Sumino CPP/CPE casting film machine

Sumino CPP/CPE casting film machine is now consulted by lots of clients and today,let me introduce what is the CPP film,how it makes by our casting film machine.

1.The usage and development of CPP film

CPP film is a polypropylene (PP) film produced by a cast extrusion process in the plastics industry. This type of film is different from BOPP (Bidirectional Polypropylene) film and is a non-oriented film. CPP film has the characteristics of good transparency, high gloss, good stiffness, good moisture resistance, excellent heat resistance, and easy heat sealing. After printing and bagging, CPP film is widely used in clothing, knitwear and flower packaging bags, document and photo album films, food packaging and metallized films suitable for barrier packaging and decoration. In addition, the demand for food packaging, candy packaging (twisted conjunctiva), pharmaceutical packaging (infusion bag), self-adhesive tape, business card holder, ring file folder, etc. is increasing day by day.

CPP film has excellent heat resistance. Since the softening point of PP is about 140°C, this type of film is used in hot filling, retort bags, aseptic packaging and other fields. In addition, it has excellent acid, alkali and grease resistance, making it a material in the fields of bread product packaging or laminate materials. It is safe in contact with food, has excellent performance, does not affect the flavor of the food inside, and can choose different grades of resin to obtain the required characteristics.

The production process of cpp film:

Now equipped with a more advanced CPP film production line, the ingredients no longer need to be stirred and mixed, but various raw materials are automatically sucked by the vacuum pump, and the screw is extruded and mixed, which saves labor costs; the feed is weighed and the number of rotations of the extruder is controlled. , Make the extrusion volume stable; set the processing temperature of each section reasonably according to the characteristics of different raw materials and extruders; the flow divider (FEEDBLOCK) is the key to the production of multi-layer CPP film; the casting roll is equipped with air knife or soft The wind box makes the film stick to the roll better. The die is equipped with a vacuum box to form a certain degree of vacuum when the film flows to the casting roll. The cooling effect of the film is good when the roll is applied, and the transparency is high; with the automatic adjustment of the die, the film can be effectively controlled The thickness uniformity of the CPP film; corona treatment makes the CPP film have printability, aluminum plating, and composite properties. Usually one-stop processing is enough for one side (there are also double-sided processing). For single-sided CPP film Particular attention should be paid to control not to cause back treatment; Neck-in is generated due to casting before winding, trimming is necessary, and the edge material should be recycled online, which can be directly mixed with new material for recycling or extrusion The machine is forced to feed the core layer for mixing and recycling; control the winding tension, usually use gap winding to make the CPP film roll with a certain amount of air, and shrink and set the shape during aging; then cut and inspect the packaged product.

2.Advantages of CPE cast film:

CPE film has good heat-seal performance due to its low degree of orientation;

CPE film has good flexibility and good cold resistance, especially suitable for frozen packaging;

CPE film has high transparency and low haze,

The main purpose of the product:

1. The CPE film is printed and bagged, and is suitable for: clothing, knitwear and flower packaging bags, document and photo album films, and food packaging;

2. Other uses: food packaging, candy packaging (twisted conjunctiva), medicine packaging (infusion bag), replacing PVC, synthetic paper, self-adhesive tape, business card holder and standing bag composite materials in photo albums, folders and documents .

Company Profile

Nanjing Sumino Precision Machinery Co., Ltd. is a high-tech enterprise integrating scientific research, production and sales. It has always adhered to the business philosophy of integrity, equality, and customer benefits. In order to better improve the quality of equipment, it has entered a more professional and standardized Production track. We have established independent research and development technologies for seven categories of equipment including plastic sheet material, casting, bi-stretching, non-woven non-woven meltblown cloth, laminating film composite, recycled granulation environmental protection recycling system and coating machine manufacturing system. The center and production department provide a full set of professional technical solutions to meet the special needs of each customer. Among them, the biaxially oriented film manufacturing system includes: BOPP biaxially oriented film manufacturing system, PVC biaxially oriented shrink film production line, PET biaxially oriented film production line, BOPA biaxially oriented film production line, BOPA biaxially oriented film production line, etc.
Company Address: No. 11, Kaifeng Road, Moling Street, Jiangning District, Nanjing City, Jiangsu Province

Sue

International Business Development Department Manager

Nanjing Sumino Precision Machinery Co.,Ltd

Add: Kaituo Road No.11, Jiangning Distract, Nanjing, China.
Tel: +86 025-51839686
Fax: +86 025-51839687
Mob/Wechat/Whatsapp: +86 177 1241 3069

Email: suqian@susumino.com

Web: sumino.en.alibaba.com / www.susumino.com/ www.njsumino.com