PVC/PVDC composite sheet

In order to provide greater water and oxygen barrier protection for the pharmaceutical market, many enhanced barrier materials can be added to PVC, PET or other polymer materials, such as PVDC (vinylidene chloride-based copolymer) coating, which can provide high water vapor barrier performance and high oxygen barrier performance.

PVC/PVDC composite rigid film, PVC/PE/PVDC composite rigid film is made of medicinal PVC rigid film and PVC/PE composite rigid film as the substrate, and then coated with high barrier material PVDC. Compared with PVC of the same thickness, its oxygen barrier performance is improved by 10 times, and its water vapor barrier performance is improved by 5~10 times. It is often used as a blister packaging for pharmaceuticals, which can effectively prevent pharmaceuticals from deliquescing, mildewing and oxidative failure, and extend the shelf life of pharmaceuticals.

Medicinal PVC/PVDC rigid film, PVC/PE/PVDC high barrier composite rigid film, is a packaging material with high barrier performance, easy to shape, and various colors. The barrier effect can be selected by adjusting the coating amount of PVDC. Typically in the market 40g, 60g and 90g/m² coating weights provide water vapor transmission rates (WVTR) of 0.6g/m² to 0.2g/m².

PVC/PVDC rigid film

Quality requirements:

1. Appearance quality requirements: transparent and consistent color, no cracks, scars, bumps, wrinkles, perforations, precipitation, missing edges, and oil stains are allowed. The roll is flat, the edges are neatly cut, and the tightness is consistent;

2. Physical performance indicators: water vapor permeability <0.1g, oxygen permeability <1.6;

3. The gram weight of the PVDC coating is accurate, with a deviation of <1g;

4. After coating and curing, the material has normal flexibility and tensile and rupture strength

5. Chemical performance indicators: vinyl chloride monomer content <1/1,000,000, easily oxidizable <1ml;

6. Microbiological indicators: bacterial count <100, toxins <30, Escherichia coli shall not be detected, and there is no abnormal toxicity.

PVC/PVDC composite sheet Advantage:

1. The product has uniform thickness, clear and transparent;

2. Few crystal points and no impurities;

3. The coating is uniform, without obvious bonding or cast lines;

4. Impact resistance, corrosion resistance, aging resistance, UV resistance, and radiation resistance;

5. It has similar flexibility and rigidity to PVC rigid film, and the use parameters are consistent with PVC rigid film;

6. Easy to form and heat-seal quickly;

7. Excellent barrier effect on oxygen and water vapor;

8. Low content of vinyl chloride monomer, low easy oxidation index, safe and non-toxic.

PVC/PVDC composite sheet Specification:

Structure	PVC/PVDC
Thickness	0.20-0.60mm
Width	80-1000mm
Roll diameter	275-500mm
Length	200m/roll (thickness 250mic)
Density	1.37g/cm3
PVDC coating amount	40g/60g/90g/120g (customizable for special coating requirements.)
Advantages	easy to form, fast heat sealing, high barrier properties, heat sealability, chemical resistance, easy processing;
Use	Mainly used for blister packaging of solid drugs (tablets, capsules, etc.).

Performance indicators:

Item\Specification\Name	PVC rigid film	PVC/PVDC composite sheet	PVC/PE/PVDC composite sheet
Item\Specification\Name	0.10-0.50mm	40g/m2,60g/m2,90g/m2	≥90g/m2
Tensile strength Mpa	≥44.1	≥45	≥90g/m2
Ball impact crushing rate %	≤40	≤40	≤40
Heating shrinkage %	≤\|7.0\|	≤\|7.0\|	≤\|7.0\|
Water vapor permeability g/m2.24h	≤ 2.5	≤ 0.8,≤ 0.6,≤ 0.4	≤ 0.4
Oxygen permeability cm3/m2.Pa.24h	-	≤ 0.8,≤ 0.6,≤ 0.4	≤1.0×10-5
Use	Regular packaging requirements	Pharmaceutical packaging with moisture-proof and oxidation-resistant requirements	Pharmaceutical packaging with excellent moisture and oxidation resistance requirements

PVC/PVDC composite sheet

Application of PVC/PVDC composite sheet:

PVC/PVDC composite rigid film is mainly used in pharmaceutical blister packaging and is a high barrier pharmaceutical packaging material. It can also be used in packaging of food, beverages, cigarettes, and moisture-proof packaging in the chemical, electronic, and military industries. In the pharmaceutical field, pharmaceutical PVC/PVDC composite rigid film mainly replaces the commonly used PVC pharmaceutical blister packaging and is used for the packaging of tablets, capsules, and other medicines.