EVA linings did not need to be processed by engraving at first. As a shockproof material for product transportation protection, EVA has excellent shock resistance. At the same time, EVA is easy to process and can be easily cut with ordinary knives, which means that people can directly buy EVA sheets and then cut them into the required size with knives according to the packaging needs.

Although this simple method can also provide sufficient protection, for some special-purpose products or for some products that require packaging appearance, direct cutting obviously cannot meet people’s needs. For linings of the same shape and with particularly large demand, manual cutting is too primitive, so die-cutting has its place. It can quickly mass-produce EVA linings of the same specification, so it can meet the protective packaging needs of a large number of products in a single packaging form.

However, the die-cutting method also has its shortcomings, that is, it is difficult to meet the processing of packaging linings of different external dimensions on the same lining, especially for products with multiple thickness and depth requirements. On the other hand, die-cutting cannot achieve the one-piece molding processing of EVA inner support. For some products with particularly high precision requirements, engraving is almost the only choice. Although EVA foam cannot achieve the same processing accuracy as metal, for packaging, only engraving can achieve an accuracy of 1mm or even less.

Back to the title, in which industries can EVA engraved linings be used? The answer is actually self-evident. It is applicable to all industries that have requirements for product packaging. Including but not limited to consumer electronics, medical supplies, battery cells, cosmetics, gifts, and wine…

We are often asked a question, how to confirm cooperation and start production?

After receiving the customer’s inquiry, we will understand the actual needs of the customer, and then we will recommend the material with suitable hardness according to the customer’s needs.

Generally, we will ask the customer whether the customer already has a lining drawing. If there is a drawing, we will recommend the appropriate hardness according to the size and packaging products. Then we will check the drawing, and if there is a position that is not suitable for production, we will suggest the customer to make corresponding adjustments.

If the customer has a lining sample, the customer can send the sample to us, and we will make a drawing based on the sample and send it back to the customer for confirmation.

If there is no drawing or sample, the customer can also send the product to us, we will measure the product for the customer and select the appropriate EVA hardness and thickness according to the product, and then draw a suitable lining packaging drawing, and produce it after the customer confirms.

There are several different processing methods for EVA lining processing;

One is stamping: the stamped eva lining is made with a die and a small stamping machine. If the thickness of the product exceeds 3CM, the four sides may feel concave and convex, and there will be this phenomenon at the position where there are holes on the surface. In addition, the thickness of the stamped product cannot be too thick. If it is too thick, it will make it look ugly and the position where there are holes will feel concave.

Another is carving: the edge of the integrally carved eva lining is straight. If the thickness of the eva lining is 9CM, the four edges can be carved straight, but if it is stamped by a machine, the thickness of 9CM needs to be glued together with two to three layers.

Another is injection molding: this method is rarely used. On the one hand, the mold cost is high, and on the other hand, the molding effect is not very good.

After I quoted a price to a customer some time ago, the customer casually asked what is the difference between engraved and stamped EVA linings?

At that time, I simply explained it to the customer in terms of positioning, shape and price.

First of all, the engraved EVA lining is positioned more advanced. Usually, when the product to be packaged belongs to the advanced positioning, the engraved one will highlight its value. Because the lining produced by engraving will have better quality and consistency in terms of individual;

In addition, engraving usually adopts an integrated molding processing method, so it works better on some multi-layered and complex linings, while stamping requires layered stamping and later splicing, which is difficult to align one by one.

There is also a difference in price. For some simple shapes and when there is sufficient demand, the price advantage of stamping will be more obvious, because when a set of molds can produce more products, the mold cost can be ignored.

To sum up briefly, the processing method to be used depends on the product positioning and the cost. Both methods have their own advantages.

I only have the test tube samples and a paper box. I want to put 6 large and 5 small test tubes in different quantities. Can it be done?

Yes! We will design a specific plan for you based on your actual product, and then make samples to confirm the details for subsequent mass production. In terms of color, white EVA foam is used, which is more compatible with the paper box overall.

When we buy things, of course we like to buy things that are clean. For the product packaging lining, of course we also require it to be clean and without burrs. This is a very common requirement, but for many manufacturers, it is not easy to make EVA lining products without burrs. If it is cut with a knife, it is okay. After all, as long as the knife is sharp enough, the cut product will be smooth and flat. However, the knife cutting process can only cut the product into pieces, and other shapes are to be glued together with glue. Of course, the die cutting process can also be used, which can also reduce burrs, but this can only be shaped on one plane.

If you want to form it in one piece and at the same time meet the requirements of fitting with the product, and multiple accessories are neatly distributed and arranged, then only mold injection molding or engraving production is available. EVA foam is a relatively soft material, and if it is injected with a mold, there will be more burrs on the edge, or water edges. If you want to achieve a clean and simple shape, then engraving is currently the best solution.

And because of the material, if the speed of the equipment is too slow during processing, many fine burrs will be produced, which need to be cut off little by little with scissors later, so the high quality and consistency of the EVA inner tray products cannot be guaranteed. If the speed is too fast, the product will be burned hard due to the heat of the equipment. The speed is closely related to the shape of the product. How to produce EVA foam products that are the same as the 3D drawings is a problem that tests technology and experience.

Many times, customers just need a certain product, but they don’t understand the product at all? Let’s take a few simple examples. There are many people driving, but when the car breaks down, customers don’t need to know how to repair the car themselves, and they don’t even need to understand the most basic principles of the car. They just need to use it. For mobile phones that almost everyone needs to use, we don’t need to know how the chip is made, we just need to buy the phone and use it. When we go online, we don’t need to understand how the information on the network is transmitted from one location to another. . . There are many such examples. It is enough to show that there is no conflict between whether the customer understands the product and the customer needs to buy the product.

The same is true for the EVA foam we produce ourselves. We understand the product and the production process, but the customer does not need to understand how the product comes from. What the customer needs to do is to put forward their own needs, and then we help the customer meet the needs.
For us, customers give us requirements, provide drawings of EVA linings, or actual products, and we will provide drawings to customers based on the products. If there is room for delivery, we will produce samples according to the requirements first. If there are still adjustments that need to be made, we will deal with them before the mass production. This allows customers to produce large quantities more quickly. Customers do not need to understand the product at all, they only need to put forward their needs for EVA foam products, and we will solve the rest. This is a more market-oriented approach.

A few days ago, we received an inquiry from a customer, asking for the inner tray of the box to be customized according to the size of the outer box provided. The outer box is a suitcase mass-produced with an aluminum public mold. The inner liner is a set of product protection EVA foam lining customized according to the shape and size of the customer’s product.

The customer is currently using it for trial production, so the number required is not much, only more than ten. We preliminarily confirmed the drawings based on the size and appearance provided by the customer, and calculated the cost based on more than ten quantities. Then we quoted the price to the customer.

After getting the price, the customer replied that the suitcase they purchased was only a few dozen yuan, so how come the cost of the foam is almost twice that of the box? The cost is too high!

Here, we can understand the customer’s confusion. The customer believes that the purchase price of a suitcase as the main body is only a few dozen yuan. Logically, the inner lining as a foam lining should be very cheap.

This idea is right in that if the cost of the material is calculated alone, then the foam can indeed be made very cheap. For example, using sponge or EPE foam as the inner lining, the cost of the foam should be controlled to a few yuan. In this way, the lining should indeed be much cheaper.

The customer overlooked another problem. The customer has requirements for the load-bearing capacity of the foam. From the material point of view, too light a material cannot protect the product, so we use high-quality EVA foam. Because the liner is customized according to the customer’s product, we need to make drawings according to the product, and then adjust the machine for production after confirmation. We can make drawings according to the customer’s product for free, but the cost of adjusting the machine is for the customer. If the quantity is too small, this cost cannot be spread out, so the unit price appears to be relatively high.

Why is the price of the outer box so cheap when the quantity is also small? Because the customer purchases the manufacturer’s batch production, and the manufacturer produces enough, so as to reduce the cost of molds, etc.

The customer can actually look at this problem from another perspective. This can be used as the cost of proofing. In the later stage of mass production, we can return the cost of the sample according to the order quantity. In this way, the price of more than ten EVA liners will become very cheap, or even free.