Set Paper width in laravel-excel

I have data with large amount if columns. Now I want to export it in excel and pdf. I use Maatwebsite/Laravel-Excel package for that. Everything is working fine. But when I export to pdf it crops some column due to paper size.

Now I want to increase paper size But I did not found how to increase paper size.

Here is the code I have tried to increase paper size.

$sheet->setOrientation('landscape');
$sheet->setPaperSize(1);

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