摘要:
Methods are disclosed for producing multi-layer peelable sheaths having formed tips, for use as medical introducer devices, e.g., sheaths for inserting a catheter or the like into a patient. The methods include the steps of preparing a first composition blend for forming an inner layer of the multi-layer sheath, preparing a second composition blend for forming an outermost layer of the multi-layer sheath, combining the first and the second composition blends into a multi-layer pre-form, processing the multi-layer pre-form for producing tubing, and forming a tip at one end of the tubing using a thermal process, thereby producing the multi-layer sheath having the inner layer, the outermost layer, and the formed tip. The methods of the present invention include adding a detectable material to the blend used for making the inner layer for facilitating external visualization of the multi-layer sheath, thereby achieving a sheath with a formed tip having no visible discoloration. The methods also incorporate a reduced sintering process for achieving an optimally cured, peelable sheath having excellent tear properties.
摘要:
Apparatus which provides a cylindrical chamber in which is contained a tool which is provided with a rotating movement for cutting up an extrudate delivered into the chamber into pieces and so that the pieces are distributed into a frozen composition mass delivered into the chamber and so that the mixture obtained is extruded through to a nozzle for passage of a composite mixture from the chamber.
摘要:
A ground color main extruder 9 which supplies a ground color resin that is to cover a strand conductor 3 is disposed. Plural stripe sub extruders 21 and 31 which supply a colored resin in a strip-like manner in a longitudinal direction of the strand conductor 3 simultaneously with extrusion of the ground color resin are disposed. Insert molds 16 and 17 are multiply disposed. While alternatingly switching over the stripe sub extruders 21 and 31 each time when a colored resin to be supplied is changed, a colored resin of a predetermined color is supplied through a path which is disposed for each of the stripe sub extruders 21 and 31.
摘要:
Multilayer polymeric shells for spas, bathtubs and shower enclosures having a textured and marbled surface layer. The shells are produced by forming by extrusion a multilayer polymeric sheet having a marbled appearing top layer, passing the sheet between rollers to impart a textured surface to the marbled top layer of the sheet, and thermoforming the sheets into the structural shells for spas, bathtubs and shower enclosures.
摘要:
A granular, ground filler of plant origin, such as kenaf fiber, is mixed into a synthetic resin to form a melted synthetic resin Ca, which is extruded from an output port 36 of a low-pressure extruder 30 as an intermediate resin layer C. A first coating material A and a second coating material B are superimposed on the two surfaces of the intermediate resin layer C. Thereafter, both coating materials A and B are pressed and adhered to the melted intermediate resin layer C by a roller press 50.
摘要:
The present invention relates to membranes including a barrier layer which includes a blend of one or more aliphatic thermoplastic urethanes and one or more polar and partially crystalline materials. Under multi-layered embodiments, the barrier layer is laminated to at least one other layer formed from thermoplastic urethane, wherein the membranes are characterized in that hydrogen bonds are formed between the first layer of thermoplastic urethane and the second layer from the blend of aliphatic thermoplastic urethane and a copolymer of ethylene and vinyl alcohol.
摘要:
Candy mass including sugar and starch syrup is passed through a nozzle to which twisted-blades are mounted by a pair of a piston and a deposit cylinder for deposit, the candy mass being poured into a die. Consequently, candies having a beautiful marble pattern can be produced continuously.
摘要:
An apparatus for manufacturing moldings by which clear colors and patterns can be brought out without a remarkable lowering of strength. Immediately before delivery to a metal mold, outer resin material positioned on the main cylinder inner wall side is put in the molten state, and inner resin material positioned on the main screw side is controlled to be from the softening temperature to the melting temperature both inclusive to be extrusion-molded as they are. The inner wall of the main cylinder is expanded where the outer resin material is received to help the outer resin material be thrown in smoothly.
摘要:
An extruding machine for making multi-color mesh belts includes an injection block which has a single material feeding inlet and a material feeding tube which has a plurality of equally spaced material feeding passages. Each feeding passage has a color injection opening which engages with a color injection device. The formed mesh belts may have strips of different colors. The bottom end of the feeding tube may engage with a dividing block for controlling melting degree of the injecting color material.
摘要:
A method of manufacturing no-stick multi-color incense is to mix wood powder and an adhesive in powder form evenly and then the mixture is added into a liquid containing pigment and fragrance, stirred into a one-color glutinous paste and compressed into a single-color chunk by machines. The same procedures above-mentioned are repeated several times to obtain chunks with different colors. These mono-color chunks are cut into small cubes. The cubes are mixed together, piled on top of each other with different colors and then extruded by extruding machine to form incense with multiple colors. After drying, no-stick multi-color incense is obtained.