Richmond, Virginia - US foamer Carpenter Co. is moving to use of moisture-barrier films made with renewably sourced (RS) polymers from DuPont, as a key element of its EnviroStep carpet-cushion technology. According to the carpet-backing expert, films made with the RS materials contain a minimum of 20 percent renewably sourced content by weight, and replace existing films that are entirely petroleum-based.
The moisture barrier in the cushion is laminated to the top surface of the cushion, and "prevents spills or pet accidents from soaking into the cushion like a giant sponge." As a result, it is possible to pull spills back to the surface, preventing the cushion from harbouring permanent odours, eliminating damage to the sub-floor and preventing reoccurring stains caused when a spill wicks back to the surface of the carpet, said Carpenter's 18 Aug statement.
Carpenter is using two DuPont RS materials into its cushioning products. Carpenter's Spillguard and Odor-Eaters cushioning are available now with DuPont's Active Layer RS moisture barrier film.
In the near future, Carpenter intends to replace DuPont's Hytrel "breathable" moisture-barrier film in its Stainmaster carpet cushioning with a similar Hytrel film made from RS products.
Breathable films offer an escape for moisture trapped under the cushion, said Carpenter.
"As a leading manufacturer of carpet cushion," said Ken Thompsen, vice president - sales and marketing at Carpenter Co. the company aims for "technological advancements to help safeguard consumers' homes and the environment. … Our EnviroStep™ technology is the latest embodiment of that effort."
Carpenter pointed out that all EnviroStep products are made from 100-percent recycled polyurethane trim - a by-product of making virgin polyurethane for furniture, bedding, and packaging. In turn, the carpet cushion products are themselves 100 percent recyclable, according to Thompsen, who cited the fact that more than 1000 million pounds (454 kilotonnes) of urethane trim that would otherwise go to landfill is used annually to produce bonded carpet cushion.
Additionally, Carpenter incorporates bio-based materials in the polyol used to bind recycled urethane trim in making carpet cushion, so replacing some of the petroleum-based polyol.
PIC: Cushion with no moisture barrier (l) allows liquids to penetrate,while with a barrier film (r) liquid cannot penetrate the cushioning,and is blotted up from the carpet.