Exhibit 3.45


                                                           STATE OF DELAWARE
                                                           SECRETARY OF STATE
                                                        DIVISION OF CORPORATIONS
                                                       FILED 04:30 PM 07/07/1999
                                                          991277237 - 3059231

                          CERTIFICATE OF INCORPORATION
                                       OF
                    MILACRON PLASTICS TECHNOLOGIES GROUP INC.

                  I, the undersigned, for the purposes of incorporating and
      organizing a corporation under the General Corporation Law of the State of
      Delaware, do execute this Certificate of Incorporation and do hereby
      certify as follows:

                  FIRST. The name of the corporation is Milacron Plastics
      Technologies Group Inc.

                  SECOND. The address of the corporation's registered office in
      the State of Delaware is 1209 Orange Street, in the City of Wilmington,
      County of New Castle, 19801. The name of its registered agent at such
      address is The Corporation Trust Company.

                  THIRD. The purpose of the corporation is to engage in any
      lawful act or activity for which corporations may be organized under the
      General Corporation Law of the State of Delaware.

                  FOURTH. The total number of shares of stock which the
      corporation shall have authority to issue is 1,000. All such shares are to
      be Common Stock, par value of $1.00 per share, and are to be of one
      class.

                  FIFTH. The incorporator of the corporation is RL&F Service
      Corp., whose mailing address is One Rodney Square, 10th Floor, Tenth and
      King Streets, Wilmington DE 19801.

                  SIXTH. Unless and except to the extent that the by-laws of the
      corporation shall so require, the election of directors of the corporation
      need not be by written ballot.

                  SEVENTH. In furtherance and not in limitation of the powers
      conferred by the laws of the State of Delaware, the Board of Directors of
      the corporation is expressly authorized to make, alter and repeal the
      by-laws of the corporation, subject to the power of the stockholders of
      the corporation to alter or repeal any by-law whether adopted by them or
      otherwise.

                  EIGHTH. A director of the corporation shall not be liable to
      the corporation or its stockholders for monetary damages for breach of
      fiduciary duty as a director, except to the extent such exemption from
      liability or limitation thereof is not permitted under the General
      Corporation Law of the State of Delaware as the same exists or may
      hereafter be amended. Any amendment, modification or repeal of the
      foregoing sentence shall not adversely affect any right or protection of a
      director of the corporation hereunder in respect

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      of any act or omission occurring prior to the time of such amendment,
      modification or repeal.

                  NINTH. The corporation reserves the right at any time, and
      from time to time, to amend, alter, change or repeal any provision
      contained in this Certificate of Incorporation, and other provisions
      authorized by the laws of the State of Delaware at the time in force may
      be added or inserted, in the manner now or hereafter prescribed by law;
      and all rights, preferences and privileges of whatsoever nature conferred
      upon stockholders, directors or any other persons whomsoever by and
      pursuant to this Certificate of Incorporation in its present form or as
      hereafter amended are granted subject to the rights reserved in this
      article.

                  TENTH. The powers of the incorporator are to terminate upon
      the filing of this Certificate of Incorporation with the Secretary of
      State of the State of Delaware. The names and mailing addresses of the
      persons who are to serve as the initial directors of the corporation until
      the first annual meeting of stockholders of the corporation, or until
      their successors are duly elected and qualified, are:

                  Daniel J. Meyer
                  2090 Florence Avenue
                  Cincinnati, OH 45206

                  Harold J. Faig
                  2090 Florence Avenue
                  Cincinnati, OH 45206

                  Ronald D. Brown
                  2090 Florence Avenue
                  Cincinnati, OH 45206

                  The undersigned incorporator hereby acknowledges that the
      foregoing certificate of incorporation is his act and deed on this the 7th
      day of July 1999.

                                         RL&F SERVICE CORP.

                                         By: /s/ C. Stephen Bigler
                                             --------------------------------
                                         C. Stephen Bigler
                                         President

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