摘要:
A thermal bonding method and apparatus to thermally bond sheets of fill in a cooling tower fill pack are disclosed. The apparatus creates a hemispherical joint extending through two fill sheets to provide a substantial joint between said sheets.
摘要:
A method of manufacturing a product includes the steps of providing a first and a second product part, each including a structure of fibers; arranging the first and second product parts relative to one another and against a support; providing a connecting element having a thermoplastic material; pressing the connecting element against the product parts to compress the semi-parts between the connecting element and the support and impinging the connecting element with energy, thereby causing thermoplastic material of the connecting element to become flowable, and causing the connecting element to be pressed into the product parts; and causing the thermoplastic material to re-solidify, thereby connecting the first and second product parts with each other.
摘要:
Process for manufacturing a plastic fuel tank equipped with a pump, by moulding a tubular parison cut into two sheets with the aid of a mould comprising two cavities and a core, said process comprising the following steps: 1. the parison is introduced into the mould cavities; 2. the core is introduced inside the parison, said core having first been fitted with a swirl pot comprising a housing for the pump; 3. the mould is closed so that the cavities come into leaktight contact with the core; 4. the parison is pressed against the cavities by blowing through the core and/or applying a vacuum behind the cavities; 5. using a device firmly attached to the core, the swirl pot is fastened to the parison; 6. the mould is opened to withdraw the core; 7. the final moulding of the parison is carried out by blow moulding (by injecting a pressurized fluid inside the parison) and/or thermoforming (by applying a vacuum behind the cavities); and 8. the tank is demoulded and through an opening in the latter the pump is mounted in the housing of the swirl pot.
According to the invention, the mounting of the pump is achieved by way of an intermediate part, the external shape of which is standard and complementary to that of the housing, and the internal shape of which is adapted to the pump.
摘要:
Producing an article comprising internal fittings in a hollow thermoplastic body comprises placing a strip- or tube-shaped preform of plasticated resin between the open parts of a mold cavity, placing the fittings between the mold parts, closing the mold, forming the hollow body in the mold cavity and pressing the fittings against the inner wall of the body while it is still plastic so that the resin of the body flows into openings in the fittings. An independent claim is also included for a hollow plastic body with an attachment part (1) that is bonded to the body during its production, where the part has an opening (3) through which plastic from the wall (4) of the body passes in the vicinity of the contact surface (6) between the part and the wall.
摘要:
The present invention provides a method for coupling built-in components (2,3) in a hollow container, comprising: a hollow container (1) forming step of forming the hollow container, the hollow container forming step including securing the built-in components to parisons (P) transferred onto mold pieces (11) and closing the mold pieces with the built-in components in a pre-in the pre-coupled state state; and a built-in components coupling step of coupling the built-in components, the built-in components coupling step including pressing an outer surface of the hollow container to displace the hollow container while cooling the hollow container after removing the hollow container from the mold pieces.
摘要:
There are provided a part fixing structure and a part fixing method to a resin-made fuel tank which can firmly fix a part to a tank wall (T) without the need of providing a molding die (6) with a convex portion and a recess. A part fixing method for fixing a tank-associated part to a tank wall (T) of a resin-made fuel tank, the part being formed together with a pair of hook portions (2), the method comprising a step of burying the hook portions (2) in the tank wall (T) in a melted state when the resin-made fuel tank is molded, thereby fixing the part to the tank wall (T) after the tank wall (T) is cooled. In order to cause the resin of the tank wall (T) to flow well, a chevron portion (4) having a pair of first inclined faces (3P) is projectingly provided at the bottom face (1a) of the part between the hook portions (2), and a second inclined face (5) which is inclined in a direction opposite to the buried direction (P) toward the tip of the hook portion (2) is formed at the bottom face (1a) of each hook portion (2).