A Kuraray Company A Kuraray Company

Frequently Asked Questions

 

General

Q. What is the difference between water-soluble and dispersible?

Q. What are the main ingredients in water-soluble film?

Q. Do PVOH cold water-soluble films dissolve quicker in warm/hot water?

Q. Are any special storage conditions required for MonoSol films?

Q. What is the shelf life for these films?

Q. Do MonoSol’s water-soluble films harm the environment?

 

Specialty

Q. Can I have a film that does not react up to a given temperature, but will dissolve as soon as it goes above that temperature?

Q. What's the difference between blown and cast films?

Q. Is it important to conduct compatibility tests?

Q. What is available water?

Q. Can there be a zip lock on the water-soluble bags and sachets?

Q. How much weight can a water-soluble bag hold?

Q. Can the film be printed?

Q. What machinery can run water-soluble films?

Q. Can I heat seal?

Q. What is the density of water-soluble film?

Q. Could you recommend any contract packagers?

 

Healthcare

Q. Why do the fully soluble bags appear to dissolve or fall apart when very wet linen is placed in them?

Q. What's the difference between Aquafilm™ and Aquafilm™ Plus fully soluble laundry bags?

Q. Why is it important to use the tie provided and avoid knotting the laundry bag?

Q. Can detergents cause problems?

Q. What is the difference between a “fully soluble” and a “soluble seam” laundry bag?

Q. How should I store the bags?

 

Embroidery

Q. Why should I use a stabilizer?

Q. How should I remove Badgemaster from my project?

Q. Which embroidery film product is best for 3D crafts and projects?

Q. How should I store Badgemaster?

 


 

General

 

Q. What is the difference between water-soluble and dispersible?

A. Water-soluble film completely dissolves, whereas dispersible film just breaks down into minute particles.

 

Q. What are the main ingredients in water-soluble film?

A. PVOH (Poly Vinyl Alcohol) is the main ingredient in packaging grades of water-soluble film.

 

Q. Do PVOH Cold Water-soluble films dissolve quicker in warm/hot water?

A. Yes, the energy provided by water is linked to the water temperature.  The higher the water temperature is, the quicker the dissolution process happens.

 

Q. Are any special storage conditions required for MonoSol films?

A. When storing, avoid extreme humidity and temperature. Cold storage or very low humidity, for example, can cause the film to become brittle. Laundry bags, under normal conditions, should be kept in their re-sealable bag. Care should be taken at all times not to allow the film to become wet. Ideal storage conditions are 10-20? C with 30-60% relative humidity.

 

Q. What is the shelf life for these films?

A. Shelf life can vary depending on the film grade.  Please enquire about the specific film/application that you are interested in.

 

Q. Do MonoSol’s water-soluble films harm the environment?

A. No.  When dissolved and exposed to normal water treatment, bacteria will break down the film into harmless components.

 

Back to Top

 


 

Specialty

 

Q. Can I have a film that does not react up to a given temperature, but will dissolve as soon as it goes above that temperature?

A. No.   PVOH’s reaction to water is driven by water temperature and depends on the type of polymer.   The film will only dissolve when it rises above a given temperature and will not react before the water reaches this temperature. This is the reason the water solubility characteristics are defined as “dissolution time,” a given temperature and a given agitation.

 

Q. What's the difference between blown and cast films?

A. Blown films are produced by direct extrusion of ingredients through an annular die.  This forms a vertical inflated bubble that is then collapsed and wound up as a reel of film.  This film is either two layers or split into two single wound reels.  Cast films are produced by creating a viscous, aqueous solution of ingredients.  They are then cast via a slot die onto either a continuous belt or a drum.  This drum is where the water is driven off by hot air, leaving a film that can be stripped off and wound up.

 

Q. Is it important to conduct compatibility tests?

A. Very important. These tests are conducted both for new products and for any ingredients that are changed in a product subsequent to compatibility testing.

 

Q. What is available water?

A. Water that is available or free to soluble the film.

 

Q. Can there be a zip lock on the water-soluble bags and sachets?

A. Not currently.   This may not be practical for applications that require fast dissolution, as the zip would dissolve very slowly compared to the thin film.

 

Q. How much weight can a water-soluble bag hold?

A. Laundry bags are expected to contain a maximum of 12kg (26 lbs) of linen when loaded into a supporting outer transport bag.  Chemical packages are typically up to 10kg, though there is not theoretical reason for higher loadings given correct filling and handling.

 

Q. Can the film be printed?

A. Yes

 

Q. What machinery can run water-soluble films?

A. Horizontal flow wrapping machines, thermoforming machines and vacuum forming machines (horizontal and rotary) may run this film. Vertical Form Fill, Seal machines (trans wrap type), some types of stick pack machines, some types of 3 side and 4 side seal Vertical Form Fill and Seal machines, pleat wrapping and cut and wrap block wrapping machines are all able to run water-soluble films.

 

Q. Can I heat seal?

A. Yes.  It also water seals.

 

Q. What is the density of water-soluble film?

A. 1.2 to 1.3 grams per ml

 

Q. Could you recommend any contract packagers?

A. Yes.  We can suggest contract packers experienced in handling our water-soluble films according to product types, pack types and geographical locations.

 

Back to Top

 


 

Healthcare

 

Q. Why do the fully soluble bags appear to dissolve or fall apart when very linen is placed in them? 

A. This can happen if overly wet linen is placed in the bag without any other form of protection. We suggest that wet linen is wrapped in dry and absorbent textiles before placing them in the bag. As an alternative we offer Aquafilm® Plus, which has a cold water soluble resistance. 
 

Q. What's the difference between Aquafilm™ and Aquafilm™ Plus fully soluble laundry bags? 

A. Aquafilm™ Plus laundry bags are heavier gauge bags (22mu) and have total resistance to cold water making them more suitable for areas such as maternity departments, etc., that generate wetter linen.

 

Q. Why is it important to use the tie provided and avoid tying a knot the laundry bag?

A. Some staff may be tempted to close the bag by tying a knot in the top of the bag. This can cause problems because the knot is a solid lump of material and water cannot reach the center of the knot to dissolve it. The remedy for this would be to correctly train the staff to use the tie tape provided, usually in conjunction with the Infection Control Nurse or Hygienist.

 

Q. Can detergents cause problems?
A. Only when added too early to the wash cycle or when added in excessive quantity, which causes increased alkalinity levels in the wash ph balance. 

 

Q. What is the difference between a “fully soluble” and a “soluble seam” laundry bag? 

A. A fully soluble laundry bag dissolves completely in the wash cycle. A soluble seam bag opens during the wash cycle and the PolyBag has to be removed at the end of the cycle.

 

Q. How should I store the bags? 

A. All bags should be stored at temperatures between 7 degrees centigrade and 30 degrees centigrade at relative humidity 20 to 70%. Also, fully soluble laundry bags should be stored in the pouch provided, for 2 reasons:

(1) Traceability.

(2) To prevent moisture from being absorbed from the atmosphere; this allows ease of opening.

 

Back to Top

 


 

Embroidery

 

Q. Why should I use a stabilizer?
A. Stabilizers keep the fabric from moving during stitching and add fiber density for all the stitches in the design to hold.  The additional fiber density allows more intricate designs to be achieved and significantly improves the quality.

 

Q. How should I remove Badgemaster from my project?  

A. Hold the excess Badgemaster firmly and tear it away from the garment.  Pick the remaining film from the design.  Small pieces can be sprayed with a small amount of water and blotted out of the garment with a damp cloth. 

 

Q. Which embroidery film product is best for 3D crafts and projects?
A. Badgemaster is a water-soluble backing.  When used for embroidery, a fabric backing is not necessary.  Embroidery can be done directly into the fabric.  Badgemaster can be used to make intricate lace, ornamental projects & 3D crafts.

 

Q. How should I store Badgemaster?

A. Store in the original packaging or a clearly marked re-sealable bag.  This prevents humidity absorption resulting in a “tacky” feel of the product.  It also prevents the film from drying out and becoming brittle, depending upon the environment.

 

Back to Top