Is Melting Tyvek Safe? Bonding for Projects

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Using Tyvek for bonding projects raises concerns about the safety and effectiveness of melting the material together. Tyvek, a type of polyethylene, is a thermoplastic that can be melted without decomposition if the temperature is kept low. However, melting Tyvek alters its crystalline structure, which can compromise the material's original properties. Therefore, while melting may be a feasible method for bonding, it is essential to consider the potential changes in strength and durability of the melted areas. For safe handling and application, consulting the Material Safety Data Sheet (MSDS) is recommended.
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I am using Tyvek for a project and need bond it together. I thought melting it together would the best way. Would that be safe.

MSDS:
http://www.google.com/url?sa=t&source=web&cd=1&ved=0CBwQFjAA&url=http%3A%2F%2Fwww.conservationresources.com.au%2Fhtml%2Fhome%2Fhelp_info%2Fdownloads%2FTyvek_MSDS.pdf&ei=kGdITJGjGoL78AaupfyDDw&usg=AFQjCNF4m6O5r5t9wW8q_DcLOysYAtG4uw&sig2=ElLraPvAmuC24EUnycLuuA

http://www2.dupont.com/Tyvek/en_US/tech_info/test_results.html
 
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It's a sort of polyethylene, which is a thermoplastic, meaning it can be melted without it decomposing, as long a you keep the temperature low.

However, this will lead to changes in the crystalline structure, so don't count on retaining the material properties in the melted part.
 

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