HONGWEI-Vacuum Forming

Since 2007, HONGWEI has established itself as the leader in OEM vacuum forming and thermoforming plastic services. We are committed to providing all-in-one solutions for your plastic product needs.

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Thermoforming Process

Thermoforming is plastic process technology. The main principle is to heat and soften the flat plastic sheet. It is vacuum-adsorbed on the surface of the mold and cooled to form. It is widely used in plastic packaging, lighting, advertising, decoration and other industries.

Common problems in the thermoforming plastic process and solutions

*Poor adsorption

– Reason: a. The coating is too thin and unevenly coated. b. The printed substrate is rough and the absorption is too strong. c. The plastic oil is too thin and the plasticizing power is insufficient. d. The temperature is insufficient when heating the seal. e. Effect of crystallization of the ink layer. f. The plastic oil has been stored for too long and has deteriorated.

-Solution: a. Adjust the roller and the amount of coating. b. Replace the printed substrate or apply the primer first. c. Replace the plastic oil or increase the amount of coating. d. Increase the temperature at the time of solder sealing. e. Wipe the surface of the print before absorbing the plastic oil or add 5% lactic acid to dilute. f. Replace the plastic oil.

*The grinding surface is not shiny

-Reason: a. The blister oil is too thin and the coating is too thin. b. Too much dilution, too many solvents to participate in the reaction. c. The viscosity is too high and the flow is poor. d. The drying temperature is low and the thermoforming quality is poor.

-Solution: a. Increase the amount of coating. b. Try not to add dilution, use the stock solution. c. Reduce the amount of coating. d. Appropriately increase the drying temperature.

To visit more thermoforming plastics products, please kindly check our works

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Thick Gauge Thermoforming Plastic Applications

Thick gauge thermoforming means that the raw material used is more than 2mm thick and cannot be molded on a fully automatic machine. It must be processed by a semi-automatic plastic forming machine for thick plates.

Thick gauge thermoforming material Thick blister materials mainly include ABS, Acrylic, PETG, PVC, PC, PP, PE, PS, etc., and various modified plastics, light board, leather board, transparent board.

Thick gauge thermoforming use Thick plate blister can be used for product design and manufacture of rear projection TV back cover, display, medical equipment, textile machinery, automobile accessories, precision electronics, turnover tray, cosmetic display frame.

Heavy gauge thermoforming products

Thick sheet plastic molding products mainly include refrigerator liner plastic, PS plastic, ABS plastic, outer shell plastic, plastic shell, thick plate plastic, thick-walled plastic, acrylic plastic, PMMA plastic, etc. Sheet plastic products are widely used in medical equipment, food equipment, instrument housings, electrical enclosures, automotive body jackets, pet trays, advertising light boxes, lighting, refrigerator industry, air conditioning industry, and home appliance accessories.

The heavy gauge vacuum forming product can replace the injection molding process, save the cost of expensive injection molds, and can replace the traditional hand-made, with advanced production technology, fast speed, and reliable quality.

Application of vacuum thermoforming process in medical shell industry

With the maturity and improvement of the technology of thick plate blistering, the application range is wider, especially in the medical housing industry. The combination of thick plate blistering and hand bonding process greatly reduces the production cost of the medical casing, simplifies the production process, and improves production efficiency.

To visit more vacuum thermoforming products, please kindly check our works .

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What is the difference between thermoforming, blow molding and injection molding?

Thermoforming

A plastic processing technology, the main principle is to heat and soften the flat plastic hard sheet, vacuum adsorption on the surface of the mold, cooling and forming, widely used in plastic packaging, lighting, advertising, decoration, and other industries.

Injection molding

Injection molding, ie injection molding of thermoplastics, involves melting the plastic material and then injecting it into the membrane cavity. Once the molten plastic enters the mold, it is shaped into shape by the cold cavity. The resulting shape is often the final product and no further processing is required prior to installation or use as a final product. Many details, such as bosses, ribs, threads, can be formed in one injection molding operation.

Blow molding

Also known as hollow blow molding, a rapidly evolving plastic processing method. The tubular plastic parison obtained by extrusion or injection molding of thermoplastic resin is heated (or heated to a softened state), placed in a split mold, and compressed air is introduced into the parison immediately after closing the mold to blow the plastic parison It is inflated and adhered to the inner wall of the mold and is cooled and released to obtain various hollow products. The manufacturing process of the blown film is very similar in principle to the blow molding of hollow products, but it does not use a mold. From the perspective of classification of plastic processing technology, the molding process of blown film is usually included in the extrusion. The blow molding process began to produce low-density polyethylene vials during the Second World War. In the late 1950s, with the birth of high-density polyethylene and the development of blow molding machines, blow molding technology was widely used. Hollow containers can be up to several thousand liters in volume, and some have been computer controlled. Suitable plastics for blow molding include polyethylene, polyvinyl chloride, polypropylene, polyester, etc., and the resulting hollow containers are widely used as industrial packaging containers.

For more details please kindly contact us.

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PET sheet and its products

PET sheet is a new type of material developed in recent years. With its excellent toughness, high strength, high transparency, and recyclable recycling, it can burn and not produce harmful environmentally friendly gas. It is an environmentally friendly material and gradually bans PVC. But the price is high so it is suitable for high-grade plastic products. The plastic blister in Europe and the United States generally requires PET materials, but its high thermal melting point brings great difficulties to high-frequency packaging. In order to solve this problem, people are compounded on PET surface. The layer of PVC film named PETG, but the price is higher. Mainly used in electronics, food, toys, color box window, collar, footwear packaging.

Main feature: 1. It has excellent transparency and smoothness, and the display effect is good. 2, The surface decoration performance is excellent, can be printed without surface treatment, easy to press the pattern, easy metal treatment (vacuum metal plating) 3. It has good mechanical strength. 4. Good barrier performance against oxygen and water vapor. 5, good chemical resistance, can withstand the erosion of a variety of chemicals. 6, non-toxic, reliable hygienic performance, can be used for food, medicine, and medical equipment packaging, and can be used to disinfect the packaged items with Y-ray. 7. It has good adaptability to environmental protection and can be recycled economically and conveniently; when it is burned, it does not produce harmful substances. It is considered to be an ideal packaging material for compliance with (ROSH) environmental protection requirements. 8. Good thermoforming performance, comparable to ordinary PVC sheets, can be obtained by vacuum forming to obtain PET thermoformed products with excellent performance.

Main purpose: Electronics, food, toys, color box window, etc.

To visit more PET vacuum forming products, please kindly check our works

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Thick Gauge Thermoforming Plastic Applications

Thick gauge thermoforming means that the raw material used is more than 2mm thick and cannot be molded on a fully automatic machine. It must be processed by a semi-automatic plastic forming machine for thick plates.

Thick gauge thermoforming material Thick blister materials mainly include ABS, Acrylic, PETG, PVC, PC, PP, PE, PS, etc., and various modified plastics, light board, leather board, transparent board.

Thick gauge thermoforming use Thick plate blister can be used for product design and manufacture of rear projection TV back cover, display, medical equipment, textile machinery, automobile accessories, precision electronics, turnover tray, cosmetic display frame.

Heavy gauge thermoforming products

Thick sheet plastic molding products mainly include refrigerator liner plastic, PS plastic, ABS plastic, outer shell plastic, plastic shell, thick plate plastic, thick-walled plastic, acrylic plastic, PMMA plastic, etc. Sheet plastic products are widely used in medical equipment, food equipment, instrument housings, electrical enclosures, automotive body jackets, pet trays, advertising light boxes, lighting, refrigerator industry, air conditioning industry, and home appliance accessories.

The heavy gauge vacuum forming product can replace the injection molding process, save the cost of expensive injection molds, and can replace the traditional hand-made, with advanced production technology, fast speed, and reliable quality.

Application of vacuum thermoforming process in medical shell industry

With the maturity and improvement of the technology of thick plate blistering, the application range is wider, especially in the medical housing industry. The combination of thick plate blistering and hand bonding process greatly reduces the production cost of the medical casing, simplifies the production process, and improves production efficiency.

To visit more vacuum thermoforming products, please kindly check our works .

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What is vacuum forming ? How can I DIY my surfboard ? 

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Five tips to identify raw plastics and recycled materials

Some of the plastic products such as washbasins in daily life are recycled materials extracted from waste plastics. The processing of waste plastics is very particular and needs to be cleaned, sorted and disinfected, and some small workshops are simply broken and treated, which is very harmful.

In general, disposable plastics are not allowed to be in direct contact with the skin, utensils related to eating, toys for children, etc. Let us teach you five tips to identify raw plastics and recycled materials processed from waste plastics:

1. Smell it. The original plastic has an aroma, and the recycled plastic has an unpleasant smell.

2. Look at the color. the new plastic color is purer, the purity is high, while the old plastic is a mostly dark color, the color is not correct. Simply put, the general transparent is the raw material, the recycled material is not transparent, many colors are mixed together, black is the main color.

3. Look at the toughness. The toughness of the original material is good, the chair is made of good load, the washbasin is resistant to falling, and the toughness of the recycled material is poor, brittle and easy to break. In particular, waste plastics that have been recycled many times are more susceptible to aging.

4. Compare the weight. The same size of plastic products, generally new plastic is lighter, waste plastic is relatively heavy.

5. Where to buy. The general large supermarkets, regular shopping malls, plastic products are relatively reliable, roadside shops and low-priced small commodity market stalls, be careful when buying.

For more details please kindly check our website : vacuumthermoforming.com

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A video shows you how to make a television back shell by vacuum thermoforming process .