how can i keep a spider web intact and keep it visible on a piece of paper?

Answer 1

Use Black construction paper to enhace contrast with the web. You can push the paper onto the web then spray it with Clear Acrylic spray paint to fix it into place

Answer 2

Very lightly spray the paper with adhesive like 3M Spray adhesive, and then bring the paper up flat against the web and use scissors to cut away the strands outside the paper so you do not distort it when you pull. You may wish to use black or colored paper to make the web stand out. You will have to let the adhesive dry over a day or more. You may wish to use waxed paper to push the web down on the paper.
With some webs (sticky on most strands, instead of just some) you might find that construction paper (roughish surface) has enough tooth that the web will stick by itself.

Answer 3

This web site tells how to collect the spider web using spray paint.

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