When a pure resin is “compound pelletizing”, the more suitable pelletizing method often changes.
For example.
Filling, especially high filling, often makes LLDPE or LDPE pelletizing can be changed from water ring cutting to air-cooled die surface thermal cutting. Both increase rigidity, but also save electricity (eliminating the need for post-drying); grain shape is both beautiful and reduces the loss of prismatic powder.

Enhancement, due to the presence of glass or carbon fiber, so that those resins that can be air-cooled hot cutting (HDPE, ABS, etc.) good fall back to the traditional pulling (water) cold cutting. “General”, and “engineering” (plastic), no exception.
Toughening, such as TPV bumper special material (PP + EPDM + POE dynamic vulcanization), because the dispersed phase of the rubber powder dispersion in the continuous phase of PP, so the water ring heat cutting has become the first choice. It is both beautiful and cost-saving.
Reaction extrusion
(1) Chemical cross-linked cable material (XL-PE) is preferred by air-cooled die-face thermal cutting. In many cable material plants, twin-screw/single-screw double-stage machine + air-cooled thermal cutting (or eccentric thermal cutting) is the standard for SPVC and XLPE compatible production.
(2) In the production of high melt strength polypropylene (HMS-PP), PP reactive extrusion branching can easily accept water ring thermal cut pellets.

Water Ring Pelletizing Cutting:

Water ring die surface pelletizing system, the bonding between the pelletizing cutter head and the die surface adopts pneumatic self-adjusting control, which always ensures that each blade is 100% evenly attached to the die surface, so as to ensure the uniformity of the final pellet size and pelletizing Long service life of the knife set.
Through the optional PLC module, the linear calculation of the pressure value of the machine head and the matching degree of the cutting speed can be realized, so as to realize the automatic control of the cutting speed.

Noodle Type Pelletizing Cutting:

The strips need to be manually pulled into the water tank for cooling and shaping. After leaving the water tank, the water on the surface of the strips is removed by an air knife, pulled by a granulator, and cut and granulated by a hob. This kind of traditional strand pelletizing is highly dependent on labor and requires proficiency in operation, which can meet the pelletizing operation with medium output requirements (below 600kg/h).

Water ring pelletizing cutting video:

Examples of cut pellets for commonly modified special materials or masterbatches
For SPVC cable insulation or transparent medical materials, air-cooled die-side thermal cutting is preferred, as is RPVC, but in smaller quantities.

For polystyrene, whether HIPS or GPPS, the casting belt (inclined water-cooled) cutting line is preferred.

ABS special material, most choose to pull the strip (water) cold cutting (long thin grain shape is most popular). We have tried air-cooled hot cutting or water-ringed hot cutting all OK, the grain shape is also beautiful (positive spherical are available). When the capacity is greater than 3-4t/h, it is logical to switch to underwater thermal cutting or cast tape machines.

Shielded or semi-shielded cable material, small choice of water ring, large choice of underwater (thermal cutting).

For silane cross-linked cable material, choose water ring for small lines and underwater (thermal cutting) for large ones (e.g. 96/250 lines).

HFFR (low smoke and halogen-free cable material) production and cutting grain, and XLPE equipment compatible, but the screw configuration to change.

Copolymer formaldehyde (POM) capping, optional water ring or underwater (cutting).

TPU (thermoplastic polyurethane elastomer), has more options for underwater thermal cutting, but the same direction of the flat double extrusion metering section must be adjusted to build pressure.

PET filament masterbatch, can be equipped with pulling strip (water) cold cutting or casting tape cold cutting.

The popular PPC (polypropylene carbonate) can be blended with almost every kind of degradation resin (TPS, PLA, PBAT, PBS, PHBV, PHA, PVA, PCL, PGA) for blending and granulation.

Noodle Type Pelletizing Cutting Video:

For pelletizing of the following polymers or modifiers, please contact us.

Impregnation method of long glass fiber (LFI-PP, LFI-PA) pelletizing.

Key points: impregnation head with twin-screw, ironing strip, two-speed pelletizing.

Compounding and pelletizing of PE breathable film special materials.

Compounding and pelletizing of cellulose acetate mixed ester molding compounds.

Blending and pelletizing of TPEE (block copolyether ester rubber).

Production and pelletizing of K-resins and modifiers.

Pelletizing or de-volatile pelletizing of SBS, SIS, SEBS and other styrene block elastomers.

Compounding and pelletizing of POE, EPDM and other compatible toughening agents.

Blending and pelletizing of UHMW-PE drilling materials, etc.

Compounding, pelletizing and micro-pelletizing of polyethylene wax (PEW).

Petroleum resin (C5 or C9) compounding and special pelletizing.

Blending and extrusion of nylon (PA6+PA12+SiC) abrasive wire and cutting.