This disclosure provides new methods to characterize and relate residual stress and orientation imparted to the injection molded polymeric preform with orientation and residual stress in the resulting blow molded bottle. The method developed allows one to define and map the coupled thermal stress histories of both processes to define applicable preferred mutual processing windows for both preform and bottle molding processes. Stretch blow-molding parameters are developed using the disclosed method.

This disclosure provides new methods to characterize and relate residual stress and orientation imparted to the injection molded polymeric preform with orientation and residual stress in the resulting blow molded bottle. The method developed allows one to define and map the coupled thermal stress histories of both processes to define applicable preferred mutual processing windows for both preform and bottle molding processes. Stretch blow-molding parameters are developed using the disclosed method.

A continuously rotating, non-symmetric preform feed, stretch-blow-moulding machine dedicated to the stretch-blow-moulding of containers from non-symmetric injection moulded preforms; the non-symmetric preforms including an integral handle extending from a first junction point to a second junction point on a body of the preform; the body of the preform and the integral handle constituted from the same material.

The present application relates to a method for producing a catheter tube. The method including sucking gas from a second end 43 of a tubular body 40 while introducing pressurized gas into a lumen 41 of the tubular body 40 from a first end 42 of the tubular body 40, so that an internal pressure is applied to the lumen 41 of the tubular body 40 by introducing the pressurized gas, and the tubular body 40 is delivered in a direction from the first end 42 to the second end 43 by sucking the gas from the second end 43 of the tubular body 40.

The present application relates to a method for producing a catheter tube. The method including sucking gas from a second end 43 of a tubular body 40 while introducing pressurized gas into a lumen 41 of the tubular body 40 from a first end 42 of the tubular body 40, so that an internal pressure is applied to the lumen 41 of the tubular body 40 by introducing the pressurized gas, and the tubular body 40 is delivered in a direction from the first end 42 to the second end 43 by sucking the gas from the second end 43 of the tubular body 40.

This disclosure provides new methods, compositions, containers, preforms, and designs for refillable carbonated soft drink bottles having improved caustic stress cracking resistance. The method of this disclosure combine the use of PET-based co-polyester resin that incorporates a cyclic hydrocarbon diacid co-monomer and/or a cyclic hydrocarbon diol comonomer, with a bottle design incorporating a petaloid base, for unexpectedly enhanced performance.

A plural preform assembly having nested preforms with an inner preform and an outer preform. The preforms are sealably joined together, defining a volume between the preforms. Propellant is disposed in the volume between the preforms. The preforms are later blow molded to provide a bag in bottle, bottle in bottle or similar container. The propellant charge is already present when blow molded, preventing the need for a later propellant filling step.

To provide a composite preform that can ensure that worsening of the appearance of a surface of a plastic member caused by near-infrared heating prior to blow molding is effectively prevented and that an inner preform is efficiently heated. The composite preform of the present invention includes a preform and a heat-contractive plastic member, the preform including a mouth part; a trunk part linked to the mouth part; and a bottom part linked to the trunk part, and the heat-contractive plastic member being disposed so as to surround the outside of the preform and including at least a colored layer that contains a resin material and a colorant, wherein the heat-contractive plastic member has a near-infrared transmittance of 50% or higher.

A plastic container manufactured from a preform with a mass share of at least 80% polyester and possibly an additive from the group consisting of dyes, fillers, catalysers, additives and lubricative additives. The plastic container comprises a container neck and a container shoulder which connects with the container neck and merges into a container body closed by a container base. The container shoulder, the container base and the container body are exclusively reshaped by a 2-stage stretch blow moulding method. The polyester is a copolyester and comprises groups which originate from the monomers cyclohexanedimethanol (CHDM) and/or monoethylene glycol (MEG), terephthalic acid (TPA) or its derivatives and isophthalic acid (IPA) or its derivatives. At least a part-region of the container body and/or of the container shoulder comprises a sharp edge with a radius of less than 0.5 mm. A method of manufacturing the plastic container is also described.

The invention relates to a plastic container which is stretch blow-molded from a preform and which comprises a container body having a container neck attached thereto, on which container neck there is provided an outlet opening, wherein the container body has a second opening closed by a weld seam. The container is made from a copolyester. The wall of the stretched container body has a stretching ratio relative to the wall of the unstretched container neck in the region of the at least one weld seam of more than 6:1. After the welding, the stretched container body has a density increase relative to the unstretched container neck in the region of the at least one weld seam of less than 0.06 g/cm.sup.3.