摘要:
A seaming system for forming a seam is disclosed, wherein the seam consists of at least two opposed sections of high-modulus, high-tenacity, low-elongation fabric sections joined by a tape. The system comprises a seamer head, and a seamer base that includes a topography configured to impart a predetermined pressure gradient to the adhesive layer, tape, and fabric sections of the seam. The resultant seam has a cross-section or thickness profile that generally corresponds to that of the applied pressure gradient. As such, the constructed seam more efficiently distributes stress imparted from any applied load.
摘要:
A method for producing a welded resin material contains steps of: superimposing a resin member having transmissibility to laser light and a resin member having absorptivity to laser light to form a contact part where the resin members are in contact with each other; forming a closed space that is adjacent to the contact part and faces one end of the contact part; and radiating the laser light from the resin member having transmissibility while pressing the resin members to each other through the contact part, so as to heat the contact part to melt a resin at the contact part, housing a resin excluded from the contact part through melting in the closed space, solidifying the resin melted at the contact part to weld the resin members.
摘要:
An apparatus for connecting together two sections of tubing using a laser. A pair of fixtures hold the two tubing sections in opposed, end-to-end relation so that axially facing surfaces of the tube sections at the ends are free from exposure to a surrounding environment. A photodiode laser emits an electromagnetic beam at a separate sheet of material positioned between the axial surfaces at the ends of the tubing sections. The sheet absorbs energy of the electromagnetic beam. The pair of fixtures move the two tubing sections to bring the respective axially facing surfaces of the two tubing sections into engagement with the sheet and after the axially facing surfaces of the two sections are brought into engagement with the sheet, the electromagnetic beam is directed onto the sheet for welding the two sections of tubing together.
摘要:
A seaming system for forming a seam is disclosed, wherein the seam consists of at least two opposed sections of high-modulus, high-tenacity, low-elongation fabric sections joined by a tape. The system comprises a seamer head, and a seamer base that includes a topography configured to impart a predetermined pressure gradient to the adhesive layer, tape, and fabric sections of the seam. The resultant seam has a cross-section or thickness profile that generally corresponds to that of the applied pressure gradient. As such, the constructed seam more efficiently distributes stress imparted from any applied load.
摘要:
There is prepared at least one flame retardant sheet member in which a flame retardant layer comprised of a flame retardant agent having extinguishability is sandwiched between resinous layers. One end face of the at least one sheet member and another end face of the at least one sheet member are opposed to each other while forming a clearance therebetween. A first welding member having a first width larger than a width of the clearance is placed on one face of the sheet member. The first welding member is welded with the end faces of the at least one sheet member such that the first welding member is melted and pushed into the clearance while the flame retardant agent situated in the vicinity of the end faces is pushed out from the clearance, thereby forming a joint portion. A second welding member having a second width larger than the first width is placed on the joint portion. The second welding member is welded with the at least one sheet member.
摘要:
A method is proposed for welding a first component part to a second component part, the energy to melt melting regions being supplied by a laser beam. In this context, the laser beam is directed through the first component part, which is made of a nonabsorbing material, to the second component part. The second component part is made of a material which strongly absorbs laser beam. At least one stop is provided outside melting regions.
摘要:
As the first object, the present invention intends to provide high-pressure composite pipes which show remarkable pressure resistance and optimum applicability in various uses and which can be economically manufactured in a light weight. As the second object, the present invention intends to provide a joining method which is capable of firmly joining the high-pressure composite pipes in a simple operation, firmly joining the high-pressure composite pipes by reinforcing the joint strength at the butt-fused area, and making a joint area adjustable to strain of the high-pressure composite pipes. To achieve these objects, a high-pressure composite pipe of the present invention comprises a pipe-shaped inner layer made of a synthetic resin, a reinforcing layer made of a stretched polyolefin resin sheet and wound on an external circumferential surface of the inner layer, and an outer layer made of a synthetic resin and disposed on an external circumferential surface of the reinforcing layer. The winding direction of the reinforcing layer is oriented at a predetermined angle relative to the axis of the pipe. Between the inner layer and the reinforcing layer and between the outer layer and the reinforcing layer, adhesion layers having affinity to these layers are interposed. The joining method of the present invention is a method for joining the above high-pressure composite pipes, and comprises the steps of: heating and melting an end of each high-pressure composite pipe; flaring the melted end of each high-pressure composite pipe, with a diameter thereof gradually enlarging toward an end face thereof; and butting the flared ends of both flared high-pressure composite pipes together and fusing internal circumferential surfaces of their inner layers, with their reinforcing layers being turned outwardly.
摘要:
The invention concerns an ultrasonic device (100) for sealing at least two superimposed sheets (1, 2), said device comprising a sealing assembly consisting of two elements which are respectively an anvil (102) and a sonotrode (101), arranged opposite each other so that their facing surfaces (101null, 102null) form an interstice (103) for passing through the sheets to be sealed, said interstice having an inlet section (104) and an outlet section (105), the sonotrode vibrating at high frequencies to emit ultrasonic waves, characterised in that means are provided for generating between the superimposed sheets and said sealing assembly a relative movement along a specific feeding direction (F) relative to the sealing assembly, and the section of said passage interstice decreases between its inlet section and its outlet section, and at least one element of said sealing assembly comprises a projecting ridge emerging into said passage interstice and extending along a direction globally parallel to said feeding direction (F). The invention also concerns a related method for sealing flexible packages, and the resulting packages.
摘要:
The invention provides for improved welding of thermoplastic sheets by selectively reducing and optimizing the temperature gradient from the edge of the weld to the unheated body of the sheet by adding heating-surface-area, beyond that required to achieve a weld, to a heating tool for the purpose of raising the temperature of the material adjacent to and along the edge of the weld, in a controlled manner.
摘要:
The present invention provides a method for connecting rounded members between planar members comprising the steps of providing a rounded member having an outer layer having a first melting temperature range and an inner layer concentrically disposed within the outer layer and having a second melting temperature range, the second melting temperature range being warmer than the first melting temperature range, providing a pair of opposed planar members, the planar members each having a melting temperature within the first melting temperature range, positioning an end portion of the rounded member between perimeter edges of the pair of planar members to define an interface area, applying pressure to the interface area to collapse the end portion of the rounded member to essentially a flattened position, applying sealing energy to the interface area to heat the rounded member to a temperature within the first melting temperature range but below the second melting temperature range, thereby forming a weld between the planar members, and the rounded member in the interface area, and, releasing the pressure to the interface area wherein the end portion of the rounded member returns to an open position.