The difference between blister and injection and blow molding

Blister packing: Plastic processing technology, the main principle is that after heating and softening the flat plastic hard sheet, vacuum is used to adsorb it on the surface of the mold, and it is formed after cooling, saving raw and auxiliary materials, light weight and convenient transportation.

Blow molding: The tubular plastic parison obtained by extruding nylon is placed in a split mold while it is still hot. After closing the mold, air is compressed in the parison to inflate the plastic parison and stick to the inner wall of the mold. mold to obtain various hollow products. The main products are: nylon casing film, bottle, jar, nylon tube, etc.

Injection molding: molding is mostly used for thermoplastics. It is similar to extrusion molding, the difference is that the molten plastic enters the closed mold through the nozzle, and the product is solidified and formed in the mold. More production of small boxes, daily necessities. Special-shaped parts, etc. It can also be used for hot plastic processing.

What is the material of PP blister material?

PP material is a kind of plastic, odorless, non-toxic, tasteless, high-density, milky white high-crystalline polymer without side chain, with excellent comprehensive performance. PP plastic material has the advantages of light texture, good toughness, good impact resistance, strong surface rigidity and not easy to be scratched. Cutlery, lunch boxes, etc.

The melting point of PP blister material reaches 167 degrees. It is the only material that can be heated in a microwave oven among all blister sheets. It is also a cold-resistant sheet, with a cold-resistant temperature of minus 35 degrees. Therefore, frozen food packaging, cold fresh For meat, cooked food, seafood and other food that needs to be refrigerated or heated, PP blister packaging is the choice of many businesses. PP blister is commonly used in daily life, such as: PP cooked food box, PP freezer box, PP pastry box, ice cream box, dumpling box, dumpling box, etc.
Sheet PP blister material is widely used in the food industry, and also used in electronic products. Conductive packaging products are used for packaging of electronic parts such as testing, TFT, optoelectronics, IC wafers, IC packaging, etc. to avoid contact with other charged items, resulting in Parts are damaged by sparks due to electrical friction.
PP blister thick board is used for industrial boards, storage racks, partitions, bottom plates, turnover boxes, etc. Modified PP plastic material is also used in auto parts. Such as: car bumper, power battery shell, etc. In addition, it is also used in the insulation layer of household appliances refrigerators, vegetable and fruit packaging boxes, clothing storage boxes, etc.

 

The medical and health industry has an increasing demand for blister packaging

With the development of the market in recent years, the medical and health industry has an increasing demand for blister packaging, which is good news for blister processing factories.

The blister packaging market size is estimated to grow from USD 18.65 billion in 2016 to USD 28.38 billion in 2022 at an estimated CAGR of 7.2%. The blister packaging market is expected to grow at a high rate owing to factors such as growing middle-class population, increasing demand in the healthcare industry, and popularity of convenient packaging.
In terms of value, the plastic film segment accounts for the largest market share by material and is expected to grow at the highest CAGR during the forecast period. This growth is due to its use in almost all types of packaging as it provides good product visibility and provides safe and attractive packaging. Plastic is also used as a raw material for making blister packaging because it is durable, clean, lightweight, transparent and cost-effective.

In the usage segment, the pharmaceutical industry is expected to grow at the highest rate due to high demand for pharmaceutical packaging while it provides durability and product protection and safety features. Blister packaging for health care products reduces the possibility of product contamination. It also protects healthcare products from moisture, gases, light and temperature.
In 2016, North America held the highest share of the total blister packaging market in terms of value, followed by Asia Pacific and Europe, as manufacturers focused on developing low-cost blister packaging. However, as the blister packaging market in developed countries matures, the US and Canadian markets are expected to grow the fastest between 2016 and 2022. Asia Pacific is expected to grow the fastest over the forecast period. This is attributed to the large customer base of FMCG products and consumer durables owing to the growing population of the countries in the region; thus, this is expected to instead drive the growth of the blister packaging market.

Talking about the advantages of blister packaging

Generally speaking, blister packaging is a plastic product that protects transportation. This kind of packaging can improve the appearance level and the value of the goods. These are just some simple advantages of blister packaging, and it can better reflect its ease of use after being loaded into physical products.

The most common blister packaging is mainly used for digital items. There are many products in the product packaging box to be described in detail, and the products will be directly packaged for fusion. The digital items have a certain smooth angle, and white materials or reflective glass will be used. Material. This will not only increase the good brightness of the item, but will not affect the consumer’s visual effect.

Industry In China, compared with developed countries in the West, there is no more reason why China’s packaging industry does not have their innovative classification. Blister products are a force without updated packaging in China. You can see this kind of packaging when you go to a hardware store or a digital toy store. When you look at the goods directly on the shelf, you can clearly see that the type of packaging is similar, only For our blister packaging has lost a kind of differentiation, if only the visual feeling is similar, how do you think consumers will choose? In fact, these can be guessed. If the goods will do better than their counterparts, even with brighter eyes, the items hanging on the shelves can at least attract the attention of consumers.

To produce exquisite packaging, it also depends on the absorption of items and items between the merchant and the blister packaging manufacturer. The proposed methods and solutions all have complete confidence in themselves. This is the second one is the production of processing plants. Ability, where a value is between genders. Packaging terminology is also indispensable.

PP blister box packaging box advantages

PP blister box packaging box is a blister packaging box made of PP sheets through a vacuum blister forming process. It has the characteristics of non-toxic, odorless, hygienic, high mechanical strength and good barrier properties. It is now a relatively common plastic. packaging products. It is widely used because of its following advantages.
1. PP blister box packaging box can improve the price and image of the product. For example, if the trademark and brand are printed on the box body, it can also play a role in spreading and expanding the brand of the company, and promote the awareness of the company.
2. The PP blister box can play the role of displaying and protecting the product. By effectively placing the products packaged in the PP blister box, your products can be displayed in a perfect image, thereby promoting product sales.
3. The products packaged in PP blister boxes are mostly electronic, IT, industrial parts, toys, stationery, egg trays, handicrafts and cosmetics and other fragile commodities, which can achieve separation, shockproof, moisture-proof, sunscreen and other functions, which can improve the product quality. At the same time, it provides more secure transport and storage protection.

 

How to deal with pitting on the surface of blister packaging

Generally speaking, the glossiness of the blister packaging box refers to the degree of specular reflection on the surface of the packaging box, which is indicated by a percentage. In addition to specular reflection, there is also diffuse reflection on the surface of the packaging box, which reduces the glossiness of the packaging box. The higher the gloss of the packaging box, the more the surface can reflect light like a mirror, and the more bright appearance characteristics can be displayed. Blister packaging is a general term for producing plastic products by a blister process and packaging the products with corresponding equipment. How to solve the pitting on the surface of products produced by blister packaging?

Analysis of the reasons: 1. The particle size of the glue is large, and thin PVC is used, which is easy to produce pitting, which is characterized by uniform dispersion; 2. When used with a curing agent, the curing agent is not completely dispersed; 3. The surface of the board is not completely dispersed After cleaning, or after spraying glue, the dust in the workshop is large and it sticks to it. The pockmarks are very unevenly dispersed and have different sizes; 4. The viscosity of the glue is too large and the dispersion is uneven; 5. The viscosity of the glue is too small or The solid content is low, causing the board to fluff. Such pits generally appear in the corners of the grooves and appear in blocks; 6. The air pressure of the spray gun is not enough, and the atomization is not good; 7. The glue is not filtered. So what kind of solution does the blister packaging factory have? General solutions: 1. Choose glue with a small particle size; 2. When preparing a curing agent, prolong the stirring time so that the curing agent can be completely dispersed; 3. Clean the surface of the board before spraying glue, and separate the glue spraying workshop; 4. Choose glue with suitable viscosity or high solid content; 5. After the glue is dry, it can be polished with fine sandpaper; 6. Increase the vacuum degree to adjust the atomization effect; 7. When using, filter it with a filter screen.

What material is the blister packaging

Blister packaging refers to a kind of plastic processing technology. The principle of production and processing is to put the prepared mold shape on the blister forming machine, and after heating the flat plastic sheet to soften, move it to the top of the mold and then use vacuum adsorption. The principle is attached to the surface of the mold, and it is formed after cooling. Blister packaging is divided into thin sheet and thick sheet.
Sheet blister packaging is mainly made of PVC, PP, PET, PETG, PS, GAG, BOPS, flocking, antistatic, conductive and other blister sheets. The main products include: blister tray, blister box, blister, vacuum cover etc. Blister packaging production process processing, choose wood mold, plastic mold, gypsum mold, electroplating mold or aluminum mold according to sample specifications or requirements. The plastic sheet is loaded into the applicable size, and then the sheet is put into the heating wooden cabinet to make it completely fixed, and then the wooden cabinet and the plastic sheet are placed on the constant temperature furnace for softening treatment. Put the softened plastic sheet together with the wooden cabinet in the vacuum chamber, turn on the suction switch, and suck out the air in the vacuum chamber. After the plastic sheet is cooled, the same concave package as the mold is obtained. After the production and processing of blister packaging products, the products are trimmed and finished, and then they can be sold after packaging.
The thickness of thin blister packaging is generally 0.14-2mm, and if it exceeds 2mm, it is a thick blister packaging. Sheet blister machine includes automatic high-speed blister forming machine, blister packaging machine on-board cutting machine, high frequency machine, edge folding machine, sealing machine, punching machine, etc. Sheet blister packaging is widely used in food, electronics, stationery, toys, hardware, daily chemical gifts, medical and other industries. The blister packaging is of high quality and low price, which can beautify your products and attract more customers.

Thick-sheet blister packaging is mainly made of common materials such as ABS, PE, PMMA, PC, PVC, etc. From the production process, thick-sheet blister packaging has more processing processes such as milling, engraving, and grinding than thin-sheet blister packaging. Thicker, thick sheet blister thickness is generally 2mm-12mm. In terms of size, the thick sheet blister product can reach the molding size of 2800*1600*1000mm (length*width*height). Thick sheet blister is often used in large machine shells, charging pile shells, bubble houses, display stands, advertisements, bases, Image cards, sports equipment shells, beauty equipment shells, medical equipment shells, golf cart shells, sightseeing car roofs, turnover trays, game console shells, refrigerator liner, light boxes, etc. Thick sheet blister packaging equipment includes automatic thick sheet blister machine, semi-automatic thick sheet blister machine, CNC processing equipment, cutting machine, punching machine, etc.

The use and performance of anti-static plastic tray

The anti-static blister tray is a blister tray that eliminates static electricity. The anti-static tray has the characteristics of toughness, strong bearing capacity and high temperature resistance. It is lightweight, durable and stackable. It can be applied to various auto parts and electronic components.

The main purpose of antistatic plastic tray:
To eliminate static electricity, it is widely used in turnaround loading, packaging, storage and transportation of electronic devices and products in the production process. In the industry, it is also called a static conductive tray; the height of the tray is generally less than 100mm; it is suitable for the container for the turnover storage of precision electronic components. According to the customer’s electronic component requirements, there are different requirements for the size.

The anti-static blister tray is an ideal tool for storing electronic components. Due to the addition of special polymer chains in the raw materials, the finished product has long-term static dissipative properties. The finished product has good mechanical strength and heat resistance; good impact resistance and strong chemical corrosion resistance. It will not change its anti-static performance due to environment, time and temperature.

The anti-static blister tray can effectively release the static charge accumulated on the surface of the object, so that it will not generate charge accumulation and high potential difference; it can greatly reduce the damage rate of electronic products in the production process, reduce costs, and improve product quality and profit.

The performance of antistatic blister tray:
It has anti-folding, anti-aging, high bearing strength, tensile, compression, tearing, high temperature, and can be used for both turnover and finished product shipping. It is lightweight, durable and stackable. Various specifications and sizes can be customized according to user needs, with covers, dust-proof, anti-static, and beautiful appearance. Generally, anti-static trays are designed and manufactured according to the size provided by customers, so that they can be loaded reasonably, and multiple trays can be overlapped, making effective use of workshop space, increasing the storage capacity of electronic components, PCB boards, and dust-free workshop components, saving production costs.

What problems will occur when forming blister products

When the blister product is formed, factors such as pulling lines, scratches, crystal points, air bubbles, water ripples, etc. will appear.

Pull wire: Some unwanted line protrusions (not on the mold) produced during blister molding production, need to re-modify the mold (reduce the height and increase the roundness) and add additional pressure mold (we call it the upper mold) to solve. When the pull wire is too large, it is regarded as a defective product and cannot be used for high-end blister packaging. However, in the field of spare parts turnover trays, as long as the pull wire is neatly arranged and does not affect the use function, it should be regarded as a qualified product. Pull line is also known as: pull hill, cramp and so on.

Scratches: There are scratches on the finished blister, especially the transparent blister. If the marks are too long or too large, the blister will become a defective product and cannot be used for high-end packaging.

Crystal point: In the production process of blister sheet, a transparent defect caused by fine dust in the air falling on the heated plastic material, especially in the production process of transparent blister sheet Too large, too much, as defective.

Air bubbles: During the production of blister sheets, the heated plastic material contains air, so the finished sheet has air bubbles, especially in the production process of transparent blister sheets, if the bubbles are too large, If it is too much, it will be regarded as a defective product.

Water ripples: In the production process of blister sheets, due to different materials and processing techniques, the surface of the finished sheet has water ripples, especially in the production process of transparent blister sheets, the water ripples are too large , if it is too much, it will be regarded as a defective product. In general, the thicker the sheet, the more obvious the water ripples. Qualified PET materials rarely have water ripples, but most PVCs have water ripples.

Advantages of moon cake blister box packaging

The moon cake blister packaging box is a blister product that is processed with plastic. The production principle of the product is to heat the flat plastic hard sheet material to soften it, and then use vacuum to absorb it on the surface of the mold, and then cool it to form. Due to the direct contact with food, the material must be safe and non-toxic food-grade packaging materials. The moon cake blister box is generally made of food-grade material PP base, and the PP material is soft. In order to strengthen the bearing capacity of the PP blister base, the surface adopts the reinforcement technology . The shape of a single moon cake box base is round and square.
In order to create a high-end atmosphere for moon cakes, some merchants often use gift boxes to package moon cakes. The inner support of gift boxes moon cake boxes uses squares to hold 4 pieces/8 pieces/16 pieces of moon cakes. The single packaged moon cakes are placed in the grooves. The box is made of PVC material with gold film on the surface or PET material with flocking on the surface, that is, gold-plated blister base, flocking blister base, which increases the commercial price of moon cakes and brings better income.
The advantages of moon cake blister packaging box: saving raw and auxiliary materials, light weight, convenient transportation, good sealing performance, in line with the requirements of environmental protection and green packaging; it can pack any special-shaped products, and no additional buffer materials are required for packing; the packaged products are transparent and visible, Beautiful appearance, easy to sell, and suitable for mechanized and automated packaging, convenient for modern management, saving manpower and improving efficiency.