How can I show the expiry date on printout for Product bundle?

I used the code below so it will be able to print the invoice with items included on Product bundle - there is a table named packed_items

	{%- for i in doc.packed_items -%}
<tr>
	<td>
	{{ i.item_code }} - {{ i.item_name }} - Batch:{{ i.batch_no or '' }} -  Batch: {{ i.expiry_date or '' }} - Qty: {{ i.qty or '' }}
	</td>
</tr>
{%- endfor -%}
{{ _("Products in Bundle") }}