1. The standard of PVC sheet used in medicine packaging is: YBB00212005 PVC solid medicinal hard sheet. National Pharmaceutical Packaging Container (Material) Standard. This standard applies to hard tablets made of polyvinyl chloride (PVC) resin as the main raw material for blister packaging of solid medicines (tablets, capsules, etc.).
With the improvement of our living standards, the use of soft furniture is becoming more and more widespread. For example, sofas, soft beds, soft chairs, and mattresses are products that are used in every home and office. Polyurethane foam is the main material of these furniture. Soft furniture has completely changed the traditional production process, and polyurethane foam is used in large quantities as an elastic material. The demand for polyurethane foam in the furniture industry is increasing year by year. As an important downstream industry of polyurethane soft foam, the furniture industry has continuously expanded the application range of polyurethane materials on furniture, improved the variety of furniture products, promoted a progress in furniture production, and then met the growing market demand. Many of the sofa cushions are made of polyurethane and are molded using foaming techniques using a mold. Water reacts with isocyanate to produce carbon dioxide and polyurea. Polyether reacts with isocyanate to produce polyurethane, and all these blends foam like noodles.
In the actual production, we use the mold to form the desired shape after the foam is initiated. This process is called reaction molding. After that, it is the post-processing process. This process is relatively simple. It is to put it in a free state to mature. Because foam is a viscoelastic material, its characteristics will change with time and speed, so it will generally be stationary for about 8 to 24 hours, and after its hardness is stabilized, it will be taken to the assembly plant. Wrapped, this is a cushion foam production process.
We need to make a cushion with beautiful appearance, comfortable body and reliable quality. We need to pay attention to many aspects in production. First, the fluidity is better, and the density distribution is "as far as possible". First consider the viscosity problem only the system viscosity is small, the initial fluidity will be good (main component of the average viscosity of 6000mPa.S or less, the combination of materials in 350mPa.S or less), followed by the system of potassium, sodium ions need to be controlled in a The lower limit (within 20 ppm) can be controlled to prevent the trimerization reaction from advancing, that is, the viscosity of the system will increase prematurely. If the fluidity is not good, the foaming material will go to the far end of the injection port and there will be drawing marks to make the cell structure football. This position must not resist low temperature shrinkage. At the same time is not conducive to complex mold casting. Therefore, viscosity measurement is performed at the beginning of the process, and the viscometer is generally used in the industry for monitoring.
Followed by fine cell, low thermal conductivity; resistance to low temperature anti-shrinkage performance is better; good adhesion; good security; to ensure the continuous stability of the foam production process and so on.
Shanghai Ruifeng Instrument Manufacturing Co., Ltd. is a company specializing in manufacturing, manufacturing and sales of products. Main products: viscometer, coring machine, constant temperature water tank, impermeability tester, extraction instrument, sand equivalent, hydraulic ejector, extension Instruments, asphalt mixers, ovens, cryogenic water tanks, kinematic viscometers, road viscometers, and Cleveland flash point meters. The company is located in what is known as an international metropolis - Shanghai, Shanghai is China's economy, finance, trade and The shipping center, with China’s largest industrial base, is taking advantage of Shanghai’s geographical advantages, bringing together a large number of high-tech talents, strong technical force, superb manufacturing technology, and the spirit and advantages of continuous pioneering and innovation. It is stepping forward step by step. A little bit of growth. At the same time, it has established close cooperative partnership with many universities and scientific research institutions such as Tongji University, Guangzhou University, Zhejiang University of Technology, and South China University of Technology. It also relies on universities and scientific research institutions to cultivate high-quality technical support and service professionals. , The establishment of professional and technical personnel, research and development of reliable, high-quality products and equipment with the latest domestic instruments and meters to ensure that the company can provide customers with high-quality, high-level professional services. The company has always been focused on product quality, product cost performance, customer requirements, and product innovation, practicality, and convenience. The excellent management concept is well-known throughout the industry. At the same time, good quality, low price, good service and enthusiastic working attitude have won the favor and trust of the new and old customers.
2. Related standards:
GB/T 2918-1998 Standard environment for condition adjustment and testing of plastic samples
GB/T1037-1988 Plastic film transmittance and haze test method
GB/T 2410-1980 Transparent plastic light transmittance and haze test method
GB/T 6672-2001 Plastic film and sheet thickness determination mechanical measurement method
GB/T 6673-2001 Determination of the length and width of plastic films and sheets
GB/T 4615-1984 Determination of residual vinyl chloride monomer content in polyvinyl chloride resin
GB/T 15047-1994 Plastic torsional rigidity test method
TEST ITEM AND CONCLUSION
Item
Specification
Test Result
Conclusion
Appearance
Accord to standard
Yes
Qualified
Thickness
±0.02mm
0.30mm
Qualified
Density
1.35~1.45g/m³
1.36
Qualified
Water Vapor Transmission
≤20.0g/(㎡•24h•0.1mm)
5.9
Qualified
Oxygen Transmission
≤30cm³(㎡•24h•0.1Mpa)
16.49
Qualified
Tensile Strength
TD:≥44Mpa
52.1
Qualified
MD:≥44Mpa
54.6
Qualified
falling Ball Impact Brittle Rate
TD:≤40%
0
Qualified
TD:≤40&
0
Qualified
Heating Shrinking rate
≤±10%
TD:-3% MD:4%
Qualified
Heating Sealing Strength
≥7.0N/15mm
8.9
Qualified
Vinyl Chloride Monomer
≤1mg/kg
<0.1
Qualified
Test
Drgree of Clear
clear
clear
Qualified
Test of Oxidation
Difference of Titer≤1.5ml
0.98
Qualified
Heavy Metal
≤0.0001%
≤0.0001%
Qualified
Non-Volatile
Water
≤30mg/100ml
6.4
Qualified
65%Ethanol
≤30mg/100ml
7.6
Qualified
n-Hexane
≤30mg/100ml
8.6
Qualified
Barium
Ought to clear
YES
Qualified
Micro-organism
Bacterium
≤1000/100m³
39
Qualified
Mildewµzyme
≤1000/100m³
<10
Qualified
Coliform
Non-permit
Not be discovered
Qualified
Storage Insturction
Store for 180 days at normal temperature and keep dry
√ Excellent clarity & transparency
√ Excellent thickness control
√ Excellent formability (normal & deep-draw packages)
√ Superior sealing
√ Excellent impact strength
Blister Pvc,Pharma Blister Pvc,Pharma Packaging Pvc,Pvc Blister Packaging
Shandong Top Leader Plastic Packing CO., LTD , https://www.sdzlplastic.com