Engineering plastic grade PET is resistant to organic solvents
13 Jul 2019
Engineering plastic grade PET is resistant to organic solvents and has good weatherability. Disadvantages are slow crystallization rate, difficult molding process, high molding temperature, long production cycle and poor impact performance. Generally, the processability and physical properties are improved by means of reinforcement, filling, blending, etc., and the glass fiber reinforcing effect is obvious, and the rigidity, heat resistance, chemical resistance, electrical properties and weather resistance of the resin are improved. Adding a nucleating agent and a crystallization accelerator to improve the crystallization rate is slow. Adding flame retardant and anti-flammable dripping agent can improve PET flame retardancy and self-extinguishing. In addition, in order to improve PET performance, PET can be alloyed with PC, elastomer, PBT, PS, ABS, PA. PET (reinforced PET) is mainly processed by injection molding. Other methods include secondary processing methods such as extrusion, bl...
How to judge whether the disposable paper cup is qualified?
05 Jul 2019
Smell Open the outer packaging of the paper cup and smell the smell of the paper cup. The qualified paper cup should have no smell. Unqualified paper cups, such as industrial paraffin, are not food grade, but non-food grade recycled PE, there may be some unstable low molecular components freed, releasing odor, if dressed Hot water, etc., odor may be more obvious, such a situation should be treated with care. Pinch National standards have cup body stiffness and cup bottom strength requirements for paper cups. The paper cup is very soft and slightly flattened. It may be a product that cuts corners and is not easy to use. It is easy to use this paper cup to get hot water and cause accidental injuries such as burns. Photo Fluorescent whitening agents are not allowed in paper cups. Some illegal products are made of recycled paper, and the whiteness is not enough. Add fluorescent whitening agent to use as raw pulp paper. Although there is currently no evidence that the absorption of f...
To select a qualified paper cup
29 Jun 2019
To select a qualified paper cup, first look at the QS production license mark, manufacturer information and production date on the paper cup outer packaging. Also check the applicable range indicated on the package. Regular disposable paper cups are marked with the applicable temperature of the paper cup. Then look at the appearance of the paper cup, the cup cup should not be sunken and wrinkled; the laminating layer and the waxing layer should be even, and the cup should be clean and free of foreign matter. The printed appearance of the paper cup, the simpler the color, the better. The printed pattern should have a clear outline, uniform color, and no visible spots. Paper cups should not be printed within 15 mm of the cup body and 10 mm from the bottom of the cup. Although the ink composition is not necessarily brought into the food because of the protection of the coating, it is safer to select a paper cup with no printing at the bottom of the cup.
PET is a milky white or light yellow
21 Jun 2019
PET is a milky white or light yellow, highly crystalline polymer with a smooth, shiny surface. Excellent physical and mechanical properties in a wide temperature range, long-term use temperature up to 120 ° C, excellent electrical insulation, even at high temperature and high frequency, its electrical performance is still good, but poor corona resistance, anti-corrosion Creep resistance, fatigue resistance, abrasion resistance, and dimensional stability are all good. PET main raw materials are widely used as fibers in ethylene glycol (EG) and terephthalic acid (PTA), and can be classified into two categories: non-engineering plastic grade and engineering plastic grade. PET has excellent properties (heat resistance, chemical resistance, toughness, electrical insulation, safety, etc.) and is inexpensive, so it is widely used as fibers, films, engineering plastics, and polyester bottles. Internationally, the industrial products of polyester thermoplastics have the following six aspects (a...
Customized disposable paper cups
14 Jun 2019
At present, there are more than 2,000 paper food packaging enterprises in the country, and small workshops without filing are estimated to add zero. In the face of the mixed paper cup market, how do people who need to order disposable paper cups choose good quality paper cups? To this end, we have compiled and summarized several aspects that need to be paid attention to when ordering a disposable paper cup for your reference. First, when ordering a disposable paper cup, you must first look for the QS mark. According to the requirements of the AQSIQ, products such as food paper packaging containers must have the QS mark to be sold. Second, when ordering a disposable paper cup, you must understand that the product logo should be complete. The complete product logo of the paper cup includes the product name, the inferior paper cup of the restaurant, the trademark, the implementation of the standard number, the production date and shelf life or the production batch number and the li...
Production process of disposable paper cups
31 May 2019
Paper cup making process Raw paper coating---cutting----like typesetting----printing---membrane cutting---disinfection---forming---disinfection packing---into the warehouse The first is the processing of the width of the paper, depending on the face and the way the printing plate is facing. 1. Either cut or die cut, followed by printing, 2 printing with two offset and stencil printing. 3 The next step is die cutting, which is to cut the printed paper into a fan-shaped piece of paper. It should also be said that some advanced machines can be die-cut by themselves, and 4 is finally formed. The forming needs to have two parts: the cup body and the bottom of the cup. The so-called cup body is the fan-shaped piece cut out from the front, and the bottom of the cup is a paper roll of different specifications. Slitting [cross-cutting] printing, die-cutting, forming, there are 4 kinds of machines in 4 processes, and 4 kinds of machines have an auxiliary resource in operation, that is, co...