B29C48/2883

SELECTIVE ATTACHMENT OF A YARN STRUCTURE
20240042679 · 2024-02-08 · ·

A method and system are disclosed. A method of printing onto a base having an upper surface spaced from a lower surface by a base thickness includes dispensing a yarn from a nozzle of a printing system and selectively attaching the yarn to a first attachment region. The step of dispensing the yarn includes dispensing a heat-moldable material and a melt-resistant material. The step of selectively attaching the yarn to the first attachment region includes moving the nozzle into the first attachment region. The step of moving the nozzle into the first attachment region reduces the base thickness by a prodding distance. The heat-moldable material bonds to the first attachment region.

Fiberoptic loose tube manufacture and post extrusion shrinkage

Elastic compression apparatus for loose tube used in fiber optic cables, comprising compression contacts for gripping the loose tube following extrusion, the loose tube being made of a first material having a predefined post-extrusion shrinkage, and the compression contacts being made of a second material, wherein the compression contacts are modified to provide a coefficient of friction between the two materials such that said compression contacts apply a radial pressure and an axial tension to said tube that cause elastic deformation only and do not cause plastic deformation. The tube may be extruded at a line speed rate that is relatively different from the optical fiber line speed rate, and causes elastic extension of the tube over the distance that would be covered by post-extrusion shrinkage.

HEATED RESPIRATORY HOSE WIRING
20190344037 · 2019-11-14 · ·

A method of forming a hose includes: extruding a web of plastics material from a first extruder; helically winding the extruded web about a mandrel or at least one rotating rod to form a wall of the hose; feeding an electrical wire into a second extruder; extruding a bead of plastics material around the electrical wire from the second extruder such that the extruded bead includes the electrical wire at a location within a cross-section of the extruded bead; cooling the extruded bead to cool the plastics material adjacent the location to prevent migration of the electrical wire away from the location; re-heating the extruded bead to cause outer surface portions of the plastics material of the extruded bead to become molten; and helically winding the extruded bead onto and about an external surface of the wall to provide the wall a support helix that incorporates the electrical wire.

Selective attachment of a yarn structure
10471654 · 2019-11-12 · ·

A method and system are disclosed. A method of printing onto a base having an upper surface spaced from a lower surface by a base thickness includes dispensing a yarn from a nozzle of a printing system and selectively attaching the yarn to a first attachment region. The step of dispensing the yarn includes dispensing a heat-moldable material and a melt-resistant material. The step of selectively attaching the yarn to the first attachment region includes moving the nozzle into the first attachment region. The step of moving the nozzle into the first attachment region reduces the base thickness by a prodding distance. The heat-moldable material bonds to the first attachment region.

Extruder for extruding an electrically insulating layer comprising a barrel having a liquid injection channel
20240127984 · 2024-04-18 ·

An extruder (5) for extruding an electric cable has an extrusion screw (7) arranged inside a barrel (6) and making it possible for the polymer to melt gradually in order to form an extrusion composition and for this composition to be transported along the extrusion screw (7). An extrusion head (8) is arranged at a distal end (21) of the extrusion screw (7) and configured to apply the composition around an elongated electrically conductive element. The at least one liquid injection channel (22) is formed through the barrel (6), the at least one injection channel (22) having at least one outlet orifice (30) emerging in a zone of the extrusion screw (7) in which the thermoplastic polymer is at least partially in the solid state.

Extruder for extruding an electrically insulating layer comprising an extrusion screw having a liquid injection channel

An extruder (5) for extruding an electric cable includes at least one elongated electrically conductive element and at least one extruded thermoplastic layer surrounding said elongated electrically conductive element. The extruder has a member (4) for feeding a polymer in solid form, a barrel (6) fed by the feed member, and an extrusion screw (7) arranged inside the barrel (6) and making it possible for the polymer to melt gradually to form an extrusion composition and for this composition to be transported along the extrusion screw (7) to a distal end (21) of the extrusion screw (7). The extrusion screw (7) extends along a longitudinal axis (A). The extrusion screw has a barrier zone having at least two threads with an extrusion head (8) arranged at a distal end (21) of the extrusion screw (7) and configured to apply the composition around an elongated electrically conductive element. At least one liquid injection channel (22) is formed in the extrusion screw (7). The at least one injection channel (22) emerging inside the barrel (7) level, with at least one outlet orifice (30) formed on an outer surface of the extrusion screw (7).

Method for manufacturing an electric cable by extruding a composition based on a thermoplastic polymer, a dielectric liquid and uniformly distributed nanofillers
20240120133 · 2024-04-11 ·

A method for manufacturing an electric cable includes a step of mixing an extrusion composition having at least one thermoplastic polymer in the form of solid particles, a dielectric liquid and at least one nanofiller, a step of introducing the extrusion composition into a feed zone of a barrier screw which zone is situated at the inlet of the extruder, and a step of applying the extrusion composition coming from the prior step around an elongate electrically conducting element at the head of the extruder. The mixing step includes a step of premixing the dielectric liquid with the at least one nanofiller to obtain an intermediate composition which is then mixed with the at least one thermoplastic polymer in order to obtain the extrusion composition.

SEAL WITH RAT RESISTANT BARRIER
20190316410 · 2019-10-17 ·

A flexible and oblong blade seal for sealing a gap between a door leaf and an adjacent surface includes a flexible outer material and B) a section with the sealing function (the sealing section), in which a barrier of a plurality of substantially parallel metal wires and/or narrow metal strips is embedded in the flexible outer material in such a way, that the wires and/or strips are arranged in parallel to the longitudinal direction of the seal. A method for mounting such seals and a method for producing them.

Coating System and Method
20190308396 · 2019-10-10 ·

A coated article comprises a composite substrate formed from a reinforcing feedstock at least partially embedded in a matrix polymer, the composite substrate comprising an outer surface. The coated article further includes a coating comprising a protective bilayer that includes a first protective layer comprising an inner face coupled to the outer surface of the composite substrate, and a second protective layer coupled to the first protective layer at an interface, wherein the interface opposes the inner face of the first protective layer and an outer face of the second protective layer. The first protective layer comprises a first thermoplastic polymer that is a first acrylic or acrylic-based polymer, and the second protective layer comprises a second thermoplastic polymer that is a blend of a fluoride-containing polymer and a second acrylic or acrylic-based polymer.

Method for producing a framework
10384387 · 2019-08-20 · ·

With a method for producing a two-dimensional or three-dimensional framework (1) with rods (2) of a composite material with fibers and a matrix, which are connected with nodes (3) to at least one other rod (2) and/or another component (29), comprising the steps of: producing the rods (2) out of a composite material, connecting the rods (2) with at least one other rod (2) and/or another component (29) at the nodes (3), the framework (1) should be manufactured inexpensively and reliably by a low technical effort. This object can be solved in a way that the rods (2) are being produced with pultrusion and/or extrusion and a pultrusion unit (6) and/or an extrusion unit (7) is moved in space such that after the pultrusion and/or extrusion the pultruded and/or extruded rods (2) are pultruded and/or extruded in each case at the required position within the framework (1).