CPP is a polypropylene (PP) film produced by a cast extrusion process in the plastics industry. This type of film is a non-oriented film unlike BOPP (bidirectional polypropylene) film. Strictly speaking, the CPP film has only a certain orientation in the machine direction (MD) direction, mainly due to the nature of the process. Excellent clarity and finish are formed on the film by rapid cooling on the chill roll.
(1) The main characteristics of CPP film include:
Compared with other films such as LLDPE, LDPE, HDPE, PET, PVC, etc., the cost is lower and the output is higher.
More stiff than PE film.
Excellent moisture and odor barrier properties.
Multi-functional, can be used as a base film for composite materials.
Metallization can be performed.
As a food and commodity packaging and packaging, it has excellent demonstration properties, so that the product is still clearly visible under the packaging.
Although some PP films are produced by a casting process for use in the sanitary field or as synthetic papers containing fillers and other additives, the term CPP film generally refers to high definition films suitable for applications such as lamination, metallization and packaging. .
(2) Current use and potential use
Current uses for CPP include: garment, knitwear and flower bags; pouches; outer packaging; documents and photo albums; food packaging; and metallized films for barrier packaging and decoration.
Potential uses include: blister packaging (instead of PVC); food packaging; candy packaging (twisted film); pharmaceutical packaging (infusion bag); replacing PVC in areas such as photo albums, folders and documents; synthetic paper; Report cover; business card holder; ring folder and standing bag composite.
CPP films are so attractive because of their low cost and price advantages over materials such as PET, LLDPE, and LDPE. Compared to LLDPE, a 5% to 10% spread plus a 2% density difference is attractive. Furthermore, due to the inherent rapid cooling properties of the cast film, excellent finish and transparency can be formed. This feature makes PP film the material of choice for packaging applications requiring high definition. It provides a transparent window that makes the contents clearly visible, making it ideal for the flexible packaging market. After corona treatment, it is easy to print using various processes. This special feature improves the final appearance of the film.
CPP is excellent in heat resistance. Since the PP softening point is about 140 ° C, such films can be used in the fields of hot filling, retort pouch, aseptic packaging and the like. Plus acid, sputum and grease resistance make it the material of choice for bread packaging or laminates. Its food contact safety, excellent performance, will not affect the flavor of the food, and can choose different grades of resin to obtain the desired characteristics.
Flange mainly used for connecting two pipes, used at pipe end; also connection between the two devices. Steel Flange materials can be divided into: low carbon steel flanges, mid-carbon steel flanges , high carbon steel flanges, alloy steel flanges. Steel flange has a high strength,good toughness,and high resistance to corrosion,high pressure and temperature, more excellent sealing performance, a wide usage range. Steel flange is widely used in petroleum, chemical, food, dairy, pharmaceutical, machinery manufacturing, sewage treatment, municipal water supply pipelines, military and medical industries
Flange containing integral flange (IF), threaded flange (Th), plate flange (PL), Weld Neck Flange (WN), slip on flange (SO), socket Weld Flange (SW), loose flange (PJ / SE), flat welding ring loose flange (PJ / RJ), Blind Flange (BL)
Product Steel Flange
Size:DN10-DN2500
Materials: 20#.A105.Q235A.12Cr1MoV.16MnR.15CrMo.18-8.321.304.304L.316.316L
Pressure: Pn2.5-Pn320,Class150-Class2500,5K-30K
Standard:ANSI,JIS,DIN,GOST.......
Crafts: Forging
Connection: Welding,Bolt.
Package: Wooden boxes,Wooden pallets,According to customer requirements.
Brand Name: HY
Place of Origin: China (Mainland)
Certification: ISO.UKS.SGS.BV
Application: Chemical, Water, Oil and gas, Electricity
Steel Flange
Steel Flange,Carbon Steel Flange,Standard Steel Flange,Stainless Steel Endplate Flange
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