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EXHIBIT 21
PACTIV CORPORATION
SUBSIDIARIES AND AFFILIATES
AS OF FEBRUARY 25, 2004
<Table>
Pactiv Corporation (Delaware)
Pactiv S.a.S. (France).................................... 100%
Airpack Japan K.K. (Japan)(1)............................. 100
Pactiv Polska Sp.Z.O.O. (Poland).......................... 100
Pactiv SpA (Italy)........................................ 98
(Pactiv Corporation owns 98%; Pactiv International
Holdings Inc. owns 2%)
Counce Finance Corporation (Delaware)..................... 100
Dongguan PCA Packaging Co., Ltd. (Peoples Republic of
China)................................................. 50
(Pactiv Corporation owns 50%; Dongguan Dong Ya Color
Printing & Packaging Factory, an unaffiliated company,
owns 50%)
EKCO Products, Inc. (Illinois)............................ 100
E-Z Por Corporation (Delaware)............................ 100
Hexacomb Corporation (Illinois)........................... 100
Central de Bolsas (Mexico)................................ 100
Kobusch Packaging Egypt Ltd. (Egypt)...................... 99.75
(Pactiv Corporation owns 99.75%; Kobusch -- Sengewald
GmbH owns .25%)
Omni-Pac S.A.R.L. (France)................................ 97
(Pactiv Corporation owns 97%; Omni-Pac GmbH & Co. KG
Verpackungsmittel owns 3%)
Pactiv Asia Corporation (Delaware)........................ 100
Pactiv Business Services Holdings LLC (Delaware).......... 100
Pactiv Business Services LLC (Delaware)................ 100
Pactiv Chile Holdings Inc. (Delaware)..................... 100
Pactiv Germany Holdings Inc. (Delaware)................... 100
</Table>
- ---------------
(1) In dissolution
PACTIV CORPORATION
SUBSIDIARIES AND AFFILIATES
AS OF FEBRUARY 25, 2004
<Table>
Subsidiaries of Pactiv Corporation (Delaware)
Pactiv CPI Holding Company (Delaware)..................... 100%
Pactiv Deutschland Holdinggesellschaft mbH (Germany)...... 100
Kobusch Folien Verwaltungsgesellschaft mbH (Germany)... 100
Kobusch -- Sengewald GmbH & Co. KG (Germany)......... 100
(Pactiv Deutschland Holdinggesellschaft mbH is the
Limited Partner; Kobusch-Folien
Verwaltungsgesesellschaft mbH is the General
Partner)
Kobusch Packaging Egypt Ltd.(Egypt)............... 0.25
(Kobusch -- Sengewald GmbH & Co. KG owns 0.25%;
Pactiv Corporation owns 99.75%)
Omni-Pac Ekco Verpackungsmittel Verwaltungsgesellschaft
mbH (Germany)......................................... 100
Omni-Pac Ekco GmbH & Co. KG Verpackungsmittel
(Germany)........................................... 100
(Pactiv Deutschland Holdinggesellschaft mbH is the
Limited Partner; Omni-Pac Ekco Verpackungsmittel
Verwaltungsgesellschaft mbH is the General Partner)
Omni-Pac Poland SP Z.O.O. (Poland)................ 100
PCA Embalajes Espana S.L. (Spain)................. 1
(Omni-Pac Ekco GmbH & Co. KG Verpackungsmittel
owns 1%; Pactiv Forest Products GmbH owns 99%)
Omni-Pac Verpackungsmittel Verwaltungsgesellschaft mbH
(Germany)............................................. 100
Omni-Pac GmbH & Co. KG (Germany)..................... 100
(Pactiv Deutschland Holdinggesellschaft mbH is the
Limited Partner; Omni-Pac Verpackungsmittel
Verwaltungsgesellschaft mbH is the General Partner)
Omni-Pac ApS (Denmark)............................ 100
Omni-Pac A.B. (Sweden)............................ 100
Omni-Pac S.A.R.L. (France)........................ 3
(Omni-Pac GmbH & Co. KG owns 3%; Pactiv
Corporation owns 97%)
</Table>
PACTIV CORPORATION
SUBSIDIARIES AND AFFILIATES
AS OF FEBRUARY 25, 2004
<Table>
Subsidiaries of Pactiv Corporation (Delaware)
Subsidiaries of Pactiv Deutschland Holdinggesellschaft mbH
(Germany)
Sengewald Klinikprodukte Verpackungsmittel mbH
(Germany)............................................. 100%
Sengewald Klinikprodukte GmbH & Co. KG (Germany)..... 100
(Pactiv Deutschland Holdinggesellschaft mbH is the
Limited Partner; Sengewald Klinikprodukte
Verpackungsmittel mbH is the General Partner)
MSP Schmeiser GmbH (Germany)...................... 100
Sengewald France S.A.R.L. (France)(2)............. 100
Omni-Pac GmbH & Co. KG (Germany)..................... 100
(Pactiv Deutschland Holdinggesellschaft mbH is the
Limited Partner; Omni-Pac Verpackungsmittel
Verwaltungsgesellschaft mbH is the General Partner)
Omni-Pac Ekco GmbH & Co. KG Verpackungsmittel
(Germany)........................................... 100
(Pactiv Deutschland Holdinggesellschaft mbH is the
Limited Partner; Omni-Pac Ekco Verpackungsmittel
Verwaltungsgesellschaft mbH is the General Partner)
Kobusch-Sengewald GmbH & Co. KG (Germany)............ 100
(Pactiv Deutschland Holdinggesellschaft mbH is the
Limited Partner; Kobusch-Folien
Verwaltungsgesellschaft mbH is the General Partner)
Sengewald Klinikprodukte GmbH & Co. KG (Germany)..... 100
(Pactiv Deutschland Holdinggesellschaft mbH is the
Limited Partner; Sengewald Klinikprodukte
Verpackungsmittel mbH is the General Partner)
Pactiv Europe B.V. (Netherlands).......................... 100
Pactiv factoring llc (Delaware)........................... 100
Pactiv RSA LLC (Delaware)................................. 100
Pactiv Sales Company LLC (Delaware)....................... 100
Pactiv Irish Holding Company Limited (Ireland)............ 100
Pactiv Irish Finance Company (Ireland).................... 100
Privni Obalova S.R.O. (Czech Republic).................... 100
PT Property LLC (Delaware)................................ 100
Pactiv B.V. (Netherlands)................................. 100
Pactiv Forest Products GmbH (Germany)..................... 100
PCA Embalajes Espana S.L. (Spain)...................... 99
(Pactiv Forest Products GmbH owns 99%; Omni-Pac Ekco
Verpackungsmittel GmbH & Co. KG owns 1%)
Pactiv Hexacomb S.A. (Spain).............................. 100
Pactiv Hungary Holdings Inc. (Delaware)................... 100
Pactiv International Business Development Limited
(Delaware)............................................. 100
Ambassador Packaging (Ireland) Limited (Ireland)..... 100
</Table>
- ---------------
(2) In dissolution
PACTIV CORPORATION
SUBSIDIARIES AND AFFILIATES
AS OF FEBRUARY 25, 2004
<Table>
Subsidiaries of Pactiv Corporation (Delaware)
Pactiv International Finance B.V. (Netherlands)........... 100%
Pactiv International Holdings Inc. (Delaware)............. 100
Pactiv SpA (Italy)..................................... 2
(Pactiv International Holdings Inc. owns 2%; Pactiv
Corporation owns 98%. Subsidiaries listed on page 1.)
Empaques Protectores Pactiv S.A. de C.V. (Mexico)...... 99
(Pactiv Internation Holdings Inc. owns more than 99%;
Pactiv Mexico, S.A. de C.V. owns less than 1%)
Pactiv Mexico , S.A. de C.V. (Mexico).................. 99.99
(Pactiv International Holdings Inc. owns 499.999
shares; Pactiv Corporation owns 1 share)
Empaques Protectores Pactiv S.A. de C.V. (Mexico).... <1
(Pactiv Mexico, S.A. de C.V. owns less than 1%;
Pactiv International Holdings Inc. owns more than 99%)
Pactiv N.V. (Belgium).................................. <1
(Pactiv International Holdings Inc. owns less than 1%
or 18 shares; Pactiv Corporation owns approximately
99.6%; the remainder of the share are held by
unaffiliated third parties)
Wellenfoam N.V. (Belgium).............................. <1
(Pactiv International Holdings Inc. owns less than 1%
or 1 share; Pactiv Corporation owns more than 99%)
Pactiv Leasing Company (Delaware)......................... 100
Pactiv Management Company LLC (Delaware).................. 100
Pactiv Mexico, S.A. de C.V. (Mexico)...................... 0.01
(Pactiv Corporation owns 1 share; Pactiv International
Holdings Inc. owns 499,999 shares)
Pactiv NHC Inc. (Nevada).................................. 100
Pactiv Protective Packaging Inc. (Delaware)............... 100
Pactiv Romania Holdings Inc. (Delaware)................... 100
</Table>
PACTIV CORPORATION
SUBSIDIARIES AND AFFILIATES
AS OF FEBRUARY 25, 2004
<Table>
Subsidiaries of Pactiv Corporation (Delaware)
PCA West Inc. (Delaware).................................. 100
Coast-Packaging Company (California General
Partnership).......................................... 50
(PCA West Inc. owns 50%, as General Partner; J.G.
Haddy Sales Company, an unaffiliated company, owns
50%, as General Partner)
Pactiv N.V. (Belgium)..................................... 99.6
(Pactiv Corporation owns approximately 99.6%; Pactiv
International Holdings Inc. owns 18 shares; the
remainder of the shares are held by unaffiliated third
parties)
Pactiv GmbH (Germany)................................ <1
(pactiv N.V. owns less than 1%; Pactiv Corporation
owns more than 99%)
Pactiv GmbH (Germany)..................................... >99
(Pactiv Corporation owns more than 99%; Pactiv N.V.
owns less than 1%)
Tenneco Inc. (Nevada)(1).................................. 100
The Baldwin Group Ltd. (United Kingdom)................... 100
J&W Baldwin (Holdings) Ltd. (United Kingdom)........... 100
Baldwin Packaging Limited (United Kingdom)........... 99.9
(J&W Baldwin (Holdings) Ltd. owns 99.9%; The
Baldwin Group, Ltd. owns less than 1% or 1 share)
Ambassador Packaging Ltd. (United Kingdom)............. 100
Coastal Packaging Ltd. (United Kingdom).............. 100
Prempack Limited (United Kingdom).................... 100
R & H Robinson (Sheffield) Ltd. (United Kingdom)..... 100
</Table>
- ---------------
(1) In dissolution
PACTIV CORPORATION
SUBSIDIARIES AND AFFILIATES
AS OF FEBRUARY 25, 2004
<Table>
Subsidiaries of Pactiv Corporation (Delaware)
Subsidiaries of The Baldwin Group, Ltd. (United Kingdom)
Subsidiaries of J&W Baldwin (Holdings) Ltd. (United
Kingdom)
Subsidiaries of Baldwin Packaging Limited (United
Kingdom)
Jiffy Rugated Products Limited (United Kingdom)... 99.9%
(Baldwin Packaging Limited owns 99.9%; The
Baldwin Group, Ltd. owns less than 1% or 1 share)
J&W Baldwin (Manchester) Limited (United
Kingdom)............................................ 99.9
(Baldwin Packaging Limited owns 99.9%; The
Baldwin Group, Ltd. owns less than 1% or 1 share)
Jiffy Packaging Company Limited (United
Kingdom)............................................ 99.9
(J&W Baldwin (Holdings) Ltd. owns 99.9%; The
Baldwin Group, Ltd. owns less than 1% or 1 share)
Pactiv Jiffy Ltd. (United Kingdom)................ 99.9
(J&W Baldwin (Holdings) Ltd. owns 99.9%; The
Baldwin Group, Ltd. owns less than 1% or 1 share)
Pentland Packaging Limited (Scotland)............. 99.9
(J&W Baldwin (Holdings) Ltd. owns 99.9%; The
Baldwin Group, Ltd. owns less than 1% or 1 share)
J&W Baldwin (Manchester) Limited (United
Kingdom)............................................ <1
(The Baldwin Group Ltd. owns less than 1% or 1
share; Baldwin Packaging Limited owns 99.9%)
Jiffy Rugated Products Limited (United Kingdom)... <1
(The Baldwin Group, Ltd. owns less than 1% or 1
share; Baldwin Packaging Limited owns 99.9%)
Pentland Packaging Limited (Scotland)............. <1
(The Baldwin Group Ltd. owns less than 1% or 1
share; Baldwin Packaging Limited owns 99.9%)
Jiffy Packaging Company Limited (United
Kingdom)............................................ <1
(The Baldwin Group Ltd. owns less than 1% or 1
share; J&W Baldwin (Holdings) Limited owns 99.9%)
Pactiv Jiffy Ltd. (United Kingdom)................ <1
(The Baldwin Group, Ltd. owns less than 1% or 1
share; J&W Baldwin (Holdings) Ltd. owns 99.9%)
Omni-Pac Limited (United Kingdom).................... 100
</Table>
PACTIV CORPORATION
SUBSIDIARIES AND AFFILIATES
AS OF FEBRUARY 25, 2004
<Table>
Subsidiaries of Pactiv Corporation (Delaware)
Subsidiaries of The Baldwin Group, Ltd. (United Kingdom)
Subsidiaries of J&W Baldwin (Holdings) Ltd. (United
Kingdom
Pactiv (U.K.) Limited (Scotland)..................... 100%
Alpha Products (Bristol) Limited (United
Kingdom).......................................... 100
Brucefield Plastics Limited (Scotland)............ 100
Pactiv (Caerphilly) Limited (United Kingdom)...... 100
Pactiv (Films) Limited (United Kingdom)........... 100
Pactiv (Livingston) Limited (United Kingdom)...... 100
Pactiv (Stanley) Limited (United Kingdom)......... 100
Polbeth Packaging (Corby) Limited (Scotland)...... 100
Pactiv Limited (United Kingdom)...................... 100
The Corinth and Counce Railroad Company
(Mississippi)......................................... 100
Valdosta Southern Railroad Company (Florida)......... 100
798795 Ontario Limited (Ontario)....................... 100
Astro-Valcour, Ltd. (Ontario)........................ 100
Pactiv Canada Inc. (Ontario)......................... 100
Wellenfoam N.V. (Belgium).............................. 99.9
(Pactiv Corporation owns 99.9%; Pactiv International
Holdings Inc. owns less than 1% or 1 share)
Zhejing Zhongbao Packaging (Peoples Republic of
China)................................................ 62.5
(Pactiv Corporation owns 62.5%; non-affiliates own
37.5%)
</Table>