Industrial Packaging FAQ
Q1. What are the differences between Polyethylene (PE) and Polypropylene (PP)?
Monomer of polyethylene is ethylene and monomer of polypropylene is propylene. Polyethylene and Polypropylene are very similar as far as physical properties. However, Polyethylene is semi transparent in colour, light, and tough and better elongation compared to Polypropylene. Where else, Polypropylene is white in colour, stiffer and tensile strength is higher compared to polyethylene.
Q2. What are the differences between PP Laminated bag and PP Circular Inner Laminated bag?
PP Laminated bag is made by flat weaved fabric, where there is tubing join on the bag and it is laminated with PP Coating on outer surface of the bag. PP Circular Inner Laminated bag is made by circular weaved fabric, where there is no join on the bag and it is laminated with PE Liner on inner surface of the bag.
Q3. What is construction?
Constructions refer to the number of tapes per inch for Machine Direction (MD) and Cross Direction (CD).
Q4. What is denier?
Denier is a unit of measure for the linear mass density of fibers. It is defined as the mass in grams per 9,000meters.
Q5. What is a gusset?
It is a fabric running along the side of the bag that gives it depth that help the bag open out more and enable a greater volume of items to be put in.
Q6. What type of sewing thread you use?
PP spilt yarn for woven bag and Polyester yarn for paper bag.
Q7. What type of ink you use to print the bag?
Solvent ink is used for woven bags and water based ink is for paper bags.
Q8. What is Moisture Barrier Bag?
Moisture Barrier Bag is the most effective packaging solution in protecting sensitive products and eliminates any excess moisture vapours from penetrates inside the bag that will damage the products.
Q9. What is Water Vapor Transmission Rate (WVTR)?
WVTR is a measure of the passage of water vapour through a substance. The most common international unit for the WVTR is g/m2/day. Polyethylene has higher density that provides better moisture barrier and lower water vapour transmission rate than Polypropylene.
Q10. How much does a product bag hold?
This depends on the density of the product being packed however our bags are usually used to load between 20kg – 30kg for paper bags and 25 – 50kg for woven bags.
Q11. What is the shelf life for your paper bags?
If the bags are stored in proper condition, such as not expose to direct sunlight or heat source and in dry and cool environment, the bags can last for 1 – 1.5 years due to the polypropylene bags will degrade as a result of UV exposure.
Q12. Is your bag comply with Food & Safety Regulations?
Material safety data sheet or letter of conformity for heavy metal or U.S. food and drug administration (FDA) can be provided upon request.
Q13. What is your minimum quantity order to run production?
Our minimum quantity order is 10,000pcs for printed bag, where else, unprinted (plain) bag is 5,000pcs.
Q14. How many colours job you can print?
A: Printing for paper bag is at maximum 4 colours and woven bag is maximum 8 colours.
Q15. What is the advantage of Anti-slip?
Bags with Anti-slip will help to prevent from slippery during auto bagging / filling process and stacking process.