How to separate value exist on temp table dynamically separa

problem

How to separate value exist on temp table dynamically separated by comma ?

i work on sql server 2012 i need to separate field TeamName by comma

teamname ,teamname+'Date'

i need to loop to teamname filed in tmp table #Teams then separate by comma and every field will be next field + 'Date'

really #temp table #teams every time changed so i dont have static data so i need any way dynamically sepatae field

and second will be field+date

i need result as
Package,PackageDate,Parametric,ParametricDate,Scribing,ScribingDate,Lifecycle,LifecycleDate

CREATE TABLE #Teams
(
TeamId int,
TeamName nvarchar(200)
)
insert into #Teams(TeamId,TeamName) values
(1,'Package'),
(2,'Parametric'),
(3,'Scribing'),
(4,'Lifecycle')