Plastic and nonmetallic article shaping or treating: processes – Flame contact or reshaping by heat decomposition of work
Patent
1994-07-28
1997-07-15
Timm, Catherine
Plastic and nonmetallic article shaping or treating: processes
Flame contact or reshaping by heat decomposition of work
264134, 264510, 264512, 264309, 264DIG72, 296 392, B29C 5102, B29C 5110
Patent
active
056480318
ABSTRACT:
A process for selectively forming an antislip surface on a product thermoformed from a plastic sheet is applied to truck bed liners, for example. The surface of the plastic sheet of HDPE or other thermoplastic material is cleaned and masked, to prepare a good molecular bonding surface on selected surface areas. A sprayable or liquid polymer selected to achieve desired characteristics of hardness and toughness without brittleness, such as a thermosetting elastomeric polymer, is formed into droplets, which are sprayed or otherwise applied onto the selected surface area. The droplets form a stippled pattern of primarily separate bumps across the selected surface area to be treated, occupying substantially less than 50% of the exposed area. After partial hardening of the bumps, the plastic sheet is thermoformed at thermoforming temperatures to produce the thermoformed product. Thermoforming tightly bonds the bumps or droplets to the thermoplastic sheet material, hardens the droplets forming macroscopic asperities, increases or enhances the three dimensional surface relief, and explodes some droplets with entrapped air to increase surface roughness.
REFERENCES:
patent: 73919 (1868-01-01), Newton
patent: 1411912 (1922-04-01), Fisher
patent: 1657687 (1928-01-01), Schuler
patent: 2120406 (1938-06-01), Hansen
patent: 2576290 (1951-11-01), Fisher, Jr.
patent: 2793136 (1957-05-01), Root
patent: 3124807 (1964-03-01), Frenkel et al.
patent: 3148103 (1964-09-01), Gallagher
patent: 3450563 (1969-06-01), Krueger
patent: 3573155 (1971-03-01), Mitchell
patent: 3598677 (1971-08-01), Bergmeister et al.
patent: 3629051 (1971-12-01), Mitchell
patent: 3629380 (1971-12-01), Edwards
patent: 3878147 (1975-04-01), Craven
patent: 4109041 (1978-08-01), Tellman
patent: 4196259 (1980-04-01), Augustin et al.
patent: 4329312 (1982-05-01), Ganz
patent: 4420513 (1983-12-01), Coke et al.
patent: 4488918 (1984-12-01), Jofs
patent: 4592583 (1986-06-01), Dresen et al.
patent: 4614686 (1986-09-01), Coke et al.
patent: 4692370 (1987-09-01), Reckziegel et al.
patent: 4693507 (1987-09-01), Dresen et al.
patent: 4721641 (1988-01-01), Bailey
patent: 4745139 (1988-05-01), Haasl et al.
patent: 4760103 (1988-07-01), Kraft et al.
patent: 5053253 (1991-10-01), Haenggi et al.
patent: 5094902 (1992-03-01), Haenggi et al.
patent: 5110657 (1992-05-01), Ainslie
patent: 5194194 (1993-03-01), Kato et al.
patent: 5263761 (1993-11-01), Hathaway et al.
Printing inks, Materials Handbook, 12th ed., Brady et al. ed. pp. 406-407 1986.
Hans Deamer, Printing, Modern Plastics Encyclopedia 1988, pp. 356-357 Oct. 1987.
Cullivan Edward E.
Sturtevant Thomas M.
Custom Plastics Molding, Inc.
Fasse W. F.
Fasse W. G.
Timm Catherine
LandOfFree
Method of forming antislip surfaces on thermoformed products does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of forming antislip surfaces on thermoformed products, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming antislip surfaces on thermoformed products will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1490583