No harmful element & environmental friendly. Widely apply to
food&beverage cans, like milk poudre cans, tomato paste cans, cheese
cans, edible oil cans, pepper cans, sardine fish cans, tuna fish cans,
etc.
1. Technical standard: BS EN 10202, DIN EN 10203, GB/T2520 , JIS G3303
Food Can Tinplate,Foods Cans,Can Packing,Prime Tinplate Jiangsu Guolian New Material Co., Ltd. , https://www.cntinplate.com
1, VC copolymer
3. Thickness: 0.115 - 0.50 mm
4. Width: 600 - 1050 mm
5. Length: 600-1200mm
Tin Coating: ordinary 2.8 or 2.8g and 5.6g or 5.6g, we can produce according to customer's requests
Today, Jiuzhi Plastics Network tells you how to improve the heat resistance of PVC :
When the composition of the VC (vinyl chloride) and the other monomer copolymer resin contains a polar or large group component, the heat distortion temperature of the copolymer is correspondingly increased, and the heat resistance is better than that of the PVC to obtain a heat resistant product. The softening temperature of PVC is 78 ° C, and the softening temperatures of the copolymers of vinyl chloride-vinyl chloride, methyl chloride-methyl methacrylate, and vinyl chloride-acrylonitrile are 100-130, 85, and 140-150 °C, respectively.
2. PVC chlorination
Chlorinated polyvinyl chloride is obtained by chlorination of PVC resin, and its chlorine content is 62% to 68%. Chlorinated polyvinyl chloride can be used continuously at 100 ° C (20 ~ 35 ° C higher than PVC), the maximum operating temperature can reach 100 ~ 105 ° C. And chemical stability, flame retardancy, cold resistance are better than PVC. However, the anti-corrosion requirements of chlorination equipment are strict. The resin is not easy to process, and the impact toughness is poor, which restricts its application and development.
3, PVC cross-linking
Crosslinked PVC can be obtained by radiation crosslinking method and chemical crosslinking method. The crosslinked PVC products have higher mechanical strength, good dimensional stability, heat deformation resistance, wear resistance and chemical resistance than ordinary PVC products. Radiation cross-linked wires can be used continuously at 100~110 °C.
4, PVC blended with other polymers
The PVC is mixed with other polymers in a certain ratio, and the properties of the blend (fully compatible) are improved compared to PVC. Because the compatible two polymers are mixed, molecular-level intermixing can be achieved to form a single-phase structure, which complements and strengthens the properties of the blend, such as PVC/PS, PVC/PE, PVC/CPVC, and the like.
5, adding heat-resistant modifier
The heat-resistant modifier is a type of polymer which has been developed and produced to improve the heat resistance of PVC. (1) Polyglutarimide: obtained by reacting polymethyl methacrylate with CH3NH4. (2) SMA (styrene-maleic anhydride copolymer) is a better PVC heat-resistant modifier introduced by American manufacturers. (3) HT-510 (day) is an acrylic acid-based imino group copolymer, and (4) S700N is an α-methylstyrene-acrylonitrile copolymer. (5) ABS type heat-resistant modifier: A15, A50B, A10 (Japan Zhongyuan) (6) MBS heat-resistant modifier: Mitsubishi H602, 605, 632. (7) In addition, there are ELIX200, 300; GE Blendex 702, 703, 586, 975, etc.
6. Adding inorganic filler to PVC
After adding a certain amount of filler, it can improve the heat resistance of PVC. Commonly used fillers are: heavy calcium carbonate, light calcium carbonate, precipitated calcium carbonate, calcined pottery, barium sulfate, red mud, titanium powder and so on.
7. Add fiberglass to PVC
20%~30% glass fiber is added to PVC, and the heat resistance can be increased to above 100 °C without adding (or adding less) plasticizer. Especially for long fiber reinforced PVC, the heat distortion temperature increase is more obvious.