Which is better PVC or PVDC?
PVdC lamination over PVC sheet thickness is chosen for better sealability & high moisture barrier . Typical coating weights used include 40, 60, 90 and 120g/m2 over PVC laminate.2018-11-04
What is the difference between PVC and PVDC foil?
PVC stands for polyvinyl chloride while PVDC stands for polyvinylidene chloride. The key difference between PVC and PVDC is that PVC is made of chloroethene monomers, whereas PVDC material is made of vinylidene chloride.2020-09-08
Is PVDC a thermoplastic?
As a thermoplastic, PVDC is flexible, clear, and easily extruded. It clings well and resists oils and other chemicals, so it’s often used in pharmaceutical packaging.2019-10-23
Why PVDC is commonly used as copolymer?
Polyvinylidene chloride is an addition polymer of vinylidene chloride. It is heat-sealable and serves as an excellent barrier to oxygen, water vapor, odors and flavors (Kader et al. 1989). The PVDC copolymer can be heat-sealed and serves as an excellent barrier to gases.
Where is PVDC used?
PVDC (coated) film is mainly used in packaging of food, drugs, cosmetics, and other perishable or delicate products to extend shelf life. In comparison with many common films, PVDC coated films have superior gas and moisture barrier properties, and excellent heat sealability.
How is PVDC film made?
PVDC is made by the addition polymerisation of 1,1-dichloroethene (vinylidene chloride). The homopolymer is very difficult to process as it decomposes below its melting temperature.
Is PVDC thermoplastic?
Polyvinylidenechloride ( PVDC ) is a transparent and almost colourless thermoplastic noted for its extremely low permeability to gases.2003-05-26
What is PVDC coated film?
Poly-Vinylidene Chloride (PVDC) is a water-based coating often used to improve barriers and reduce permeability. It keeps food fresh, improves shelf life, and gives packaging an attractive high-gloss finish; all qualities that are behind the packaging industry’s preference for plastic.2019-10-23
Is PVDC a polymer?
Polyvinylidene chloride (PVDC) is an inert, semicrystalline polymer that forms very transparent films which exhibit low gas and vapor permeability. It is generally presented as a copolymer with vinyl chloride, acrylates or nitriles to adapt its properties to a variety of uses.
What is PVDC foil?
PVC(Polyvinyl chloride) and PVDC (polyvinyldine chloride)are used in pharmaceuticals as primary packaging materials, which protect pharmaceutical product against Oxygen and odour, moisture , water vapour transmission ,contamination and bacteria .
Is PVDC a PVC?
Summary PVC vs PVDC The term PVC stands for polyvinyl chloride while the term PVDC stands for polyvinylidene chloride. The key difference between PVC and PVDC is that the PVC material is made of chloroethene monomers, whereas PVDC material is made of vinylidene chloride.2020-09-08
Is PVDC amorphous?
PVDC is highly crystalline because of the symmetry of the chlorine pendant groups.
What is the meaning of PVDC?
polyvinylidene chloride (PVDC), a synthetic resin produced by the polymerization of vinylidene chloride. It is used principally in clear, flexible, and impermeable plastic food wrap.
What does PVDC stand for?
What is the thickness of PVC and PVDC?
Polyvinylidene chloride (PVDC)–coated PVC. 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.2012-03-21
How can we overcome lack of barrier property of PVC?
In order to overcome the lack of barrier properties of PVC film, it can be coated with PVDC or laminated to PCTFE or COC to increase the protective properties.2012-03-21
Is PVDC food Safe?
PVDC is one of the coated film market’s rising stars, offering efficient barriers that protect your products and add to their shelf life. It’s efficient, fuss free, and food-safe, adding to product presentation while improving the properties of the plastics and paper packaging it coats.2019-10-23
Is PVDC crystalline?
PVDC is highly crystalline because of the symmetry of the chlorine pendant groups. The ability to crystallize, in general, is favored by geometrical regularity of molecular structure and strong cohesive forces (5).
Is PVDC banned?
On the other hand, usage of PVdC-coated films is not banned or restricted in the North American market, with the sustainability concept being in the nascent stages. However, options are being considered.2016-12-01