Several structural characteristics and uses of multilayer co-extruded composite film

Multi-layer co-extrusion compounding is carried out by using several extruders of the same kind or different kinds of resin simultaneously into a composite die. Each layer of resin is integrated into the die or foreign exchange, and after extrusion and compounding, it becomes composite by cooling and setting. film.

The main features of coextrusion compounding are: one-time extrusion of multilayer film, simple process, energy saving, high production efficiency and low cost; composite film is soft and comfortable to handle; no adhesive is needed between layers Therefore, there is no problem of residual solvent, and the film has no odor and is suitable for packaging of foods and medical devices. The main disadvantage is that the waste is difficult to recycle.

The common coextruded composite film has a layer number of 2-7 layers. The structural characteristics and uses are as follows:


structure	characteristic	The main purpose
LDPE/LDPE	Microporous seal	Fresh milk, parcels, general packaging
LDPE/EVA	Easy to heat seal, no cause	Heavy-duty packaging, medical supplies packaging
HDPE/EVA	Aseptic processing, easy heat sealing	Serum plasma, bread, food packaging
HDPE/LDPE	high strength	Food, food, concentrated juice, fertilizer and other packaging
LDPE/HDPE/LDPE	Good sealing on both sides, no curling, high strength	Food, postal parcels, Fertilizer, chemical raw materials, food, sugar fish meal, etc.
EVA/PP/EVA	Ibid.	Ibid.
EVA/HDPE/EVA	Ibid.	Ibid.
LDPE / binder resin / PA ₆	Water blocking, gas barrier, high strength	Sausage, dairy products, frozen meat products, medical packaging, ordnance packaging , food, etc.
EVA / binder resin / PA ₆	Ibid.	Ibid.
LDPE / binder resin / PA ₆ / binder resin / LDPE	Balanced structure, no curling, good barrier properties, good sealing strength	Ibid.
LDPE / binder resin / PA ₆ / binder resin / LLDPE (HDPE)	Good barrier property, high sealing strength and good mechanical properties	Ibid.

As zirconia has a superior insulation, wear resistant with low friction cofficient, anti-corrision, resistant high temperature, resistant extrem cold and very low thermal conductitivity, it's a very ideal material for shaft and bushing.

We can provide vairtyof standard zirconia ceramic shaft, also support R&D program. Many different precision grade ceramic shaft can be achieved through high precision fine grinding and machining which is to be 0.005mm.

Zirconia Ceramic Component

Zirconia Shaft,High Precision Zirconia Shaft,Industrial Zirconia Ceramic Shaft,Zirconia Ceramic Shafts

Jinghui Industry Ltd. , https://www.ceramictek.com