Changzhou Zhenghang Decorative Materials Co.,Ltd.

Zhenghang is leading manufacturer forHigh Pressure Laminate. Zhenghang provide customers with integrated solutions for interior design. We offer a complete series of surface deco products, including Plain HPL, Postforming HPL, Metallic HPL, Door Skin HPL, Colorcore HPL, Compact Laminate Board, Postforming Compact Grade, Chemical Resistant Laminate and Exterior Compact. Please tell us what you need for satisfy Individual needs and Improve service quality.

 

Zhenghang provide customers with integrated solutions for interior design. Our professional R&D team has been designing a lot of especial color and surface finishing. If normal design not you need, let me know.

Size

1220mm×1830mm (4’×6’)

1220mm×2440mm (4’×8’)

1220mm×3050mm (4’×10’)

1220mm×3660mm (4’×12’)

1525mm×1830mm (5’×6’)

1525mm×3050mm (5’×10’)

1525mm×3660mm (5’×12’)

1830mm×1830mm (6’×6’)

1830mm×3660mm (6’×12’)

1300mm×2800mm (4.3’×9’)

1300mm×3050mm (4.3’×10’) 

Color

Solid/plain color, fantastic color, wood grain color, metal, wooden veneer or customized color

If you need special color, please contact us.

Surface Finishing

Glossy, Matt, Texture, Horizontal, Embossed and some other especial surfaces

 

The Colorcore HPL test report of design as NEMA LD3-2005

Zhenghang provide customers with integrated solutions for interior design. Our professional R&D team has been designing a lot of especial color and surface finishing. If normal design not you need, let me know.

Size

1220mm×1830mm (4’×6’)

1220mm×2440mm (4’×8’)

1220mm×3050mm (4’×10’)

1220mm×3660mm (4’×12’)

1525mm×1830mm (5’×6’)

1525mm×3050mm (5’×10’)

1525mm×3660mm (5’×12’)

1830mm×1830mm (6’×6’)

1830mm×3660mm (6’×12’)

1300mm×2800mm (4.3’×9’)

1300mm×3050mm (4.3’×10’) 

Color

Solid/plain color, fantastic color, wood grain color, metal, wooden veneer or customized color

If you need special color, please contact us.

Surface Finishing

Glossy, Matt, Texture, Horizontal, Embossed and some other especial surfaces

Limitations

Colorcore HPL is designed for interior use only. Do not adhere directly to plywood, plaster, drywall (gypsum board) or concrete. Do not use in areas exposed to temperatures exceeding 275°F (135°C), or for exterior applications.

 

Storage

Colorcore sheets should be stored horizontally, with the top sheet turned face down and a caul board placed on top to protect the material from possible damage and reduce the chance of warpage of the top sheets. Colorcore sheets should be protected from moisture and should never be stored in contact with the floor or outside wall. Optimum conditions for storage are approximately 75°F (24°C), and 45% to 55% relative humidity.

 

Preconditioning

Prior to fabrication, allow Colorcore sheets and the substrates to acclimate for at least 48 hours at the same ambient conditions. Optimum conditions are approximately 75°F (24°C) and relative humidity of 45% to 55%. Provisions should be made for the circulation of air around the components.

 

Substrates

Colorcore sheet should be bonded to an appropriate substrate, such as Medium Density Fiberboard (MDF) or a #45 density particleboard (CS 236-66: Type 1, Grade B, Class 2). Plywoods are not acceptable or warranted substrates for Colorcore sheet. All substrates should be sanded smooth, clean, free of oil or grease and uniform in thickness.

 

Adhesives

Colorcore sheet does not have dark edges to mask the adhesive line. For best results, use semi-rigid (PVAc) or non pigmented contact adhesives. Resorcinols, pigmented contacts and dark-colored urea adhesives tend to leave a noticeable adhesive line and should be avoided. Follow the adhesive manufacturer’s recommendations. Certain combinations of finish, substrates and adhesives can cause telegraphing.

 

Assembly

Material, equipment and workmanship should conform to Zhenghang Company standard practices, conditions, procedures and recommendations as specified and outlined in the Colorcore HPL Fabrication Guide, which is available on the Zhenghang Company website. Panel assemblies should be laminated with a suitable backing sheet to minimize warpage. Always align sanding marks in the same direction.

Colorcore sheets can be sawed, drilled, routed and fabricated using standard carbide-tipped cutting tools.

All inside corners of cutouts must be radiused as large as possible (1/8" (3.18 mm) minimum) to avoid stress cracking. The edges and corners should be routed, sanded or filed smooth and free of chips or nicks.

Handling

Always carry Colorcore sheets vertically. Handle full-size sheets carefully to avoid breakage or injury. It is recommended that two people carry full-size sheets.

Be careful when moving Colorcore sheet so as not to strike it against anything which would damage the decorative surface or the edges.

Always lift a Colorcore sheets assembly from one point to another. Never slide the panel on its decorative surface. Leave the protective film in place during fabrication.

 

Inside Corner Fabrication

Radius inside corners as large as possible(1/8" (3.2mm) minimum). Inside corners required for sinks, grills, electrical outlets, etc., must contain the stresses generated by the normal movement of the Colorcore sheet. Radiusing the cutouts greatly reduces these stresses. The radiused corner created by a 1/4" (6.4mm) diameter router bit is sufficient.

 

Adhesive Bond

The strength of the bond between the Colorcore sheet and the substrate determines the amount of stress that may be transmitted to the substrate. Contact adhesives are the weakest of all recommended adhesives because of their elastomeric nature. PVAc (white or yellow glue), urea and resorcinol adhesives distribute much more of the stress to the substrate, making these assemblies more crack resistant.

When using contact adhesive, stress crack performance will be greatly improved if PVAc (white or yellow glue) is used at all inside corners (see below). Note: Waterproof PVAc adhesives (yellow glue) are available for assemblies which require water resistance.

a.    Mask the Colorcore sheet and substrate area around the cutout prior to applying the contact adhesive.

b.    Apply a PVAc adhesive to the masked area just before the Colorcore sheet and substrate are joined and nip rolled to fuse the contact adhesive.

c.    Clamp the area bonded with PVAc until the adhesive has set (usually one hour).

 

Strategic Seam Placement

Plan the placement of seams to minimize inside corners.

Arranging seams to avoid unnecessary cutouts is also an effective means of controlling stress cracking.

 

Cutting

Many of the same tools used to fabricate items surfaced with Zhenghang brand laminate are also used with Colorcore sheet.

When using a table saw to cut Colorcore sheets to rough sizes we recommend using a triple chip grind (10" carbide tip blade with 60 teeth).

When cutting double sided panels on table or panel saw, a 5° negative hook angle blade is recommended. This will produce a smooth cut and minimize chipping.

The blade should be raised approximately 1/2" (12.7mm) above the Colorcore sheet surface. By further raising the blade, surface chipping is reduced. By lowering the blade, bottom side chipping is reduced.

The Colorcore sheet, face side up, should rest flat on the saw table as it passes the saw blade. The saw fence should be in proper alignment with the saw blade. A board may be clamped to the saw fence to prevent flutter while cutting.

When using a radial arm saw, materials should be supported with a piece of scrap lumber. A 5° negative hook angle blade is also recommended.

Some electric shears can be used, with care, to cut Colorcore sheets. Never use laminate slitters to cut Colorcore sheets.

 

Routing

A router, along with a selection of carbide cutters, will be the will be an indispensable tool when working with Colorcore sheet. There are a variety of routers on the market which differ in style, size, price and optional attachments.

 

Balancing

Many applications, such as large, thin sectioned panels, cabinet doors, etc., will require a balancing sheet. Optimum balancing is obtained by bonding the grade of Colorcore sheet on both sides of the assembly with the same adhesive treatment. Always align the sanding marks in the same direction.

For less critical applications, the selection of an appropriate backer depends upon the specification application. The final decision concerning the selection of a proper backer must be made by the fabricator, based on the particular application.

 

Forming

You can bend 2-1/2" (6.35 cm) wide strips of Colorcore sheet to a minimum radius of 6" (9.14 cm). For wider sheets the minimum radius will increase. Heating Colorcore sheets to 325ºF (163ºC) uniformly over the entire bend area will facilitate bending to a minimum radius of 3/4" (19mm). Colorcore sheet is produced as a postforming material and can be postformed to a 3/4" (19mm).

Tempilaq® (orange color) can be used to determine the temperature. The heat source can be a heat gun for small pieces or an infrared heater of sufficient area and watt density for larger sections.

Caution: Wear protective gloves.

 

Installation

Install the assembly clearance at sinks, electrical boxes, the panel edges, etc. to allow for normal dimensional movement.

Do not install a Colorcore sheet assembly by forcing or binding the assembly in a manner which will not allow normal dimensional movement. Panels should be installed with clearance around electrical boxes, piping, ductwork, etc. Sinks or louvers should fit easily into openings without binding. Panels should be installed in a flat plane by shimming or furring to avoid unnecessary bending.

 

Causes of Stress Cracking

Stress cracking of Colorcore sheet is caused by the concentration of stresses greater than the Colorcore sheet can withstand.

These stresses can be caused by external forces such as loading or impacts, but are generally created by the normal dimensional movements of the Colorcore sheet assembly as it reacts to the surrounding environment. As with all wood-based products, Colorcore sheet surfacing material reacts to the ambient conditions. Colorcore sheets and substrates gain moisture and expand under moist conditions (high relative humidity) and lose moisture and shrink under dry conditions (low relative humidity). When drying occurs, stress cracking can result. Also, when improperly fabricated Colorcore sheets assemblies are exposed to low humidity conditions, stress cracking may result.

Colorcore sheet moves about twice as much across the grain (sheet width) as it moves along the grain (sheet length/sanding direction). Whenever possible, minimize the dimension of the cross-grain direction.

 

Controlling Stress Cracking

Controlling stress cracking can be easily accomplished by using fabricating techniques which recognize and moderate the dimensional movement and associated stresses in a Colorcore sheet assembly.