Abstract: The invention provides a process for bonding a pressure-sensitive adhesive to a rubber article. The process includes the steps of heat laminating a heat-activatable adhesive bearing a primer layer to the rubber article at a temperature of at least 100° C. and bonding the pressure-sensitive adhesive to the primer layer. The invention also provides an assembly comprised of a shaped rubber article heat laminated to an adhesive bearing a primer. The invention also provides article of manufacture for bonding a rubber article to a surface.

Abstract: A laminated printing blanket having compressible and resilient properties and a method for its production are provided. The compressible characteristics are provided by disposing an intermediate layer having substantially uniformly distributed voids of substantially uniform size between the base ply and the working surface of the printing blanket. The voids of the compressible intermediate layer are formed by introducing high melting point microspheres formed from thermoplastic resins into an elastomeric matrix, coating said microsphere containing elastomeric matrix upon an upper surface of the base ply and then vulcanizing the coated base ply at a temperature of between about 80-150° C. for between about one and six hours to form the compressible layer having substantially uniform compression characteristics. Once all of the layers of the blanket are stacked, a final vulcanization treatment at between about 132-160° C.

Abstract: The invention is a method for curing a sealant used to affix two substrates to one another. The sealant requires curing by heat or uv photons. To overcome the shadowing caused by metal patterns, the uv light is directed in a path towards said sealant, and a light diffusion element is positioned in the optical path. The diffusion element causes a diffusion of the optical radiation so as to enable some of the diffused optical radiation to avoid the metallization features and to be incident on the sealant. If the sealant is of the dual cure type, the curing thereof is further aided by application of heat.

Abstract: A web of material having a multiplicity of discrete regions or patches spaced apart from each other on at least a first side of the web, and methods of making the web. A plurality of stems extend from each patch. In certain embodiments, at least a portion of the web may be configured to engage the plurality of the stems, and the web may include a breathable (microporous) and/or elastic material. A method of making a web includes providing a web and discrete quantities of a polymeric material. The polymeric material is fused to the web; and a plurality of stems are formed in each of the discrete quantities of the polymeric material to form fastener patches or regions. The discontinuous fastener patches can function as the male component of a hook-and-loop refastenable mechanical fastener.

Abstract: The method consists of introducing the dripper units (1) one after the other inside a conduit (2) while the latter is being formed in an extruder (10), then calibrated in a calibrator (13), heat welding the dripper units (1) to the inner wall (3) of the conduit (2) gradually as it progresses downstream of the extruder (10), then cooling the conduit (2) and perforating it opposite each dripper unit (1) to make it communicate with the exterior. According to the invention, the heat welding operation is executed downstream of the calibrator (13) by pinching the dripper unit and the wall of said conduit between first and second opposing surfaces (20, 22b) one of which is driven at the speed of progression of the conduit (2) and the other is arranged on a fixed support member (16) forming a feed guide for the dripper units (1). The dripper units are presented for the pinching operation one after the other contiguously by their ends.

Abstract: A method of curl control for lamination of a polymer sheet to each side of a core material comprising providing a bottom polymer sheet, bringing said bottom sheet into contact with a heat source, providing said core material, bringing said core material into contact with said bottom polymer sheet while simultaneously applying a binder between said bottom sheet and said core to form a laminate, providing a top polymer sheet, bringing said top sheet into contact with said laminate and while simultaneously applying a binder between said top sheet and said laminate to form a composite wherein each sheet to core modulus ratio is greater than 1 and wherein said composite has a desired curl.

Abstract: A handle for use in production of brushes by fusion. The handle is injection molded with a set of pre-formed holes. Each hole contains, on its bottom surface, a protrusion of excess material. Bristles for the brush are heated to form a small fuse at their ends. When the fused ends are inserted into the holes, material from the protrusion flows around the fuses, retaining them in the holes upon cooling.

Abstract: A composite material suitable for labeling a substrate. The composite material, which is preferably a ceramic composite, comprises a fired ceramic body and a layer thereon. The fired ceramic body includes a base layer that comprising a glassy phase and a refractory phase, the glassy phase being capable of wetting a substrate at an application temperature. There is sufficient color contrast between the top layer and the fired ceramic body such that a code pattern (e.g., a bar code) present (or formed) is optically discernible. Methods of making and using the same are also taught.

Abstract: A process for manufacturing individual layered structures and the structures themselves. A continuous layered structure is provided. The continuous layered structure has designated cutting regions and includes a particulate material between the layers. At least one of the layers is permeable to liquids. A thermoplastic material in liquid state is applied to the continuous layered structure over at least part of the designated cutting regions to provide the designated cutting regions with a joining means. The thermoplastic material is made of natural or synthetic polymers, or mixtures thereof. The thermoplastic material has a softening point, as measured according to the ASTM Method E 28-67, lower than 120° C.; a viscosity at 130° C. lower than 0.05 Pa.s; and a temperature range in which the viscosity changes between 0.05 Pa.s and 0.35 Pa.s which is greater than 5° C. The thermoplastic material is allowed to set.

Abstract: The present invention provides a method for producing multifilament elastomeric yarn of modified cross-sectional shape and surface by hot-pressing a coalesced elastomeric multifilament yarn between rolls, thereby modifying the cross-sectional shape and/or surface of the multifilament.

Abstract: A resin laminated metallic sheet having excellent adhesion during forming, corrosion resistance, and impact resistance is continuously manufactured at high speed with consistent properties is constantly kept at a selected and variable traveling speed of the metallic sheet by controlling the orientation of resin film after lamination, heating the continuously traveling metallic sheet, laminating resin films on both sides of the heated metal sheet using laminating rolls, and thereafter deflecting the traveling direction of the resin laminated metallic sheet using a deflector roll disposed movably in a direction perpendicular to the direction at a right angle from traveling direction of the metallic sheet, and further, differentiating a contacting period of time in which each surface of the resin laminated metallic sheet is contacting each of the laminating rolls, or differentiating an amount of the heat of each surface portion of the resin laminated metallic sheet lost by the cooling effect due to the contact o

Abstract: A method and apparatus for applying an extrudable material to a substrate, in which a concentrated light beam is directed onto the substrate before or after the application of the extrudable material. The energy of the beam is concentrated on the substrate surface, wherein it is subsequently transferred to the extrudable material deposited on its surface, thereby increasing the temperature and lowering the viscosity of the closely situated material so as to facilitate material penetration into the substrate. This method allows the use of illumination of modest energy density, of wavelengths absorbed by the extrudable material, or of such cross-sectional extent that it may not be transmitted through the extrusion device by which the extrudable material is deposited.

Abstract: A method of preparing a vehicle panel assembly for attaching the panel to a vehicle is disclosed which provides a “ready-to-install” panel assembly. The panel assembly includes first and second spaced sides, with the bead of heat activated adhesive provided on the second side of the panel. The panel and bead are heated preferably by applying shortwave and longwave infrared radiation, with the shortwave infrared radiation being applied to an adhesive free side of the panel to heat the panel and, thereby, indirectly heat the bead of the heat activated adhesive. The longwave infrared radiation is applied to the adhesive side of the panel to directly heat the bead and thereby activate the adhesive. The ready-to-install adhesive may be applied on or adjacent to a gasket, such as a polyvinyl chloride (PVC) molding, a urethane molding, or the like.

Abstract: It is an object of the present invention to provide a method of and an apparatus for manufacturing a resin coated metal sheet, in which it is possible to reduce bubbles included between a laminated resin film and a metal sheet even when a thermoplastic resin film is laminated onto a web-shaped metal sheet even at high speed, and the laminated resin film is excellent in formable adhesion. The method of manufacturing a resin coated metal sheet comprises the steps of heating a web-shaped metal sheet (1), which advances continuously, supplying a thermoplastic resin film (5), which is heated to below a softening temperature of the thermoplastic resin film and to at least a surface temperature of a lamination roll (7), to a nip of the lamination rolls while maintaining the thermoplastic resin film at a higher temperature than the surface temperature of the lamination roll (7), and pressure-welding the metal sheet (1) and the thermoplastic resin film (5) against each other to laminate them.

Abstract: An inflatable structure comprises an inflatable tubular member that is constructed of an elongate, flexible strip of woven fabric that is impervious to air and water. The elongate strip has a first elongate edge and a second elongate edge and is spiraled into a tubular shape such that the first elongate edge is adjacent the second elongate edge to thereby form a spiral seam. A first elongate tape member is thermobonded to an inner surface of the tubular member along the length of the spiral seam for sealing the spiral seam from inside. A second elongate tape member is thermobonded to the outer surface of the tubular member along the length of the spiral seam for reinforcing the spiral seam.

Abstract: Red decorations on substrates which can undergo decorative baking, such as glass, porcelain, ceramic and metal, can be produced using nanoporous aluminium oxide membranes according to the invention, the nanopores of which contain ligand-stabilized gold clusters. The membrane is applied to the substrate followed by baking, resulting in formation of the red color. Alternatively, the membrane can be converted into a red membrane by thermolysis, after which the membrane is employed for production of the decoration. The membranes according to the invention can be obtained by bringing a nanoporous Al2O3 membrane into contact with a solution of a ligand-stabilized gold cluster, in particular one of the formula Au55L12X6, wherein L is a phosphane ligand and X is an anion.

Abstract: A method for making electronic circuit component having improved mechanical properties and thermal conductivity comprises steps of providing NiAl and/or Ni3Al, and forming an alumina layer thereupon prior to applying the conductive elements. Additional layers of copper-aluminum alloy or copper further improve mechanical strength and thermal conductivity.

Abstract: A method of assembling strings of pocketed coil springs into an innerspring core which may be used as the core of a mattress, cushion or similar body support foundation uses plastic netting reinforced nonwoven webs supplied between a pair of spaced apart heated rolls. Strings of pocketed coil springs are fed in seriatim into the nip between the rolls to heat the netting and activate an integral adhesive to bond the webs to the top and bottom surfaces of the pockets of each string. The core formed thus has reinforced webs on the top and bottom of the strings. The process overcomes the problems encountered when hot melt spraying is utilized to bond the pocketed coil strings together.

Abstract: A friction material pad comprises a lamination of stacked sheets, each of which has a top edge forming the friction face that is generally parallel to the direction of relative rotation between the friction pad and an opposing rotary member. Each sheet is formed by a wet paper making process and has a plurality of unwoven fibers, platelets, flakes, or the like, more than half of which are oriented within 45.degree. of perpendicularity to the top edge, the sheets being bound together by a resin binder to form a lamination in which the sheet edges progress from inner to outer sheets to form the friction face of the pad, each sheet having the same blend of friction and lubricating particles, fibers and fillers in a resin matrix. Three groups of sheets are heat aged to different densities and have different friction, hardness and stiffness characteristics.

Abstract: A heat laminated fabric hinge and a method of making same, where the heat laminated fabric hinge comprises a first member with a hinge attachment surface, a second member with a hinge attachment surface, and a fabric hinge member. The fabric hinge member is secured to the hinge attachment surfaces of the first and the second members by heat lamination, whereby at least some of the fibers of the fabric hinge member are embedded within the hinge attachment surfaces of the first and the second members.

Abstract: A process for producing a friction material is disclosed, which comprises integrally bonding a preform of a friction material molding compound by heat-forming to a metallic backing plate which has been formed into a given shape and has undergone degreasing and priming, said heat-forming being conducted after the backing plate has been preheated to a temperature about equal to the heat-forming temperature to be used. The process is effective in simplifying the temperature control conducted in the heat-forming step and in providing high-quality friction materials always having stable physical properties and performances.

Abstract: A method of making a two-disc laminated optical disc, comprises: continuously producing two synthetic resin discs in one injection molding machine using one stamper; forming a reflecting film and a protection film on each synthetic resin disc; and bonding together the two synthetic resin discs by forming an adhesive layer therebetween.

Abstract: A method of performing a lower temperature bonding technique to bond together two mating pieces of glass includes applying a sodium silicate aqueous solution between the two pieces.

Abstract: A method of welding mitered surfaces of frame sections made of plastic material and having incorporated therein a seal of weldable material extending along the frame sections and composed of an attachment foot and at least a sealing lip, for use in windows or doors, includes the steps of heat-welding mitered surfaces and adjoining frame section zones by means of a heated mirror while covering during welding operation an inner contour of the seal by at least one form-part that is positioned in and neighboring the miter plane and has a contour which substantially complements the inner contour of the seal. Subsequently, after removing the heated mirror from the miter corner and withdrawing the form-part the area of the seal, the mitered surfaces of the frame section are squeezed together.

Abstract: This invention relates to a process for applying an edgeband to a planar edge and an apparatus for performing the process. In the process, one or more gluing edge(s) of the structure and/or edgeband is/are heated to a temperature of greater than 25.degree. C., a heated reactive adhesive is then applied to the gluing edge(s), the structure and edgeband are then brought together to form a composite structure, with the reactive adhesive forming the bond. In the apparatus, the reactive adhesive is provided from a sealed adhesive system.

Abstract: A method is provided for forming a curve or curves in a thin solid surface material such as an acrylic sheet material. The method includes taking a sheet of solid surface material of a thickness within the range of 1.4 mm to 5.9 mm and placing the sheet in or on an apparatus which includes a heating station a platen or platens and a vacuuming station including a sandwich mold. The heating platens are set at a predetermined temperature within the range 80.degree. C. to 200.degree. C. and the solid surface material to be formed is brought into contact with or at least near the heating platens so that heat emanating from said platen/s is distributed substantially uniformly across at least one surface of the solid surface material. The heating of the solid surface material is for a predetermined time within the range of 5 seconds-10.0 minutes according to the temperature selected from the temperature range.

Abstract: Apparatus for coating metal sheets with plastic film, consisting of a sequential arrangement of metal sheet feed (1), oven (3), film feeding unit (4), corona stations (9), laminating rolls (10), texturing or smoothing rolls (7) and printing mechanism (8).

Abstract: When producing a laminated metal sheet, the air bubbles taken in when laminating can be lessened so that a laminated metal sheet with low rate of air bubbles can be obtained. For this purpose, in a production method of a laminated metal sheet comprising the steps of laminating of plastic film 2 on at least one side of a metal sheet strip 1, the plastic film is heated to a temperature of between the glass transition temperature of the plastic film and a temperature at which the thermal shrinkage of the film attains 3% when the plastic film is kept for 30 minutes at a constant temperature, and just after the heating, the plastic film is brought into pressure contact with the metal sheet, by which laminated metal sheet in which air bubbles are hard to be taken in when laminating, and the rate of air bubbles is low can be obtained.

Abstract: A sound insulating membrane and processes for forming, particularly well suited for use in floor, ceiling and wall constructions. The membrane comprises at least one backing layer in contact with a layer of nonfoam polymeric material. The polymeric material has an elongation factor of about 500% to about 900% and a Shore A hardness of from about 65 to about 80 points, 5 seconds. In a preferred embodiment, the polymeric material comprises 40-70% chlorinated polyethylene, 20-30% ethylene vinyl acetate, and up to 10% polyvinyl chloride. Floor, ceiling and wall constructions and related methods utilizing the sound insulating membranes are also disclosed.

Abstract: The invention provides a mounting method for a semiconductor chip, wherein after disposing the anisotropic conductive adhesive on a circuit board, the circuit board is preheated to a temperature lower than the hardening temperature of the anisotropic conductive adhesive, the semiconductor chip is disposed on the circuit board thereafter, and the anisotropic conductive adhesive is hardened by thermally press-bonding the semiconductor chip onto the circuit board by applying pressure as well as heat so that generation of air bubbles is minimized ensuring good adhesion therebetween. It is also possible to prevent occurrence of thermal strain by heating simultaneously the under surface of the circuit board at a temperature lower than a heating temperature for the semiconductor chip.

Abstract: A vehicular seat fabrication system for fabricating a seat for an automotive vehicle. The system comprises first and second rows of fabrication devices so that a pair of left-side and right-side fabrication devices are located side by side. Each fabrication device includes a lower base member, and an upper base member which is pivotally connected through a pivot shaft to the lower base member so as to be turnable around the pivot shaft. A lower die is connected to the lower base member and movable upward and downward relative to the lower base member. A skin material is to be set to the lower die. An upper die is secured to the upper base member so that the lower die is approachable to the upper die. A pad material is to be set to at least one of the skin material and the pad material.

Abstract: A laminated printing blanket having compressible and resilient properties and a method for its production are provided. The compressible characteristics are provided by disposing an intermediate layer having substantially uniformly distributed voids of substantially uniform size between the base ply and the working surface of the printing blanket. The voids of the compressible intermediate layer are formed by introducing high melting point microspheres formed from thermoplastic resins into an elastomeric matrix, coating said microsphere containing elastomeric matrix upon an upper surface of the base ply and then vulcanizing the coated base ply at a temperature of between about 80-150.degree. C. for between about one and six hours to form the compressible layer having substantially uniform compression characteristics. Once all of the layers of the blanket are stacked, a final vulcanization treatment at between about 132-160.degree. C.

Abstract: The process of forming a part from laminae of powders of materials such as metals, ceramics, intermetallics and composites of such materials, that include forming laminae; forming a stack of the laminae characterized as having a configuration from which a part is to be formed; heating the stack to consolidation temperature, and applying pressure to the heated stack to consolidate the laminae in the stack.

Abstract: An air filter comprising a laminate of a non-woven fabric made up of polyolefin fibers or polyester fibers or a composite of the non-woven fabrics and a PTFE porous film, wherein the amount of the total gases generated from the air filter is 20 .mu.g/g by the analysis of gas chromatography. The amount of the gases generated from the air filter is greatly reduced by heat-treating the non-woven fabric at a temperature of from 80 to 130.degree. C. for from 5 minutes to 20 minutes before or after laminating with the PTFE porous film.

Abstract: A method for producing a covering of this invention comprises the steps of: placing a green web including an air-containing fabric layer in a mold having a predetermined shape; and compressing the green web into the predetermined shape in such a way that the air-containing fabric layer has a predetermined hardness. A covering produced by this method comprises: a first layer; and a second layer integrally connected attached to the first layer. The second layer includes a compressed air-containing fabric. Thereby, the covering having high performance of absorbing sound and insulating heat and high productivity can be provided.

Abstract: A method for preparing a laminate including pressing a heater against the upper and lower surfaces of a veneer during which an inner portion of the veneer in the thickness direction is dried to the smallest extend then the surfaces so that a water content of the inner portion is kept higher than that of the surfaces, dividing the veneer in terms of its thickness into two counter veneers, placing a ligneous board between the counter veneers using an adhesive so that the surfaces resulting from the diving are disposed as outer surfaces, and pressing a heater against the outer surfaces to effect bonding of the counter veneers and the ligneous board.

Abstract: A laminate suitable for formation of athletic lettering and other decoratives which has improved adhesion and reduced curling is formed by forming a laminate from a pigmented polyurethane and a polyester adhesive layer. Either the individual lamina prior to lamination, or the formed laminate are annealed for 1 to 100 hours at a temperature from 100.degree. to 250.degree. F. to relieve stress and prevent curling. Preferably, the polyurethane layer does not include any external lubricants and has a high durometer which, in turn, permits formation of letters on letters without bleedthrough and with improved adhesion.

Abstract: A method and apparatus for applying a pre-formed decoration to an article provides that the article is immersed into a liquid on which the decoration is floating. Prior to transferring the decoration to the article, the decoration is heated and hot water vapor may be used.

Abstract: A fuser member for fixing toner to a recording medium having a fluoropolymer non-stick topcoat on a compliant silicone rubber baselayer bonded to a metallic insert is provided. The fluoropolymer is adhered to the silicone rubber baselayer using a primer of a blend of silane and a polyamide resin. The primed silicone baselayer is preheated in an infrared oven to remove low molecular weight fractions. A primer is applied to the prebaked rubber and completely dried before applying the fluoroelastomer topcoat by spaying.

Abstract: A method for a production of a laminated metal sheet which can reduce the ratio of pinholes being caused in a synthetic resin film (the incidence of pinholes) upon deep draw forming of the laminated metal sheet involves superimposing the heated metal sheet on the synthetic resin film unwound from a film roll, passing the heated metal sheet and the synthetic resin film through a pair of laminating rolls to laminate the two together, the laminating process being carried out in a laminating chamber in which the concentration of fine particles having a mean particle diameter exceeding 3 .mu.m is kept below 100 pieces/ft.sup.3.

Abstract: An improvement is proposed in the method for adhesively bonding a decorative overlay film of a plastic resin to the surface of an acrylic resin board with a hot-melt adhesive, by which the overlaid acrylic resin board can be imparted with greatly improved stability of overlaying lamination as well as good machining workability of the board. The improved method comprises the steps of: (a) demoisturizing the acrylic resin board by heating at 60-90.degree. C. for at least 2 hours; (b) forming a layer of a hot-melt adhesive on at least either one of the resin board and the overlay film; (c) laminating the resin board and the overlay film with the adhesive layer therebetween to obtain a laminate by passing between a pair of laminating rollers while the surfaces to be brought into contact with each other are kept at an elevated temperature; and (d) subjecting the laminate to an aging treatment by heating at 30-60.degree. C. for at least 1 hour.

Abstract: For the production of a multilayer pipe of thermoplastic material, in particular polyolefine, an extrusion equipment is provided, extruding at least one tube in a direction of production. A calibrating arrangement for forming a pipe of externally profiled shape is provided downstream of the extrusion equipment. The calibrating arrangement is followed by a preheater for heating to welding temperature the outer surfaces of the externally profiled shape. Furthermore, a coextruding head is provided, having an extruder for coextruding a tube around the pipe, the coextruding head having a partial vacuum connecting line for the tube and the outer surfaces to be welded together under the difference pressure between ambient pressure and partial vacuum.

Abstract: A method of molding a component such as a headliner or sun visor for the interior of automotive vehicles is molded from different thermoplastic materials from the same family that can be subsequently recycled as a whole without the need of separation into its constituents. The interior component is a multi layer composite of polyester (PET) finishing fabric, a resilient layer of bicomponent polyester fiber padding composed of blend of a low melting point fibers and high melting point fibers, and a relatively stiff core layer of polyester/glass fiber composite of polyester and glass fibers. The different fibers of the core layer are blended into a thin and porous sheet which is cut to size. The cut sheets are consolidated and molded under heat and pressure into a light weight, dense and structurally strong composite. A mold charge comprises the polyester/glass fiber composite layered with the bicomponent.

Abstract: An apparatus for making a fiber batt includes an opening roll for opening fibers fed thereto; a fiber removing device directing an air stream to the opening roll for removing the opened fiber therefrom; a downwardly open fiber gathering hood; an arrangement for introducing into the hood an air stream carrying the opened fiber removed from the opening roll; an air-pervious, continuously moving fiber gathering surface covered by the fiber gathering hood; an arrangement for forcing air from the fiber gathering hood through the fiber gathering surface for depositing the fibers thereon to form a fiber batt; and an arrangement for heating the fibers with a heated air stream in a zone between the opening roll and the fiber gathering surface for effecting a heat treatment of the fibers, such as a binding of the fibers with a binding agent mixed to the fibers.

Abstract: A method of welding mitered surfaces of frame sections made of plastic material and having incorporated therein a seal of weldable material extending along the frame sections and composed of an attachment foot and at least a sealing lip, for use in windows or doors, includes the steps of heat-welding mitered surfaces and adjoining frame section zones by means of a heated mirror while covering during welding operation an inner contour of the seal by at least one form-part that is positioned in and neighboring the miter plane and has a contour which substantially complements the inner contour of the seal. Subsequently, after removing the heated mirror from the miter corner and withdrawing the form-part the area of the seal, the mitered surfaces of the frame section are squeezed together.

Abstract: An automotive interior component consisting of a resin core member having a required shape and a surface skin member for imparting a favorable surface property thereto in which a peripheral portion of the surface skin member is folded back and secured onto a reverse surface of a resin core member in a quick and reliable manner without using any bonding agent, and a device and method for manufacturing the same. By blowing hot air produced from an annular hot air supply pipe arranged along a reverse surface of the peripheral portion of the resin core member and a reverse surface of the folded back portion of the surface skin member which is combined with the resin core member as a half-finished assembly, the folded back portion of the surface skin member is thermally welded and secured to the reverse surface of the resin core member.

Abstract: A method and apparatus for extrusion coating both sides of a metal strip. A metal strip, such as aluminum alloy strip, is moved through a pre-conditioner, two extrusion dies, a post-heater and a cooling system. Both sides of the strip are coated with thin coatings of thermoplastic polymers. The coated metal strip is useful for containers, such as cans and can ends, as well as for automobiles, appliances, aerospace, construction and electrical devices.

Abstract: The process for heating a moving web, in particular a corrugated board web, in addition to a supply of heat to the one outer side of the moving web, also provides supply of heat to the other outer side of the web (5). A preheater (1) with a first heating face (3), which is associated with a movable deflection roll, is connected to a second heating face (13) connected to the deflection roll (10). With its other outer side, the web (5) is guided via this second heating face.

Abstract: An embodiment of the present invention is a method for splicing together a pair of drop irrigation hoses using splicing means internal to the pair of hoses. The pair of hoses are joined in axial alignment to form a junction with the splicing means interposed internal to each hose. A splicing means is bonded to an inside surface of each hose to fashion the pair of hoses and splicing means into a unitary structure using means for fixing the splicing means to another surface. A seal is formed using means for sealing circumferentially at the junction to create a water-tight seal.

Abstract: A method for punching an insulating film is composed of using plural divided punches having a clearance between each two of the divided punches. The clearance absorbs thermal expansion of the divided punches caused by receiving a heat from a heater. A punched insulating film is stuck to a lead frame by being pressed between the divided punches and the heater.