PTFE gasket making machine

PTFE gasket making machine Features:Efficiently producing: 300pieces/h(large size);More energy saving: the total power only 5KW;More friendly to environment: no PTFE powder splashing but powder output automatically;More precise: producing gaskets by controlling the power quantity;More time saving : the power cut off automatically while the production number set up;Longer working life : no heat while working.

PTFE gasket making machine

Why Choose PTFE gasket making machine?

Efficiently producing: 300pieces/h(large size);More energy saving: the total power only 5KW;More friendly to environment: no PTFE powder splashing but powder output automatically;Intelligent control : producing gaskets by controlling the power quantity;More time saving : the power cut off automatically while the production number set up;Longer working life : no heat while working;high quality components used.

PTFE gasket making machine

PTFE gaskets are used in many industrial applications, especially the following:

1, Compressor – High temperature and surface-wear resistant sealing gaskets.

2, Electric Motor – Sealing gaskets for components that require corrosion-resistance, exposure to high and low temperatures and high surface wear.

3, Medical Component – Seals for electronic instrumentation using materials that provide secure seals and long product life.  Specialty gaskets, especially miniature sizes, are required for many medical devices.

4, Petrochemical – Gaskets for process equipment that are resistant to corrosive fluids, temperature extremes and surface wear.

Horizontal PTFE Extruder

Horizontal PTFE extruder gives our customers great flexibility while occupying a minimum amount of floor space.

Horizontal PTFE Extruder

Horizontal extruders are come in standard sizes of 25-Ton, 50-Ton, 75-Ton, and 100-Tons of thrust, with stroke lengths of 36", 54", 72", 108" and the World’s Longest Stroke Extruder. This allows productivity unmatched in the industry.  It gives the World's Highest yield per cycle and when combined with our other equipment, makes the perfect extruder for a wire line or tubing line.

Horizontal PTFE Extruder Advantages

* Long service life through solid workmanship and use of high quality componentes

* Low wall thickness tolerance through self-centering mandrel and special nozzle

* Additional heatable extrusion cylinder for better extrusion quality

* Measurement transducer like pressure, force and ram speed for permanent control of the extrusion process and extrusion speed

* Hydraulic closure with high closing force for quick loading of the extruder

* Quick loading with special loading carriage - also possible with several pre-forms, no manual touch

* Special pre-form press with pre-form preparation device for multiple loading of the loading carriage i.e. extruder

* Electrically adjustable mandrel

* Measuring and controlling system for constant extruder speed

* Controlling system for constant speed of the extrudate

* Low space requirement through vertical construction

* Front and back charger, vertical and horizontal possible with hydraulic and spindle drive (2 degrees of accuracy)

* Delivery of complete systems possible (PTFE processing, pre-form press, paste extruder oven, winding unit as well as convoluting machine)

* User-friendly and maintenance-free system

* Special drying and sintering oven with adjustable blind, thus a better temperature guidance within the two zones and avoidance of explosion hazard

* The paste extrusion systems are designed especially to costumers requests

* Automatic adjustment of the total system as well as recording of the formula

* Operating through touch screen and recording of the extrusion process parameters

The difference between several kinds of powder blending machine

The mixing materials of conical twin screw mixer and horizontal ribbon blender are similar, basically common. Conical twin screw mixer has requirements about the factory height; in addition to powder it can also do biological fertilizer and other water products. It uses a dual output reducer, can be added spray device and jacket heating, in order to prevent damage to the machine generally do not set the reverse rotation. Conical twin screw mixer’s rotation mode inclueds both rotation and revolution.


Horizontal ribbon blender’s motor is larger, in addition to ordinary powder, it can make slurry, and it is better to choose horizontal ribbon to make granular materials. But it has some restrictions due to its sealing problems. It can set the reverse rotation, and without revolution.


Besides, powder blending machines also have coulter mixer and agravic mixer. Coulter mixer mixer’s mixing materials might get agglomerate, and it is much easier to get agglomerate if mixing solid-liquid materials. Once coulter mixer adds plow knife, it has effects of breaking materials. Agravic mixer is generally used for mixing materials which has a large specific gravity, such as mixing cement. And its mixing space is W-shape, using biaxial fan-shape paddles.

Isostatic Moulding Machine

Manufacturers of seals and other components utilizing Teflon (PTFE) quickly that they end up sweeping most of their profits out with the machining chips when producing parts from traditionally compression molded rods and tubes. PTFE resins are expensive and making parts from compression molded rods or even tubes often ends up yielding only 10-20% of the material purchased into the finished parts. Since PTFE, once sintered, cannot be reground and reused, 80% of the material cost end up in the trash. The answer is to use isostatic molding techniques to produce thin walled tubing.

Moulding Machine

Originally, when missile nose cones heat shields were manufactured from PTFE, a technique was needed to evenly compress PTFE powder across the bullet shaped surface of a nose cone. This was done by placing PTFE powder over a nose cone shaped aluminum plug, then covering the powder with an elastomeric bladder. The plug, powder and bladder were then placed in a pressure vessel and high pressure water pumped in to achieve the compression of the powder into the preformed shape ready for oven sintering.

As an interesting side note, as rockets grew, and the nose cones became too large to fit into pressure vessels, the bladder-covered plugs with resin powder sandwiched inside were simply lowered into the ocean to the appropriate depth to achieve the appropriate compression pressure.

Modern isostatic molding machines have come a long ways from the missile nose cone days. Now they use oil instead of water in cylindrical pressure vessels. Isostatic molding machines generally use a hydraulic pressure system feeding a custom intensifier to kick the pressure up from the usual 3000 psi hydraulic system components to the higher pressures needed to achieve ideal physical properties in the molded PTFE.

The better designs utilize interchangeable mandrels to make the unit adaptable to many sizes of tubing, and polyurethane end pieces and outer diameter forms to transfer the hydraulic pressure from the urethane bladder to varying different sizes of tubing. The soft urethane acts as a fluid itself to transfer the hydraulic pressure to the powdered resin being compressed. By using soft end bells, end belling common with earlier designs is eliminated so that the entire length of the molded tube is usable.

Minimal hydraulic controls are required, and the majority of the hydraulic components needed are available off-the-shelf. The exception is the intensifier, which must usually be designed from scratch to achieve the required pressure boost and volume make-up requirements of such a large, flexible hydraulic system.

Sintering Furnace for Moulded Rods/Tubes

Sunkoo supplies drying and sintering furnaces especially for the PTFE processing as well as preheating furnace for Molded rods/tubes.

There is also a furnace available for drying and sintering inline systems for the production of Moulded rods and tubes (development of Sunkoo). This high tech furnace  has an adjustable blind between drying and sintering zone, the lamellas of this blind can be cooled. As these two zones can not be influenced because of the stack affect, the required temperature profile can be well controlled in the drying as well as also in the sintering zone. This sintering furnace is available with different sizes. Herewith the furnace can be adapted to the respective requests and the available space.

1.      Product name,: Customized

1.1.            Chamber size: Depend on customer choice.

2.      Thermostat section

2.1.            Working temperature: room temperature--400℃ Temperature stability : ≤±1degree (temperature meter) Temperature uniformity ≤±3 degree


2.2.            The ambient temperature raises to 400 ℃ in 50 minutes (full load)

3.      Control section (Separate, Independent, stand mounted control cabinet)

3.1.            controller model: XMTA


3.2.            controller brand: China Brand Norwich sea

3.3.            temperature controller function: PID control, automatic temperature control thermostat program

3.4.            heating portion


1)      Heating method: stainless steel heater uniformly arranged around the heating portion


2)      The heating element: stainless steel heat pipe, (304 stainless steel heating pipe, heating pipe , 220V / 2.5KW, U connection.)


3)      Heating power: 54kw

4)      The heating control, heating control two groups/sides.


5)      The ventilation system: made of stainless steel produced by 2.0, about duct hot air circulation. Each heating zone and wind zone relatively independent ventilation system (four air guide) to ensure that the furnace temperature uniformity.

4.      Material:

4.1.            The outer shell is made of 1.5mm cold plate manufacturing high temperature spray paint, color matt light blue color.

4.2.            The liner is made of 2.0mm stainless steel plate

4.3.            The Case for the vertical routinely

4.4.            Locking means for the oven: door locks and hinges alloy steel alloy steel.

5.      Insulation and heat preservation

5.1.            Case insulating material: high temperature aluminum silicate fiber cotton filling.

5.2.            The cabinet insulation layer: thickness of 150mm (body surface temperature of the ambient temperature plus 35 degrees)

5.3.            The sealing material 20 * 20mm high-temperature glass fiber strip seal


6.      Furnace Cabinet making


Inside the oven using models and stainless steel plate welded together. Wall panels with 1.5mm cold plate, set reinforcing internal ribs. Liner made of 2.0mm stainless steel production base and frame with a 10 channel welded

Long-life heating element made of stainless steel heating tube evenly distributed over both sides of the furnace duct using Choucha installation, wiring head out of the top heating plate outer shell, using nut, rigid fixation, will not fall, set top heating wiring shield. Heating element from front to back is divided into three temperature zones wiring.

Extrusion Blow Molding


Extrusion is a shape forming manufacturing process that involves forcing material into a die to make other shapes with that matetial. It’s like play dough. Imagine having play dough and pushing it through one of those tools with all the holes. You end up with play dough spaghetti. This is an example of extrusion. You can achieve a lot of different stock sizes and lengths by extruding. Like play dough.

The actual process involves a lot of math and hard work and a lot of set up. You start off with the material. Metal is typically used when doing extrusion. Then that material is pushed through another piece of stronger metal with a shape cut out of it where the material is forced out, creating that shape.

Extrusion blow molding is perhaps the simplest type of blow molding. A hot tube of plastic material is dropped from an extruder and captured in a water cooled mold. Once the molds are closed, air is injected through the top or the neck of the container; just as if one were blowing up a balloon. When the hot plastic material is blown up and touches the walls of the mold the material “freezes” and the container now maintains its rigid shape.

Extrusion blow molding allows for a wide variety of container shapes, sizes and neck openings, as well as the production of handleware. Extrusion blown containers can also have their gram weights adjusted through an extremely wide range, whereas injection blown containers usually have a set gram weight which cannot be changed unless a whole new set of blow stems are built. Extrusion blow molds are generally much less expensive than injection blow molds and can be produced in a much shorter period of time.

The Differences Between ABS and PVC Plastic Pipes

There are heaps of reasons why mortgage holders and handymen alike utilize plastic pipes in their pipes ventures. Plastic funnels are economical, lightweight and will never erode. ABS, UPVC pipes and PVC are both quite common in the pipe system industry. Their versatile and durable qualities make them an easy and cost-effective choice of material. At first glance, the obvious difference between these two composites is the color. ABS pipes are typically black, while PVC is usually white or cream-colored. Aside from this, it’s hard to recognize any other distinctions between the two plastics.

Plastic Pipe

ABS pipes

ABS is the acronym for Acrylonitrile Butadiene Styrene. This is a strong thermoplastic polymer material that is extremely durable even at low temperatures.

Primary use:

Children’s toys;Kitchen appliances;Instruments;Golf club heads;Headgear;Car bumpers;Canoes;Indoor piping

Appearance & features:

Black in colour;Stronger;Shock resistance;Tough;Rigid;Cost effective;Light

PVC Pipes

PVC stands for polyvinyl chloride. This is, without doubt, one of the world’s most common plastic materials. In fact, PVC is the third-most common synthetic plastic polymer across the globe, behind polyethylene and polypropylene. You can find this material in two basic forms — rigid and flexible.

Primary use

Pipes;Cable insulation;Clothes;Children’s toys;Shower curtains;Kitchen utensils;Car interiors;Drinking water systems;Garden piping.

Appearance & features

White in color; Flexible;Available in specifications like, “40mm PVC pipe” or “20mm PVC pipe”;Strong;Rigid;Cost effective & affordable

This type of plastic is tough, rigid and very cost effective. The one major downfall with ABS in comparison to PVC is that it is more likely to deform if exposed to baking sunlight. For this reason, the material is rarely used outside or above ground.

Which One is the Strongest?

Without question, ABS channels have a higher effect quality than the PVC elective. This is particularly valid at low temperatures. They are likewise a considerable measure less demanding to introduce with a speedy one-stage joining process. On the drawback however, the materials quality can be debilitated when presented to the sun and you may encounter distortion. Henceforth, why you once in a while observe ABS outside!