diff --git a/src/Spout/Writer/Common/Creator/EntityFactory.php b/src/Spout/Writer/Common/Creator/EntityFactory.php
index 91d7576..c683251 100644
--- a/src/Spout/Writer/Common/Creator/EntityFactory.php
+++ b/src/Spout/Writer/Common/Creator/EntityFactory.php
@@ -4,49 +4,16 @@ namespace Box\Spout\Writer\Common\Creator;
 
 use Box\Spout\Writer\Common\Entity\Cell;
 use Box\Spout\Writer\Common\Entity\Row;
-use Box\Spout\Writer\Common\Entity\Sheet;
 use Box\Spout\Writer\Common\Entity\Style\Style;
-use Box\Spout\Writer\Common\Entity\Workbook;
-use Box\Spout\Writer\Common\Entity\Worksheet;
 use Box\Spout\Writer\Common\Manager\RowManager;
-use Box\Spout\Writer\Common\Manager\SheetManager;
 use Box\Spout\Writer\Common\Manager\Style\StyleMerger;
 
 /**
  * Class EntityFactory
- * Factory to create entities
+ * Factory to create external entities
  */
 class EntityFactory
 {
-    /**
-     * @return Workbook
-     */
-    public function createWorkbook()
-    {
-        return new Workbook();
-    }
-
-    /**
-     * @param string $worksheetFilePath
-     * @param Sheet $externalSheet
-     * @return Worksheet
-     */
-    public function createWorksheet($worksheetFilePath, Sheet $externalSheet)
-    {
-        return new Worksheet($worksheetFilePath, $externalSheet);
-    }
-
-    /**
-     * @param int $sheetIndex Index of the sheet, based on order in the workbook (zero-based)
-     * @param string $associatedWorkbookId ID of the sheet's associated workbook
-     * @param SheetManager $sheetManager To manage sheets
-     * @return Sheet
-     */
-    public function createSheet($sheetIndex, $associatedWorkbookId, $sheetManager)
-    {
-        return new Sheet($sheetIndex, $associatedWorkbookId, $sheetManager);
-    }
-
     /**
      * @param mixed $cellValue
      * @param Style|null $cellStyle
@@ -57,14 +24,6 @@ class EntityFactory
         return new Cell($cellValue, $cellStyle);
     }
 
-    /**
-     * @return \ZipArchive
-     */
-    public function createZipArchive()
-    {
-        return new \ZipArchive();
-    }
-
     /**
      * @param array $cells
      * @param Style|null $rowStyle
diff --git a/src/Spout/Writer/Common/Creator/InternalEntityFactory.php b/src/Spout/Writer/Common/Creator/InternalEntityFactory.php
new file mode 100644
index 0000000..5e8a1d4
--- /dev/null
+++ b/src/Spout/Writer/Common/Creator/InternalEntityFactory.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace Box\Spout\Writer\Common\Creator;
+
+use Box\Spout\Writer\Common\Entity\Sheet;
+use Box\Spout\Writer\Common\Entity\Workbook;
+use Box\Spout\Writer\Common\Entity\Worksheet;
+use Box\Spout\Writer\Common\Manager\SheetManager;
+
+/**
+ * Class InternalEntityFactory
+ * Factory to create internal entities
+ */
+class InternalEntityFactory
+{
+    /**
+     * @return Workbook
+     */
+    public function createWorkbook()
+    {
+        return new Workbook();
+    }
+
+    /**
+     * @param string $worksheetFilePath
+     * @param Sheet $externalSheet
+     * @return Worksheet
+     */
+    public function createWorksheet($worksheetFilePath, Sheet $externalSheet)
+    {
+        return new Worksheet($worksheetFilePath, $externalSheet);
+    }
+
+    /**
+     * @param int $sheetIndex Index of the sheet, based on order in the workbook (zero-based)
+     * @param string $associatedWorkbookId ID of the sheet's associated workbook
+     * @param SheetManager $sheetManager To manage sheets
+     * @return Sheet
+     */
+    public function createSheet($sheetIndex, $associatedWorkbookId, $sheetManager)
+    {
+        return new Sheet($sheetIndex, $associatedWorkbookId, $sheetManager);
+    }
+
+    /**
+     * @return \ZipArchive
+     */
+    public function createZipArchive()
+    {
+        return new \ZipArchive();
+    }
+}
diff --git a/src/Spout/Writer/Common/Helper/ZipHelper.php b/src/Spout/Writer/Common/Helper/ZipHelper.php
index e970571..b8fcd6c 100644
--- a/src/Spout/Writer/Common/Helper/ZipHelper.php
+++ b/src/Spout/Writer/Common/Helper/ZipHelper.php
@@ -2,7 +2,7 @@
 
 namespace Box\Spout\Writer\Common\Helper;
 
-use Box\Spout\Writer\Common\Creator\EntityFactory;
+use Box\Spout\Writer\Common\Creator\InternalEntityFactory;
 
 /**
  * Class ZipHelper
@@ -16,11 +16,11 @@ class ZipHelper
     const EXISTING_FILES_SKIP = 'skip';
     const EXISTING_FILES_OVERWRITE = 'overwrite';
 
-    /** @var EntityFactory Factory to create entities */
+    /** @var InternalEntityFactory Factory to create entities */
     private $entityFactory;
 
     /**
-     * @param EntityFactory $entityFactory Factory to create entities
+     * @param InternalEntityFactory $entityFactory Factory to create entities
      */
     public function __construct($entityFactory)
     {
diff --git a/src/Spout/Writer/Common/Manager/WorkbookManagerAbstract.php b/src/Spout/Writer/Common/Manager/WorkbookManagerAbstract.php
index 89b0c00..76c7727 100644
--- a/src/Spout/Writer/Common/Manager/WorkbookManagerAbstract.php
+++ b/src/Spout/Writer/Common/Manager/WorkbookManagerAbstract.php
@@ -4,7 +4,7 @@ namespace Box\Spout\Writer\Common\Manager;
 
 use Box\Spout\Common\Exception\IOException;
 use Box\Spout\Common\Manager\OptionsManagerInterface;
-use Box\Spout\Writer\Common\Creator\EntityFactory;
+use Box\Spout\Writer\Common\Creator\InternalEntityFactory;
 use Box\Spout\Writer\Common\Creator\ManagerFactoryInterface;
 use Box\Spout\Writer\Common\Entity\Options;
 use Box\Spout\Writer\Common\Entity\Row;
@@ -37,7 +37,7 @@ abstract class WorkbookManagerAbstract implements WorkbookManagerInterface
     /** @var FileSystemWithRootFolderHelperInterface Helper to perform file system operations */
     protected $fileSystemHelper;
 
-    /** @var EntityFactory Factory to create entities */
+    /** @var InternalEntityFactory Factory to create entities */
     protected $entityFactory;
 
     /** @var ManagerFactoryInterface $managerFactory Factory to create managers */
@@ -52,7 +52,7 @@ abstract class WorkbookManagerAbstract implements WorkbookManagerInterface
      * @param WorksheetManagerInterface $worksheetManager
      * @param StyleManagerInterface $styleManager
      * @param FileSystemWithRootFolderHelperInterface $fileSystemHelper
-     * @param EntityFactory $entityFactory
+     * @param InternalEntityFactory $entityFactory
      * @param ManagerFactoryInterface $managerFactory
      */
     public function __construct(
@@ -61,7 +61,7 @@ abstract class WorkbookManagerAbstract implements WorkbookManagerInterface
         WorksheetManagerInterface $worksheetManager,
         StyleManagerInterface $styleManager,
         FileSystemWithRootFolderHelperInterface $fileSystemHelper,
-        EntityFactory $entityFactory,
+        InternalEntityFactory $entityFactory,
         ManagerFactoryInterface $managerFactory
     ) {
         $this->workbook = $workbook;
diff --git a/src/Spout/Writer/ODS/Creator/HelperFactory.php b/src/Spout/Writer/ODS/Creator/HelperFactory.php
index bcb64b5..e6aa645 100644
--- a/src/Spout/Writer/ODS/Creator/HelperFactory.php
+++ b/src/Spout/Writer/ODS/Creator/HelperFactory.php
@@ -5,7 +5,7 @@ namespace Box\Spout\Writer\ODS\Creator;
 use Box\Spout\Common\Helper\Escaper;
 use Box\Spout\Common\Helper\StringHelper;
 use Box\Spout\Common\Manager\OptionsManagerInterface;
-use Box\Spout\Writer\Common\Creator\EntityFactory;
+use Box\Spout\Writer\Common\Creator\InternalEntityFactory;
 use Box\Spout\Writer\Common\Entity\Options;
 use Box\Spout\Writer\Common\Helper\ZipHelper;
 use Box\Spout\Writer\ODS\Helper\FileSystemHelper;
@@ -18,10 +18,10 @@ class HelperFactory extends \Box\Spout\Common\Creator\HelperFactory
 {
     /**
      * @param OptionsManagerInterface $optionsManager
-     * @param EntityFactory $entityFactory
+     * @param InternalEntityFactory $entityFactory
      * @return FileSystemHelper
      */
-    public function createSpecificFileSystemHelper(OptionsManagerInterface $optionsManager, EntityFactory $entityFactory)
+    public function createSpecificFileSystemHelper(OptionsManagerInterface $optionsManager, InternalEntityFactory $entityFactory)
     {
         $tempFolder = $optionsManager->getOption(Options::TEMP_FOLDER);
         $zipHelper = $this->createZipHelper($entityFactory);
diff --git a/src/Spout/Writer/ODS/Creator/ManagerFactory.php b/src/Spout/Writer/ODS/Creator/ManagerFactory.php
index 7624c4c..c8072c9 100644
--- a/src/Spout/Writer/ODS/Creator/ManagerFactory.php
+++ b/src/Spout/Writer/ODS/Creator/ManagerFactory.php
@@ -3,7 +3,7 @@
 namespace Box\Spout\Writer\ODS\Creator;
 
 use Box\Spout\Common\Manager\OptionsManagerInterface;
-use Box\Spout\Writer\Common\Creator\EntityFactory;
+use Box\Spout\Writer\Common\Creator\InternalEntityFactory;
 use Box\Spout\Writer\Common\Creator\ManagerFactoryInterface;
 use Box\Spout\Writer\Common\Entity\Options;
 use Box\Spout\Writer\Common\Manager\SheetManager;
@@ -18,17 +18,17 @@ use Box\Spout\Writer\ODS\Manager\WorksheetManager;
  */
 class ManagerFactory implements ManagerFactoryInterface
 {
-    /** @var EntityFactory */
+    /** @var InternalEntityFactory */
     protected $entityFactory;
 
     /** @var HelperFactory $helperFactory */
     protected $helperFactory;
 
     /**
-     * @param EntityFactory $entityFactory
+     * @param InternalEntityFactory $entityFactory
      * @param HelperFactory $helperFactory
      */
-    public function __construct(EntityFactory $entityFactory, HelperFactory $helperFactory)
+    public function __construct(InternalEntityFactory $entityFactory, HelperFactory $helperFactory)
     {
         $this->entityFactory = $entityFactory;
         $this->helperFactory = $helperFactory;
diff --git a/src/Spout/Writer/WriterFactory.php b/src/Spout/Writer/WriterFactory.php
index 6e7d8de..e3df0fd 100644
--- a/src/Spout/Writer/WriterFactory.php
+++ b/src/Spout/Writer/WriterFactory.php
@@ -6,7 +6,7 @@ use Box\Spout\Common\Creator\HelperFactory;
 use Box\Spout\Common\Exception\UnsupportedTypeException;
 use Box\Spout\Common\Helper\GlobalFunctionsHelper;
 use Box\Spout\Common\Type;
-use Box\Spout\Writer\Common\Creator\EntityFactory;
+use Box\Spout\Writer\Common\Creator\InternalEntityFactory;
 use Box\Spout\Writer\Common\Creator\Style\StyleBuilder;
 use Box\Spout\Writer\Common\Manager\Style\StyleMerger;
 
@@ -60,7 +60,7 @@ class WriterFactory
         $globalFunctionsHelper = new GlobalFunctionsHelper();
 
         $helperFactory = new XLSX\Creator\HelperFactory();
-        $managerFactory = new XLSX\Creator\ManagerFactory(new EntityFactory(), $helperFactory);
+        $managerFactory = new XLSX\Creator\ManagerFactory(new InternalEntityFactory(), $helperFactory);
 
         return new XLSX\Writer($optionsManager, $styleMerger, $globalFunctionsHelper, $helperFactory, $managerFactory);
     }
@@ -76,7 +76,7 @@ class WriterFactory
         $globalFunctionsHelper = new GlobalFunctionsHelper();
 
         $helperFactory = new ODS\Creator\HelperFactory();
-        $managerFactory = new ODS\Creator\ManagerFactory(new EntityFactory(), $helperFactory);
+        $managerFactory = new ODS\Creator\ManagerFactory(new InternalEntityFactory(), $helperFactory);
 
         return new ODS\Writer($optionsManager, $styleMerger, $globalFunctionsHelper, $helperFactory, $managerFactory);
     }
diff --git a/src/Spout/Writer/XLSX/Creator/HelperFactory.php b/src/Spout/Writer/XLSX/Creator/HelperFactory.php
index 8eea878..e295170 100644
--- a/src/Spout/Writer/XLSX/Creator/HelperFactory.php
+++ b/src/Spout/Writer/XLSX/Creator/HelperFactory.php
@@ -5,7 +5,7 @@ namespace Box\Spout\Writer\XLSX\Creator;
 use Box\Spout\Common\Helper\Escaper;
 use Box\Spout\Common\Helper\StringHelper;
 use Box\Spout\Common\Manager\OptionsManagerInterface;
-use Box\Spout\Writer\Common\Creator\EntityFactory;
+use Box\Spout\Writer\Common\Creator\InternalEntityFactory;
 use Box\Spout\Writer\Common\Entity\Options;
 use Box\Spout\Writer\Common\Helper\ZipHelper;
 use Box\Spout\Writer\XLSX\Helper\FileSystemHelper;
@@ -18,10 +18,10 @@ class HelperFactory extends \Box\Spout\Common\Creator\HelperFactory
 {
     /**
      * @param OptionsManagerInterface $optionsManager
-     * @param EntityFactory $entityFactory
+     * @param InternalEntityFactory $entityFactory
      * @return FileSystemHelper
      */
-    public function createSpecificFileSystemHelper(OptionsManagerInterface $optionsManager, EntityFactory $entityFactory)
+    public function createSpecificFileSystemHelper(OptionsManagerInterface $optionsManager, InternalEntityFactory $entityFactory)
     {
         $tempFolder = $optionsManager->getOption(Options::TEMP_FOLDER);
         $zipHelper = $this->createZipHelper($entityFactory);
@@ -31,10 +31,10 @@ class HelperFactory extends \Box\Spout\Common\Creator\HelperFactory
     }
 
     /**
-     * @param EntityFactory $entityFactory
+     * @param InternalEntityFactory $entityFactory
      * @return ZipHelper
      */
-    private function createZipHelper(EntityFactory $entityFactory)
+    private function createZipHelper(InternalEntityFactory $entityFactory)
     {
         return new ZipHelper($entityFactory);
     }
diff --git a/src/Spout/Writer/XLSX/Creator/ManagerFactory.php b/src/Spout/Writer/XLSX/Creator/ManagerFactory.php
index b8d1f07..09bb70b 100644
--- a/src/Spout/Writer/XLSX/Creator/ManagerFactory.php
+++ b/src/Spout/Writer/XLSX/Creator/ManagerFactory.php
@@ -3,7 +3,7 @@
 namespace Box\Spout\Writer\XLSX\Creator;
 
 use Box\Spout\Common\Manager\OptionsManagerInterface;
-use Box\Spout\Writer\Common\Creator\EntityFactory;
+use Box\Spout\Writer\Common\Creator\InternalEntityFactory;
 use Box\Spout\Writer\Common\Creator\ManagerFactoryInterface;
 use Box\Spout\Writer\Common\Entity\Options;
 use Box\Spout\Writer\Common\Manager\SheetManager;
@@ -19,17 +19,17 @@ use Box\Spout\Writer\XLSX\Manager\WorksheetManager;
  */
 class ManagerFactory implements ManagerFactoryInterface
 {
-    /** @var EntityFactory */
+    /** @var InternalEntityFactory */
     protected $entityFactory;
 
     /** @var HelperFactory $helperFactory */
     protected $helperFactory;
 
     /**
-     * @param EntityFactory $entityFactory
+     * @param InternalEntityFactory $entityFactory
      * @param HelperFactory $helperFactory
      */
-    public function __construct(EntityFactory $entityFactory, HelperFactory $helperFactory)
+    public function __construct(InternalEntityFactory $entityFactory, HelperFactory $helperFactory)
     {
         $this->entityFactory = $entityFactory;
         $this->helperFactory = $helperFactory;
diff --git a/src/Spout/Writer/XLSX/Manager/WorksheetManager.php b/src/Spout/Writer/XLSX/Manager/WorksheetManager.php
index 3701b93..613eabd 100644
--- a/src/Spout/Writer/XLSX/Manager/WorksheetManager.php
+++ b/src/Spout/Writer/XLSX/Manager/WorksheetManager.php
@@ -7,7 +7,7 @@ use Box\Spout\Common\Exception\IOException;
 use Box\Spout\Common\Helper\Escaper\XLSX as XLSXEscaper;
 use Box\Spout\Common\Helper\StringHelper;
 use Box\Spout\Common\Manager\OptionsManagerInterface;
-use Box\Spout\Writer\Common\Creator\EntityFactory;
+use Box\Spout\Writer\Common\Creator\InternalEntityFactory;
 use Box\Spout\Writer\Common\Entity\Cell;
 use Box\Spout\Writer\Common\Entity\Options;
 use Box\Spout\Writer\Common\Entity\Row;
@@ -51,7 +51,7 @@ EOD;
     /** @var StringHelper String helper */
     private $stringHelper;
 
-    /** @var EntityFactory Factory to create entities */
+    /** @var InternalEntityFactory Factory to create entities */
     private $entityFactory;
 
     /**
@@ -62,7 +62,7 @@ EOD;
      * @param SharedStringsManager $sharedStringsManager
      * @param XLSXEscaper $stringsEscaper
      * @param StringHelper $stringHelper
-     * @param EntityFactory $entityFactory
+     * @param InternalEntityFactory $entityFactory
      */
     public function __construct(
         OptionsManagerInterface $optionsManager,
@@ -70,7 +70,7 @@ EOD;
         SharedStringsManager $sharedStringsManager,
         XLSXEscaper $stringsEscaper,
         StringHelper $stringHelper,
-        EntityFactory $entityFactory
+        InternalEntityFactory $entityFactory
     ) {
         $this->shouldUseInlineStrings = $optionsManager->getOption(Options::SHOULD_USE_INLINE_STRINGS);
         $this->styleManager = $styleManager;