5 aspects of pulp molding packaging can withstand how much pressure

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Pulp molding packaging can withstand pressures ranging from 0.5 to 3 psi, with enhancements like increased density, customized designs, moisture treatments, and stacking features to suit specific needs.

Basic Pressure Resistance

Pulp molding packaging is a prevalent option due to its environmental friendliness and biodegradability. In addition, it does offer adequate pressure resistance for different types of applications. Indeed, the latter type of packaging usually supports 0.5 to 1 psi, which is more than enough to protect an egg, light bulb, electronic gadget, or any other item usually placed in packaging from the usual stresses delivered during shipping or handling. For instance, a standard egg carton was designed to hold a dozen of eggs, usually delivers easily by an individual or shipping offers. The molded pulp package has such design features as compartments that hold the eggs intact. Thus, when an impact or pressure is delivered, the pulp absorbs the pressure and protects the content. In other words, the pressure is dispersed throughout the material, and thus the pressure that would usually destroy an egg is not applied to the shell. The product is, therefore, seen as an applicable choice when working with products requiring support not higher than 1 psi.

To make the support capacity slightly higher than 1 psi, the manufacturers can either choose denser pulp or use a double layer. Indeed, this alteration is important for products weighing more than an egg does. For example, a wine bottle delivered in a pulp molding packaging with the bottom thickening might be packed in such container, as 1.5 psi is the magnitude of pressure with which the bottle can successfully withstand occasional falls or bumps. Finally, the packing’s durability and usability are linearly dependent on the material’s thickness and density, and in many cases, manufacturers have to create custom designs for the packed product. For instance, an electronic gadget will be packed with molded pulp insert with narrowly defined shape. The insert will be denser than other packages due to the more “strings of other molded pulp packages” that might be used to enhance the shock absorption.


Enhanced Designs

Pulp molding packaging is no longer simply formed, but advanced in terms of design. This improved design allows the pulp molding for more pressure, and, as such, it is no longer only limited to lightweight items, but those with heavier demands for pressure containment. There are various examples where the pressure containment doubled to around 2 psi, allowing to contain automotive parts, which present a particular challenge. One such example is the packaging used for the smartphones, where precision and pressure containment is of the utmost importance, which is why it is designed in such a way so as to contain the parts.

Pressure containment is doubled, because each part is precisely contained in a custom, molded cavity, which is designed to apply pressure on the part in case of external forces. A custom pulp tray designed to contain the smartphone can withhold drop test and pressures caused by packages. However, additional layers allow for higher pressure concentration, it can also be fitted with added material to further suppress the pressure, and some chemical applications, which improve resistance to water and moisture. These do not only keep the material intact in high humidity conditions, but also improve the material’s durability and overall strength. An example is moisture-treated pulp used to ship a camera internationally.

Material Density

Pulp molding packaging material’s density can be considered one of the key properties because it directly affects such a parameter as pressure resistance. This type of material is used to protect a variety of goods and should be adapted for each type of good. Standard pressure resistance level for less dense pulp configuration is 0.5 to 1 psi, while compressed fibers used in higher density configurations pack approximately 2 psi, or even more. This feature may be highly beneficial to a number of consumer goods producers, such as those specializing in hardware and tools. By increasing the density of the pulp used to create the mold, the packaging can be forced to withstand the maximum psi without breaking and thus protecting the heavy objects placed inside.

In terms of heavier goods, this property allows manufacturers to ensure that the pulp package will remain unbroken by the items it carries. Packaging heavier products, such as hammers or other construction tools require a high density package to avoid breaking under the pressure added by the tools. The pulp can be made denser by adding more fine paper to it, which will bind more effectively and harden during production. The material is then less likely to hide air bubbles inside and will withstand the crashing of outside pressures. This property is highly beneficial in the case of products or their parts that are shipped in bulk and stacked in piles on top of one another.


Stacking Strength

Stacking ability as one of the crucial packaging strength properties for pulp molding, is especially relevant to products after being packed and accumulating loads of numerous layers during transportation and storage. In most cases, improved stacking strength allows tested products to withstand much more pressure, both in intensity and duration, and carry numerous similar packages stacked on top without destroying the contents.

One of the prominent examples of this improvement may be the performance of the packaging auxiliary function for products packed in cans on the shelves of large supermarkets. Depending on the expected number of trays stacked on top of the package during transportation and on the store shelves, the pulp molding inserts holding these cans may be designed with the ability to withstand up to 5 psi to the load of the upper level or levels of packaging.

It is important to combine trays and other types of baking with canned food for further strength, so cases must be especially resistant to Shaking and Stacking. Such properties are possible due to the design features of comparably thicker walls and slots to improve the strength of the trays and distribute the load more evenly. This element is important for loading many layers of beverage carrying cardboard trays on which the bottles will stand in the middle of the package, and such layers can be dozens!

Consequently, in the formulation of a cost analysis, the negative consequences of a decrease in the strength of such stacking should be considered together with the infusion of higher-quality, denser, and, therefore, more expensive pulp solution quantities. Thus, the danger in monetary terms is placed on provoking the worthless transport of several dozen boxes of bottles, simply because the packaging for the transport of the lowest of them will not withstand the weight of the boxes above and will simply crumple from unnecessary raw materials that can be economically justified.

Customization for Specific Needs

Customization is the greatest advantage of pulp molding packaging when it comes to pressure resistance. As manufacturers can tailor such products to specific needs and requirements of their customers, they can be confident that they can accommodate the unique demands of their products. Therefore, no matter if they are selling delicate electronics or sturdy automotive parts, manufacturers can rest assured that their items get just the necessary protection against pressure during the shipping and handling stages.

For example, manufacturers often use custom-designed pulp molded packaging for their smartphones. They can be made of high-density pulp molding and have professionally cut cavities into which the phone fits exactly. The phone is secure and cannot move around the packaging during shipping, and it gets more resistant to compressive forces that can damage it. This way, the pulp molding in such packaging can be customized to withstand pressure of up to 3 psi, meaning that even heavier objects can get safe in this type of packaging. As for the heavier stuff that also require sturdy packaging, the pulp mixture can be enhanced with special synthetic fibers or additives that enable them to withstand higher pressures. Even under a larger load, pulp molded packaging can be made to maintain its physical integrity and protect their content of common loads.

Many manufacturers choose to invest in custom pulp molds for a variety of reasons, one of which is saving money that is usually spent on damaged items. Custom packaging can be designed in such a way as to protect items better, which means that customers receive undamaged products more often. Also, such products can be designed to use less material, reducing the manufacturing costs associated with its production.

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