PE Breathable Film Production Line

The production line use PE air-permeable plastic granuels as raw material, and uses extrusion casting method to melt-extrude the PE-modified air-permeable plastic granuels containing inorganic filler through a flat die and the roller is stretched at a high rate to produce a sub-nanometer micro Porous membrane.

  • Port: Shanghai, China
  • International Commercial Terms(Incoterms): FOB, CFR, CIF, EXW
  • Terms of Payment: LC, T/T
  • Certification: CE, ISO, UL, QS, GMP
  • Warranty: 1 Year
  • Average Lead Time: Peak season lead time: 3-6 months, Off season lead time: 1-3 months

Since the fight against the pneumonia epidemic caused by the novel coronavirus, as companies gradually resume work, the shortage of medical protective products has eased, but there is still a gap. In particular, as a “teater” protective suit for medical staff, it is generally replaced every 4 hours, which is in great demand.

figure disposable protective clothing
figure disposable protective clothing

Disposable medical protective clothing materials need to meet the requirements of “three resistance and one resistance” (that is, water repellent, blood repellent, alcohol repellent and antistatic) requirements of micro-nano grade materials. This composite material can be combined by different materials, such as polyethylene/polypropylene spunbonded nonwoven fabric, combined with breathable microporous film or other nonwoven fabric, or spunlace nonwoven fabric combined with breathable microporous film, or Wooden paddle composite spunlace nonwoven fabric. In addition, some membranes made of PTFE can be used for high-end protective clothing fabrics. In the composite of these materials, the breathable microporous film is particularly important.

The so-called breathable film is a kind of functional inorganic product that is uniformly mixed into the polyolefin raw material, so that the product has pores due to high stretching during the film formation process, so as to have the function of breathability and moisture transmission; the function of the breathable film In short: Waterproof and breathable (moisture), take the most commonly used PE as a carrier as an example.

 

  1. The principle of breathability

The principle is very simple: inorganic matter + stretching = micropores. In fact, the operation is very particular. Only micropores with proper size and uniform distribution are effective. As shown in Figure 1:

effective pore size of breathable membrane
effective pore size of breathable membrane

As shown in Figures 2 and 3 below, insufficient stretching and too small pore size, insufficient stretching and no pore size, poor stretching and insufficient sized micropores can only be waste products.

comparison of pore size of breathable membrane
comparison of pore size of breathable membrane
  1. Basic film forming principle of breathable film

The film forming principle of breathable film: PE+CaCO3 (masterbatch) — film formation — stretching — breathable film

PE breathable film is blended with LDPE/LLDPE polyethylene resin carrier by adding about 50% of special calcium carbonate, and then oriented and stretched to a certain ratio after being extruded into a film. Since polyethylene resin is a thermoplastic plastic material, it can be stretched and crystallized under certain conditions. During stretching, the interface between the polymer and the calcium carbonate particles will be peeled off, and the interconnected serpentine pores are formed around the calcium carbonate particles. Or channels, it is these pores and channels that give the film a breathable (wet) function, thereby communicating the environment on both sides of the film.

 

  1. The mechanism of action of breathable membrane

When the water vapor concentration on one side of the film is greater than the environment on the other side of the film, a humidity gradient pressure difference is formed. This provides the basic conditions for gas (vapor) convection. Due to the formation of convection, the humidity environment on both sides of the film tends to be relatively balanced.

The breathable membrane is used as a water-proof membrane, which has a barrier effect on liquids. Because of the many passages in the membrane, the tortuous channel formed by it has a large “L/D” value, which can be understood as a capillary. Therefore, under the same liquid (such as water) and the same pressure, as long as the height of the liquid column of the capillary is less than the length of the capillary, it can be ensured that the liquid will not leak out.

pe breathable film production line main technical parameters
pe breathable film production line main technical parameters

The production line use PE air-permeable plastic granuels as raw material, and uses extrusion casting method to melt-extrude the PE-modified air-permeable plastic granuels containing inorganic filler through a flat die and the roller is stretched at a high rate to produce a sub-nanometer micro Porous membrane.

pe breathable film production line
pe breathable film production line
pe breathable film production line
pe breathable film production line

FAQ

  • International Commercial Terms(Incoterms): FOB, CFR, CIF, EXW
  • Terms of Payment: LC, T/T
  • Average Lead Time: Peak season lead time: 3-6 months, Off season lead time: 1-3 months
  • Number of Foreign Trading Staff:>50 People

Yes, We own 5 manufacturing bases and sales center in Shanghai , Suzhou ,Changzhou, Zhou Shan, Dongguan China.
Jwell made the first Chinese screw and barrel in 1978 in brand name Jinhailuo.After more than 40 years development,
JWELL is one of the biggest extrusion machine supplier in China with 300design&test engineer, 3000 employees.
Jwell has become the premier supplier of extrusion lines and reliable business partners. Welcome to drop in us.

Our machines taking the European standards and follow the Germany type of business, we cooperation with
International famous brands Siemens Schneider Flender Omron ABB WEG Falk Fuji etc. Our company continuously
imports over 1000 international first-class high precision processing equipment such as multistage machining centers, CNC lathes and CNC milling machines from Korea, Japan etc. All our processes strictly adhere to CE certification,
IS09001 and 2008 quality management system . And we have 12 months quality warranty time. We testing the
machine performances before each delivery. Jwell service engineers will always be here for anything you needed.

Usually it takes about 1 – 4 months depends on different machinery upon receipt of order advance payment.

Once clear your requirements and determined extrusion line is ideal for you. We will send technical solutions and
Proforma Invoice to you. You can pay via TT bank transfer, LC as you like.

One. We provide both customized extrusion lines and technical solutions. Welcome contact with us for technical
innovation or improvements for your future purchasing plan.

We produce more than 2000 advanced extrusion lines every year world wide.

We can send the small spare parts by air express for urgent matter. And the complete production line by sea
to save the cost. You can either use your own assigned shipping agent or our cooperative forwarder. The nearest
port is China Shanghai, Ningbo port, which is convenient for maritime transportation..

Yes, we support our business partners by pre-after sale service. Jwell has more than 300 technical testing
engineers traveling world wide. Any cases would be responded with prompt solutions. We provide training, testing,
operation and maintenance service for a life time.

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the largest manufacturer of plastic extrusion machinery in China

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the largest manufacturer of plastic extrusion machinery in China

  • More Professional
  • More Strength
  • ISO9001/CE Certification
  • Guaranteed Production Capacity
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