US20030143369A1 - Method of making skid-resistant bed liner - Google Patents
Method of making skid-resistant bed liner Download PDFInfo
- Publication number
- US20030143369A1 US20030143369A1 US10/368,252 US36825203A US2003143369A1 US 20030143369 A1 US20030143369 A1 US 20030143369A1 US 36825203 A US36825203 A US 36825203A US 2003143369 A1 US2003143369 A1 US 2003143369A1
- Authority
- US
- United States
- Prior art keywords
- sheet
- blank
- brush
- bed liner
- skid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C2059/027—Grinding; Polishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2791/00—Shaping characteristics in general
- B29C2791/001—Shaping in several steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/02—Combined thermoforming and manufacture of the preform
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
Definitions
- a method and apparatus for forming a skid-resistant surface on a thermoformed object and more particularly a method and apparatus having a device for abrading the surface of a blank before thermoforming.
- truck bed liners are thermoformed from blanks of extruded plastic material.
- the plastic is extruded into a continuous sheet which is wider than necessary for the mold of a thermoforming machine.
- a pattern is formed on one side of the sheet by embossing the top surface of the sheet with a roller having a pattern as the sheet exits the extruder.
- the pattern is typically formed to have a texture and appearance of leather.
- a method and apparatus for producing a skid-resistant surface on items produced by thermoforming includes extruding a thermoformed sheet of material, abrading a top surface of the sheet to form a plurality of indentations, forming a blank of said thermoplastic material from said sheet, and thermoforming said blank to form a molded object and to open said indentations to form a skid resistant surface on said object.
- the abrading step may be accomplished by passing the sheet under a wire brush rotating in the same direction as the direction of travel of the sheet and at a slightly greater speed.
- the apparatus includes a conventional thermoplastic extruding machine and a delivery mechanism to deliver the sheet from the extruder to an abrading station.
- the abrading station includes rollers for delivering the sheet to pass beneath a rotatable wire brush.
- the wire brush is mounted to extend transversely to the direction of travel of the sheet and is rotated in the same direction at a slightly greater speed by a motor.
- the apparatus also includes a conventional cutter to trim the sheet into rectangular blanks and a conventional thermoforming machine.
- a hood extends over the roller to collect material ground from the surface by the brush. Additionally, a receptacle may be mounted beneath the brush to collect the ground off material.
- FIG. 1 is a perspective view of a portion of an apparatus including an abrasion station in accordance with the invention
- FIG. 2 is a top view of a sheet of material after it has been formed according to the method of the invention
- FIG. 3 is a flow chart showing the steps of the method in accordance with the invention.
- FIG. 4 is a schematic chart showing the apparatus in accordance with the invention.
- FIGS. 1 and 4 is an apparatus 10 for forming a skid-resistant surface 12 (FIG. 2) on a thermoformed object such as a truck bed liner.
- the apparatus 10 includes an extruder 14 , a delivery mechanism 16 , an abrading station 18 , a shear 20 and thermoforming machine 22 (FIG. 4).
- the extruder 14 is of any conventional type which produces a continuous flat sheet of thermoformable plastic material.
- the extruder 14 includes a hopper 24 for feeding raw or ground up scrap thermoplastic into a drum (not shown) where the material is heated until it melts. The material is then extruded through an aperture 25 into a sheet 23 which is fed to an embossing roller 26 .
- the embossing roller 26 forms a pattern on the top surface 28 of the sheet while the sheet is still hot or at approximately 150° or more. In the case of truck bed liners, the pattern is typically formed to produce a surface which has a leather-like grain with a generally smooth top surface but with an irregular grid of lines extending a slight distance into the surface to form the grain.
- the delivery mechanism such as a conveyor or a series of rollers 30 disposed in a downwardly angled path extends from the embossing rollers downwardly to the abrading station 18 .
- the brush forms a continuous pattern of small indentations in the top surface of the sheet 23
- the rollers 30 are supported by a frame 31 .
- the sheet 23 cools as it travels across the rollers.
- a pair of edge slitters 32 may be positioned at opposite sides of the frame 31 . The slitters 32 are movable to trim the sheet to a desired width as it passes through.
- the abrading station includes a wire brush 34 which is disposed transversely to the direction of travel of the sheet. Rollers 36 are disposed beneath the brush to support the sheet 23 as it passes at a predetermined rate of speed, such as 4 to 5 feet per minute, beneath the brush 34 .
- the brush is a conventional cylindrical wire brush such as produced by Weiler Co. of Cresco, Pennsylvania.
- the brush 34 has an outer diameter of approximately 10 inches and an inner diameter of two inches.
- the wires of the brush extend fully across the width of the sheet.
- the wires are medium crimped and have a diameter of /014 inches.
- the brush is rotated by a motor 38 so as to have the outer surface of the brush 34 rotate in the same direction as the direction of travel of the sheet 23 (i.e. the brush rotates counterclockwise along a sheet moving from left to right as shown in FIG. 1).
- the motor 38 turns the brush 34 at a speed such as 600 rpm which is slightly greater than the rate of travel of the sheet.
- a hood 40 extends over the wire brush 34 to prevent particles removed from the sheet by the brush from being cast into the air.
- a receptacle 42 for collecting the removed particles.
- the brush forms a continuous pattern of small indentations in the top surface of the sheet 23 .
- a conventional shear 20 is located downstream from the abrading station 18 .
- the shear 20 is used to trim the sheet 23 in blanks 44 having desired length for thermoforming the finished object.
- the blanks are then placed in the thermoforming machine 22 where they are reheated and drawn into a mold.
- the reheating and molding opens the indentations produced by the brush to form a rougher surface on the product which is skid resistant.
- the method according to the invention includes extruding a sheet of thermoplastic.
- the sheet is embossed with a textured leather-like surface as it is extruded at a temperature of approximately 150°.
- the sheet is then cooled to approximately 130° as it is delivered by the rollers 30 to the abrading station 18 .
- the pair of edge rippers 32 are used to size the width of the sheet as it passes on an incline downwardly to the abrading station.
- the sheet passes over a roller 36 and beneath a rotating wire brush 34 .
- the brush rotates in the same direction as the direction of travel as the sheet and at a slightly higher speed.
- the sheet travels at approximately 4-5 feet/minute and the brush rotates at about 600 rpm.
- the brush forms a dispersion of pin pricks or indentations about the size of the diameter of the wires of the brush in the top surface of the sheet 23 .
- the sheet 23 is then sheared to length to form blanks 44 for thermoforming.
- the blanks may be used immediately or stored on pallets at room temperature until used in the molding process.
- the blank 44 is thermoformed, it is reheated until soft at about a temperature of 350° and then vacuum formed on a mold.
- the indentations formed by the wire brushes open slightly providing a surface which is rough and produces greater friction than conventionally molded surfaces. The surfaces then act to provide a skid-resistant surface.
Abstract
A method and apparatus for forming a skid-resistant surface on a thermoformed object such as a bed liner. The method includes forming a blank of extruded plastic material, abrading the surface with a wire brush, reheating the blank and thermoforming the blank to open the abraded surface of the blank. The apparatus includes an extruder delivery mechanism delivering a blank of sheet material to a wire brush which is turned by an electric motor at a speed slightly greater and in the same direction as the travel of the blank under the roller.
Description
- This is a continuation of U.S. patent application Ser. No. 09/552,268, filed Apr. 19, 2000, which is a divisional of U. S. patent application Ser. No. 09/174,728, filed Oct. 19, 1998, and are hereby incorporated by reference.
- A method and apparatus for forming a skid-resistant surface on a thermoformed object and more particularly a method and apparatus having a device for abrading the surface of a blank before thermoforming.
- It is frequently desirable to form a non-slip or skid-resistant surface on the surface of thermoformed objects such as truck bed liners. Typically, truck bed liners are thermoformed from blanks of extruded plastic material. The plastic is extruded into a continuous sheet which is wider than necessary for the mold of a thermoforming machine. Typically a pattern is formed on one side of the sheet by embossing the top surface of the sheet with a roller having a pattern as the sheet exits the extruder. The pattern is typically formed to have a texture and appearance of leather. Although the roller forms indentations in the surface of the sheet, the surface is sufficiently smooth that cargo and the like can slide on the surface of the truck bed liner when a vehicle turns, stops or accelerates.
- Accordingly, various methods have been employed by the manufacturers of liners to prevent movement of cargo. It is known as disclosed in U.S. Pat. No. 5,265,993 to Wayne to mount cross members or dividers above the floor of the liner to form a grid to hold cargo from movement.
- It is also known as disclosed in U.S. Pat. No. 5,549,428 to Yeatts to form devices which have ribs which lock in the longitudinal grooves of the floor. The top surface of the device is formed of material which produces greater friction than the surface of the liner and thereby reduces movement of the cargo.
- Finally, it is known to cover the top surface of the liner with a skid-resistant coating, such as disclosed in U.S. Pat. No. 4,693,507. However, the coating prevents the recycling of scrap liner material, thereby adding greatly to the cost of the liner.
- Accordingly it is an object of the invention to produce a slip or skid-resistant surface for a liner which is economically produced.
- A method and apparatus for producing a skid-resistant surface on items produced by thermoforming includes extruding a thermoformed sheet of material, abrading a top surface of the sheet to form a plurality of indentations, forming a blank of said thermoplastic material from said sheet, and thermoforming said blank to form a molded object and to open said indentations to form a skid resistant surface on said object. The abrading step may be accomplished by passing the sheet under a wire brush rotating in the same direction as the direction of travel of the sheet and at a slightly greater speed.
- The apparatus includes a conventional thermoplastic extruding machine and a delivery mechanism to deliver the sheet from the extruder to an abrading station. The abrading station includes rollers for delivering the sheet to pass beneath a rotatable wire brush. The wire brush is mounted to extend transversely to the direction of travel of the sheet and is rotated in the same direction at a slightly greater speed by a motor. The apparatus also includes a conventional cutter to trim the sheet into rectangular blanks and a conventional thermoforming machine. A hood extends over the roller to collect material ground from the surface by the brush. Additionally, a receptacle may be mounted beneath the brush to collect the ground off material.
- Other objects and many of the attendant advantages of this invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings which illustrate a preferred embodiment and wherein:
- FIG. 1 is a perspective view of a portion of an apparatus including an abrasion station in accordance with the invention;
- FIG. 2 is a top view of a sheet of material after it has been formed according to the method of the invention;
- FIG. 3 is a flow chart showing the steps of the method in accordance with the invention; and
- FIG. 4 is a schematic chart showing the apparatus in accordance with the invention.
- As shown in FIGS. 1 and 4 is an
apparatus 10 for forming a skid-resistant surface 12 (FIG. 2) on a thermoformed object such as a truck bed liner. Theapparatus 10 includes anextruder 14, adelivery mechanism 16, anabrading station 18, ashear 20 and thermoforming machine 22 (FIG. 4). - The
extruder 14 is of any conventional type which produces a continuous flat sheet of thermoformable plastic material. Theextruder 14 includes ahopper 24 for feeding raw or ground up scrap thermoplastic into a drum (not shown) where the material is heated until it melts. The material is then extruded through an aperture 25 into asheet 23 which is fed to anembossing roller 26. Theembossing roller 26 forms a pattern on thetop surface 28 of the sheet while the sheet is still hot or at approximately 150° or more. In the case of truck bed liners, the pattern is typically formed to produce a surface which has a leather-like grain with a generally smooth top surface but with an irregular grid of lines extending a slight distance into the surface to form the grain. - The delivery mechanism such as a conveyor or a series of
rollers 30 disposed in a downwardly angled path extends from the embossing rollers downwardly to theabrading station 18. The brush forms a continuous pattern of small indentations in the top surface of thesheet 23 Therollers 30 are supported by aframe 31. Thesheet 23 cools as it travels across the rollers. A pair ofedge slitters 32 may be positioned at opposite sides of theframe 31. Theslitters 32 are movable to trim the sheet to a desired width as it passes through. - As shown in FIG. 1, the abrading station includes a
wire brush 34 which is disposed transversely to the direction of travel of the sheet.Rollers 36 are disposed beneath the brush to support thesheet 23 as it passes at a predetermined rate of speed, such as 4 to 5 feet per minute, beneath thebrush 34. The brush is a conventional cylindrical wire brush such as produced by Weiler Co. of Cresco, Pennsylvania. Thebrush 34 has an outer diameter of approximately 10 inches and an inner diameter of two inches. The wires of the brush extend fully across the width of the sheet. The wires are medium crimped and have a diameter of /014 inches. The brush is rotated by amotor 38 so as to have the outer surface of thebrush 34 rotate in the same direction as the direction of travel of the sheet 23 (i.e. the brush rotates counterclockwise along a sheet moving from left to right as shown in FIG. 1). Themotor 38 turns thebrush 34 at a speed such as 600 rpm which is slightly greater than the rate of travel of the sheet. Ahood 40 extends over thewire brush 34 to prevent particles removed from the sheet by the brush from being cast into the air. Areceptacle 42 for collecting the removed particles. The brush forms a continuous pattern of small indentations in the top surface of thesheet 23. - As shown in FIG. 1 a
conventional shear 20 is located downstream from theabrading station 18. Theshear 20 is used to trim thesheet 23 inblanks 44 having desired length for thermoforming the finished object. The blanks are then placed in thethermoforming machine 22 where they are reheated and drawn into a mold. The reheating and molding opens the indentations produced by the brush to form a rougher surface on the product which is skid resistant. - The method according to the invention includes extruding a sheet of thermoplastic. In the preferred embodiment, the sheet is embossed with a textured leather-like surface as it is extruded at a temperature of approximately 150°.
- The sheet is then cooled to approximately 130° as it is delivered by the
rollers 30 to the abradingstation 18. In the preferred embodiment the pair ofedge rippers 32 are used to size the width of the sheet as it passes on an incline downwardly to the abrading station. - At the abrading
station 18 the sheet passes over aroller 36 and beneath arotating wire brush 34. The brush rotates in the same direction as the direction of travel as the sheet and at a slightly higher speed. The sheet travels at approximately 4-5 feet/minute and the brush rotates at about 600 rpm. The brush forms a dispersion of pin pricks or indentations about the size of the diameter of the wires of the brush in the top surface of thesheet 23. - The
sheet 23 is then sheared to length to formblanks 44 for thermoforming. The blanks may be used immediately or stored on pallets at room temperature until used in the molding process. When the blank 44 is thermoformed, it is reheated until soft at about a temperature of 350° and then vacuum formed on a mold. After molding and cooling, the indentations formed by the wire brushes open slightly providing a surface which is rough and produces greater friction than conventionally molded surfaces. The surfaces then act to provide a skid-resistant surface. - Obviously, many other modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than is specifically described by those of ordinary skill in the art without departing from the spirit and scope of the invention, as hereinafter defined by the appended claims.
Claims (4)
1. A truck bed liner formed from a blank of thermoplastic material, the truck bed liner comprising:
a body produced by thermomolding, said body having a skid resistant surface, said surface having a plurality of indentations formed in the blank of thermoplastic material before the blank is thermomolded, said indentation opening during the thermomolding to produce the skid resistant surface.
2. The truck bed liner of claim 1 , wherein the indentations in the blank are formed after the blank has been extruded into a sheet.
3. The truck bed liner of claim 2 , wherein the indentations are formed by abrading the surface of the sheet with a wire brush.
4. The bed liner of claim 3 , wherein the wire brush is rotated at a predetermined rate of speed greater than a speed of travel of said sheet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/368,252 US20030143369A1 (en) | 1998-10-19 | 2003-02-19 | Method of making skid-resistant bed liner |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/174,728 US6095787A (en) | 1998-10-19 | 1998-10-19 | Method of making a skid-resistant bed liner |
US09/552,268 US6521154B1 (en) | 1998-10-19 | 2000-04-19 | Method of making skid-resistant bed liner |
US10/368,252 US20030143369A1 (en) | 1998-10-19 | 2003-02-19 | Method of making skid-resistant bed liner |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US09/552,268 Continuation US6521154B1 (en) | 1998-10-19 | 2000-04-19 | Method of making skid-resistant bed liner |
Publications (1)
Publication Number | Publication Date |
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US20030143369A1 true US20030143369A1 (en) | 2003-07-31 |
Family
ID=22637273
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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US09/174,728 Expired - Fee Related US6095787A (en) | 1998-10-19 | 1998-10-19 | Method of making a skid-resistant bed liner |
US09/552,268 Expired - Fee Related US6521154B1 (en) | 1998-10-19 | 2000-04-19 | Method of making skid-resistant bed liner |
US10/368,252 Abandoned US20030143369A1 (en) | 1998-10-19 | 2003-02-19 | Method of making skid-resistant bed liner |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
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US09/174,728 Expired - Fee Related US6095787A (en) | 1998-10-19 | 1998-10-19 | Method of making a skid-resistant bed liner |
US09/552,268 Expired - Fee Related US6521154B1 (en) | 1998-10-19 | 2000-04-19 | Method of making skid-resistant bed liner |
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US (3) | US6095787A (en) |
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US7342496B2 (en) | 2000-01-24 | 2008-03-11 | Nextreme Llc | RF-enabled pallet |
US8077040B2 (en) | 2000-01-24 | 2011-12-13 | Nextreme, Llc | RF-enabled pallet |
US6718888B2 (en) * | 2000-04-11 | 2004-04-13 | Nextreme, Llc | Thermoformed platform |
US7874256B2 (en) * | 2000-04-11 | 2011-01-25 | Nextreme, Llc | Fire resistant plastic pallet with low radio frequency resistivity |
US8347794B2 (en) | 2000-04-11 | 2013-01-08 | Nextreme, Llc | Fire resistant pallet |
US20040000746A1 (en) * | 2002-06-28 | 2004-01-01 | Montagna John C. | Method of manufacturing laminated bed and bed liner |
US6848733B2 (en) * | 2002-11-08 | 2005-02-01 | Durakon Industries, Inc. | Co-formed bed liner having enhanced frictional characteristics |
US20040188006A1 (en) * | 2003-03-28 | 2004-09-30 | Montagna John C. | Method of manufacturing printed and laminated bed and bed liner |
WO2004097677A1 (en) * | 2003-04-28 | 2004-11-11 | International Business Machines Corporation | Automatic data consolidation |
US7116183B2 (en) * | 2004-02-05 | 2006-10-03 | Qualcomm Incorporated | Temperature compensated voltage controlled oscillator |
FR2870775B1 (en) * | 2004-05-28 | 2006-09-01 | Gaillon Soc Par Actions Simpli | PROCESS FOR PRODUCING A PLATE FOR THERMOFORMING AND PLATE OBTAINED THEREBY |
US10618210B2 (en) * | 2018-05-30 | 2020-04-14 | Corning Incorporated | High capacity print station, method of making a polymer composite part, and polymer composite part |
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US2849752A (en) * | 1956-12-17 | 1958-09-02 | Ibm | Machine for embossing thermoplastic workpiece |
US2951305A (en) * | 1956-11-28 | 1960-09-06 | Gen Tire & Rubber Co | Method of dulling a polyethylene terephthalate film surface |
US3399425A (en) * | 1966-08-23 | 1968-09-03 | Jerome H. Lemelson | Apparatus for surface forming materials |
US3825141A (en) * | 1971-07-13 | 1974-07-23 | Dart Ind Inc | Covered glass bottle or the like |
US4151320A (en) * | 1973-07-06 | 1979-04-24 | Hiromitsu Naka | Flexible non-skid strip with upwardly projecting portion for stair edge |
US4486371A (en) * | 1982-09-09 | 1984-12-04 | Caliri John S | Production of a decorative wood panel with simulated wood inlay |
US5046434A (en) * | 1990-05-02 | 1991-09-10 | Penda Corporation | Plastic reinforced thermoformed pallet |
US5090287A (en) * | 1991-01-22 | 1992-02-25 | Chezem Jim A | Circular tool assembly |
US5648031A (en) * | 1994-07-28 | 1997-07-15 | Custom Plastics Molding, Inc. | Method of forming antislip surfaces on thermoformed products |
US5720999A (en) * | 1995-05-19 | 1998-02-24 | Sirap-Gema S.P.A. | Tray of plastics material for food substances which tend to release liquids |
US6086354A (en) * | 1997-09-30 | 2000-07-11 | Alltrista Corporation | Track-supported rotatable sheet support structure for twin-sheet thermoformer |
-
1998
- 1998-10-19 US US09/174,728 patent/US6095787A/en not_active Expired - Fee Related
-
2000
- 2000-04-19 US US09/552,268 patent/US6521154B1/en not_active Expired - Fee Related
-
2003
- 2003-02-19 US US10/368,252 patent/US20030143369A1/en not_active Abandoned
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US1438231A (en) * | 1922-03-15 | 1922-12-12 | Firestone Tire & Rubber Co | Method and apparatus for constructing tires |
US2191106A (en) * | 1937-02-10 | 1940-02-20 | George W Denison | Method and apparatus for making bricks |
US2951305A (en) * | 1956-11-28 | 1960-09-06 | Gen Tire & Rubber Co | Method of dulling a polyethylene terephthalate film surface |
US2849752A (en) * | 1956-12-17 | 1958-09-02 | Ibm | Machine for embossing thermoplastic workpiece |
US3399425A (en) * | 1966-08-23 | 1968-09-03 | Jerome H. Lemelson | Apparatus for surface forming materials |
US3825141A (en) * | 1971-07-13 | 1974-07-23 | Dart Ind Inc | Covered glass bottle or the like |
US4151320A (en) * | 1973-07-06 | 1979-04-24 | Hiromitsu Naka | Flexible non-skid strip with upwardly projecting portion for stair edge |
US4486371A (en) * | 1982-09-09 | 1984-12-04 | Caliri John S | Production of a decorative wood panel with simulated wood inlay |
US5046434A (en) * | 1990-05-02 | 1991-09-10 | Penda Corporation | Plastic reinforced thermoformed pallet |
US5090287A (en) * | 1991-01-22 | 1992-02-25 | Chezem Jim A | Circular tool assembly |
US5648031A (en) * | 1994-07-28 | 1997-07-15 | Custom Plastics Molding, Inc. | Method of forming antislip surfaces on thermoformed products |
US5720999A (en) * | 1995-05-19 | 1998-02-24 | Sirap-Gema S.P.A. | Tray of plastics material for food substances which tend to release liquids |
US6086354A (en) * | 1997-09-30 | 2000-07-11 | Alltrista Corporation | Track-supported rotatable sheet support structure for twin-sheet thermoformer |
Also Published As
Publication number | Publication date |
---|---|
US6521154B1 (en) | 2003-02-18 |
US6095787A (en) | 2000-08-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |