Plastic, paper, sugar, grain and other commodities are all getting more expensive as demand outpaces supply. Companies are also paying more for shipping as fuel costs rise and ports experience longer delays because of congestion.Kimberly-Clark announced price hikes for its products like Huggies diapers and Scott toilet paper would begin next month."Nearly all of the increases will be effective in late June and impact the company's baby and child care, adult care and Scott bathroom tissue businesses," the company said in a news release.Proctor & Gamble also announced in April its prices would increase in September in three categories — baby care, feminine and adult incontinence — due to the rising raw material costs needed to produce the.