Table of Contents
- 1 What is the difference between PVC and PVDC foil?
- 2 What is PVDC plastic?
- 3 What is PVDC pipe?
- 4 Why is PVDC bad?
- 5 How can you tell PVC and PVDC?
- 6 Is PVDC bad for the environment?
- 7 What is PVC PE PVDC?
- 8 Is PVDC a thermoplastic?
- 9 What is the difference between PVDC and coated PVC film?
- 10 What does PVDC stand for?
What is the difference between PVC and PVDC foil?
Multi-layer blister films based on PVC are often used for pharmaceutical blister packaging, whereby the PVC serves as the thermoformable backbone of the structure. Polyvinylidene chloride (PVDC) can be coated onto a PVC film to obtain very high moisture and oxygen barrier properties depending on the coating weight.
What is PVDC plastic?
Polyvinylidene chloride or PVDC is a clear and flexible synthetic thermoplastic produced by the polymerization of vinylindene chloride. It is optically clear with a high degree of gloss and has outstanding oxygen and moisture barrier properties comparable to metallized films. PVDC can be easily extruded and laminated.
What is PVDC pipe?
PVDC is polyvinylidene chloride, generally known as Saran (used in Saran wrap). I have never seen pipe made from this material.
Why is PVC used on blister pack?
The main advantage of using PVC is the low cost. PVC sheets of 0.25 to 0.3mm are used for making blister packs. #PVDC or polyvinylidene chloride is used along with PVC sheets to improve the barrier properties of the packaging. This provides excellent protection from oxygen and moisture.
How do I know if I have PVDC?
We can differentiate the PVC & PVC/PVdC laminates by morpholine test as PVdC gives us yellowish to brownish after few seconds of application of Morpholine. However PVC does not give any colour changes.
Why is PVDC bad?
PVDC is considered a contaminant to well-established recycling streams (such as PE) because it degrades at low temperatures, rendering large portions of the mainstream polymer unusable. PVDC causes corrosion and damage to the reprocessing equipment due to its chlorine content.
How can you tell PVC and PVDC?
Is PVDC bad for the environment?
PVDC is considered a contaminant to well-established recycling streams (such as PE) because it degrades at low temperatures, rendering large portions of the mainstream polymer unusable. Even relatively small quantities of PVDC are reported to have detrimental impact on the quality of the recyclate.
What is orange pipe used for?
Color Code for Marking Underground Utility Lines
| Red | Electric power lines, cables, conduit, and lighting cables |
|---|---|
| Orange | Telecommunication, alarm or signal lines, cables, or conduit |
| Yellow | Natural gas, oil, steam, petroleum, or other gaseous or flammable material |
| Green | Sewers and drain lines |
| Blue | Drinking water |
What is orange water pipe?
If you notice a stream of red, brown or orange water coming from any of your water faucets, this usually indicates the presence of iron or manganese, meaning your old cast iron pipes are rusted. While rusty water isn’t detrimental to your health, it stains your sink and laundry.
What is PVC PE PVDC?
Thermoformable triplex PVC/PE/PVDC films for blisters. Triplex film is PVC, laminated with PE layer with PVDC coating. PVDC layer gives the structure barrier properties against oxygen and water vapor, while PVC/PE serve for better forming and mechanical stability of the cavities.
Is PVDC a thermoplastic?
Polyvinylidenechloride ( PVDC ) is a transparent and almost colourless thermoplastic noted for its extremely low permeability to gases.
What is the difference between PVDC and coated PVC film?
Coated PVC films have a thickness of 8–10 mil; the thickness of the PVDC coat amounts to 1–2 mil. The coating is applied on one side and usually faces the product and the lidding material. PVDC provide excellent barrier to both oxygen and water vapor while most other barrier polymer offer just one or the other.
What is polyvinylidene chloride PVDC?
Polyvinylidene chloride (PVDC)–coated PVC. PVDC plays a critical role in blister packaging as laminations or coatings on PVC. PVDC can reduce the gas and moisture permeability of PVC blister packages by a factor of 5–10.
What are the benefits of PVDC over PVC as primary packaging material?
Benefits of PVDC over PVC as a primary packaging material. PVDC can reduce the gas and moisture permeability of PVC blister packages by a factor of 5–10. Coated PVC films have a thickness of 8–10 mil; the thickness of the PVDC coat amounts to 1–2 mil. The coating is applied on one side and usually faces the product and the lidding material.
What does PVDC stand for?
The term PVDC stands for polyvinylidene chloride. It is a homopolymer of vinylidene chloride. This material is most common in the production of Saran wrap, a plastic wood wrap that was introduced recently (at around 2004). However, this formula was changed due to some environmental concerns due to its high chlorine content.