 Carburetor and metering device therefor |
| OF THE PREFERRED EMBODIMENTS Referring now to the drawings, and in particular to FIG. 1, a four ... |
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| Method of forming a fibrous web using a variable transverse webber |
| The present invention is directed to the high-speed production of blends of long and short fibers ... |
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| Method of forming and bonding fluff pads |
| In the illustration given and with reference to first to FIG. 1, the numeral 10 designates ... |
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| Method of fabricating airlaid articles and apparatus for performing the method |
| It is accordingly an object of the invention to provide a method and an apparatus for fabricating ... |
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| Apparatus and method for the zoned placement of superabsorbent material |
| OF THE INVENTION For the purposes of the present description, the invention will be described in ... |
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| Method for making shaped nonwoven fabric |
| Accordingly, an object of the present invention is to provide an improved shaped nonwoven fabric ... |
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| Arrangement for air-layer fibre bodies on a moving air-permeable conveyor path |
| This object is achieved in accordance with the invention by means of an arrangement of the kind ... |
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| Apparatus for forming controlled density fibrous pads for diapers and the other absorbent products |
| OF THE PREFERRED EMBODIMENTS Referring to the drawings FIG. 1, shows the drum assembly 1 which is ... |
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| Buckle joint |
| Therefore, the object of the present invention is to provide a buckle joint that is capable of ... |
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Apparatus for making a hollow polyethylene terephthalate blow molded article with an integral external projection such as a handle
| Details |
Inventors: Belcher, Samuel L.;
Assignee: Sabel Plastechs, Inc. (Cincinnati, OH)
Primary Examiner: Silbaugh; Jan H.
Assistant Examiner: Timm; Catherine
Attorney, Agent or Firm: Wood, Herron & Evans
An apparatus for making a hollow polyethylene terephthalate (PET) blow molded article with an integral external projection such as handle. The method includes blow molding the hollow article and then injection molding the integral projection. The apparatus includes a combination blow mold and injection mold, a mechanism for opening and closing the combination mold, a mechanism for inserting an unblown preform into the mold, a blow gas injection mechanism for blowing the preform, and an injection nozzle for injection molding the integral projection. |
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DETAILED DESCRIPTION The present invention is directed to an apparatus for making articles of polyethylene terephthalate (PET), and more particularly to an apparatus for making a blow molded PET article, for instance, a bottle, with an integral PET projection, such as a handle or foot, extending from a wall thereof.
Since both the bottle and handle or foot are made of PET, they both possess the superior characteristics of this material and recycling is facilitated.
In essence, in the method and apparatus of this invention, a PET preform is inserted into a combination blow mold and injection mold wherein the blow mold cavity defines the article to be blown and the injection mold cavity defines the projection therefrom.
The injection mold cavity and the blow mold cavity are in communication with each other at at least one location defining the area where the handle or foot is to extend from the container.
The "preform" may be a co-extruded, co-injected, or straight injection molded or fabricated PET preform.
After insertion into the combination mold, the preform is injected with blow gas from a gas nozzle to conform the preform to the blow mold cavity, thereby forming the hollow blow molded article.
Prior to blowing the preform in the blow mold cavity, the preform temperature is established at its stretch orientation temperature, which is well known for PET to be in the range of 195.
degree.
F.
to 240.
degree.
F.
The preform may be one previously made on another machine which is heated to the stretch orient temperature range in a separate heating operation prior to insertion in the blow mold, or it may be a previously injection molded PET preform (as on a single-stage PET machine) that has cooled to the appropriate stretch orientation temperature immediately prior to insertion in the blow mold cavity.
While the pressure of the blow gas holds the preform in conformity with the blow mold cavity, and prior to exhausting the blow gas, molten PET is injected under pressure into the injection mold cavity to form the integral protrusion or handle and bond it to the blown preform article at the point where the injection mold cavity communicates with the blow mold cavity
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Nonmetallic Processes 
