Drip Molding Process

The drip process has been widely used in the decoration of various logo nameplates, cards, fine crafts and high grade book covers. It is also known as micro-injection.It is dripping white or colorful drip jewelry on the surface of knitted cotton and various chemical fiber fabrics and textiles. Just like a PVC silicone like product, bags, backpacks, clothing and more forth, Most of the logos used on those are of this type.

Processing is more complex, we often say the silicone trademark, silicone drip label, etc. Belongs to this kind of drip, PVC drip machine can also be made lots of products. Like drip shoes, shoe insoles, shoe soles, sofa backrests, dining table mats, car interior decoration and other series of products.

PVCÌý And Silicone Drip Molding Process

PVC products are primarily plastic products making use of the drip moulding process. In this process, liquid material is dripped into a mould, heated, baked and cooled over a period of time. Finally it is poured into the mould. The raw material for silicone is a liquid and the material is contained in a syringe. The raw material is dripped onto the mould and vulcanised by heating. It has the feature that a product can be dripped in a variety of different colours according to requirements. This process therefore makes most crafts. Examples include multi-coloured silicone bracelets, silicone mobile phone covers with various colour patterns, and more.

Silicone And PVC

Many people know about PVC and silicone, but are not sure what they are. In fact, PVC and silicone are materials that have many applications in life. Everyone wants to use something made of PVC and silicone. In reality, few people really know the difference between PVC and silicone, so follow us to find out the difference.

PVC is a material called polyvinyl chloride. The main component is polyvinyl chloride with the addition of other components. Such as heat resistance, toughness and ductility. The top layer of the sheet is lacquer, the middle layer is polyvinylchloride. The bottom layer is a back-coated adhesive.

Silica gel is a highly active adsorbent material, amorphous, with the chemical formula mSiO2-nH2O. It does not react with any substance except strong bases and hydraulic fluoride, is insoluble in water and any solvent, non-toxic and tasteless, chemically stable.

Differences Between Silicone And PVC

PVC drip moulding and silicone are both commonly used in crafts nowadays. In fact, there is a big difference between the two, the main differences between silicone and PVC are as follows.

• PVC products are made from PVC and oil, plus a colour paste. The raw material cools down by heating and cooling, using a micro-injection drip process. On the other hand, silicone is simply made from silicone plus a colour paste and other chemical elements. That is pressed and mixed by a glue making machine. Then placed in a mould and cooled by an oil press.
• PVC products are relatively rough compared to silicone products, while silicone products have a smooth surface and are colored.
• silicone products are soft, tough and flexible, pvc soft rubber is relatively less hard, both soft and hard can be adjusted, but PVC is not tough.
• PVC material is available as a normal material and an environmentally friendly material, also known as ATBC-PVC. silicone allows for ROHS certification and is environmentally friendly.
• Silicone products are generally more transparent. PVC products burn black and have an unpleasant smell when burning.
• Silicone products are more heat and cold resistant than PVC products. Silicone products are microwavable, but PVC is not.

Are PVC And Silicone Products Harmful?

PVC drip moulding is a polymeric substance of vinyl. PVC materials are often in practical use with the addition of lubricants, auxiliary process agents, colors, impact agents and other additives. It has non-flammability, high strength, resistance to weathering and excellent geometric stability. It is generally shape by 100-200 high temperature, moulding into the designed form as required in its viscous flow state. Then curing and forming at room temperature. The finished PVC drip moulding, therefore, is generally harmless. It is important to note that the logo of PVC material is generally not past food grade. No one will generally eat it by mistake either.

PVC and silicone are both non-toxic, PVC is polyvinyl chloride. Both are relatively common plastic materials. In the process of production, plasticizers and antioxidants need to be adding, these auxiliary materials are toxic, so choose PVC products to choose the regular manufacturers factory.ÌýSo that the added auxiliary materials in line with the standards, there is no problem. The silicone itself has good biological compatibilityÌýand is not irritating to the human body, nor is it toxic, nor does it cause allergies.

Compared toÌýPVC, silicone is more durable.Silicone is more flexible than PVCÌýand has a better heat and cold resistance than PVC.ÌýIn terms of material, silicone is the better material.ÌýSilicone is an environmentally friendly material. PVC is not an environmentally friendly material.

Ìý

PVC Silicone Drip Molding Process Machine

The PVC Silicone Drip Molding Process Machine is relies on a three-dimensional(3D) movement system to bring the PVC paste dispensing needle to the designated position in the drip mould. The amount of plastic dispensing in question is determined by the time taken to extrude the paste and the speed at which the needle moves.The drip moulding machine consists of two main parts: the control system and the machine structure. The drip moulding machines include 4-colour drip moulding machines, 6-colour drip moulding machines, 12-colour drip moulding machines and so on. There are available in both manual and automatic versions.

Automatic 12-color Drip Molding Machine Features.

First: Save labor cost and greatly improve production efficiency. One automatic drip moulding machine can replace 4-6 people to replace the manual operation of skilled workers.1 person can operate several machines at the same time, saving labour costs and shortening production cycles.

Second: Special software, easy to operate. Multiple needles and colors, accurate drip material. Needle 8-12 colors, multiple needles can dispense glue simultaneously.

Third: High precision, go round, three-dimensional fast and smooth. Coordinate system control, precision up to 0.01mm. Do out the product quality is very stable. Product qualification rate of 99.9% or more, can improve the work efficiency.

Finally: The drip molding machine can undertake repeated and precise positioning of the dispensing work. During normal production, the needle of the dispensing machine is not in contact with the mould. The height from the mould can reach an adjustable height. The dispensing speed of the dispensing machine is adjustable, the amount of glue output is adjustable. There is no need to replenish the glue and wipe the mould, the thickness is consistent without trimming the edges.

Manual Drip Moulding Machine Characteristics

Mainly for small production quantities and a variety of products. It is convenient for manual work and can precisely control the dispensing time. With appropriate pressure adjustment, you can dispense immediately. Manual dispensing machines, also known as semi-automatic dispensing machines. Can only be used manually by holding the dispensing head and dispensing on the desired product. Due to the lack of mechanical movement, the machine is much less efficient in its operation. The manual dispensing machine has two parts. Like the dispenser controller and the dispensing syringe. It is suitable for the dispensing of a wide range of irregular products.

The post PVC And Silicone Drip Molding Process appeared first on zymachines.

How to prepare liquid PVC material? In the last article(Do you know what’s the liquid PVC material?), we know that liquid PVC is mixed by PVC powder, DINP oil, PVC color pigment and otherÌýsome specific stabilizers.

We look back our factory recipe:

In here, weÌýhypothesis that we prepare 20kg liquid PVC material in one time, so we need:

Mixing processing

Next, start Mixing machine,Ìýat the same time of mixing, slowly put into the 10.8kg PVC powder.

Why slowly? On the one hand, it canÌýensure that the powder and oil mix utter. On the other hand, it can alleviate machine pressure andÌýprotectÌýthe machine.

After 5 minutes mixing, when the powder and oil mix better, we need to add the 0.4kg color pigment, 0.3kgÌýBarium-zinc stabilizer, 0.2kgÌýAntioxidant and 0.2kgÌýSoybean oil.ÌýBy the way,Ìýif you asked about the quality of the products is not high, you can only add the color pigment.

Finally,Ìýcontinue to mixÌýfor 5 to 10 minutes.

Vacuuming processing

After Mixing processing, we have got the liquid PVC material, and can use for producing. But why also need vacuuming processing?Ìý

Because in mixing processing, there is so much air in material. Although can produce processing, the end products will hasÌýa lot of bubbles, it’sÌýunqualified.ÌýSo vacuuming processing is a very important step to prepare liquid PVC material.

How to do?

In here we need a vacuum barrel andÌývacuum pump. First, put the material barrel into vacuum barrel, seal and connect the vacuum pump.ÌýAfter the connection is verified, start.

Attention: At first, you must be careful. At the moment of vacuum pump starting,Ìýthe pressure difference inside and outside is big, itÌýwill lead to a lot of bubbles, even lead to the raw material overflow from material barrel. So you need to be careful, when the bubbles is too much, you need to open theÌýair inlet cock, butÌýclose right now. So easy!

And, also is this reason, the liquid PVC material volume shouldn’t more than 70% of material barrel, 60% is best.

The vacuuming processing usually last 15-45 minutes, it’s according to the volume and pumping speed. For example, 30kg material, 15L/S pumping speed, need 25 minutes.

Storage and use

After vacuuming processing, we have got the final material. Now you can storage, also can use to producing.

For storage, in our factory(Â鶹ÊÓƵ Machinery), usually sealed storage in vacuum barrel, can keep several years. But needÌýsealed storage inÌýshady and cool place and cannot to move itÌýviolently. If won’tÌýsealed storage, it’s best to use it at the same day.

For producing, there is a note that you shouldÌýpour the materialÌýinto machine barrel slowly, too.ÌýThat everything is in order to prevent the air into the raw material again.

That’s all. If you want to learn about the Mixing machine, Vacuum machine, you can visit our website. We are a leading manufacturer of PVC & silicone products making machine, have more than 20 years. Our main machine is PVC products making machine, Car mat making machine and Silicone products forming machine.

(Vixen wang)

The post How to prepare liquid PVC material? appeared first on zymachines.

What’s the liquid PVC material? This, Liquid PVC material is mixed by PVC powder, DINP oil and PVC color pigment. And add some specificÌýstabilizers.

• What’s the PVC?

PVC isÌýPolyvinyl Chloride, is a kind of Plastic. AndÌýPlastic is a kind of common materials in modern society, is one of the three polymer materials in the world. By the way, the other two are Rubber and Fiber.

Due to the high plasticity, the characteristics of stable performance,ÌýPlastic has been widely used inÌýagriculture, fisheries, chemical industry and engineering etc.Ìýfields.

• What’s the PVC powder?

At first, PVC isÌýextracted from resin, now PVC is the powder, it’s just PVC powder. However,Ìýnow the PVC powder has poor liquidity and stability, cannot be used for production.

So, in order to solve this trouble, people will addÌýthe heat stabilizer and anti-aging agent to enhance its features.

• What’s the DINP oil?

Then, DINP oilÌýis a general-purpose plasticizer. ItÌýcan strengthen PVC powder plasticity and improve the toughness of the endÌýproduct. And the most important advantage, use the DINP oil mixing, the final material is environmental(DINP oil has passed the Rohs and PaHsÌýcertification).

If use the DOP oil, although cheap, it isn’t environmental, and the end product will smell. It’s unhealthy for people and nature.

• What’s the PVC color pigment?

Next, PVC color pigmentÌýis a derivative of PVC production process.ÌýFor different colors, add different pigments andÌýauxiliaries, thenÌýstir evenly.

And one, as the PVC color pigment price, usually the black and white is cheapest, the gold and purple is most expensive.

• Attention:

If you want the end product with better quality, you also need to add others.ÌýBarium-zinc stabilizer,ÌýAntioxidant andÌýSoybean oil.

Barium-zinc stabilizer can let the end product softer and hasÌýmore stable nature.

Antioxidant canÌýkeep the color stability in the heating processing. For example,Ìýif without Antioxidant, theÌýtransparent colorÌýwill become yellow after heating.

Soybean oil can let the material moreÌýheat-resistant, because we use the 250 ℃ temperature to heating forming.

By the way, the liquid PVC is no smell at first, if you want your product more good smell, you can add each smellÌýperfume.

• About recipe

Next, let’s say the recipe, each factory always has their own recipe, it’s flexible. Our recipe is the following:

So, if we want to prepare 200 KG material:

If you want softer, you need to add more oil;

If you want harder, you need to add more powder.

We also tested the power:oil=100:100, it seems wonderful, too.

• Liquid PVC material apply:

Finally, liquid PVCÌýmaterial has a extensive apply. We are a machine factory(Â鶹ÊÓƵ), our PVC products production line just use the liquid PVC material.

It can volume produce PVC label, PVC patch, PVC keychain, PVC luggage tag, PVC shoe sole, PVC shoe upper, PVC USB disk etc.

If you like it, welcome to visit our website.

That’s all, thank you.

(Vixen wang)

The post Do you know what’s the liquid PVC material? appeared first on zymachines.