Industry News

The performance of plastic mold steel

The performance of plastic mold steel requires plastic products to be molded by injection (injection), compression (compression molding), extrusion, injection, and blow molding. The plastic mold components are divided into two categories. One type is structural parts, including gating system, guide parts, fixed formwork, ejector mechanism parts, support parts, etc. The selected materials are generally medium and low carbon carbon structural steel or alloy structural steel and carbon tool steel. Standard products are available in the parts market; the other type is molded parts, including cavities, cores, inserts, etc., which are the key components of directly molded plastic products. The structure of the molded part is complex, the size of the fine sulfur joint is required to be close and the surface is smooth. Although the strength and toughness required by the material are not as high as the cold work mold and the hot work mold, it must have specific performance requirements.

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Will heating plastic beverage bottles cause cancer?

Plastic beverage bottles are not carcinogenic.

The current PET plastic bottles use food-grade environmentally friendly raw materials, which can be recycled and do not produce carcinogens. The plastic beverage bottles seen in daily life are all blow molded from pet plastic. But ordinary plastic bottles cannot contain high-temperature water. Because the PET bottle is relatively thin, when the bottle body is heated to about 90°, due to the rearrangement of the PET molecular chain and the internal stress, the bottle body will shrink and deform, but the deformed plastic bottle does not release toxic substances.

Moreover, you cannot drink water from hot deformed plastic bottles, so the public need not worry too much about this issue. Rather than believing in all kinds of inexplicable claims that cause cancer, it is better to develop a healthy lifestyle, such as active exercise, staying up late, and eating properly.

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Sealing aluminum foil has many advantages

In our daily life, we will see a layer of sealing aluminum foil on the mouth of the soft tube of hand cream and facial cleanser, and a layer of round sealing aluminum foil outside the cream products in cream jars.

Many people will ask, what’s this for?

In fact, sealing aluminum foil has a wide range of uses and many advantages. Here is a brief list.

1，Aluminum foil is safer and healthier than other materials for making sealing film.

2，The surface of aluminum foil is very clean, and any bacteria or microorganisms cannot grow on the surface of aluminum foil。

3，Aluminum foil is a relatively healthy and hygienic packaging material, and it is not harmful to the human body, and it will notmake the product smell bad.

4，The aluminum foil sealing film has the functions of anti-leakage, fresh-keeping, anti-deterioration, anti-counterfeiting, anti-theft, and anti-moisture, which can extend the storage period of items.

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Can plastic bottles contain sterilizing alcohol?

Recently, the COVID-19 epidemic has raged, and customers in many countries have purchased plastic bottles for disinfecting alcohol. So, can plastic bottles contain alcohol-free or alcohol-containing cosmetics? Please take a look at our analysis.

The main components of plastic bottles are made by mixing synthetic resins and additives in a specific ratio. Common ones are PET, PP, PVC, PC, PE, PS, etc. Although most of them will not chemically react with alcohol, they are not excluded. Some plastics or additives in them will be corroded by alcohol. The wine used for drinking must be careful not to use plastic bottles casually. At present, only food-grade plastics, such as PET, can be filled with alcohol.

PET, the English name is Polythylene terephthalate, referred to as PET or PETP (hereinafter referred to as PET), commonly known as polyester resin. It is a polycondensate of terephthalic acid and ethylene glycol, collectively referred to as thermoplastic polyester or saturated polyester together with PBT. PET is a milky white or light yellow highly crystalline polymer with a smooth and shiny surface. Creep resistance, fatigue resistance, good friction resistance and dimensional stability, low abrasion and high hardness, have the greatest toughness among thermoplastics; good electrical insulation performance, less affected by temperature, but poor corona resistance. Non-toxic, weather resistance, good chemical resistance stability, low water absorption, resistance to weak acids and organic solvents.

The 75% alcohol in plastic packaging bottles must be medical food-grade plastic packaging. It needs to undergo strict testing. The country has a strict quality control center, which will not pollute the alcohol or cause dissolution. , Customers can rest assured to use our pet plastic bottles, which will not have any adverse effects on alcohol-based cosmetics/disinfectants.

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During COVID-19 epidemic, many customers prefer to use foam bottled hand sanitizer.

The characteristic of foam hand sanitizer is that it is already foamed when squeezed out, which is very time-saving. In addition, the composition is not comparable to ordinary hand sanitizers. A big difference. Careful people will find that ordinary hand sanitizers are particularly easy to solidify in cold weather. Under normal weather, squeeze it out and need a lot of water to rinse. The foam is smooth and delicate, and has stronger decontamination ability.

Compared with soap, there is no cross-infection. Foaming hand sanitizer, through the pump head with magic power, directly out of rich foam, it is more convenient to wash hands, flushing is also very fast, and the water consumption is half of ordinary hand sanitizer. Our factory produces foam bottles of various capacities, welcome new and old customers to buy.

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BPA is bisphenol A, and it is one of the most widely used industrial compounds in the world. When manufacturing plastic products, adding bisphenol A can make it have the characteristics of colorless and transparent, durable, lightweight and outstanding impact resistance. Bisphenol A is everywhere, from mineral water bottles, medical equipment to food packaging. Every year, 27 million tons of plastics containing bisphenol A are produced worldwide. But BPA can also cause endocrine disorders, threatening the health of fetuses and children. Although under certain conditions, the structure of the plastic bottle is stable and will not affect the human body. However, as the transparency increases, the amount of bisphenol A used will increase, which is only harmful to the human body. Therefore, our factory’s PET transparent plastic bottles are absolutely free of BPA ingredients, and our factory’s transparent plastic bottles are in line with national food quality and safety requirements, and customers can purchase with peace of mind.

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For nozzles and pump heads, everyone should know that it is necessary to place a spring inside the product center. The external pump, that is, the spring in the center of the nozzle/pump head, is visible externally, generally placed above the pump core. The assembly is directly connected to the spray head/pump head cap. The advantage of the external pump is that it is not in direct contact with the liquid in the bottle, which is environmentally friendly and hygienic, and can prevent 100% of the rust of individual springs from affecting the quality of the product in the bottle. Of course, this problem is rare, because most of the springs are Is processed. In addition, the power of the external pump is larger than that of the internal pump, so the general pump head uses more external pumps, which is suitable for more viscous liquids such as emulsion stock solution.

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Foam Pump Hand Sanitizer Save More Money

    Tell you why foam pump hand sanitizer save more money for you.

1. Convenient to use: the pump head pumps out foamy products, eliminating the process of rubbing and foaming with water.
2. Dosage saving: each use is 1/2 of the amount of ordinary hand sanitizer.
3. Double the effect: Direct foamingeffect, not easy to fall, so that the effective ingredients in the foam are fully utilized, greatly improving the cleaning, sterilizing and moisturizing effects.

The principle of foaming hand sanitizer directly pressing out foam:

There is a special device at the mouth of the bottle to fully mix the air and the blowing agent. The middle school must have done such an experiment. The drooping paper strip floated to the place where the gas flows, because the fluid has a decompression effect, the middle of the foam gun is a normal gun head, and a sleeve with many holes on the side is added outside, and the foam agent is sprayed from the middle of the sleeve Outdated, because the air pressure is reduced, a lot of air is drawn in from the side and mixed with it to produce foam.

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Three keypoints you need to know before silk screen printing

1. Clean the printing place of silk screen processing. Try to ensure that there is no dust in the air in the printing workshop and plate making workshop, otherwise it will affect the printing quality. For workshops that require high printing accuracy, air purification equipment should be installed if necessary to keep the printing and platemaking workshops clean.
2. The temperature and humidity requirements, the temperature and humidity of the four seasons vary greatly, and the impact on printing accuracy is relatively large, especially the multi-color overprint, the effect is more obvious, so the indoor humidity and temperature must be relatively stable, and according to the season Properly adjust the temperature and humidity in the room to ensure printing dimensional accuracy.
3. Understand the nature of substrates. At present, with the development of science and technology, there are many types of substrates and different shapes. Before printing, select appropriate inks, solvents, and scrapers according to different requirements.

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What are the precautions when making hot stamping signs 

The signs and labels must be centered around the graphics and texts. The graphics and text should be clear, not deformed, and maintain a good image. The difference is the production of hot stamping logos and stamping other products that are only decorative. Pay attention when stamping. The following points:

1. First clean the surface of the identification label to be stamped. According to the material of the identification label, select the applicable stamping foil, and then determine the stamping temperature according to the type of stamping foil.
2. First try a few samples, control the depth of the stamping with high-speed stamping pressure, and then locate and lock the controlled depth.
3. After reaching a certain depth, it is necessary to grasp the stamping time and raise the stamping head quickly. It must be successful once and cannot be repeated. Repeating will make the writing on the signboard blurred, the strokes produce ghosting, and the graphics are not bright.
4. Embossed embossed identification signs should pay attention to controlling the pressure, especially the softer plastic. Excessive pressure will cause the handwriting to collapse and deform the handwriting. When stamping, the edges and corners of the graphic will not be damaged.

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