Packaging and industrial materials often have to serve two purposes – protect the product during handling, while also reducing waste after use. Water soluble film can be a solution in cases where the material needs to be dissolved under specific conditions.

Finding a water soluble film manufacturer is more than a matter of comparing prices. Factors such as film strength, dissolving characteristics, storage requirements, thickness and production support can have an impact on the outcome. A film that is suitable for use with one product may not necessarily be appropriate for another. Understanding the considerations can help avoid poor results, material waste, and production delays.

Where Water-Soluble Film Excels … and When It Can Fail

Water-soluble film is intended to dissolve under specific water conditions, and its ability to do so can vary based on the temperature of water that it is exposed to, film variations, and storage conditions prior to use.

A major advantage is the ability to provide precise dosing of a product. Pre-dosed items can be placed in the film to provide a uniform portion of the contents without direct human interaction. This can be a significant benefit with products such as detergents, cleaning agents, agricultural chemicals and some industrial chemicals.

In addition, the film can reduce the need to remove and dispose of separate wrapping, making certain processes easier and reducing potential sources of waste in appropriate applications.

• However, there are also limitations.
• Humidity and accidental exposure to water prior to use can negatively impact the integrity of the film.
• Proper storage conditions must be followed.
• Not all material contents are compatible with the film.

The dissolving characteristics can vary significantly based on the conditions of the water that the film is exposed to.

For example, a film that is formulated to quickly dissolve in hot water would not be appropriate for use in a process that requires cold water.

Film Quality Can be More Important Than Looks

While an attractive, uniform film is an appealing prospect, buyers should remember that appearance can be misleading. In particular, buyers should identify how a given material will function through all stages of use – welding, filling, storage, shipping, and dissolution.

A reputable water soluble film manufacturer can identify important considerations for material characteristics, and can explain them in terms that are relevant to the buyer’s needs. Buyers should ask about differences in film thickness, dissolution instructions, film strength, welding specifications, and storage requirements.

Consistency in material specifications can also be a critical consideration. If one roll of film behaves differently from another, it can result in additional production delays in adjusting packaging machinery.

Variations in film thickness also affect the uniformity of the weld or dissolution

Material considerations found on websites such as www.watersolubleplastics.com can help the buyer understand the variety of water-soluble materials available before discussing potential suppliers or applications.

Questions to Ask Your Water-Soluble Film Supplier

When considering a water-soluble film supplier, buyers should be specific about their intended application, rather than asking for general recommendations. Buyers should describe the product that they intend to package, and ask how the film should be welded and stored, what storage time frames are appropriate, and what conditions should be anticipated during dissolution. Whenever possible, buyers should request a sample batch and evaluate the film in the same production environment where the material will be used. This can ensure that material characteristics are consistent with the claims made by the supplier.

Specific areas of concern include:

• What water temperature should the film be exposed to in order to promote proper dissolution?
• What are the storage requirements for the film?
• What thickness options are available that are compatible with the buyer’s equipment?
• Is the film appropriate for direct contact with the contents that the buyer intends to use?
• Can the supplier maintain consistent specifications across multiple production runs?
• Are complete handling and processing instructions available for the material?

Buyers should avoid choosing the cheapest film option that they can find, since poor material characteristics can lead to production delays, compromised product integrity, wasted materials, and lost production time.

The buyer should also identify whether the supplier has the capacity to fulfill the order. Some suppliers are better equipped to handle large production runs, while others may have limited capabilities. Asking about minimum order sizes can help eliminate suppliers ahead of time that may not be able to accommodate the buyer’s needs.

Characteristics of a Reputable Water-Soluble Film Manufacturer

A competent supplier will ask questions about the buyer’s intended application before recommending potential products.

Buyers should exercise caution if they are presented a single film option that the supplier claims is appropriate for all applications, without asking questions about the conditions of moisture, temperature, and equipment. Another red flag is a supplier who is unable to accurately answer questions about the strengths and limitations of a particular material.

A buyer should look at more than just price differences between potential suppliers.

When comparing a water soluble film manufacturer against other suppliers, buyers should look at the compatibility of the proposed material with their intended application, the level of quality control implemented, and the support offered in testing and specification selection. These factors can be more important than slight differences in the price per unit between suppliers.

Key Takeaways

• Match film characteristics to the water temperature and conditions that the film will be exposed to during use.
• Take storage requirements and humidity into account prior to placing bulk orders.
• Request a sample of the material and test it in the same production process where the film will be used.
• Ask about the film thickness, strength, compatibility, and consistency across production runs.
• Compare the production reliability and support from multiple suppliers, rather than relying on price differences alone.

Make Selections Based on Application Requirements

Water-soluble film can offer significant advantages in certain packaging and industrial applications, but it must be matched to the requirements of the intended use. Buyers should begin the evaluation process by identifying how the film will be filled, stored, and handled before being exposed to conditions that will cause it to dissolve. Buyers should compare potential suppliers based on their ability to address specific conditions, and should review samples in the same production conditions that they will be used. Careful evaluation ahead of large production orders can help to ensure that the selected material has been tested and proven to be compatible with the production process, while also providing reliable characteristics once the film is exposed to water.