8 Plastic Welding Safety Tips

The tools of any trade can pose safety risks if improperly used or maintained. To keep operators of  hot-air hand tools and automatic walk welders safe, it is the responsibility of employers, supervisors and peers, to make sure proper precautions are routinely taken.  

Following are 8 tips you can use to help keep Leister equipment operators safe:

Plastic Welding Safety Tips

1. Review Safety Instructions—Every operator should read their tool's safety instructions. If you have any questions, or would need further clarification on any item listed, contact your sales and service representatives

2. Review M.S.D. Sheets—Plastics Magazine recommends reading the material safety data (M.S.D.) sheets of the plastic your welding. Among other things, these sheets are required to detail the plastic’s hazardous ingredients, fire and explosion hazard information, preventative actions, and first-aid recommendations. Request these sheets from the plastic manufacturer.

3. Train Employees—Train all personnel on how to properly use the welder(s) they will be operating. Specifically, demonstrate how to turn the welder on, run it, shut it down, clean it after use, and what to do in the case of a malfunction or emergency—for example, if a drive motor shuts down while welding or if plastic material catches fire. 

4. Store Properly Between Uses—After completing a weld, an operator may set down the hot-air tool, or leave the walk welder to prep for the next weld. Because the machine will still be hot and likely blowing hot air, make sure to do the following:

  • Hot-Air Hand Tools—Set the tool on a flat surface where it won’t roll, or in a stand with the nozzle pointed away from the surface. Also keep the hot-air stream and nozzle away from flammable materials and body parts to avoid the risk of fire and burns. 
  • Automatic Walk Welder—Secure the welding nozzle in the up, locked position, and move it away from heavy traffic areas and flammable materials.  

5. Clean Work Areas—Remove any clutter from the work area to ensure a full range of movement. This helps the operator avoid knocking over or spilling anything that may damage the plastic material, catch fire, or require an immediate cleanup. Hastily setting down the tool to clean messes can lead to improper storage between use.

6. Clean Plastic Surfaces—Remove any contaminants that may be on the plastic being welded, including grease, oils, dirt and moisture. These contaminants may be fire risks or cause the plastic not to weld at all, possibly leading the operator to turn up the heat to unsafe levels to attain a weld. 

7. Properly Maintain the Tool—Scrape away melted plastic after each use, and clean air filters of dust and contaminants to ensure the tool receives the proper air supply. Both of these issues can lead to heat backup and overheating. In addition, make sure to replace any frayed or sliced electrical cords to avoid accidental shock. 

8. Wear Proper Attire and Equipment—Make sure all operators are wearing the proper protective equipment (PPE) to limit exposure to heated air and surfaces, as well as any airborne plastic or debris. PPE should include long sleeve shirts, pants, gloves and protective eyewear. In addition, depending on the plastic being welded and ventilation, a respirator may be necessary. 

What more should companies do to protect their employees operating hot-air hand tools and automatic walk welders? Please share your thoughts in the comments below. 

(Image: Wikipedia)


Kayjsharp @sfm-tusker

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PPE (personal protective equipments) are highly recommended for industrial safety. All other points in above post are good enough for safety aspects.

Affordable Steel Pipe in Brisbane

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Every person who is working in the welding industry , implements these tips. They can save themselves from an accident if they give focus on these tips.

Welding Fabrication experts

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This is a good article. Welding is a high skilled job and high risk job depend on the condition you are working and sometime you have work underground or sky high place and you need to be prepare for the situation and follow all the rules and regulation. Eye safety is more important and high voltage tools need to be handled carefully.


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What type of respiratory system should be worn, when welding a PVC roof system? I.e. duro last or ib?


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I have a project of fabrication and installation of dual laminate pipes and the welder refused to wear gloves during thermoplastic welding and the reason is to ensure quality of the welding (hot gases welding method)need to weld without wearing gloves...how to convience them the welders that they must wear gloves? which standard is controlling that

Poly Welding In Australia

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Great tips. Some jobs come with great risk and I would like to say that welding is on of them. Therefore it is advised to follow all the rules and regulation in order to avoid any work related risk.

Welding experts Melbourne

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Safety is the main that. You have to make sure the equipment and proper guidelines are initiates before every work we start.

Elizabeth R. Womack

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This post provides useful information related to welding. Personally I think that following the tips above can avoid the risks of welding, especially those who are novice to welding and do not have much knowledge about it. Thanks!


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Great safety tips there, will make use of them !

Steven Turner

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Great tips! These are important for welders of any skill level.

Pipe Welder

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Thank you for the very, very helpful information!


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I like that you point out that it is important to properly store away the machine to avoid any accidents. I can see why staying safe would a concern for those operating heavy machinery. It seems like it would be a good idea to receiving training on how to properly operate the machines.


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Thanks for providing safety its is really important before start welding .

Max Jones

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I have a friend who has gotten into plastic welding as a hobby recently and was telling me about it. I was curious so I decided I'd look up more specifics about working with plastic. I think tip 6 would be important in making sure you have clean plastic. Maybe using a plastic manufacturer to get your plastic from would help with getting cleaner product to work with? I'll have to share these tips with my friend and see what he thinks about working with a manufacturer!

Md Salehin

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This is really nice post. This post has really impress me through its quality writing. In this article i watch some new writing style which is really nice. So thanks for sharing such a awesome post.

my helmets guide

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all the steps regarding safety are pretty good. but if you really want your workers do welding properly with safety. just kept in mind that make your workers trained properly or you can hire only trained welders


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Ellen Hughes

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I agree that it's important for welders to be trained on how to use the welders and how to operate them basically to ensure their safety. My husband is planning to do some welding works at home. He doesn't have the skills and the proper training to do the job, and I don't want to compromise his safety. I'll make sure to hire a mobile welding service provider instead.

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