Abstract: A process for pressurization of a thin-walled container, designed to contain a flat liquid, includes the following stages: producing a thin-walled container by generating residual stresses, filling this container under cold conditions with the flat liquid, sealing the container after filling, and heating the wall of the container, without raising the temperature of the liquid, to reach the temperature point for release of the stresses so as to generate a pressurization of the interior of the container. The thus obtained container is also described.

Abstract: A conditioning station for conditioning a blow mold preform which includes a heating element for the base of the preform. The conditioning section may also include other heating elements for heating a variety of locations of the preform. The elements are generally arranged so that at least one heat ring is arranged below the preform. The lower preform will generally have a reduced diameter compared to the circumference of the preform. There can also be an element in a moveable position which can adjust position about the side walls of the preform.

Abstract: Medical device balloons are formed from a tubular parison by a process or apparatus which establishes a controlled location (initiation zone) on the parison where radial expansion is initiated. Initiation within the initiation zone is achieved by heating the parison in that location to a higher temperature than the remainder of the parison for at least a portion of the blowing time. A variety of apparatus configurations are provided, some of which allow for the size and location of the initiation zone to be readily reconfigured. Balloons can also be modified, post-blowing, using heating apparatus and methods described.

Abstract: The present invention relates to a process for blow molding a polyethylene container comprising the steps of: a) providing a solid preform made from a polyethylene material having a melt flow index from 0.01 to 10.0 g/10 minutes, wherein the preform comprises a neck region, side walls and a base region, and wherein the side walls between the neck region and the base region have substantially straight and parallel outer walls; b) reheating the preform so that the maximum temperature difference between the hottest and coldest regions of the side walls and the base region of the reheated preform is less than 4° C.; c) transferring the reheated preform to a blow mould; d) stretching the preform at a pressure below 10 bars; and e) increasing the pressure within the reheated preform so as to cause the walls of the stretched preform to expand to the shape and dimensions inside the blow mould.

Abstract: A device and a method used to temper preforms in the manufacture of bottles, in which a tempering device is provided to selectively and directly temper the preforms, and is inserted into preforms. The method provides that the preforms are directly tempered from the inside.

Abstract: A method of making a plastic container having a body and a finish with at least one external thread includes injection or compression molding a plastic preform having a body and a finish with at least one external thread, blow molding the body of the preform to form the body of the container, and either prior to, subsequent to or both prior and subsequent to blow molding the container body, expanding the injection or compression molded preform finish to form a container finish having at least one injection or compression molded external thread. In the preferred embodiments of the invention, the finish is expanded after the container body is blow-molded. The invention can be implemented to expand a narrow-neck preform or container finish to a wide-mouth preform or container finish.

Abstract: The present invention provides an improved method and materials for forming biodegradable containers that can hold food products in dry, damp or wet conditions and provides the biodegradable containers prepared according to the disclosed process. The containers are produced through the use of a pre-gelled starch suspension that is unique in its ability to form hydrated gels and to maintain this gel structure in the presence of many other types of materials and at low temperatures.

Abstract: The present invention relates to a process for making a container having an integral handle, comprising the steps of: a) providing a preform (6) in a mould cavity (1); b) stretch-blow moulding the preform (6) to form an intermediate container (8) which comprises at least one, preferably two, convex bubble(s) (9); c) deforming the or each convex bubble (9) by means of an inwardly moving plug (5) to form one or more concave gripping region(s), whilst maintaining the pressure within the intermediate container (8) above 1 bar and whilst the temperature of the material in the gripping region of the intermediate container is maintained at a temperature between the glass transition temperature, Tg, and the melt temperature, Tm; d) releasing excess pressure within the container, preferably prior to withdrawing the plug (5) from within the container; and e) ejecting the finished container from the mould cavity (1, 3).

Abstract: A container made by reheat stretch blow molding process comprises a poly(ethylene terephthalate) copolymer including levels of diethylene glycol lower than that generated as a byproduct in conventional resin manufacturing process and minor amounts of naphthalenedicarboxylic acid resulting in containers which exhibit enhanced mechanical properties. Methods for making the contains and hot filling the containers are also disclosed.

Abstract: The invention is generally directed to baby bottles and other articles produced by blow molding from polymeric materials having glass transition temperatures ranging from 100° C. to 130° C., as well as to processes for producing them. These articles can be exposed to boiling water and can be produced by using a suitable combination of a stretch ratio of less than 3 and a preform temperature at least 20° C. greater than the glass transition temperature (Tg) of the polymeric material.

Abstract: There is provided a method of making a balloon having a differential thickness. The method uses a raw tube composed of a thermoplastic polymer which is placed in an asymmetrical mold. The tube is preheated in the mold to a temperature sufficient to soften the material of the tube and inflated with a gas to generally uniformly stretch the material of the tube while allowing the tube to retract lengthwise, thus forming a balloon. The resulting completed balloon has a differential wall thickness wherein the upper region has a thickness of from about 15 to about 30 micrometers and the lower region has a thickness of from about 5 to about 15 micrometers.

Abstract: A multiplayer perform having at least a medium or intermediate gas barrier layer is prepared in advance by the injection molding of this perform in a predetermined shape that corresponds to the shape of a finished molded product. The body portion of this perform is heated to a blow moldable temperature. The heated perform is set in a primary blow mold (12), and is blow molded in the biaxial orientation to give a primary molded intermediate (5). The primary intermediate (5) is then heated to deform it forcibly by thermal shrinkage and thereby to give the secondary molded intermediate (6). The shrunken secondary intermediate (6) is set in a secondary blow mold (13), and is subjected to the secondary blow molding in the biaxial orientation to obtain a finished molded product, which is fixed thermally to give heat history to the PET resin.

Abstract: A catheter having an elongated shaft with a tubular member which forms at least a portion of the shaft and which is formed of a biaxially oriented thermoplastic polymeric material, and a method of forming the catheter shaft by radially and longitudinally expanding the tubular member to biaxially orient the polymeric material. A catheter of the invention has an improved combination of low bending stiffness, high rupture pressure, and high tensile strength, for improved catheter performance.

Abstract: Apparatus and method for making a molded plastic article having a stretched and crystallized neck finish. In one embodiment, a series of platforms are carried by a conveying apparatus for transporting a series of molded plastic articles along a predetermined path of travel through one or more treatment stations. At a finish widening station, the molded article, having a relatively wide and thin-walled blow-molded body portion, and a relatively narrow and thick-walled unexpanded neck finish portion, is positioned to enable insertion of a mandrel into an open top aperture of the finish portion to widen the finish. The mandrel may include a lower heated tapered portion for expanding the finish, and an upper cooled body portion on which the expanded finish may be cooled. The article may then be sent to a finish crystallizing station having a heating device that heats the widened finish portion for a time and temperature selected to crystallize at least a portion of the widened finish.

Abstract: A method for producing bottle-type containers made of a synthetic resin, e.g., polyethylene-terephthalate resin, includes a heat treatment step for heating and crystallizing a neck portion of a perform corresponding to a neck portion of a container. In a first stage of the heat treatment step, the neck portion of the perform is temporarily heated to a temperature below a melting point of the synthetic resin, e.g., approximately 200° C. to 230° C. in the case of polyethylene terephthalate resin. In a subsequent second stage, the neck portion is maintained at a temperature within a range in which crystallization of the synthetic resin is promoted, e.g. approximately 170° C. to 195° C. in the case of polyethylene terephthalate resin.

Abstract: A finish on a hollow plastic preform or container includes a neck that is at least partially of crystallizable polymer construction and is at least partially crystallized, and a finish ring externally secured over the neck. The neck preferably is of molded plastic construction, and preferably is stretched subsequent to molding but prior to external securement of the finish ring. In the preferred embodiments of the invention, the preform or container has an integral body, and the neck is integrally molded with the body. The finish ring preferably has at least one external thread for securement of a closure to the container after molding.

Abstract: Medical device balloons are formed from a tubular parison by a process or apparatus which establishes a controlled location (initiation zone) on the parison where radial expansion is initiated. Initiation within the initiation zone is achieved by heating the parison in that location to a higher temperature than the remainder of the parison for at least a portion of the blowing time. A variety of apparatus configurations are provided, some of which allow for the size and location of the initiation zone to be readily reconfigured. Balloons can also be modified, post-blowing, using heating apparatus and methods described.

Abstract: A process is provided for producing a hollow member having a wall thickness, in a cross section orthogonal to the longitudinal direction, that varies in the longitudinal direction, the process including a heating step of heating a tubular material (Pa) so that the tubular material (Pa) is given a temperature variation in the longitudinal direction, and a stretching step of axially stretching the tubular material (Pa) that has been heated in the preceding step. In this way, a hollow member having a cross-sectional wall thickness that is variable in the longitudinal direction can be easily produced.

Abstract: A solid outwardly projecting flange is formed on the side wall of a blow-molded article by providing a blow mold having a circumferential groove that is filled by flowable thermoplastic during a blow cycle. The mold includes a heating system locally disposed adjacent the groove for heating the walls of the groove so as to heat the thermoplastic in this region, thereby reducing the viscosity of the thermoplastic so that it more-readily flows into and completely fills the groove. The mold can also include a cooling system disposed locally adjacent the groove for cooling the flange of the blow-molded article prior to ejection of the article from the mold.

Abstract: A method of fabricating a formed object, comprising the steps of printing a desired high quality photo or near photo like image on a forming material at a resolution substantially equal to the resolution of an original digital image used to form the high quality image, and forming the formed object by a forming process in which the temperature and pressure across the object are varied.

Abstract: A process for producing a fiber-reinforced molded article and the resulting article such as a cantilevered battery tray. In the process, thermoplastic material in its solid state having a melt flow index above 25 g/10 minutes is fed into a suitable processing machine simultaneous with the addition of reinforcing fibers having a length of at least 0.375 inch or greater and sized with a material such as polyurethane, polyurea, and isocyanate derivatives thereof. The introduced materials are subjected to orientational agitation such that the reinforcing fibers are filamentized in an essentially homogeneous dispersion throughout the solid polymeric material. Once filamentization and dispersion are achieved, the resulting admixture is subjected to knead melting operations for an interval sufficient to achieve melting of the polymeric material introduced into a suitable plasticizing apparatus where the introduced material can be subjected to suitable knead melting operations.

Abstract: A thin-walled polymeric component that may have a selected complex shape, and a method of forming the component. The method includes heating a portion of a polymeric film to a selected malleable temperature, and forming a protrusion in the heated portion while it is malleable. The protrusion defines a protrusion having a first shape. The method also includes positioning a forming tool in the protrusion's interior and drawing a partial vacuum from within the protrusion so as to exert a force on the protrusion and move the protrusion's sidewalls inwardly into engagement with the forming tool. As the partial vacuum is drawn, the protrusion moves to a second shape that may be different than the first shape and that closely conforms to the selected shape of the forming tool. The protrusion is cooled below the malleable temperature and the forming tool is then removed.

Abstract: A plastic carafe includes a body portion having an enclosed base defined by a plurality of upstanding posts and a plurality of panels separating the posts from one another. The carafe further includes a neck portion having a blown finish at the top of the carafe that defines a wide-mouth. A shoulder portion transitions the posts and panels to the neck portion.

Abstract: An apparatus for molding balloon catheters is disclosed. The balloon may be molded by providing a polymeric tube within a mold having an interior cavity in the shape of the desired balloon. Microwave energy, which may be generated by a gyrotron, may then be directed toward the mold, to heat the polymeric material without heating the mold. Once heated, pressurized fluid may be injected into the tube to blow the polymeric material against the interior cavity whereupon the material can cool to form the balloon or can be further heatset by additional microwave energy and be cooled to form the balloon.

Abstract: A method of making a polyester container having an enhanced level of crystallinity in the sidewall while maintaining a low level of crystallinity in a thickened base portion. The container is particularly useful as a refillable container which can withstand higher caustic wash temperatures and exhibits reduced flavor carryover, or as a hot-fill container. According to the method, a sidewall-forming section of a preform is initially expanded, heated to contract and crystallize the same, and than reexpanded; a base-forming portion of the preform is shielded from the heat treatment and is expanded either before or after the heat treatment step.

Abstract: Improve the strength of the stretch blow receptacle and make the heat resistant treatment easier, by making the receptacle wall cross-section multi-layered in view of crystalline density, and the crystalline density of the surface layer high density. The inventions concerns a thin plastic receptacle 2 molded by stretch blowing of a bottomed preform 1 in the longitudinal and transversal directions. The wall cross-section is composed of inside and outside surface layers 2a whose crystalline density is high by stretching, a core layer 2b presenting a lower density than the surface layers 2a, and an intermediate layer 2c presenting a graduated density between both layers 2a, 2b.

Abstract: A method of making a plastic container having a body and a finish with at least one external thread includes injection or compression molding a plastic preform having a body and a finish with at least one external thread, blow molding the body of the preform to form the body of the container, and either prior to, subsequent to or both prior and subsequent to blow molding the container body, expanding the injection or compression molded preform finish to form a container finish having at least one injection or compression molded external thread. In the preferred embodiments of the invention, the finish is expanded after the container body is blow-molded. The invention can be implemented to expand a narrow-neck preform or container finish to a wide-mouth preform or container finish.

Abstract: Method and apparatus for in-mold handle attachment, wherein a portion of a blow-molded container is formed about a retaining member on a handle during blow molding. After forming the container portion about the retaining member, a cooling medium is directed at the location of the container portion in order to accelerate the cooling rate at the container portion. There is achieved at least one of an improvement in the security of the attachment of the handle to the container, and a reduction in the blow-mold processing time.

Abstract: The invention relates to a method for producing tubular containers with an open filling opening and with an end that is provided with a seal. The inventive method comprises the following steps: separately producing a preform with a neck with definitive dimensions and a tubular body with smaller dimensions than the definitive form, the tubular body containing the open filling opening; fixing the preform that is produced to a drawing head by its neck and subjecting it to at least one partial heating process; introducing the heated preform that is attached to the drawing head into the inside of a multi-part closed blow mold in such a way that the open filling opening is air-tightly held at the lower end of the blow mold; fitting a blow nozzle to the filling opening of the preform.

Abstract: A method of preventing delamination of multiple layers of an oriented polymer container having an opening defined by the multiple layers comprising a bi-axially oriented multilayer polymer container having an opening defined by a perimeter at which the multiple layers are exposed; heating the perimeter until workable; providing a curling die; feeding the multilayer perimeter into the curling die to curl the perimeter sufficiently to inhibit delamination of the layers and a container when so made.

Abstract: Provided are scratch-resistant blow moldings of crystalline resin having good surface gloss of at least 80% and high surface hardness of at least HB. A crystalline resin melt parison is blown in a blow mold into a blow-molded article, where the temperature of the inner wall of the mold falls between 20° C. lower than the crystallization temperature of the crystalline resin and 5° C. lower than the melting point of the crystalline resin; then, a pressure fluid is introduced into the pinched parison; then the mold is heated to a temperature lower by 10° C. than the melting point of the crystalline resin and a temperature below the melting point of the crystalline resin.

Abstract: A plastic blow molded container having a central vertical axis constructed in accordance with the present invention includes a cylindrical upper rim, an oriented neck portion, a lower body portion, and a closed base portion. The upper rim of the container includes a top surface having a planar inner edge and an outer edge. The inner edge is generally flat and perpendicular to the vertical axis of the container and the outer edge may be curled or curved to provide additional rigidity. The oriented neck portion depends from the upper rim and includes a means to accept a closure, such as a set of integral threads. When viewed in vertical cross section, the outer vertical line formed by the outer axial points of said means to accept a closure is substantially parallel to the vertical axis of the container. The lower body portion is generally cylindrical over the majority of its vertical length. The closed base portion supports the container and depends from the lower body portion.

Abstract: Ethylene (co)polymers each having specified values of (a) density, (b) molecular weight distribution (Mw/Mn), (c) relationship between die swell (DS) and shear rate (&ggr;) in a region of shear rate ({dot over (&ggr;)}), (d) relationship between stress (&sgr;) and maximum stress (&sgr; max) in a stress-strain curve in uniaxial stretching, (e) the ratio of sample diameter to initial sample diameter and the time for sample breakage during uniaxial stretching under a constant tension, blow molding process in which the thickness of a parison is adjusted by using the said ethylene (co)polymer, and the method of improving fire resistance in moldings, laminates and hollow moldings made by using the same.

Abstract: The disclosure relates to a method and an apparatus for producing a sterile packaging container from a thermoplastic blank or preform which, during stepwise displacement between different processing stations (A-H), is subjected to a first heating to a temperature suitable for a subsequent sterilization with the aid of a chemical sterilization agent in gas form. A subsequent, additional heating stage imparts to the blank the desired moulding temperature, whereafter the blank, after displacement to a blow moulding station, is blow moulded to the desired configuration with the aid of mould halves (9) surrounding the blank. Hereafter, the blank is displaced to a filling station (E) in which it is filled with the desired contents in order thereafter finally to be sealed with the aid of a wafer (17) and discharged out of the apparatus according to the present invention.

Abstract: A method of molding a hollow, reinforced molded plastic article. A preform is provided in the shape of the article to be molded. The preform comprises randomly commingled, short lengths of thermoplastic and reinforcing fibers loosely bonded together. A core is provided within the preform and may either be a flexible inflatable core which may be removed later or a thermoplastic liner. The preform is placed in a mold and heated to fuse the thermoplastic while a pressurized liquid coolant is circulated within the core.

Abstract: The invention provides a highly heat-stable polyester container and a method of manufacturing the polyester container, which can be treated by retort sterilization at a high temperature after filling food, a drink or the like in the container and sealing off it, and which has superior heat stability enough to prevent deformation and whitening due to heat shrinkage in a bottom portion of the container even when treated by the retort sterilization. In the polyester container, a barrel portion and a bottom portion of the container are heat-set, and at least the bottom portion of the container has an endothermic peak on a DSC curve in the range of not lower than about 150° C. but not higher than a melting start point.

Abstract: A method for inspecting the material distribution of a sequence of stretch blow molded containers or other articles in a continuous production process, by providing injection molded parisons, each parison having at least one indicator, typically two or more indicators, for detecting material distribution at a predetermined position along the axial extent of the parison. Each of the parisons is subjected to a heating stage in the continuous production process, generally by exposure to infrared heating. Each heated parison is then subjected to a blow molding process, which can be a stretch blow molding process, so that each material distribution indicator is transformed to a corresponding position along the axial extent of the blow molded article. A detector is positioned to detect the location of each indicator on each blow molded article from a given mold in the production process.

Abstract: The present invention relates to an elastic woven or knitted fabric that has an elastic yarn comprising an organic synthetic macromolecule disposed in at least part thereof, and has the following physical properties:

Abstract: The present invention is a unique manufacturing process that includes extruding a product shape through extrusion equipment, then using a blow molding process, preferably in-line, on a portion of the extruded product shape to further shape the product. In one preferred embodiment the product shape is a post and the further shaping of the post results in a decorative end that previously had to be assembled to the post but now is able to be formed in the post as a one-piece product, instead of a two-piece construction.

Abstract: The process is used for tempering preforms made of a thermoplastic material; the preforms are to be blow molded. The preforms are provided with a temperature profile along a circumference. The temperature profile is generated by differentially heating strip-shaped regions, which extend in the direction of a longitudinal axis of the preform. A step-by-step tempering for the purpose of temporally sequential thermal conditioning of different regions of the preform is carried out with movement phases and rest phases. A carrier device is rotated by the interactions of a gear and a matching gear for initiating rotational movements. The preform is moved, motionless with regard to the rotational direction, through the tempering zone at least along a portion of the transport path before the start of the engagement of the gear with the matching gear.

Abstract: A method for producing a heat set plastic container including: providing a mold cavity having sidewall surfaces and base surfaces; providing a plastic preform within the mold cavity; expanding and stretching the preform into conformity with the sidewall surfaces and the base surfaces to form a plastic container having a sidewall and a base; and inducing crystallinity in the base of the plastic container by applying heat from the base surfaces of the mold cavity to the base of the plastic container and by applying heat from an interior portion of the plastic container to an interior surface of the base of the plastic container.

Abstract: This invention relates to the post-extrusion processing of extruded profiles in an economic manner. The first process step involves heating at least a portion of the extruded profile in a preheated profile heating means to a first temperature at which the essentially linear profile becomes formable or pliable or bendable, yet which still has at least some degree of structural integrity at this point which permits it to be physically manipulated without compressing the profile by the application of external pressure or by the weight of gravity itself. This first temperature is less than a subsequent second temperature, at which the profile becomes melt processable effecting radial expansion under pressure or melt fusion under pressure. At least one end of the profile remains unheated, and preferably, two ends remain unheated.

Abstract: A method for producing a biaxially oriented, heat set plastic container, including the steps of providing a plastic preform within a mold cavity; expanding and stretching the plastic preform into conformity with the surfaces defining the mold cavity to form a biaxially oriented plastic container; inducing crystallinity in the plastic container by using convection heat transfer to heat a surface of the plastic container to a temperature of at least 120° C.; and removing the plastic container from the mold cavity. The PET containers produced by the method have an average sidewall crystallinity greater than about 30%, which allows the PET container to maintain its material integrity during any subsequent pasteurization or retort process of the contents in the PET container, and during shipment of the PET container.

Abstract: A method for producing a biaxially oriented, heat set plastic container, including the steps of providing a plastic preform within a mold cavity; expanding and stretching the plastic preform into conformity with the surfaces defining the mold cavity to form a biaxially oriented plastic container; inducing crystallinity in the plastic container by using convection heat transfer to heat a surface of the plastic container to a temperature of at least 120° C.; and removing the plastic container from the mold cavity. The PET containers produced by the method have an average sidewall crystallinity greater than about 30%, which allows the PET container to maintain its material integrity during any subsequent pasteurization or retort process of the contents in the PET container, and during shipment of the PET container.

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 of making a polyester container having an enhanced level of crystallinity in the sidewall while maintaining a low level of crystallinity in a thickened base portion. The container is particularly useful as a refillable container which can withstand higher caustic wash temperatures and exhibits reduced flavor carryover, or as a hot-fill container. According to the method, a sidewall-forming section of a preform is initially expanded, heated to contract and crystallize the same, and than reexpanded; a base-forming portion of the preform is shielded from the heat treatment and is expanded either before or after the heat treatment step.

Abstract: A paper composite for realizing packages in three-dimensional form having a layer of yieldable paper with a degree of yieldingness in any direction not less than 10% and impermeablilizing film having a yieldingness compatible with yieldable paper. A method for realizing packages where a leaf of composite is faced to a cavity of at least a mould, the leaf being bounded in correspondence of a continuous edge of the cavity, and subsequently tangentially stretching the leaf of composite to adhere to an inner surface of the cavity to obtain a concave valve. The valve has the shape of the cavity. The package obtained is a concave container having a closure film applied to the filling, and may have two concave valves joined together along the facing edges.

Abstract: A high-temperature, non-catalytic, infrared heater is formed within a housing having a bottom and at least one side lined with a refractory material. The burner includes a burner surface area and is positioned within the housing. A re-radiating surface is positioned above the burner and comprises a mesh having a re-radiating surface area greater than the burner surface area with the re-radiating surface operating between approximately 400° F. and 2200° F.

Abstract: A machine and method for blow molding a polyester bottle for carbonated beverages with an internal web structure positioned between two hand-grip depressions. The machine and method uses an injection-molded preform having a web feature and maintains the web of the preform in a precise position during heat-treatment and eventual blow molding into the bottle. Heat-treatment involves an oven capable of heating and cooling selected regions of the preform by using a combination of shields, heat energy reflective surfaces, and cooling airflows. Bottle blow molding involves precise placement of the preform relative to hand-grip surfaces in a blow mold cavity and cooling airflow of the internal web structure before bottle removal.

Abstract: To provide a method for producing a molded crystalline resin article which enables a higher crystallization degree and to mass-produce the molded crystalline resin articles. The method comprises molding a molded resin article from a thermoplastic resin containing a crystalline resin followed by performing a heating process to obtain a molded crystalline resin article having a surface layer whose crystallization index is 0.9 or higher when determined by IR spectrometry. It is preferable that the temperature of the heating process is within the range of 20° C. lower than the crystallization temperature of the molded resin article to 30° C. higher than the crystalline temperature, and that the crystalline resin is a polypropylene resin.