A parison for being blow molded into a medical balloon for a catheter includes a first tubular layer having a functional modification and a second tubular layer adapted for bonding with the first tubular layer to form the blow molded balloon. Related methods are also disclosed.

Disclosed are bio-based mono-ethylene glycol (MEG) compositions containing from about 1 ppm to about 5000 ppm of at least one C3-C12 1,2-diol, bio-based polyester compositions made therefrom, and methods of making the same are disclosed. Preforms and blow-molded polyester containers prepared from the bio-based MEG and polyester are described.

A resin composition comprises: a modified EVOH (A) that is represented by a following formula (I), has contents (mol %) of a, b, and c based on the total monomer units satisfying following formulae (1) through (3), and has a degree of saponification (DS) defined by a following formula (4) of 90 mol % or more; and inorganic oxide particles (B), wherein a content of the inorganic oxide particles (B) is from 5 to 5000 ppm. Such a resin composition is improved in adhesion to a resin other than EVOH, secondary processability, and flexibility without decreasing the performances originally possessed by EVOH, such as gas barrier properties, transparency, flavor retention, solvent resistance, and oil resistance. Accordingly, the resin is preferably used as a molded article, a film, a sheet, a heat shrinkable film, a thermoformed article, a multilayer structure, a coinjection stretch blow molded container, a fuel container, and the like. ##STR00001##
18≤a≤55  (1)
0.01≤c≤20  (2)
[100−(a+c)]×0.9≤b≤[100−(a+c)]  (3)
DS=[(Total Number of Moles of Hydrogen Atoms in X,Y, and Z)/(Total Number of Moles of X,Y, and Z)]×100  (4).

A biobased polymer composition for pharmaceutical articles includes a low density polyethylene, in which at least a portion of ethylene is obtained from a renewable source of carbon. The biobased polymer composition exhibits an Emission Factor ranging from −3.5 to 0 kg CO2.sub.e/kg of the biobased polymer composition, and is biocompatible for use in pharmaceutical packaging. A pharmaceutical article includes the biobased polymer composition and has a volume ranging from 0.04 ml to 10000 ml. A method for forming a pharmaceutical article includes extruding the biobased polymer composition at a temperature ranging from 100 to 250° C. and at a screw speed ranging from 20 to 100 rpm. A method for producing a biobased polymer composition includes polymerizing ethylene at least partially obtained from a renewable source of carbon to form a low density polyethylene.

The present invention relates to molded foam having no hollow space caused in a plate-shaped portion. The molded foam comprises a tube body and a plate-shaped portion joined to the outer side of the tube body. The expansion ratio of the molded foam is lower than two, and a value of a thickness B/a thickness A as a relationship between the thickness A of the tube body at the periphery of a point joined to the plate-shaped portion and the thickness B of the plate-shaped portion is less than 2.82.

A barrier for injection molding, the barrier including a manganese (Mn) catalyst and an oxygen barrier. In embodiments, the oxygen barrier comprises MXD6. Such barriers may be included with a polymer to form a composition used in an injection process. In other embodiments, a barrier includes a transition metal catalyst, an organic compound, and a radical initiator. In embodiments, the radical initiator comprises one or more azo-compounds or peroxides. Plastic preforms and containers that are injection molded with such barriers/compositions are also disclosed.

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 skin-covered foamed molded article having excellent lightweight property, bending rigidity, and favorable dimensional stability, which includes: a skin material composed of a hollow molded body produced by blow-molding an extruded parison; and an expanded bead molded article located inside the skin material, wherein the skin material has an average wall thickness of from 1.0 mm to 5.0 mm, the skin material includes a glass fiber-reinforced polypropylene-based resin containing glass fiber in a range of from 5 mass % to 30 mass %, the glass fiber has a weight-average fiber length of from 0.4 mm to 1.5 mm, the expanded bead molded article includes a polypropylene-based resin, the peeling strength between the skin material and the expanded bead molded article is 0.1 MPa or higher, and the longitudinal linear expansion coefficient of the skin-covered foamed molded article (100) at from 23° C. to 80° C. is 7×10−5/° C. or lower.

A method enabling the selection, modification and/or creation of polymer materials which can provide improved response to the application of local shear and/or extensional deformation inside the polymer melt in manufacturing technologies including injection molding, injection stretch blow molding, direct injection, extrusion blow molding, sheet extrusion, thermoforming, etc., is provided. A method for manufacturing a polymer article includes injecting or extruding molten polypropylene, polyethylene or polyester based polymer for converting it into semi-final shape while applying shear and/or extensional deformation on the polymer melt. Applying shear and/or extensional deformation on the polymer melt includes selectively modifying the flow path of the molten semi-crystallizable polymer as a function of local pressure profile over at least part of the flow path. Local pressure profile is a function of optimized response of the polymer melt to the applied local shear and/or extensional deformation over at least the part of the flow path.

A molded plastic structure may comprise a tabletop with an upper surface and a lower surface. A lip may extend downwardly relative to the lower surface of the tabletop, and the lip may include an outer surface and an inner surface. An inwardly extending portion may extend inwardly from the inner surface of the lip. A frame may be connected to the table top and the frame may include a side rail of a frame. The side rail may include a receiving portion that receives the inwardly extending portion. The side rail may also include a portion that supports the lower surface of the table top and a portion that supports the lip.