You are actually posting in the Word forum, however the following should do the trick. You don't need to activate the document if working with ranges. The reason each sheet overwrote the previous is that you pasted to the document range, rather than insert a page and paste to that.
Code:
Option Explicit
Sub toWord()
Dim ws As Worksheet
Dim Wkbk1 As Workbook
Dim wdapp As Object
Dim wddoc As Object
Dim orng As Object
Dim strdocname As String
Set Wkbk1 = ActiveWorkbook
Application.ScreenUpdating = False
Application.DisplayAlerts = False
Application.EnableEvents = False
strdocname = "C:\Name.doc"
'file name & folder path
On Error Resume Next
'error number 429
Set wdapp = GetObject(, "Word.Application")
If Err.Number = 429 Then
Err.Clear
'create new instance of word application
Set wdapp = CreateObject("Word.Application")
End If
wdapp.Visible = True
'define paths to file
If Dir(strdocname) = "" Then
'MsgBox "The file" & strdocname & vbCrLf & "was not found " & vbCrLf & "C:\Path\Name.doc", _
' vbExclamation, "The document does not exist "
'Exit Sub
Set wddoc = wdapp.Documents.Add
Else
Set wddoc = wdapp.Documents.Open(strdocname)
End If
For Each ws In ActiveWorkbook.Worksheets
ws.Range("A1:A2").Copy
Set orng = wddoc.Range
orng.collapse 0
orng.Paste
orng.End = wddoc.Range.End
orng.collapse 0
orng.insertbreak 7
Next ws
lbl_Exit:
Set orng = Nothing
Set wddoc = Nothing
Set wdapp = Nothing
Set Wkbk1 = Nothing
Set ws = Nothing
Application.ScreenUpdating = True
Application.DisplayAlerts = True
Application.EnableEvents = True
Exit Sub
End Sub