetic resin pellets and additives mixed in the mixing step (S20); an extrusion step (S40) of extruding the synthetic resin pellets and additives melted in the melting step (S30) into a plurality of resin wires; a cutting step (S50) of cutting the resin wires extruded in the extrusion step (S40) into a plurality of pellets; and a sorting step (S60) of sorting the plurality of pellets cut in the cutting step (S50) into pellets of a predetermined size standard. The preparation step (S10) includes: a first supply step (S11) of sequentially supplying synthetic resin pellets and additives to a mixing unit (300) according to a preset weight ratio; and an error calculation step (S111) of calculating the weight ratio error of the synthetic resin pellets and additives supplied in the first supply step (S11) using a main weight measuring unit installed in a mixing container (310) of the mixing unit (300). The first supply step (S11) includes: a step of supplying synthetic resin pellets to a pellet storage buffer unit (200) installed on the upper side of the mixing unit (300) with a weight smaller than a preset weight; a step of measuring the weight of the synthetic resin pellets supplied to the pellet storage buffer unit (200) using a first weight measuring unit installed in the pellet storage buffer unit (200); and a step of supplying the synthetic resin pellets supplied to the pellet storage buffer unit (200) to the mixing unit (300). and a step of supplying an additive from an additive supply unit (800) installed on the upper side of the mixing unit (300) according to a pre-set weight ratio in the mixing unit (300); The preparation step (S10) is to additionally supply the synthetic resin pellets to the mixing unit (300) in an amount equal to the insufficient weight of the synthetic resin pellets measured by the main weight measuring unit after the first supply step (S11) and the error calculation ste