Maro Publications

Blow Molding Containers

Patents with Abstracts


Maro Encyclopedia


Patent Abstracts

9. 8,287,970 
Plastic baby bottles, other blow molded articles, and processes for their manufacture
Pecorini, Gilliam and Phillips of Eastman Chemical Company, Tennessee, developed resins for baby bottles and other articles produced by blow molding from polymeric materials having glass transition temperatures ranging from C. to C. 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 C. greater than the glass transition temperature (Tg) of the polymeric material. (RDC 11/1/2012)

8. 8,287,798 
Method for blow-molding a packaging container using a gas and device for implementing same
Jover and Storione of Technoplan Engineering S.A., Switzerland, developed a method of gas blow forming packaging in a mould using a preform and  recovering the blow gas. (RDC 10/31/2012)

7 8,287,271 
Moulding unit for a plant for blow-moulding plastic containers, particularly bottles
Borgatti et al of Sacmi Cooperativa Meccanici Imola Societa' Cooperativa, Italy, developed a moulding unit for a plant for blow-moulding plastic containers from respective parisons comprises: two half-moulds, movable relative to each other between a position of opening and a position of closing at least one cavity for blow-moulding a respective container; and a locking device  for locking the two half-moulds  in the closed position, the locking device comprising two first fastening elements  which are moved to, and normally held in, a locked position by at least one elastic actuating element (RDC 10/24/2012)

6. 8,241,718 
Preform and a mold stack for producing the preform
Witz, Dearling and Sigler of Husky Injection Molding Systems Ltd., Canada, developed a preform, and a mold stack for producing the perform for blow molding.  The preform includes a neck, a gate, and a body. The gate portion, has a conical shape.  The conical homogenizes the reaction used during a re-heating stage. (RDC 8/20/2012)

5. 8,241,551 
Method of stretch-blow-moulding a beverage container
Vesborg and Rasmussen of Carlsberg Breweries A/S, Denmark, developed a method of stretch-blow-molding a beverage container for containing a carbonized beverage with a preform having a neck part and a body part.  The preform includes an inner layer of a first polymeric composition, an outer layer  of a second polymeric composition, and an intermediate layer of a third polymeric composition.  The third polymeric composition has adhesive surface properties relative to the first and second polymeric compositions, and the adhesive surface properties are permanently degraded by exposure to irradiation of a certain wavelength or certain wavelengths and intensity.  The method further comprises mounting the preform onto a stretch-blow-molding device and blow molding the preform into the beverage container by irradiating the body part with radiation at least including the certain wavelength or certain wavelengths and intensity while protecting the neck part from any substantial radiation. (RDC 8/16/2012)

4. 8,241,030 
Drawing-blowing method and device for molding thermoplastic material containers, in particular bottles, with petaloid bottoms
Vieillot of Sidel Participations, France, developed thermoplastic material containers with a petaloid bottom by drawing-blowing hot preforms  in a blowing mold that has a petaloid mold bottom including radiating ridges alternating with cavities that are adapted to form the valleys and the feet, respectively, of the container bottom; during drawing, heat losses are reduced in longitudinal zones of the end part of the preforms, extending over the bottom and over an axial portion of their body, distributed over the periphery of the ends of the preforms facing respective cavities of the mold bottom. (RDC 8/15/2012)

3. 8,231,379 
Apparatus for producing plastic containers
Schmid, Winzinger and Wittmann of Krones AG, Germany, developed a blow mold for plastic containers based on cooperating closures to transfer the blow mould between an open condition and a closed condition.  (RDC 8/6/2012)

2. 8,215,948 
Moulding device for the production of containers made from a thermoplastic material
Rousseau and Danel of Sidel Participations, France, developed a molding device for producing vessels by blowing or stretch-blowing heated thermoplastic preforms, the device including at least one mold that has at least two half-molds and a driving mechanism for moving the half-molds between an open position and a closed position. The two half-molds are hinged together for rotation about a hinge axis included in the junction plane and perpendicular to the axis of the molding cavity, the hinge axis being located under the half-molds, while a mechanism for locking the half-molds in their closed position are also provided. Each half-mold includes an outer surface area capable of abutment with an inner surface area of the mechanism for locking the half-molds in their closed position. The locking mechanism is in the form of a clamp capable of clamping the two half-molds in their closed position. (RDC 7/24/2012)

1. 8,192,656 
Installation for the manufacture of containers from a preform and method of controlling the blow-molding means of such an installation
Adriansens of Sidel Participations, France, developed an installation for manufacturing containers by moulding from a perform includes at least one moulding unit having a control device for controlling at least one nozzle associated with a mould, the nozzle being vertically movably mounted so as to move vertically between a top position and a bottom position in which the mould is closed.  The nozzle covers at least one flow opening that includes an upper horizontal wall of the mould.  The manufacture involves at least a first step including, the mould being closed, systematically controlling the vertical descent of the nozzle towards the bottom position independently of the presence or absence of a preform in the mould so that, both when the installation is operating and when it is at rest, the internal volume of the mould is isolated in order to avoid the risk of airborne particulate contamination. (RDC 6/18/2012)


Bookmark this page to follow future developments!.
(RDC 6/5/2012)


Roger D. Corneliussen

Maro Polymer Links
Tel: 610 363 9920
Fax: 610 363 9921


Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen

** Date of latest addition; date of first entry is 6/18/2012.