Abstract: The disclosure relates to a packaging container and a method of producing a packaging container for liquid contents. The packaging container has a casing produced from a web-shaped multilayer material and in the form of a sleeve, which, at one end, is connected to a bottom portion and at the other end is connected to a top portion produced from a blow molded thermoplastic material. The casing is formed by winding of the multilayer material into sleeve form and liquid-tight sealing of the material edges to a joint seam extending longitudinally of the sleeve, the top portion being manufactured in that thermoplastic material is extruded to form a hose which is blow molded into continuous top portions which are separated from one another and connected to the sleeve.

Abstract: A label foil is disclosed that is suitable for in-mold labeling, has a high stiffness, is well suited for cutting and is recyclable. The top layers of the label foil are made of polyethylene. Both top layers have about the same thickness and the core layer has a thickness that is about 5 times to 20 times that of one top layer.

Abstract: A plastic product, and method and device for producing such plastic products are disclosed. The present invention produces a plastic product having a completely sealed sidewall defining at least one cavity therein, or a plastic product filled with a filler, such as urethane foam, in the cavity, or a plastic product having both a sidewall with both open end portions and a filler contained in the cavity. The plastic forming process and device of this invention effectively produces a variety of plastic products, such as a variety of panels, pipes, channels, columns, boats, oil tanks, door panels, vehicle door panels, bumpers, vehicle hoods, and small-sized submarines, which are not produced by conventional plastic forming processes or devices.

Abstract: 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.

Abstract: The disclosure relates to a packaging container and a method of producing a packaging container for liquid contents. The packaging container has a casing produced from a web-shaped multilayer material and in the form of a sleeve, which, at one end, is connected to a bottom portion and at the other end is connected to a top portion produced from a blow molded thermoplastic material. The casing is formed by winding of the multilayer material into sleeve form and liquid-tight sealing of the material edges to a joint seam extending longitudinally of the sleeve, the top portion being manufactured in that thermoplastic material is extruded to form a hose which is blow molded into continuous top portions which are separated from one another and connected to the sleeve.

Abstract: The present invention resides in that a plurality of pre-molded inner ducts are fed to a cross-head die, and a melted outer duct is extruded around the inner ducts from the cross-head die, and then the pre-molded inner ducts and a melted outer duct are supplied into the corrugated tunnel of a molding die in which a melted outer duct is molded to have corrugations, thus producing a multiple channel duct assembly which includes a plurality of elongated inner ducts and a corrugated outer duct which encircles the inner ducts over their entire length to retain them. This method of continuously manufacturing a multiple channel duct assembly by using an extrusion molding machine with a cross-head die and a molding means has not been known heretofore.

Abstract: A process for manufacturing an article (10) by forming different portions of the article from different materials including using filler materials that are incorporated into a molten resin prior to forming the article. The selection of the resin and the filler materials impart differing properties to the article in the location where the materials were directed. The filler materials may include ceramic powders, clays, polymeric resins selected for their material properties, recycled materials, whisker materials and the like. The article may be subjected to an adhesion fluid, such as a gas or liquid, after formation in order to adhere all filler particles to the surrounding resin. If the adhesion treatment is acidic in nature, an optional step of neutralizing the article with hydroxides, carbonates or the like may be useful.

Abstract: A method of forming multi-walled plastic containers in a single blow mold. In general, the method comprises disposing at least two separate parisons simultaneously into a blow mold and forming them to shape one after another by means of a special blow mandrel or pin. A substantially hollow, cylindrical first parison may be disposed around or outside of a substantially balloon or tube shaped second parison in an initially open blow mold. After closing the blow mold, the first or outer parison is expanded outwardly so that its outer surface engages the inner surface of the blow mold to assume the shape thereof, and thereafter, the second or inner parison is blown or outwardly expanded to an extent such that its outer surface at least partially engages the inner surface of the first or outer parison. The outer and inner parisons may be formed of different materials which may desirably impart different properties such as mechanical stability and resistance to permeation of fuel vapor from the container.

Abstract: A preform for forming a hollow blow molded plastic container is provided with a closed base, a multilayer body-forming portion extending from the base, and an open neck portion that extends from the body portion. The body portion includes a co-extruded inner liner that includes (a) an innermost polymer layer, (b) at least one oxygen-scavenging layer, and (c) at least one high-oxygen barrier layer for retarding the migration of gases and moisture therethrough. An outermost layer is molded over the inner liner to form a preform. The liner and preform are formed so that the wall thickness of the individual layers can easily be varied along their lengths, however, at any given point along the length of the co-extruded liner (a) the wall thickness of the innermost polymer layer is less than 0.50 of the wall thickness of the inner liner and (b) the wall thickness of the inner liner is less than 0.25 of the total wall thickness of the preform body portion.

Abstract: An angioplasty balloon and method of manufacture are provided. The balloon has a working length and a taper each having a substantially equivalent thickness. This allows the balloon to be steered easily through vasculature to the site of a stenosis prior to inflation during an angioplasty procedure. The taper thickness in particular is achieved through use of a specially designed multi-tubular slug which is molded to form the angioplasty balloon of the present invention.

Abstract: A catheter having an inflatable member formed of a liquid crystal polymeric material. The inflatable member is formed from a blend of a minor amount, preferably less than 10%, of liquid crystal polymer with a major amount of a non-liquid crystal polymer having LCP fibers that are highly oriented in the machine direction. The aspect ratio of the liquid crystal polymeric material fibers is greater than 10, so that the polymer blend has mechanical characteristics similar to a fiber-reinforced composite with improved strength and optimal compliance.

Abstract: Multilayer shaped articles, including films, preforms and containers, and method for forming the same, having at least one layer of poly(1,3-propylene 2,6-naphthalate) and at least one layer of poly(ethylene terephthalate). Poly(1,3-propylene 2,6-naphthalate) can be co-stretched with poly(ethylene terephthalate) to form oriented multilayer structures which have superior barrier properties. The poly(1,3-propylene 2,6-naphthalate) and poly(ethylene terephthalate) layers have good adhesion and do not require an adhesive tie layer.

Abstract: A process for the production of polyamides is disclosed. In a first reaction step, suitable monomers such as caprolactam or an aliphatic aminocarboxylic acid are reacted with polyfunctional amines, which contain at least one secondary amino group, and/or with salts containing such amines and dicarboxylic acids. The reaction product is in a further process step undergoes solid phase post-condensation.

Abstract: A preform for forming a hollow blow molded plastic container is provided with a closed base, a multilayer body-forming portion extending from the base, and an open neck portion that extends from the body portion. The body portion includes a co-extruded inner liner that includes (a) an innermost polymer layer, (b) at least one oxygen-scavenging layer, and (c) at least one high-oxygen barrier layer for retarding the migration of gases and moisture therethrough. An outermost layer is molded over the inner liner to form a preform. The liner and preform are formed so that the wall thickness of the individual layers can easily be varied along their lengths, however, at any given point along the length of the co-extruded liner (a) the wall thickness of the innermost polymer layer is less than 0.50 of the wall thickness of the inner liner and (b) the wall thickness of the inner liner is less than 0.25 of the total wall thickness of the preform body portion.

Abstract: Thermoplastic multilayer composite, particularly in the form of a multilayer hose, a multilayer pipe or a multilayer container, containing at least one intermediate layer made of a molding compound on the basis of ethylene/vinyl alcohol copolymers between layers made of molding compounds on the basis of polyamide, the intermediate layer being bonded via at least one adhesion-promoting layer made of a molding compound on the basis of polyamide selected from the group of copolyamide 6/12, block copolyamide 6/12, polyamide 612, polyamide 610, a mixture of polyamide 6 and polyamide 12 with compatibilizer, a mixture of polyamide 6 and polyamide 11 with compatibilizer, with at least one neighboring layer made of a molding compound on the basis of polyamide 12, polyamide 11, polyamide 1010, polyamide 1012, or polyamide 1212.

Abstract: A blow molding part with a decorative coating is produced in a three-stage process. The blow molding part is initially produced without a coating in a blow mold tool cavity, and is then molded against the decorative coating material in a second blow-molding operation under low pressure and at a low temperature in a decorative coating cavity. The decorative coating material is heated up if appropriate and is placed in advance against a mold contour. The blow mold tool includes a middle part, which is provided between two movable side parts and can be moved or pivoted out. Mold contours of the middle part form with the mold contours of the side parts the blow mold tool cavity and the decorative coating cavity. The blow mold tool cavity has holding devices for the blow molding part. The decorative coating cavity has suction openings and heating elements for molding the decorative coating material and heating it up.

Abstract: A multi-layer thermoplastic packaging, the outer layer containing at least one filler having particles of different particle size and of a diameter ≧50 &mgr;m, to give a natural stone external appearance and a process for the preparation thereof which includes coextrusion and blowing of the inner and outer layers, to provide the packaging which can be in the form of a flask, bottle, pot or other desired shape.

Abstract: Fuel system components for vehicles may be made from polyethylene components which are typically blow molded. To inhibit fuel vapour permeation, the polyethylene is often co-extruded into a parison with the parison comprising a barrier layer. Upon trimming flash or in the mold closure itself, the barrier layer may be ruptured. Sealing of areas of discontinuity in the fuel system component to inhibit hydrocarbon vapour pass through is achieved by sealing the area of barrier discontinuity with a sealing bead which has the necessary barrier properties. The barrier properties may be inherent in the sealing bead material or in a barrier layer extruded into the sealing bead.

Abstract: The present invention provides compositions useful as a barrier layer in, for example, packaging products. The compositions generally comprise a blend of (i) a polyester resin, preferably an aromatic polyester resin such as polyethylene terephthalate (PET) and (ii) a polyamide material (e.g., MXD6). The blend optionally may further comprise (iii) an oxygen scavenging material. The present invention also provides containers (e.g., containers formed by expansion of preforms) having a multilayered body-forming portion including: a layer comprising the aforementioned blend; and one or more layers of a formable polymer composition. The present invention also provides methods of making such containers.

Abstract: A method of producing components with surface decoration, by which even difficult surface geometries can be produced with a satisfactory visible surface, includes prefabricating a sheet-like molding with a desired surface contour in a prior step. The prefabrication is carried out in a contour-defining preforming mold or in a contour-defining production mold. The prefabrication of the sheet-like molding may be carried out, for example, by spraying a material onto a surface of the separate contour-defining mold or of the production mold. The surface decoration may be coated on a rear side with a compact or expanded material and subsequently preformed.

Abstract: A method for producing an insulated container using a modified blow molding process. A multi-layer parison is created that includes inner layer, a thermoplastic foamed resin central layer, and an outer layer. The parison is clamped between halves of female mold, and a gas, e.g., air, is briefly blown into the interior of the clamped parison section to expand the parison section to substantially against the outer walls of the mold. Vacuum is applied through the mold walls to hold the clamped parison section in place, and the gas pressure is released. By removing the gas pressure, the clamped parison section is permitted to mold without internal pressures. That is, the vacuum holds the parison section in place, without air pressure crushing, or pressing against, the inner layer of the parison. In this manner, the foamed central layer is free to expand.

Abstract: An apparatus for producing hollow bodies, in particular bottles and similar containers provided with an evacuation opening, of thermoplastic includes a lower machine part (2) and a beamlike upper machine part (7). The lower machine part (2) is equipped with at least two blow molds (3a, 3b, 3c), each provided with a cavity (4). A number of blowing and calibration mandrels (8a, 8b, 8c) corresponding to the number of blow molds is disposed on the beamlike upper machine part (7) disposed above the lower machine part (2). One blow mold is assigned to each blowing and calibration mandrel. The blowing and calibration mandrels (8a, 8b, 8c) can be axially fed jointly toward the blow molds (3a, 3b, 3c) and can be moved with their calibration region into an orifice (5) of the cavity (4) until an annular shoulder (9) of the blowing and calibration mandrels (8a, 8b, 8c) comes into contact with a counterpart face (6) on the associated blow mold (3a, 3b, 3c).

Abstract: A process for the production of a container (1) comprising an outer container (2), an inner bag (3) disposed therein and a pressure equalisation opening (10) disposed in the outer container (2), and also a container (1) produced according to this process, is described, wherein firstly a pre-moulding, comprising two coaxial tubes, is first produced by co-extrusion with the help of a blow mould and with an outwardly-projecting base seam (5) being formed. The process is to form a pressure equalisation opening (10) in the outer container (2) of the container (1) without endangering the integrity of the container (1), wherein a lower wastage rate and higher productivity are to be achieved. This is attained by a process wherein the base seam (5) is partially cut off and a force which acts in the direction of the seam is introduced into the pre-moulding, which still has a temperature of 40° C. to 70°C.

Abstract: A method for fabricating synthetic-material molded parts through extrusion blow molding, produces sharp-edged, strong contours and/or undercuts in the region of break-throughs. A synthetic-material tube introduced into the blow-molding die is initially widened by pneumatic pressure, shaped and held on smooth or slightly contoured surfaces of the blow-molding die. However, strong, sharp-edged contours are shaped by mechanical pressure exercised on an outer surface of the synthetic-material tube by a shaping tool. A device for carrying out the process has a blow-molding die with a wall in which shaping slides are guided in one or more parts that can be guided in the interior of the blow-molding die and have sliding parts which can be driven independently of each other or in synchronism.

Abstract: A process for producing a plastic blow-molded part. A plastically deformable plastic parison with a first subregion and an opposite second subregion is placed between a molding element having a projecting region and a mold interacting with the molding element. A positive pressure is generated between the molding element and the first subregion and within the parison, to keep the first subregion at a distance from the molding element and to keep the first and second subregions at a distance from each other. A stretching region of the first subregion is preformed by moving the molding element in relation to an edge region in the direction of the mold and by generating a negative pressure between the projecting region and the stretching region of the first subregion. The subregions are deformed for generating a positive pressure within the parison.

Abstract: A method of forming a balloon for medical purposes comprising co-extruding in a tubular shape a base structural layer of a member selected from the group consisting oft polyamides, polycarbonates, polyesters and copolymers thereof and a heat sealable layer selected from the group consisting of polyethylene and copolymers thereof. The tubular member is then biaxially oriented by inflating the tube with a gas to a predetermined central diameter greater then the initial diameter of the tube and simultaneously heating the inflated tube to a temperature sufficient to biaxially orient the base structural layer. The member is then cooled the inflated tubular member and then elevated in temperature for a second time to the biaxially orienting temperature. The twice-heated tube is allowed to cool and the gas is withdrawn whereby the tubular member will assume a generally tubular shape and the main structural layer will remain biaxially orientated and the heat sealable layer will not be biaxially orientated.

Abstract: A method for the fabrication of synthetic-material component assemblies includes blow-molding synthetic-material components having a foam-backed decorative layer on part of their surface. Decorative material is initially pressed against a foam layer having one surface which has been heated and melted. During blow-molding of the component from an extruded synthetic-material tube, a composite decorative element produced in this way is pressed against an outer surface of the component and joined by fusion welding. The composite decorative element can either be performed in accordance with the contours of the component or have a flat structure, in which case it can be shaped, possibly with additional heating, together with the component during blow-molding.

Abstract: A boot comprising an upper portion, an outersole portion, an optional midsole/wedge portion and a shell portion, wherein the shell portion is produced by the blow molding process. The shell portion may contain a midsole/wedge element inside or outside of its volumetric shape and it may also contain a pre-molded outersole which is replaced into the blow mold. The shell portion can be produced with thickness as little as 0.25 mm and weight as low as 25 grams. The shell portion may be constructed of any material that is extrudable. The shell portion is produced with mold cavities, but no mold core. The shell portion may be flocked internally with textile fibers. A pair of shell portions can be simultaneously produced from a single extrusion of material.

Abstract: A process for producing multi-layer game ball products includes the steps of extruding an inner layer precursor as a parison in a partial melt state, forming an outer layer, introducing the inner and outer layers into a mold and expanding the parison within the mold to form the multi-layer game ball product. The outer layer may take the form of pre-cut panels vacuum supported in the mold and an intermediate layer may be provided for dimensional stability in the product. Subsequent to expanding the parison a filler such as foam may be injected into the center space for forming a core.

Abstract: Flexible belts, and electrophotographic machines that use such flexible belts, that having embedded sensor fibers that run across the belt's width. Such sensor fibers enable sensors located along the side of the belt to sense belt position and/or motion.

Abstract: For the continuous manufacture of a twin-wall pipe having a pipe socket and consisting of a smooth internal tube and an external tube, which is welded together therewith and provided with transverse grooves, two extruders are provided, which extrude an external tube and an internal tube via a joint crosshead. Switches are provided for the production of a pipe socket, by means of which the speed of the extruder is modified in such a way that the mass flow of the melt of plastic material for the production of the external tube is reduced during the production of the pipe socket and/or the mass flow for the production of the inner tube is augmented.

Abstract: A method for stretch blow molding dilatation balloons for angioplasty catheters having a significantly reduced cone thickness without sacrifice in burst strength is achieved by utilizing a mold whose cavity includes arcuate walls defining the balloon's end cones and a predetermined minimal distance from the side edges of the mold to the points where the arcuate walls intersect with a smaller diameter balloon stem portion. Utilizing this mold and providing for three longitudinal stretching sequences, one prior to, one during and one following radial expansion of the heated plastic parison, results in an improved balloon exhibiting reduced cone stiffness.

Abstract: The present invention relates to a blow molded article with a smooth appearance and to the method of making the article. More particularly, the blow molding system of the present invention utilizes a thermal cycle to eliminate certain molding defects and a non-mirrored mold cavity surface to eliminate other molding defects. The thermal cycle sets the cavity temperature to a prescribed range to eliminate spot marks and line marks. The mold cavity surface has minute concavities/convexities and thereby produces an article with minute concavities/convexities such that when the article is painted, a smooth surface is produced without the need for sanding either the mold surface or the paint surface.

Abstract: A liquid container includes a substantially prism-like outer wall provided with a substantial air vent portion and having a corner formed by 3 surfaces: an inner wall having outer surfaces equivalent or similar to inside surfaces of said outer wall and a corner corresponding the corner of said outer wall, said inner wall defining a liquid accommodating portion for containing liquid therein, said inner wall further having a liquid supply portion for supplying the liquid out of said liquid accommodating portion; wherein said inner wall has a thickness which decreases from a central portion of the surfaces of the prism-like shape to the corner, and said outer wall and and said inner wall are separable from each other.

Abstract: The invention relates to a laminated packaging material comprising a core layer of paper or paperboard and a gas barrier layer of a polyarmide blend including a condensation polymer of metaxylene diamine and adipic acid (Nylon-MXD6) and a second crystalline or semicrystalline polyamide, applied on one side of the core layer by means of co-extrusion coating. The invention also relates to a method of producing the laminated packaging material and to a packaging container which is produced from the laminated packaging material.

Abstract: A multi-lumen hose including a corrugated peripheral wall including an interior area and having an inner surface which defines a diameter, and at least one substantially planar inner partition extending from the inner surface across at least half of the diameter of the peripheral wall so as to divide the interior area into a plurality of lumen and methods of manufacturing such hose.

Abstract: Multiple parts may be molded from a single extruded parison. As the parison is extruded, it is slit vertically to divide the parison into two or more parison portions. A mold is then closed about the parison portion with a mold separator separating the mold portions. Each portion of the parison can then be formed into a separate molded part. The molding may be achieved by positive internal pressure similar to blow molding or by applying a vacuum to mold portions so that the forming process is similar to thermal forming.

Abstract: The multilayer plastic container comprises a neck portion, a body portion, adjacent the neck portion, forming a cylindrical wall, and a bottom portion adjacent the body portion and opposite the neck portion. The cylindrical wall comprises a first layer of PET, a layer of EVOH adjacent the first layer of PET and a second layer of PET adjacent the layer of EVOH. The EVOH has an average thickness which is greater near the neck portion of the container than near the bottom portion of the container.

Abstract: A multi-layer preform, includes: (a) a plastic inner liner, comprised of a cylindrical walled body, which may or may not include a tapered annular shoulder portion, and a cylindrical walled neck portion extending upwardly from the body, and (b) a molded outer layer. Prior to the outer layer being molded over the plastic inner liner, at least a portion of the liner is crystallized by a heat treatment process. The molded outer layer may include a means to receive a closure device. When the preform is at an acceptable temperature range for orientation, the multi-layer preform can be blow-molded to form a multi-layer container having improved properties.

Abstract: Oxygen scavenging barrier polyamide compositions exhibiting high oxygen scavenging capability as well as good coinjection stretch blow moldability characteristics suitable for making multilayer PET bottles with good clarity and delamination resistance are claimed in this invention. The polyamide compositions of this invention comprise a slow crystallizing polyamide blend comprising (i) an amorphous, semiaromatic polyamide homopolymer, copolymer or mixture thereof and (ii) a semicrystalline, aliphatic polyamide homopolymer, copolymer or mixture thereof wherein in the weight ratio of (i):(ii) ranges from about 99:1 to about 30:70; at least one polyamide-compatible, oxidizable polydiene; and at least one oxidation promoting metal salt catalyst. The multilayer PET bottles, made with the polyamide compositions of this invention as the barrier layer, are suitable for extended shelf-life packaging of oxygen-sensitive food and beverage products such as beer and juices.

Abstract: This invention relates to a method and a device for producing blow-molded plastic hollow bodies. The device is of an enhanced design which avoids the shortcomings of traditional blow-molding technology. The extrusion die according to this invention is adjustable for different settings to produce different, partly overlapping wall thicknesses of the parison blank in order to compensate for the insufficiencies inherent in blow-molding and to obtain a finished blow-molded product with as consistent and uniform a wall thickness as possible, with an overlay, for instance in vertical wall sections, of evenly spaced longitudinal ribs. A technical concept is introduced whereby, as a novel process, the two conventional measures used to achieve a uniform wall thickness in the finished blow-molded hollow body are complemented by an additional, third step which makes it possible to produce containers whose hollow bodies are provided with targeted, intentional and reproducible irregular wall-thickness patterns.

Abstract: A blow molded product which is generally tubular having a first and second open ends, a bellows section intermediate said first and second ends so that the product is flexible, and a skirt adjacent the second end, the skirt having an outer cylindrical outer surface and a lobed inner surface. The bellows section is formed in a blow molding operation and the skirt is formed by injection molding. The final product is formed by thermally fusing the two portions together. This process enables molding of a product with an external surface which may substantially cylindrical with an internal surface which has lobes, or other internal projections or non-cylindrical surface.

Abstract: The disclosure relates to a packaging container and a method of producing a packaging container for liquid contents. The packaging container has a casing (2) produced from a web-shaped multilayer material and in the form of a sleeve, which, at one end, is connected to a bottom portion (4) and at the other end is connected to a top portion (3) produced from blow moulded thermoplastic material. The casing (2) is formed by winding of the multilayer material into sleeve form and liquid-tight sealing of the material edges to a joint seam (9) extending longitudinally of the sleeve, the top portion (3) being manufactured in that thermoplastic material is extruded to form a hose (15) which is blow moulded into continuous top portions which are separated from one another and connected to the sleeve.

Abstract: A plastic pipe has a multiple layer wall construction including major and minor wall portions. The major wall portions are formed with first corrugations and are separated from one another by the minor wall portions which are formed with second corrugations and a bowed wall part which is of the same diameter as the first corrugations. The second corrugations are smaller in diameter than both the first corrugations and the bowed wall pipe. The wall construction is cut at the bowed wall part to produce two pipe sections which couple with one another. One of those pipe sections has an open ended bell converted from the bowed wall pipe and the other pipe section has a male spigot formed by the second corrugations of the wall construction.

Abstract: A multi-lumen hose including a corrugated peripheral wall including an interior area and having an inner surface which defines a diameter, and at least one substantially planar inner partition extending from the inner surface across at least half of the diameter of the peripheral wall so as to divide the interior area into a plurality of lumen.

Abstract: A liquid container includes a generally prism-like casing having a substantial air vent and having a corner portion formed by extensions of three sides of the prism configuration; an inner shell for containing liquid therein, the inner shell having outside equivalent or similar to inside of the casing; a liquid supply portion for supplying the liquid to outside from the liquid containing portion; a pinch-off portion where the inner shell is pinched by the casing; an integral portion where a maximum area side of the inner shell is integral with a side of the inner shell opposite therefrom.

Abstract: A container comprises a wall comprising at least one layer, the wall comprising a polypropylene having a high flexural modulus and a polyethylene chosen from low-density and very low-density polyethylenes. The container can further comprise a product in the container. The product is chosen from cosmetic products, food products, household products, and industrial chemistry products. A method of making the container includes extruding a parison having at least one layer, the parison including a polypropylene having a high flexural modulus and a polyethylene chosen from low-density and very low-density polyethylenes, and blowing the parison in a mold having at least one cavity with a geometry corresponding to that of the container to obtain the container.

Abstract: The present invention relates to a process for producing hollow plastic articles, encompassing the following steps:

Abstract: The present invention provides a p-hydroxybenzoic ester represented by the formula (1) wherein R1 represents a C6-C10 straight-chain or branched-chain alkyl group, A1 represents a C2-C4 alkylene group and n in an integer of 1 to 8, a plasticizer for at least one polyamide resin selected from nylon 11 and nylon 12 which comprises the ester, a polyamide resin composition comprising the ester and at least one polyamide resin selected from nylon 11 and nylon 12, and a polyamide resin molded article comprising the ester and having excellent high-temperature volatilization resistance and low-temperature impact resistance.

Abstract: A method for stretch blow molding dilatation balloons for angioplasty catheters having a significantly reduced cone thickness without sacrifice in burst strength is achieved by utilizing a mold whose cavity includes arcuate walls defining the balloon's end cones and a predetermined minimal distance from the side edges of the mold to the points where the arcuate walls intersect with a smaller diameter balloon stem portion. Utilizing this mold and providing for three longitudinal stretching sequences, one prior to, one during and one following radial expansion of the heated plastic parison, results in an improved balloon exhibiting reduced cone stiffness.